From e0989fde894853435a470df4edb9d5076e19f3f4 Mon Sep 17 00:00:00 2001 From: Tom Wilkie Date: Thu, 15 Sep 2016 23:15:37 +0100 Subject: [PATCH 1/2] Remove grpc vendoring. --- vendor/golang.org/x/net/http2/Dockerfile | 51 - vendor/golang.org/x/net/http2/Makefile | 3 - vendor/golang.org/x/net/http2/README | 20 - .../x/net/http2/client_conn_pool.go | 256 -- .../x/net/http2/configure_transport.go | 80 - vendor/golang.org/x/net/http2/errors.go | 130 - vendor/golang.org/x/net/http2/fixed_buffer.go | 60 - vendor/golang.org/x/net/http2/flow.go | 50 - vendor/golang.org/x/net/http2/frame.go | 1539 ----------- vendor/golang.org/x/net/http2/go16.go | 43 - vendor/golang.org/x/net/http2/go17.go | 94 - vendor/golang.org/x/net/http2/gotrack.go | 170 -- vendor/golang.org/x/net/http2/headermap.go | 78 - vendor/golang.org/x/net/http2/hpack/encode.go | 251 -- vendor/golang.org/x/net/http2/hpack/hpack.go | 542 ---- .../golang.org/x/net/http2/hpack/huffman.go | 212 -- vendor/golang.org/x/net/http2/hpack/tables.go | 352 --- vendor/golang.org/x/net/http2/http2.go | 362 --- vendor/golang.org/x/net/http2/not_go16.go | 46 - vendor/golang.org/x/net/http2/not_go17.go | 51 - vendor/golang.org/x/net/http2/pipe.go | 153 -- vendor/golang.org/x/net/http2/server.go | 2292 ----------------- vendor/golang.org/x/net/http2/transport.go | 1994 -------------- vendor/golang.org/x/net/http2/write.go | 264 -- vendor/golang.org/x/net/http2/writesched.go | 283 -- .../golang.org/x/net/lex/httplex/httplex.go | 312 --- vendor/golang.org/x/net/trace/events.go | 524 ---- vendor/golang.org/x/net/trace/histogram.go | 356 --- vendor/golang.org/x/net/trace/trace.go | 1063 -------- vendor/google.golang.org/grpc/CONTRIBUTING.md | 46 - vendor/google.golang.org/grpc/LICENSE | 28 - vendor/google.golang.org/grpc/Makefile | 52 - vendor/google.golang.org/grpc/PATENTS | 22 - vendor/google.golang.org/grpc/README.md | 32 - vendor/google.golang.org/grpc/backoff.go | 80 - vendor/google.golang.org/grpc/balancer.go | 385 --- vendor/google.golang.org/grpc/call.go | 226 -- vendor/google.golang.org/grpc/clientconn.go | 857 ------ vendor/google.golang.org/grpc/codegen.sh | 17 - .../grpc/codes/code_string.go | 16 - vendor/google.golang.org/grpc/codes/codes.go | 159 -- vendor/google.golang.org/grpc/coverage.sh | 47 - .../grpc/credentials/credentials.go | 220 -- .../grpc/credentials/credentials_util_go17.go | 76 - .../credentials/credentials_util_pre_go17.go | 74 - vendor/google.golang.org/grpc/doc.go | 6 - .../google.golang.org/grpc/grpclog/logger.go | 93 - vendor/google.golang.org/grpc/interceptor.go | 74 - .../grpc/internal/internal.go | 49 - .../grpc/metadata/metadata.go | 140 - .../google.golang.org/grpc/naming/naming.go | 74 - vendor/google.golang.org/grpc/peer/peer.go | 65 - vendor/google.golang.org/grpc/rpc_util.go | 457 ---- vendor/google.golang.org/grpc/server.go | 897 ------- vendor/google.golang.org/grpc/stream.go | 493 ---- vendor/google.golang.org/grpc/trace.go | 119 - .../grpc/transport/control.go | 215 -- .../google.golang.org/grpc/transport/go16.go | 46 - .../google.golang.org/grpc/transport/go17.go | 46 - .../grpc/transport/handler_server.go | 397 --- .../grpc/transport/http2_client.go | 1056 -------- .../grpc/transport/http2_server.go | 774 ------ .../grpc/transport/http_util.go | 510 ---- .../grpc/transport/pre_go16.go | 51 - .../grpc/transport/transport.go | 578 ----- vendor/vendor.json | 78 - 66 files changed, 20186 deletions(-) delete mode 100644 vendor/golang.org/x/net/http2/Dockerfile delete mode 100644 vendor/golang.org/x/net/http2/Makefile delete mode 100644 vendor/golang.org/x/net/http2/README delete mode 100644 vendor/golang.org/x/net/http2/client_conn_pool.go delete mode 100644 vendor/golang.org/x/net/http2/configure_transport.go delete mode 100644 vendor/golang.org/x/net/http2/errors.go delete mode 100644 vendor/golang.org/x/net/http2/fixed_buffer.go delete mode 100644 vendor/golang.org/x/net/http2/flow.go delete mode 100644 vendor/golang.org/x/net/http2/frame.go delete mode 100644 vendor/golang.org/x/net/http2/go16.go delete mode 100644 vendor/golang.org/x/net/http2/go17.go delete mode 100644 vendor/golang.org/x/net/http2/gotrack.go delete mode 100644 vendor/golang.org/x/net/http2/headermap.go delete mode 100644 vendor/golang.org/x/net/http2/hpack/encode.go delete mode 100644 vendor/golang.org/x/net/http2/hpack/hpack.go delete mode 100644 vendor/golang.org/x/net/http2/hpack/huffman.go delete mode 100644 vendor/golang.org/x/net/http2/hpack/tables.go delete mode 100644 vendor/golang.org/x/net/http2/http2.go delete mode 100644 vendor/golang.org/x/net/http2/not_go16.go delete mode 100644 vendor/golang.org/x/net/http2/not_go17.go delete mode 100644 vendor/golang.org/x/net/http2/pipe.go delete mode 100644 vendor/golang.org/x/net/http2/server.go delete mode 100644 vendor/golang.org/x/net/http2/transport.go delete mode 100644 vendor/golang.org/x/net/http2/write.go delete mode 100644 vendor/golang.org/x/net/http2/writesched.go delete mode 100644 vendor/golang.org/x/net/lex/httplex/httplex.go delete mode 100644 vendor/golang.org/x/net/trace/events.go delete mode 100644 vendor/golang.org/x/net/trace/histogram.go delete mode 100644 vendor/golang.org/x/net/trace/trace.go delete mode 100644 vendor/google.golang.org/grpc/CONTRIBUTING.md delete mode 100644 vendor/google.golang.org/grpc/LICENSE delete mode 100644 vendor/google.golang.org/grpc/Makefile delete mode 100644 vendor/google.golang.org/grpc/PATENTS delete mode 100644 vendor/google.golang.org/grpc/README.md delete mode 100644 vendor/google.golang.org/grpc/backoff.go delete mode 100644 vendor/google.golang.org/grpc/balancer.go delete mode 100644 vendor/google.golang.org/grpc/call.go delete mode 100644 vendor/google.golang.org/grpc/clientconn.go delete mode 100755 vendor/google.golang.org/grpc/codegen.sh delete mode 100644 vendor/google.golang.org/grpc/codes/code_string.go delete mode 100644 vendor/google.golang.org/grpc/codes/codes.go delete mode 100755 vendor/google.golang.org/grpc/coverage.sh delete mode 100644 vendor/google.golang.org/grpc/credentials/credentials.go delete mode 100644 vendor/google.golang.org/grpc/credentials/credentials_util_go17.go delete mode 100644 vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go delete mode 100644 vendor/google.golang.org/grpc/doc.go delete mode 100644 vendor/google.golang.org/grpc/grpclog/logger.go delete mode 100644 vendor/google.golang.org/grpc/interceptor.go delete mode 100644 vendor/google.golang.org/grpc/internal/internal.go delete mode 100644 vendor/google.golang.org/grpc/metadata/metadata.go delete mode 100644 vendor/google.golang.org/grpc/naming/naming.go delete mode 100644 vendor/google.golang.org/grpc/peer/peer.go delete mode 100644 vendor/google.golang.org/grpc/rpc_util.go delete mode 100644 vendor/google.golang.org/grpc/server.go delete mode 100644 vendor/google.golang.org/grpc/stream.go delete mode 100644 vendor/google.golang.org/grpc/trace.go delete mode 100644 vendor/google.golang.org/grpc/transport/control.go delete mode 100644 vendor/google.golang.org/grpc/transport/go16.go delete mode 100644 vendor/google.golang.org/grpc/transport/go17.go delete mode 100644 vendor/google.golang.org/grpc/transport/handler_server.go delete mode 100644 vendor/google.golang.org/grpc/transport/http2_client.go delete mode 100644 vendor/google.golang.org/grpc/transport/http2_server.go delete mode 100644 vendor/google.golang.org/grpc/transport/http_util.go delete mode 100644 vendor/google.golang.org/grpc/transport/pre_go16.go delete mode 100644 vendor/google.golang.org/grpc/transport/transport.go diff --git a/vendor/golang.org/x/net/http2/Dockerfile b/vendor/golang.org/x/net/http2/Dockerfile deleted file mode 100644 index 53fc525797..0000000000 --- a/vendor/golang.org/x/net/http2/Dockerfile +++ /dev/null @@ -1,51 +0,0 @@ -# -# This Dockerfile builds a recent curl with HTTP/2 client support, using -# a recent nghttp2 build. -# -# See the Makefile for how to tag it. If Docker and that image is found, the -# Go tests use this curl binary for integration tests. -# - -FROM ubuntu:trusty - -RUN apt-get update && \ - apt-get upgrade -y && \ - apt-get install -y git-core build-essential wget - -RUN apt-get install -y --no-install-recommends \ - autotools-dev libtool pkg-config zlib1g-dev \ - libcunit1-dev libssl-dev libxml2-dev libevent-dev \ - automake autoconf - -# The list of packages nghttp2 recommends for h2load: -RUN apt-get install -y --no-install-recommends make binutils \ - autoconf automake autotools-dev \ - libtool pkg-config zlib1g-dev libcunit1-dev libssl-dev libxml2-dev \ - libev-dev libevent-dev libjansson-dev libjemalloc-dev \ - cython python3.4-dev python-setuptools - -# Note: setting NGHTTP2_VER before the git clone, so an old git clone isn't cached: -ENV NGHTTP2_VER 895da9a -RUN cd /root && git clone https://github.com/tatsuhiro-t/nghttp2.git - -WORKDIR /root/nghttp2 -RUN git reset --hard $NGHTTP2_VER -RUN autoreconf -i -RUN automake -RUN autoconf -RUN ./configure -RUN make -RUN make install - -WORKDIR /root -RUN wget http://curl.haxx.se/download/curl-7.45.0.tar.gz -RUN tar -zxvf curl-7.45.0.tar.gz -WORKDIR /root/curl-7.45.0 -RUN ./configure --with-ssl --with-nghttp2=/usr/local -RUN make -RUN make install -RUN ldconfig - -CMD ["-h"] -ENTRYPOINT ["/usr/local/bin/curl"] - diff --git a/vendor/golang.org/x/net/http2/Makefile b/vendor/golang.org/x/net/http2/Makefile deleted file mode 100644 index 55fd826f77..0000000000 --- a/vendor/golang.org/x/net/http2/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -curlimage: - docker build -t gohttp2/curl . - diff --git a/vendor/golang.org/x/net/http2/README b/vendor/golang.org/x/net/http2/README deleted file mode 100644 index 360d5aa379..0000000000 --- a/vendor/golang.org/x/net/http2/README +++ /dev/null @@ -1,20 +0,0 @@ -This is a work-in-progress HTTP/2 implementation for Go. - -It will eventually live in the Go standard library and won't require -any changes to your code to use. It will just be automatic. - -Status: - -* The server support is pretty good. A few things are missing - but are being worked on. -* The client work has just started but shares a lot of code - is coming along much quicker. - -Docs are at https://godoc.org/golang.org/x/net/http2 - -Demo test server at https://http2.golang.org/ - -Help & bug reports welcome! - -Contributing: https://golang.org/doc/contribute.html -Bugs: https://golang.org/issue/new?title=x/net/http2:+ diff --git a/vendor/golang.org/x/net/http2/client_conn_pool.go b/vendor/golang.org/x/net/http2/client_conn_pool.go deleted file mode 100644 index b13941258a..0000000000 --- a/vendor/golang.org/x/net/http2/client_conn_pool.go +++ /dev/null @@ -1,256 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Transport code's client connection pooling. - -package http2 - -import ( - "crypto/tls" - "net/http" - "sync" -) - -// ClientConnPool manages a pool of HTTP/2 client connections. -type ClientConnPool interface { - GetClientConn(req *http.Request, addr string) (*ClientConn, error) - MarkDead(*ClientConn) -} - -// clientConnPoolIdleCloser is the interface implemented by ClientConnPool -// implementations which can close their idle connections. -type clientConnPoolIdleCloser interface { - ClientConnPool - closeIdleConnections() -} - -var ( - _ clientConnPoolIdleCloser = (*clientConnPool)(nil) - _ clientConnPoolIdleCloser = noDialClientConnPool{} -) - -// TODO: use singleflight for dialing and addConnCalls? -type clientConnPool struct { - t *Transport - - mu sync.Mutex // TODO: maybe switch to RWMutex - // TODO: add support for sharing conns based on cert names - // (e.g. share conn for googleapis.com and appspot.com) - conns map[string][]*ClientConn // key is host:port - dialing map[string]*dialCall // currently in-flight dials - keys map[*ClientConn][]string - addConnCalls map[string]*addConnCall // in-flight addConnIfNeede calls -} - -func (p *clientConnPool) GetClientConn(req *http.Request, addr string) (*ClientConn, error) { - return p.getClientConn(req, addr, dialOnMiss) -} - -const ( - dialOnMiss = true - noDialOnMiss = false -) - -func (p *clientConnPool) getClientConn(req *http.Request, addr string, dialOnMiss bool) (*ClientConn, error) { - if isConnectionCloseRequest(req) && dialOnMiss { - // It gets its own connection. - const singleUse = true - cc, err := p.t.dialClientConn(addr, singleUse) - if err != nil { - return nil, err - } - return cc, nil - } - p.mu.Lock() - for _, cc := range p.conns[addr] { - if cc.CanTakeNewRequest() { - p.mu.Unlock() - return cc, nil - } - } - if !dialOnMiss { - p.mu.Unlock() - return nil, ErrNoCachedConn - } - call := p.getStartDialLocked(addr) - p.mu.Unlock() - <-call.done - return call.res, call.err -} - -// dialCall is an in-flight Transport dial call to a host. -type dialCall struct { - p *clientConnPool - done chan struct{} // closed when done - res *ClientConn // valid after done is closed - err error // valid after done is closed -} - -// requires p.mu is held. -func (p *clientConnPool) getStartDialLocked(addr string) *dialCall { - if call, ok := p.dialing[addr]; ok { - // A dial is already in-flight. Don't start another. - return call - } - call := &dialCall{p: p, done: make(chan struct{})} - if p.dialing == nil { - p.dialing = make(map[string]*dialCall) - } - p.dialing[addr] = call - go call.dial(addr) - return call -} - -// run in its own goroutine. -func (c *dialCall) dial(addr string) { - const singleUse = false // shared conn - c.res, c.err = c.p.t.dialClientConn(addr, singleUse) - close(c.done) - - c.p.mu.Lock() - delete(c.p.dialing, addr) - if c.err == nil { - c.p.addConnLocked(addr, c.res) - } - c.p.mu.Unlock() -} - -// addConnIfNeeded makes a NewClientConn out of c if a connection for key doesn't -// already exist. It coalesces concurrent calls with the same key. -// This is used by the http1 Transport code when it creates a new connection. Because -// the http1 Transport doesn't de-dup TCP dials to outbound hosts (because it doesn't know -// the protocol), it can get into a situation where it has multiple TLS connections. -// This code decides which ones live or die. -// The return value used is whether c was used. -// c is never closed. -func (p *clientConnPool) addConnIfNeeded(key string, t *Transport, c *tls.Conn) (used bool, err error) { - p.mu.Lock() - for _, cc := range p.conns[key] { - if cc.CanTakeNewRequest() { - p.mu.Unlock() - return false, nil - } - } - call, dup := p.addConnCalls[key] - if !dup { - if p.addConnCalls == nil { - p.addConnCalls = make(map[string]*addConnCall) - } - call = &addConnCall{ - p: p, - done: make(chan struct{}), - } - p.addConnCalls[key] = call - go call.run(t, key, c) - } - p.mu.Unlock() - - <-call.done - if call.err != nil { - return false, call.err - } - return !dup, nil -} - -type addConnCall struct { - p *clientConnPool - done chan struct{} // closed when done - err error -} - -func (c *addConnCall) run(t *Transport, key string, tc *tls.Conn) { - cc, err := t.NewClientConn(tc) - - p := c.p - p.mu.Lock() - if err != nil { - c.err = err - } else { - p.addConnLocked(key, cc) - } - delete(p.addConnCalls, key) - p.mu.Unlock() - close(c.done) -} - -func (p *clientConnPool) addConn(key string, cc *ClientConn) { - p.mu.Lock() - p.addConnLocked(key, cc) - p.mu.Unlock() -} - -// p.mu must be held -func (p *clientConnPool) addConnLocked(key string, cc *ClientConn) { - for _, v := range p.conns[key] { - if v == cc { - return - } - } - if p.conns == nil { - p.conns = make(map[string][]*ClientConn) - } - if p.keys == nil { - p.keys = make(map[*ClientConn][]string) - } - p.conns[key] = append(p.conns[key], cc) - p.keys[cc] = append(p.keys[cc], key) -} - -func (p *clientConnPool) MarkDead(cc *ClientConn) { - p.mu.Lock() - defer p.mu.Unlock() - for _, key := range p.keys[cc] { - vv, ok := p.conns[key] - if !ok { - continue - } - newList := filterOutClientConn(vv, cc) - if len(newList) > 0 { - p.conns[key] = newList - } else { - delete(p.conns, key) - } - } - delete(p.keys, cc) -} - -func (p *clientConnPool) closeIdleConnections() { - p.mu.Lock() - defer p.mu.Unlock() - // TODO: don't close a cc if it was just added to the pool - // milliseconds ago and has never been used. There's currently - // a small race window with the HTTP/1 Transport's integration - // where it can add an idle conn just before using it, and - // somebody else can concurrently call CloseIdleConns and - // break some caller's RoundTrip. - for _, vv := range p.conns { - for _, cc := range vv { - cc.closeIfIdle() - } - } -} - -func filterOutClientConn(in []*ClientConn, exclude *ClientConn) []*ClientConn { - out := in[:0] - for _, v := range in { - if v != exclude { - out = append(out, v) - } - } - // If we filtered it out, zero out the last item to prevent - // the GC from seeing it. - if len(in) != len(out) { - in[len(in)-1] = nil - } - return out -} - -// noDialClientConnPool is an implementation of http2.ClientConnPool -// which never dials. We let the HTTP/1.1 client dial and use its TLS -// connection instead. -type noDialClientConnPool struct{ *clientConnPool } - -func (p noDialClientConnPool) GetClientConn(req *http.Request, addr string) (*ClientConn, error) { - return p.getClientConn(req, addr, noDialOnMiss) -} diff --git a/vendor/golang.org/x/net/http2/configure_transport.go b/vendor/golang.org/x/net/http2/configure_transport.go deleted file mode 100644 index 4f720f530b..0000000000 --- a/vendor/golang.org/x/net/http2/configure_transport.go +++ /dev/null @@ -1,80 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build go1.6 - -package http2 - -import ( - "crypto/tls" - "fmt" - "net/http" -) - -func configureTransport(t1 *http.Transport) (*Transport, error) { - connPool := new(clientConnPool) - t2 := &Transport{ - ConnPool: noDialClientConnPool{connPool}, - t1: t1, - } - connPool.t = t2 - if err := registerHTTPSProtocol(t1, noDialH2RoundTripper{t2}); err != nil { - return nil, err - } - if t1.TLSClientConfig == nil { - t1.TLSClientConfig = new(tls.Config) - } - if !strSliceContains(t1.TLSClientConfig.NextProtos, "h2") { - t1.TLSClientConfig.NextProtos = append([]string{"h2"}, t1.TLSClientConfig.NextProtos...) - } - if !strSliceContains(t1.TLSClientConfig.NextProtos, "http/1.1") { - t1.TLSClientConfig.NextProtos = append(t1.TLSClientConfig.NextProtos, "http/1.1") - } - upgradeFn := func(authority string, c *tls.Conn) http.RoundTripper { - addr := authorityAddr("https", authority) - if used, err := connPool.addConnIfNeeded(addr, t2, c); err != nil { - go c.Close() - return erringRoundTripper{err} - } else if !used { - // Turns out we don't need this c. - // For example, two goroutines made requests to the same host - // at the same time, both kicking off TCP dials. (since protocol - // was unknown) - go c.Close() - } - return t2 - } - if m := t1.TLSNextProto; len(m) == 0 { - t1.TLSNextProto = map[string]func(string, *tls.Conn) http.RoundTripper{ - "h2": upgradeFn, - } - } else { - m["h2"] = upgradeFn - } - return t2, nil -} - -// registerHTTPSProtocol calls Transport.RegisterProtocol but -// convering panics into errors. -func registerHTTPSProtocol(t *http.Transport, rt http.RoundTripper) (err error) { - defer func() { - if e := recover(); e != nil { - err = fmt.Errorf("%v", e) - } - }() - t.RegisterProtocol("https", rt) - return nil -} - -// noDialH2RoundTripper is a RoundTripper which only tries to complete the request -// if there's already has a cached connection to the host. -type noDialH2RoundTripper struct{ t *Transport } - -func (rt noDialH2RoundTripper) RoundTrip(req *http.Request) (*http.Response, error) { - res, err := rt.t.RoundTrip(req) - if err == ErrNoCachedConn { - return nil, http.ErrSkipAltProtocol - } - return res, err -} diff --git a/vendor/golang.org/x/net/http2/errors.go b/vendor/golang.org/x/net/http2/errors.go deleted file mode 100644 index 20fd7626a5..0000000000 --- a/vendor/golang.org/x/net/http2/errors.go +++ /dev/null @@ -1,130 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package http2 - -import ( - "errors" - "fmt" -) - -// An ErrCode is an unsigned 32-bit error code as defined in the HTTP/2 spec. -type ErrCode uint32 - -const ( - ErrCodeNo ErrCode = 0x0 - ErrCodeProtocol ErrCode = 0x1 - ErrCodeInternal ErrCode = 0x2 - ErrCodeFlowControl ErrCode = 0x3 - ErrCodeSettingsTimeout ErrCode = 0x4 - ErrCodeStreamClosed ErrCode = 0x5 - ErrCodeFrameSize ErrCode = 0x6 - ErrCodeRefusedStream ErrCode = 0x7 - ErrCodeCancel ErrCode = 0x8 - ErrCodeCompression ErrCode = 0x9 - ErrCodeConnect ErrCode = 0xa - ErrCodeEnhanceYourCalm ErrCode = 0xb - ErrCodeInadequateSecurity ErrCode = 0xc - ErrCodeHTTP11Required ErrCode = 0xd -) - -var errCodeName = map[ErrCode]string{ - ErrCodeNo: "NO_ERROR", - ErrCodeProtocol: "PROTOCOL_ERROR", - ErrCodeInternal: "INTERNAL_ERROR", - ErrCodeFlowControl: "FLOW_CONTROL_ERROR", - ErrCodeSettingsTimeout: "SETTINGS_TIMEOUT", - ErrCodeStreamClosed: "STREAM_CLOSED", - ErrCodeFrameSize: "FRAME_SIZE_ERROR", - ErrCodeRefusedStream: "REFUSED_STREAM", - ErrCodeCancel: "CANCEL", - ErrCodeCompression: "COMPRESSION_ERROR", - ErrCodeConnect: "CONNECT_ERROR", - ErrCodeEnhanceYourCalm: "ENHANCE_YOUR_CALM", - ErrCodeInadequateSecurity: "INADEQUATE_SECURITY", - ErrCodeHTTP11Required: "HTTP_1_1_REQUIRED", -} - -func (e ErrCode) String() string { - if s, ok := errCodeName[e]; ok { - return s - } - return fmt.Sprintf("unknown error code 0x%x", uint32(e)) -} - -// ConnectionError is an error that results in the termination of the -// entire connection. -type ConnectionError ErrCode - -func (e ConnectionError) Error() string { return fmt.Sprintf("connection error: %s", ErrCode(e)) } - -// StreamError is an error that only affects one stream within an -// HTTP/2 connection. -type StreamError struct { - StreamID uint32 - Code ErrCode - Cause error // optional additional detail -} - -func streamError(id uint32, code ErrCode) StreamError { - return StreamError{StreamID: id, Code: code} -} - -func (e StreamError) Error() string { - if e.Cause != nil { - return fmt.Sprintf("stream error: stream ID %d; %v; %v", e.StreamID, e.Code, e.Cause) - } - return fmt.Sprintf("stream error: stream ID %d; %v", e.StreamID, e.Code) -} - -// 6.9.1 The Flow Control Window -// "If a sender receives a WINDOW_UPDATE that causes a flow control -// window to exceed this maximum it MUST terminate either the stream -// or the connection, as appropriate. For streams, [...]; for the -// connection, a GOAWAY frame with a FLOW_CONTROL_ERROR code." -type goAwayFlowError struct{} - -func (goAwayFlowError) Error() string { return "connection exceeded flow control window size" } - -// connErrorReason wraps a ConnectionError with an informative error about why it occurs. - -// Errors of this type are only returned by the frame parser functions -// and converted into ConnectionError(ErrCodeProtocol). -type connError struct { - Code ErrCode - Reason string -} - -func (e connError) Error() string { - return fmt.Sprintf("http2: connection error: %v: %v", e.Code, e.Reason) -} - -type pseudoHeaderError string - -func (e pseudoHeaderError) Error() string { - return fmt.Sprintf("invalid pseudo-header %q", string(e)) -} - -type duplicatePseudoHeaderError string - -func (e duplicatePseudoHeaderError) Error() string { - return fmt.Sprintf("duplicate pseudo-header %q", string(e)) -} - -type headerFieldNameError string - -func (e headerFieldNameError) Error() string { - return fmt.Sprintf("invalid header field name %q", string(e)) -} - -type headerFieldValueError string - -func (e headerFieldValueError) Error() string { - return fmt.Sprintf("invalid header field value %q", string(e)) -} - -var ( - errMixPseudoHeaderTypes = errors.New("mix of request and response pseudo headers") - errPseudoAfterRegular = errors.New("pseudo header field after regular") -) diff --git a/vendor/golang.org/x/net/http2/fixed_buffer.go b/vendor/golang.org/x/net/http2/fixed_buffer.go deleted file mode 100644 index 47da0f0bf7..0000000000 --- a/vendor/golang.org/x/net/http2/fixed_buffer.go +++ /dev/null @@ -1,60 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package http2 - -import ( - "errors" -) - -// fixedBuffer is an io.ReadWriter backed by a fixed size buffer. -// It never allocates, but moves old data as new data is written. -type fixedBuffer struct { - buf []byte - r, w int -} - -var ( - errReadEmpty = errors.New("read from empty fixedBuffer") - errWriteFull = errors.New("write on full fixedBuffer") -) - -// Read copies bytes from the buffer into p. -// It is an error to read when no data is available. -func (b *fixedBuffer) Read(p []byte) (n int, err error) { - if b.r == b.w { - return 0, errReadEmpty - } - n = copy(p, b.buf[b.r:b.w]) - b.r += n - if b.r == b.w { - b.r = 0 - b.w = 0 - } - return n, nil -} - -// Len returns the number of bytes of the unread portion of the buffer. -func (b *fixedBuffer) Len() int { - return b.w - b.r -} - -// Write copies bytes from p into the buffer. -// It is an error to write more data than the buffer can hold. -func (b *fixedBuffer) Write(p []byte) (n int, err error) { - // Slide existing data to beginning. - if b.r > 0 && len(p) > len(b.buf)-b.w { - copy(b.buf, b.buf[b.r:b.w]) - b.w -= b.r - b.r = 0 - } - - // Write new data. - n = copy(b.buf[b.w:], p) - b.w += n - if n < len(p) { - err = errWriteFull - } - return n, err -} diff --git a/vendor/golang.org/x/net/http2/flow.go b/vendor/golang.org/x/net/http2/flow.go deleted file mode 100644 index 957de25420..0000000000 --- a/vendor/golang.org/x/net/http2/flow.go +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Flow control - -package http2 - -// flow is the flow control window's size. -type flow struct { - // n is the number of DATA bytes we're allowed to send. - // A flow is kept both on a conn and a per-stream. - n int32 - - // conn points to the shared connection-level flow that is - // shared by all streams on that conn. It is nil for the flow - // that's on the conn directly. - conn *flow -} - -func (f *flow) setConnFlow(cf *flow) { f.conn = cf } - -func (f *flow) available() int32 { - n := f.n - if f.conn != nil && f.conn.n < n { - n = f.conn.n - } - return n -} - -func (f *flow) take(n int32) { - if n > f.available() { - panic("internal error: took too much") - } - f.n -= n - if f.conn != nil { - f.conn.n -= n - } -} - -// add adds n bytes (positive or negative) to the flow control window. -// It returns false if the sum would exceed 2^31-1. -func (f *flow) add(n int32) bool { - remain := (1<<31 - 1) - f.n - if n > remain { - return false - } - f.n += n - return true -} diff --git a/vendor/golang.org/x/net/http2/frame.go b/vendor/golang.org/x/net/http2/frame.go deleted file mode 100644 index c9b09bb675..0000000000 --- a/vendor/golang.org/x/net/http2/frame.go +++ /dev/null @@ -1,1539 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package http2 - -import ( - "bytes" - "encoding/binary" - "errors" - "fmt" - "io" - "log" - "strings" - "sync" - - "golang.org/x/net/http2/hpack" - "golang.org/x/net/lex/httplex" -) - -const frameHeaderLen = 9 - -var padZeros = make([]byte, 255) // zeros for padding - -// A FrameType is a registered frame type as defined in -// http://http2.github.io/http2-spec/#rfc.section.11.2 -type FrameType uint8 - -const ( - FrameData FrameType = 0x0 - FrameHeaders FrameType = 0x1 - FramePriority FrameType = 0x2 - FrameRSTStream FrameType = 0x3 - FrameSettings FrameType = 0x4 - FramePushPromise FrameType = 0x5 - FramePing FrameType = 0x6 - FrameGoAway FrameType = 0x7 - FrameWindowUpdate FrameType = 0x8 - FrameContinuation FrameType = 0x9 -) - -var frameName = map[FrameType]string{ - FrameData: "DATA", - FrameHeaders: "HEADERS", - FramePriority: "PRIORITY", - FrameRSTStream: "RST_STREAM", - FrameSettings: "SETTINGS", - FramePushPromise: "PUSH_PROMISE", - FramePing: "PING", - FrameGoAway: "GOAWAY", - FrameWindowUpdate: "WINDOW_UPDATE", - FrameContinuation: "CONTINUATION", -} - -func (t FrameType) String() string { - if s, ok := frameName[t]; ok { - return s - } - return fmt.Sprintf("UNKNOWN_FRAME_TYPE_%d", uint8(t)) -} - -// Flags is a bitmask of HTTP/2 flags. -// The meaning of flags varies depending on the frame type. -type Flags uint8 - -// Has reports whether f contains all (0 or more) flags in v. -func (f Flags) Has(v Flags) bool { - return (f & v) == v -} - -// Frame-specific FrameHeader flag bits. -const ( - // Data Frame - FlagDataEndStream Flags = 0x1 - FlagDataPadded Flags = 0x8 - - // Headers Frame - FlagHeadersEndStream Flags = 0x1 - FlagHeadersEndHeaders Flags = 0x4 - FlagHeadersPadded Flags = 0x8 - FlagHeadersPriority Flags = 0x20 - - // Settings Frame - FlagSettingsAck Flags = 0x1 - - // Ping Frame - FlagPingAck Flags = 0x1 - - // Continuation Frame - FlagContinuationEndHeaders Flags = 0x4 - - FlagPushPromiseEndHeaders Flags = 0x4 - FlagPushPromisePadded Flags = 0x8 -) - -var flagName = map[FrameType]map[Flags]string{ - FrameData: { - FlagDataEndStream: "END_STREAM", - FlagDataPadded: "PADDED", - }, - FrameHeaders: { - FlagHeadersEndStream: "END_STREAM", - FlagHeadersEndHeaders: "END_HEADERS", - FlagHeadersPadded: "PADDED", - FlagHeadersPriority: "PRIORITY", - }, - FrameSettings: { - FlagSettingsAck: "ACK", - }, - FramePing: { - FlagPingAck: "ACK", - }, - FrameContinuation: { - FlagContinuationEndHeaders: "END_HEADERS", - }, - FramePushPromise: { - FlagPushPromiseEndHeaders: "END_HEADERS", - FlagPushPromisePadded: "PADDED", - }, -} - -// a frameParser parses a frame given its FrameHeader and payload -// bytes. The length of payload will always equal fh.Length (which -// might be 0). -type frameParser func(fh FrameHeader, payload []byte) (Frame, error) - -var frameParsers = map[FrameType]frameParser{ - FrameData: parseDataFrame, - FrameHeaders: parseHeadersFrame, - FramePriority: parsePriorityFrame, - FrameRSTStream: parseRSTStreamFrame, - FrameSettings: parseSettingsFrame, - FramePushPromise: parsePushPromise, - FramePing: parsePingFrame, - FrameGoAway: parseGoAwayFrame, - FrameWindowUpdate: parseWindowUpdateFrame, - FrameContinuation: parseContinuationFrame, -} - -func typeFrameParser(t FrameType) frameParser { - if f := frameParsers[t]; f != nil { - return f - } - return parseUnknownFrame -} - -// A FrameHeader is the 9 byte header of all HTTP/2 frames. -// -// See http://http2.github.io/http2-spec/#FrameHeader -type FrameHeader struct { - valid bool // caller can access []byte fields in the Frame - - // Type is the 1 byte frame type. There are ten standard frame - // types, but extension frame types may be written by WriteRawFrame - // and will be returned by ReadFrame (as UnknownFrame). - Type FrameType - - // Flags are the 1 byte of 8 potential bit flags per frame. - // They are specific to the frame type. - Flags Flags - - // Length is the length of the frame, not including the 9 byte header. - // The maximum size is one byte less than 16MB (uint24), but only - // frames up to 16KB are allowed without peer agreement. - Length uint32 - - // StreamID is which stream this frame is for. Certain frames - // are not stream-specific, in which case this field is 0. - StreamID uint32 -} - -// Header returns h. It exists so FrameHeaders can be embedded in other -// specific frame types and implement the Frame interface. -func (h FrameHeader) Header() FrameHeader { return h } - -func (h FrameHeader) String() string { - var buf bytes.Buffer - buf.WriteString("[FrameHeader ") - h.writeDebug(&buf) - buf.WriteByte(']') - return buf.String() -} - -func (h FrameHeader) writeDebug(buf *bytes.Buffer) { - buf.WriteString(h.Type.String()) - if h.Flags != 0 { - buf.WriteString(" flags=") - set := 0 - for i := uint8(0); i < 8; i++ { - if h.Flags&(1< 1 { - buf.WriteByte('|') - } - name := flagName[h.Type][Flags(1<>24), - byte(streamID>>16), - byte(streamID>>8), - byte(streamID)) -} - -func (f *Framer) endWrite() error { - // Now that we know the final size, fill in the FrameHeader in - // the space previously reserved for it. Abuse append. - length := len(f.wbuf) - frameHeaderLen - if length >= (1 << 24) { - return ErrFrameTooLarge - } - _ = append(f.wbuf[:0], - byte(length>>16), - byte(length>>8), - byte(length)) - if logFrameWrites { - f.logWrite() - } - - n, err := f.w.Write(f.wbuf) - if err == nil && n != len(f.wbuf) { - err = io.ErrShortWrite - } - return err -} - -func (f *Framer) logWrite() { - if f.debugFramer == nil { - f.debugFramerBuf = new(bytes.Buffer) - f.debugFramer = NewFramer(nil, f.debugFramerBuf) - f.debugFramer.logReads = false // we log it ourselves, saying "wrote" below - // Let us read anything, even if we accidentally wrote it - // in the wrong order: - f.debugFramer.AllowIllegalReads = true - } - f.debugFramerBuf.Write(f.wbuf) - fr, err := f.debugFramer.ReadFrame() - if err != nil { - log.Printf("http2: Framer %p: failed to decode just-written frame", f) - return - } - log.Printf("http2: Framer %p: wrote %v", f, summarizeFrame(fr)) -} - -func (f *Framer) writeByte(v byte) { f.wbuf = append(f.wbuf, v) } -func (f *Framer) writeBytes(v []byte) { f.wbuf = append(f.wbuf, v...) } -func (f *Framer) writeUint16(v uint16) { f.wbuf = append(f.wbuf, byte(v>>8), byte(v)) } -func (f *Framer) writeUint32(v uint32) { - f.wbuf = append(f.wbuf, byte(v>>24), byte(v>>16), byte(v>>8), byte(v)) -} - -const ( - minMaxFrameSize = 1 << 14 - maxFrameSize = 1<<24 - 1 -) - -// NewFramer returns a Framer that writes frames to w and reads them from r. -func NewFramer(w io.Writer, r io.Reader) *Framer { - fr := &Framer{ - w: w, - r: r, - logReads: logFrameReads, - } - fr.getReadBuf = func(size uint32) []byte { - if cap(fr.readBuf) >= int(size) { - return fr.readBuf[:size] - } - fr.readBuf = make([]byte, size) - return fr.readBuf - } - fr.SetMaxReadFrameSize(maxFrameSize) - return fr -} - -// SetMaxReadFrameSize sets the maximum size of a frame -// that will be read by a subsequent call to ReadFrame. -// It is the caller's responsibility to advertise this -// limit with a SETTINGS frame. -func (fr *Framer) SetMaxReadFrameSize(v uint32) { - if v > maxFrameSize { - v = maxFrameSize - } - fr.maxReadSize = v -} - -// ErrorDetail returns a more detailed error of the last error -// returned by Framer.ReadFrame. For instance, if ReadFrame -// returns a StreamError with code PROTOCOL_ERROR, ErrorDetail -// will say exactly what was invalid. ErrorDetail is not guaranteed -// to return a non-nil value and like the rest of the http2 package, -// its return value is not protected by an API compatibility promise. -// ErrorDetail is reset after the next call to ReadFrame. -func (fr *Framer) ErrorDetail() error { - return fr.errDetail -} - -// ErrFrameTooLarge is returned from Framer.ReadFrame when the peer -// sends a frame that is larger than declared with SetMaxReadFrameSize. -var ErrFrameTooLarge = errors.New("http2: frame too large") - -// terminalReadFrameError reports whether err is an unrecoverable -// error from ReadFrame and no other frames should be read. -func terminalReadFrameError(err error) bool { - if _, ok := err.(StreamError); ok { - return false - } - return err != nil -} - -// ReadFrame reads a single frame. The returned Frame is only valid -// until the next call to ReadFrame. -// -// If the frame is larger than previously set with SetMaxReadFrameSize, the -// returned error is ErrFrameTooLarge. Other errors may be of type -// ConnectionError, StreamError, or anything else from the underlying -// reader. -func (fr *Framer) ReadFrame() (Frame, error) { - fr.errDetail = nil - if fr.lastFrame != nil { - fr.lastFrame.invalidate() - } - fh, err := readFrameHeader(fr.headerBuf[:], fr.r) - if err != nil { - return nil, err - } - if fh.Length > fr.maxReadSize { - return nil, ErrFrameTooLarge - } - payload := fr.getReadBuf(fh.Length) - if _, err := io.ReadFull(fr.r, payload); err != nil { - return nil, err - } - f, err := typeFrameParser(fh.Type)(fh, payload) - if err != nil { - if ce, ok := err.(connError); ok { - return nil, fr.connError(ce.Code, ce.Reason) - } - return nil, err - } - if err := fr.checkFrameOrder(f); err != nil { - return nil, err - } - if fr.logReads { - log.Printf("http2: Framer %p: read %v", fr, summarizeFrame(f)) - } - if fh.Type == FrameHeaders && fr.ReadMetaHeaders != nil { - return fr.readMetaFrame(f.(*HeadersFrame)) - } - return f, nil -} - -// connError returns ConnectionError(code) but first -// stashes away a public reason to the caller can optionally relay it -// to the peer before hanging up on them. This might help others debug -// their implementations. -func (fr *Framer) connError(code ErrCode, reason string) error { - fr.errDetail = errors.New(reason) - return ConnectionError(code) -} - -// checkFrameOrder reports an error if f is an invalid frame to return -// next from ReadFrame. Mostly it checks whether HEADERS and -// CONTINUATION frames are contiguous. -func (fr *Framer) checkFrameOrder(f Frame) error { - last := fr.lastFrame - fr.lastFrame = f - if fr.AllowIllegalReads { - return nil - } - - fh := f.Header() - if fr.lastHeaderStream != 0 { - if fh.Type != FrameContinuation { - return fr.connError(ErrCodeProtocol, - fmt.Sprintf("got %s for stream %d; expected CONTINUATION following %s for stream %d", - fh.Type, fh.StreamID, - last.Header().Type, fr.lastHeaderStream)) - } - if fh.StreamID != fr.lastHeaderStream { - return fr.connError(ErrCodeProtocol, - fmt.Sprintf("got CONTINUATION for stream %d; expected stream %d", - fh.StreamID, fr.lastHeaderStream)) - } - } else if fh.Type == FrameContinuation { - return fr.connError(ErrCodeProtocol, fmt.Sprintf("unexpected CONTINUATION for stream %d", fh.StreamID)) - } - - switch fh.Type { - case FrameHeaders, FrameContinuation: - if fh.Flags.Has(FlagHeadersEndHeaders) { - fr.lastHeaderStream = 0 - } else { - fr.lastHeaderStream = fh.StreamID - } - } - - return nil -} - -// A DataFrame conveys arbitrary, variable-length sequences of octets -// associated with a stream. -// See http://http2.github.io/http2-spec/#rfc.section.6.1 -type DataFrame struct { - FrameHeader - data []byte -} - -func (f *DataFrame) StreamEnded() bool { - return f.FrameHeader.Flags.Has(FlagDataEndStream) -} - -// Data returns the frame's data octets, not including any padding -// size byte or padding suffix bytes. -// The caller must not retain the returned memory past the next -// call to ReadFrame. -func (f *DataFrame) Data() []byte { - f.checkValid() - return f.data -} - -func parseDataFrame(fh FrameHeader, payload []byte) (Frame, error) { - if fh.StreamID == 0 { - // DATA frames MUST be associated with a stream. If a - // DATA frame is received whose stream identifier - // field is 0x0, the recipient MUST respond with a - // connection error (Section 5.4.1) of type - // PROTOCOL_ERROR. - return nil, connError{ErrCodeProtocol, "DATA frame with stream ID 0"} - } - f := &DataFrame{ - FrameHeader: fh, - } - var padSize byte - if fh.Flags.Has(FlagDataPadded) { - var err error - payload, padSize, err = readByte(payload) - if err != nil { - return nil, err - } - } - if int(padSize) > len(payload) { - // If the length of the padding is greater than the - // length of the frame payload, the recipient MUST - // treat this as a connection error. - // Filed: https://github.com/http2/http2-spec/issues/610 - return nil, connError{ErrCodeProtocol, "pad size larger than data payload"} - } - f.data = payload[:len(payload)-int(padSize)] - return f, nil -} - -var ( - errStreamID = errors.New("invalid stream ID") - errDepStreamID = errors.New("invalid dependent stream ID") - errPadLength = errors.New("pad length too large") -) - -func validStreamIDOrZero(streamID uint32) bool { - return streamID&(1<<31) == 0 -} - -func validStreamID(streamID uint32) bool { - return streamID != 0 && streamID&(1<<31) == 0 -} - -// WriteData writes a DATA frame. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility not to violate the maximum frame size -// and to not call other Write methods concurrently. -func (f *Framer) WriteData(streamID uint32, endStream bool, data []byte) error { - return f.WriteDataPadded(streamID, endStream, data, nil) -} - -// WriteData writes a DATA frame with optional padding. -// -// If pad is nil, the padding bit is not sent. -// The length of pad must not exceed 255 bytes. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility not to violate the maximum frame size -// and to not call other Write methods concurrently. -func (f *Framer) WriteDataPadded(streamID uint32, endStream bool, data, pad []byte) error { - if !validStreamID(streamID) && !f.AllowIllegalWrites { - return errStreamID - } - if len(pad) > 255 { - return errPadLength - } - var flags Flags - if endStream { - flags |= FlagDataEndStream - } - if pad != nil { - flags |= FlagDataPadded - } - f.startWrite(FrameData, flags, streamID) - if pad != nil { - f.wbuf = append(f.wbuf, byte(len(pad))) - } - f.wbuf = append(f.wbuf, data...) - f.wbuf = append(f.wbuf, pad...) - return f.endWrite() -} - -// A SettingsFrame conveys configuration parameters that affect how -// endpoints communicate, such as preferences and constraints on peer -// behavior. -// -// See http://http2.github.io/http2-spec/#SETTINGS -type SettingsFrame struct { - FrameHeader - p []byte -} - -func parseSettingsFrame(fh FrameHeader, p []byte) (Frame, error) { - if fh.Flags.Has(FlagSettingsAck) && fh.Length > 0 { - // When this (ACK 0x1) bit is set, the payload of the - // SETTINGS frame MUST be empty. Receipt of a - // SETTINGS frame with the ACK flag set and a length - // field value other than 0 MUST be treated as a - // connection error (Section 5.4.1) of type - // FRAME_SIZE_ERROR. - return nil, ConnectionError(ErrCodeFrameSize) - } - if fh.StreamID != 0 { - // SETTINGS frames always apply to a connection, - // never a single stream. The stream identifier for a - // SETTINGS frame MUST be zero (0x0). If an endpoint - // receives a SETTINGS frame whose stream identifier - // field is anything other than 0x0, the endpoint MUST - // respond with a connection error (Section 5.4.1) of - // type PROTOCOL_ERROR. - return nil, ConnectionError(ErrCodeProtocol) - } - if len(p)%6 != 0 { - // Expecting even number of 6 byte settings. - return nil, ConnectionError(ErrCodeFrameSize) - } - f := &SettingsFrame{FrameHeader: fh, p: p} - if v, ok := f.Value(SettingInitialWindowSize); ok && v > (1<<31)-1 { - // Values above the maximum flow control window size of 2^31 - 1 MUST - // be treated as a connection error (Section 5.4.1) of type - // FLOW_CONTROL_ERROR. - return nil, ConnectionError(ErrCodeFlowControl) - } - return f, nil -} - -func (f *SettingsFrame) IsAck() bool { - return f.FrameHeader.Flags.Has(FlagSettingsAck) -} - -func (f *SettingsFrame) Value(s SettingID) (v uint32, ok bool) { - f.checkValid() - buf := f.p - for len(buf) > 0 { - settingID := SettingID(binary.BigEndian.Uint16(buf[:2])) - if settingID == s { - return binary.BigEndian.Uint32(buf[2:6]), true - } - buf = buf[6:] - } - return 0, false -} - -// ForeachSetting runs fn for each setting. -// It stops and returns the first error. -func (f *SettingsFrame) ForeachSetting(fn func(Setting) error) error { - f.checkValid() - buf := f.p - for len(buf) > 0 { - if err := fn(Setting{ - SettingID(binary.BigEndian.Uint16(buf[:2])), - binary.BigEndian.Uint32(buf[2:6]), - }); err != nil { - return err - } - buf = buf[6:] - } - return nil -} - -// WriteSettings writes a SETTINGS frame with zero or more settings -// specified and the ACK bit not set. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility to not call other Write methods concurrently. -func (f *Framer) WriteSettings(settings ...Setting) error { - f.startWrite(FrameSettings, 0, 0) - for _, s := range settings { - f.writeUint16(uint16(s.ID)) - f.writeUint32(s.Val) - } - return f.endWrite() -} - -// WriteSettings writes an empty SETTINGS frame with the ACK bit set. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility to not call other Write methods concurrently. -func (f *Framer) WriteSettingsAck() error { - f.startWrite(FrameSettings, FlagSettingsAck, 0) - return f.endWrite() -} - -// A PingFrame is a mechanism for measuring a minimal round trip time -// from the sender, as well as determining whether an idle connection -// is still functional. -// See http://http2.github.io/http2-spec/#rfc.section.6.7 -type PingFrame struct { - FrameHeader - Data [8]byte -} - -func (f *PingFrame) IsAck() bool { return f.Flags.Has(FlagPingAck) } - -func parsePingFrame(fh FrameHeader, payload []byte) (Frame, error) { - if len(payload) != 8 { - return nil, ConnectionError(ErrCodeFrameSize) - } - if fh.StreamID != 0 { - return nil, ConnectionError(ErrCodeProtocol) - } - f := &PingFrame{FrameHeader: fh} - copy(f.Data[:], payload) - return f, nil -} - -func (f *Framer) WritePing(ack bool, data [8]byte) error { - var flags Flags - if ack { - flags = FlagPingAck - } - f.startWrite(FramePing, flags, 0) - f.writeBytes(data[:]) - return f.endWrite() -} - -// A GoAwayFrame informs the remote peer to stop creating streams on this connection. -// See http://http2.github.io/http2-spec/#rfc.section.6.8 -type GoAwayFrame struct { - FrameHeader - LastStreamID uint32 - ErrCode ErrCode - debugData []byte -} - -// DebugData returns any debug data in the GOAWAY frame. Its contents -// are not defined. -// The caller must not retain the returned memory past the next -// call to ReadFrame. -func (f *GoAwayFrame) DebugData() []byte { - f.checkValid() - return f.debugData -} - -func parseGoAwayFrame(fh FrameHeader, p []byte) (Frame, error) { - if fh.StreamID != 0 { - return nil, ConnectionError(ErrCodeProtocol) - } - if len(p) < 8 { - return nil, ConnectionError(ErrCodeFrameSize) - } - return &GoAwayFrame{ - FrameHeader: fh, - LastStreamID: binary.BigEndian.Uint32(p[:4]) & (1<<31 - 1), - ErrCode: ErrCode(binary.BigEndian.Uint32(p[4:8])), - debugData: p[8:], - }, nil -} - -func (f *Framer) WriteGoAway(maxStreamID uint32, code ErrCode, debugData []byte) error { - f.startWrite(FrameGoAway, 0, 0) - f.writeUint32(maxStreamID & (1<<31 - 1)) - f.writeUint32(uint32(code)) - f.writeBytes(debugData) - return f.endWrite() -} - -// An UnknownFrame is the frame type returned when the frame type is unknown -// or no specific frame type parser exists. -type UnknownFrame struct { - FrameHeader - p []byte -} - -// Payload returns the frame's payload (after the header). It is not -// valid to call this method after a subsequent call to -// Framer.ReadFrame, nor is it valid to retain the returned slice. -// The memory is owned by the Framer and is invalidated when the next -// frame is read. -func (f *UnknownFrame) Payload() []byte { - f.checkValid() - return f.p -} - -func parseUnknownFrame(fh FrameHeader, p []byte) (Frame, error) { - return &UnknownFrame{fh, p}, nil -} - -// A WindowUpdateFrame is used to implement flow control. -// See http://http2.github.io/http2-spec/#rfc.section.6.9 -type WindowUpdateFrame struct { - FrameHeader - Increment uint32 // never read with high bit set -} - -func parseWindowUpdateFrame(fh FrameHeader, p []byte) (Frame, error) { - if len(p) != 4 { - return nil, ConnectionError(ErrCodeFrameSize) - } - inc := binary.BigEndian.Uint32(p[:4]) & 0x7fffffff // mask off high reserved bit - if inc == 0 { - // A receiver MUST treat the receipt of a - // WINDOW_UPDATE frame with an flow control window - // increment of 0 as a stream error (Section 5.4.2) of - // type PROTOCOL_ERROR; errors on the connection flow - // control window MUST be treated as a connection - // error (Section 5.4.1). - if fh.StreamID == 0 { - return nil, ConnectionError(ErrCodeProtocol) - } - return nil, streamError(fh.StreamID, ErrCodeProtocol) - } - return &WindowUpdateFrame{ - FrameHeader: fh, - Increment: inc, - }, nil -} - -// WriteWindowUpdate writes a WINDOW_UPDATE frame. -// The increment value must be between 1 and 2,147,483,647, inclusive. -// If the Stream ID is zero, the window update applies to the -// connection as a whole. -func (f *Framer) WriteWindowUpdate(streamID, incr uint32) error { - // "The legal range for the increment to the flow control window is 1 to 2^31-1 (2,147,483,647) octets." - if (incr < 1 || incr > 2147483647) && !f.AllowIllegalWrites { - return errors.New("illegal window increment value") - } - f.startWrite(FrameWindowUpdate, 0, streamID) - f.writeUint32(incr) - return f.endWrite() -} - -// A HeadersFrame is used to open a stream and additionally carries a -// header block fragment. -type HeadersFrame struct { - FrameHeader - - // Priority is set if FlagHeadersPriority is set in the FrameHeader. - Priority PriorityParam - - headerFragBuf []byte // not owned -} - -func (f *HeadersFrame) HeaderBlockFragment() []byte { - f.checkValid() - return f.headerFragBuf -} - -func (f *HeadersFrame) HeadersEnded() bool { - return f.FrameHeader.Flags.Has(FlagHeadersEndHeaders) -} - -func (f *HeadersFrame) StreamEnded() bool { - return f.FrameHeader.Flags.Has(FlagHeadersEndStream) -} - -func (f *HeadersFrame) HasPriority() bool { - return f.FrameHeader.Flags.Has(FlagHeadersPriority) -} - -func parseHeadersFrame(fh FrameHeader, p []byte) (_ Frame, err error) { - hf := &HeadersFrame{ - FrameHeader: fh, - } - if fh.StreamID == 0 { - // HEADERS frames MUST be associated with a stream. If a HEADERS frame - // is received whose stream identifier field is 0x0, the recipient MUST - // respond with a connection error (Section 5.4.1) of type - // PROTOCOL_ERROR. - return nil, connError{ErrCodeProtocol, "HEADERS frame with stream ID 0"} - } - var padLength uint8 - if fh.Flags.Has(FlagHeadersPadded) { - if p, padLength, err = readByte(p); err != nil { - return - } - } - if fh.Flags.Has(FlagHeadersPriority) { - var v uint32 - p, v, err = readUint32(p) - if err != nil { - return nil, err - } - hf.Priority.StreamDep = v & 0x7fffffff - hf.Priority.Exclusive = (v != hf.Priority.StreamDep) // high bit was set - p, hf.Priority.Weight, err = readByte(p) - if err != nil { - return nil, err - } - } - if len(p)-int(padLength) <= 0 { - return nil, streamError(fh.StreamID, ErrCodeProtocol) - } - hf.headerFragBuf = p[:len(p)-int(padLength)] - return hf, nil -} - -// HeadersFrameParam are the parameters for writing a HEADERS frame. -type HeadersFrameParam struct { - // StreamID is the required Stream ID to initiate. - StreamID uint32 - // BlockFragment is part (or all) of a Header Block. - BlockFragment []byte - - // EndStream indicates that the header block is the last that - // the endpoint will send for the identified stream. Setting - // this flag causes the stream to enter one of "half closed" - // states. - EndStream bool - - // EndHeaders indicates that this frame contains an entire - // header block and is not followed by any - // CONTINUATION frames. - EndHeaders bool - - // PadLength is the optional number of bytes of zeros to add - // to this frame. - PadLength uint8 - - // Priority, if non-zero, includes stream priority information - // in the HEADER frame. - Priority PriorityParam -} - -// WriteHeaders writes a single HEADERS frame. -// -// This is a low-level header writing method. Encoding headers and -// splitting them into any necessary CONTINUATION frames is handled -// elsewhere. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility to not call other Write methods concurrently. -func (f *Framer) WriteHeaders(p HeadersFrameParam) error { - if !validStreamID(p.StreamID) && !f.AllowIllegalWrites { - return errStreamID - } - var flags Flags - if p.PadLength != 0 { - flags |= FlagHeadersPadded - } - if p.EndStream { - flags |= FlagHeadersEndStream - } - if p.EndHeaders { - flags |= FlagHeadersEndHeaders - } - if !p.Priority.IsZero() { - flags |= FlagHeadersPriority - } - f.startWrite(FrameHeaders, flags, p.StreamID) - if p.PadLength != 0 { - f.writeByte(p.PadLength) - } - if !p.Priority.IsZero() { - v := p.Priority.StreamDep - if !validStreamIDOrZero(v) && !f.AllowIllegalWrites { - return errDepStreamID - } - if p.Priority.Exclusive { - v |= 1 << 31 - } - f.writeUint32(v) - f.writeByte(p.Priority.Weight) - } - f.wbuf = append(f.wbuf, p.BlockFragment...) - f.wbuf = append(f.wbuf, padZeros[:p.PadLength]...) - return f.endWrite() -} - -// A PriorityFrame specifies the sender-advised priority of a stream. -// See http://http2.github.io/http2-spec/#rfc.section.6.3 -type PriorityFrame struct { - FrameHeader - PriorityParam -} - -// PriorityParam are the stream prioritzation parameters. -type PriorityParam struct { - // StreamDep is a 31-bit stream identifier for the - // stream that this stream depends on. Zero means no - // dependency. - StreamDep uint32 - - // Exclusive is whether the dependency is exclusive. - Exclusive bool - - // Weight is the stream's zero-indexed weight. It should be - // set together with StreamDep, or neither should be set. Per - // the spec, "Add one to the value to obtain a weight between - // 1 and 256." - Weight uint8 -} - -func (p PriorityParam) IsZero() bool { - return p == PriorityParam{} -} - -func parsePriorityFrame(fh FrameHeader, payload []byte) (Frame, error) { - if fh.StreamID == 0 { - return nil, connError{ErrCodeProtocol, "PRIORITY frame with stream ID 0"} - } - if len(payload) != 5 { - return nil, connError{ErrCodeFrameSize, fmt.Sprintf("PRIORITY frame payload size was %d; want 5", len(payload))} - } - v := binary.BigEndian.Uint32(payload[:4]) - streamID := v & 0x7fffffff // mask off high bit - return &PriorityFrame{ - FrameHeader: fh, - PriorityParam: PriorityParam{ - Weight: payload[4], - StreamDep: streamID, - Exclusive: streamID != v, // was high bit set? - }, - }, nil -} - -// WritePriority writes a PRIORITY frame. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility to not call other Write methods concurrently. -func (f *Framer) WritePriority(streamID uint32, p PriorityParam) error { - if !validStreamID(streamID) && !f.AllowIllegalWrites { - return errStreamID - } - if !validStreamIDOrZero(p.StreamDep) { - return errDepStreamID - } - f.startWrite(FramePriority, 0, streamID) - v := p.StreamDep - if p.Exclusive { - v |= 1 << 31 - } - f.writeUint32(v) - f.writeByte(p.Weight) - return f.endWrite() -} - -// A RSTStreamFrame allows for abnormal termination of a stream. -// See http://http2.github.io/http2-spec/#rfc.section.6.4 -type RSTStreamFrame struct { - FrameHeader - ErrCode ErrCode -} - -func parseRSTStreamFrame(fh FrameHeader, p []byte) (Frame, error) { - if len(p) != 4 { - return nil, ConnectionError(ErrCodeFrameSize) - } - if fh.StreamID == 0 { - return nil, ConnectionError(ErrCodeProtocol) - } - return &RSTStreamFrame{fh, ErrCode(binary.BigEndian.Uint32(p[:4]))}, nil -} - -// WriteRSTStream writes a RST_STREAM frame. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility to not call other Write methods concurrently. -func (f *Framer) WriteRSTStream(streamID uint32, code ErrCode) error { - if !validStreamID(streamID) && !f.AllowIllegalWrites { - return errStreamID - } - f.startWrite(FrameRSTStream, 0, streamID) - f.writeUint32(uint32(code)) - return f.endWrite() -} - -// A ContinuationFrame is used to continue a sequence of header block fragments. -// See http://http2.github.io/http2-spec/#rfc.section.6.10 -type ContinuationFrame struct { - FrameHeader - headerFragBuf []byte -} - -func parseContinuationFrame(fh FrameHeader, p []byte) (Frame, error) { - if fh.StreamID == 0 { - return nil, connError{ErrCodeProtocol, "CONTINUATION frame with stream ID 0"} - } - return &ContinuationFrame{fh, p}, nil -} - -func (f *ContinuationFrame) HeaderBlockFragment() []byte { - f.checkValid() - return f.headerFragBuf -} - -func (f *ContinuationFrame) HeadersEnded() bool { - return f.FrameHeader.Flags.Has(FlagContinuationEndHeaders) -} - -// WriteContinuation writes a CONTINUATION frame. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility to not call other Write methods concurrently. -func (f *Framer) WriteContinuation(streamID uint32, endHeaders bool, headerBlockFragment []byte) error { - if !validStreamID(streamID) && !f.AllowIllegalWrites { - return errStreamID - } - var flags Flags - if endHeaders { - flags |= FlagContinuationEndHeaders - } - f.startWrite(FrameContinuation, flags, streamID) - f.wbuf = append(f.wbuf, headerBlockFragment...) - return f.endWrite() -} - -// A PushPromiseFrame is used to initiate a server stream. -// See http://http2.github.io/http2-spec/#rfc.section.6.6 -type PushPromiseFrame struct { - FrameHeader - PromiseID uint32 - headerFragBuf []byte // not owned -} - -func (f *PushPromiseFrame) HeaderBlockFragment() []byte { - f.checkValid() - return f.headerFragBuf -} - -func (f *PushPromiseFrame) HeadersEnded() bool { - return f.FrameHeader.Flags.Has(FlagPushPromiseEndHeaders) -} - -func parsePushPromise(fh FrameHeader, p []byte) (_ Frame, err error) { - pp := &PushPromiseFrame{ - FrameHeader: fh, - } - if pp.StreamID == 0 { - // PUSH_PROMISE frames MUST be associated with an existing, - // peer-initiated stream. The stream identifier of a - // PUSH_PROMISE frame indicates the stream it is associated - // with. If the stream identifier field specifies the value - // 0x0, a recipient MUST respond with a connection error - // (Section 5.4.1) of type PROTOCOL_ERROR. - return nil, ConnectionError(ErrCodeProtocol) - } - // The PUSH_PROMISE frame includes optional padding. - // Padding fields and flags are identical to those defined for DATA frames - var padLength uint8 - if fh.Flags.Has(FlagPushPromisePadded) { - if p, padLength, err = readByte(p); err != nil { - return - } - } - - p, pp.PromiseID, err = readUint32(p) - if err != nil { - return - } - pp.PromiseID = pp.PromiseID & (1<<31 - 1) - - if int(padLength) > len(p) { - // like the DATA frame, error out if padding is longer than the body. - return nil, ConnectionError(ErrCodeProtocol) - } - pp.headerFragBuf = p[:len(p)-int(padLength)] - return pp, nil -} - -// PushPromiseParam are the parameters for writing a PUSH_PROMISE frame. -type PushPromiseParam struct { - // StreamID is the required Stream ID to initiate. - StreamID uint32 - - // PromiseID is the required Stream ID which this - // Push Promises - PromiseID uint32 - - // BlockFragment is part (or all) of a Header Block. - BlockFragment []byte - - // EndHeaders indicates that this frame contains an entire - // header block and is not followed by any - // CONTINUATION frames. - EndHeaders bool - - // PadLength is the optional number of bytes of zeros to add - // to this frame. - PadLength uint8 -} - -// WritePushPromise writes a single PushPromise Frame. -// -// As with Header Frames, This is the low level call for writing -// individual frames. Continuation frames are handled elsewhere. -// -// It will perform exactly one Write to the underlying Writer. -// It is the caller's responsibility to not call other Write methods concurrently. -func (f *Framer) WritePushPromise(p PushPromiseParam) error { - if !validStreamID(p.StreamID) && !f.AllowIllegalWrites { - return errStreamID - } - var flags Flags - if p.PadLength != 0 { - flags |= FlagPushPromisePadded - } - if p.EndHeaders { - flags |= FlagPushPromiseEndHeaders - } - f.startWrite(FramePushPromise, flags, p.StreamID) - if p.PadLength != 0 { - f.writeByte(p.PadLength) - } - if !validStreamID(p.PromiseID) && !f.AllowIllegalWrites { - return errStreamID - } - f.writeUint32(p.PromiseID) - f.wbuf = append(f.wbuf, p.BlockFragment...) - f.wbuf = append(f.wbuf, padZeros[:p.PadLength]...) - return f.endWrite() -} - -// WriteRawFrame writes a raw frame. This can be used to write -// extension frames unknown to this package. -func (f *Framer) WriteRawFrame(t FrameType, flags Flags, streamID uint32, payload []byte) error { - f.startWrite(t, flags, streamID) - f.writeBytes(payload) - return f.endWrite() -} - -func readByte(p []byte) (remain []byte, b byte, err error) { - if len(p) == 0 { - return nil, 0, io.ErrUnexpectedEOF - } - return p[1:], p[0], nil -} - -func readUint32(p []byte) (remain []byte, v uint32, err error) { - if len(p) < 4 { - return nil, 0, io.ErrUnexpectedEOF - } - return p[4:], binary.BigEndian.Uint32(p[:4]), nil -} - -type streamEnder interface { - StreamEnded() bool -} - -type headersEnder interface { - HeadersEnded() bool -} - -type headersOrContinuation interface { - headersEnder - HeaderBlockFragment() []byte -} - -// A MetaHeadersFrame is the representation of one HEADERS frame and -// zero or more contiguous CONTINUATION frames and the decoding of -// their HPACK-encoded contents. -// -// This type of frame does not appear on the wire and is only returned -// by the Framer when Framer.ReadMetaHeaders is set. -type MetaHeadersFrame struct { - *HeadersFrame - - // Fields are the fields contained in the HEADERS and - // CONTINUATION frames. The underlying slice is owned by the - // Framer and must not be retained after the next call to - // ReadFrame. - // - // Fields are guaranteed to be in the correct http2 order and - // not have unknown pseudo header fields or invalid header - // field names or values. Required pseudo header fields may be - // missing, however. Use the MetaHeadersFrame.Pseudo accessor - // method access pseudo headers. - Fields []hpack.HeaderField - - // Truncated is whether the max header list size limit was hit - // and Fields is incomplete. The hpack decoder state is still - // valid, however. - Truncated bool -} - -// PseudoValue returns the given pseudo header field's value. -// The provided pseudo field should not contain the leading colon. -func (mh *MetaHeadersFrame) PseudoValue(pseudo string) string { - for _, hf := range mh.Fields { - if !hf.IsPseudo() { - return "" - } - if hf.Name[1:] == pseudo { - return hf.Value - } - } - return "" -} - -// RegularFields returns the regular (non-pseudo) header fields of mh. -// The caller does not own the returned slice. -func (mh *MetaHeadersFrame) RegularFields() []hpack.HeaderField { - for i, hf := range mh.Fields { - if !hf.IsPseudo() { - return mh.Fields[i:] - } - } - return nil -} - -// PseudoFields returns the pseudo header fields of mh. -// The caller does not own the returned slice. -func (mh *MetaHeadersFrame) PseudoFields() []hpack.HeaderField { - for i, hf := range mh.Fields { - if !hf.IsPseudo() { - return mh.Fields[:i] - } - } - return mh.Fields -} - -func (mh *MetaHeadersFrame) checkPseudos() error { - var isRequest, isResponse bool - pf := mh.PseudoFields() - for i, hf := range pf { - switch hf.Name { - case ":method", ":path", ":scheme", ":authority": - isRequest = true - case ":status": - isResponse = true - default: - return pseudoHeaderError(hf.Name) - } - // Check for duplicates. - // This would be a bad algorithm, but N is 4. - // And this doesn't allocate. - for _, hf2 := range pf[:i] { - if hf.Name == hf2.Name { - return duplicatePseudoHeaderError(hf.Name) - } - } - } - if isRequest && isResponse { - return errMixPseudoHeaderTypes - } - return nil -} - -func (fr *Framer) maxHeaderStringLen() int { - v := fr.maxHeaderListSize() - if uint32(int(v)) == v { - return int(v) - } - // They had a crazy big number for MaxHeaderBytes anyway, - // so give them unlimited header lengths: - return 0 -} - -// readMetaFrame returns 0 or more CONTINUATION frames from fr and -// merge them into into the provided hf and returns a MetaHeadersFrame -// with the decoded hpack values. -func (fr *Framer) readMetaFrame(hf *HeadersFrame) (*MetaHeadersFrame, error) { - if fr.AllowIllegalReads { - return nil, errors.New("illegal use of AllowIllegalReads with ReadMetaHeaders") - } - mh := &MetaHeadersFrame{ - HeadersFrame: hf, - } - var remainSize = fr.maxHeaderListSize() - var sawRegular bool - - var invalid error // pseudo header field errors - hdec := fr.ReadMetaHeaders - hdec.SetEmitEnabled(true) - hdec.SetMaxStringLength(fr.maxHeaderStringLen()) - hdec.SetEmitFunc(func(hf hpack.HeaderField) { - if VerboseLogs && logFrameReads { - log.Printf("http2: decoded hpack field %+v", hf) - } - if !httplex.ValidHeaderFieldValue(hf.Value) { - invalid = headerFieldValueError(hf.Value) - } - isPseudo := strings.HasPrefix(hf.Name, ":") - if isPseudo { - if sawRegular { - invalid = errPseudoAfterRegular - } - } else { - sawRegular = true - if !validWireHeaderFieldName(hf.Name) { - invalid = headerFieldNameError(hf.Name) - } - } - - if invalid != nil { - hdec.SetEmitEnabled(false) - return - } - - size := hf.Size() - if size > remainSize { - hdec.SetEmitEnabled(false) - mh.Truncated = true - return - } - remainSize -= size - - mh.Fields = append(mh.Fields, hf) - }) - // Lose reference to MetaHeadersFrame: - defer hdec.SetEmitFunc(func(hf hpack.HeaderField) {}) - - var hc headersOrContinuation = hf - for { - frag := hc.HeaderBlockFragment() - if _, err := hdec.Write(frag); err != nil { - return nil, ConnectionError(ErrCodeCompression) - } - - if hc.HeadersEnded() { - break - } - if f, err := fr.ReadFrame(); err != nil { - return nil, err - } else { - hc = f.(*ContinuationFrame) // guaranteed by checkFrameOrder - } - } - - mh.HeadersFrame.headerFragBuf = nil - mh.HeadersFrame.invalidate() - - if err := hdec.Close(); err != nil { - return nil, ConnectionError(ErrCodeCompression) - } - if invalid != nil { - fr.errDetail = invalid - if VerboseLogs { - log.Printf("http2: invalid header: %v", invalid) - } - return nil, StreamError{mh.StreamID, ErrCodeProtocol, invalid} - } - if err := mh.checkPseudos(); err != nil { - fr.errDetail = err - if VerboseLogs { - log.Printf("http2: invalid pseudo headers: %v", err) - } - return nil, StreamError{mh.StreamID, ErrCodeProtocol, err} - } - return mh, nil -} - -func summarizeFrame(f Frame) string { - var buf bytes.Buffer - f.Header().writeDebug(&buf) - switch f := f.(type) { - case *SettingsFrame: - n := 0 - f.ForeachSetting(func(s Setting) error { - n++ - if n == 1 { - buf.WriteString(", settings:") - } - fmt.Fprintf(&buf, " %v=%v,", s.ID, s.Val) - return nil - }) - if n > 0 { - buf.Truncate(buf.Len() - 1) // remove trailing comma - } - case *DataFrame: - data := f.Data() - const max = 256 - if len(data) > max { - data = data[:max] - } - fmt.Fprintf(&buf, " data=%q", data) - if len(f.Data()) > max { - fmt.Fprintf(&buf, " (%d bytes omitted)", len(f.Data())-max) - } - case *WindowUpdateFrame: - if f.StreamID == 0 { - buf.WriteString(" (conn)") - } - fmt.Fprintf(&buf, " incr=%v", f.Increment) - case *PingFrame: - fmt.Fprintf(&buf, " ping=%q", f.Data[:]) - case *GoAwayFrame: - fmt.Fprintf(&buf, " LastStreamID=%v ErrCode=%v Debug=%q", - f.LastStreamID, f.ErrCode, f.debugData) - case *RSTStreamFrame: - fmt.Fprintf(&buf, " ErrCode=%v", f.ErrCode) - } - return buf.String() -} diff --git a/vendor/golang.org/x/net/http2/go16.go b/vendor/golang.org/x/net/http2/go16.go deleted file mode 100644 index 2b72855f55..0000000000 --- a/vendor/golang.org/x/net/http2/go16.go +++ /dev/null @@ -1,43 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build go1.6 - -package http2 - -import ( - "crypto/tls" - "net/http" - "time" -) - -func transportExpectContinueTimeout(t1 *http.Transport) time.Duration { - return t1.ExpectContinueTimeout -} - -// isBadCipher reports whether the cipher is blacklisted by the HTTP/2 spec. -func isBadCipher(cipher uint16) bool { - switch cipher { - case tls.TLS_RSA_WITH_RC4_128_SHA, - tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA, - tls.TLS_RSA_WITH_AES_128_CBC_SHA, - tls.TLS_RSA_WITH_AES_256_CBC_SHA, - tls.TLS_RSA_WITH_AES_128_GCM_SHA256, - tls.TLS_RSA_WITH_AES_256_GCM_SHA384, - tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, - tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, - tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, - tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA, - tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, - tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, - tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA: - // Reject cipher suites from Appendix A. - // "This list includes those cipher suites that do not - // offer an ephemeral key exchange and those that are - // based on the TLS null, stream or block cipher type" - return true - default: - return false - } -} diff --git a/vendor/golang.org/x/net/http2/go17.go b/vendor/golang.org/x/net/http2/go17.go deleted file mode 100644 index 730319dd5a..0000000000 --- a/vendor/golang.org/x/net/http2/go17.go +++ /dev/null @@ -1,94 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build go1.7 - -package http2 - -import ( - "context" - "net" - "net/http" - "net/http/httptrace" - "time" -) - -type contextContext interface { - context.Context -} - -func serverConnBaseContext(c net.Conn, opts *ServeConnOpts) (ctx contextContext, cancel func()) { - ctx, cancel = context.WithCancel(context.Background()) - ctx = context.WithValue(ctx, http.LocalAddrContextKey, c.LocalAddr()) - if hs := opts.baseConfig(); hs != nil { - ctx = context.WithValue(ctx, http.ServerContextKey, hs) - } - return -} - -func contextWithCancel(ctx contextContext) (_ contextContext, cancel func()) { - return context.WithCancel(ctx) -} - -func requestWithContext(req *http.Request, ctx contextContext) *http.Request { - return req.WithContext(ctx) -} - -type clientTrace httptrace.ClientTrace - -func reqContext(r *http.Request) context.Context { return r.Context() } - -func setResponseUncompressed(res *http.Response) { res.Uncompressed = true } - -func traceGotConn(req *http.Request, cc *ClientConn) { - trace := httptrace.ContextClientTrace(req.Context()) - if trace == nil || trace.GotConn == nil { - return - } - ci := httptrace.GotConnInfo{Conn: cc.tconn} - cc.mu.Lock() - ci.Reused = cc.nextStreamID > 1 - ci.WasIdle = len(cc.streams) == 0 && ci.Reused - if ci.WasIdle && !cc.lastActive.IsZero() { - ci.IdleTime = time.Now().Sub(cc.lastActive) - } - cc.mu.Unlock() - - trace.GotConn(ci) -} - -func traceWroteHeaders(trace *clientTrace) { - if trace != nil && trace.WroteHeaders != nil { - trace.WroteHeaders() - } -} - -func traceGot100Continue(trace *clientTrace) { - if trace != nil && trace.Got100Continue != nil { - trace.Got100Continue() - } -} - -func traceWait100Continue(trace *clientTrace) { - if trace != nil && trace.Wait100Continue != nil { - trace.Wait100Continue() - } -} - -func traceWroteRequest(trace *clientTrace, err error) { - if trace != nil && trace.WroteRequest != nil { - trace.WroteRequest(httptrace.WroteRequestInfo{Err: err}) - } -} - -func traceFirstResponseByte(trace *clientTrace) { - if trace != nil && trace.GotFirstResponseByte != nil { - trace.GotFirstResponseByte() - } -} - -func requestTrace(req *http.Request) *clientTrace { - trace := httptrace.ContextClientTrace(req.Context()) - return (*clientTrace)(trace) -} diff --git a/vendor/golang.org/x/net/http2/gotrack.go b/vendor/golang.org/x/net/http2/gotrack.go deleted file mode 100644 index 9933c9f8c7..0000000000 --- a/vendor/golang.org/x/net/http2/gotrack.go +++ /dev/null @@ -1,170 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Defensive debug-only utility to track that functions run on the -// goroutine that they're supposed to. - -package http2 - -import ( - "bytes" - "errors" - "fmt" - "os" - "runtime" - "strconv" - "sync" -) - -var DebugGoroutines = os.Getenv("DEBUG_HTTP2_GOROUTINES") == "1" - -type goroutineLock uint64 - -func newGoroutineLock() goroutineLock { - if !DebugGoroutines { - return 0 - } - return goroutineLock(curGoroutineID()) -} - -func (g goroutineLock) check() { - if !DebugGoroutines { - return - } - if curGoroutineID() != uint64(g) { - panic("running on the wrong goroutine") - } -} - -func (g goroutineLock) checkNotOn() { - if !DebugGoroutines { - return - } - if curGoroutineID() == uint64(g) { - panic("running on the wrong goroutine") - } -} - -var goroutineSpace = []byte("goroutine ") - -func curGoroutineID() uint64 { - bp := littleBuf.Get().(*[]byte) - defer littleBuf.Put(bp) - b := *bp - b = b[:runtime.Stack(b, false)] - // Parse the 4707 out of "goroutine 4707 [" - b = bytes.TrimPrefix(b, goroutineSpace) - i := bytes.IndexByte(b, ' ') - if i < 0 { - panic(fmt.Sprintf("No space found in %q", b)) - } - b = b[:i] - n, err := parseUintBytes(b, 10, 64) - if err != nil { - panic(fmt.Sprintf("Failed to parse goroutine ID out of %q: %v", b, err)) - } - return n -} - -var littleBuf = sync.Pool{ - New: func() interface{} { - buf := make([]byte, 64) - return &buf - }, -} - -// parseUintBytes is like strconv.ParseUint, but using a []byte. -func parseUintBytes(s []byte, base int, bitSize int) (n uint64, err error) { - var cutoff, maxVal uint64 - - if bitSize == 0 { - bitSize = int(strconv.IntSize) - } - - s0 := s - switch { - case len(s) < 1: - err = strconv.ErrSyntax - goto Error - - case 2 <= base && base <= 36: - // valid base; nothing to do - - case base == 0: - // Look for octal, hex prefix. - switch { - case s[0] == '0' && len(s) > 1 && (s[1] == 'x' || s[1] == 'X'): - base = 16 - s = s[2:] - if len(s) < 1 { - err = strconv.ErrSyntax - goto Error - } - case s[0] == '0': - base = 8 - default: - base = 10 - } - - default: - err = errors.New("invalid base " + strconv.Itoa(base)) - goto Error - } - - n = 0 - cutoff = cutoff64(base) - maxVal = 1<= base { - n = 0 - err = strconv.ErrSyntax - goto Error - } - - if n >= cutoff { - // n*base overflows - n = 1<<64 - 1 - err = strconv.ErrRange - goto Error - } - n *= uint64(base) - - n1 := n + uint64(v) - if n1 < n || n1 > maxVal { - // n+v overflows - n = 1<<64 - 1 - err = strconv.ErrRange - goto Error - } - n = n1 - } - - return n, nil - -Error: - return n, &strconv.NumError{Func: "ParseUint", Num: string(s0), Err: err} -} - -// Return the first number n such that n*base >= 1<<64. -func cutoff64(base int) uint64 { - if base < 2 { - return 0 - } - return (1<<64-1)/uint64(base) + 1 -} diff --git a/vendor/golang.org/x/net/http2/headermap.go b/vendor/golang.org/x/net/http2/headermap.go deleted file mode 100644 index c2805f6ac4..0000000000 --- a/vendor/golang.org/x/net/http2/headermap.go +++ /dev/null @@ -1,78 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package http2 - -import ( - "net/http" - "strings" -) - -var ( - commonLowerHeader = map[string]string{} // Go-Canonical-Case -> lower-case - commonCanonHeader = map[string]string{} // lower-case -> Go-Canonical-Case -) - -func init() { - for _, v := range []string{ - "accept", - "accept-charset", - "accept-encoding", - "accept-language", - "accept-ranges", - "age", - "access-control-allow-origin", - "allow", - "authorization", - "cache-control", - "content-disposition", - "content-encoding", - "content-language", - "content-length", - "content-location", - "content-range", - "content-type", - "cookie", - "date", - "etag", - "expect", - "expires", - "from", - "host", - "if-match", - "if-modified-since", - "if-none-match", - "if-unmodified-since", - "last-modified", - "link", - "location", - "max-forwards", - "proxy-authenticate", - "proxy-authorization", - "range", - "referer", - "refresh", - "retry-after", - "server", - "set-cookie", - "strict-transport-security", - "trailer", - "transfer-encoding", - "user-agent", - "vary", - "via", - "www-authenticate", - } { - chk := http.CanonicalHeaderKey(v) - commonLowerHeader[chk] = v - commonCanonHeader[v] = chk - } -} - -func lowerHeader(v string) string { - if s, ok := commonLowerHeader[v]; ok { - return s - } - return strings.ToLower(v) -} diff --git a/vendor/golang.org/x/net/http2/hpack/encode.go b/vendor/golang.org/x/net/http2/hpack/encode.go deleted file mode 100644 index f9bb033984..0000000000 --- a/vendor/golang.org/x/net/http2/hpack/encode.go +++ /dev/null @@ -1,251 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package hpack - -import ( - "io" -) - -const ( - uint32Max = ^uint32(0) - initialHeaderTableSize = 4096 -) - -type Encoder struct { - dynTab dynamicTable - // minSize is the minimum table size set by - // SetMaxDynamicTableSize after the previous Header Table Size - // Update. - minSize uint32 - // maxSizeLimit is the maximum table size this encoder - // supports. This will protect the encoder from too large - // size. - maxSizeLimit uint32 - // tableSizeUpdate indicates whether "Header Table Size - // Update" is required. - tableSizeUpdate bool - w io.Writer - buf []byte -} - -// NewEncoder returns a new Encoder which performs HPACK encoding. An -// encoded data is written to w. -func NewEncoder(w io.Writer) *Encoder { - e := &Encoder{ - minSize: uint32Max, - maxSizeLimit: initialHeaderTableSize, - tableSizeUpdate: false, - w: w, - } - e.dynTab.setMaxSize(initialHeaderTableSize) - return e -} - -// WriteField encodes f into a single Write to e's underlying Writer. -// This function may also produce bytes for "Header Table Size Update" -// if necessary. If produced, it is done before encoding f. -func (e *Encoder) WriteField(f HeaderField) error { - e.buf = e.buf[:0] - - if e.tableSizeUpdate { - e.tableSizeUpdate = false - if e.minSize < e.dynTab.maxSize { - e.buf = appendTableSize(e.buf, e.minSize) - } - e.minSize = uint32Max - e.buf = appendTableSize(e.buf, e.dynTab.maxSize) - } - - idx, nameValueMatch := e.searchTable(f) - if nameValueMatch { - e.buf = appendIndexed(e.buf, idx) - } else { - indexing := e.shouldIndex(f) - if indexing { - e.dynTab.add(f) - } - - if idx == 0 { - e.buf = appendNewName(e.buf, f, indexing) - } else { - e.buf = appendIndexedName(e.buf, f, idx, indexing) - } - } - n, err := e.w.Write(e.buf) - if err == nil && n != len(e.buf) { - err = io.ErrShortWrite - } - return err -} - -// searchTable searches f in both stable and dynamic header tables. -// The static header table is searched first. Only when there is no -// exact match for both name and value, the dynamic header table is -// then searched. If there is no match, i is 0. If both name and value -// match, i is the matched index and nameValueMatch becomes true. If -// only name matches, i points to that index and nameValueMatch -// becomes false. -func (e *Encoder) searchTable(f HeaderField) (i uint64, nameValueMatch bool) { - for idx, hf := range staticTable { - if !constantTimeStringCompare(hf.Name, f.Name) { - continue - } - if i == 0 { - i = uint64(idx + 1) - } - if f.Sensitive { - continue - } - if !constantTimeStringCompare(hf.Value, f.Value) { - continue - } - i = uint64(idx + 1) - nameValueMatch = true - return - } - - j, nameValueMatch := e.dynTab.search(f) - if nameValueMatch || (i == 0 && j != 0) { - i = j + uint64(len(staticTable)) - } - return -} - -// SetMaxDynamicTableSize changes the dynamic header table size to v. -// The actual size is bounded by the value passed to -// SetMaxDynamicTableSizeLimit. -func (e *Encoder) SetMaxDynamicTableSize(v uint32) { - if v > e.maxSizeLimit { - v = e.maxSizeLimit - } - if v < e.minSize { - e.minSize = v - } - e.tableSizeUpdate = true - e.dynTab.setMaxSize(v) -} - -// SetMaxDynamicTableSizeLimit changes the maximum value that can be -// specified in SetMaxDynamicTableSize to v. By default, it is set to -// 4096, which is the same size of the default dynamic header table -// size described in HPACK specification. If the current maximum -// dynamic header table size is strictly greater than v, "Header Table -// Size Update" will be done in the next WriteField call and the -// maximum dynamic header table size is truncated to v. -func (e *Encoder) SetMaxDynamicTableSizeLimit(v uint32) { - e.maxSizeLimit = v - if e.dynTab.maxSize > v { - e.tableSizeUpdate = true - e.dynTab.setMaxSize(v) - } -} - -// shouldIndex reports whether f should be indexed. -func (e *Encoder) shouldIndex(f HeaderField) bool { - return !f.Sensitive && f.Size() <= e.dynTab.maxSize -} - -// appendIndexed appends index i, as encoded in "Indexed Header Field" -// representation, to dst and returns the extended buffer. -func appendIndexed(dst []byte, i uint64) []byte { - first := len(dst) - dst = appendVarInt(dst, 7, i) - dst[first] |= 0x80 - return dst -} - -// appendNewName appends f, as encoded in one of "Literal Header field -// - New Name" representation variants, to dst and returns the -// extended buffer. -// -// If f.Sensitive is true, "Never Indexed" representation is used. If -// f.Sensitive is false and indexing is true, "Inremental Indexing" -// representation is used. -func appendNewName(dst []byte, f HeaderField, indexing bool) []byte { - dst = append(dst, encodeTypeByte(indexing, f.Sensitive)) - dst = appendHpackString(dst, f.Name) - return appendHpackString(dst, f.Value) -} - -// appendIndexedName appends f and index i referring indexed name -// entry, as encoded in one of "Literal Header field - Indexed Name" -// representation variants, to dst and returns the extended buffer. -// -// If f.Sensitive is true, "Never Indexed" representation is used. If -// f.Sensitive is false and indexing is true, "Incremental Indexing" -// representation is used. -func appendIndexedName(dst []byte, f HeaderField, i uint64, indexing bool) []byte { - first := len(dst) - var n byte - if indexing { - n = 6 - } else { - n = 4 - } - dst = appendVarInt(dst, n, i) - dst[first] |= encodeTypeByte(indexing, f.Sensitive) - return appendHpackString(dst, f.Value) -} - -// appendTableSize appends v, as encoded in "Header Table Size Update" -// representation, to dst and returns the extended buffer. -func appendTableSize(dst []byte, v uint32) []byte { - first := len(dst) - dst = appendVarInt(dst, 5, uint64(v)) - dst[first] |= 0x20 - return dst -} - -// appendVarInt appends i, as encoded in variable integer form using n -// bit prefix, to dst and returns the extended buffer. -// -// See -// http://http2.github.io/http2-spec/compression.html#integer.representation -func appendVarInt(dst []byte, n byte, i uint64) []byte { - k := uint64((1 << n) - 1) - if i < k { - return append(dst, byte(i)) - } - dst = append(dst, byte(k)) - i -= k - for ; i >= 128; i >>= 7 { - dst = append(dst, byte(0x80|(i&0x7f))) - } - return append(dst, byte(i)) -} - -// appendHpackString appends s, as encoded in "String Literal" -// representation, to dst and returns the the extended buffer. -// -// s will be encoded in Huffman codes only when it produces strictly -// shorter byte string. -func appendHpackString(dst []byte, s string) []byte { - huffmanLength := HuffmanEncodeLength(s) - if huffmanLength < uint64(len(s)) { - first := len(dst) - dst = appendVarInt(dst, 7, huffmanLength) - dst = AppendHuffmanString(dst, s) - dst[first] |= 0x80 - } else { - dst = appendVarInt(dst, 7, uint64(len(s))) - dst = append(dst, s...) - } - return dst -} - -// encodeTypeByte returns type byte. If sensitive is true, type byte -// for "Never Indexed" representation is returned. If sensitive is -// false and indexing is true, type byte for "Incremental Indexing" -// representation is returned. Otherwise, type byte for "Without -// Indexing" is returned. -func encodeTypeByte(indexing, sensitive bool) byte { - if sensitive { - return 0x10 - } - if indexing { - return 0x40 - } - return 0 -} diff --git a/vendor/golang.org/x/net/http2/hpack/hpack.go b/vendor/golang.org/x/net/http2/hpack/hpack.go deleted file mode 100644 index 8aa197ad67..0000000000 --- a/vendor/golang.org/x/net/http2/hpack/hpack.go +++ /dev/null @@ -1,542 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package hpack implements HPACK, a compression format for -// efficiently representing HTTP header fields in the context of HTTP/2. -// -// See http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-09 -package hpack - -import ( - "bytes" - "errors" - "fmt" -) - -// A DecodingError is something the spec defines as a decoding error. -type DecodingError struct { - Err error -} - -func (de DecodingError) Error() string { - return fmt.Sprintf("decoding error: %v", de.Err) -} - -// An InvalidIndexError is returned when an encoder references a table -// entry before the static table or after the end of the dynamic table. -type InvalidIndexError int - -func (e InvalidIndexError) Error() string { - return fmt.Sprintf("invalid indexed representation index %d", int(e)) -} - -// A HeaderField is a name-value pair. Both the name and value are -// treated as opaque sequences of octets. -type HeaderField struct { - Name, Value string - - // Sensitive means that this header field should never be - // indexed. - Sensitive bool -} - -// IsPseudo reports whether the header field is an http2 pseudo header. -// That is, it reports whether it starts with a colon. -// It is not otherwise guaranteed to be a valid pseudo header field, -// though. -func (hf HeaderField) IsPseudo() bool { - return len(hf.Name) != 0 && hf.Name[0] == ':' -} - -func (hf HeaderField) String() string { - var suffix string - if hf.Sensitive { - suffix = " (sensitive)" - } - return fmt.Sprintf("header field %q = %q%s", hf.Name, hf.Value, suffix) -} - -// Size returns the size of an entry per RFC 7540 section 5.2. -func (hf HeaderField) Size() uint32 { - // http://http2.github.io/http2-spec/compression.html#rfc.section.4.1 - // "The size of the dynamic table is the sum of the size of - // its entries. The size of an entry is the sum of its name's - // length in octets (as defined in Section 5.2), its value's - // length in octets (see Section 5.2), plus 32. The size of - // an entry is calculated using the length of the name and - // value without any Huffman encoding applied." - - // This can overflow if somebody makes a large HeaderField - // Name and/or Value by hand, but we don't care, because that - // won't happen on the wire because the encoding doesn't allow - // it. - return uint32(len(hf.Name) + len(hf.Value) + 32) -} - -// A Decoder is the decoding context for incremental processing of -// header blocks. -type Decoder struct { - dynTab dynamicTable - emit func(f HeaderField) - - emitEnabled bool // whether calls to emit are enabled - maxStrLen int // 0 means unlimited - - // buf is the unparsed buffer. It's only written to - // saveBuf if it was truncated in the middle of a header - // block. Because it's usually not owned, we can only - // process it under Write. - buf []byte // not owned; only valid during Write - - // saveBuf is previous data passed to Write which we weren't able - // to fully parse before. Unlike buf, we own this data. - saveBuf bytes.Buffer -} - -// NewDecoder returns a new decoder with the provided maximum dynamic -// table size. The emitFunc will be called for each valid field -// parsed, in the same goroutine as calls to Write, before Write returns. -func NewDecoder(maxDynamicTableSize uint32, emitFunc func(f HeaderField)) *Decoder { - d := &Decoder{ - emit: emitFunc, - emitEnabled: true, - } - d.dynTab.allowedMaxSize = maxDynamicTableSize - d.dynTab.setMaxSize(maxDynamicTableSize) - return d -} - -// ErrStringLength is returned by Decoder.Write when the max string length -// (as configured by Decoder.SetMaxStringLength) would be violated. -var ErrStringLength = errors.New("hpack: string too long") - -// SetMaxStringLength sets the maximum size of a HeaderField name or -// value string. If a string exceeds this length (even after any -// decompression), Write will return ErrStringLength. -// A value of 0 means unlimited and is the default from NewDecoder. -func (d *Decoder) SetMaxStringLength(n int) { - d.maxStrLen = n -} - -// SetEmitFunc changes the callback used when new header fields -// are decoded. -// It must be non-nil. It does not affect EmitEnabled. -func (d *Decoder) SetEmitFunc(emitFunc func(f HeaderField)) { - d.emit = emitFunc -} - -// SetEmitEnabled controls whether the emitFunc provided to NewDecoder -// should be called. The default is true. -// -// This facility exists to let servers enforce MAX_HEADER_LIST_SIZE -// while still decoding and keeping in-sync with decoder state, but -// without doing unnecessary decompression or generating unnecessary -// garbage for header fields past the limit. -func (d *Decoder) SetEmitEnabled(v bool) { d.emitEnabled = v } - -// EmitEnabled reports whether calls to the emitFunc provided to NewDecoder -// are currently enabled. The default is true. -func (d *Decoder) EmitEnabled() bool { return d.emitEnabled } - -// TODO: add method *Decoder.Reset(maxSize, emitFunc) to let callers re-use Decoders and their -// underlying buffers for garbage reasons. - -func (d *Decoder) SetMaxDynamicTableSize(v uint32) { - d.dynTab.setMaxSize(v) -} - -// SetAllowedMaxDynamicTableSize sets the upper bound that the encoded -// stream (via dynamic table size updates) may set the maximum size -// to. -func (d *Decoder) SetAllowedMaxDynamicTableSize(v uint32) { - d.dynTab.allowedMaxSize = v -} - -type dynamicTable struct { - // ents is the FIFO described at - // http://http2.github.io/http2-spec/compression.html#rfc.section.2.3.2 - // The newest (low index) is append at the end, and items are - // evicted from the front. - ents []HeaderField - size uint32 - maxSize uint32 // current maxSize - allowedMaxSize uint32 // maxSize may go up to this, inclusive -} - -func (dt *dynamicTable) setMaxSize(v uint32) { - dt.maxSize = v - dt.evict() -} - -// TODO: change dynamicTable to be a struct with a slice and a size int field, -// per http://http2.github.io/http2-spec/compression.html#rfc.section.4.1: -// -// -// Then make add increment the size. maybe the max size should move from Decoder to -// dynamicTable and add should return an ok bool if there was enough space. -// -// Later we'll need a remove operation on dynamicTable. - -func (dt *dynamicTable) add(f HeaderField) { - dt.ents = append(dt.ents, f) - dt.size += f.Size() - dt.evict() -} - -// If we're too big, evict old stuff (front of the slice) -func (dt *dynamicTable) evict() { - base := dt.ents // keep base pointer of slice - for dt.size > dt.maxSize { - dt.size -= dt.ents[0].Size() - dt.ents = dt.ents[1:] - } - - // Shift slice contents down if we evicted things. - if len(dt.ents) != len(base) { - copy(base, dt.ents) - dt.ents = base[:len(dt.ents)] - } -} - -// constantTimeStringCompare compares string a and b in a constant -// time manner. -func constantTimeStringCompare(a, b string) bool { - if len(a) != len(b) { - return false - } - - c := byte(0) - - for i := 0; i < len(a); i++ { - c |= a[i] ^ b[i] - } - - return c == 0 -} - -// Search searches f in the table. The return value i is 0 if there is -// no name match. If there is name match or name/value match, i is the -// index of that entry (1-based). If both name and value match, -// nameValueMatch becomes true. -func (dt *dynamicTable) search(f HeaderField) (i uint64, nameValueMatch bool) { - l := len(dt.ents) - for j := l - 1; j >= 0; j-- { - ent := dt.ents[j] - if !constantTimeStringCompare(ent.Name, f.Name) { - continue - } - if i == 0 { - i = uint64(l - j) - } - if f.Sensitive { - continue - } - if !constantTimeStringCompare(ent.Value, f.Value) { - continue - } - i = uint64(l - j) - nameValueMatch = true - return - } - return -} - -func (d *Decoder) maxTableIndex() int { - return len(d.dynTab.ents) + len(staticTable) -} - -func (d *Decoder) at(i uint64) (hf HeaderField, ok bool) { - if i < 1 { - return - } - if i > uint64(d.maxTableIndex()) { - return - } - if i <= uint64(len(staticTable)) { - return staticTable[i-1], true - } - dents := d.dynTab.ents - return dents[len(dents)-(int(i)-len(staticTable))], true -} - -// Decode decodes an entire block. -// -// TODO: remove this method and make it incremental later? This is -// easier for debugging now. -func (d *Decoder) DecodeFull(p []byte) ([]HeaderField, error) { - var hf []HeaderField - saveFunc := d.emit - defer func() { d.emit = saveFunc }() - d.emit = func(f HeaderField) { hf = append(hf, f) } - if _, err := d.Write(p); err != nil { - return nil, err - } - if err := d.Close(); err != nil { - return nil, err - } - return hf, nil -} - -func (d *Decoder) Close() error { - if d.saveBuf.Len() > 0 { - d.saveBuf.Reset() - return DecodingError{errors.New("truncated headers")} - } - return nil -} - -func (d *Decoder) Write(p []byte) (n int, err error) { - if len(p) == 0 { - // Prevent state machine CPU attacks (making us redo - // work up to the point of finding out we don't have - // enough data) - return - } - // Only copy the data if we have to. Optimistically assume - // that p will contain a complete header block. - if d.saveBuf.Len() == 0 { - d.buf = p - } else { - d.saveBuf.Write(p) - d.buf = d.saveBuf.Bytes() - d.saveBuf.Reset() - } - - for len(d.buf) > 0 { - err = d.parseHeaderFieldRepr() - if err == errNeedMore { - // Extra paranoia, making sure saveBuf won't - // get too large. All the varint and string - // reading code earlier should already catch - // overlong things and return ErrStringLength, - // but keep this as a last resort. - const varIntOverhead = 8 // conservative - if d.maxStrLen != 0 && int64(len(d.buf)) > 2*(int64(d.maxStrLen)+varIntOverhead) { - return 0, ErrStringLength - } - d.saveBuf.Write(d.buf) - return len(p), nil - } - if err != nil { - break - } - } - return len(p), err -} - -// errNeedMore is an internal sentinel error value that means the -// buffer is truncated and we need to read more data before we can -// continue parsing. -var errNeedMore = errors.New("need more data") - -type indexType int - -const ( - indexedTrue indexType = iota - indexedFalse - indexedNever -) - -func (v indexType) indexed() bool { return v == indexedTrue } -func (v indexType) sensitive() bool { return v == indexedNever } - -// returns errNeedMore if there isn't enough data available. -// any other error is fatal. -// consumes d.buf iff it returns nil. -// precondition: must be called with len(d.buf) > 0 -func (d *Decoder) parseHeaderFieldRepr() error { - b := d.buf[0] - switch { - case b&128 != 0: - // Indexed representation. - // High bit set? - // http://http2.github.io/http2-spec/compression.html#rfc.section.6.1 - return d.parseFieldIndexed() - case b&192 == 64: - // 6.2.1 Literal Header Field with Incremental Indexing - // 0b10xxxxxx: top two bits are 10 - // http://http2.github.io/http2-spec/compression.html#rfc.section.6.2.1 - return d.parseFieldLiteral(6, indexedTrue) - case b&240 == 0: - // 6.2.2 Literal Header Field without Indexing - // 0b0000xxxx: top four bits are 0000 - // http://http2.github.io/http2-spec/compression.html#rfc.section.6.2.2 - return d.parseFieldLiteral(4, indexedFalse) - case b&240 == 16: - // 6.2.3 Literal Header Field never Indexed - // 0b0001xxxx: top four bits are 0001 - // http://http2.github.io/http2-spec/compression.html#rfc.section.6.2.3 - return d.parseFieldLiteral(4, indexedNever) - case b&224 == 32: - // 6.3 Dynamic Table Size Update - // Top three bits are '001'. - // http://http2.github.io/http2-spec/compression.html#rfc.section.6.3 - return d.parseDynamicTableSizeUpdate() - } - - return DecodingError{errors.New("invalid encoding")} -} - -// (same invariants and behavior as parseHeaderFieldRepr) -func (d *Decoder) parseFieldIndexed() error { - buf := d.buf - idx, buf, err := readVarInt(7, buf) - if err != nil { - return err - } - hf, ok := d.at(idx) - if !ok { - return DecodingError{InvalidIndexError(idx)} - } - d.buf = buf - return d.callEmit(HeaderField{Name: hf.Name, Value: hf.Value}) -} - -// (same invariants and behavior as parseHeaderFieldRepr) -func (d *Decoder) parseFieldLiteral(n uint8, it indexType) error { - buf := d.buf - nameIdx, buf, err := readVarInt(n, buf) - if err != nil { - return err - } - - var hf HeaderField - wantStr := d.emitEnabled || it.indexed() - if nameIdx > 0 { - ihf, ok := d.at(nameIdx) - if !ok { - return DecodingError{InvalidIndexError(nameIdx)} - } - hf.Name = ihf.Name - } else { - hf.Name, buf, err = d.readString(buf, wantStr) - if err != nil { - return err - } - } - hf.Value, buf, err = d.readString(buf, wantStr) - if err != nil { - return err - } - d.buf = buf - if it.indexed() { - d.dynTab.add(hf) - } - hf.Sensitive = it.sensitive() - return d.callEmit(hf) -} - -func (d *Decoder) callEmit(hf HeaderField) error { - if d.maxStrLen != 0 { - if len(hf.Name) > d.maxStrLen || len(hf.Value) > d.maxStrLen { - return ErrStringLength - } - } - if d.emitEnabled { - d.emit(hf) - } - return nil -} - -// (same invariants and behavior as parseHeaderFieldRepr) -func (d *Decoder) parseDynamicTableSizeUpdate() error { - buf := d.buf - size, buf, err := readVarInt(5, buf) - if err != nil { - return err - } - if size > uint64(d.dynTab.allowedMaxSize) { - return DecodingError{errors.New("dynamic table size update too large")} - } - d.dynTab.setMaxSize(uint32(size)) - d.buf = buf - return nil -} - -var errVarintOverflow = DecodingError{errors.New("varint integer overflow")} - -// readVarInt reads an unsigned variable length integer off the -// beginning of p. n is the parameter as described in -// http://http2.github.io/http2-spec/compression.html#rfc.section.5.1. -// -// n must always be between 1 and 8. -// -// The returned remain buffer is either a smaller suffix of p, or err != nil. -// The error is errNeedMore if p doesn't contain a complete integer. -func readVarInt(n byte, p []byte) (i uint64, remain []byte, err error) { - if n < 1 || n > 8 { - panic("bad n") - } - if len(p) == 0 { - return 0, p, errNeedMore - } - i = uint64(p[0]) - if n < 8 { - i &= (1 << uint64(n)) - 1 - } - if i < (1< 0 { - b := p[0] - p = p[1:] - i += uint64(b&127) << m - if b&128 == 0 { - return i, p, nil - } - m += 7 - if m >= 63 { // TODO: proper overflow check. making this up. - return 0, origP, errVarintOverflow - } - } - return 0, origP, errNeedMore -} - -// readString decodes an hpack string from p. -// -// wantStr is whether s will be used. If false, decompression and -// []byte->string garbage are skipped if s will be ignored -// anyway. This does mean that huffman decoding errors for non-indexed -// strings past the MAX_HEADER_LIST_SIZE are ignored, but the server -// is returning an error anyway, and because they're not indexed, the error -// won't affect the decoding state. -func (d *Decoder) readString(p []byte, wantStr bool) (s string, remain []byte, err error) { - if len(p) == 0 { - return "", p, errNeedMore - } - isHuff := p[0]&128 != 0 - strLen, p, err := readVarInt(7, p) - if err != nil { - return "", p, err - } - if d.maxStrLen != 0 && strLen > uint64(d.maxStrLen) { - return "", nil, ErrStringLength - } - if uint64(len(p)) < strLen { - return "", p, errNeedMore - } - if !isHuff { - if wantStr { - s = string(p[:strLen]) - } - return s, p[strLen:], nil - } - - if wantStr { - buf := bufPool.Get().(*bytes.Buffer) - buf.Reset() // don't trust others - defer bufPool.Put(buf) - if err := huffmanDecode(buf, d.maxStrLen, p[:strLen]); err != nil { - buf.Reset() - return "", nil, err - } - s = buf.String() - buf.Reset() // be nice to GC - } - return s, p[strLen:], nil -} diff --git a/vendor/golang.org/x/net/http2/hpack/huffman.go b/vendor/golang.org/x/net/http2/hpack/huffman.go deleted file mode 100644 index 8850e39467..0000000000 --- a/vendor/golang.org/x/net/http2/hpack/huffman.go +++ /dev/null @@ -1,212 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package hpack - -import ( - "bytes" - "errors" - "io" - "sync" -) - -var bufPool = sync.Pool{ - New: func() interface{} { return new(bytes.Buffer) }, -} - -// HuffmanDecode decodes the string in v and writes the expanded -// result to w, returning the number of bytes written to w and the -// Write call's return value. At most one Write call is made. -func HuffmanDecode(w io.Writer, v []byte) (int, error) { - buf := bufPool.Get().(*bytes.Buffer) - buf.Reset() - defer bufPool.Put(buf) - if err := huffmanDecode(buf, 0, v); err != nil { - return 0, err - } - return w.Write(buf.Bytes()) -} - -// HuffmanDecodeToString decodes the string in v. -func HuffmanDecodeToString(v []byte) (string, error) { - buf := bufPool.Get().(*bytes.Buffer) - buf.Reset() - defer bufPool.Put(buf) - if err := huffmanDecode(buf, 0, v); err != nil { - return "", err - } - return buf.String(), nil -} - -// ErrInvalidHuffman is returned for errors found decoding -// Huffman-encoded strings. -var ErrInvalidHuffman = errors.New("hpack: invalid Huffman-encoded data") - -// huffmanDecode decodes v to buf. -// If maxLen is greater than 0, attempts to write more to buf than -// maxLen bytes will return ErrStringLength. -func huffmanDecode(buf *bytes.Buffer, maxLen int, v []byte) error { - n := rootHuffmanNode - // cur is the bit buffer that has not been fed into n. - // cbits is the number of low order bits in cur that are valid. - // sbits is the number of bits of the symbol prefix being decoded. - cur, cbits, sbits := uint(0), uint8(0), uint8(0) - for _, b := range v { - cur = cur<<8 | uint(b) - cbits += 8 - sbits += 8 - for cbits >= 8 { - idx := byte(cur >> (cbits - 8)) - n = n.children[idx] - if n == nil { - return ErrInvalidHuffman - } - if n.children == nil { - if maxLen != 0 && buf.Len() == maxLen { - return ErrStringLength - } - buf.WriteByte(n.sym) - cbits -= n.codeLen - n = rootHuffmanNode - sbits = cbits - } else { - cbits -= 8 - } - } - } - for cbits > 0 { - n = n.children[byte(cur<<(8-cbits))] - if n == nil { - return ErrInvalidHuffman - } - if n.children != nil || n.codeLen > cbits { - break - } - if maxLen != 0 && buf.Len() == maxLen { - return ErrStringLength - } - buf.WriteByte(n.sym) - cbits -= n.codeLen - n = rootHuffmanNode - sbits = cbits - } - if sbits > 7 { - // Either there was an incomplete symbol, or overlong padding. - // Both are decoding errors per RFC 7541 section 5.2. - return ErrInvalidHuffman - } - if mask := uint(1< 8 { - codeLen -= 8 - i := uint8(code >> codeLen) - if cur.children[i] == nil { - cur.children[i] = newInternalNode() - } - cur = cur.children[i] - } - shift := 8 - codeLen - start, end := int(uint8(code<> (nbits - rembits)) - dst[len(dst)-1] |= t - } - - return dst -} - -// HuffmanEncodeLength returns the number of bytes required to encode -// s in Huffman codes. The result is round up to byte boundary. -func HuffmanEncodeLength(s string) uint64 { - n := uint64(0) - for i := 0; i < len(s); i++ { - n += uint64(huffmanCodeLen[s[i]]) - } - return (n + 7) / 8 -} - -// appendByteToHuffmanCode appends Huffman code for c to dst and -// returns the extended buffer and the remaining bits in the last -// element. The appending is not byte aligned and the remaining bits -// in the last element of dst is given in rembits. -func appendByteToHuffmanCode(dst []byte, rembits uint8, c byte) ([]byte, uint8) { - code := huffmanCodes[c] - nbits := huffmanCodeLen[c] - - for { - if rembits > nbits { - t := uint8(code << (rembits - nbits)) - dst[len(dst)-1] |= t - rembits -= nbits - break - } - - t := uint8(code >> (nbits - rembits)) - dst[len(dst)-1] |= t - - nbits -= rembits - rembits = 8 - - if nbits == 0 { - break - } - - dst = append(dst, 0) - } - - return dst, rembits -} diff --git a/vendor/golang.org/x/net/http2/hpack/tables.go b/vendor/golang.org/x/net/http2/hpack/tables.go deleted file mode 100644 index b9283a0233..0000000000 --- a/vendor/golang.org/x/net/http2/hpack/tables.go +++ /dev/null @@ -1,352 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package hpack - -func pair(name, value string) HeaderField { - return HeaderField{Name: name, Value: value} -} - -// http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-07#appendix-B -var staticTable = [...]HeaderField{ - pair(":authority", ""), // index 1 (1-based) - pair(":method", "GET"), - pair(":method", "POST"), - pair(":path", "/"), - pair(":path", "/index.html"), - pair(":scheme", "http"), - pair(":scheme", "https"), - pair(":status", "200"), - pair(":status", "204"), - pair(":status", "206"), - pair(":status", "304"), - pair(":status", "400"), - pair(":status", "404"), - pair(":status", "500"), - pair("accept-charset", ""), - pair("accept-encoding", "gzip, deflate"), - pair("accept-language", ""), - pair("accept-ranges", ""), - pair("accept", ""), - pair("access-control-allow-origin", ""), - pair("age", ""), - pair("allow", ""), - pair("authorization", ""), - pair("cache-control", ""), - pair("content-disposition", ""), - pair("content-encoding", ""), - pair("content-language", ""), - pair("content-length", ""), - pair("content-location", ""), - pair("content-range", ""), - pair("content-type", ""), - pair("cookie", ""), - pair("date", ""), - pair("etag", ""), - pair("expect", ""), - pair("expires", ""), - pair("from", ""), - pair("host", ""), - pair("if-match", ""), - pair("if-modified-since", ""), - pair("if-none-match", ""), - pair("if-range", ""), - pair("if-unmodified-since", ""), - pair("last-modified", ""), - pair("link", ""), - pair("location", ""), - pair("max-forwards", ""), - pair("proxy-authenticate", ""), - pair("proxy-authorization", ""), - pair("range", ""), - pair("referer", ""), - pair("refresh", ""), - pair("retry-after", ""), - pair("server", ""), - pair("set-cookie", ""), - pair("strict-transport-security", ""), - pair("transfer-encoding", ""), - pair("user-agent", ""), - pair("vary", ""), - pair("via", ""), - pair("www-authenticate", ""), -} - -var huffmanCodes = [256]uint32{ - 0x1ff8, - 0x7fffd8, - 0xfffffe2, - 0xfffffe3, - 0xfffffe4, - 0xfffffe5, - 0xfffffe6, - 0xfffffe7, - 0xfffffe8, - 0xffffea, - 0x3ffffffc, - 0xfffffe9, - 0xfffffea, - 0x3ffffffd, - 0xfffffeb, - 0xfffffec, - 0xfffffed, - 0xfffffee, - 0xfffffef, - 0xffffff0, - 0xffffff1, - 0xffffff2, - 0x3ffffffe, - 0xffffff3, - 0xffffff4, - 0xffffff5, - 0xffffff6, - 0xffffff7, - 0xffffff8, - 0xffffff9, - 0xffffffa, - 0xffffffb, - 0x14, - 0x3f8, - 0x3f9, - 0xffa, - 0x1ff9, - 0x15, - 0xf8, - 0x7fa, - 0x3fa, - 0x3fb, - 0xf9, - 0x7fb, - 0xfa, - 0x16, - 0x17, - 0x18, - 0x0, - 0x1, - 0x2, - 0x19, - 0x1a, - 0x1b, - 0x1c, - 0x1d, - 0x1e, - 0x1f, - 0x5c, - 0xfb, - 0x7ffc, - 0x20, - 0xffb, - 0x3fc, - 0x1ffa, - 0x21, - 0x5d, - 0x5e, - 0x5f, - 0x60, - 0x61, - 0x62, - 0x63, - 0x64, - 0x65, - 0x66, - 0x67, - 0x68, - 0x69, - 0x6a, - 0x6b, - 0x6c, - 0x6d, - 0x6e, - 0x6f, - 0x70, - 0x71, - 0x72, - 0xfc, - 0x73, - 0xfd, - 0x1ffb, - 0x7fff0, - 0x1ffc, - 0x3ffc, - 0x22, - 0x7ffd, - 0x3, - 0x23, - 0x4, - 0x24, - 0x5, - 0x25, - 0x26, - 0x27, - 0x6, - 0x74, - 0x75, - 0x28, - 0x29, - 0x2a, - 0x7, - 0x2b, - 0x76, - 0x2c, - 0x8, - 0x9, - 0x2d, - 0x77, - 0x78, - 0x79, - 0x7a, - 0x7b, - 0x7ffe, - 0x7fc, - 0x3ffd, - 0x1ffd, - 0xffffffc, - 0xfffe6, - 0x3fffd2, - 0xfffe7, - 0xfffe8, - 0x3fffd3, - 0x3fffd4, - 0x3fffd5, - 0x7fffd9, - 0x3fffd6, - 0x7fffda, - 0x7fffdb, - 0x7fffdc, - 0x7fffdd, - 0x7fffde, - 0xffffeb, - 0x7fffdf, - 0xffffec, - 0xffffed, - 0x3fffd7, - 0x7fffe0, - 0xffffee, - 0x7fffe1, - 0x7fffe2, - 0x7fffe3, - 0x7fffe4, - 0x1fffdc, - 0x3fffd8, - 0x7fffe5, - 0x3fffd9, - 0x7fffe6, - 0x7fffe7, - 0xffffef, - 0x3fffda, - 0x1fffdd, - 0xfffe9, - 0x3fffdb, - 0x3fffdc, - 0x7fffe8, - 0x7fffe9, - 0x1fffde, - 0x7fffea, - 0x3fffdd, - 0x3fffde, - 0xfffff0, - 0x1fffdf, - 0x3fffdf, - 0x7fffeb, - 0x7fffec, - 0x1fffe0, - 0x1fffe1, - 0x3fffe0, - 0x1fffe2, - 0x7fffed, - 0x3fffe1, - 0x7fffee, - 0x7fffef, - 0xfffea, - 0x3fffe2, - 0x3fffe3, - 0x3fffe4, - 0x7ffff0, - 0x3fffe5, - 0x3fffe6, - 0x7ffff1, - 0x3ffffe0, - 0x3ffffe1, - 0xfffeb, - 0x7fff1, - 0x3fffe7, - 0x7ffff2, - 0x3fffe8, - 0x1ffffec, - 0x3ffffe2, - 0x3ffffe3, - 0x3ffffe4, - 0x7ffffde, - 0x7ffffdf, - 0x3ffffe5, - 0xfffff1, - 0x1ffffed, - 0x7fff2, - 0x1fffe3, - 0x3ffffe6, - 0x7ffffe0, - 0x7ffffe1, - 0x3ffffe7, - 0x7ffffe2, - 0xfffff2, - 0x1fffe4, - 0x1fffe5, - 0x3ffffe8, - 0x3ffffe9, - 0xffffffd, - 0x7ffffe3, - 0x7ffffe4, - 0x7ffffe5, - 0xfffec, - 0xfffff3, - 0xfffed, - 0x1fffe6, - 0x3fffe9, - 0x1fffe7, - 0x1fffe8, - 0x7ffff3, - 0x3fffea, - 0x3fffeb, - 0x1ffffee, - 0x1ffffef, - 0xfffff4, - 0xfffff5, - 0x3ffffea, - 0x7ffff4, - 0x3ffffeb, - 0x7ffffe6, - 0x3ffffec, - 0x3ffffed, - 0x7ffffe7, - 0x7ffffe8, - 0x7ffffe9, - 0x7ffffea, - 0x7ffffeb, - 0xffffffe, - 0x7ffffec, - 0x7ffffed, - 0x7ffffee, - 0x7ffffef, - 0x7fffff0, - 0x3ffffee, -} - -var huffmanCodeLen = [256]uint8{ - 13, 23, 28, 28, 28, 28, 28, 28, 28, 24, 30, 28, 28, 30, 28, 28, - 28, 28, 28, 28, 28, 28, 30, 28, 28, 28, 28, 28, 28, 28, 28, 28, - 6, 10, 10, 12, 13, 6, 8, 11, 10, 10, 8, 11, 8, 6, 6, 6, - 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 8, 15, 6, 12, 10, - 13, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 8, 7, 8, 13, 19, 13, 14, 6, - 15, 5, 6, 5, 6, 5, 6, 6, 6, 5, 7, 7, 6, 6, 6, 5, - 6, 7, 6, 5, 5, 6, 7, 7, 7, 7, 7, 15, 11, 14, 13, 28, - 20, 22, 20, 20, 22, 22, 22, 23, 22, 23, 23, 23, 23, 23, 24, 23, - 24, 24, 22, 23, 24, 23, 23, 23, 23, 21, 22, 23, 22, 23, 23, 24, - 22, 21, 20, 22, 22, 23, 23, 21, 23, 22, 22, 24, 21, 22, 23, 23, - 21, 21, 22, 21, 23, 22, 23, 23, 20, 22, 22, 22, 23, 22, 22, 23, - 26, 26, 20, 19, 22, 23, 22, 25, 26, 26, 26, 27, 27, 26, 24, 25, - 19, 21, 26, 27, 27, 26, 27, 24, 21, 21, 26, 26, 28, 27, 27, 27, - 20, 24, 20, 21, 22, 21, 21, 23, 22, 22, 25, 25, 24, 24, 26, 23, - 26, 27, 26, 26, 27, 27, 27, 27, 27, 28, 27, 27, 27, 27, 27, 26, -} diff --git a/vendor/golang.org/x/net/http2/http2.go b/vendor/golang.org/x/net/http2/http2.go deleted file mode 100644 index 401923bc7c..0000000000 --- a/vendor/golang.org/x/net/http2/http2.go +++ /dev/null @@ -1,362 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package http2 implements the HTTP/2 protocol. -// -// This package is low-level and intended to be used directly by very -// few people. Most users will use it indirectly through the automatic -// use by the net/http package (from Go 1.6 and later). -// For use in earlier Go versions see ConfigureServer. (Transport support -// requires Go 1.6 or later) -// -// See https://http2.github.io/ for more information on HTTP/2. -// -// See https://http2.golang.org/ for a test server running this code. -// -package http2 // import "golang.org/x/net/http2" - -import ( - "bufio" - "crypto/tls" - "errors" - "fmt" - "io" - "net/http" - "os" - "sort" - "strconv" - "strings" - "sync" - - "golang.org/x/net/lex/httplex" -) - -var ( - VerboseLogs bool - logFrameWrites bool - logFrameReads bool -) - -func init() { - e := os.Getenv("GODEBUG") - if strings.Contains(e, "http2debug=1") { - VerboseLogs = true - } - if strings.Contains(e, "http2debug=2") { - VerboseLogs = true - logFrameWrites = true - logFrameReads = true - } -} - -const ( - // ClientPreface is the string that must be sent by new - // connections from clients. - ClientPreface = "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" - - // SETTINGS_MAX_FRAME_SIZE default - // http://http2.github.io/http2-spec/#rfc.section.6.5.2 - initialMaxFrameSize = 16384 - - // NextProtoTLS is the NPN/ALPN protocol negotiated during - // HTTP/2's TLS setup. - NextProtoTLS = "h2" - - // http://http2.github.io/http2-spec/#SettingValues - initialHeaderTableSize = 4096 - - initialWindowSize = 65535 // 6.9.2 Initial Flow Control Window Size - - defaultMaxReadFrameSize = 1 << 20 -) - -var ( - clientPreface = []byte(ClientPreface) -) - -type streamState int - -const ( - stateIdle streamState = iota - stateOpen - stateHalfClosedLocal - stateHalfClosedRemote - stateResvLocal - stateResvRemote - stateClosed -) - -var stateName = [...]string{ - stateIdle: "Idle", - stateOpen: "Open", - stateHalfClosedLocal: "HalfClosedLocal", - stateHalfClosedRemote: "HalfClosedRemote", - stateResvLocal: "ResvLocal", - stateResvRemote: "ResvRemote", - stateClosed: "Closed", -} - -func (st streamState) String() string { - return stateName[st] -} - -// Setting is a setting parameter: which setting it is, and its value. -type Setting struct { - // ID is which setting is being set. - // See http://http2.github.io/http2-spec/#SettingValues - ID SettingID - - // Val is the value. - Val uint32 -} - -func (s Setting) String() string { - return fmt.Sprintf("[%v = %d]", s.ID, s.Val) -} - -// Valid reports whether the setting is valid. -func (s Setting) Valid() error { - // Limits and error codes from 6.5.2 Defined SETTINGS Parameters - switch s.ID { - case SettingEnablePush: - if s.Val != 1 && s.Val != 0 { - return ConnectionError(ErrCodeProtocol) - } - case SettingInitialWindowSize: - if s.Val > 1<<31-1 { - return ConnectionError(ErrCodeFlowControl) - } - case SettingMaxFrameSize: - if s.Val < 16384 || s.Val > 1<<24-1 { - return ConnectionError(ErrCodeProtocol) - } - } - return nil -} - -// A SettingID is an HTTP/2 setting as defined in -// http://http2.github.io/http2-spec/#iana-settings -type SettingID uint16 - -const ( - SettingHeaderTableSize SettingID = 0x1 - SettingEnablePush SettingID = 0x2 - SettingMaxConcurrentStreams SettingID = 0x3 - SettingInitialWindowSize SettingID = 0x4 - SettingMaxFrameSize SettingID = 0x5 - SettingMaxHeaderListSize SettingID = 0x6 -) - -var settingName = map[SettingID]string{ - SettingHeaderTableSize: "HEADER_TABLE_SIZE", - SettingEnablePush: "ENABLE_PUSH", - SettingMaxConcurrentStreams: "MAX_CONCURRENT_STREAMS", - SettingInitialWindowSize: "INITIAL_WINDOW_SIZE", - SettingMaxFrameSize: "MAX_FRAME_SIZE", - SettingMaxHeaderListSize: "MAX_HEADER_LIST_SIZE", -} - -func (s SettingID) String() string { - if v, ok := settingName[s]; ok { - return v - } - return fmt.Sprintf("UNKNOWN_SETTING_%d", uint16(s)) -} - -var ( - errInvalidHeaderFieldName = errors.New("http2: invalid header field name") - errInvalidHeaderFieldValue = errors.New("http2: invalid header field value") -) - -// validWireHeaderFieldName reports whether v is a valid header field -// name (key). See httplex.ValidHeaderName for the base rules. -// -// Further, http2 says: -// "Just as in HTTP/1.x, header field names are strings of ASCII -// characters that are compared in a case-insensitive -// fashion. However, header field names MUST be converted to -// lowercase prior to their encoding in HTTP/2. " -func validWireHeaderFieldName(v string) bool { - if len(v) == 0 { - return false - } - for _, r := range v { - if !httplex.IsTokenRune(r) { - return false - } - if 'A' <= r && r <= 'Z' { - return false - } - } - return true -} - -var httpCodeStringCommon = map[int]string{} // n -> strconv.Itoa(n) - -func init() { - for i := 100; i <= 999; i++ { - if v := http.StatusText(i); v != "" { - httpCodeStringCommon[i] = strconv.Itoa(i) - } - } -} - -func httpCodeString(code int) string { - if s, ok := httpCodeStringCommon[code]; ok { - return s - } - return strconv.Itoa(code) -} - -// from pkg io -type stringWriter interface { - WriteString(s string) (n int, err error) -} - -// A gate lets two goroutines coordinate their activities. -type gate chan struct{} - -func (g gate) Done() { g <- struct{}{} } -func (g gate) Wait() { <-g } - -// A closeWaiter is like a sync.WaitGroup but only goes 1 to 0 (open to closed). -type closeWaiter chan struct{} - -// Init makes a closeWaiter usable. -// It exists because so a closeWaiter value can be placed inside a -// larger struct and have the Mutex and Cond's memory in the same -// allocation. -func (cw *closeWaiter) Init() { - *cw = make(chan struct{}) -} - -// Close marks the closeWaiter as closed and unblocks any waiters. -func (cw closeWaiter) Close() { - close(cw) -} - -// Wait waits for the closeWaiter to become closed. -func (cw closeWaiter) Wait() { - <-cw -} - -// bufferedWriter is a buffered writer that writes to w. -// Its buffered writer is lazily allocated as needed, to minimize -// idle memory usage with many connections. -type bufferedWriter struct { - w io.Writer // immutable - bw *bufio.Writer // non-nil when data is buffered -} - -func newBufferedWriter(w io.Writer) *bufferedWriter { - return &bufferedWriter{w: w} -} - -var bufWriterPool = sync.Pool{ - New: func() interface{} { - // TODO: pick something better? this is a bit under - // (3 x typical 1500 byte MTU) at least. - return bufio.NewWriterSize(nil, 4<<10) - }, -} - -func (w *bufferedWriter) Write(p []byte) (n int, err error) { - if w.bw == nil { - bw := bufWriterPool.Get().(*bufio.Writer) - bw.Reset(w.w) - w.bw = bw - } - return w.bw.Write(p) -} - -func (w *bufferedWriter) Flush() error { - bw := w.bw - if bw == nil { - return nil - } - err := bw.Flush() - bw.Reset(nil) - bufWriterPool.Put(bw) - w.bw = nil - return err -} - -func mustUint31(v int32) uint32 { - if v < 0 || v > 2147483647 { - panic("out of range") - } - return uint32(v) -} - -// bodyAllowedForStatus reports whether a given response status code -// permits a body. See RFC 2616, section 4.4. -func bodyAllowedForStatus(status int) bool { - switch { - case status >= 100 && status <= 199: - return false - case status == 204: - return false - case status == 304: - return false - } - return true -} - -type httpError struct { - msg string - timeout bool -} - -func (e *httpError) Error() string { return e.msg } -func (e *httpError) Timeout() bool { return e.timeout } -func (e *httpError) Temporary() bool { return true } - -var errTimeout error = &httpError{msg: "http2: timeout awaiting response headers", timeout: true} - -type connectionStater interface { - ConnectionState() tls.ConnectionState -} - -var sorterPool = sync.Pool{New: func() interface{} { return new(sorter) }} - -type sorter struct { - v []string // owned by sorter -} - -func (s *sorter) Len() int { return len(s.v) } -func (s *sorter) Swap(i, j int) { s.v[i], s.v[j] = s.v[j], s.v[i] } -func (s *sorter) Less(i, j int) bool { return s.v[i] < s.v[j] } - -// Keys returns the sorted keys of h. -// -// The returned slice is only valid until s used again or returned to -// its pool. -func (s *sorter) Keys(h http.Header) []string { - keys := s.v[:0] - for k := range h { - keys = append(keys, k) - } - s.v = keys - sort.Sort(s) - return keys -} - -func (s *sorter) SortStrings(ss []string) { - // Our sorter works on s.v, which sorter owners, so - // stash it away while we sort the user's buffer. - save := s.v - s.v = ss - sort.Sort(s) - s.v = save -} - -// validPseudoPath reports whether v is a valid :path pseudo-header -// value. It must be a non-empty string starting with '/', and not -// start with two slashes. -// For now this is only used a quick check for deciding when to clean -// up Opaque URLs before sending requests from the Transport. -// See golang.org/issue/16847 -func validPseudoPath(v string) bool { - return len(v) > 0 && v[0] == '/' && (len(v) == 1 || v[1] != '/') -} diff --git a/vendor/golang.org/x/net/http2/not_go16.go b/vendor/golang.org/x/net/http2/not_go16.go deleted file mode 100644 index efd2e1282c..0000000000 --- a/vendor/golang.org/x/net/http2/not_go16.go +++ /dev/null @@ -1,46 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !go1.6 - -package http2 - -import ( - "crypto/tls" - "net/http" - "time" -) - -func configureTransport(t1 *http.Transport) (*Transport, error) { - return nil, errTransportVersion -} - -func transportExpectContinueTimeout(t1 *http.Transport) time.Duration { - return 0 - -} - -// isBadCipher reports whether the cipher is blacklisted by the HTTP/2 spec. -func isBadCipher(cipher uint16) bool { - switch cipher { - case tls.TLS_RSA_WITH_RC4_128_SHA, - tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA, - tls.TLS_RSA_WITH_AES_128_CBC_SHA, - tls.TLS_RSA_WITH_AES_256_CBC_SHA, - tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, - tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, - tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, - tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA, - tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, - tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, - tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA: - // Reject cipher suites from Appendix A. - // "This list includes those cipher suites that do not - // offer an ephemeral key exchange and those that are - // based on the TLS null, stream or block cipher type" - return true - default: - return false - } -} diff --git a/vendor/golang.org/x/net/http2/not_go17.go b/vendor/golang.org/x/net/http2/not_go17.go deleted file mode 100644 index 28df0c16bf..0000000000 --- a/vendor/golang.org/x/net/http2/not_go17.go +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !go1.7 - -package http2 - -import ( - "net" - "net/http" -) - -type contextContext interface{} - -type fakeContext struct{} - -func (fakeContext) Done() <-chan struct{} { return nil } -func (fakeContext) Err() error { panic("should not be called") } - -func reqContext(r *http.Request) fakeContext { - return fakeContext{} -} - -func setResponseUncompressed(res *http.Response) { - // Nothing. -} - -type clientTrace struct{} - -func requestTrace(*http.Request) *clientTrace { return nil } -func traceGotConn(*http.Request, *ClientConn) {} -func traceFirstResponseByte(*clientTrace) {} -func traceWroteHeaders(*clientTrace) {} -func traceWroteRequest(*clientTrace, error) {} -func traceGot100Continue(trace *clientTrace) {} -func traceWait100Continue(trace *clientTrace) {} - -func nop() {} - -func serverConnBaseContext(c net.Conn, opts *ServeConnOpts) (ctx contextContext, cancel func()) { - return nil, nop -} - -func contextWithCancel(ctx contextContext) (_ contextContext, cancel func()) { - return ctx, nop -} - -func requestWithContext(req *http.Request, ctx contextContext) *http.Request { - return req -} diff --git a/vendor/golang.org/x/net/http2/pipe.go b/vendor/golang.org/x/net/http2/pipe.go deleted file mode 100644 index 53b7a1daf6..0000000000 --- a/vendor/golang.org/x/net/http2/pipe.go +++ /dev/null @@ -1,153 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package http2 - -import ( - "errors" - "io" - "sync" -) - -// pipe is a goroutine-safe io.Reader/io.Writer pair. It's like -// io.Pipe except there are no PipeReader/PipeWriter halves, and the -// underlying buffer is an interface. (io.Pipe is always unbuffered) -type pipe struct { - mu sync.Mutex - c sync.Cond // c.L lazily initialized to &p.mu - b pipeBuffer - err error // read error once empty. non-nil means closed. - breakErr error // immediate read error (caller doesn't see rest of b) - donec chan struct{} // closed on error - readFn func() // optional code to run in Read before error -} - -type pipeBuffer interface { - Len() int - io.Writer - io.Reader -} - -func (p *pipe) Len() int { - p.mu.Lock() - defer p.mu.Unlock() - return p.b.Len() -} - -// Read waits until data is available and copies bytes -// from the buffer into p. -func (p *pipe) Read(d []byte) (n int, err error) { - p.mu.Lock() - defer p.mu.Unlock() - if p.c.L == nil { - p.c.L = &p.mu - } - for { - if p.breakErr != nil { - return 0, p.breakErr - } - if p.b.Len() > 0 { - return p.b.Read(d) - } - if p.err != nil { - if p.readFn != nil { - p.readFn() // e.g. copy trailers - p.readFn = nil // not sticky like p.err - } - return 0, p.err - } - p.c.Wait() - } -} - -var errClosedPipeWrite = errors.New("write on closed buffer") - -// Write copies bytes from p into the buffer and wakes a reader. -// It is an error to write more data than the buffer can hold. -func (p *pipe) Write(d []byte) (n int, err error) { - p.mu.Lock() - defer p.mu.Unlock() - if p.c.L == nil { - p.c.L = &p.mu - } - defer p.c.Signal() - if p.err != nil { - return 0, errClosedPipeWrite - } - return p.b.Write(d) -} - -// CloseWithError causes the next Read (waking up a current blocked -// Read if needed) to return the provided err after all data has been -// read. -// -// The error must be non-nil. -func (p *pipe) CloseWithError(err error) { p.closeWithError(&p.err, err, nil) } - -// BreakWithError causes the next Read (waking up a current blocked -// Read if needed) to return the provided err immediately, without -// waiting for unread data. -func (p *pipe) BreakWithError(err error) { p.closeWithError(&p.breakErr, err, nil) } - -// closeWithErrorAndCode is like CloseWithError but also sets some code to run -// in the caller's goroutine before returning the error. -func (p *pipe) closeWithErrorAndCode(err error, fn func()) { p.closeWithError(&p.err, err, fn) } - -func (p *pipe) closeWithError(dst *error, err error, fn func()) { - if err == nil { - panic("err must be non-nil") - } - p.mu.Lock() - defer p.mu.Unlock() - if p.c.L == nil { - p.c.L = &p.mu - } - defer p.c.Signal() - if *dst != nil { - // Already been done. - return - } - p.readFn = fn - *dst = err - p.closeDoneLocked() -} - -// requires p.mu be held. -func (p *pipe) closeDoneLocked() { - if p.donec == nil { - return - } - // Close if unclosed. This isn't racy since we always - // hold p.mu while closing. - select { - case <-p.donec: - default: - close(p.donec) - } -} - -// Err returns the error (if any) first set by BreakWithError or CloseWithError. -func (p *pipe) Err() error { - p.mu.Lock() - defer p.mu.Unlock() - if p.breakErr != nil { - return p.breakErr - } - return p.err -} - -// Done returns a channel which is closed if and when this pipe is closed -// with CloseWithError. -func (p *pipe) Done() <-chan struct{} { - p.mu.Lock() - defer p.mu.Unlock() - if p.donec == nil { - p.donec = make(chan struct{}) - if p.err != nil || p.breakErr != nil { - // Already hit an error. - p.closeDoneLocked() - } - } - return p.donec -} diff --git a/vendor/golang.org/x/net/http2/server.go b/vendor/golang.org/x/net/http2/server.go deleted file mode 100644 index 8206fa79d8..0000000000 --- a/vendor/golang.org/x/net/http2/server.go +++ /dev/null @@ -1,2292 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// TODO: replace all <-sc.doneServing with reads from the stream's cw -// instead, and make sure that on close we close all open -// streams. then remove doneServing? - -// TODO: re-audit GOAWAY support. Consider each incoming frame type and -// whether it should be ignored during graceful shutdown. - -// TODO: disconnect idle clients. GFE seems to do 4 minutes. make -// configurable? or maximum number of idle clients and remove the -// oldest? - -// TODO: turn off the serve goroutine when idle, so -// an idle conn only has the readFrames goroutine active. (which could -// also be optimized probably to pin less memory in crypto/tls). This -// would involve tracking when the serve goroutine is active (atomic -// int32 read/CAS probably?) and starting it up when frames arrive, -// and shutting it down when all handlers exit. the occasional PING -// packets could use time.AfterFunc to call sc.wakeStartServeLoop() -// (which is a no-op if already running) and then queue the PING write -// as normal. The serve loop would then exit in most cases (if no -// Handlers running) and not be woken up again until the PING packet -// returns. - -// TODO (maybe): add a mechanism for Handlers to going into -// half-closed-local mode (rw.(io.Closer) test?) but not exit their -// handler, and continue to be able to read from the -// Request.Body. This would be a somewhat semantic change from HTTP/1 -// (or at least what we expose in net/http), so I'd probably want to -// add it there too. For now, this package says that returning from -// the Handler ServeHTTP function means you're both done reading and -// done writing, without a way to stop just one or the other. - -package http2 - -import ( - "bufio" - "bytes" - "crypto/tls" - "errors" - "fmt" - "io" - "log" - "net" - "net/http" - "net/textproto" - "net/url" - "os" - "reflect" - "runtime" - "strconv" - "strings" - "sync" - "time" - - "golang.org/x/net/http2/hpack" -) - -const ( - prefaceTimeout = 10 * time.Second - firstSettingsTimeout = 2 * time.Second // should be in-flight with preface anyway - handlerChunkWriteSize = 4 << 10 - defaultMaxStreams = 250 // TODO: make this 100 as the GFE seems to? -) - -var ( - errClientDisconnected = errors.New("client disconnected") - errClosedBody = errors.New("body closed by handler") - errHandlerComplete = errors.New("http2: request body closed due to handler exiting") - errStreamClosed = errors.New("http2: stream closed") -) - -var responseWriterStatePool = sync.Pool{ - New: func() interface{} { - rws := &responseWriterState{} - rws.bw = bufio.NewWriterSize(chunkWriter{rws}, handlerChunkWriteSize) - return rws - }, -} - -// Test hooks. -var ( - testHookOnConn func() - testHookGetServerConn func(*serverConn) - testHookOnPanicMu *sync.Mutex // nil except in tests - testHookOnPanic func(sc *serverConn, panicVal interface{}) (rePanic bool) -) - -// Server is an HTTP/2 server. -type Server struct { - // MaxHandlers limits the number of http.Handler ServeHTTP goroutines - // which may run at a time over all connections. - // Negative or zero no limit. - // TODO: implement - MaxHandlers int - - // MaxConcurrentStreams optionally specifies the number of - // concurrent streams that each client may have open at a - // time. This is unrelated to the number of http.Handler goroutines - // which may be active globally, which is MaxHandlers. - // If zero, MaxConcurrentStreams defaults to at least 100, per - // the HTTP/2 spec's recommendations. - MaxConcurrentStreams uint32 - - // MaxReadFrameSize optionally specifies the largest frame - // this server is willing to read. A valid value is between - // 16k and 16M, inclusive. If zero or otherwise invalid, a - // default value is used. - MaxReadFrameSize uint32 - - // PermitProhibitedCipherSuites, if true, permits the use of - // cipher suites prohibited by the HTTP/2 spec. - PermitProhibitedCipherSuites bool -} - -func (s *Server) maxReadFrameSize() uint32 { - if v := s.MaxReadFrameSize; v >= minMaxFrameSize && v <= maxFrameSize { - return v - } - return defaultMaxReadFrameSize -} - -func (s *Server) maxConcurrentStreams() uint32 { - if v := s.MaxConcurrentStreams; v > 0 { - return v - } - return defaultMaxStreams -} - -// ConfigureServer adds HTTP/2 support to a net/http Server. -// -// The configuration conf may be nil. -// -// ConfigureServer must be called before s begins serving. -func ConfigureServer(s *http.Server, conf *Server) error { - if conf == nil { - conf = new(Server) - } - - if s.TLSConfig == nil { - s.TLSConfig = new(tls.Config) - } else if s.TLSConfig.CipherSuites != nil { - // If they already provided a CipherSuite list, return - // an error if it has a bad order or is missing - // ECDHE_RSA_WITH_AES_128_GCM_SHA256. - const requiredCipher = tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 - haveRequired := false - sawBad := false - for i, cs := range s.TLSConfig.CipherSuites { - if cs == requiredCipher { - haveRequired = true - } - if isBadCipher(cs) { - sawBad = true - } else if sawBad { - return fmt.Errorf("http2: TLSConfig.CipherSuites index %d contains an HTTP/2-approved cipher suite (%#04x), but it comes after unapproved cipher suites. With this configuration, clients that don't support previous, approved cipher suites may be given an unapproved one and reject the connection.", i, cs) - } - } - if !haveRequired { - return fmt.Errorf("http2: TLSConfig.CipherSuites is missing HTTP/2-required TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256") - } - } - - // Note: not setting MinVersion to tls.VersionTLS12, - // as we don't want to interfere with HTTP/1.1 traffic - // on the user's server. We enforce TLS 1.2 later once - // we accept a connection. Ideally this should be done - // during next-proto selection, but using TLS <1.2 with - // HTTP/2 is still the client's bug. - - s.TLSConfig.PreferServerCipherSuites = true - - haveNPN := false - for _, p := range s.TLSConfig.NextProtos { - if p == NextProtoTLS { - haveNPN = true - break - } - } - if !haveNPN { - s.TLSConfig.NextProtos = append(s.TLSConfig.NextProtos, NextProtoTLS) - } - // h2-14 is temporary (as of 2015-03-05) while we wait for all browsers - // to switch to "h2". - s.TLSConfig.NextProtos = append(s.TLSConfig.NextProtos, "h2-14") - - if s.TLSNextProto == nil { - s.TLSNextProto = map[string]func(*http.Server, *tls.Conn, http.Handler){} - } - protoHandler := func(hs *http.Server, c *tls.Conn, h http.Handler) { - if testHookOnConn != nil { - testHookOnConn() - } - conf.ServeConn(c, &ServeConnOpts{ - Handler: h, - BaseConfig: hs, - }) - } - s.TLSNextProto[NextProtoTLS] = protoHandler - s.TLSNextProto["h2-14"] = protoHandler // temporary; see above. - return nil -} - -// ServeConnOpts are options for the Server.ServeConn method. -type ServeConnOpts struct { - // BaseConfig optionally sets the base configuration - // for values. If nil, defaults are used. - BaseConfig *http.Server - - // Handler specifies which handler to use for processing - // requests. If nil, BaseConfig.Handler is used. If BaseConfig - // or BaseConfig.Handler is nil, http.DefaultServeMux is used. - Handler http.Handler -} - -func (o *ServeConnOpts) baseConfig() *http.Server { - if o != nil && o.BaseConfig != nil { - return o.BaseConfig - } - return new(http.Server) -} - -func (o *ServeConnOpts) handler() http.Handler { - if o != nil { - if o.Handler != nil { - return o.Handler - } - if o.BaseConfig != nil && o.BaseConfig.Handler != nil { - return o.BaseConfig.Handler - } - } - return http.DefaultServeMux -} - -// ServeConn serves HTTP/2 requests on the provided connection and -// blocks until the connection is no longer readable. -// -// ServeConn starts speaking HTTP/2 assuming that c has not had any -// reads or writes. It writes its initial settings frame and expects -// to be able to read the preface and settings frame from the -// client. If c has a ConnectionState method like a *tls.Conn, the -// ConnectionState is used to verify the TLS ciphersuite and to set -// the Request.TLS field in Handlers. -// -// ServeConn does not support h2c by itself. Any h2c support must be -// implemented in terms of providing a suitably-behaving net.Conn. -// -// The opts parameter is optional. If nil, default values are used. -func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) { - baseCtx, cancel := serverConnBaseContext(c, opts) - defer cancel() - - sc := &serverConn{ - srv: s, - hs: opts.baseConfig(), - conn: c, - baseCtx: baseCtx, - remoteAddrStr: c.RemoteAddr().String(), - bw: newBufferedWriter(c), - handler: opts.handler(), - streams: make(map[uint32]*stream), - readFrameCh: make(chan readFrameResult), - wantWriteFrameCh: make(chan frameWriteMsg, 8), - wroteFrameCh: make(chan frameWriteResult, 1), // buffered; one send in writeFrameAsync - bodyReadCh: make(chan bodyReadMsg), // buffering doesn't matter either way - doneServing: make(chan struct{}), - advMaxStreams: s.maxConcurrentStreams(), - writeSched: writeScheduler{ - maxFrameSize: initialMaxFrameSize, - }, - initialWindowSize: initialWindowSize, - headerTableSize: initialHeaderTableSize, - serveG: newGoroutineLock(), - pushEnabled: true, - } - - sc.flow.add(initialWindowSize) - sc.inflow.add(initialWindowSize) - sc.hpackEncoder = hpack.NewEncoder(&sc.headerWriteBuf) - - fr := NewFramer(sc.bw, c) - fr.ReadMetaHeaders = hpack.NewDecoder(initialHeaderTableSize, nil) - fr.MaxHeaderListSize = sc.maxHeaderListSize() - fr.SetMaxReadFrameSize(s.maxReadFrameSize()) - sc.framer = fr - - if tc, ok := c.(connectionStater); ok { - sc.tlsState = new(tls.ConnectionState) - *sc.tlsState = tc.ConnectionState() - // 9.2 Use of TLS Features - // An implementation of HTTP/2 over TLS MUST use TLS - // 1.2 or higher with the restrictions on feature set - // and cipher suite described in this section. Due to - // implementation limitations, it might not be - // possible to fail TLS negotiation. An endpoint MUST - // immediately terminate an HTTP/2 connection that - // does not meet the TLS requirements described in - // this section with a connection error (Section - // 5.4.1) of type INADEQUATE_SECURITY. - if sc.tlsState.Version < tls.VersionTLS12 { - sc.rejectConn(ErrCodeInadequateSecurity, "TLS version too low") - return - } - - if sc.tlsState.ServerName == "" { - // Client must use SNI, but we don't enforce that anymore, - // since it was causing problems when connecting to bare IP - // addresses during development. - // - // TODO: optionally enforce? Or enforce at the time we receive - // a new request, and verify the the ServerName matches the :authority? - // But that precludes proxy situations, perhaps. - // - // So for now, do nothing here again. - } - - if !s.PermitProhibitedCipherSuites && isBadCipher(sc.tlsState.CipherSuite) { - // "Endpoints MAY choose to generate a connection error - // (Section 5.4.1) of type INADEQUATE_SECURITY if one of - // the prohibited cipher suites are negotiated." - // - // We choose that. In my opinion, the spec is weak - // here. It also says both parties must support at least - // TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 so there's no - // excuses here. If we really must, we could allow an - // "AllowInsecureWeakCiphers" option on the server later. - // Let's see how it plays out first. - sc.rejectConn(ErrCodeInadequateSecurity, fmt.Sprintf("Prohibited TLS 1.2 Cipher Suite: %x", sc.tlsState.CipherSuite)) - return - } - } - - if hook := testHookGetServerConn; hook != nil { - hook(sc) - } - sc.serve() -} - -func (sc *serverConn) rejectConn(err ErrCode, debug string) { - sc.vlogf("http2: server rejecting conn: %v, %s", err, debug) - // ignoring errors. hanging up anyway. - sc.framer.WriteGoAway(0, err, []byte(debug)) - sc.bw.Flush() - sc.conn.Close() -} - -type serverConn struct { - // Immutable: - srv *Server - hs *http.Server - conn net.Conn - bw *bufferedWriter // writing to conn - handler http.Handler - baseCtx contextContext - framer *Framer - doneServing chan struct{} // closed when serverConn.serve ends - readFrameCh chan readFrameResult // written by serverConn.readFrames - wantWriteFrameCh chan frameWriteMsg // from handlers -> serve - wroteFrameCh chan frameWriteResult // from writeFrameAsync -> serve, tickles more frame writes - bodyReadCh chan bodyReadMsg // from handlers -> serve - testHookCh chan func(int) // code to run on the serve loop - flow flow // conn-wide (not stream-specific) outbound flow control - inflow flow // conn-wide inbound flow control - tlsState *tls.ConnectionState // shared by all handlers, like net/http - remoteAddrStr string - - // Everything following is owned by the serve loop; use serveG.check(): - serveG goroutineLock // used to verify funcs are on serve() - pushEnabled bool - sawFirstSettings bool // got the initial SETTINGS frame after the preface - needToSendSettingsAck bool - unackedSettings int // how many SETTINGS have we sent without ACKs? - clientMaxStreams uint32 // SETTINGS_MAX_CONCURRENT_STREAMS from client (our PUSH_PROMISE limit) - advMaxStreams uint32 // our SETTINGS_MAX_CONCURRENT_STREAMS advertised the client - curOpenStreams uint32 // client's number of open streams - maxStreamID uint32 // max ever seen - streams map[uint32]*stream - initialWindowSize int32 - headerTableSize uint32 - peerMaxHeaderListSize uint32 // zero means unknown (default) - canonHeader map[string]string // http2-lower-case -> Go-Canonical-Case - writingFrame bool // started write goroutine but haven't heard back on wroteFrameCh - needsFrameFlush bool // last frame write wasn't a flush - writeSched writeScheduler - inGoAway bool // we've started to or sent GOAWAY - needToSendGoAway bool // we need to schedule a GOAWAY frame write - goAwayCode ErrCode - shutdownTimerCh <-chan time.Time // nil until used - shutdownTimer *time.Timer // nil until used - freeRequestBodyBuf []byte // if non-nil, a free initialWindowSize buffer for getRequestBodyBuf - - // Owned by the writeFrameAsync goroutine: - headerWriteBuf bytes.Buffer - hpackEncoder *hpack.Encoder -} - -func (sc *serverConn) maxHeaderListSize() uint32 { - n := sc.hs.MaxHeaderBytes - if n <= 0 { - n = http.DefaultMaxHeaderBytes - } - // http2's count is in a slightly different unit and includes 32 bytes per pair. - // So, take the net/http.Server value and pad it up a bit, assuming 10 headers. - const perFieldOverhead = 32 // per http2 spec - const typicalHeaders = 10 // conservative - return uint32(n + typicalHeaders*perFieldOverhead) -} - -// stream represents a stream. This is the minimal metadata needed by -// the serve goroutine. Most of the actual stream state is owned by -// the http.Handler's goroutine in the responseWriter. Because the -// responseWriter's responseWriterState is recycled at the end of a -// handler, this struct intentionally has no pointer to the -// *responseWriter{,State} itself, as the Handler ending nils out the -// responseWriter's state field. -type stream struct { - // immutable: - sc *serverConn - id uint32 - body *pipe // non-nil if expecting DATA frames - cw closeWaiter // closed wait stream transitions to closed state - ctx contextContext - cancelCtx func() - - // owned by serverConn's serve loop: - bodyBytes int64 // body bytes seen so far - declBodyBytes int64 // or -1 if undeclared - flow flow // limits writing from Handler to client - inflow flow // what the client is allowed to POST/etc to us - parent *stream // or nil - numTrailerValues int64 - weight uint8 - state streamState - sentReset bool // only true once detached from streams map - gotReset bool // only true once detacted from streams map - gotTrailerHeader bool // HEADER frame for trailers was seen - wroteHeaders bool // whether we wrote headers (not status 100) - reqBuf []byte - - trailer http.Header // accumulated trailers - reqTrailer http.Header // handler's Request.Trailer -} - -func (sc *serverConn) Framer() *Framer { return sc.framer } -func (sc *serverConn) CloseConn() error { return sc.conn.Close() } -func (sc *serverConn) Flush() error { return sc.bw.Flush() } -func (sc *serverConn) HeaderEncoder() (*hpack.Encoder, *bytes.Buffer) { - return sc.hpackEncoder, &sc.headerWriteBuf -} - -func (sc *serverConn) state(streamID uint32) (streamState, *stream) { - sc.serveG.check() - // http://http2.github.io/http2-spec/#rfc.section.5.1 - if st, ok := sc.streams[streamID]; ok { - return st.state, st - } - // "The first use of a new stream identifier implicitly closes all - // streams in the "idle" state that might have been initiated by - // that peer with a lower-valued stream identifier. For example, if - // a client sends a HEADERS frame on stream 7 without ever sending a - // frame on stream 5, then stream 5 transitions to the "closed" - // state when the first frame for stream 7 is sent or received." - if streamID <= sc.maxStreamID { - return stateClosed, nil - } - return stateIdle, nil -} - -// setConnState calls the net/http ConnState hook for this connection, if configured. -// Note that the net/http package does StateNew and StateClosed for us. -// There is currently no plan for StateHijacked or hijacking HTTP/2 connections. -func (sc *serverConn) setConnState(state http.ConnState) { - if sc.hs.ConnState != nil { - sc.hs.ConnState(sc.conn, state) - } -} - -func (sc *serverConn) vlogf(format string, args ...interface{}) { - if VerboseLogs { - sc.logf(format, args...) - } -} - -func (sc *serverConn) logf(format string, args ...interface{}) { - if lg := sc.hs.ErrorLog; lg != nil { - lg.Printf(format, args...) - } else { - log.Printf(format, args...) - } -} - -// errno returns v's underlying uintptr, else 0. -// -// TODO: remove this helper function once http2 can use build -// tags. See comment in isClosedConnError. -func errno(v error) uintptr { - if rv := reflect.ValueOf(v); rv.Kind() == reflect.Uintptr { - return uintptr(rv.Uint()) - } - return 0 -} - -// isClosedConnError reports whether err is an error from use of a closed -// network connection. -func isClosedConnError(err error) bool { - if err == nil { - return false - } - - // TODO: remove this string search and be more like the Windows - // case below. That might involve modifying the standard library - // to return better error types. - str := err.Error() - if strings.Contains(str, "use of closed network connection") { - return true - } - - // TODO(bradfitz): x/tools/cmd/bundle doesn't really support - // build tags, so I can't make an http2_windows.go file with - // Windows-specific stuff. Fix that and move this, once we - // have a way to bundle this into std's net/http somehow. - if runtime.GOOS == "windows" { - if oe, ok := err.(*net.OpError); ok && oe.Op == "read" { - if se, ok := oe.Err.(*os.SyscallError); ok && se.Syscall == "wsarecv" { - const WSAECONNABORTED = 10053 - const WSAECONNRESET = 10054 - if n := errno(se.Err); n == WSAECONNRESET || n == WSAECONNABORTED { - return true - } - } - } - } - return false -} - -func (sc *serverConn) condlogf(err error, format string, args ...interface{}) { - if err == nil { - return - } - if err == io.EOF || err == io.ErrUnexpectedEOF || isClosedConnError(err) { - // Boring, expected errors. - sc.vlogf(format, args...) - } else { - sc.logf(format, args...) - } -} - -func (sc *serverConn) canonicalHeader(v string) string { - sc.serveG.check() - cv, ok := commonCanonHeader[v] - if ok { - return cv - } - cv, ok = sc.canonHeader[v] - if ok { - return cv - } - if sc.canonHeader == nil { - sc.canonHeader = make(map[string]string) - } - cv = http.CanonicalHeaderKey(v) - sc.canonHeader[v] = cv - return cv -} - -type readFrameResult struct { - f Frame // valid until readMore is called - err error - - // readMore should be called once the consumer no longer needs or - // retains f. After readMore, f is invalid and more frames can be - // read. - readMore func() -} - -// readFrames is the loop that reads incoming frames. -// It takes care to only read one frame at a time, blocking until the -// consumer is done with the frame. -// It's run on its own goroutine. -func (sc *serverConn) readFrames() { - gate := make(gate) - gateDone := gate.Done - for { - f, err := sc.framer.ReadFrame() - select { - case sc.readFrameCh <- readFrameResult{f, err, gateDone}: - case <-sc.doneServing: - return - } - select { - case <-gate: - case <-sc.doneServing: - return - } - if terminalReadFrameError(err) { - return - } - } -} - -// frameWriteResult is the message passed from writeFrameAsync to the serve goroutine. -type frameWriteResult struct { - wm frameWriteMsg // what was written (or attempted) - err error // result of the writeFrame call -} - -// writeFrameAsync runs in its own goroutine and writes a single frame -// and then reports when it's done. -// At most one goroutine can be running writeFrameAsync at a time per -// serverConn. -func (sc *serverConn) writeFrameAsync(wm frameWriteMsg) { - err := wm.write.writeFrame(sc) - sc.wroteFrameCh <- frameWriteResult{wm, err} -} - -func (sc *serverConn) closeAllStreamsOnConnClose() { - sc.serveG.check() - for _, st := range sc.streams { - sc.closeStream(st, errClientDisconnected) - } -} - -func (sc *serverConn) stopShutdownTimer() { - sc.serveG.check() - if t := sc.shutdownTimer; t != nil { - t.Stop() - } -} - -func (sc *serverConn) notePanic() { - // Note: this is for serverConn.serve panicking, not http.Handler code. - if testHookOnPanicMu != nil { - testHookOnPanicMu.Lock() - defer testHookOnPanicMu.Unlock() - } - if testHookOnPanic != nil { - if e := recover(); e != nil { - if testHookOnPanic(sc, e) { - panic(e) - } - } - } -} - -func (sc *serverConn) serve() { - sc.serveG.check() - defer sc.notePanic() - defer sc.conn.Close() - defer sc.closeAllStreamsOnConnClose() - defer sc.stopShutdownTimer() - defer close(sc.doneServing) // unblocks handlers trying to send - - if VerboseLogs { - sc.vlogf("http2: server connection from %v on %p", sc.conn.RemoteAddr(), sc.hs) - } - - sc.writeFrame(frameWriteMsg{ - write: writeSettings{ - {SettingMaxFrameSize, sc.srv.maxReadFrameSize()}, - {SettingMaxConcurrentStreams, sc.advMaxStreams}, - {SettingMaxHeaderListSize, sc.maxHeaderListSize()}, - - // TODO: more actual settings, notably - // SettingInitialWindowSize, but then we also - // want to bump up the conn window size the - // same amount here right after the settings - }, - }) - sc.unackedSettings++ - - if err := sc.readPreface(); err != nil { - sc.condlogf(err, "http2: server: error reading preface from client %v: %v", sc.conn.RemoteAddr(), err) - return - } - // Now that we've got the preface, get us out of the - // "StateNew" state. We can't go directly to idle, though. - // Active means we read some data and anticipate a request. We'll - // do another Active when we get a HEADERS frame. - sc.setConnState(http.StateActive) - sc.setConnState(http.StateIdle) - - go sc.readFrames() // closed by defer sc.conn.Close above - - settingsTimer := time.NewTimer(firstSettingsTimeout) - loopNum := 0 - for { - loopNum++ - select { - case wm := <-sc.wantWriteFrameCh: - sc.writeFrame(wm) - case res := <-sc.wroteFrameCh: - sc.wroteFrame(res) - case res := <-sc.readFrameCh: - if !sc.processFrameFromReader(res) { - return - } - res.readMore() - if settingsTimer.C != nil { - settingsTimer.Stop() - settingsTimer.C = nil - } - case m := <-sc.bodyReadCh: - sc.noteBodyRead(m.st, m.n) - case <-settingsTimer.C: - sc.logf("timeout waiting for SETTINGS frames from %v", sc.conn.RemoteAddr()) - return - case <-sc.shutdownTimerCh: - sc.vlogf("GOAWAY close timer fired; closing conn from %v", sc.conn.RemoteAddr()) - return - case fn := <-sc.testHookCh: - fn(loopNum) - } - } -} - -// readPreface reads the ClientPreface greeting from the peer -// or returns an error on timeout or an invalid greeting. -func (sc *serverConn) readPreface() error { - errc := make(chan error, 1) - go func() { - // Read the client preface - buf := make([]byte, len(ClientPreface)) - if _, err := io.ReadFull(sc.conn, buf); err != nil { - errc <- err - } else if !bytes.Equal(buf, clientPreface) { - errc <- fmt.Errorf("bogus greeting %q", buf) - } else { - errc <- nil - } - }() - timer := time.NewTimer(prefaceTimeout) // TODO: configurable on *Server? - defer timer.Stop() - select { - case <-timer.C: - return errors.New("timeout waiting for client preface") - case err := <-errc: - if err == nil { - if VerboseLogs { - sc.vlogf("http2: server: client %v said hello", sc.conn.RemoteAddr()) - } - } - return err - } -} - -var errChanPool = sync.Pool{ - New: func() interface{} { return make(chan error, 1) }, -} - -var writeDataPool = sync.Pool{ - New: func() interface{} { return new(writeData) }, -} - -// writeDataFromHandler writes DATA response frames from a handler on -// the given stream. -func (sc *serverConn) writeDataFromHandler(stream *stream, data []byte, endStream bool) error { - ch := errChanPool.Get().(chan error) - writeArg := writeDataPool.Get().(*writeData) - *writeArg = writeData{stream.id, data, endStream} - err := sc.writeFrameFromHandler(frameWriteMsg{ - write: writeArg, - stream: stream, - done: ch, - }) - if err != nil { - return err - } - var frameWriteDone bool // the frame write is done (successfully or not) - select { - case err = <-ch: - frameWriteDone = true - case <-sc.doneServing: - return errClientDisconnected - case <-stream.cw: - // If both ch and stream.cw were ready (as might - // happen on the final Write after an http.Handler - // ends), prefer the write result. Otherwise this - // might just be us successfully closing the stream. - // The writeFrameAsync and serve goroutines guarantee - // that the ch send will happen before the stream.cw - // close. - select { - case err = <-ch: - frameWriteDone = true - default: - return errStreamClosed - } - } - errChanPool.Put(ch) - if frameWriteDone { - writeDataPool.Put(writeArg) - } - return err -} - -// writeFrameFromHandler sends wm to sc.wantWriteFrameCh, but aborts -// if the connection has gone away. -// -// This must not be run from the serve goroutine itself, else it might -// deadlock writing to sc.wantWriteFrameCh (which is only mildly -// buffered and is read by serve itself). If you're on the serve -// goroutine, call writeFrame instead. -func (sc *serverConn) writeFrameFromHandler(wm frameWriteMsg) error { - sc.serveG.checkNotOn() // NOT - select { - case sc.wantWriteFrameCh <- wm: - return nil - case <-sc.doneServing: - // Serve loop is gone. - // Client has closed their connection to the server. - return errClientDisconnected - } -} - -// writeFrame schedules a frame to write and sends it if there's nothing -// already being written. -// -// There is no pushback here (the serve goroutine never blocks). It's -// the http.Handlers that block, waiting for their previous frames to -// make it onto the wire -// -// If you're not on the serve goroutine, use writeFrameFromHandler instead. -func (sc *serverConn) writeFrame(wm frameWriteMsg) { - sc.serveG.check() - - var ignoreWrite bool - - // Don't send a 100-continue response if we've already sent headers. - // See golang.org/issue/14030. - switch wm.write.(type) { - case *writeResHeaders: - wm.stream.wroteHeaders = true - case write100ContinueHeadersFrame: - if wm.stream.wroteHeaders { - ignoreWrite = true - } - } - - if !ignoreWrite { - sc.writeSched.add(wm) - } - sc.scheduleFrameWrite() -} - -// startFrameWrite starts a goroutine to write wm (in a separate -// goroutine since that might block on the network), and updates the -// serve goroutine's state about the world, updated from info in wm. -func (sc *serverConn) startFrameWrite(wm frameWriteMsg) { - sc.serveG.check() - if sc.writingFrame { - panic("internal error: can only be writing one frame at a time") - } - - st := wm.stream - if st != nil { - switch st.state { - case stateHalfClosedLocal: - panic("internal error: attempt to send frame on half-closed-local stream") - case stateClosed: - if st.sentReset || st.gotReset { - // Skip this frame. - sc.scheduleFrameWrite() - return - } - panic(fmt.Sprintf("internal error: attempt to send a write %v on a closed stream", wm)) - } - } - - sc.writingFrame = true - sc.needsFrameFlush = true - go sc.writeFrameAsync(wm) -} - -// errHandlerPanicked is the error given to any callers blocked in a read from -// Request.Body when the main goroutine panics. Since most handlers read in the -// the main ServeHTTP goroutine, this will show up rarely. -var errHandlerPanicked = errors.New("http2: handler panicked") - -// wroteFrame is called on the serve goroutine with the result of -// whatever happened on writeFrameAsync. -func (sc *serverConn) wroteFrame(res frameWriteResult) { - sc.serveG.check() - if !sc.writingFrame { - panic("internal error: expected to be already writing a frame") - } - sc.writingFrame = false - - wm := res.wm - st := wm.stream - - closeStream := endsStream(wm.write) - - if _, ok := wm.write.(handlerPanicRST); ok { - sc.closeStream(st, errHandlerPanicked) - } - - // Reply (if requested) to the blocked ServeHTTP goroutine. - if ch := wm.done; ch != nil { - select { - case ch <- res.err: - default: - panic(fmt.Sprintf("unbuffered done channel passed in for type %T", wm.write)) - } - } - wm.write = nil // prevent use (assume it's tainted after wm.done send) - - if closeStream { - if st == nil { - panic("internal error: expecting non-nil stream") - } - switch st.state { - case stateOpen: - // Here we would go to stateHalfClosedLocal in - // theory, but since our handler is done and - // the net/http package provides no mechanism - // for finishing writing to a ResponseWriter - // while still reading data (see possible TODO - // at top of this file), we go into closed - // state here anyway, after telling the peer - // we're hanging up on them. - st.state = stateHalfClosedLocal // won't last long, but necessary for closeStream via resetStream - errCancel := streamError(st.id, ErrCodeCancel) - sc.resetStream(errCancel) - case stateHalfClosedRemote: - sc.closeStream(st, errHandlerComplete) - } - } - - sc.scheduleFrameWrite() -} - -// scheduleFrameWrite tickles the frame writing scheduler. -// -// If a frame is already being written, nothing happens. This will be called again -// when the frame is done being written. -// -// If a frame isn't being written we need to send one, the best frame -// to send is selected, preferring first things that aren't -// stream-specific (e.g. ACKing settings), and then finding the -// highest priority stream. -// -// If a frame isn't being written and there's nothing else to send, we -// flush the write buffer. -func (sc *serverConn) scheduleFrameWrite() { - sc.serveG.check() - if sc.writingFrame { - return - } - if sc.needToSendGoAway { - sc.needToSendGoAway = false - sc.startFrameWrite(frameWriteMsg{ - write: &writeGoAway{ - maxStreamID: sc.maxStreamID, - code: sc.goAwayCode, - }, - }) - return - } - if sc.needToSendSettingsAck { - sc.needToSendSettingsAck = false - sc.startFrameWrite(frameWriteMsg{write: writeSettingsAck{}}) - return - } - if !sc.inGoAway { - if wm, ok := sc.writeSched.take(); ok { - sc.startFrameWrite(wm) - return - } - } - if sc.needsFrameFlush { - sc.startFrameWrite(frameWriteMsg{write: flushFrameWriter{}}) - sc.needsFrameFlush = false // after startFrameWrite, since it sets this true - return - } -} - -func (sc *serverConn) goAway(code ErrCode) { - sc.serveG.check() - if sc.inGoAway { - return - } - if code != ErrCodeNo { - sc.shutDownIn(250 * time.Millisecond) - } else { - // TODO: configurable - sc.shutDownIn(1 * time.Second) - } - sc.inGoAway = true - sc.needToSendGoAway = true - sc.goAwayCode = code - sc.scheduleFrameWrite() -} - -func (sc *serverConn) shutDownIn(d time.Duration) { - sc.serveG.check() - sc.shutdownTimer = time.NewTimer(d) - sc.shutdownTimerCh = sc.shutdownTimer.C -} - -func (sc *serverConn) resetStream(se StreamError) { - sc.serveG.check() - sc.writeFrame(frameWriteMsg{write: se}) - if st, ok := sc.streams[se.StreamID]; ok { - st.sentReset = true - sc.closeStream(st, se) - } -} - -// processFrameFromReader processes the serve loop's read from readFrameCh from the -// frame-reading goroutine. -// processFrameFromReader returns whether the connection should be kept open. -func (sc *serverConn) processFrameFromReader(res readFrameResult) bool { - sc.serveG.check() - err := res.err - if err != nil { - if err == ErrFrameTooLarge { - sc.goAway(ErrCodeFrameSize) - return true // goAway will close the loop - } - clientGone := err == io.EOF || err == io.ErrUnexpectedEOF || isClosedConnError(err) - if clientGone { - // TODO: could we also get into this state if - // the peer does a half close - // (e.g. CloseWrite) because they're done - // sending frames but they're still wanting - // our open replies? Investigate. - // TODO: add CloseWrite to crypto/tls.Conn first - // so we have a way to test this? I suppose - // just for testing we could have a non-TLS mode. - return false - } - } else { - f := res.f - if VerboseLogs { - sc.vlogf("http2: server read frame %v", summarizeFrame(f)) - } - err = sc.processFrame(f) - if err == nil { - return true - } - } - - switch ev := err.(type) { - case StreamError: - sc.resetStream(ev) - return true - case goAwayFlowError: - sc.goAway(ErrCodeFlowControl) - return true - case ConnectionError: - sc.logf("http2: server connection error from %v: %v", sc.conn.RemoteAddr(), ev) - sc.goAway(ErrCode(ev)) - return true // goAway will handle shutdown - default: - if res.err != nil { - sc.vlogf("http2: server closing client connection; error reading frame from client %s: %v", sc.conn.RemoteAddr(), err) - } else { - sc.logf("http2: server closing client connection: %v", err) - } - return false - } -} - -func (sc *serverConn) processFrame(f Frame) error { - sc.serveG.check() - - // First frame received must be SETTINGS. - if !sc.sawFirstSettings { - if _, ok := f.(*SettingsFrame); !ok { - return ConnectionError(ErrCodeProtocol) - } - sc.sawFirstSettings = true - } - - switch f := f.(type) { - case *SettingsFrame: - return sc.processSettings(f) - case *MetaHeadersFrame: - return sc.processHeaders(f) - case *WindowUpdateFrame: - return sc.processWindowUpdate(f) - case *PingFrame: - return sc.processPing(f) - case *DataFrame: - return sc.processData(f) - case *RSTStreamFrame: - return sc.processResetStream(f) - case *PriorityFrame: - return sc.processPriority(f) - case *PushPromiseFrame: - // A client cannot push. Thus, servers MUST treat the receipt of a PUSH_PROMISE - // frame as a connection error (Section 5.4.1) of type PROTOCOL_ERROR. - return ConnectionError(ErrCodeProtocol) - default: - sc.vlogf("http2: server ignoring frame: %v", f.Header()) - return nil - } -} - -func (sc *serverConn) processPing(f *PingFrame) error { - sc.serveG.check() - if f.IsAck() { - // 6.7 PING: " An endpoint MUST NOT respond to PING frames - // containing this flag." - return nil - } - if f.StreamID != 0 { - // "PING frames are not associated with any individual - // stream. If a PING frame is received with a stream - // identifier field value other than 0x0, the recipient MUST - // respond with a connection error (Section 5.4.1) of type - // PROTOCOL_ERROR." - return ConnectionError(ErrCodeProtocol) - } - sc.writeFrame(frameWriteMsg{write: writePingAck{f}}) - return nil -} - -func (sc *serverConn) processWindowUpdate(f *WindowUpdateFrame) error { - sc.serveG.check() - switch { - case f.StreamID != 0: // stream-level flow control - st := sc.streams[f.StreamID] - if st == nil { - // "WINDOW_UPDATE can be sent by a peer that has sent a - // frame bearing the END_STREAM flag. This means that a - // receiver could receive a WINDOW_UPDATE frame on a "half - // closed (remote)" or "closed" stream. A receiver MUST - // NOT treat this as an error, see Section 5.1." - return nil - } - if !st.flow.add(int32(f.Increment)) { - return streamError(f.StreamID, ErrCodeFlowControl) - } - default: // connection-level flow control - if !sc.flow.add(int32(f.Increment)) { - return goAwayFlowError{} - } - } - sc.scheduleFrameWrite() - return nil -} - -func (sc *serverConn) processResetStream(f *RSTStreamFrame) error { - sc.serveG.check() - - state, st := sc.state(f.StreamID) - if state == stateIdle { - // 6.4 "RST_STREAM frames MUST NOT be sent for a - // stream in the "idle" state. If a RST_STREAM frame - // identifying an idle stream is received, the - // recipient MUST treat this as a connection error - // (Section 5.4.1) of type PROTOCOL_ERROR. - return ConnectionError(ErrCodeProtocol) - } - if st != nil { - st.gotReset = true - st.cancelCtx() - sc.closeStream(st, streamError(f.StreamID, f.ErrCode)) - } - return nil -} - -func (sc *serverConn) closeStream(st *stream, err error) { - sc.serveG.check() - if st.state == stateIdle || st.state == stateClosed { - panic(fmt.Sprintf("invariant; can't close stream in state %v", st.state)) - } - st.state = stateClosed - sc.curOpenStreams-- - if sc.curOpenStreams == 0 { - sc.setConnState(http.StateIdle) - } - delete(sc.streams, st.id) - if p := st.body; p != nil { - // Return any buffered unread bytes worth of conn-level flow control. - // See golang.org/issue/16481 - sc.sendWindowUpdate(nil, p.Len()) - - p.CloseWithError(err) - } - st.cw.Close() // signals Handler's CloseNotifier, unblocks writes, etc - sc.writeSched.forgetStream(st.id) - if st.reqBuf != nil { - // Stash this request body buffer (64k) away for reuse - // by a future POST/PUT/etc. - // - // TODO(bradfitz): share on the server? sync.Pool? - // Server requires locks and might hurt contention. - // sync.Pool might work, or might be worse, depending - // on goroutine CPU migrations. (get and put on - // separate CPUs). Maybe a mix of strategies. But - // this is an easy win for now. - sc.freeRequestBodyBuf = st.reqBuf - } -} - -func (sc *serverConn) processSettings(f *SettingsFrame) error { - sc.serveG.check() - if f.IsAck() { - sc.unackedSettings-- - if sc.unackedSettings < 0 { - // Why is the peer ACKing settings we never sent? - // The spec doesn't mention this case, but - // hang up on them anyway. - return ConnectionError(ErrCodeProtocol) - } - return nil - } - if err := f.ForeachSetting(sc.processSetting); err != nil { - return err - } - sc.needToSendSettingsAck = true - sc.scheduleFrameWrite() - return nil -} - -func (sc *serverConn) processSetting(s Setting) error { - sc.serveG.check() - if err := s.Valid(); err != nil { - return err - } - if VerboseLogs { - sc.vlogf("http2: server processing setting %v", s) - } - switch s.ID { - case SettingHeaderTableSize: - sc.headerTableSize = s.Val - sc.hpackEncoder.SetMaxDynamicTableSize(s.Val) - case SettingEnablePush: - sc.pushEnabled = s.Val != 0 - case SettingMaxConcurrentStreams: - sc.clientMaxStreams = s.Val - case SettingInitialWindowSize: - return sc.processSettingInitialWindowSize(s.Val) - case SettingMaxFrameSize: - sc.writeSched.maxFrameSize = s.Val - case SettingMaxHeaderListSize: - sc.peerMaxHeaderListSize = s.Val - default: - // Unknown setting: "An endpoint that receives a SETTINGS - // frame with any unknown or unsupported identifier MUST - // ignore that setting." - if VerboseLogs { - sc.vlogf("http2: server ignoring unknown setting %v", s) - } - } - return nil -} - -func (sc *serverConn) processSettingInitialWindowSize(val uint32) error { - sc.serveG.check() - // Note: val already validated to be within range by - // processSetting's Valid call. - - // "A SETTINGS frame can alter the initial flow control window - // size for all current streams. When the value of - // SETTINGS_INITIAL_WINDOW_SIZE changes, a receiver MUST - // adjust the size of all stream flow control windows that it - // maintains by the difference between the new value and the - // old value." - old := sc.initialWindowSize - sc.initialWindowSize = int32(val) - growth := sc.initialWindowSize - old // may be negative - for _, st := range sc.streams { - if !st.flow.add(growth) { - // 6.9.2 Initial Flow Control Window Size - // "An endpoint MUST treat a change to - // SETTINGS_INITIAL_WINDOW_SIZE that causes any flow - // control window to exceed the maximum size as a - // connection error (Section 5.4.1) of type - // FLOW_CONTROL_ERROR." - return ConnectionError(ErrCodeFlowControl) - } - } - return nil -} - -func (sc *serverConn) processData(f *DataFrame) error { - sc.serveG.check() - data := f.Data() - - // "If a DATA frame is received whose stream is not in "open" - // or "half closed (local)" state, the recipient MUST respond - // with a stream error (Section 5.4.2) of type STREAM_CLOSED." - id := f.Header().StreamID - st, ok := sc.streams[id] - if !ok || st.state != stateOpen || st.gotTrailerHeader { - // This includes sending a RST_STREAM if the stream is - // in stateHalfClosedLocal (which currently means that - // the http.Handler returned, so it's done reading & - // done writing). Try to stop the client from sending - // more DATA. - - // But still enforce their connection-level flow control, - // and return any flow control bytes since we're not going - // to consume them. - if sc.inflow.available() < int32(f.Length) { - return streamError(id, ErrCodeFlowControl) - } - // Deduct the flow control from inflow, since we're - // going to immediately add it back in - // sendWindowUpdate, which also schedules sending the - // frames. - sc.inflow.take(int32(f.Length)) - sc.sendWindowUpdate(nil, int(f.Length)) // conn-level - - return streamError(id, ErrCodeStreamClosed) - } - if st.body == nil { - panic("internal error: should have a body in this state") - } - - // Sender sending more than they'd declared? - if st.declBodyBytes != -1 && st.bodyBytes+int64(len(data)) > st.declBodyBytes { - st.body.CloseWithError(fmt.Errorf("sender tried to send more than declared Content-Length of %d bytes", st.declBodyBytes)) - return streamError(id, ErrCodeStreamClosed) - } - if f.Length > 0 { - // Check whether the client has flow control quota. - if st.inflow.available() < int32(f.Length) { - return streamError(id, ErrCodeFlowControl) - } - st.inflow.take(int32(f.Length)) - - if len(data) > 0 { - wrote, err := st.body.Write(data) - if err != nil { - return streamError(id, ErrCodeStreamClosed) - } - if wrote != len(data) { - panic("internal error: bad Writer") - } - st.bodyBytes += int64(len(data)) - } - - // Return any padded flow control now, since we won't - // refund it later on body reads. - if pad := int32(f.Length) - int32(len(data)); pad > 0 { - sc.sendWindowUpdate32(nil, pad) - sc.sendWindowUpdate32(st, pad) - } - } - if f.StreamEnded() { - st.endStream() - } - return nil -} - -// endStream closes a Request.Body's pipe. It is called when a DATA -// frame says a request body is over (or after trailers). -func (st *stream) endStream() { - sc := st.sc - sc.serveG.check() - - if st.declBodyBytes != -1 && st.declBodyBytes != st.bodyBytes { - st.body.CloseWithError(fmt.Errorf("request declared a Content-Length of %d but only wrote %d bytes", - st.declBodyBytes, st.bodyBytes)) - } else { - st.body.closeWithErrorAndCode(io.EOF, st.copyTrailersToHandlerRequest) - st.body.CloseWithError(io.EOF) - } - st.state = stateHalfClosedRemote -} - -// copyTrailersToHandlerRequest is run in the Handler's goroutine in -// its Request.Body.Read just before it gets io.EOF. -func (st *stream) copyTrailersToHandlerRequest() { - for k, vv := range st.trailer { - if _, ok := st.reqTrailer[k]; ok { - // Only copy it over it was pre-declared. - st.reqTrailer[k] = vv - } - } -} - -func (sc *serverConn) processHeaders(f *MetaHeadersFrame) error { - sc.serveG.check() - id := f.Header().StreamID - if sc.inGoAway { - // Ignore. - return nil - } - // http://http2.github.io/http2-spec/#rfc.section.5.1.1 - // Streams initiated by a client MUST use odd-numbered stream - // identifiers. [...] An endpoint that receives an unexpected - // stream identifier MUST respond with a connection error - // (Section 5.4.1) of type PROTOCOL_ERROR. - if id%2 != 1 { - return ConnectionError(ErrCodeProtocol) - } - // A HEADERS frame can be used to create a new stream or - // send a trailer for an open one. If we already have a stream - // open, let it process its own HEADERS frame (trailers at this - // point, if it's valid). - st := sc.streams[f.Header().StreamID] - if st != nil { - return st.processTrailerHeaders(f) - } - - // [...] The identifier of a newly established stream MUST be - // numerically greater than all streams that the initiating - // endpoint has opened or reserved. [...] An endpoint that - // receives an unexpected stream identifier MUST respond with - // a connection error (Section 5.4.1) of type PROTOCOL_ERROR. - if id <= sc.maxStreamID { - return ConnectionError(ErrCodeProtocol) - } - sc.maxStreamID = id - - ctx, cancelCtx := contextWithCancel(sc.baseCtx) - st = &stream{ - sc: sc, - id: id, - state: stateOpen, - ctx: ctx, - cancelCtx: cancelCtx, - } - if f.StreamEnded() { - st.state = stateHalfClosedRemote - } - st.cw.Init() - - st.flow.conn = &sc.flow // link to conn-level counter - st.flow.add(sc.initialWindowSize) - st.inflow.conn = &sc.inflow // link to conn-level counter - st.inflow.add(initialWindowSize) // TODO: update this when we send a higher initial window size in the initial settings - - sc.streams[id] = st - if f.HasPriority() { - adjustStreamPriority(sc.streams, st.id, f.Priority) - } - sc.curOpenStreams++ - if sc.curOpenStreams == 1 { - sc.setConnState(http.StateActive) - } - if sc.curOpenStreams > sc.advMaxStreams { - // "Endpoints MUST NOT exceed the limit set by their - // peer. An endpoint that receives a HEADERS frame - // that causes their advertised concurrent stream - // limit to be exceeded MUST treat this as a stream - // error (Section 5.4.2) of type PROTOCOL_ERROR or - // REFUSED_STREAM." - if sc.unackedSettings == 0 { - // They should know better. - return streamError(st.id, ErrCodeProtocol) - } - // Assume it's a network race, where they just haven't - // received our last SETTINGS update. But actually - // this can't happen yet, because we don't yet provide - // a way for users to adjust server parameters at - // runtime. - return streamError(st.id, ErrCodeRefusedStream) - } - - rw, req, err := sc.newWriterAndRequest(st, f) - if err != nil { - return err - } - st.reqTrailer = req.Trailer - if st.reqTrailer != nil { - st.trailer = make(http.Header) - } - st.body = req.Body.(*requestBody).pipe // may be nil - st.declBodyBytes = req.ContentLength - - handler := sc.handler.ServeHTTP - if f.Truncated { - // Their header list was too long. Send a 431 error. - handler = handleHeaderListTooLong - } else if err := checkValidHTTP2Request(req); err != nil { - handler = new400Handler(err) - } - - go sc.runHandler(rw, req, handler) - return nil -} - -func (st *stream) processTrailerHeaders(f *MetaHeadersFrame) error { - sc := st.sc - sc.serveG.check() - if st.gotTrailerHeader { - return ConnectionError(ErrCodeProtocol) - } - st.gotTrailerHeader = true - if !f.StreamEnded() { - return streamError(st.id, ErrCodeProtocol) - } - - if len(f.PseudoFields()) > 0 { - return streamError(st.id, ErrCodeProtocol) - } - if st.trailer != nil { - for _, hf := range f.RegularFields() { - key := sc.canonicalHeader(hf.Name) - if !ValidTrailerHeader(key) { - // TODO: send more details to the peer somehow. But http2 has - // no way to send debug data at a stream level. Discuss with - // HTTP folk. - return streamError(st.id, ErrCodeProtocol) - } - st.trailer[key] = append(st.trailer[key], hf.Value) - } - } - st.endStream() - return nil -} - -func (sc *serverConn) processPriority(f *PriorityFrame) error { - adjustStreamPriority(sc.streams, f.StreamID, f.PriorityParam) - return nil -} - -func adjustStreamPriority(streams map[uint32]*stream, streamID uint32, priority PriorityParam) { - st, ok := streams[streamID] - if !ok { - // TODO: not quite correct (this streamID might - // already exist in the dep tree, but be closed), but - // close enough for now. - return - } - st.weight = priority.Weight - parent := streams[priority.StreamDep] // might be nil - if parent == st { - // if client tries to set this stream to be the parent of itself - // ignore and keep going - return - } - - // section 5.3.3: If a stream is made dependent on one of its - // own dependencies, the formerly dependent stream is first - // moved to be dependent on the reprioritized stream's previous - // parent. The moved dependency retains its weight. - for piter := parent; piter != nil; piter = piter.parent { - if piter == st { - parent.parent = st.parent - break - } - } - st.parent = parent - if priority.Exclusive && (st.parent != nil || priority.StreamDep == 0) { - for _, openStream := range streams { - if openStream != st && openStream.parent == st.parent { - openStream.parent = st - } - } - } -} - -func (sc *serverConn) newWriterAndRequest(st *stream, f *MetaHeadersFrame) (*responseWriter, *http.Request, error) { - sc.serveG.check() - - method := f.PseudoValue("method") - path := f.PseudoValue("path") - scheme := f.PseudoValue("scheme") - authority := f.PseudoValue("authority") - - isConnect := method == "CONNECT" - if isConnect { - if path != "" || scheme != "" || authority == "" { - return nil, nil, streamError(f.StreamID, ErrCodeProtocol) - } - } else if method == "" || path == "" || - (scheme != "https" && scheme != "http") { - // See 8.1.2.6 Malformed Requests and Responses: - // - // Malformed requests or responses that are detected - // MUST be treated as a stream error (Section 5.4.2) - // of type PROTOCOL_ERROR." - // - // 8.1.2.3 Request Pseudo-Header Fields - // "All HTTP/2 requests MUST include exactly one valid - // value for the :method, :scheme, and :path - // pseudo-header fields" - return nil, nil, streamError(f.StreamID, ErrCodeProtocol) - } - - bodyOpen := !f.StreamEnded() - if method == "HEAD" && bodyOpen { - // HEAD requests can't have bodies - return nil, nil, streamError(f.StreamID, ErrCodeProtocol) - } - var tlsState *tls.ConnectionState // nil if not scheme https - - if scheme == "https" { - tlsState = sc.tlsState - } - - header := make(http.Header) - for _, hf := range f.RegularFields() { - header.Add(sc.canonicalHeader(hf.Name), hf.Value) - } - - if authority == "" { - authority = header.Get("Host") - } - needsContinue := header.Get("Expect") == "100-continue" - if needsContinue { - header.Del("Expect") - } - // Merge Cookie headers into one "; "-delimited value. - if cookies := header["Cookie"]; len(cookies) > 1 { - header.Set("Cookie", strings.Join(cookies, "; ")) - } - - // Setup Trailers - var trailer http.Header - for _, v := range header["Trailer"] { - for _, key := range strings.Split(v, ",") { - key = http.CanonicalHeaderKey(strings.TrimSpace(key)) - switch key { - case "Transfer-Encoding", "Trailer", "Content-Length": - // Bogus. (copy of http1 rules) - // Ignore. - default: - if trailer == nil { - trailer = make(http.Header) - } - trailer[key] = nil - } - } - } - delete(header, "Trailer") - - body := &requestBody{ - conn: sc, - stream: st, - needsContinue: needsContinue, - } - var url_ *url.URL - var requestURI string - if isConnect { - url_ = &url.URL{Host: authority} - requestURI = authority // mimic HTTP/1 server behavior - } else { - var err error - url_, err = url.ParseRequestURI(path) - if err != nil { - return nil, nil, streamError(f.StreamID, ErrCodeProtocol) - } - requestURI = path - } - req := &http.Request{ - Method: method, - URL: url_, - RemoteAddr: sc.remoteAddrStr, - Header: header, - RequestURI: requestURI, - Proto: "HTTP/2.0", - ProtoMajor: 2, - ProtoMinor: 0, - TLS: tlsState, - Host: authority, - Body: body, - Trailer: trailer, - } - req = requestWithContext(req, st.ctx) - if bodyOpen { - // Disabled, per golang.org/issue/14960: - // st.reqBuf = sc.getRequestBodyBuf() - // TODO: remove this 64k of garbage per request (again, but without a data race): - buf := make([]byte, initialWindowSize) - - body.pipe = &pipe{ - b: &fixedBuffer{buf: buf}, - } - - if vv, ok := header["Content-Length"]; ok { - req.ContentLength, _ = strconv.ParseInt(vv[0], 10, 64) - } else { - req.ContentLength = -1 - } - } - - rws := responseWriterStatePool.Get().(*responseWriterState) - bwSave := rws.bw - *rws = responseWriterState{} // zero all the fields - rws.conn = sc - rws.bw = bwSave - rws.bw.Reset(chunkWriter{rws}) - rws.stream = st - rws.req = req - rws.body = body - - rw := &responseWriter{rws: rws} - return rw, req, nil -} - -func (sc *serverConn) getRequestBodyBuf() []byte { - sc.serveG.check() - if buf := sc.freeRequestBodyBuf; buf != nil { - sc.freeRequestBodyBuf = nil - return buf - } - return make([]byte, initialWindowSize) -} - -// Run on its own goroutine. -func (sc *serverConn) runHandler(rw *responseWriter, req *http.Request, handler func(http.ResponseWriter, *http.Request)) { - didPanic := true - defer func() { - rw.rws.stream.cancelCtx() - if didPanic { - e := recover() - // Same as net/http: - const size = 64 << 10 - buf := make([]byte, size) - buf = buf[:runtime.Stack(buf, false)] - sc.writeFrameFromHandler(frameWriteMsg{ - write: handlerPanicRST{rw.rws.stream.id}, - stream: rw.rws.stream, - }) - sc.logf("http2: panic serving %v: %v\n%s", sc.conn.RemoteAddr(), e, buf) - return - } - rw.handlerDone() - }() - handler(rw, req) - didPanic = false -} - -func handleHeaderListTooLong(w http.ResponseWriter, r *http.Request) { - // 10.5.1 Limits on Header Block Size: - // .. "A server that receives a larger header block than it is - // willing to handle can send an HTTP 431 (Request Header Fields Too - // Large) status code" - const statusRequestHeaderFieldsTooLarge = 431 // only in Go 1.6+ - w.WriteHeader(statusRequestHeaderFieldsTooLarge) - io.WriteString(w, "

HTTP Error 431

Request Header Field(s) Too Large

") -} - -// called from handler goroutines. -// h may be nil. -func (sc *serverConn) writeHeaders(st *stream, headerData *writeResHeaders) error { - sc.serveG.checkNotOn() // NOT on - var errc chan error - if headerData.h != nil { - // If there's a header map (which we don't own), so we have to block on - // waiting for this frame to be written, so an http.Flush mid-handler - // writes out the correct value of keys, before a handler later potentially - // mutates it. - errc = errChanPool.Get().(chan error) - } - if err := sc.writeFrameFromHandler(frameWriteMsg{ - write: headerData, - stream: st, - done: errc, - }); err != nil { - return err - } - if errc != nil { - select { - case err := <-errc: - errChanPool.Put(errc) - return err - case <-sc.doneServing: - return errClientDisconnected - case <-st.cw: - return errStreamClosed - } - } - return nil -} - -// called from handler goroutines. -func (sc *serverConn) write100ContinueHeaders(st *stream) { - sc.writeFrameFromHandler(frameWriteMsg{ - write: write100ContinueHeadersFrame{st.id}, - stream: st, - }) -} - -// A bodyReadMsg tells the server loop that the http.Handler read n -// bytes of the DATA from the client on the given stream. -type bodyReadMsg struct { - st *stream - n int -} - -// called from handler goroutines. -// Notes that the handler for the given stream ID read n bytes of its body -// and schedules flow control tokens to be sent. -func (sc *serverConn) noteBodyReadFromHandler(st *stream, n int) { - sc.serveG.checkNotOn() // NOT on - select { - case sc.bodyReadCh <- bodyReadMsg{st, n}: - case <-sc.doneServing: - } -} - -func (sc *serverConn) noteBodyRead(st *stream, n int) { - sc.serveG.check() - sc.sendWindowUpdate(nil, n) // conn-level - if st.state != stateHalfClosedRemote && st.state != stateClosed { - // Don't send this WINDOW_UPDATE if the stream is closed - // remotely. - sc.sendWindowUpdate(st, n) - } -} - -// st may be nil for conn-level -func (sc *serverConn) sendWindowUpdate(st *stream, n int) { - sc.serveG.check() - // "The legal range for the increment to the flow control - // window is 1 to 2^31-1 (2,147,483,647) octets." - // A Go Read call on 64-bit machines could in theory read - // a larger Read than this. Very unlikely, but we handle it here - // rather than elsewhere for now. - const maxUint31 = 1<<31 - 1 - for n >= maxUint31 { - sc.sendWindowUpdate32(st, maxUint31) - n -= maxUint31 - } - sc.sendWindowUpdate32(st, int32(n)) -} - -// st may be nil for conn-level -func (sc *serverConn) sendWindowUpdate32(st *stream, n int32) { - sc.serveG.check() - if n == 0 { - return - } - if n < 0 { - panic("negative update") - } - var streamID uint32 - if st != nil { - streamID = st.id - } - sc.writeFrame(frameWriteMsg{ - write: writeWindowUpdate{streamID: streamID, n: uint32(n)}, - stream: st, - }) - var ok bool - if st == nil { - ok = sc.inflow.add(n) - } else { - ok = st.inflow.add(n) - } - if !ok { - panic("internal error; sent too many window updates without decrements?") - } -} - -type requestBody struct { - stream *stream - conn *serverConn - closed bool - pipe *pipe // non-nil if we have a HTTP entity message body - needsContinue bool // need to send a 100-continue -} - -func (b *requestBody) Close() error { - if b.pipe != nil { - b.pipe.BreakWithError(errClosedBody) - } - b.closed = true - return nil -} - -func (b *requestBody) Read(p []byte) (n int, err error) { - if b.needsContinue { - b.needsContinue = false - b.conn.write100ContinueHeaders(b.stream) - } - if b.pipe == nil { - return 0, io.EOF - } - n, err = b.pipe.Read(p) - if n > 0 { - b.conn.noteBodyReadFromHandler(b.stream, n) - } - return -} - -// responseWriter is the http.ResponseWriter implementation. It's -// intentionally small (1 pointer wide) to minimize garbage. The -// responseWriterState pointer inside is zeroed at the end of a -// request (in handlerDone) and calls on the responseWriter thereafter -// simply crash (caller's mistake), but the much larger responseWriterState -// and buffers are reused between multiple requests. -type responseWriter struct { - rws *responseWriterState -} - -// Optional http.ResponseWriter interfaces implemented. -var ( - _ http.CloseNotifier = (*responseWriter)(nil) - _ http.Flusher = (*responseWriter)(nil) - _ stringWriter = (*responseWriter)(nil) -) - -type responseWriterState struct { - // immutable within a request: - stream *stream - req *http.Request - body *requestBody // to close at end of request, if DATA frames didn't - conn *serverConn - - // TODO: adjust buffer writing sizes based on server config, frame size updates from peer, etc - bw *bufio.Writer // writing to a chunkWriter{this *responseWriterState} - - // mutated by http.Handler goroutine: - handlerHeader http.Header // nil until called - snapHeader http.Header // snapshot of handlerHeader at WriteHeader time - trailers []string // set in writeChunk - status int // status code passed to WriteHeader - wroteHeader bool // WriteHeader called (explicitly or implicitly). Not necessarily sent to user yet. - sentHeader bool // have we sent the header frame? - handlerDone bool // handler has finished - - sentContentLen int64 // non-zero if handler set a Content-Length header - wroteBytes int64 - - closeNotifierMu sync.Mutex // guards closeNotifierCh - closeNotifierCh chan bool // nil until first used -} - -type chunkWriter struct{ rws *responseWriterState } - -func (cw chunkWriter) Write(p []byte) (n int, err error) { return cw.rws.writeChunk(p) } - -func (rws *responseWriterState) hasTrailers() bool { return len(rws.trailers) != 0 } - -// declareTrailer is called for each Trailer header when the -// response header is written. It notes that a header will need to be -// written in the trailers at the end of the response. -func (rws *responseWriterState) declareTrailer(k string) { - k = http.CanonicalHeaderKey(k) - if !ValidTrailerHeader(k) { - // Forbidden by RFC 2616 14.40. - rws.conn.logf("ignoring invalid trailer %q", k) - return - } - if !strSliceContains(rws.trailers, k) { - rws.trailers = append(rws.trailers, k) - } -} - -// writeChunk writes chunks from the bufio.Writer. But because -// bufio.Writer may bypass its chunking, sometimes p may be -// arbitrarily large. -// -// writeChunk is also responsible (on the first chunk) for sending the -// HEADER response. -func (rws *responseWriterState) writeChunk(p []byte) (n int, err error) { - if !rws.wroteHeader { - rws.writeHeader(200) - } - - isHeadResp := rws.req.Method == "HEAD" - if !rws.sentHeader { - rws.sentHeader = true - var ctype, clen string - if clen = rws.snapHeader.Get("Content-Length"); clen != "" { - rws.snapHeader.Del("Content-Length") - clen64, err := strconv.ParseInt(clen, 10, 64) - if err == nil && clen64 >= 0 { - rws.sentContentLen = clen64 - } else { - clen = "" - } - } - if clen == "" && rws.handlerDone && bodyAllowedForStatus(rws.status) && (len(p) > 0 || !isHeadResp) { - clen = strconv.Itoa(len(p)) - } - _, hasContentType := rws.snapHeader["Content-Type"] - if !hasContentType && bodyAllowedForStatus(rws.status) { - ctype = http.DetectContentType(p) - } - var date string - if _, ok := rws.snapHeader["Date"]; !ok { - // TODO(bradfitz): be faster here, like net/http? measure. - date = time.Now().UTC().Format(http.TimeFormat) - } - - for _, v := range rws.snapHeader["Trailer"] { - foreachHeaderElement(v, rws.declareTrailer) - } - - endStream := (rws.handlerDone && !rws.hasTrailers() && len(p) == 0) || isHeadResp - err = rws.conn.writeHeaders(rws.stream, &writeResHeaders{ - streamID: rws.stream.id, - httpResCode: rws.status, - h: rws.snapHeader, - endStream: endStream, - contentType: ctype, - contentLength: clen, - date: date, - }) - if err != nil { - return 0, err - } - if endStream { - return 0, nil - } - } - if isHeadResp { - return len(p), nil - } - if len(p) == 0 && !rws.handlerDone { - return 0, nil - } - - if rws.handlerDone { - rws.promoteUndeclaredTrailers() - } - - endStream := rws.handlerDone && !rws.hasTrailers() - if len(p) > 0 || endStream { - // only send a 0 byte DATA frame if we're ending the stream. - if err := rws.conn.writeDataFromHandler(rws.stream, p, endStream); err != nil { - return 0, err - } - } - - if rws.handlerDone && rws.hasTrailers() { - err = rws.conn.writeHeaders(rws.stream, &writeResHeaders{ - streamID: rws.stream.id, - h: rws.handlerHeader, - trailers: rws.trailers, - endStream: true, - }) - return len(p), err - } - return len(p), nil -} - -// TrailerPrefix is a magic prefix for ResponseWriter.Header map keys -// that, if present, signals that the map entry is actually for -// the response trailers, and not the response headers. The prefix -// is stripped after the ServeHTTP call finishes and the values are -// sent in the trailers. -// -// This mechanism is intended only for trailers that are not known -// prior to the headers being written. If the set of trailers is fixed -// or known before the header is written, the normal Go trailers mechanism -// is preferred: -// https://golang.org/pkg/net/http/#ResponseWriter -// https://golang.org/pkg/net/http/#example_ResponseWriter_trailers -const TrailerPrefix = "Trailer:" - -// promoteUndeclaredTrailers permits http.Handlers to set trailers -// after the header has already been flushed. Because the Go -// ResponseWriter interface has no way to set Trailers (only the -// Header), and because we didn't want to expand the ResponseWriter -// interface, and because nobody used trailers, and because RFC 2616 -// says you SHOULD (but not must) predeclare any trailers in the -// header, the official ResponseWriter rules said trailers in Go must -// be predeclared, and then we reuse the same ResponseWriter.Header() -// map to mean both Headers and Trailers. When it's time to write the -// Trailers, we pick out the fields of Headers that were declared as -// trailers. That worked for a while, until we found the first major -// user of Trailers in the wild: gRPC (using them only over http2), -// and gRPC libraries permit setting trailers mid-stream without -// predeclarnig them. So: change of plans. We still permit the old -// way, but we also permit this hack: if a Header() key begins with -// "Trailer:", the suffix of that key is a Trailer. Because ':' is an -// invalid token byte anyway, there is no ambiguity. (And it's already -// filtered out) It's mildly hacky, but not terrible. -// -// This method runs after the Handler is done and promotes any Header -// fields to be trailers. -func (rws *responseWriterState) promoteUndeclaredTrailers() { - for k, vv := range rws.handlerHeader { - if !strings.HasPrefix(k, TrailerPrefix) { - continue - } - trailerKey := strings.TrimPrefix(k, TrailerPrefix) - rws.declareTrailer(trailerKey) - rws.handlerHeader[http.CanonicalHeaderKey(trailerKey)] = vv - } - - if len(rws.trailers) > 1 { - sorter := sorterPool.Get().(*sorter) - sorter.SortStrings(rws.trailers) - sorterPool.Put(sorter) - } -} - -func (w *responseWriter) Flush() { - rws := w.rws - if rws == nil { - panic("Header called after Handler finished") - } - if rws.bw.Buffered() > 0 { - if err := rws.bw.Flush(); err != nil { - // Ignore the error. The frame writer already knows. - return - } - } else { - // The bufio.Writer won't call chunkWriter.Write - // (writeChunk with zero bytes, so we have to do it - // ourselves to force the HTTP response header and/or - // final DATA frame (with END_STREAM) to be sent. - rws.writeChunk(nil) - } -} - -func (w *responseWriter) CloseNotify() <-chan bool { - rws := w.rws - if rws == nil { - panic("CloseNotify called after Handler finished") - } - rws.closeNotifierMu.Lock() - ch := rws.closeNotifierCh - if ch == nil { - ch = make(chan bool, 1) - rws.closeNotifierCh = ch - go func() { - rws.stream.cw.Wait() // wait for close - ch <- true - }() - } - rws.closeNotifierMu.Unlock() - return ch -} - -func (w *responseWriter) Header() http.Header { - rws := w.rws - if rws == nil { - panic("Header called after Handler finished") - } - if rws.handlerHeader == nil { - rws.handlerHeader = make(http.Header) - } - return rws.handlerHeader -} - -func (w *responseWriter) WriteHeader(code int) { - rws := w.rws - if rws == nil { - panic("WriteHeader called after Handler finished") - } - rws.writeHeader(code) -} - -func (rws *responseWriterState) writeHeader(code int) { - if !rws.wroteHeader { - rws.wroteHeader = true - rws.status = code - if len(rws.handlerHeader) > 0 { - rws.snapHeader = cloneHeader(rws.handlerHeader) - } - } -} - -func cloneHeader(h http.Header) http.Header { - h2 := make(http.Header, len(h)) - for k, vv := range h { - vv2 := make([]string, len(vv)) - copy(vv2, vv) - h2[k] = vv2 - } - return h2 -} - -// The Life Of A Write is like this: -// -// * Handler calls w.Write or w.WriteString -> -// * -> rws.bw (*bufio.Writer) -> -// * (Handler migth call Flush) -// * -> chunkWriter{rws} -// * -> responseWriterState.writeChunk(p []byte) -// * -> responseWriterState.writeChunk (most of the magic; see comment there) -func (w *responseWriter) Write(p []byte) (n int, err error) { - return w.write(len(p), p, "") -} - -func (w *responseWriter) WriteString(s string) (n int, err error) { - return w.write(len(s), nil, s) -} - -// either dataB or dataS is non-zero. -func (w *responseWriter) write(lenData int, dataB []byte, dataS string) (n int, err error) { - rws := w.rws - if rws == nil { - panic("Write called after Handler finished") - } - if !rws.wroteHeader { - w.WriteHeader(200) - } - if !bodyAllowedForStatus(rws.status) { - return 0, http.ErrBodyNotAllowed - } - rws.wroteBytes += int64(len(dataB)) + int64(len(dataS)) // only one can be set - if rws.sentContentLen != 0 && rws.wroteBytes > rws.sentContentLen { - // TODO: send a RST_STREAM - return 0, errors.New("http2: handler wrote more than declared Content-Length") - } - - if dataB != nil { - return rws.bw.Write(dataB) - } else { - return rws.bw.WriteString(dataS) - } -} - -func (w *responseWriter) handlerDone() { - rws := w.rws - rws.handlerDone = true - w.Flush() - w.rws = nil - responseWriterStatePool.Put(rws) -} - -// foreachHeaderElement splits v according to the "#rule" construction -// in RFC 2616 section 2.1 and calls fn for each non-empty element. -func foreachHeaderElement(v string, fn func(string)) { - v = textproto.TrimString(v) - if v == "" { - return - } - if !strings.Contains(v, ",") { - fn(v) - return - } - for _, f := range strings.Split(v, ",") { - if f = textproto.TrimString(f); f != "" { - fn(f) - } - } -} - -// From http://httpwg.org/specs/rfc7540.html#rfc.section.8.1.2.2 -var connHeaders = []string{ - "Connection", - "Keep-Alive", - "Proxy-Connection", - "Transfer-Encoding", - "Upgrade", -} - -// checkValidHTTP2Request checks whether req is a valid HTTP/2 request, -// per RFC 7540 Section 8.1.2.2. -// The returned error is reported to users. -func checkValidHTTP2Request(req *http.Request) error { - for _, h := range connHeaders { - if _, ok := req.Header[h]; ok { - return fmt.Errorf("request header %q is not valid in HTTP/2", h) - } - } - te := req.Header["Te"] - if len(te) > 0 && (len(te) > 1 || (te[0] != "trailers" && te[0] != "")) { - return errors.New(`request header "TE" may only be "trailers" in HTTP/2`) - } - return nil -} - -func new400Handler(err error) http.HandlerFunc { - return func(w http.ResponseWriter, r *http.Request) { - http.Error(w, err.Error(), http.StatusBadRequest) - } -} - -// ValidTrailerHeader reports whether name is a valid header field name to appear -// in trailers. -// See: http://tools.ietf.org/html/rfc7230#section-4.1.2 -func ValidTrailerHeader(name string) bool { - name = http.CanonicalHeaderKey(name) - if strings.HasPrefix(name, "If-") || badTrailer[name] { - return false - } - return true -} - -var badTrailer = map[string]bool{ - "Authorization": true, - "Cache-Control": true, - "Connection": true, - "Content-Encoding": true, - "Content-Length": true, - "Content-Range": true, - "Content-Type": true, - "Expect": true, - "Host": true, - "Keep-Alive": true, - "Max-Forwards": true, - "Pragma": true, - "Proxy-Authenticate": true, - "Proxy-Authorization": true, - "Proxy-Connection": true, - "Range": true, - "Realm": true, - "Te": true, - "Trailer": true, - "Transfer-Encoding": true, - "Www-Authenticate": true, -} diff --git a/vendor/golang.org/x/net/http2/transport.go b/vendor/golang.org/x/net/http2/transport.go deleted file mode 100644 index bcd27ae64b..0000000000 --- a/vendor/golang.org/x/net/http2/transport.go +++ /dev/null @@ -1,1994 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Transport code. - -package http2 - -import ( - "bufio" - "bytes" - "compress/gzip" - "crypto/tls" - "errors" - "fmt" - "io" - "io/ioutil" - "log" - "math" - "net" - "net/http" - "sort" - "strconv" - "strings" - "sync" - "time" - - "golang.org/x/net/http2/hpack" - "golang.org/x/net/lex/httplex" -) - -const ( - // transportDefaultConnFlow is how many connection-level flow control - // tokens we give the server at start-up, past the default 64k. - transportDefaultConnFlow = 1 << 30 - - // transportDefaultStreamFlow is how many stream-level flow - // control tokens we announce to the peer, and how many bytes - // we buffer per stream. - transportDefaultStreamFlow = 4 << 20 - - // transportDefaultStreamMinRefresh is the minimum number of bytes we'll send - // a stream-level WINDOW_UPDATE for at a time. - transportDefaultStreamMinRefresh = 4 << 10 - - defaultUserAgent = "Go-http-client/2.0" -) - -// Transport is an HTTP/2 Transport. -// -// A Transport internally caches connections to servers. It is safe -// for concurrent use by multiple goroutines. -type Transport struct { - // DialTLS specifies an optional dial function for creating - // TLS connections for requests. - // - // If DialTLS is nil, tls.Dial is used. - // - // If the returned net.Conn has a ConnectionState method like tls.Conn, - // it will be used to set http.Response.TLS. - DialTLS func(network, addr string, cfg *tls.Config) (net.Conn, error) - - // TLSClientConfig specifies the TLS configuration to use with - // tls.Client. If nil, the default configuration is used. - TLSClientConfig *tls.Config - - // ConnPool optionally specifies an alternate connection pool to use. - // If nil, the default is used. - ConnPool ClientConnPool - - // DisableCompression, if true, prevents the Transport from - // requesting compression with an "Accept-Encoding: gzip" - // request header when the Request contains no existing - // Accept-Encoding value. If the Transport requests gzip on - // its own and gets a gzipped response, it's transparently - // decoded in the Response.Body. However, if the user - // explicitly requested gzip it is not automatically - // uncompressed. - DisableCompression bool - - // AllowHTTP, if true, permits HTTP/2 requests using the insecure, - // plain-text "http" scheme. Note that this does not enable h2c support. - AllowHTTP bool - - // MaxHeaderListSize is the http2 SETTINGS_MAX_HEADER_LIST_SIZE to - // send in the initial settings frame. It is how many bytes - // of response headers are allow. Unlike the http2 spec, zero here - // means to use a default limit (currently 10MB). If you actually - // want to advertise an ulimited value to the peer, Transport - // interprets the highest possible value here (0xffffffff or 1<<32-1) - // to mean no limit. - MaxHeaderListSize uint32 - - // t1, if non-nil, is the standard library Transport using - // this transport. Its settings are used (but not its - // RoundTrip method, etc). - t1 *http.Transport - - connPoolOnce sync.Once - connPoolOrDef ClientConnPool // non-nil version of ConnPool -} - -func (t *Transport) maxHeaderListSize() uint32 { - if t.MaxHeaderListSize == 0 { - return 10 << 20 - } - if t.MaxHeaderListSize == 0xffffffff { - return 0 - } - return t.MaxHeaderListSize -} - -func (t *Transport) disableCompression() bool { - return t.DisableCompression || (t.t1 != nil && t.t1.DisableCompression) -} - -var errTransportVersion = errors.New("http2: ConfigureTransport is only supported starting at Go 1.6") - -// ConfigureTransport configures a net/http HTTP/1 Transport to use HTTP/2. -// It requires Go 1.6 or later and returns an error if the net/http package is too old -// or if t1 has already been HTTP/2-enabled. -func ConfigureTransport(t1 *http.Transport) error { - _, err := configureTransport(t1) // in configure_transport.go (go1.6) or not_go16.go - return err -} - -func (t *Transport) connPool() ClientConnPool { - t.connPoolOnce.Do(t.initConnPool) - return t.connPoolOrDef -} - -func (t *Transport) initConnPool() { - if t.ConnPool != nil { - t.connPoolOrDef = t.ConnPool - } else { - t.connPoolOrDef = &clientConnPool{t: t} - } -} - -// ClientConn is the state of a single HTTP/2 client connection to an -// HTTP/2 server. -type ClientConn struct { - t *Transport - tconn net.Conn // usually *tls.Conn, except specialized impls - tlsState *tls.ConnectionState // nil only for specialized impls - singleUse bool // whether being used for a single http.Request - - // readLoop goroutine fields: - readerDone chan struct{} // closed on error - readerErr error // set before readerDone is closed - - mu sync.Mutex // guards following - cond *sync.Cond // hold mu; broadcast on flow/closed changes - flow flow // our conn-level flow control quota (cs.flow is per stream) - inflow flow // peer's conn-level flow control - closed bool - wantSettingsAck bool // we sent a SETTINGS frame and haven't heard back - goAway *GoAwayFrame // if non-nil, the GoAwayFrame we received - goAwayDebug string // goAway frame's debug data, retained as a string - streams map[uint32]*clientStream // client-initiated - nextStreamID uint32 - bw *bufio.Writer - br *bufio.Reader - fr *Framer - lastActive time.Time - // Settings from peer: (also guarded by mu) - maxFrameSize uint32 - maxConcurrentStreams uint32 - initialWindowSize uint32 - - hbuf bytes.Buffer // HPACK encoder writes into this - henc *hpack.Encoder - freeBuf [][]byte - - wmu sync.Mutex // held while writing; acquire AFTER mu if holding both - werr error // first write error that has occurred -} - -// clientStream is the state for a single HTTP/2 stream. One of these -// is created for each Transport.RoundTrip call. -type clientStream struct { - cc *ClientConn - req *http.Request - trace *clientTrace // or nil - ID uint32 - resc chan resAndError - bufPipe pipe // buffered pipe with the flow-controlled response payload - requestedGzip bool - on100 func() // optional code to run if get a 100 continue response - - flow flow // guarded by cc.mu - inflow flow // guarded by cc.mu - bytesRemain int64 // -1 means unknown; owned by transportResponseBody.Read - readErr error // sticky read error; owned by transportResponseBody.Read - stopReqBody error // if non-nil, stop writing req body; guarded by cc.mu - - peerReset chan struct{} // closed on peer reset - resetErr error // populated before peerReset is closed - - done chan struct{} // closed when stream remove from cc.streams map; close calls guarded by cc.mu - - // owned by clientConnReadLoop: - firstByte bool // got the first response byte - pastHeaders bool // got first MetaHeadersFrame (actual headers) - pastTrailers bool // got optional second MetaHeadersFrame (trailers) - - trailer http.Header // accumulated trailers - resTrailer *http.Header // client's Response.Trailer -} - -// awaitRequestCancel runs in its own goroutine and waits for the user -// to cancel a RoundTrip request, its context to expire, or for the -// request to be done (any way it might be removed from the cc.streams -// map: peer reset, successful completion, TCP connection breakage, -// etc) -func (cs *clientStream) awaitRequestCancel(req *http.Request) { - ctx := reqContext(req) - if req.Cancel == nil && ctx.Done() == nil { - return - } - select { - case <-req.Cancel: - cs.bufPipe.CloseWithError(errRequestCanceled) - cs.cc.writeStreamReset(cs.ID, ErrCodeCancel, nil) - case <-ctx.Done(): - cs.bufPipe.CloseWithError(ctx.Err()) - cs.cc.writeStreamReset(cs.ID, ErrCodeCancel, nil) - case <-cs.done: - } -} - -// checkResetOrDone reports any error sent in a RST_STREAM frame by the -// server, or errStreamClosed if the stream is complete. -func (cs *clientStream) checkResetOrDone() error { - select { - case <-cs.peerReset: - return cs.resetErr - case <-cs.done: - return errStreamClosed - default: - return nil - } -} - -func (cs *clientStream) abortRequestBodyWrite(err error) { - if err == nil { - panic("nil error") - } - cc := cs.cc - cc.mu.Lock() - cs.stopReqBody = err - cc.cond.Broadcast() - cc.mu.Unlock() -} - -type stickyErrWriter struct { - w io.Writer - err *error -} - -func (sew stickyErrWriter) Write(p []byte) (n int, err error) { - if *sew.err != nil { - return 0, *sew.err - } - n, err = sew.w.Write(p) - *sew.err = err - return -} - -var ErrNoCachedConn = errors.New("http2: no cached connection was available") - -// RoundTripOpt are options for the Transport.RoundTripOpt method. -type RoundTripOpt struct { - // OnlyCachedConn controls whether RoundTripOpt may - // create a new TCP connection. If set true and - // no cached connection is available, RoundTripOpt - // will return ErrNoCachedConn. - OnlyCachedConn bool -} - -func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) { - return t.RoundTripOpt(req, RoundTripOpt{}) -} - -// authorityAddr returns a given authority (a host/IP, or host:port / ip:port) -// and returns a host:port. The port 443 is added if needed. -func authorityAddr(scheme string, authority string) (addr string) { - if _, _, err := net.SplitHostPort(authority); err == nil { - return authority - } - port := "443" - if scheme == "http" { - port = "80" - } - return net.JoinHostPort(authority, port) -} - -// RoundTripOpt is like RoundTrip, but takes options. -func (t *Transport) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Response, error) { - if !(req.URL.Scheme == "https" || (req.URL.Scheme == "http" && t.AllowHTTP)) { - return nil, errors.New("http2: unsupported scheme") - } - - addr := authorityAddr(req.URL.Scheme, req.URL.Host) - for { - cc, err := t.connPool().GetClientConn(req, addr) - if err != nil { - t.vlogf("http2: Transport failed to get client conn for %s: %v", addr, err) - return nil, err - } - traceGotConn(req, cc) - res, err := cc.RoundTrip(req) - if shouldRetryRequest(req, err) { - continue - } - if err != nil { - t.vlogf("RoundTrip failure: %v", err) - return nil, err - } - return res, nil - } -} - -// CloseIdleConnections closes any connections which were previously -// connected from previous requests but are now sitting idle. -// It does not interrupt any connections currently in use. -func (t *Transport) CloseIdleConnections() { - if cp, ok := t.connPool().(clientConnPoolIdleCloser); ok { - cp.closeIdleConnections() - } -} - -var ( - errClientConnClosed = errors.New("http2: client conn is closed") - errClientConnUnusable = errors.New("http2: client conn not usable") -) - -func shouldRetryRequest(req *http.Request, err error) bool { - // TODO: retry GET requests (no bodies) more aggressively, if shutdown - // before response. - return err == errClientConnUnusable -} - -func (t *Transport) dialClientConn(addr string, singleUse bool) (*ClientConn, error) { - host, _, err := net.SplitHostPort(addr) - if err != nil { - return nil, err - } - tconn, err := t.dialTLS()("tcp", addr, t.newTLSConfig(host)) - if err != nil { - return nil, err - } - return t.newClientConn(tconn, singleUse) -} - -func (t *Transport) newTLSConfig(host string) *tls.Config { - cfg := new(tls.Config) - if t.TLSClientConfig != nil { - *cfg = *t.TLSClientConfig - } - if !strSliceContains(cfg.NextProtos, NextProtoTLS) { - cfg.NextProtos = append([]string{NextProtoTLS}, cfg.NextProtos...) - } - if cfg.ServerName == "" { - cfg.ServerName = host - } - return cfg -} - -func (t *Transport) dialTLS() func(string, string, *tls.Config) (net.Conn, error) { - if t.DialTLS != nil { - return t.DialTLS - } - return t.dialTLSDefault -} - -func (t *Transport) dialTLSDefault(network, addr string, cfg *tls.Config) (net.Conn, error) { - cn, err := tls.Dial(network, addr, cfg) - if err != nil { - return nil, err - } - if err := cn.Handshake(); err != nil { - return nil, err - } - if !cfg.InsecureSkipVerify { - if err := cn.VerifyHostname(cfg.ServerName); err != nil { - return nil, err - } - } - state := cn.ConnectionState() - if p := state.NegotiatedProtocol; p != NextProtoTLS { - return nil, fmt.Errorf("http2: unexpected ALPN protocol %q; want %q", p, NextProtoTLS) - } - if !state.NegotiatedProtocolIsMutual { - return nil, errors.New("http2: could not negotiate protocol mutually") - } - return cn, nil -} - -// disableKeepAlives reports whether connections should be closed as -// soon as possible after handling the first request. -func (t *Transport) disableKeepAlives() bool { - return t.t1 != nil && t.t1.DisableKeepAlives -} - -func (t *Transport) expectContinueTimeout() time.Duration { - if t.t1 == nil { - return 0 - } - return transportExpectContinueTimeout(t.t1) -} - -func (t *Transport) NewClientConn(c net.Conn) (*ClientConn, error) { - return t.newClientConn(c, false) -} - -func (t *Transport) newClientConn(c net.Conn, singleUse bool) (*ClientConn, error) { - cc := &ClientConn{ - t: t, - tconn: c, - readerDone: make(chan struct{}), - nextStreamID: 1, - maxFrameSize: 16 << 10, // spec default - initialWindowSize: 65535, // spec default - maxConcurrentStreams: 1000, // "infinite", per spec. 1000 seems good enough. - streams: make(map[uint32]*clientStream), - singleUse: singleUse, - wantSettingsAck: true, - } - if VerboseLogs { - t.vlogf("http2: Transport creating client conn %p to %v", cc, c.RemoteAddr()) - } - - cc.cond = sync.NewCond(&cc.mu) - cc.flow.add(int32(initialWindowSize)) - - // TODO: adjust this writer size to account for frame size + - // MTU + crypto/tls record padding. - cc.bw = bufio.NewWriter(stickyErrWriter{c, &cc.werr}) - cc.br = bufio.NewReader(c) - cc.fr = NewFramer(cc.bw, cc.br) - cc.fr.ReadMetaHeaders = hpack.NewDecoder(initialHeaderTableSize, nil) - cc.fr.MaxHeaderListSize = t.maxHeaderListSize() - - // TODO: SetMaxDynamicTableSize, SetMaxDynamicTableSizeLimit on - // henc in response to SETTINGS frames? - cc.henc = hpack.NewEncoder(&cc.hbuf) - - if cs, ok := c.(connectionStater); ok { - state := cs.ConnectionState() - cc.tlsState = &state - } - - initialSettings := []Setting{ - {ID: SettingEnablePush, Val: 0}, - {ID: SettingInitialWindowSize, Val: transportDefaultStreamFlow}, - } - if max := t.maxHeaderListSize(); max != 0 { - initialSettings = append(initialSettings, Setting{ID: SettingMaxHeaderListSize, Val: max}) - } - - cc.bw.Write(clientPreface) - cc.fr.WriteSettings(initialSettings...) - cc.fr.WriteWindowUpdate(0, transportDefaultConnFlow) - cc.inflow.add(transportDefaultConnFlow + initialWindowSize) - cc.bw.Flush() - if cc.werr != nil { - return nil, cc.werr - } - - go cc.readLoop() - return cc, nil -} - -func (cc *ClientConn) setGoAway(f *GoAwayFrame) { - cc.mu.Lock() - defer cc.mu.Unlock() - - old := cc.goAway - cc.goAway = f - - // Merge the previous and current GoAway error frames. - if cc.goAwayDebug == "" { - cc.goAwayDebug = string(f.DebugData()) - } - if old != nil && old.ErrCode != ErrCodeNo { - cc.goAway.ErrCode = old.ErrCode - } -} - -func (cc *ClientConn) CanTakeNewRequest() bool { - cc.mu.Lock() - defer cc.mu.Unlock() - return cc.canTakeNewRequestLocked() -} - -func (cc *ClientConn) canTakeNewRequestLocked() bool { - if cc.singleUse && cc.nextStreamID > 1 { - return false - } - return cc.goAway == nil && !cc.closed && - int64(len(cc.streams)+1) < int64(cc.maxConcurrentStreams) && - cc.nextStreamID < math.MaxInt32 -} - -func (cc *ClientConn) closeIfIdle() { - cc.mu.Lock() - if len(cc.streams) > 0 { - cc.mu.Unlock() - return - } - cc.closed = true - nextID := cc.nextStreamID - // TODO: do clients send GOAWAY too? maybe? Just Close: - cc.mu.Unlock() - - if VerboseLogs { - cc.vlogf("http2: Transport closing idle conn %p (forSingleUse=%v, maxStream=%v)", cc, cc.singleUse, nextID-2) - } - cc.tconn.Close() -} - -const maxAllocFrameSize = 512 << 10 - -// frameBuffer returns a scratch buffer suitable for writing DATA frames. -// They're capped at the min of the peer's max frame size or 512KB -// (kinda arbitrarily), but definitely capped so we don't allocate 4GB -// bufers. -func (cc *ClientConn) frameScratchBuffer() []byte { - cc.mu.Lock() - size := cc.maxFrameSize - if size > maxAllocFrameSize { - size = maxAllocFrameSize - } - for i, buf := range cc.freeBuf { - if len(buf) >= int(size) { - cc.freeBuf[i] = nil - cc.mu.Unlock() - return buf[:size] - } - } - cc.mu.Unlock() - return make([]byte, size) -} - -func (cc *ClientConn) putFrameScratchBuffer(buf []byte) { - cc.mu.Lock() - defer cc.mu.Unlock() - const maxBufs = 4 // arbitrary; 4 concurrent requests per conn? investigate. - if len(cc.freeBuf) < maxBufs { - cc.freeBuf = append(cc.freeBuf, buf) - return - } - for i, old := range cc.freeBuf { - if old == nil { - cc.freeBuf[i] = buf - return - } - } - // forget about it. -} - -// errRequestCanceled is a copy of net/http's errRequestCanceled because it's not -// exported. At least they'll be DeepEqual for h1-vs-h2 comparisons tests. -var errRequestCanceled = errors.New("net/http: request canceled") - -func commaSeparatedTrailers(req *http.Request) (string, error) { - keys := make([]string, 0, len(req.Trailer)) - for k := range req.Trailer { - k = http.CanonicalHeaderKey(k) - switch k { - case "Transfer-Encoding", "Trailer", "Content-Length": - return "", &badStringError{"invalid Trailer key", k} - } - keys = append(keys, k) - } - if len(keys) > 0 { - sort.Strings(keys) - // TODO: could do better allocation-wise here, but trailers are rare, - // so being lazy for now. - return strings.Join(keys, ","), nil - } - return "", nil -} - -func (cc *ClientConn) responseHeaderTimeout() time.Duration { - if cc.t.t1 != nil { - return cc.t.t1.ResponseHeaderTimeout - } - // No way to do this (yet?) with just an http2.Transport. Probably - // no need. Request.Cancel this is the new way. We only need to support - // this for compatibility with the old http.Transport fields when - // we're doing transparent http2. - return 0 -} - -// checkConnHeaders checks whether req has any invalid connection-level headers. -// per RFC 7540 section 8.1.2.2: Connection-Specific Header Fields. -// Certain headers are special-cased as okay but not transmitted later. -func checkConnHeaders(req *http.Request) error { - if v := req.Header.Get("Upgrade"); v != "" { - return errors.New("http2: invalid Upgrade request header") - } - if v := req.Header.Get("Transfer-Encoding"); (v != "" && v != "chunked") || len(req.Header["Transfer-Encoding"]) > 1 { - return errors.New("http2: invalid Transfer-Encoding request header") - } - if v := req.Header.Get("Connection"); (v != "" && v != "close" && v != "keep-alive") || len(req.Header["Connection"]) > 1 { - return errors.New("http2: invalid Connection request header") - } - return nil -} - -func bodyAndLength(req *http.Request) (body io.Reader, contentLen int64) { - body = req.Body - if body == nil { - return nil, 0 - } - if req.ContentLength != 0 { - return req.Body, req.ContentLength - } - - // We have a body but a zero content length. Test to see if - // it's actually zero or just unset. - var buf [1]byte - n, rerr := body.Read(buf[:]) - if rerr != nil && rerr != io.EOF { - return errorReader{rerr}, -1 - } - if n == 1 { - // Oh, guess there is data in this Body Reader after all. - // The ContentLength field just wasn't set. - // Stitch the Body back together again, re-attaching our - // consumed byte. - if rerr == io.EOF { - return bytes.NewReader(buf[:]), 1 - } - return io.MultiReader(bytes.NewReader(buf[:]), body), -1 - } - // Body is actually zero bytes. - return nil, 0 -} - -func (cc *ClientConn) RoundTrip(req *http.Request) (*http.Response, error) { - if err := checkConnHeaders(req); err != nil { - return nil, err - } - - trailers, err := commaSeparatedTrailers(req) - if err != nil { - return nil, err - } - hasTrailers := trailers != "" - - body, contentLen := bodyAndLength(req) - hasBody := body != nil - - cc.mu.Lock() - cc.lastActive = time.Now() - if cc.closed || !cc.canTakeNewRequestLocked() { - cc.mu.Unlock() - return nil, errClientConnUnusable - } - - // TODO(bradfitz): this is a copy of the logic in net/http. Unify somewhere? - var requestedGzip bool - if !cc.t.disableCompression() && - req.Header.Get("Accept-Encoding") == "" && - req.Header.Get("Range") == "" && - req.Method != "HEAD" { - // Request gzip only, not deflate. Deflate is ambiguous and - // not as universally supported anyway. - // See: http://www.gzip.org/zlib/zlib_faq.html#faq38 - // - // Note that we don't request this for HEAD requests, - // due to a bug in nginx: - // http://trac.nginx.org/nginx/ticket/358 - // https://golang.org/issue/5522 - // - // We don't request gzip if the request is for a range, since - // auto-decoding a portion of a gzipped document will just fail - // anyway. See https://golang.org/issue/8923 - requestedGzip = true - } - - // we send: HEADERS{1}, CONTINUATION{0,} + DATA{0,} (DATA is - // sent by writeRequestBody below, along with any Trailers, - // again in form HEADERS{1}, CONTINUATION{0,}) - hdrs, err := cc.encodeHeaders(req, requestedGzip, trailers, contentLen) - if err != nil { - cc.mu.Unlock() - return nil, err - } - - cs := cc.newStream() - cs.req = req - cs.trace = requestTrace(req) - cs.requestedGzip = requestedGzip - bodyWriter := cc.t.getBodyWriterState(cs, body) - cs.on100 = bodyWriter.on100 - - cc.wmu.Lock() - endStream := !hasBody && !hasTrailers - werr := cc.writeHeaders(cs.ID, endStream, hdrs) - cc.wmu.Unlock() - traceWroteHeaders(cs.trace) - cc.mu.Unlock() - - if werr != nil { - if hasBody { - req.Body.Close() // per RoundTripper contract - bodyWriter.cancel() - } - cc.forgetStreamID(cs.ID) - // Don't bother sending a RST_STREAM (our write already failed; - // no need to keep writing) - traceWroteRequest(cs.trace, werr) - return nil, werr - } - - var respHeaderTimer <-chan time.Time - if hasBody { - bodyWriter.scheduleBodyWrite() - } else { - traceWroteRequest(cs.trace, nil) - if d := cc.responseHeaderTimeout(); d != 0 { - timer := time.NewTimer(d) - defer timer.Stop() - respHeaderTimer = timer.C - } - } - - readLoopResCh := cs.resc - bodyWritten := false - ctx := reqContext(req) - - handleReadLoopResponse := func(re resAndError) (*http.Response, error) { - res := re.res - if re.err != nil || res.StatusCode > 299 { - // On error or status code 3xx, 4xx, 5xx, etc abort any - // ongoing write, assuming that the server doesn't care - // about our request body. If the server replied with 1xx or - // 2xx, however, then assume the server DOES potentially - // want our body (e.g. full-duplex streaming: - // golang.org/issue/13444). If it turns out the server - // doesn't, they'll RST_STREAM us soon enough. This is a - // heuristic to avoid adding knobs to Transport. Hopefully - // we can keep it. - bodyWriter.cancel() - cs.abortRequestBodyWrite(errStopReqBodyWrite) - } - if re.err != nil { - cc.forgetStreamID(cs.ID) - return nil, re.err - } - res.Request = req - res.TLS = cc.tlsState - return res, nil - } - - for { - select { - case re := <-readLoopResCh: - return handleReadLoopResponse(re) - case <-respHeaderTimer: - cc.forgetStreamID(cs.ID) - if !hasBody || bodyWritten { - cc.writeStreamReset(cs.ID, ErrCodeCancel, nil) - } else { - bodyWriter.cancel() - cs.abortRequestBodyWrite(errStopReqBodyWriteAndCancel) - } - return nil, errTimeout - case <-ctx.Done(): - cc.forgetStreamID(cs.ID) - if !hasBody || bodyWritten { - cc.writeStreamReset(cs.ID, ErrCodeCancel, nil) - } else { - bodyWriter.cancel() - cs.abortRequestBodyWrite(errStopReqBodyWriteAndCancel) - } - return nil, ctx.Err() - case <-req.Cancel: - cc.forgetStreamID(cs.ID) - if !hasBody || bodyWritten { - cc.writeStreamReset(cs.ID, ErrCodeCancel, nil) - } else { - bodyWriter.cancel() - cs.abortRequestBodyWrite(errStopReqBodyWriteAndCancel) - } - return nil, errRequestCanceled - case <-cs.peerReset: - // processResetStream already removed the - // stream from the streams map; no need for - // forgetStreamID. - return nil, cs.resetErr - case err := <-bodyWriter.resc: - // Prefer the read loop's response, if available. Issue 16102. - select { - case re := <-readLoopResCh: - return handleReadLoopResponse(re) - default: - } - if err != nil { - return nil, err - } - bodyWritten = true - if d := cc.responseHeaderTimeout(); d != 0 { - timer := time.NewTimer(d) - defer timer.Stop() - respHeaderTimer = timer.C - } - } - } -} - -// requires cc.wmu be held -func (cc *ClientConn) writeHeaders(streamID uint32, endStream bool, hdrs []byte) error { - first := true // first frame written (HEADERS is first, then CONTINUATION) - frameSize := int(cc.maxFrameSize) - for len(hdrs) > 0 && cc.werr == nil { - chunk := hdrs - if len(chunk) > frameSize { - chunk = chunk[:frameSize] - } - hdrs = hdrs[len(chunk):] - endHeaders := len(hdrs) == 0 - if first { - cc.fr.WriteHeaders(HeadersFrameParam{ - StreamID: streamID, - BlockFragment: chunk, - EndStream: endStream, - EndHeaders: endHeaders, - }) - first = false - } else { - cc.fr.WriteContinuation(streamID, endHeaders, chunk) - } - } - // TODO(bradfitz): this Flush could potentially block (as - // could the WriteHeaders call(s) above), which means they - // wouldn't respond to Request.Cancel being readable. That's - // rare, but this should probably be in a goroutine. - cc.bw.Flush() - return cc.werr -} - -// internal error values; they don't escape to callers -var ( - // abort request body write; don't send cancel - errStopReqBodyWrite = errors.New("http2: aborting request body write") - - // abort request body write, but send stream reset of cancel. - errStopReqBodyWriteAndCancel = errors.New("http2: canceling request") -) - -func (cs *clientStream) writeRequestBody(body io.Reader, bodyCloser io.Closer) (err error) { - cc := cs.cc - sentEnd := false // whether we sent the final DATA frame w/ END_STREAM - buf := cc.frameScratchBuffer() - defer cc.putFrameScratchBuffer(buf) - - defer func() { - traceWroteRequest(cs.trace, err) - // TODO: write h12Compare test showing whether - // Request.Body is closed by the Transport, - // and in multiple cases: server replies <=299 and >299 - // while still writing request body - cerr := bodyCloser.Close() - if err == nil { - err = cerr - } - }() - - req := cs.req - hasTrailers := req.Trailer != nil - - var sawEOF bool - for !sawEOF { - n, err := body.Read(buf) - if err == io.EOF { - sawEOF = true - err = nil - } else if err != nil { - return err - } - - remain := buf[:n] - for len(remain) > 0 && err == nil { - var allowed int32 - allowed, err = cs.awaitFlowControl(len(remain)) - switch { - case err == errStopReqBodyWrite: - return err - case err == errStopReqBodyWriteAndCancel: - cc.writeStreamReset(cs.ID, ErrCodeCancel, nil) - return err - case err != nil: - return err - } - cc.wmu.Lock() - data := remain[:allowed] - remain = remain[allowed:] - sentEnd = sawEOF && len(remain) == 0 && !hasTrailers - err = cc.fr.WriteData(cs.ID, sentEnd, data) - if err == nil { - // TODO(bradfitz): this flush is for latency, not bandwidth. - // Most requests won't need this. Make this opt-in or - // opt-out? Use some heuristic on the body type? Nagel-like - // timers? Based on 'n'? Only last chunk of this for loop, - // unless flow control tokens are low? For now, always. - // If we change this, see comment below. - err = cc.bw.Flush() - } - cc.wmu.Unlock() - } - if err != nil { - return err - } - } - - if sentEnd { - // Already sent END_STREAM (which implies we have no - // trailers) and flushed, because currently all - // WriteData frames above get a flush. So we're done. - return nil - } - - var trls []byte - if hasTrailers { - cc.mu.Lock() - defer cc.mu.Unlock() - trls = cc.encodeTrailers(req) - } - - cc.wmu.Lock() - defer cc.wmu.Unlock() - - // Two ways to send END_STREAM: either with trailers, or - // with an empty DATA frame. - if len(trls) > 0 { - err = cc.writeHeaders(cs.ID, true, trls) - } else { - err = cc.fr.WriteData(cs.ID, true, nil) - } - if ferr := cc.bw.Flush(); ferr != nil && err == nil { - err = ferr - } - return err -} - -// awaitFlowControl waits for [1, min(maxBytes, cc.cs.maxFrameSize)] flow -// control tokens from the server. -// It returns either the non-zero number of tokens taken or an error -// if the stream is dead. -func (cs *clientStream) awaitFlowControl(maxBytes int) (taken int32, err error) { - cc := cs.cc - cc.mu.Lock() - defer cc.mu.Unlock() - for { - if cc.closed { - return 0, errClientConnClosed - } - if cs.stopReqBody != nil { - return 0, cs.stopReqBody - } - if err := cs.checkResetOrDone(); err != nil { - return 0, err - } - if a := cs.flow.available(); a > 0 { - take := a - if int(take) > maxBytes { - - take = int32(maxBytes) // can't truncate int; take is int32 - } - if take > int32(cc.maxFrameSize) { - take = int32(cc.maxFrameSize) - } - cs.flow.take(take) - return take, nil - } - cc.cond.Wait() - } -} - -type badStringError struct { - what string - str string -} - -func (e *badStringError) Error() string { return fmt.Sprintf("%s %q", e.what, e.str) } - -// requires cc.mu be held. -func (cc *ClientConn) encodeHeaders(req *http.Request, addGzipHeader bool, trailers string, contentLength int64) ([]byte, error) { - cc.hbuf.Reset() - - host := req.Host - if host == "" { - host = req.URL.Host - } - - var path string - if req.Method != "CONNECT" { - path = req.URL.RequestURI() - if !validPseudoPath(path) { - orig := path - path = strings.TrimPrefix(path, req.URL.Scheme+"://"+host) - if !validPseudoPath(path) { - if req.URL.Opaque != "" { - return nil, fmt.Errorf("invalid request :path %q from URL.Opaque = %q", orig, req.URL.Opaque) - } else { - return nil, fmt.Errorf("invalid request :path %q", orig) - } - } - } - } - - // Check for any invalid headers and return an error before we - // potentially pollute our hpack state. (We want to be able to - // continue to reuse the hpack encoder for future requests) - for k, vv := range req.Header { - if !httplex.ValidHeaderFieldName(k) { - return nil, fmt.Errorf("invalid HTTP header name %q", k) - } - for _, v := range vv { - if !httplex.ValidHeaderFieldValue(v) { - return nil, fmt.Errorf("invalid HTTP header value %q for header %q", v, k) - } - } - } - - // 8.1.2.3 Request Pseudo-Header Fields - // The :path pseudo-header field includes the path and query parts of the - // target URI (the path-absolute production and optionally a '?' character - // followed by the query production (see Sections 3.3 and 3.4 of - // [RFC3986]). - cc.writeHeader(":authority", host) - cc.writeHeader(":method", req.Method) - if req.Method != "CONNECT" { - cc.writeHeader(":path", path) - cc.writeHeader(":scheme", "https") - } - if trailers != "" { - cc.writeHeader("trailer", trailers) - } - - var didUA bool - for k, vv := range req.Header { - lowKey := strings.ToLower(k) - switch lowKey { - case "host", "content-length": - // Host is :authority, already sent. - // Content-Length is automatic, set below. - continue - case "connection", "proxy-connection", "transfer-encoding", "upgrade", "keep-alive": - // Per 8.1.2.2 Connection-Specific Header - // Fields, don't send connection-specific - // fields. We have already checked if any - // are error-worthy so just ignore the rest. - continue - case "user-agent": - // Match Go's http1 behavior: at most one - // User-Agent. If set to nil or empty string, - // then omit it. Otherwise if not mentioned, - // include the default (below). - didUA = true - if len(vv) < 1 { - continue - } - vv = vv[:1] - if vv[0] == "" { - continue - } - } - for _, v := range vv { - cc.writeHeader(lowKey, v) - } - } - if shouldSendReqContentLength(req.Method, contentLength) { - cc.writeHeader("content-length", strconv.FormatInt(contentLength, 10)) - } - if addGzipHeader { - cc.writeHeader("accept-encoding", "gzip") - } - if !didUA { - cc.writeHeader("user-agent", defaultUserAgent) - } - return cc.hbuf.Bytes(), nil -} - -// shouldSendReqContentLength reports whether the http2.Transport should send -// a "content-length" request header. This logic is basically a copy of the net/http -// transferWriter.shouldSendContentLength. -// The contentLength is the corrected contentLength (so 0 means actually 0, not unknown). -// -1 means unknown. -func shouldSendReqContentLength(method string, contentLength int64) bool { - if contentLength > 0 { - return true - } - if contentLength < 0 { - return false - } - // For zero bodies, whether we send a content-length depends on the method. - // It also kinda doesn't matter for http2 either way, with END_STREAM. - switch method { - case "POST", "PUT", "PATCH": - return true - default: - return false - } -} - -// requires cc.mu be held. -func (cc *ClientConn) encodeTrailers(req *http.Request) []byte { - cc.hbuf.Reset() - for k, vv := range req.Trailer { - // Transfer-Encoding, etc.. have already been filter at the - // start of RoundTrip - lowKey := strings.ToLower(k) - for _, v := range vv { - cc.writeHeader(lowKey, v) - } - } - return cc.hbuf.Bytes() -} - -func (cc *ClientConn) writeHeader(name, value string) { - if VerboseLogs { - log.Printf("http2: Transport encoding header %q = %q", name, value) - } - cc.henc.WriteField(hpack.HeaderField{Name: name, Value: value}) -} - -type resAndError struct { - res *http.Response - err error -} - -// requires cc.mu be held. -func (cc *ClientConn) newStream() *clientStream { - cs := &clientStream{ - cc: cc, - ID: cc.nextStreamID, - resc: make(chan resAndError, 1), - peerReset: make(chan struct{}), - done: make(chan struct{}), - } - cs.flow.add(int32(cc.initialWindowSize)) - cs.flow.setConnFlow(&cc.flow) - cs.inflow.add(transportDefaultStreamFlow) - cs.inflow.setConnFlow(&cc.inflow) - cc.nextStreamID += 2 - cc.streams[cs.ID] = cs - return cs -} - -func (cc *ClientConn) forgetStreamID(id uint32) { - cc.streamByID(id, true) -} - -func (cc *ClientConn) streamByID(id uint32, andRemove bool) *clientStream { - cc.mu.Lock() - defer cc.mu.Unlock() - cs := cc.streams[id] - if andRemove && cs != nil && !cc.closed { - cc.lastActive = time.Now() - delete(cc.streams, id) - close(cs.done) - cc.cond.Broadcast() // wake up checkResetOrDone via clientStream.awaitFlowControl - } - return cs -} - -// clientConnReadLoop is the state owned by the clientConn's frame-reading readLoop. -type clientConnReadLoop struct { - cc *ClientConn - activeRes map[uint32]*clientStream // keyed by streamID - closeWhenIdle bool -} - -// readLoop runs in its own goroutine and reads and dispatches frames. -func (cc *ClientConn) readLoop() { - rl := &clientConnReadLoop{ - cc: cc, - activeRes: make(map[uint32]*clientStream), - } - - defer rl.cleanup() - cc.readerErr = rl.run() - if ce, ok := cc.readerErr.(ConnectionError); ok { - cc.wmu.Lock() - cc.fr.WriteGoAway(0, ErrCode(ce), nil) - cc.wmu.Unlock() - } -} - -// GoAwayError is returned by the Transport when the server closes the -// TCP connection after sending a GOAWAY frame. -type GoAwayError struct { - LastStreamID uint32 - ErrCode ErrCode - DebugData string -} - -func (e GoAwayError) Error() string { - return fmt.Sprintf("http2: server sent GOAWAY and closed the connection; LastStreamID=%v, ErrCode=%v, debug=%q", - e.LastStreamID, e.ErrCode, e.DebugData) -} - -func isEOFOrNetReadError(err error) bool { - if err == io.EOF { - return true - } - ne, ok := err.(*net.OpError) - return ok && ne.Op == "read" -} - -func (rl *clientConnReadLoop) cleanup() { - cc := rl.cc - defer cc.tconn.Close() - defer cc.t.connPool().MarkDead(cc) - defer close(cc.readerDone) - - // Close any response bodies if the server closes prematurely. - // TODO: also do this if we've written the headers but not - // gotten a response yet. - err := cc.readerErr - cc.mu.Lock() - if cc.goAway != nil && isEOFOrNetReadError(err) { - err = GoAwayError{ - LastStreamID: cc.goAway.LastStreamID, - ErrCode: cc.goAway.ErrCode, - DebugData: cc.goAwayDebug, - } - } else if err == io.EOF { - err = io.ErrUnexpectedEOF - } - for _, cs := range rl.activeRes { - cs.bufPipe.CloseWithError(err) - } - for _, cs := range cc.streams { - select { - case cs.resc <- resAndError{err: err}: - default: - } - close(cs.done) - } - cc.closed = true - cc.cond.Broadcast() - cc.mu.Unlock() -} - -func (rl *clientConnReadLoop) run() error { - cc := rl.cc - rl.closeWhenIdle = cc.t.disableKeepAlives() || cc.singleUse - gotReply := false // ever saw a HEADERS reply - gotSettings := false - for { - f, err := cc.fr.ReadFrame() - if err != nil { - cc.vlogf("http2: Transport readFrame error on conn %p: (%T) %v", cc, err, err) - } - if se, ok := err.(StreamError); ok { - if cs := cc.streamByID(se.StreamID, true /*ended; remove it*/); cs != nil { - cs.cc.writeStreamReset(cs.ID, se.Code, err) - if se.Cause == nil { - se.Cause = cc.fr.errDetail - } - rl.endStreamError(cs, se) - } - continue - } else if err != nil { - return err - } - if VerboseLogs { - cc.vlogf("http2: Transport received %s", summarizeFrame(f)) - } - if !gotSettings { - if _, ok := f.(*SettingsFrame); !ok { - cc.logf("protocol error: received %T before a SETTINGS frame", f) - return ConnectionError(ErrCodeProtocol) - } - gotSettings = true - } - maybeIdle := false // whether frame might transition us to idle - - switch f := f.(type) { - case *MetaHeadersFrame: - err = rl.processHeaders(f) - maybeIdle = true - gotReply = true - case *DataFrame: - err = rl.processData(f) - maybeIdle = true - case *GoAwayFrame: - err = rl.processGoAway(f) - maybeIdle = true - case *RSTStreamFrame: - err = rl.processResetStream(f) - maybeIdle = true - case *SettingsFrame: - err = rl.processSettings(f) - case *PushPromiseFrame: - err = rl.processPushPromise(f) - case *WindowUpdateFrame: - err = rl.processWindowUpdate(f) - case *PingFrame: - err = rl.processPing(f) - default: - cc.logf("Transport: unhandled response frame type %T", f) - } - if err != nil { - if VerboseLogs { - cc.vlogf("http2: Transport conn %p received error from processing frame %v: %v", cc, summarizeFrame(f), err) - } - return err - } - if rl.closeWhenIdle && gotReply && maybeIdle && len(rl.activeRes) == 0 { - cc.closeIfIdle() - } - } -} - -func (rl *clientConnReadLoop) processHeaders(f *MetaHeadersFrame) error { - cc := rl.cc - cs := cc.streamByID(f.StreamID, f.StreamEnded()) - if cs == nil { - // We'd get here if we canceled a request while the - // server had its response still in flight. So if this - // was just something we canceled, ignore it. - return nil - } - if !cs.firstByte { - if cs.trace != nil { - // TODO(bradfitz): move first response byte earlier, - // when we first read the 9 byte header, not waiting - // until all the HEADERS+CONTINUATION frames have been - // merged. This works for now. - traceFirstResponseByte(cs.trace) - } - cs.firstByte = true - } - if !cs.pastHeaders { - cs.pastHeaders = true - } else { - return rl.processTrailers(cs, f) - } - - res, err := rl.handleResponse(cs, f) - if err != nil { - if _, ok := err.(ConnectionError); ok { - return err - } - // Any other error type is a stream error. - cs.cc.writeStreamReset(f.StreamID, ErrCodeProtocol, err) - cs.resc <- resAndError{err: err} - return nil // return nil from process* funcs to keep conn alive - } - if res == nil { - // (nil, nil) special case. See handleResponse docs. - return nil - } - if res.Body != noBody { - rl.activeRes[cs.ID] = cs - } - cs.resTrailer = &res.Trailer - cs.resc <- resAndError{res: res} - return nil -} - -// may return error types nil, or ConnectionError. Any other error value -// is a StreamError of type ErrCodeProtocol. The returned error in that case -// is the detail. -// -// As a special case, handleResponse may return (nil, nil) to skip the -// frame (currently only used for 100 expect continue). This special -// case is going away after Issue 13851 is fixed. -func (rl *clientConnReadLoop) handleResponse(cs *clientStream, f *MetaHeadersFrame) (*http.Response, error) { - if f.Truncated { - return nil, errResponseHeaderListSize - } - - status := f.PseudoValue("status") - if status == "" { - return nil, errors.New("missing status pseudo header") - } - statusCode, err := strconv.Atoi(status) - if err != nil { - return nil, errors.New("malformed non-numeric status pseudo header") - } - - if statusCode == 100 { - traceGot100Continue(cs.trace) - if cs.on100 != nil { - cs.on100() // forces any write delay timer to fire - } - cs.pastHeaders = false // do it all again - return nil, nil - } - - header := make(http.Header) - res := &http.Response{ - Proto: "HTTP/2.0", - ProtoMajor: 2, - Header: header, - StatusCode: statusCode, - Status: status + " " + http.StatusText(statusCode), - } - for _, hf := range f.RegularFields() { - key := http.CanonicalHeaderKey(hf.Name) - if key == "Trailer" { - t := res.Trailer - if t == nil { - t = make(http.Header) - res.Trailer = t - } - foreachHeaderElement(hf.Value, func(v string) { - t[http.CanonicalHeaderKey(v)] = nil - }) - } else { - header[key] = append(header[key], hf.Value) - } - } - - streamEnded := f.StreamEnded() - isHead := cs.req.Method == "HEAD" - if !streamEnded || isHead { - res.ContentLength = -1 - if clens := res.Header["Content-Length"]; len(clens) == 1 { - if clen64, err := strconv.ParseInt(clens[0], 10, 64); err == nil { - res.ContentLength = clen64 - } else { - // TODO: care? unlike http/1, it won't mess up our framing, so it's - // more safe smuggling-wise to ignore. - } - } else if len(clens) > 1 { - // TODO: care? unlike http/1, it won't mess up our framing, so it's - // more safe smuggling-wise to ignore. - } - } - - if streamEnded || isHead { - res.Body = noBody - return res, nil - } - - buf := new(bytes.Buffer) // TODO(bradfitz): recycle this garbage - cs.bufPipe = pipe{b: buf} - cs.bytesRemain = res.ContentLength - res.Body = transportResponseBody{cs} - go cs.awaitRequestCancel(cs.req) - - if cs.requestedGzip && res.Header.Get("Content-Encoding") == "gzip" { - res.Header.Del("Content-Encoding") - res.Header.Del("Content-Length") - res.ContentLength = -1 - res.Body = &gzipReader{body: res.Body} - setResponseUncompressed(res) - } - return res, nil -} - -func (rl *clientConnReadLoop) processTrailers(cs *clientStream, f *MetaHeadersFrame) error { - if cs.pastTrailers { - // Too many HEADERS frames for this stream. - return ConnectionError(ErrCodeProtocol) - } - cs.pastTrailers = true - if !f.StreamEnded() { - // We expect that any headers for trailers also - // has END_STREAM. - return ConnectionError(ErrCodeProtocol) - } - if len(f.PseudoFields()) > 0 { - // No pseudo header fields are defined for trailers. - // TODO: ConnectionError might be overly harsh? Check. - return ConnectionError(ErrCodeProtocol) - } - - trailer := make(http.Header) - for _, hf := range f.RegularFields() { - key := http.CanonicalHeaderKey(hf.Name) - trailer[key] = append(trailer[key], hf.Value) - } - cs.trailer = trailer - - rl.endStream(cs) - return nil -} - -// transportResponseBody is the concrete type of Transport.RoundTrip's -// Response.Body. It is an io.ReadCloser. On Read, it reads from cs.body. -// On Close it sends RST_STREAM if EOF wasn't already seen. -type transportResponseBody struct { - cs *clientStream -} - -func (b transportResponseBody) Read(p []byte) (n int, err error) { - cs := b.cs - cc := cs.cc - - if cs.readErr != nil { - return 0, cs.readErr - } - n, err = b.cs.bufPipe.Read(p) - if cs.bytesRemain != -1 { - if int64(n) > cs.bytesRemain { - n = int(cs.bytesRemain) - if err == nil { - err = errors.New("net/http: server replied with more than declared Content-Length; truncated") - cc.writeStreamReset(cs.ID, ErrCodeProtocol, err) - } - cs.readErr = err - return int(cs.bytesRemain), err - } - cs.bytesRemain -= int64(n) - if err == io.EOF && cs.bytesRemain > 0 { - err = io.ErrUnexpectedEOF - cs.readErr = err - return n, err - } - } - if n == 0 { - // No flow control tokens to send back. - return - } - - cc.mu.Lock() - defer cc.mu.Unlock() - - var connAdd, streamAdd int32 - // Check the conn-level first, before the stream-level. - if v := cc.inflow.available(); v < transportDefaultConnFlow/2 { - connAdd = transportDefaultConnFlow - v - cc.inflow.add(connAdd) - } - if err == nil { // No need to refresh if the stream is over or failed. - // Consider any buffered body data (read from the conn but not - // consumed by the client) when computing flow control for this - // stream. - v := int(cs.inflow.available()) + cs.bufPipe.Len() - if v < transportDefaultStreamFlow-transportDefaultStreamMinRefresh { - streamAdd = int32(transportDefaultStreamFlow - v) - cs.inflow.add(streamAdd) - } - } - if connAdd != 0 || streamAdd != 0 { - cc.wmu.Lock() - defer cc.wmu.Unlock() - if connAdd != 0 { - cc.fr.WriteWindowUpdate(0, mustUint31(connAdd)) - } - if streamAdd != 0 { - cc.fr.WriteWindowUpdate(cs.ID, mustUint31(streamAdd)) - } - cc.bw.Flush() - } - return -} - -var errClosedResponseBody = errors.New("http2: response body closed") - -func (b transportResponseBody) Close() error { - cs := b.cs - cc := cs.cc - - serverSentStreamEnd := cs.bufPipe.Err() == io.EOF - unread := cs.bufPipe.Len() - - if unread > 0 || !serverSentStreamEnd { - cc.mu.Lock() - cc.wmu.Lock() - if !serverSentStreamEnd { - cc.fr.WriteRSTStream(cs.ID, ErrCodeCancel) - } - // Return connection-level flow control. - if unread > 0 { - cc.inflow.add(int32(unread)) - cc.fr.WriteWindowUpdate(0, uint32(unread)) - } - cc.bw.Flush() - cc.wmu.Unlock() - cc.mu.Unlock() - } - - cs.bufPipe.BreakWithError(errClosedResponseBody) - return nil -} - -func (rl *clientConnReadLoop) processData(f *DataFrame) error { - cc := rl.cc - cs := cc.streamByID(f.StreamID, f.StreamEnded()) - data := f.Data() - if cs == nil { - cc.mu.Lock() - neverSent := cc.nextStreamID - cc.mu.Unlock() - if f.StreamID >= neverSent { - // We never asked for this. - cc.logf("http2: Transport received unsolicited DATA frame; closing connection") - return ConnectionError(ErrCodeProtocol) - } - // We probably did ask for this, but canceled. Just ignore it. - // TODO: be stricter here? only silently ignore things which - // we canceled, but not things which were closed normally - // by the peer? Tough without accumulating too much state. - - // But at least return their flow control: - if f.Length > 0 { - cc.mu.Lock() - cc.inflow.add(int32(f.Length)) - cc.mu.Unlock() - - cc.wmu.Lock() - cc.fr.WriteWindowUpdate(0, uint32(f.Length)) - cc.bw.Flush() - cc.wmu.Unlock() - } - return nil - } - if f.Length > 0 { - if len(data) > 0 && cs.bufPipe.b == nil { - // Data frame after it's already closed? - cc.logf("http2: Transport received DATA frame for closed stream; closing connection") - return ConnectionError(ErrCodeProtocol) - } - - // Check connection-level flow control. - cc.mu.Lock() - if cs.inflow.available() >= int32(f.Length) { - cs.inflow.take(int32(f.Length)) - } else { - cc.mu.Unlock() - return ConnectionError(ErrCodeFlowControl) - } - // Return any padded flow control now, since we won't - // refund it later on body reads. - if pad := int32(f.Length) - int32(len(data)); pad > 0 { - cs.inflow.add(pad) - cc.inflow.add(pad) - cc.wmu.Lock() - cc.fr.WriteWindowUpdate(0, uint32(pad)) - cc.fr.WriteWindowUpdate(cs.ID, uint32(pad)) - cc.bw.Flush() - cc.wmu.Unlock() - } - cc.mu.Unlock() - - if len(data) > 0 { - if _, err := cs.bufPipe.Write(data); err != nil { - rl.endStreamError(cs, err) - return err - } - } - } - - if f.StreamEnded() { - rl.endStream(cs) - } - return nil -} - -var errInvalidTrailers = errors.New("http2: invalid trailers") - -func (rl *clientConnReadLoop) endStream(cs *clientStream) { - // TODO: check that any declared content-length matches, like - // server.go's (*stream).endStream method. - rl.endStreamError(cs, nil) -} - -func (rl *clientConnReadLoop) endStreamError(cs *clientStream, err error) { - var code func() - if err == nil { - err = io.EOF - code = cs.copyTrailers - } - cs.bufPipe.closeWithErrorAndCode(err, code) - delete(rl.activeRes, cs.ID) - if isConnectionCloseRequest(cs.req) { - rl.closeWhenIdle = true - } - - select { - case cs.resc <- resAndError{err: err}: - default: - } -} - -func (cs *clientStream) copyTrailers() { - for k, vv := range cs.trailer { - t := cs.resTrailer - if *t == nil { - *t = make(http.Header) - } - (*t)[k] = vv - } -} - -func (rl *clientConnReadLoop) processGoAway(f *GoAwayFrame) error { - cc := rl.cc - cc.t.connPool().MarkDead(cc) - if f.ErrCode != 0 { - // TODO: deal with GOAWAY more. particularly the error code - cc.vlogf("transport got GOAWAY with error code = %v", f.ErrCode) - } - cc.setGoAway(f) - return nil -} - -func (rl *clientConnReadLoop) processSettings(f *SettingsFrame) error { - cc := rl.cc - cc.mu.Lock() - defer cc.mu.Unlock() - - if f.IsAck() { - if cc.wantSettingsAck { - cc.wantSettingsAck = false - return nil - } - return ConnectionError(ErrCodeProtocol) - } - - err := f.ForeachSetting(func(s Setting) error { - switch s.ID { - case SettingMaxFrameSize: - cc.maxFrameSize = s.Val - case SettingMaxConcurrentStreams: - cc.maxConcurrentStreams = s.Val - case SettingInitialWindowSize: - // Values above the maximum flow-control - // window size of 2^31-1 MUST be treated as a - // connection error (Section 5.4.1) of type - // FLOW_CONTROL_ERROR. - if s.Val > math.MaxInt32 { - return ConnectionError(ErrCodeFlowControl) - } - - // Adjust flow control of currently-open - // frames by the difference of the old initial - // window size and this one. - delta := int32(s.Val) - int32(cc.initialWindowSize) - for _, cs := range cc.streams { - cs.flow.add(delta) - } - cc.cond.Broadcast() - - cc.initialWindowSize = s.Val - default: - // TODO(bradfitz): handle more settings? SETTINGS_HEADER_TABLE_SIZE probably. - cc.vlogf("Unhandled Setting: %v", s) - } - return nil - }) - if err != nil { - return err - } - - cc.wmu.Lock() - defer cc.wmu.Unlock() - - cc.fr.WriteSettingsAck() - cc.bw.Flush() - return cc.werr -} - -func (rl *clientConnReadLoop) processWindowUpdate(f *WindowUpdateFrame) error { - cc := rl.cc - cs := cc.streamByID(f.StreamID, false) - if f.StreamID != 0 && cs == nil { - return nil - } - - cc.mu.Lock() - defer cc.mu.Unlock() - - fl := &cc.flow - if cs != nil { - fl = &cs.flow - } - if !fl.add(int32(f.Increment)) { - return ConnectionError(ErrCodeFlowControl) - } - cc.cond.Broadcast() - return nil -} - -func (rl *clientConnReadLoop) processResetStream(f *RSTStreamFrame) error { - cs := rl.cc.streamByID(f.StreamID, true) - if cs == nil { - // TODO: return error if server tries to RST_STEAM an idle stream - return nil - } - select { - case <-cs.peerReset: - // Already reset. - // This is the only goroutine - // which closes this, so there - // isn't a race. - default: - err := streamError(cs.ID, f.ErrCode) - cs.resetErr = err - close(cs.peerReset) - cs.bufPipe.CloseWithError(err) - cs.cc.cond.Broadcast() // wake up checkResetOrDone via clientStream.awaitFlowControl - } - delete(rl.activeRes, cs.ID) - return nil -} - -func (rl *clientConnReadLoop) processPing(f *PingFrame) error { - if f.IsAck() { - // 6.7 PING: " An endpoint MUST NOT respond to PING frames - // containing this flag." - return nil - } - cc := rl.cc - cc.wmu.Lock() - defer cc.wmu.Unlock() - if err := cc.fr.WritePing(true, f.Data); err != nil { - return err - } - return cc.bw.Flush() -} - -func (rl *clientConnReadLoop) processPushPromise(f *PushPromiseFrame) error { - // We told the peer we don't want them. - // Spec says: - // "PUSH_PROMISE MUST NOT be sent if the SETTINGS_ENABLE_PUSH - // setting of the peer endpoint is set to 0. An endpoint that - // has set this setting and has received acknowledgement MUST - // treat the receipt of a PUSH_PROMISE frame as a connection - // error (Section 5.4.1) of type PROTOCOL_ERROR." - return ConnectionError(ErrCodeProtocol) -} - -func (cc *ClientConn) writeStreamReset(streamID uint32, code ErrCode, err error) { - // TODO: map err to more interesting error codes, once the - // HTTP community comes up with some. But currently for - // RST_STREAM there's no equivalent to GOAWAY frame's debug - // data, and the error codes are all pretty vague ("cancel"). - cc.wmu.Lock() - cc.fr.WriteRSTStream(streamID, code) - cc.bw.Flush() - cc.wmu.Unlock() -} - -var ( - errResponseHeaderListSize = errors.New("http2: response header list larger than advertised limit") - errPseudoTrailers = errors.New("http2: invalid pseudo header in trailers") -) - -func (cc *ClientConn) logf(format string, args ...interface{}) { - cc.t.logf(format, args...) -} - -func (cc *ClientConn) vlogf(format string, args ...interface{}) { - cc.t.vlogf(format, args...) -} - -func (t *Transport) vlogf(format string, args ...interface{}) { - if VerboseLogs { - t.logf(format, args...) - } -} - -func (t *Transport) logf(format string, args ...interface{}) { - log.Printf(format, args...) -} - -var noBody io.ReadCloser = ioutil.NopCloser(bytes.NewReader(nil)) - -func strSliceContains(ss []string, s string) bool { - for _, v := range ss { - if v == s { - return true - } - } - return false -} - -type erringRoundTripper struct{ err error } - -func (rt erringRoundTripper) RoundTrip(*http.Request) (*http.Response, error) { return nil, rt.err } - -// gzipReader wraps a response body so it can lazily -// call gzip.NewReader on the first call to Read -type gzipReader struct { - body io.ReadCloser // underlying Response.Body - zr *gzip.Reader // lazily-initialized gzip reader - zerr error // sticky error -} - -func (gz *gzipReader) Read(p []byte) (n int, err error) { - if gz.zerr != nil { - return 0, gz.zerr - } - if gz.zr == nil { - gz.zr, err = gzip.NewReader(gz.body) - if err != nil { - gz.zerr = err - return 0, err - } - } - return gz.zr.Read(p) -} - -func (gz *gzipReader) Close() error { - return gz.body.Close() -} - -type errorReader struct{ err error } - -func (r errorReader) Read(p []byte) (int, error) { return 0, r.err } - -// bodyWriterState encapsulates various state around the Transport's writing -// of the request body, particularly regarding doing delayed writes of the body -// when the request contains "Expect: 100-continue". -type bodyWriterState struct { - cs *clientStream - timer *time.Timer // if non-nil, we're doing a delayed write - fnonce *sync.Once // to call fn with - fn func() // the code to run in the goroutine, writing the body - resc chan error // result of fn's execution - delay time.Duration // how long we should delay a delayed write for -} - -func (t *Transport) getBodyWriterState(cs *clientStream, body io.Reader) (s bodyWriterState) { - s.cs = cs - if body == nil { - return - } - resc := make(chan error, 1) - s.resc = resc - s.fn = func() { - resc <- cs.writeRequestBody(body, cs.req.Body) - } - s.delay = t.expectContinueTimeout() - if s.delay == 0 || - !httplex.HeaderValuesContainsToken( - cs.req.Header["Expect"], - "100-continue") { - return - } - s.fnonce = new(sync.Once) - - // Arm the timer with a very large duration, which we'll - // intentionally lower later. It has to be large now because - // we need a handle to it before writing the headers, but the - // s.delay value is defined to not start until after the - // request headers were written. - const hugeDuration = 365 * 24 * time.Hour - s.timer = time.AfterFunc(hugeDuration, func() { - s.fnonce.Do(s.fn) - }) - return -} - -func (s bodyWriterState) cancel() { - if s.timer != nil { - s.timer.Stop() - } -} - -func (s bodyWriterState) on100() { - if s.timer == nil { - // If we didn't do a delayed write, ignore the server's - // bogus 100 continue response. - return - } - s.timer.Stop() - go func() { s.fnonce.Do(s.fn) }() -} - -// scheduleBodyWrite starts writing the body, either immediately (in -// the common case) or after the delay timeout. It should not be -// called until after the headers have been written. -func (s bodyWriterState) scheduleBodyWrite() { - if s.timer == nil { - // We're not doing a delayed write (see - // getBodyWriterState), so just start the writing - // goroutine immediately. - go s.fn() - return - } - traceWait100Continue(s.cs.trace) - if s.timer.Stop() { - s.timer.Reset(s.delay) - } -} - -// isConnectionCloseRequest reports whether req should use its own -// connection for a single request and then close the connection. -func isConnectionCloseRequest(req *http.Request) bool { - return req.Close || httplex.HeaderValuesContainsToken(req.Header["Connection"], "close") -} diff --git a/vendor/golang.org/x/net/http2/write.go b/vendor/golang.org/x/net/http2/write.go deleted file mode 100644 index 27ef0dd4d7..0000000000 --- a/vendor/golang.org/x/net/http2/write.go +++ /dev/null @@ -1,264 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package http2 - -import ( - "bytes" - "fmt" - "log" - "net/http" - "time" - - "golang.org/x/net/http2/hpack" - "golang.org/x/net/lex/httplex" -) - -// writeFramer is implemented by any type that is used to write frames. -type writeFramer interface { - writeFrame(writeContext) error -} - -// writeContext is the interface needed by the various frame writer -// types below. All the writeFrame methods below are scheduled via the -// frame writing scheduler (see writeScheduler in writesched.go). -// -// This interface is implemented by *serverConn. -// -// TODO: decide whether to a) use this in the client code (which didn't -// end up using this yet, because it has a simpler design, not -// currently implementing priorities), or b) delete this and -// make the server code a bit more concrete. -type writeContext interface { - Framer() *Framer - Flush() error - CloseConn() error - // HeaderEncoder returns an HPACK encoder that writes to the - // returned buffer. - HeaderEncoder() (*hpack.Encoder, *bytes.Buffer) -} - -// endsStream reports whether the given frame writer w will locally -// close the stream. -func endsStream(w writeFramer) bool { - switch v := w.(type) { - case *writeData: - return v.endStream - case *writeResHeaders: - return v.endStream - case nil: - // This can only happen if the caller reuses w after it's - // been intentionally nil'ed out to prevent use. Keep this - // here to catch future refactoring breaking it. - panic("endsStream called on nil writeFramer") - } - return false -} - -type flushFrameWriter struct{} - -func (flushFrameWriter) writeFrame(ctx writeContext) error { - return ctx.Flush() -} - -type writeSettings []Setting - -func (s writeSettings) writeFrame(ctx writeContext) error { - return ctx.Framer().WriteSettings([]Setting(s)...) -} - -type writeGoAway struct { - maxStreamID uint32 - code ErrCode -} - -func (p *writeGoAway) writeFrame(ctx writeContext) error { - err := ctx.Framer().WriteGoAway(p.maxStreamID, p.code, nil) - if p.code != 0 { - ctx.Flush() // ignore error: we're hanging up on them anyway - time.Sleep(50 * time.Millisecond) - ctx.CloseConn() - } - return err -} - -type writeData struct { - streamID uint32 - p []byte - endStream bool -} - -func (w *writeData) String() string { - return fmt.Sprintf("writeData(stream=%d, p=%d, endStream=%v)", w.streamID, len(w.p), w.endStream) -} - -func (w *writeData) writeFrame(ctx writeContext) error { - return ctx.Framer().WriteData(w.streamID, w.endStream, w.p) -} - -// handlerPanicRST is the message sent from handler goroutines when -// the handler panics. -type handlerPanicRST struct { - StreamID uint32 -} - -func (hp handlerPanicRST) writeFrame(ctx writeContext) error { - return ctx.Framer().WriteRSTStream(hp.StreamID, ErrCodeInternal) -} - -func (se StreamError) writeFrame(ctx writeContext) error { - return ctx.Framer().WriteRSTStream(se.StreamID, se.Code) -} - -type writePingAck struct{ pf *PingFrame } - -func (w writePingAck) writeFrame(ctx writeContext) error { - return ctx.Framer().WritePing(true, w.pf.Data) -} - -type writeSettingsAck struct{} - -func (writeSettingsAck) writeFrame(ctx writeContext) error { - return ctx.Framer().WriteSettingsAck() -} - -// writeResHeaders is a request to write a HEADERS and 0+ CONTINUATION frames -// for HTTP response headers or trailers from a server handler. -type writeResHeaders struct { - streamID uint32 - httpResCode int // 0 means no ":status" line - h http.Header // may be nil - trailers []string // if non-nil, which keys of h to write. nil means all. - endStream bool - - date string - contentType string - contentLength string -} - -func encKV(enc *hpack.Encoder, k, v string) { - if VerboseLogs { - log.Printf("http2: server encoding header %q = %q", k, v) - } - enc.WriteField(hpack.HeaderField{Name: k, Value: v}) -} - -func (w *writeResHeaders) writeFrame(ctx writeContext) error { - enc, buf := ctx.HeaderEncoder() - buf.Reset() - - if w.httpResCode != 0 { - encKV(enc, ":status", httpCodeString(w.httpResCode)) - } - - encodeHeaders(enc, w.h, w.trailers) - - if w.contentType != "" { - encKV(enc, "content-type", w.contentType) - } - if w.contentLength != "" { - encKV(enc, "content-length", w.contentLength) - } - if w.date != "" { - encKV(enc, "date", w.date) - } - - headerBlock := buf.Bytes() - if len(headerBlock) == 0 && w.trailers == nil { - panic("unexpected empty hpack") - } - - // For now we're lazy and just pick the minimum MAX_FRAME_SIZE - // that all peers must support (16KB). Later we could care - // more and send larger frames if the peer advertised it, but - // there's little point. Most headers are small anyway (so we - // generally won't have CONTINUATION frames), and extra frames - // only waste 9 bytes anyway. - const maxFrameSize = 16384 - - first := true - for len(headerBlock) > 0 { - frag := headerBlock - if len(frag) > maxFrameSize { - frag = frag[:maxFrameSize] - } - headerBlock = headerBlock[len(frag):] - endHeaders := len(headerBlock) == 0 - var err error - if first { - first = false - err = ctx.Framer().WriteHeaders(HeadersFrameParam{ - StreamID: w.streamID, - BlockFragment: frag, - EndStream: w.endStream, - EndHeaders: endHeaders, - }) - } else { - err = ctx.Framer().WriteContinuation(w.streamID, endHeaders, frag) - } - if err != nil { - return err - } - } - return nil -} - -type write100ContinueHeadersFrame struct { - streamID uint32 -} - -func (w write100ContinueHeadersFrame) writeFrame(ctx writeContext) error { - enc, buf := ctx.HeaderEncoder() - buf.Reset() - encKV(enc, ":status", "100") - return ctx.Framer().WriteHeaders(HeadersFrameParam{ - StreamID: w.streamID, - BlockFragment: buf.Bytes(), - EndStream: false, - EndHeaders: true, - }) -} - -type writeWindowUpdate struct { - streamID uint32 // or 0 for conn-level - n uint32 -} - -func (wu writeWindowUpdate) writeFrame(ctx writeContext) error { - return ctx.Framer().WriteWindowUpdate(wu.streamID, wu.n) -} - -func encodeHeaders(enc *hpack.Encoder, h http.Header, keys []string) { - if keys == nil { - sorter := sorterPool.Get().(*sorter) - // Using defer here, since the returned keys from the - // sorter.Keys method is only valid until the sorter - // is returned: - defer sorterPool.Put(sorter) - keys = sorter.Keys(h) - } - for _, k := range keys { - vv := h[k] - k = lowerHeader(k) - if !validWireHeaderFieldName(k) { - // Skip it as backup paranoia. Per - // golang.org/issue/14048, these should - // already be rejected at a higher level. - continue - } - isTE := k == "transfer-encoding" - for _, v := range vv { - if !httplex.ValidHeaderFieldValue(v) { - // TODO: return an error? golang.org/issue/14048 - // For now just omit it. - continue - } - // TODO: more of "8.1.2.2 Connection-Specific Header Fields" - if isTE && v != "trailers" { - continue - } - encKV(enc, k, v) - } - } -} diff --git a/vendor/golang.org/x/net/http2/writesched.go b/vendor/golang.org/x/net/http2/writesched.go deleted file mode 100644 index c24316ce7b..0000000000 --- a/vendor/golang.org/x/net/http2/writesched.go +++ /dev/null @@ -1,283 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package http2 - -import "fmt" - -// frameWriteMsg is a request to write a frame. -type frameWriteMsg struct { - // write is the interface value that does the writing, once the - // writeScheduler (below) has decided to select this frame - // to write. The write functions are all defined in write.go. - write writeFramer - - stream *stream // used for prioritization. nil for non-stream frames. - - // done, if non-nil, must be a buffered channel with space for - // 1 message and is sent the return value from write (or an - // earlier error) when the frame has been written. - done chan error -} - -// for debugging only: -func (wm frameWriteMsg) String() string { - var streamID uint32 - if wm.stream != nil { - streamID = wm.stream.id - } - var des string - if s, ok := wm.write.(fmt.Stringer); ok { - des = s.String() - } else { - des = fmt.Sprintf("%T", wm.write) - } - return fmt.Sprintf("[frameWriteMsg stream=%d, ch=%v, type: %v]", streamID, wm.done != nil, des) -} - -// writeScheduler tracks pending frames to write, priorities, and decides -// the next one to use. It is not thread-safe. -type writeScheduler struct { - // zero are frames not associated with a specific stream. - // They're sent before any stream-specific freams. - zero writeQueue - - // maxFrameSize is the maximum size of a DATA frame - // we'll write. Must be non-zero and between 16K-16M. - maxFrameSize uint32 - - // sq contains the stream-specific queues, keyed by stream ID. - // when a stream is idle, it's deleted from the map. - sq map[uint32]*writeQueue - - // canSend is a slice of memory that's reused between frame - // scheduling decisions to hold the list of writeQueues (from sq) - // which have enough flow control data to send. After canSend is - // built, the best is selected. - canSend []*writeQueue - - // pool of empty queues for reuse. - queuePool []*writeQueue -} - -func (ws *writeScheduler) putEmptyQueue(q *writeQueue) { - if len(q.s) != 0 { - panic("queue must be empty") - } - ws.queuePool = append(ws.queuePool, q) -} - -func (ws *writeScheduler) getEmptyQueue() *writeQueue { - ln := len(ws.queuePool) - if ln == 0 { - return new(writeQueue) - } - q := ws.queuePool[ln-1] - ws.queuePool = ws.queuePool[:ln-1] - return q -} - -func (ws *writeScheduler) empty() bool { return ws.zero.empty() && len(ws.sq) == 0 } - -func (ws *writeScheduler) add(wm frameWriteMsg) { - st := wm.stream - if st == nil { - ws.zero.push(wm) - } else { - ws.streamQueue(st.id).push(wm) - } -} - -func (ws *writeScheduler) streamQueue(streamID uint32) *writeQueue { - if q, ok := ws.sq[streamID]; ok { - return q - } - if ws.sq == nil { - ws.sq = make(map[uint32]*writeQueue) - } - q := ws.getEmptyQueue() - ws.sq[streamID] = q - return q -} - -// take returns the most important frame to write and removes it from the scheduler. -// It is illegal to call this if the scheduler is empty or if there are no connection-level -// flow control bytes available. -func (ws *writeScheduler) take() (wm frameWriteMsg, ok bool) { - if ws.maxFrameSize == 0 { - panic("internal error: ws.maxFrameSize not initialized or invalid") - } - - // If there any frames not associated with streams, prefer those first. - // These are usually SETTINGS, etc. - if !ws.zero.empty() { - return ws.zero.shift(), true - } - if len(ws.sq) == 0 { - return - } - - // Next, prioritize frames on streams that aren't DATA frames (no cost). - for id, q := range ws.sq { - if q.firstIsNoCost() { - return ws.takeFrom(id, q) - } - } - - // Now, all that remains are DATA frames with non-zero bytes to - // send. So pick the best one. - if len(ws.canSend) != 0 { - panic("should be empty") - } - for _, q := range ws.sq { - if n := ws.streamWritableBytes(q); n > 0 { - ws.canSend = append(ws.canSend, q) - } - } - if len(ws.canSend) == 0 { - return - } - defer ws.zeroCanSend() - - // TODO: find the best queue - q := ws.canSend[0] - - return ws.takeFrom(q.streamID(), q) -} - -// zeroCanSend is defered from take. -func (ws *writeScheduler) zeroCanSend() { - for i := range ws.canSend { - ws.canSend[i] = nil - } - ws.canSend = ws.canSend[:0] -} - -// streamWritableBytes returns the number of DATA bytes we could write -// from the given queue's stream, if this stream/queue were -// selected. It is an error to call this if q's head isn't a -// *writeData. -func (ws *writeScheduler) streamWritableBytes(q *writeQueue) int32 { - wm := q.head() - ret := wm.stream.flow.available() // max we can write - if ret == 0 { - return 0 - } - if int32(ws.maxFrameSize) < ret { - ret = int32(ws.maxFrameSize) - } - if ret == 0 { - panic("internal error: ws.maxFrameSize not initialized or invalid") - } - wd := wm.write.(*writeData) - if len(wd.p) < int(ret) { - ret = int32(len(wd.p)) - } - return ret -} - -func (ws *writeScheduler) takeFrom(id uint32, q *writeQueue) (wm frameWriteMsg, ok bool) { - wm = q.head() - // If the first item in this queue costs flow control tokens - // and we don't have enough, write as much as we can. - if wd, ok := wm.write.(*writeData); ok && len(wd.p) > 0 { - allowed := wm.stream.flow.available() // max we can write - if allowed == 0 { - // No quota available. Caller can try the next stream. - return frameWriteMsg{}, false - } - if int32(ws.maxFrameSize) < allowed { - allowed = int32(ws.maxFrameSize) - } - // TODO: further restrict the allowed size, because even if - // the peer says it's okay to write 16MB data frames, we might - // want to write smaller ones to properly weight competing - // streams' priorities. - - if len(wd.p) > int(allowed) { - wm.stream.flow.take(allowed) - chunk := wd.p[:allowed] - wd.p = wd.p[allowed:] - // Make up a new write message of a valid size, rather - // than shifting one off the queue. - return frameWriteMsg{ - stream: wm.stream, - write: &writeData{ - streamID: wd.streamID, - p: chunk, - // even if the original had endStream set, there - // arebytes remaining because len(wd.p) > allowed, - // so we know endStream is false: - endStream: false, - }, - // our caller is blocking on the final DATA frame, not - // these intermediates, so no need to wait: - done: nil, - }, true - } - wm.stream.flow.take(int32(len(wd.p))) - } - - q.shift() - if q.empty() { - ws.putEmptyQueue(q) - delete(ws.sq, id) - } - return wm, true -} - -func (ws *writeScheduler) forgetStream(id uint32) { - q, ok := ws.sq[id] - if !ok { - return - } - delete(ws.sq, id) - - // But keep it for others later. - for i := range q.s { - q.s[i] = frameWriteMsg{} - } - q.s = q.s[:0] - ws.putEmptyQueue(q) -} - -type writeQueue struct { - s []frameWriteMsg -} - -// streamID returns the stream ID for a non-empty stream-specific queue. -func (q *writeQueue) streamID() uint32 { return q.s[0].stream.id } - -func (q *writeQueue) empty() bool { return len(q.s) == 0 } - -func (q *writeQueue) push(wm frameWriteMsg) { - q.s = append(q.s, wm) -} - -// head returns the next item that would be removed by shift. -func (q *writeQueue) head() frameWriteMsg { - if len(q.s) == 0 { - panic("invalid use of queue") - } - return q.s[0] -} - -func (q *writeQueue) shift() frameWriteMsg { - if len(q.s) == 0 { - panic("invalid use of queue") - } - wm := q.s[0] - // TODO: less copy-happy queue. - copy(q.s, q.s[1:]) - q.s[len(q.s)-1] = frameWriteMsg{} - q.s = q.s[:len(q.s)-1] - return wm -} - -func (q *writeQueue) firstIsNoCost() bool { - if df, ok := q.s[0].write.(*writeData); ok { - return len(df.p) == 0 - } - return true -} diff --git a/vendor/golang.org/x/net/lex/httplex/httplex.go b/vendor/golang.org/x/net/lex/httplex/httplex.go deleted file mode 100644 index bd0ec24f44..0000000000 --- a/vendor/golang.org/x/net/lex/httplex/httplex.go +++ /dev/null @@ -1,312 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package httplex contains rules around lexical matters of various -// HTTP-related specifications. -// -// This package is shared by the standard library (which vendors it) -// and x/net/http2. It comes with no API stability promise. -package httplex - -import ( - "strings" - "unicode/utf8" -) - -var isTokenTable = [127]bool{ - '!': true, - '#': true, - '$': true, - '%': true, - '&': true, - '\'': true, - '*': true, - '+': true, - '-': true, - '.': true, - '0': true, - '1': true, - '2': true, - '3': true, - '4': true, - '5': true, - '6': true, - '7': true, - '8': true, - '9': true, - 'A': true, - 'B': true, - 'C': true, - 'D': true, - 'E': true, - 'F': true, - 'G': true, - 'H': true, - 'I': true, - 'J': true, - 'K': true, - 'L': true, - 'M': true, - 'N': true, - 'O': true, - 'P': true, - 'Q': true, - 'R': true, - 'S': true, - 'T': true, - 'U': true, - 'W': true, - 'V': true, - 'X': true, - 'Y': true, - 'Z': true, - '^': true, - '_': true, - '`': true, - 'a': true, - 'b': true, - 'c': true, - 'd': true, - 'e': true, - 'f': true, - 'g': true, - 'h': true, - 'i': true, - 'j': true, - 'k': true, - 'l': true, - 'm': true, - 'n': true, - 'o': true, - 'p': true, - 'q': true, - 'r': true, - 's': true, - 't': true, - 'u': true, - 'v': true, - 'w': true, - 'x': true, - 'y': true, - 'z': true, - '|': true, - '~': true, -} - -func IsTokenRune(r rune) bool { - i := int(r) - return i < len(isTokenTable) && isTokenTable[i] -} - -func isNotToken(r rune) bool { - return !IsTokenRune(r) -} - -// HeaderValuesContainsToken reports whether any string in values -// contains the provided token, ASCII case-insensitively. -func HeaderValuesContainsToken(values []string, token string) bool { - for _, v := range values { - if headerValueContainsToken(v, token) { - return true - } - } - return false -} - -// isOWS reports whether b is an optional whitespace byte, as defined -// by RFC 7230 section 3.2.3. -func isOWS(b byte) bool { return b == ' ' || b == '\t' } - -// trimOWS returns x with all optional whitespace removes from the -// beginning and end. -func trimOWS(x string) string { - // TODO: consider using strings.Trim(x, " \t") instead, - // if and when it's fast enough. See issue 10292. - // But this ASCII-only code will probably always beat UTF-8 - // aware code. - for len(x) > 0 && isOWS(x[0]) { - x = x[1:] - } - for len(x) > 0 && isOWS(x[len(x)-1]) { - x = x[:len(x)-1] - } - return x -} - -// headerValueContainsToken reports whether v (assumed to be a -// 0#element, in the ABNF extension described in RFC 7230 section 7) -// contains token amongst its comma-separated tokens, ASCII -// case-insensitively. -func headerValueContainsToken(v string, token string) bool { - v = trimOWS(v) - if comma := strings.IndexByte(v, ','); comma != -1 { - return tokenEqual(trimOWS(v[:comma]), token) || headerValueContainsToken(v[comma+1:], token) - } - return tokenEqual(v, token) -} - -// lowerASCII returns the ASCII lowercase version of b. -func lowerASCII(b byte) byte { - if 'A' <= b && b <= 'Z' { - return b + ('a' - 'A') - } - return b -} - -// tokenEqual reports whether t1 and t2 are equal, ASCII case-insensitively. -func tokenEqual(t1, t2 string) bool { - if len(t1) != len(t2) { - return false - } - for i, b := range t1 { - if b >= utf8.RuneSelf { - // No UTF-8 or non-ASCII allowed in tokens. - return false - } - if lowerASCII(byte(b)) != lowerASCII(t2[i]) { - return false - } - } - return true -} - -// isLWS reports whether b is linear white space, according -// to http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2 -// LWS = [CRLF] 1*( SP | HT ) -func isLWS(b byte) bool { return b == ' ' || b == '\t' } - -// isCTL reports whether b is a control byte, according -// to http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2 -// CTL = -func isCTL(b byte) bool { - const del = 0x7f // a CTL - return b < ' ' || b == del -} - -// ValidHeaderFieldName reports whether v is a valid HTTP/1.x header name. -// HTTP/2 imposes the additional restriction that uppercase ASCII -// letters are not allowed. -// -// RFC 7230 says: -// header-field = field-name ":" OWS field-value OWS -// field-name = token -// token = 1*tchar -// tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." / -// "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA -func ValidHeaderFieldName(v string) bool { - if len(v) == 0 { - return false - } - for _, r := range v { - if !IsTokenRune(r) { - return false - } - } - return true -} - -// ValidHostHeader reports whether h is a valid host header. -func ValidHostHeader(h string) bool { - // The latest spec is actually this: - // - // http://tools.ietf.org/html/rfc7230#section-5.4 - // Host = uri-host [ ":" port ] - // - // Where uri-host is: - // http://tools.ietf.org/html/rfc3986#section-3.2.2 - // - // But we're going to be much more lenient for now and just - // search for any byte that's not a valid byte in any of those - // expressions. - for i := 0; i < len(h); i++ { - if !validHostByte[h[i]] { - return false - } - } - return true -} - -// See the validHostHeader comment. -var validHostByte = [256]bool{ - '0': true, '1': true, '2': true, '3': true, '4': true, '5': true, '6': true, '7': true, - '8': true, '9': true, - - 'a': true, 'b': true, 'c': true, 'd': true, 'e': true, 'f': true, 'g': true, 'h': true, - 'i': true, 'j': true, 'k': true, 'l': true, 'm': true, 'n': true, 'o': true, 'p': true, - 'q': true, 'r': true, 's': true, 't': true, 'u': true, 'v': true, 'w': true, 'x': true, - 'y': true, 'z': true, - - 'A': true, 'B': true, 'C': true, 'D': true, 'E': true, 'F': true, 'G': true, 'H': true, - 'I': true, 'J': true, 'K': true, 'L': true, 'M': true, 'N': true, 'O': true, 'P': true, - 'Q': true, 'R': true, 'S': true, 'T': true, 'U': true, 'V': true, 'W': true, 'X': true, - 'Y': true, 'Z': true, - - '!': true, // sub-delims - '$': true, // sub-delims - '%': true, // pct-encoded (and used in IPv6 zones) - '&': true, // sub-delims - '(': true, // sub-delims - ')': true, // sub-delims - '*': true, // sub-delims - '+': true, // sub-delims - ',': true, // sub-delims - '-': true, // unreserved - '.': true, // unreserved - ':': true, // IPv6address + Host expression's optional port - ';': true, // sub-delims - '=': true, // sub-delims - '[': true, - '\'': true, // sub-delims - ']': true, - '_': true, // unreserved - '~': true, // unreserved -} - -// ValidHeaderFieldValue reports whether v is a valid "field-value" according to -// http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2 : -// -// message-header = field-name ":" [ field-value ] -// field-value = *( field-content | LWS ) -// field-content = -// -// http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2 : -// -// TEXT = -// LWS = [CRLF] 1*( SP | HT ) -// CTL = -// -// RFC 7230 says: -// field-value = *( field-content / obs-fold ) -// obj-fold = N/A to http2, and deprecated -// field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ] -// field-vchar = VCHAR / obs-text -// obs-text = %x80-FF -// VCHAR = "any visible [USASCII] character" -// -// http2 further says: "Similarly, HTTP/2 allows header field values -// that are not valid. While most of the values that can be encoded -// will not alter header field parsing, carriage return (CR, ASCII -// 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL, ASCII -// 0x0) might be exploited by an attacker if they are translated -// verbatim. Any request or response that contains a character not -// permitted in a header field value MUST be treated as malformed -// (Section 8.1.2.6). Valid characters are defined by the -// field-content ABNF rule in Section 3.2 of [RFC7230]." -// -// This function does not (yet?) properly handle the rejection of -// strings that begin or end with SP or HTAB. -func ValidHeaderFieldValue(v string) bool { - for i := 0; i < len(v); i++ { - b := v[i] - if isCTL(b) && !isLWS(b) { - return false - } - } - return true -} diff --git a/vendor/golang.org/x/net/trace/events.go b/vendor/golang.org/x/net/trace/events.go deleted file mode 100644 index e66c7e3282..0000000000 --- a/vendor/golang.org/x/net/trace/events.go +++ /dev/null @@ -1,524 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package trace - -import ( - "bytes" - "fmt" - "html/template" - "io" - "log" - "net/http" - "runtime" - "sort" - "strconv" - "strings" - "sync" - "sync/atomic" - "text/tabwriter" - "time" -) - -var eventsTmpl = template.Must(template.New("events").Funcs(template.FuncMap{ - "elapsed": elapsed, - "trimSpace": strings.TrimSpace, -}).Parse(eventsHTML)) - -const maxEventsPerLog = 100 - -type bucket struct { - MaxErrAge time.Duration - String string -} - -var buckets = []bucket{ - {0, "total"}, - {10 * time.Second, "errs<10s"}, - {1 * time.Minute, "errs<1m"}, - {10 * time.Minute, "errs<10m"}, - {1 * time.Hour, "errs<1h"}, - {10 * time.Hour, "errs<10h"}, - {24000 * time.Hour, "errors"}, -} - -// RenderEvents renders the HTML page typically served at /debug/events. -// It does not do any auth checking; see AuthRequest for the default auth check -// used by the handler registered on http.DefaultServeMux. -// req may be nil. -func RenderEvents(w http.ResponseWriter, req *http.Request, sensitive bool) { - now := time.Now() - data := &struct { - Families []string // family names - Buckets []bucket - Counts [][]int // eventLog count per family/bucket - - // Set when a bucket has been selected. - Family string - Bucket int - EventLogs eventLogs - Expanded bool - }{ - Buckets: buckets, - } - - data.Families = make([]string, 0, len(families)) - famMu.RLock() - for name := range families { - data.Families = append(data.Families, name) - } - famMu.RUnlock() - sort.Strings(data.Families) - - // Count the number of eventLogs in each family for each error age. - data.Counts = make([][]int, len(data.Families)) - for i, name := range data.Families { - // TODO(sameer): move this loop under the family lock. - f := getEventFamily(name) - data.Counts[i] = make([]int, len(data.Buckets)) - for j, b := range data.Buckets { - data.Counts[i][j] = f.Count(now, b.MaxErrAge) - } - } - - if req != nil { - var ok bool - data.Family, data.Bucket, ok = parseEventsArgs(req) - if !ok { - // No-op - } else { - data.EventLogs = getEventFamily(data.Family).Copy(now, buckets[data.Bucket].MaxErrAge) - } - if data.EventLogs != nil { - defer data.EventLogs.Free() - sort.Sort(data.EventLogs) - } - if exp, err := strconv.ParseBool(req.FormValue("exp")); err == nil { - data.Expanded = exp - } - } - - famMu.RLock() - defer famMu.RUnlock() - if err := eventsTmpl.Execute(w, data); err != nil { - log.Printf("net/trace: Failed executing template: %v", err) - } -} - -func parseEventsArgs(req *http.Request) (fam string, b int, ok bool) { - fam, bStr := req.FormValue("fam"), req.FormValue("b") - if fam == "" || bStr == "" { - return "", 0, false - } - b, err := strconv.Atoi(bStr) - if err != nil || b < 0 || b >= len(buckets) { - return "", 0, false - } - return fam, b, true -} - -// An EventLog provides a log of events associated with a specific object. -type EventLog interface { - // Printf formats its arguments with fmt.Sprintf and adds the - // result to the event log. - Printf(format string, a ...interface{}) - - // Errorf is like Printf, but it marks this event as an error. - Errorf(format string, a ...interface{}) - - // Finish declares that this event log is complete. - // The event log should not be used after calling this method. - Finish() -} - -// NewEventLog returns a new EventLog with the specified family name -// and title. -func NewEventLog(family, title string) EventLog { - el := newEventLog() - el.ref() - el.Family, el.Title = family, title - el.Start = time.Now() - el.events = make([]logEntry, 0, maxEventsPerLog) - el.stack = make([]uintptr, 32) - n := runtime.Callers(2, el.stack) - el.stack = el.stack[:n] - - getEventFamily(family).add(el) - return el -} - -func (el *eventLog) Finish() { - getEventFamily(el.Family).remove(el) - el.unref() // matches ref in New -} - -var ( - famMu sync.RWMutex - families = make(map[string]*eventFamily) // family name => family -) - -func getEventFamily(fam string) *eventFamily { - famMu.Lock() - defer famMu.Unlock() - f := families[fam] - if f == nil { - f = &eventFamily{} - families[fam] = f - } - return f -} - -type eventFamily struct { - mu sync.RWMutex - eventLogs eventLogs -} - -func (f *eventFamily) add(el *eventLog) { - f.mu.Lock() - f.eventLogs = append(f.eventLogs, el) - f.mu.Unlock() -} - -func (f *eventFamily) remove(el *eventLog) { - f.mu.Lock() - defer f.mu.Unlock() - for i, el0 := range f.eventLogs { - if el == el0 { - copy(f.eventLogs[i:], f.eventLogs[i+1:]) - f.eventLogs = f.eventLogs[:len(f.eventLogs)-1] - return - } - } -} - -func (f *eventFamily) Count(now time.Time, maxErrAge time.Duration) (n int) { - f.mu.RLock() - defer f.mu.RUnlock() - for _, el := range f.eventLogs { - if el.hasRecentError(now, maxErrAge) { - n++ - } - } - return -} - -func (f *eventFamily) Copy(now time.Time, maxErrAge time.Duration) (els eventLogs) { - f.mu.RLock() - defer f.mu.RUnlock() - els = make(eventLogs, 0, len(f.eventLogs)) - for _, el := range f.eventLogs { - if el.hasRecentError(now, maxErrAge) { - el.ref() - els = append(els, el) - } - } - return -} - -type eventLogs []*eventLog - -// Free calls unref on each element of the list. -func (els eventLogs) Free() { - for _, el := range els { - el.unref() - } -} - -// eventLogs may be sorted in reverse chronological order. -func (els eventLogs) Len() int { return len(els) } -func (els eventLogs) Less(i, j int) bool { return els[i].Start.After(els[j].Start) } -func (els eventLogs) Swap(i, j int) { els[i], els[j] = els[j], els[i] } - -// A logEntry is a timestamped log entry in an event log. -type logEntry struct { - When time.Time - Elapsed time.Duration // since previous event in log - NewDay bool // whether this event is on a different day to the previous event - What string - IsErr bool -} - -// WhenString returns a string representation of the elapsed time of the event. -// It will include the date if midnight was crossed. -func (e logEntry) WhenString() string { - if e.NewDay { - return e.When.Format("2006/01/02 15:04:05.000000") - } - return e.When.Format("15:04:05.000000") -} - -// An eventLog represents an active event log. -type eventLog struct { - // Family is the top-level grouping of event logs to which this belongs. - Family string - - // Title is the title of this event log. - Title string - - // Timing information. - Start time.Time - - // Call stack where this event log was created. - stack []uintptr - - // Append-only sequence of events. - // - // TODO(sameer): change this to a ring buffer to avoid the array copy - // when we hit maxEventsPerLog. - mu sync.RWMutex - events []logEntry - LastErrorTime time.Time - discarded int - - refs int32 // how many buckets this is in -} - -func (el *eventLog) reset() { - // Clear all but the mutex. Mutexes may not be copied, even when unlocked. - el.Family = "" - el.Title = "" - el.Start = time.Time{} - el.stack = nil - el.events = nil - el.LastErrorTime = time.Time{} - el.discarded = 0 - el.refs = 0 -} - -func (el *eventLog) hasRecentError(now time.Time, maxErrAge time.Duration) bool { - if maxErrAge == 0 { - return true - } - el.mu.RLock() - defer el.mu.RUnlock() - return now.Sub(el.LastErrorTime) < maxErrAge -} - -// delta returns the elapsed time since the last event or the log start, -// and whether it spans midnight. -// L >= el.mu -func (el *eventLog) delta(t time.Time) (time.Duration, bool) { - if len(el.events) == 0 { - return t.Sub(el.Start), false - } - prev := el.events[len(el.events)-1].When - return t.Sub(prev), prev.Day() != t.Day() - -} - -func (el *eventLog) Printf(format string, a ...interface{}) { - el.printf(false, format, a...) -} - -func (el *eventLog) Errorf(format string, a ...interface{}) { - el.printf(true, format, a...) -} - -func (el *eventLog) printf(isErr bool, format string, a ...interface{}) { - e := logEntry{When: time.Now(), IsErr: isErr, What: fmt.Sprintf(format, a...)} - el.mu.Lock() - e.Elapsed, e.NewDay = el.delta(e.When) - if len(el.events) < maxEventsPerLog { - el.events = append(el.events, e) - } else { - // Discard the oldest event. - if el.discarded == 0 { - // el.discarded starts at two to count for the event it - // is replacing, plus the next one that we are about to - // drop. - el.discarded = 2 - } else { - el.discarded++ - } - // TODO(sameer): if this causes allocations on a critical path, - // change eventLog.What to be a fmt.Stringer, as in trace.go. - el.events[0].What = fmt.Sprintf("(%d events discarded)", el.discarded) - // The timestamp of the discarded meta-event should be - // the time of the last event it is representing. - el.events[0].When = el.events[1].When - copy(el.events[1:], el.events[2:]) - el.events[maxEventsPerLog-1] = e - } - if e.IsErr { - el.LastErrorTime = e.When - } - el.mu.Unlock() -} - -func (el *eventLog) ref() { - atomic.AddInt32(&el.refs, 1) -} - -func (el *eventLog) unref() { - if atomic.AddInt32(&el.refs, -1) == 0 { - freeEventLog(el) - } -} - -func (el *eventLog) When() string { - return el.Start.Format("2006/01/02 15:04:05.000000") -} - -func (el *eventLog) ElapsedTime() string { - elapsed := time.Since(el.Start) - return fmt.Sprintf("%.6f", elapsed.Seconds()) -} - -func (el *eventLog) Stack() string { - buf := new(bytes.Buffer) - tw := tabwriter.NewWriter(buf, 1, 8, 1, '\t', 0) - printStackRecord(tw, el.stack) - tw.Flush() - return buf.String() -} - -// printStackRecord prints the function + source line information -// for a single stack trace. -// Adapted from runtime/pprof/pprof.go. -func printStackRecord(w io.Writer, stk []uintptr) { - for _, pc := range stk { - f := runtime.FuncForPC(pc) - if f == nil { - continue - } - file, line := f.FileLine(pc) - name := f.Name() - // Hide runtime.goexit and any runtime functions at the beginning. - if strings.HasPrefix(name, "runtime.") { - continue - } - fmt.Fprintf(w, "# %s\t%s:%d\n", name, file, line) - } -} - -func (el *eventLog) Events() []logEntry { - el.mu.RLock() - defer el.mu.RUnlock() - return el.events -} - -// freeEventLogs is a freelist of *eventLog -var freeEventLogs = make(chan *eventLog, 1000) - -// newEventLog returns a event log ready to use. -func newEventLog() *eventLog { - select { - case el := <-freeEventLogs: - return el - default: - return new(eventLog) - } -} - -// freeEventLog adds el to freeEventLogs if there's room. -// This is non-blocking. -func freeEventLog(el *eventLog) { - el.reset() - select { - case freeEventLogs <- el: - default: - } -} - -const eventsHTML = ` - - - events - - - - -

/debug/events

- - - {{range $i, $fam := .Families}} - - - - {{range $j, $bucket := $.Buckets}} - {{$n := index $.Counts $i $j}} - - {{end}} - - {{end}} -
{{$fam}} - {{if $n}}{{end}} - [{{$n}} {{$bucket.String}}] - {{if $n}}{{end}} -
- -{{if $.EventLogs}} -
-

Family: {{$.Family}}

- -{{if $.Expanded}}{{end}} -[Summary]{{if $.Expanded}}{{end}} - -{{if not $.Expanded}}{{end}} -[Expanded]{{if not $.Expanded}}{{end}} - - - - {{range $el := $.EventLogs}} - - - - - {{if $.Expanded}} - - - - - - {{range $el.Events}} - - - - - - {{end}} - {{end}} - {{end}} -
WhenElapsed
{{$el.When}}{{$el.ElapsedTime}}{{$el.Title}} - 
{{$el.Stack|trimSpace}}
{{.WhenString}}{{elapsed .Elapsed}}.{{if .IsErr}}E{{else}}.{{end}}. {{.What}}
-{{end}} - - -` diff --git a/vendor/golang.org/x/net/trace/histogram.go b/vendor/golang.org/x/net/trace/histogram.go deleted file mode 100644 index bb42aa5320..0000000000 --- a/vendor/golang.org/x/net/trace/histogram.go +++ /dev/null @@ -1,356 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package trace - -// This file implements histogramming for RPC statistics collection. - -import ( - "bytes" - "fmt" - "html/template" - "log" - "math" - - "golang.org/x/net/internal/timeseries" -) - -const ( - bucketCount = 38 -) - -// histogram keeps counts of values in buckets that are spaced -// out in powers of 2: 0-1, 2-3, 4-7... -// histogram implements timeseries.Observable -type histogram struct { - sum int64 // running total of measurements - sumOfSquares float64 // square of running total - buckets []int64 // bucketed values for histogram - value int // holds a single value as an optimization - valueCount int64 // number of values recorded for single value -} - -// AddMeasurement records a value measurement observation to the histogram. -func (h *histogram) addMeasurement(value int64) { - // TODO: assert invariant - h.sum += value - h.sumOfSquares += float64(value) * float64(value) - - bucketIndex := getBucket(value) - - if h.valueCount == 0 || (h.valueCount > 0 && h.value == bucketIndex) { - h.value = bucketIndex - h.valueCount++ - } else { - h.allocateBuckets() - h.buckets[bucketIndex]++ - } -} - -func (h *histogram) allocateBuckets() { - if h.buckets == nil { - h.buckets = make([]int64, bucketCount) - h.buckets[h.value] = h.valueCount - h.value = 0 - h.valueCount = -1 - } -} - -func log2(i int64) int { - n := 0 - for ; i >= 0x100; i >>= 8 { - n += 8 - } - for ; i > 0; i >>= 1 { - n += 1 - } - return n -} - -func getBucket(i int64) (index int) { - index = log2(i) - 1 - if index < 0 { - index = 0 - } - if index >= bucketCount { - index = bucketCount - 1 - } - return -} - -// Total returns the number of recorded observations. -func (h *histogram) total() (total int64) { - if h.valueCount >= 0 { - total = h.valueCount - } - for _, val := range h.buckets { - total += int64(val) - } - return -} - -// Average returns the average value of recorded observations. -func (h *histogram) average() float64 { - t := h.total() - if t == 0 { - return 0 - } - return float64(h.sum) / float64(t) -} - -// Variance returns the variance of recorded observations. -func (h *histogram) variance() float64 { - t := float64(h.total()) - if t == 0 { - return 0 - } - s := float64(h.sum) / t - return h.sumOfSquares/t - s*s -} - -// StandardDeviation returns the standard deviation of recorded observations. -func (h *histogram) standardDeviation() float64 { - return math.Sqrt(h.variance()) -} - -// PercentileBoundary estimates the value that the given fraction of recorded -// observations are less than. -func (h *histogram) percentileBoundary(percentile float64) int64 { - total := h.total() - - // Corner cases (make sure result is strictly less than Total()) - if total == 0 { - return 0 - } else if total == 1 { - return int64(h.average()) - } - - percentOfTotal := round(float64(total) * percentile) - var runningTotal int64 - - for i := range h.buckets { - value := h.buckets[i] - runningTotal += value - if runningTotal == percentOfTotal { - // We hit an exact bucket boundary. If the next bucket has data, it is a - // good estimate of the value. If the bucket is empty, we interpolate the - // midpoint between the next bucket's boundary and the next non-zero - // bucket. If the remaining buckets are all empty, then we use the - // boundary for the next bucket as the estimate. - j := uint8(i + 1) - min := bucketBoundary(j) - if runningTotal < total { - for h.buckets[j] == 0 { - j++ - } - } - max := bucketBoundary(j) - return min + round(float64(max-min)/2) - } else if runningTotal > percentOfTotal { - // The value is in this bucket. Interpolate the value. - delta := runningTotal - percentOfTotal - percentBucket := float64(value-delta) / float64(value) - bucketMin := bucketBoundary(uint8(i)) - nextBucketMin := bucketBoundary(uint8(i + 1)) - bucketSize := nextBucketMin - bucketMin - return bucketMin + round(percentBucket*float64(bucketSize)) - } - } - return bucketBoundary(bucketCount - 1) -} - -// Median returns the estimated median of the observed values. -func (h *histogram) median() int64 { - return h.percentileBoundary(0.5) -} - -// Add adds other to h. -func (h *histogram) Add(other timeseries.Observable) { - o := other.(*histogram) - if o.valueCount == 0 { - // Other histogram is empty - } else if h.valueCount >= 0 && o.valueCount > 0 && h.value == o.value { - // Both have a single bucketed value, aggregate them - h.valueCount += o.valueCount - } else { - // Two different values necessitate buckets in this histogram - h.allocateBuckets() - if o.valueCount >= 0 { - h.buckets[o.value] += o.valueCount - } else { - for i := range h.buckets { - h.buckets[i] += o.buckets[i] - } - } - } - h.sumOfSquares += o.sumOfSquares - h.sum += o.sum -} - -// Clear resets the histogram to an empty state, removing all observed values. -func (h *histogram) Clear() { - h.buckets = nil - h.value = 0 - h.valueCount = 0 - h.sum = 0 - h.sumOfSquares = 0 -} - -// CopyFrom copies from other, which must be a *histogram, into h. -func (h *histogram) CopyFrom(other timeseries.Observable) { - o := other.(*histogram) - if o.valueCount == -1 { - h.allocateBuckets() - copy(h.buckets, o.buckets) - } - h.sum = o.sum - h.sumOfSquares = o.sumOfSquares - h.value = o.value - h.valueCount = o.valueCount -} - -// Multiply scales the histogram by the specified ratio. -func (h *histogram) Multiply(ratio float64) { - if h.valueCount == -1 { - for i := range h.buckets { - h.buckets[i] = int64(float64(h.buckets[i]) * ratio) - } - } else { - h.valueCount = int64(float64(h.valueCount) * ratio) - } - h.sum = int64(float64(h.sum) * ratio) - h.sumOfSquares = h.sumOfSquares * ratio -} - -// New creates a new histogram. -func (h *histogram) New() timeseries.Observable { - r := new(histogram) - r.Clear() - return r -} - -func (h *histogram) String() string { - return fmt.Sprintf("%d, %f, %d, %d, %v", - h.sum, h.sumOfSquares, h.value, h.valueCount, h.buckets) -} - -// round returns the closest int64 to the argument -func round(in float64) int64 { - return int64(math.Floor(in + 0.5)) -} - -// bucketBoundary returns the first value in the bucket. -func bucketBoundary(bucket uint8) int64 { - if bucket == 0 { - return 0 - } - return 1 << bucket -} - -// bucketData holds data about a specific bucket for use in distTmpl. -type bucketData struct { - Lower, Upper int64 - N int64 - Pct, CumulativePct float64 - GraphWidth int -} - -// data holds data about a Distribution for use in distTmpl. -type data struct { - Buckets []*bucketData - Count, Median int64 - Mean, StandardDeviation float64 -} - -// maxHTMLBarWidth is the maximum width of the HTML bar for visualizing buckets. -const maxHTMLBarWidth = 350.0 - -// newData returns data representing h for use in distTmpl. -func (h *histogram) newData() *data { - // Force the allocation of buckets to simplify the rendering implementation - h.allocateBuckets() - // We scale the bars on the right so that the largest bar is - // maxHTMLBarWidth pixels in width. - maxBucket := int64(0) - for _, n := range h.buckets { - if n > maxBucket { - maxBucket = n - } - } - total := h.total() - barsizeMult := maxHTMLBarWidth / float64(maxBucket) - var pctMult float64 - if total == 0 { - pctMult = 1.0 - } else { - pctMult = 100.0 / float64(total) - } - - buckets := make([]*bucketData, len(h.buckets)) - runningTotal := int64(0) - for i, n := range h.buckets { - if n == 0 { - continue - } - runningTotal += n - var upperBound int64 - if i < bucketCount-1 { - upperBound = bucketBoundary(uint8(i + 1)) - } else { - upperBound = math.MaxInt64 - } - buckets[i] = &bucketData{ - Lower: bucketBoundary(uint8(i)), - Upper: upperBound, - N: n, - Pct: float64(n) * pctMult, - CumulativePct: float64(runningTotal) * pctMult, - GraphWidth: int(float64(n) * barsizeMult), - } - } - return &data{ - Buckets: buckets, - Count: total, - Median: h.median(), - Mean: h.average(), - StandardDeviation: h.standardDeviation(), - } -} - -func (h *histogram) html() template.HTML { - buf := new(bytes.Buffer) - if err := distTmpl.Execute(buf, h.newData()); err != nil { - buf.Reset() - log.Printf("net/trace: couldn't execute template: %v", err) - } - return template.HTML(buf.String()) -} - -// Input: data -var distTmpl = template.Must(template.New("distTmpl").Parse(` - - - - - - - -
Count: {{.Count}}Mean: {{printf "%.0f" .Mean}}StdDev: {{printf "%.0f" .StandardDeviation}}Median: {{.Median}}
-
- -{{range $b := .Buckets}} -{{if $b}} - - - - - - - - - -{{end}} -{{end}} -
[{{.Lower}},{{.Upper}}){{.N}}{{printf "%#.3f" .Pct}}%{{printf "%#.3f" .CumulativePct}}%
-`)) diff --git a/vendor/golang.org/x/net/trace/trace.go b/vendor/golang.org/x/net/trace/trace.go deleted file mode 100644 index d860fccf9b..0000000000 --- a/vendor/golang.org/x/net/trace/trace.go +++ /dev/null @@ -1,1063 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -/* -Package trace implements tracing of requests and long-lived objects. -It exports HTTP interfaces on /debug/requests and /debug/events. - -A trace.Trace provides tracing for short-lived objects, usually requests. -A request handler might be implemented like this: - - func fooHandler(w http.ResponseWriter, req *http.Request) { - tr := trace.New("mypkg.Foo", req.URL.Path) - defer tr.Finish() - ... - tr.LazyPrintf("some event %q happened", str) - ... - if err := somethingImportant(); err != nil { - tr.LazyPrintf("somethingImportant failed: %v", err) - tr.SetError() - } - } - -The /debug/requests HTTP endpoint organizes the traces by family, -errors, and duration. It also provides histogram of request duration -for each family. - -A trace.EventLog provides tracing for long-lived objects, such as RPC -connections. - - // A Fetcher fetches URL paths for a single domain. - type Fetcher struct { - domain string - events trace.EventLog - } - - func NewFetcher(domain string) *Fetcher { - return &Fetcher{ - domain, - trace.NewEventLog("mypkg.Fetcher", domain), - } - } - - func (f *Fetcher) Fetch(path string) (string, error) { - resp, err := http.Get("http://" + f.domain + "/" + path) - if err != nil { - f.events.Errorf("Get(%q) = %v", path, err) - return "", err - } - f.events.Printf("Get(%q) = %s", path, resp.Status) - ... - } - - func (f *Fetcher) Close() error { - f.events.Finish() - return nil - } - -The /debug/events HTTP endpoint organizes the event logs by family and -by time since the last error. The expanded view displays recent log -entries and the log's call stack. -*/ -package trace // import "golang.org/x/net/trace" - -import ( - "bytes" - "fmt" - "html/template" - "io" - "log" - "net" - "net/http" - "runtime" - "sort" - "strconv" - "sync" - "sync/atomic" - "time" - - "golang.org/x/net/context" - "golang.org/x/net/internal/timeseries" -) - -// DebugUseAfterFinish controls whether to debug uses of Trace values after finishing. -// FOR DEBUGGING ONLY. This will slow down the program. -var DebugUseAfterFinish = false - -// AuthRequest determines whether a specific request is permitted to load the -// /debug/requests or /debug/events pages. -// -// It returns two bools; the first indicates whether the page may be viewed at all, -// and the second indicates whether sensitive events will be shown. -// -// AuthRequest may be replaced by a program to customise its authorisation requirements. -// -// The default AuthRequest function returns (true, true) if and only if the request -// comes from localhost/127.0.0.1/[::1]. -var AuthRequest = func(req *http.Request) (any, sensitive bool) { - // RemoteAddr is commonly in the form "IP" or "IP:port". - // If it is in the form "IP:port", split off the port. - host, _, err := net.SplitHostPort(req.RemoteAddr) - if err != nil { - host = req.RemoteAddr - } - switch host { - case "localhost", "127.0.0.1", "::1": - return true, true - default: - return false, false - } -} - -func init() { - http.HandleFunc("/debug/requests", func(w http.ResponseWriter, req *http.Request) { - any, sensitive := AuthRequest(req) - if !any { - http.Error(w, "not allowed", http.StatusUnauthorized) - return - } - w.Header().Set("Content-Type", "text/html; charset=utf-8") - Render(w, req, sensitive) - }) - http.HandleFunc("/debug/events", func(w http.ResponseWriter, req *http.Request) { - any, sensitive := AuthRequest(req) - if !any { - http.Error(w, "not allowed", http.StatusUnauthorized) - return - } - w.Header().Set("Content-Type", "text/html; charset=utf-8") - RenderEvents(w, req, sensitive) - }) -} - -// Render renders the HTML page typically served at /debug/requests. -// It does not do any auth checking; see AuthRequest for the default auth check -// used by the handler registered on http.DefaultServeMux. -// req may be nil. -func Render(w io.Writer, req *http.Request, sensitive bool) { - data := &struct { - Families []string - ActiveTraceCount map[string]int - CompletedTraces map[string]*family - - // Set when a bucket has been selected. - Traces traceList - Family string - Bucket int - Expanded bool - Traced bool - Active bool - ShowSensitive bool // whether to show sensitive events - - Histogram template.HTML - HistogramWindow string // e.g. "last minute", "last hour", "all time" - - // If non-zero, the set of traces is a partial set, - // and this is the total number. - Total int - }{ - CompletedTraces: completedTraces, - } - - data.ShowSensitive = sensitive - if req != nil { - // Allow show_sensitive=0 to force hiding of sensitive data for testing. - // This only goes one way; you can't use show_sensitive=1 to see things. - if req.FormValue("show_sensitive") == "0" { - data.ShowSensitive = false - } - - if exp, err := strconv.ParseBool(req.FormValue("exp")); err == nil { - data.Expanded = exp - } - if exp, err := strconv.ParseBool(req.FormValue("rtraced")); err == nil { - data.Traced = exp - } - } - - completedMu.RLock() - data.Families = make([]string, 0, len(completedTraces)) - for fam := range completedTraces { - data.Families = append(data.Families, fam) - } - completedMu.RUnlock() - sort.Strings(data.Families) - - // We are careful here to minimize the time spent locking activeMu, - // since that lock is required every time an RPC starts and finishes. - data.ActiveTraceCount = make(map[string]int, len(data.Families)) - activeMu.RLock() - for fam, s := range activeTraces { - data.ActiveTraceCount[fam] = s.Len() - } - activeMu.RUnlock() - - var ok bool - data.Family, data.Bucket, ok = parseArgs(req) - switch { - case !ok: - // No-op - case data.Bucket == -1: - data.Active = true - n := data.ActiveTraceCount[data.Family] - data.Traces = getActiveTraces(data.Family) - if len(data.Traces) < n { - data.Total = n - } - case data.Bucket < bucketsPerFamily: - if b := lookupBucket(data.Family, data.Bucket); b != nil { - data.Traces = b.Copy(data.Traced) - } - default: - if f := getFamily(data.Family, false); f != nil { - var obs timeseries.Observable - f.LatencyMu.RLock() - switch o := data.Bucket - bucketsPerFamily; o { - case 0: - obs = f.Latency.Minute() - data.HistogramWindow = "last minute" - case 1: - obs = f.Latency.Hour() - data.HistogramWindow = "last hour" - case 2: - obs = f.Latency.Total() - data.HistogramWindow = "all time" - } - f.LatencyMu.RUnlock() - if obs != nil { - data.Histogram = obs.(*histogram).html() - } - } - } - - if data.Traces != nil { - defer data.Traces.Free() - sort.Sort(data.Traces) - } - - completedMu.RLock() - defer completedMu.RUnlock() - if err := pageTmpl.ExecuteTemplate(w, "Page", data); err != nil { - log.Printf("net/trace: Failed executing template: %v", err) - } -} - -func parseArgs(req *http.Request) (fam string, b int, ok bool) { - if req == nil { - return "", 0, false - } - fam, bStr := req.FormValue("fam"), req.FormValue("b") - if fam == "" || bStr == "" { - return "", 0, false - } - b, err := strconv.Atoi(bStr) - if err != nil || b < -1 { - return "", 0, false - } - - return fam, b, true -} - -func lookupBucket(fam string, b int) *traceBucket { - f := getFamily(fam, false) - if f == nil || b < 0 || b >= len(f.Buckets) { - return nil - } - return f.Buckets[b] -} - -type contextKeyT string - -var contextKey = contextKeyT("golang.org/x/net/trace.Trace") - -// NewContext returns a copy of the parent context -// and associates it with a Trace. -func NewContext(ctx context.Context, tr Trace) context.Context { - return context.WithValue(ctx, contextKey, tr) -} - -// FromContext returns the Trace bound to the context, if any. -func FromContext(ctx context.Context) (tr Trace, ok bool) { - tr, ok = ctx.Value(contextKey).(Trace) - return -} - -// Trace represents an active request. -type Trace interface { - // LazyLog adds x to the event log. It will be evaluated each time the - // /debug/requests page is rendered. Any memory referenced by x will be - // pinned until the trace is finished and later discarded. - LazyLog(x fmt.Stringer, sensitive bool) - - // LazyPrintf evaluates its arguments with fmt.Sprintf each time the - // /debug/requests page is rendered. Any memory referenced by a will be - // pinned until the trace is finished and later discarded. - LazyPrintf(format string, a ...interface{}) - - // SetError declares that this trace resulted in an error. - SetError() - - // SetRecycler sets a recycler for the trace. - // f will be called for each event passed to LazyLog at a time when - // it is no longer required, whether while the trace is still active - // and the event is discarded, or when a completed trace is discarded. - SetRecycler(f func(interface{})) - - // SetTraceInfo sets the trace info for the trace. - // This is currently unused. - SetTraceInfo(traceID, spanID uint64) - - // SetMaxEvents sets the maximum number of events that will be stored - // in the trace. This has no effect if any events have already been - // added to the trace. - SetMaxEvents(m int) - - // Finish declares that this trace is complete. - // The trace should not be used after calling this method. - Finish() -} - -type lazySprintf struct { - format string - a []interface{} -} - -func (l *lazySprintf) String() string { - return fmt.Sprintf(l.format, l.a...) -} - -// New returns a new Trace with the specified family and title. -func New(family, title string) Trace { - tr := newTrace() - tr.ref() - tr.Family, tr.Title = family, title - tr.Start = time.Now() - tr.events = make([]event, 0, maxEventsPerTrace) - - activeMu.RLock() - s := activeTraces[tr.Family] - activeMu.RUnlock() - if s == nil { - activeMu.Lock() - s = activeTraces[tr.Family] // check again - if s == nil { - s = new(traceSet) - activeTraces[tr.Family] = s - } - activeMu.Unlock() - } - s.Add(tr) - - // Trigger allocation of the completed trace structure for this family. - // This will cause the family to be present in the request page during - // the first trace of this family. We don't care about the return value, - // nor is there any need for this to run inline, so we execute it in its - // own goroutine, but only if the family isn't allocated yet. - completedMu.RLock() - if _, ok := completedTraces[tr.Family]; !ok { - go allocFamily(tr.Family) - } - completedMu.RUnlock() - - return tr -} - -func (tr *trace) Finish() { - tr.Elapsed = time.Now().Sub(tr.Start) - if DebugUseAfterFinish { - buf := make([]byte, 4<<10) // 4 KB should be enough - n := runtime.Stack(buf, false) - tr.finishStack = buf[:n] - } - - activeMu.RLock() - m := activeTraces[tr.Family] - activeMu.RUnlock() - m.Remove(tr) - - f := getFamily(tr.Family, true) - for _, b := range f.Buckets { - if b.Cond.match(tr) { - b.Add(tr) - } - } - // Add a sample of elapsed time as microseconds to the family's timeseries - h := new(histogram) - h.addMeasurement(tr.Elapsed.Nanoseconds() / 1e3) - f.LatencyMu.Lock() - f.Latency.Add(h) - f.LatencyMu.Unlock() - - tr.unref() // matches ref in New -} - -const ( - bucketsPerFamily = 9 - tracesPerBucket = 10 - maxActiveTraces = 20 // Maximum number of active traces to show. - maxEventsPerTrace = 10 - numHistogramBuckets = 38 -) - -var ( - // The active traces. - activeMu sync.RWMutex - activeTraces = make(map[string]*traceSet) // family -> traces - - // Families of completed traces. - completedMu sync.RWMutex - completedTraces = make(map[string]*family) // family -> traces -) - -type traceSet struct { - mu sync.RWMutex - m map[*trace]bool - - // We could avoid the entire map scan in FirstN by having a slice of all the traces - // ordered by start time, and an index into that from the trace struct, with a periodic - // repack of the slice after enough traces finish; we could also use a skip list or similar. - // However, that would shift some of the expense from /debug/requests time to RPC time, - // which is probably the wrong trade-off. -} - -func (ts *traceSet) Len() int { - ts.mu.RLock() - defer ts.mu.RUnlock() - return len(ts.m) -} - -func (ts *traceSet) Add(tr *trace) { - ts.mu.Lock() - if ts.m == nil { - ts.m = make(map[*trace]bool) - } - ts.m[tr] = true - ts.mu.Unlock() -} - -func (ts *traceSet) Remove(tr *trace) { - ts.mu.Lock() - delete(ts.m, tr) - ts.mu.Unlock() -} - -// FirstN returns the first n traces ordered by time. -func (ts *traceSet) FirstN(n int) traceList { - ts.mu.RLock() - defer ts.mu.RUnlock() - - if n > len(ts.m) { - n = len(ts.m) - } - trl := make(traceList, 0, n) - - // Fast path for when no selectivity is needed. - if n == len(ts.m) { - for tr := range ts.m { - tr.ref() - trl = append(trl, tr) - } - sort.Sort(trl) - return trl - } - - // Pick the oldest n traces. - // This is inefficient. See the comment in the traceSet struct. - for tr := range ts.m { - // Put the first n traces into trl in the order they occur. - // When we have n, sort trl, and thereafter maintain its order. - if len(trl) < n { - tr.ref() - trl = append(trl, tr) - if len(trl) == n { - // This is guaranteed to happen exactly once during this loop. - sort.Sort(trl) - } - continue - } - if tr.Start.After(trl[n-1].Start) { - continue - } - - // Find where to insert this one. - tr.ref() - i := sort.Search(n, func(i int) bool { return trl[i].Start.After(tr.Start) }) - trl[n-1].unref() - copy(trl[i+1:], trl[i:]) - trl[i] = tr - } - - return trl -} - -func getActiveTraces(fam string) traceList { - activeMu.RLock() - s := activeTraces[fam] - activeMu.RUnlock() - if s == nil { - return nil - } - return s.FirstN(maxActiveTraces) -} - -func getFamily(fam string, allocNew bool) *family { - completedMu.RLock() - f := completedTraces[fam] - completedMu.RUnlock() - if f == nil && allocNew { - f = allocFamily(fam) - } - return f -} - -func allocFamily(fam string) *family { - completedMu.Lock() - defer completedMu.Unlock() - f := completedTraces[fam] - if f == nil { - f = newFamily() - completedTraces[fam] = f - } - return f -} - -// family represents a set of trace buckets and associated latency information. -type family struct { - // traces may occur in multiple buckets. - Buckets [bucketsPerFamily]*traceBucket - - // latency time series - LatencyMu sync.RWMutex - Latency *timeseries.MinuteHourSeries -} - -func newFamily() *family { - return &family{ - Buckets: [bucketsPerFamily]*traceBucket{ - {Cond: minCond(0)}, - {Cond: minCond(50 * time.Millisecond)}, - {Cond: minCond(100 * time.Millisecond)}, - {Cond: minCond(200 * time.Millisecond)}, - {Cond: minCond(500 * time.Millisecond)}, - {Cond: minCond(1 * time.Second)}, - {Cond: minCond(10 * time.Second)}, - {Cond: minCond(100 * time.Second)}, - {Cond: errorCond{}}, - }, - Latency: timeseries.NewMinuteHourSeries(func() timeseries.Observable { return new(histogram) }), - } -} - -// traceBucket represents a size-capped bucket of historic traces, -// along with a condition for a trace to belong to the bucket. -type traceBucket struct { - Cond cond - - // Ring buffer implementation of a fixed-size FIFO queue. - mu sync.RWMutex - buf [tracesPerBucket]*trace - start int // < tracesPerBucket - length int // <= tracesPerBucket -} - -func (b *traceBucket) Add(tr *trace) { - b.mu.Lock() - defer b.mu.Unlock() - - i := b.start + b.length - if i >= tracesPerBucket { - i -= tracesPerBucket - } - if b.length == tracesPerBucket { - // "Remove" an element from the bucket. - b.buf[i].unref() - b.start++ - if b.start == tracesPerBucket { - b.start = 0 - } - } - b.buf[i] = tr - if b.length < tracesPerBucket { - b.length++ - } - tr.ref() -} - -// Copy returns a copy of the traces in the bucket. -// If tracedOnly is true, only the traces with trace information will be returned. -// The logs will be ref'd before returning; the caller should call -// the Free method when it is done with them. -// TODO(dsymonds): keep track of traced requests in separate buckets. -func (b *traceBucket) Copy(tracedOnly bool) traceList { - b.mu.RLock() - defer b.mu.RUnlock() - - trl := make(traceList, 0, b.length) - for i, x := 0, b.start; i < b.length; i++ { - tr := b.buf[x] - if !tracedOnly || tr.spanID != 0 { - tr.ref() - trl = append(trl, tr) - } - x++ - if x == b.length { - x = 0 - } - } - return trl -} - -func (b *traceBucket) Empty() bool { - b.mu.RLock() - defer b.mu.RUnlock() - return b.length == 0 -} - -// cond represents a condition on a trace. -type cond interface { - match(t *trace) bool - String() string -} - -type minCond time.Duration - -func (m minCond) match(t *trace) bool { return t.Elapsed >= time.Duration(m) } -func (m minCond) String() string { return fmt.Sprintf("≥%gs", time.Duration(m).Seconds()) } - -type errorCond struct{} - -func (e errorCond) match(t *trace) bool { return t.IsError } -func (e errorCond) String() string { return "errors" } - -type traceList []*trace - -// Free calls unref on each element of the list. -func (trl traceList) Free() { - for _, t := range trl { - t.unref() - } -} - -// traceList may be sorted in reverse chronological order. -func (trl traceList) Len() int { return len(trl) } -func (trl traceList) Less(i, j int) bool { return trl[i].Start.After(trl[j].Start) } -func (trl traceList) Swap(i, j int) { trl[i], trl[j] = trl[j], trl[i] } - -// An event is a timestamped log entry in a trace. -type event struct { - When time.Time - Elapsed time.Duration // since previous event in trace - NewDay bool // whether this event is on a different day to the previous event - Recyclable bool // whether this event was passed via LazyLog - What interface{} // string or fmt.Stringer - Sensitive bool // whether this event contains sensitive information -} - -// WhenString returns a string representation of the elapsed time of the event. -// It will include the date if midnight was crossed. -func (e event) WhenString() string { - if e.NewDay { - return e.When.Format("2006/01/02 15:04:05.000000") - } - return e.When.Format("15:04:05.000000") -} - -// discarded represents a number of discarded events. -// It is stored as *discarded to make it easier to update in-place. -type discarded int - -func (d *discarded) String() string { - return fmt.Sprintf("(%d events discarded)", int(*d)) -} - -// trace represents an active or complete request, -// either sent or received by this program. -type trace struct { - // Family is the top-level grouping of traces to which this belongs. - Family string - - // Title is the title of this trace. - Title string - - // Timing information. - Start time.Time - Elapsed time.Duration // zero while active - - // Trace information if non-zero. - traceID uint64 - spanID uint64 - - // Whether this trace resulted in an error. - IsError bool - - // Append-only sequence of events (modulo discards). - mu sync.RWMutex - events []event - - refs int32 // how many buckets this is in - recycler func(interface{}) - disc discarded // scratch space to avoid allocation - - finishStack []byte // where finish was called, if DebugUseAfterFinish is set -} - -func (tr *trace) reset() { - // Clear all but the mutex. Mutexes may not be copied, even when unlocked. - tr.Family = "" - tr.Title = "" - tr.Start = time.Time{} - tr.Elapsed = 0 - tr.traceID = 0 - tr.spanID = 0 - tr.IsError = false - tr.events = nil - tr.refs = 0 - tr.recycler = nil - tr.disc = 0 - tr.finishStack = nil -} - -// delta returns the elapsed time since the last event or the trace start, -// and whether it spans midnight. -// L >= tr.mu -func (tr *trace) delta(t time.Time) (time.Duration, bool) { - if len(tr.events) == 0 { - return t.Sub(tr.Start), false - } - prev := tr.events[len(tr.events)-1].When - return t.Sub(prev), prev.Day() != t.Day() -} - -func (tr *trace) addEvent(x interface{}, recyclable, sensitive bool) { - if DebugUseAfterFinish && tr.finishStack != nil { - buf := make([]byte, 4<<10) // 4 KB should be enough - n := runtime.Stack(buf, false) - log.Printf("net/trace: trace used after finish:\nFinished at:\n%s\nUsed at:\n%s", tr.finishStack, buf[:n]) - } - - /* - NOTE TO DEBUGGERS - - If you are here because your program panicked in this code, - it is almost definitely the fault of code using this package, - and very unlikely to be the fault of this code. - - The most likely scenario is that some code elsewhere is using - a requestz.Trace after its Finish method is called. - You can temporarily set the DebugUseAfterFinish var - to help discover where that is; do not leave that var set, - since it makes this package much less efficient. - */ - - e := event{When: time.Now(), What: x, Recyclable: recyclable, Sensitive: sensitive} - tr.mu.Lock() - e.Elapsed, e.NewDay = tr.delta(e.When) - if len(tr.events) < cap(tr.events) { - tr.events = append(tr.events, e) - } else { - // Discard the middle events. - di := int((cap(tr.events) - 1) / 2) - if d, ok := tr.events[di].What.(*discarded); ok { - (*d)++ - } else { - // disc starts at two to count for the event it is replacing, - // plus the next one that we are about to drop. - tr.disc = 2 - if tr.recycler != nil && tr.events[di].Recyclable { - go tr.recycler(tr.events[di].What) - } - tr.events[di].What = &tr.disc - } - // The timestamp of the discarded meta-event should be - // the time of the last event it is representing. - tr.events[di].When = tr.events[di+1].When - - if tr.recycler != nil && tr.events[di+1].Recyclable { - go tr.recycler(tr.events[di+1].What) - } - copy(tr.events[di+1:], tr.events[di+2:]) - tr.events[cap(tr.events)-1] = e - } - tr.mu.Unlock() -} - -func (tr *trace) LazyLog(x fmt.Stringer, sensitive bool) { - tr.addEvent(x, true, sensitive) -} - -func (tr *trace) LazyPrintf(format string, a ...interface{}) { - tr.addEvent(&lazySprintf{format, a}, false, false) -} - -func (tr *trace) SetError() { tr.IsError = true } - -func (tr *trace) SetRecycler(f func(interface{})) { - tr.recycler = f -} - -func (tr *trace) SetTraceInfo(traceID, spanID uint64) { - tr.traceID, tr.spanID = traceID, spanID -} - -func (tr *trace) SetMaxEvents(m int) { - // Always keep at least three events: first, discarded count, last. - if len(tr.events) == 0 && m > 3 { - tr.events = make([]event, 0, m) - } -} - -func (tr *trace) ref() { - atomic.AddInt32(&tr.refs, 1) -} - -func (tr *trace) unref() { - if atomic.AddInt32(&tr.refs, -1) == 0 { - if tr.recycler != nil { - // freeTrace clears tr, so we hold tr.recycler and tr.events here. - go func(f func(interface{}), es []event) { - for _, e := range es { - if e.Recyclable { - f(e.What) - } - } - }(tr.recycler, tr.events) - } - - freeTrace(tr) - } -} - -func (tr *trace) When() string { - return tr.Start.Format("2006/01/02 15:04:05.000000") -} - -func (tr *trace) ElapsedTime() string { - t := tr.Elapsed - if t == 0 { - // Active trace. - t = time.Since(tr.Start) - } - return fmt.Sprintf("%.6f", t.Seconds()) -} - -func (tr *trace) Events() []event { - tr.mu.RLock() - defer tr.mu.RUnlock() - return tr.events -} - -var traceFreeList = make(chan *trace, 1000) // TODO(dsymonds): Use sync.Pool? - -// newTrace returns a trace ready to use. -func newTrace() *trace { - select { - case tr := <-traceFreeList: - return tr - default: - return new(trace) - } -} - -// freeTrace adds tr to traceFreeList if there's room. -// This is non-blocking. -func freeTrace(tr *trace) { - if DebugUseAfterFinish { - return // never reuse - } - tr.reset() - select { - case traceFreeList <- tr: - default: - } -} - -func elapsed(d time.Duration) string { - b := []byte(fmt.Sprintf("%.6f", d.Seconds())) - - // For subsecond durations, blank all zeros before decimal point, - // and all zeros between the decimal point and the first non-zero digit. - if d < time.Second { - dot := bytes.IndexByte(b, '.') - for i := 0; i < dot; i++ { - b[i] = ' ' - } - for i := dot + 1; i < len(b); i++ { - if b[i] == '0' { - b[i] = ' ' - } else { - break - } - } - } - - return string(b) -} - -var pageTmpl = template.Must(template.New("Page").Funcs(template.FuncMap{ - "elapsed": elapsed, - "add": func(a, b int) int { return a + b }, -}).Parse(pageHTML)) - -const pageHTML = ` -{{template "Prolog" .}} -{{template "StatusTable" .}} -{{template "Epilog" .}} - -{{define "Prolog"}} - - - /debug/requests - - - - -

/debug/requests

-{{end}} {{/* end of Prolog */}} - -{{define "StatusTable"}} - - {{range $fam := .Families}} - - - - {{$n := index $.ActiveTraceCount $fam}} - - - {{$f := index $.CompletedTraces $fam}} - {{range $i, $b := $f.Buckets}} - {{$empty := $b.Empty}} - - {{end}} - - {{$nb := len $f.Buckets}} - - - - - - {{end}} -
{{$fam}} - {{if $n}}{{end}} - [{{$n}} active] - {{if $n}}{{end}} - - {{if not $empty}}{{end}} - [{{.Cond}}] - {{if not $empty}}{{end}} - - [minute] - - [hour] - - [total] -
-{{end}} {{/* end of StatusTable */}} - -{{define "Epilog"}} -{{if $.Traces}} -
-

Family: {{$.Family}}

- -{{if or $.Expanded $.Traced}} - [Normal/Summary] -{{else}} - [Normal/Summary] -{{end}} - -{{if or (not $.Expanded) $.Traced}} - [Normal/Expanded] -{{else}} - [Normal/Expanded] -{{end}} - -{{if not $.Active}} - {{if or $.Expanded (not $.Traced)}} - [Traced/Summary] - {{else}} - [Traced/Summary] - {{end}} - {{if or (not $.Expanded) (not $.Traced)}} - [Traced/Expanded] - {{else}} - [Traced/Expanded] - {{end}} -{{end}} - -{{if $.Total}} -

Showing {{len $.Traces}} of {{$.Total}} traces.

-{{end}} - - - - - {{range $tr := $.Traces}} - - - - - {{/* TODO: include traceID/spanID */}} - - {{if $.Expanded}} - {{range $tr.Events}} - - - - - - {{end}} - {{end}} - {{end}} -
- {{if $.Active}}Active{{else}}Completed{{end}} Requests -
WhenElapsed (s)
{{$tr.When}}{{$tr.ElapsedTime}}{{$tr.Title}}
{{.WhenString}}{{elapsed .Elapsed}}{{if or $.ShowSensitive (not .Sensitive)}}... {{.What}}{{else}}[redacted]{{end}}
-{{end}} {{/* if $.Traces */}} - -{{if $.Histogram}} -

Latency (µs) of {{$.Family}} over {{$.HistogramWindow}}

-{{$.Histogram}} -{{end}} {{/* if $.Histogram */}} - - - -{{end}} {{/* end of Epilog */}} -` diff --git a/vendor/google.golang.org/grpc/CONTRIBUTING.md b/vendor/google.golang.org/grpc/CONTRIBUTING.md deleted file mode 100644 index 36cd6f7581..0000000000 --- a/vendor/google.golang.org/grpc/CONTRIBUTING.md +++ /dev/null @@ -1,46 +0,0 @@ -# How to contribute - -We definitely welcome patches and contribution to grpc! Here are some guidelines -and information about how to do so. - -## Sending patches - -### Getting started - -1. Check out the code: - - $ go get google.golang.org/grpc - $ cd $GOPATH/src/google.golang.org/grpc - -1. Create a fork of the grpc-go repository. -1. Add your fork as a remote: - - $ git remote add fork git@github.com:$YOURGITHUBUSERNAME/grpc-go.git - -1. Make changes, commit them. -1. Run the test suite: - - $ make test - -1. Push your changes to your fork: - - $ git push fork ... - -1. Open a pull request. - -## Legal requirements - -In order to protect both you and ourselves, you will need to sign the -[Contributor License Agreement](https://cla.developers.google.com/clas). - -## Filing Issues -When filing an issue, make sure to answer these five questions: - -1. What version of Go are you using (`go version`)? -2. What operating system and processor architecture are you using? -3. What did you do? -4. What did you expect to see? -5. What did you see instead? - -### Contributing code -Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file. diff --git a/vendor/google.golang.org/grpc/LICENSE b/vendor/google.golang.org/grpc/LICENSE deleted file mode 100644 index f4988b4507..0000000000 --- a/vendor/google.golang.org/grpc/LICENSE +++ /dev/null @@ -1,28 +0,0 @@ -Copyright 2014, Google Inc. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright -notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the following disclaimer -in the documentation and/or other materials provided with the -distribution. - * Neither the name of Google Inc. nor the names of its -contributors may be used to endorse or promote products derived from -this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/google.golang.org/grpc/Makefile b/vendor/google.golang.org/grpc/Makefile deleted file mode 100644 index 03bb01f0b3..0000000000 --- a/vendor/google.golang.org/grpc/Makefile +++ /dev/null @@ -1,52 +0,0 @@ -all: test testrace - -deps: - go get -d -v google.golang.org/grpc/... - -updatedeps: - go get -d -v -u -f google.golang.org/grpc/... - -testdeps: - go get -d -v -t google.golang.org/grpc/... - -updatetestdeps: - go get -d -v -t -u -f google.golang.org/grpc/... - -build: deps - go build google.golang.org/grpc/... - -proto: - @ if ! which protoc > /dev/null; then \ - echo "error: protoc not installed" >&2; \ - exit 1; \ - fi - go get -u -v github.com/golang/protobuf/protoc-gen-go - # use $$dir as the root for all proto files in the same directory - for dir in $$(git ls-files '*.proto' | xargs -n1 dirname | uniq); do \ - protoc -I $$dir --go_out=plugins=grpc:$$dir $$dir/*.proto; \ - done - -test: testdeps - go test -v -cpu 1,4 google.golang.org/grpc/... - -testrace: testdeps - go test -v -race -cpu 1,4 google.golang.org/grpc/... - -clean: - go clean -i google.golang.org/grpc/... - -coverage: testdeps - ./coverage.sh --coveralls - -.PHONY: \ - all \ - deps \ - updatedeps \ - testdeps \ - updatetestdeps \ - build \ - proto \ - test \ - testrace \ - clean \ - coverage diff --git a/vendor/google.golang.org/grpc/PATENTS b/vendor/google.golang.org/grpc/PATENTS deleted file mode 100644 index 69b47959fa..0000000000 --- a/vendor/google.golang.org/grpc/PATENTS +++ /dev/null @@ -1,22 +0,0 @@ -Additional IP Rights Grant (Patents) - -"This implementation" means the copyrightable works distributed by -Google as part of the gRPC project. - -Google hereby grants to You a perpetual, worldwide, non-exclusive, -no-charge, royalty-free, irrevocable (except as stated in this section) -patent license to make, have made, use, offer to sell, sell, import, -transfer and otherwise run, modify and propagate the contents of this -implementation of gRPC, where such license applies only to those patent -claims, both currently owned or controlled by Google and acquired in -the future, licensable by Google that are necessarily infringed by this -implementation of gRPC. This grant does not include claims that would be -infringed only as a consequence of further modification of this -implementation. If you or your agent or exclusive licensee institute or -order or agree to the institution of patent litigation against any -entity (including a cross-claim or counterclaim in a lawsuit) alleging -that this implementation of gRPC or any code incorporated within this -implementation of gRPC constitutes direct or contributory patent -infringement, or inducement of patent infringement, then any patent -rights granted to you under this License for this implementation of gRPC -shall terminate as of the date such litigation is filed. diff --git a/vendor/google.golang.org/grpc/README.md b/vendor/google.golang.org/grpc/README.md deleted file mode 100644 index 660658bed3..0000000000 --- a/vendor/google.golang.org/grpc/README.md +++ /dev/null @@ -1,32 +0,0 @@ -#gRPC-Go - -[![Build Status](https://travis-ci.org/grpc/grpc-go.svg)](https://travis-ci.org/grpc/grpc-go) [![GoDoc](https://godoc.org/google.golang.org/grpc?status.svg)](https://godoc.org/google.golang.org/grpc) - -The Go implementation of [gRPC](http://www.grpc.io/): A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. For more information see the [gRPC Quick Start](http://www.grpc.io/docs/) guide. - -Installation ------------- - -To install this package, you need to install Go and setup your Go workspace on your computer. The simplest way to install the library is to run: - -``` -$ go get google.golang.org/grpc -``` - -Prerequisites -------------- - -This requires Go 1.5 or later . - -Constraints ------------ -The grpc package should only depend on standard Go packages and a small number of exceptions. If your contribution introduces new dependencies which are NOT in the [list](http://godoc.org/google.golang.org/grpc?imports), you need a discussion with gRPC-Go authors and consultants. - -Documentation -------------- -See [API documentation](https://godoc.org/google.golang.org/grpc) for package and API descriptions and find examples in the [examples directory](examples/). - -Status ------- -GA - diff --git a/vendor/google.golang.org/grpc/backoff.go b/vendor/google.golang.org/grpc/backoff.go deleted file mode 100644 index 52f4f10fc2..0000000000 --- a/vendor/google.golang.org/grpc/backoff.go +++ /dev/null @@ -1,80 +0,0 @@ -package grpc - -import ( - "math/rand" - "time" -) - -// DefaultBackoffConfig uses values specified for backoff in -// https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md. -var ( - DefaultBackoffConfig = BackoffConfig{ - MaxDelay: 120 * time.Second, - baseDelay: 1.0 * time.Second, - factor: 1.6, - jitter: 0.2, - } -) - -// backoffStrategy defines the methodology for backing off after a grpc -// connection failure. -// -// This is unexported until the gRPC project decides whether or not to allow -// alternative backoff strategies. Once a decision is made, this type and its -// method may be exported. -type backoffStrategy interface { - // backoff returns the amount of time to wait before the next retry given - // the number of consecutive failures. - backoff(retries int) time.Duration -} - -// BackoffConfig defines the parameters for the default gRPC backoff strategy. -type BackoffConfig struct { - // MaxDelay is the upper bound of backoff delay. - MaxDelay time.Duration - - // TODO(stevvooe): The following fields are not exported, as allowing - // changes would violate the current gRPC specification for backoff. If - // gRPC decides to allow more interesting backoff strategies, these fields - // may be opened up in the future. - - // baseDelay is the amount of time to wait before retrying after the first - // failure. - baseDelay time.Duration - - // factor is applied to the backoff after each retry. - factor float64 - - // jitter provides a range to randomize backoff delays. - jitter float64 -} - -func setDefaults(bc *BackoffConfig) { - md := bc.MaxDelay - *bc = DefaultBackoffConfig - - if md > 0 { - bc.MaxDelay = md - } -} - -func (bc BackoffConfig) backoff(retries int) (t time.Duration) { - if retries == 0 { - return bc.baseDelay - } - backoff, max := float64(bc.baseDelay), float64(bc.MaxDelay) - for backoff < max && retries > 0 { - backoff *= bc.factor - retries-- - } - if backoff > max { - backoff = max - } - // Randomize backoff delays so that if a cluster of requests start at - // the same time, they won't operate in lockstep. - backoff *= 1 + bc.jitter*(rand.Float64()*2-1) - if backoff < 0 { - return 0 - } - return time.Duration(backoff) -} diff --git a/vendor/google.golang.org/grpc/balancer.go b/vendor/google.golang.org/grpc/balancer.go deleted file mode 100644 index 419e214611..0000000000 --- a/vendor/google.golang.org/grpc/balancer.go +++ /dev/null @@ -1,385 +0,0 @@ -/* - * - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "fmt" - "sync" - - "golang.org/x/net/context" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/naming" -) - -// Address represents a server the client connects to. -// This is the EXPERIMENTAL API and may be changed or extended in the future. -type Address struct { - // Addr is the server address on which a connection will be established. - Addr string - // Metadata is the information associated with Addr, which may be used - // to make load balancing decision. - Metadata interface{} -} - -// BalancerGetOptions configures a Get call. -// This is the EXPERIMENTAL API and may be changed or extended in the future. -type BalancerGetOptions struct { - // BlockingWait specifies whether Get should block when there is no - // connected address. - BlockingWait bool -} - -// Balancer chooses network addresses for RPCs. -// This is the EXPERIMENTAL API and may be changed or extended in the future. -type Balancer interface { - // Start does the initialization work to bootstrap a Balancer. For example, - // this function may start the name resolution and watch the updates. It will - // be called when dialing. - Start(target string) error - // Up informs the Balancer that gRPC has a connection to the server at - // addr. It returns down which is called once the connection to addr gets - // lost or closed. - // TODO: It is not clear how to construct and take advantage the meaningful error - // parameter for down. Need realistic demands to guide. - Up(addr Address) (down func(error)) - // Get gets the address of a server for the RPC corresponding to ctx. - // i) If it returns a connected address, gRPC internals issues the RPC on the - // connection to this address; - // ii) If it returns an address on which the connection is under construction - // (initiated by Notify(...)) but not connected, gRPC internals - // * fails RPC if the RPC is fail-fast and connection is in the TransientFailure or - // Shutdown state; - // or - // * issues RPC on the connection otherwise. - // iii) If it returns an address on which the connection does not exist, gRPC - // internals treats it as an error and will fail the corresponding RPC. - // - // Therefore, the following is the recommended rule when writing a custom Balancer. - // If opts.BlockingWait is true, it should return a connected address or - // block if there is no connected address. It should respect the timeout or - // cancellation of ctx when blocking. If opts.BlockingWait is false (for fail-fast - // RPCs), it should return an address it has notified via Notify(...) immediately - // instead of blocking. - // - // The function returns put which is called once the rpc has completed or failed. - // put can collect and report RPC stats to a remote load balancer. - // - // This function should only return the errors Balancer cannot recover by itself. - // gRPC internals will fail the RPC if an error is returned. - Get(ctx context.Context, opts BalancerGetOptions) (addr Address, put func(), err error) - // Notify returns a channel that is used by gRPC internals to watch the addresses - // gRPC needs to connect. The addresses might be from a name resolver or remote - // load balancer. gRPC internals will compare it with the existing connected - // addresses. If the address Balancer notified is not in the existing connected - // addresses, gRPC starts to connect the address. If an address in the existing - // connected addresses is not in the notification list, the corresponding connection - // is shutdown gracefully. Otherwise, there are no operations to take. Note that - // the Address slice must be the full list of the Addresses which should be connected. - // It is NOT delta. - Notify() <-chan []Address - // Close shuts down the balancer. - Close() error -} - -// downErr implements net.Error. It is constructed by gRPC internals and passed to the down -// call of Balancer. -type downErr struct { - timeout bool - temporary bool - desc string -} - -func (e downErr) Error() string { return e.desc } -func (e downErr) Timeout() bool { return e.timeout } -func (e downErr) Temporary() bool { return e.temporary } - -func downErrorf(timeout, temporary bool, format string, a ...interface{}) downErr { - return downErr{ - timeout: timeout, - temporary: temporary, - desc: fmt.Sprintf(format, a...), - } -} - -// RoundRobin returns a Balancer that selects addresses round-robin. It uses r to watch -// the name resolution updates and updates the addresses available correspondingly. -func RoundRobin(r naming.Resolver) Balancer { - return &roundRobin{r: r} -} - -type addrInfo struct { - addr Address - connected bool -} - -type roundRobin struct { - r naming.Resolver - w naming.Watcher - addrs []*addrInfo // all the addresses the client should potentially connect - mu sync.Mutex - addrCh chan []Address // the channel to notify gRPC internals the list of addresses the client should connect to. - next int // index of the next address to return for Get() - waitCh chan struct{} // the channel to block when there is no connected address available - done bool // The Balancer is closed. -} - -func (rr *roundRobin) watchAddrUpdates() error { - updates, err := rr.w.Next() - if err != nil { - grpclog.Printf("grpc: the naming watcher stops working due to %v.\n", err) - return err - } - rr.mu.Lock() - defer rr.mu.Unlock() - for _, update := range updates { - addr := Address{ - Addr: update.Addr, - Metadata: update.Metadata, - } - switch update.Op { - case naming.Add: - var exist bool - for _, v := range rr.addrs { - if addr == v.addr { - exist = true - grpclog.Println("grpc: The name resolver wanted to add an existing address: ", addr) - break - } - } - if exist { - continue - } - rr.addrs = append(rr.addrs, &addrInfo{addr: addr}) - case naming.Delete: - for i, v := range rr.addrs { - if addr == v.addr { - copy(rr.addrs[i:], rr.addrs[i+1:]) - rr.addrs = rr.addrs[:len(rr.addrs)-1] - break - } - } - default: - grpclog.Println("Unknown update.Op ", update.Op) - } - } - // Make a copy of rr.addrs and write it onto rr.addrCh so that gRPC internals gets notified. - open := make([]Address, len(rr.addrs)) - for i, v := range rr.addrs { - open[i] = v.addr - } - if rr.done { - return ErrClientConnClosing - } - rr.addrCh <- open - return nil -} - -func (rr *roundRobin) Start(target string) error { - if rr.r == nil { - // If there is no name resolver installed, it is not needed to - // do name resolution. In this case, target is added into rr.addrs - // as the only address available and rr.addrCh stays nil. - rr.addrs = append(rr.addrs, &addrInfo{addr: Address{Addr: target}}) - return nil - } - w, err := rr.r.Resolve(target) - if err != nil { - return err - } - rr.w = w - rr.addrCh = make(chan []Address) - go func() { - for { - if err := rr.watchAddrUpdates(); err != nil { - return - } - } - }() - return nil -} - -// Up sets the connected state of addr and sends notification if there are pending -// Get() calls. -func (rr *roundRobin) Up(addr Address) func(error) { - rr.mu.Lock() - defer rr.mu.Unlock() - var cnt int - for _, a := range rr.addrs { - if a.addr == addr { - if a.connected { - return nil - } - a.connected = true - } - if a.connected { - cnt++ - } - } - // addr is only one which is connected. Notify the Get() callers who are blocking. - if cnt == 1 && rr.waitCh != nil { - close(rr.waitCh) - rr.waitCh = nil - } - return func(err error) { - rr.down(addr, err) - } -} - -// down unsets the connected state of addr. -func (rr *roundRobin) down(addr Address, err error) { - rr.mu.Lock() - defer rr.mu.Unlock() - for _, a := range rr.addrs { - if addr == a.addr { - a.connected = false - break - } - } -} - -// Get returns the next addr in the rotation. -func (rr *roundRobin) Get(ctx context.Context, opts BalancerGetOptions) (addr Address, put func(), err error) { - var ch chan struct{} - rr.mu.Lock() - if rr.done { - rr.mu.Unlock() - err = ErrClientConnClosing - return - } - - if len(rr.addrs) > 0 { - if rr.next >= len(rr.addrs) { - rr.next = 0 - } - next := rr.next - for { - a := rr.addrs[next] - next = (next + 1) % len(rr.addrs) - if a.connected { - addr = a.addr - rr.next = next - rr.mu.Unlock() - return - } - if next == rr.next { - // Has iterated all the possible address but none is connected. - break - } - } - } - if !opts.BlockingWait { - if len(rr.addrs) == 0 { - rr.mu.Unlock() - err = fmt.Errorf("there is no address available") - return - } - // Returns the next addr on rr.addrs for failfast RPCs. - addr = rr.addrs[rr.next].addr - rr.next++ - rr.mu.Unlock() - return - } - // Wait on rr.waitCh for non-failfast RPCs. - if rr.waitCh == nil { - ch = make(chan struct{}) - rr.waitCh = ch - } else { - ch = rr.waitCh - } - rr.mu.Unlock() - for { - select { - case <-ctx.Done(): - err = ctx.Err() - return - case <-ch: - rr.mu.Lock() - if rr.done { - rr.mu.Unlock() - err = ErrClientConnClosing - return - } - - if len(rr.addrs) > 0 { - if rr.next >= len(rr.addrs) { - rr.next = 0 - } - next := rr.next - for { - a := rr.addrs[next] - next = (next + 1) % len(rr.addrs) - if a.connected { - addr = a.addr - rr.next = next - rr.mu.Unlock() - return - } - if next == rr.next { - // Has iterated all the possible address but none is connected. - break - } - } - } - // The newly added addr got removed by Down() again. - if rr.waitCh == nil { - ch = make(chan struct{}) - rr.waitCh = ch - } else { - ch = rr.waitCh - } - rr.mu.Unlock() - } - } -} - -func (rr *roundRobin) Notify() <-chan []Address { - return rr.addrCh -} - -func (rr *roundRobin) Close() error { - rr.mu.Lock() - defer rr.mu.Unlock() - rr.done = true - if rr.w != nil { - rr.w.Close() - } - if rr.waitCh != nil { - close(rr.waitCh) - rr.waitCh = nil - } - if rr.addrCh != nil { - close(rr.addrCh) - } - return nil -} diff --git a/vendor/google.golang.org/grpc/call.go b/vendor/google.golang.org/grpc/call.go deleted file mode 100644 index fea07998d7..0000000000 --- a/vendor/google.golang.org/grpc/call.go +++ /dev/null @@ -1,226 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "bytes" - "io" - "math" - "time" - - "golang.org/x/net/context" - "golang.org/x/net/trace" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/transport" -) - -// recvResponse receives and parses an RPC response. -// On error, it returns the error and indicates whether the call should be retried. -// -// TODO(zhaoq): Check whether the received message sequence is valid. -func recvResponse(dopts dialOptions, t transport.ClientTransport, c *callInfo, stream *transport.Stream, reply interface{}) error { - // Try to acquire header metadata from the server if there is any. - var err error - defer func() { - if err != nil { - if _, ok := err.(transport.ConnectionError); !ok { - t.CloseStream(stream, err) - } - } - }() - c.headerMD, err = stream.Header() - if err != nil { - return err - } - p := &parser{r: stream} - for { - if err = recv(p, dopts.codec, stream, dopts.dc, reply, math.MaxInt32); err != nil { - if err == io.EOF { - break - } - return err - } - } - c.trailerMD = stream.Trailer() - return nil -} - -// sendRequest writes out various information of an RPC such as Context and Message. -func sendRequest(ctx context.Context, codec Codec, compressor Compressor, callHdr *transport.CallHdr, t transport.ClientTransport, args interface{}, opts *transport.Options) (_ *transport.Stream, err error) { - stream, err := t.NewStream(ctx, callHdr) - if err != nil { - return nil, err - } - defer func() { - if err != nil { - // If err is connection error, t will be closed, no need to close stream here. - if _, ok := err.(transport.ConnectionError); !ok { - t.CloseStream(stream, err) - } - } - }() - var cbuf *bytes.Buffer - if compressor != nil { - cbuf = new(bytes.Buffer) - } - outBuf, err := encode(codec, args, compressor, cbuf) - if err != nil { - return nil, transport.StreamErrorf(codes.Internal, "grpc: %v", err) - } - err = t.Write(stream, outBuf, opts) - // t.NewStream(...) could lead to an early rejection of the RPC (e.g., the service/method - // does not exist.) so that t.Write could get io.EOF from wait(...). Leave the following - // recvResponse to get the final status. - if err != nil && err != io.EOF { - return nil, err - } - // Sent successfully. - return stream, nil -} - -// Invoke sends the RPC request on the wire and returns after response is received. -// Invoke is called by generated code. Also users can call Invoke directly when it -// is really needed in their use cases. -func Invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) (err error) { - c := defaultCallInfo - for _, o := range opts { - if err := o.before(&c); err != nil { - return toRPCErr(err) - } - } - defer func() { - for _, o := range opts { - o.after(&c) - } - }() - if EnableTracing { - c.traceInfo.tr = trace.New("grpc.Sent."+methodFamily(method), method) - defer c.traceInfo.tr.Finish() - c.traceInfo.firstLine.client = true - if deadline, ok := ctx.Deadline(); ok { - c.traceInfo.firstLine.deadline = deadline.Sub(time.Now()) - } - c.traceInfo.tr.LazyLog(&c.traceInfo.firstLine, false) - // TODO(dsymonds): Arrange for c.traceInfo.firstLine.remoteAddr to be set. - defer func() { - if err != nil { - c.traceInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - c.traceInfo.tr.SetError() - } - }() - } - topts := &transport.Options{ - Last: true, - Delay: false, - } - for { - var ( - err error - t transport.ClientTransport - stream *transport.Stream - // Record the put handler from Balancer.Get(...). It is called once the - // RPC has completed or failed. - put func() - ) - // TODO(zhaoq): Need a formal spec of fail-fast. - callHdr := &transport.CallHdr{ - Host: cc.authority, - Method: method, - } - if cc.dopts.cp != nil { - callHdr.SendCompress = cc.dopts.cp.Type() - } - gopts := BalancerGetOptions{ - BlockingWait: !c.failFast, - } - t, put, err = cc.getTransport(ctx, gopts) - if err != nil { - // TODO(zhaoq): Probably revisit the error handling. - if _, ok := err.(*rpcError); ok { - return err - } - if err == errConnClosing || err == errConnUnavailable { - if c.failFast { - return Errorf(codes.Unavailable, "%v", err) - } - continue - } - // All the other errors are treated as Internal errors. - return Errorf(codes.Internal, "%v", err) - } - if c.traceInfo.tr != nil { - c.traceInfo.tr.LazyLog(&payload{sent: true, msg: args}, true) - } - stream, err = sendRequest(ctx, cc.dopts.codec, cc.dopts.cp, callHdr, t, args, topts) - if err != nil { - if put != nil { - put() - put = nil - } - // Retry a non-failfast RPC when - // i) there is a connection error; or - // ii) the server started to drain before this RPC was initiated. - if _, ok := err.(transport.ConnectionError); ok || err == transport.ErrStreamDrain { - if c.failFast { - return toRPCErr(err) - } - continue - } - return toRPCErr(err) - } - err = recvResponse(cc.dopts, t, &c, stream, reply) - if err != nil { - if put != nil { - put() - put = nil - } - if _, ok := err.(transport.ConnectionError); ok || err == transport.ErrStreamDrain { - if c.failFast { - return toRPCErr(err) - } - continue - } - return toRPCErr(err) - } - if c.traceInfo.tr != nil { - c.traceInfo.tr.LazyLog(&payload{sent: false, msg: reply}, true) - } - t.CloseStream(stream, nil) - if put != nil { - put() - put = nil - } - return Errorf(stream.StatusCode(), "%s", stream.StatusDesc()) - } -} diff --git a/vendor/google.golang.org/grpc/clientconn.go b/vendor/google.golang.org/grpc/clientconn.go deleted file mode 100644 index 1d3b46c605..0000000000 --- a/vendor/google.golang.org/grpc/clientconn.go +++ /dev/null @@ -1,857 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "errors" - "fmt" - "net" - "strings" - "sync" - "time" - - "golang.org/x/net/context" - "golang.org/x/net/trace" - "google.golang.org/grpc/credentials" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/transport" -) - -var ( - // ErrClientConnClosing indicates that the operation is illegal because - // the ClientConn is closing. - ErrClientConnClosing = errors.New("grpc: the client connection is closing") - // ErrClientConnTimeout indicates that the ClientConn cannot establish the - // underlying connections within the specified timeout. - ErrClientConnTimeout = errors.New("grpc: timed out when dialing") - - // errNoTransportSecurity indicates that there is no transport security - // being set for ClientConn. Users should either set one or explicitly - // call WithInsecure DialOption to disable security. - errNoTransportSecurity = errors.New("grpc: no transport security set (use grpc.WithInsecure() explicitly or set credentials)") - // errTransportCredentialsMissing indicates that users want to transmit security - // information (e.g., oauth2 token) which requires secure connection on an insecure - // connection. - errTransportCredentialsMissing = errors.New("grpc: the credentials require transport level security (use grpc.WithTransportCredentials() to set)") - // errCredentialsConflict indicates that grpc.WithTransportCredentials() - // and grpc.WithInsecure() are both called for a connection. - errCredentialsConflict = errors.New("grpc: transport credentials are set for an insecure connection (grpc.WithTransportCredentials() and grpc.WithInsecure() are both called)") - // errNetworkIO indicates that the connection is down due to some network I/O error. - errNetworkIO = errors.New("grpc: failed with network I/O error") - // errConnDrain indicates that the connection starts to be drained and does not accept any new RPCs. - errConnDrain = errors.New("grpc: the connection is drained") - // errConnClosing indicates that the connection is closing. - errConnClosing = errors.New("grpc: the connection is closing") - // errConnUnavailable indicates that the connection is unavailable. - errConnUnavailable = errors.New("grpc: the connection is unavailable") - errNoAddr = errors.New("grpc: there is no address available to dial") - // minimum time to give a connection to complete - minConnectTimeout = 20 * time.Second -) - -// dialOptions configure a Dial call. dialOptions are set by the DialOption -// values passed to Dial. -type dialOptions struct { - codec Codec - cp Compressor - dc Decompressor - bs backoffStrategy - balancer Balancer - block bool - insecure bool - timeout time.Duration - copts transport.ConnectOptions -} - -// DialOption configures how we set up the connection. -type DialOption func(*dialOptions) - -// WithCodec returns a DialOption which sets a codec for message marshaling and unmarshaling. -func WithCodec(c Codec) DialOption { - return func(o *dialOptions) { - o.codec = c - } -} - -// WithCompressor returns a DialOption which sets a CompressorGenerator for generating message -// compressor. -func WithCompressor(cp Compressor) DialOption { - return func(o *dialOptions) { - o.cp = cp - } -} - -// WithDecompressor returns a DialOption which sets a DecompressorGenerator for generating -// message decompressor. -func WithDecompressor(dc Decompressor) DialOption { - return func(o *dialOptions) { - o.dc = dc - } -} - -// WithBalancer returns a DialOption which sets a load balancer. -func WithBalancer(b Balancer) DialOption { - return func(o *dialOptions) { - o.balancer = b - } -} - -// WithBackoffMaxDelay configures the dialer to use the provided maximum delay -// when backing off after failed connection attempts. -func WithBackoffMaxDelay(md time.Duration) DialOption { - return WithBackoffConfig(BackoffConfig{MaxDelay: md}) -} - -// WithBackoffConfig configures the dialer to use the provided backoff -// parameters after connection failures. -// -// Use WithBackoffMaxDelay until more parameters on BackoffConfig are opened up -// for use. -func WithBackoffConfig(b BackoffConfig) DialOption { - // Set defaults to ensure that provided BackoffConfig is valid and - // unexported fields get default values. - setDefaults(&b) - return withBackoff(b) -} - -// withBackoff sets the backoff strategy used for retries after a -// failed connection attempt. -// -// This can be exported if arbitrary backoff strategies are allowed by gRPC. -func withBackoff(bs backoffStrategy) DialOption { - return func(o *dialOptions) { - o.bs = bs - } -} - -// WithBlock returns a DialOption which makes caller of Dial blocks until the underlying -// connection is up. Without this, Dial returns immediately and connecting the server -// happens in background. -func WithBlock() DialOption { - return func(o *dialOptions) { - o.block = true - } -} - -// WithInsecure returns a DialOption which disables transport security for this ClientConn. -// Note that transport security is required unless WithInsecure is set. -func WithInsecure() DialOption { - return func(o *dialOptions) { - o.insecure = true - } -} - -// WithTransportCredentials returns a DialOption which configures a -// connection level security credentials (e.g., TLS/SSL). -func WithTransportCredentials(creds credentials.TransportCredentials) DialOption { - return func(o *dialOptions) { - o.copts.TransportCredentials = creds - } -} - -// WithPerRPCCredentials returns a DialOption which sets -// credentials which will place auth state on each outbound RPC. -func WithPerRPCCredentials(creds credentials.PerRPCCredentials) DialOption { - return func(o *dialOptions) { - o.copts.PerRPCCredentials = append(o.copts.PerRPCCredentials, creds) - } -} - -// WithTimeout returns a DialOption that configures a timeout for dialing a ClientConn -// initially. This is valid if and only if WithBlock() is present. -func WithTimeout(d time.Duration) DialOption { - return func(o *dialOptions) { - o.timeout = d - } -} - -// WithDialer returns a DialOption that specifies a function to use for dialing network addresses. -func WithDialer(f func(string, time.Duration) (net.Conn, error)) DialOption { - return func(o *dialOptions) { - o.copts.Dialer = func(ctx context.Context, addr string) (net.Conn, error) { - if deadline, ok := ctx.Deadline(); ok { - return f(addr, deadline.Sub(time.Now())) - } - return f(addr, 0) - } - } -} - -// WithUserAgent returns a DialOption that specifies a user agent string for all the RPCs. -func WithUserAgent(s string) DialOption { - return func(o *dialOptions) { - o.copts.UserAgent = s - } -} - -// Dial creates a client connection to the given target. -func Dial(target string, opts ...DialOption) (*ClientConn, error) { - return DialContext(context.Background(), target, opts...) -} - -// DialContext creates a client connection to the given target. ctx can be used to -// cancel or expire the pending connecting. Once this function returns, the -// cancellation and expiration of ctx will be noop. Users should call ClientConn.Close -// to terminate all the pending operations after this function returns. -// This is the EXPERIMENTAL API. -func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *ClientConn, err error) { - cc := &ClientConn{ - target: target, - conns: make(map[Address]*addrConn), - } - cc.ctx, cc.cancel = context.WithCancel(context.Background()) - defer func() { - select { - case <-ctx.Done(): - conn, err = nil, ctx.Err() - default: - } - - if err != nil { - cc.Close() - } - }() - - for _, opt := range opts { - opt(&cc.dopts) - } - - // Set defaults. - if cc.dopts.codec == nil { - cc.dopts.codec = protoCodec{} - } - if cc.dopts.bs == nil { - cc.dopts.bs = DefaultBackoffConfig - } - - var ( - ok bool - addrs []Address - ) - if cc.dopts.balancer == nil { - // Connect to target directly if balancer is nil. - addrs = append(addrs, Address{Addr: target}) - } else { - if err := cc.dopts.balancer.Start(target); err != nil { - return nil, err - } - ch := cc.dopts.balancer.Notify() - if ch == nil { - // There is no name resolver installed. - addrs = append(addrs, Address{Addr: target}) - } else { - addrs, ok = <-ch - if !ok || len(addrs) == 0 { - return nil, errNoAddr - } - } - } - waitC := make(chan error, 1) - go func() { - for _, a := range addrs { - if err := cc.resetAddrConn(a, false, nil); err != nil { - waitC <- err - return - } - } - close(waitC) - }() - var timeoutCh <-chan time.Time - if cc.dopts.timeout > 0 { - timeoutCh = time.After(cc.dopts.timeout) - } - select { - case <-ctx.Done(): - return nil, ctx.Err() - case err := <-waitC: - if err != nil { - return nil, err - } - case <-timeoutCh: - return nil, ErrClientConnTimeout - } - // If balancer is nil or balancer.Notify() is nil, ok will be false here. - // The lbWatcher goroutine will not be created. - if ok { - go cc.lbWatcher() - } - colonPos := strings.LastIndex(target, ":") - if colonPos == -1 { - colonPos = len(target) - } - cc.authority = target[:colonPos] - return cc, nil -} - -// ConnectivityState indicates the state of a client connection. -type ConnectivityState int - -const ( - // Idle indicates the ClientConn is idle. - Idle ConnectivityState = iota - // Connecting indicates the ClienConn is connecting. - Connecting - // Ready indicates the ClientConn is ready for work. - Ready - // TransientFailure indicates the ClientConn has seen a failure but expects to recover. - TransientFailure - // Shutdown indicates the ClientConn has started shutting down. - Shutdown -) - -func (s ConnectivityState) String() string { - switch s { - case Idle: - return "IDLE" - case Connecting: - return "CONNECTING" - case Ready: - return "READY" - case TransientFailure: - return "TRANSIENT_FAILURE" - case Shutdown: - return "SHUTDOWN" - default: - panic(fmt.Sprintf("unknown connectivity state: %d", s)) - } -} - -// ClientConn represents a client connection to an RPC server. -type ClientConn struct { - ctx context.Context - cancel context.CancelFunc - - target string - authority string - dopts dialOptions - - mu sync.RWMutex - conns map[Address]*addrConn -} - -func (cc *ClientConn) lbWatcher() { - for addrs := range cc.dopts.balancer.Notify() { - var ( - add []Address // Addresses need to setup connections. - del []*addrConn // Connections need to tear down. - ) - cc.mu.Lock() - for _, a := range addrs { - if _, ok := cc.conns[a]; !ok { - add = append(add, a) - } - } - for k, c := range cc.conns { - var keep bool - for _, a := range addrs { - if k == a { - keep = true - break - } - } - if !keep { - del = append(del, c) - delete(cc.conns, c.addr) - } - } - cc.mu.Unlock() - for _, a := range add { - cc.resetAddrConn(a, true, nil) - } - for _, c := range del { - c.tearDown(errConnDrain) - } - } -} - -// resetAddrConn creates an addrConn for addr and adds it to cc.conns. -// If there is an old addrConn for addr, it will be torn down, using tearDownErr as the reason. -// If tearDownErr is nil, errConnDrain will be used instead. -func (cc *ClientConn) resetAddrConn(addr Address, skipWait bool, tearDownErr error) error { - ac := &addrConn{ - cc: cc, - addr: addr, - dopts: cc.dopts, - } - ac.ctx, ac.cancel = context.WithCancel(cc.ctx) - ac.stateCV = sync.NewCond(&ac.mu) - if EnableTracing { - ac.events = trace.NewEventLog("grpc.ClientConn", ac.addr.Addr) - } - if !ac.dopts.insecure { - if ac.dopts.copts.TransportCredentials == nil { - return errNoTransportSecurity - } - } else { - if ac.dopts.copts.TransportCredentials != nil { - return errCredentialsConflict - } - for _, cd := range ac.dopts.copts.PerRPCCredentials { - if cd.RequireTransportSecurity() { - return errTransportCredentialsMissing - } - } - } - // Track ac in cc. This needs to be done before any getTransport(...) is called. - cc.mu.Lock() - if cc.conns == nil { - cc.mu.Unlock() - return ErrClientConnClosing - } - stale := cc.conns[ac.addr] - cc.conns[ac.addr] = ac - cc.mu.Unlock() - if stale != nil { - // There is an addrConn alive on ac.addr already. This could be due to - // 1) a buggy Balancer notifies duplicated Addresses; - // 2) goaway was received, a new ac will replace the old ac. - // The old ac should be deleted from cc.conns, but the - // underlying transport should drain rather than close. - if tearDownErr == nil { - // tearDownErr is nil if resetAddrConn is called by - // 1) Dial - // 2) lbWatcher - // In both cases, the stale ac should drain, not close. - stale.tearDown(errConnDrain) - } else { - stale.tearDown(tearDownErr) - } - } - // skipWait may overwrite the decision in ac.dopts.block. - if ac.dopts.block && !skipWait { - if err := ac.resetTransport(false); err != nil { - if err != errConnClosing { - // Tear down ac and delete it from cc.conns. - cc.mu.Lock() - delete(cc.conns, ac.addr) - cc.mu.Unlock() - ac.tearDown(err) - } - if e, ok := err.(transport.ConnectionError); ok && !e.Temporary() { - return e.Origin() - } - return err - } - // Start to monitor the error status of transport. - go ac.transportMonitor() - } else { - // Start a goroutine connecting to the server asynchronously. - go func() { - if err := ac.resetTransport(false); err != nil { - grpclog.Printf("Failed to dial %s: %v; please retry.", ac.addr.Addr, err) - if err != errConnClosing { - // Keep this ac in cc.conns, to get the reason it's torn down. - ac.tearDown(err) - } - return - } - ac.transportMonitor() - }() - } - return nil -} - -func (cc *ClientConn) getTransport(ctx context.Context, opts BalancerGetOptions) (transport.ClientTransport, func(), error) { - var ( - ac *addrConn - ok bool - put func() - ) - if cc.dopts.balancer == nil { - // If balancer is nil, there should be only one addrConn available. - cc.mu.RLock() - if cc.conns == nil { - cc.mu.RUnlock() - return nil, nil, toRPCErr(ErrClientConnClosing) - } - for _, ac = range cc.conns { - // Break after the first iteration to get the first addrConn. - ok = true - break - } - cc.mu.RUnlock() - } else { - var ( - addr Address - err error - ) - addr, put, err = cc.dopts.balancer.Get(ctx, opts) - if err != nil { - return nil, nil, toRPCErr(err) - } - cc.mu.RLock() - if cc.conns == nil { - cc.mu.RUnlock() - return nil, nil, toRPCErr(ErrClientConnClosing) - } - ac, ok = cc.conns[addr] - cc.mu.RUnlock() - } - if !ok { - if put != nil { - put() - } - return nil, nil, errConnClosing - } - t, err := ac.wait(ctx, cc.dopts.balancer != nil, !opts.BlockingWait) - if err != nil { - if put != nil { - put() - } - return nil, nil, err - } - return t, put, nil -} - -// Close tears down the ClientConn and all underlying connections. -func (cc *ClientConn) Close() error { - cc.cancel() - - cc.mu.Lock() - if cc.conns == nil { - cc.mu.Unlock() - return ErrClientConnClosing - } - conns := cc.conns - cc.conns = nil - cc.mu.Unlock() - if cc.dopts.balancer != nil { - cc.dopts.balancer.Close() - } - for _, ac := range conns { - ac.tearDown(ErrClientConnClosing) - } - return nil -} - -// addrConn is a network connection to a given address. -type addrConn struct { - ctx context.Context - cancel context.CancelFunc - - cc *ClientConn - addr Address - dopts dialOptions - events trace.EventLog - - mu sync.Mutex - state ConnectivityState - stateCV *sync.Cond - down func(error) // the handler called when a connection is down. - // ready is closed and becomes nil when a new transport is up or failed - // due to timeout. - ready chan struct{} - transport transport.ClientTransport - - // The reason this addrConn is torn down. - tearDownErr error -} - -// printf records an event in ac's event log, unless ac has been closed. -// REQUIRES ac.mu is held. -func (ac *addrConn) printf(format string, a ...interface{}) { - if ac.events != nil { - ac.events.Printf(format, a...) - } -} - -// errorf records an error in ac's event log, unless ac has been closed. -// REQUIRES ac.mu is held. -func (ac *addrConn) errorf(format string, a ...interface{}) { - if ac.events != nil { - ac.events.Errorf(format, a...) - } -} - -// getState returns the connectivity state of the Conn -func (ac *addrConn) getState() ConnectivityState { - ac.mu.Lock() - defer ac.mu.Unlock() - return ac.state -} - -// waitForStateChange blocks until the state changes to something other than the sourceState. -func (ac *addrConn) waitForStateChange(ctx context.Context, sourceState ConnectivityState) (ConnectivityState, error) { - ac.mu.Lock() - defer ac.mu.Unlock() - if sourceState != ac.state { - return ac.state, nil - } - done := make(chan struct{}) - var err error - go func() { - select { - case <-ctx.Done(): - ac.mu.Lock() - err = ctx.Err() - ac.stateCV.Broadcast() - ac.mu.Unlock() - case <-done: - } - }() - defer close(done) - for sourceState == ac.state { - ac.stateCV.Wait() - if err != nil { - return ac.state, err - } - } - return ac.state, nil -} - -func (ac *addrConn) resetTransport(closeTransport bool) error { - for retries := 0; ; retries++ { - ac.mu.Lock() - ac.printf("connecting") - if ac.state == Shutdown { - // ac.tearDown(...) has been invoked. - ac.mu.Unlock() - return errConnClosing - } - if ac.down != nil { - ac.down(downErrorf(false, true, "%v", errNetworkIO)) - ac.down = nil - } - ac.state = Connecting - ac.stateCV.Broadcast() - t := ac.transport - ac.mu.Unlock() - if closeTransport && t != nil { - t.Close() - } - sleepTime := ac.dopts.bs.backoff(retries) - timeout := minConnectTimeout - if timeout < sleepTime { - timeout = sleepTime - } - ctx, cancel := context.WithTimeout(ac.ctx, timeout) - connectTime := time.Now() - newTransport, err := transport.NewClientTransport(ctx, ac.addr.Addr, ac.dopts.copts) - if err != nil { - cancel() - - if e, ok := err.(transport.ConnectionError); ok && !e.Temporary() { - return err - } - grpclog.Printf("grpc: addrConn.resetTransport failed to create client transport: %v; Reconnecting to %q", err, ac.addr) - ac.mu.Lock() - if ac.state == Shutdown { - // ac.tearDown(...) has been invoked. - ac.mu.Unlock() - return errConnClosing - } - ac.errorf("transient failure: %v", err) - ac.state = TransientFailure - ac.stateCV.Broadcast() - if ac.ready != nil { - close(ac.ready) - ac.ready = nil - } - ac.mu.Unlock() - closeTransport = false - select { - case <-time.After(sleepTime - time.Since(connectTime)): - case <-ac.ctx.Done(): - return ac.ctx.Err() - } - continue - } - ac.mu.Lock() - ac.printf("ready") - if ac.state == Shutdown { - // ac.tearDown(...) has been invoked. - ac.mu.Unlock() - newTransport.Close() - return errConnClosing - } - ac.state = Ready - ac.stateCV.Broadcast() - ac.transport = newTransport - if ac.ready != nil { - close(ac.ready) - ac.ready = nil - } - if ac.cc.dopts.balancer != nil { - ac.down = ac.cc.dopts.balancer.Up(ac.addr) - } - ac.mu.Unlock() - return nil - } -} - -// Run in a goroutine to track the error in transport and create the -// new transport if an error happens. It returns when the channel is closing. -func (ac *addrConn) transportMonitor() { - for { - ac.mu.Lock() - t := ac.transport - ac.mu.Unlock() - select { - // This is needed to detect the teardown when - // the addrConn is idle (i.e., no RPC in flight). - case <-ac.ctx.Done(): - select { - case <-t.Error(): - t.Close() - default: - } - return - case <-t.GoAway(): - // If GoAway happens without any network I/O error, ac is closed without shutting down the - // underlying transport (the transport will be closed when all the pending RPCs finished or - // failed.). - // If GoAway and some network I/O error happen concurrently, ac and its underlying transport - // are closed. - // In both cases, a new ac is created. - select { - case <-t.Error(): - ac.cc.resetAddrConn(ac.addr, true, errNetworkIO) - default: - ac.cc.resetAddrConn(ac.addr, true, errConnDrain) - } - return - case <-t.Error(): - select { - case <-ac.ctx.Done(): - t.Close() - return - case <-t.GoAway(): - ac.cc.resetAddrConn(ac.addr, true, errNetworkIO) - return - default: - } - ac.mu.Lock() - if ac.state == Shutdown { - // ac has been shutdown. - ac.mu.Unlock() - return - } - ac.state = TransientFailure - ac.stateCV.Broadcast() - ac.mu.Unlock() - if err := ac.resetTransport(true); err != nil { - ac.mu.Lock() - ac.printf("transport exiting: %v", err) - ac.mu.Unlock() - grpclog.Printf("grpc: addrConn.transportMonitor exits due to: %v", err) - if err != errConnClosing { - // Keep this ac in cc.conns, to get the reason it's torn down. - ac.tearDown(err) - } - return - } - } - } -} - -// wait blocks until i) the new transport is up or ii) ctx is done or iii) ac is closed or -// iv) transport is in TransientFailure and there's no balancer/failfast is true. -func (ac *addrConn) wait(ctx context.Context, hasBalancer, failfast bool) (transport.ClientTransport, error) { - for { - ac.mu.Lock() - switch { - case ac.state == Shutdown: - if failfast || !hasBalancer { - // RPC is failfast or balancer is nil. This RPC should fail with ac.tearDownErr. - err := ac.tearDownErr - ac.mu.Unlock() - return nil, err - } - ac.mu.Unlock() - return nil, errConnClosing - case ac.state == Ready: - ct := ac.transport - ac.mu.Unlock() - return ct, nil - case ac.state == TransientFailure: - if failfast || hasBalancer { - ac.mu.Unlock() - return nil, errConnUnavailable - } - } - ready := ac.ready - if ready == nil { - ready = make(chan struct{}) - ac.ready = ready - } - ac.mu.Unlock() - select { - case <-ctx.Done(): - return nil, toRPCErr(ctx.Err()) - // Wait until the new transport is ready or failed. - case <-ready: - } - } -} - -// tearDown starts to tear down the addrConn. -// TODO(zhaoq): Make this synchronous to avoid unbounded memory consumption in -// some edge cases (e.g., the caller opens and closes many addrConn's in a -// tight loop. -// tearDown doesn't remove ac from ac.cc.conns. -func (ac *addrConn) tearDown(err error) { - ac.cancel() - - ac.mu.Lock() - defer ac.mu.Unlock() - if ac.down != nil { - ac.down(downErrorf(false, false, "%v", err)) - ac.down = nil - } - if err == errConnDrain && ac.transport != nil { - // GracefulClose(...) may be executed multiple times when - // i) receiving multiple GoAway frames from the server; or - // ii) there are concurrent name resolver/Balancer triggered - // address removal and GoAway. - ac.transport.GracefulClose() - } - if ac.state == Shutdown { - return - } - ac.state = Shutdown - ac.tearDownErr = err - ac.stateCV.Broadcast() - if ac.events != nil { - ac.events.Finish() - ac.events = nil - } - if ac.ready != nil { - close(ac.ready) - ac.ready = nil - } - if ac.transport != nil && err != errConnDrain { - ac.transport.Close() - } - return -} diff --git a/vendor/google.golang.org/grpc/codegen.sh b/vendor/google.golang.org/grpc/codegen.sh deleted file mode 100755 index b009488842..0000000000 --- a/vendor/google.golang.org/grpc/codegen.sh +++ /dev/null @@ -1,17 +0,0 @@ -#!/bin/bash - -# This script serves as an example to demonstrate how to generate the gRPC-Go -# interface and the related messages from .proto file. -# -# It assumes the installation of i) Google proto buffer compiler at -# https://github.com/google/protobuf (after v2.6.1) and ii) the Go codegen -# plugin at https://github.com/golang/protobuf (after 2015-02-20). If you have -# not, please install them first. -# -# We recommend running this script at $GOPATH/src. -# -# If this is not what you need, feel free to make your own scripts. Again, this -# script is for demonstration purpose. -# -proto=$1 -protoc --go_out=plugins=grpc:. $proto diff --git a/vendor/google.golang.org/grpc/codes/code_string.go b/vendor/google.golang.org/grpc/codes/code_string.go deleted file mode 100644 index e6762d0845..0000000000 --- a/vendor/google.golang.org/grpc/codes/code_string.go +++ /dev/null @@ -1,16 +0,0 @@ -// generated by stringer -type=Code; DO NOT EDIT - -package codes - -import "fmt" - -const _Code_name = "OKCanceledUnknownInvalidArgumentDeadlineExceededNotFoundAlreadyExistsPermissionDeniedResourceExhaustedFailedPreconditionAbortedOutOfRangeUnimplementedInternalUnavailableDataLossUnauthenticated" - -var _Code_index = [...]uint8{0, 2, 10, 17, 32, 48, 56, 69, 85, 102, 120, 127, 137, 150, 158, 169, 177, 192} - -func (i Code) String() string { - if i+1 >= Code(len(_Code_index)) { - return fmt.Sprintf("Code(%d)", i) - } - return _Code_name[_Code_index[i]:_Code_index[i+1]] -} diff --git a/vendor/google.golang.org/grpc/codes/codes.go b/vendor/google.golang.org/grpc/codes/codes.go deleted file mode 100644 index e14b464acf..0000000000 --- a/vendor/google.golang.org/grpc/codes/codes.go +++ /dev/null @@ -1,159 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -// Package codes defines the canonical error codes used by gRPC. It is -// consistent across various languages. -package codes // import "google.golang.org/grpc/codes" - -// A Code is an unsigned 32-bit error code as defined in the gRPC spec. -type Code uint32 - -//go:generate stringer -type=Code - -const ( - // OK is returned on success. - OK Code = 0 - - // Canceled indicates the operation was cancelled (typically by the caller). - Canceled Code = 1 - - // Unknown error. An example of where this error may be returned is - // if a Status value received from another address space belongs to - // an error-space that is not known in this address space. Also - // errors raised by APIs that do not return enough error information - // may be converted to this error. - Unknown Code = 2 - - // InvalidArgument indicates client specified an invalid argument. - // Note that this differs from FailedPrecondition. It indicates arguments - // that are problematic regardless of the state of the system - // (e.g., a malformed file name). - InvalidArgument Code = 3 - - // DeadlineExceeded means operation expired before completion. - // For operations that change the state of the system, this error may be - // returned even if the operation has completed successfully. For - // example, a successful response from a server could have been delayed - // long enough for the deadline to expire. - DeadlineExceeded Code = 4 - - // NotFound means some requested entity (e.g., file or directory) was - // not found. - NotFound Code = 5 - - // AlreadyExists means an attempt to create an entity failed because one - // already exists. - AlreadyExists Code = 6 - - // PermissionDenied indicates the caller does not have permission to - // execute the specified operation. It must not be used for rejections - // caused by exhausting some resource (use ResourceExhausted - // instead for those errors). It must not be - // used if the caller cannot be identified (use Unauthenticated - // instead for those errors). - PermissionDenied Code = 7 - - // Unauthenticated indicates the request does not have valid - // authentication credentials for the operation. - Unauthenticated Code = 16 - - // ResourceExhausted indicates some resource has been exhausted, perhaps - // a per-user quota, or perhaps the entire file system is out of space. - ResourceExhausted Code = 8 - - // FailedPrecondition indicates operation was rejected because the - // system is not in a state required for the operation's execution. - // For example, directory to be deleted may be non-empty, an rmdir - // operation is applied to a non-directory, etc. - // - // A litmus test that may help a service implementor in deciding - // between FailedPrecondition, Aborted, and Unavailable: - // (a) Use Unavailable if the client can retry just the failing call. - // (b) Use Aborted if the client should retry at a higher-level - // (e.g., restarting a read-modify-write sequence). - // (c) Use FailedPrecondition if the client should not retry until - // the system state has been explicitly fixed. E.g., if an "rmdir" - // fails because the directory is non-empty, FailedPrecondition - // should be returned since the client should not retry unless - // they have first fixed up the directory by deleting files from it. - // (d) Use FailedPrecondition if the client performs conditional - // REST Get/Update/Delete on a resource and the resource on the - // server does not match the condition. E.g., conflicting - // read-modify-write on the same resource. - FailedPrecondition Code = 9 - - // Aborted indicates the operation was aborted, typically due to a - // concurrency issue like sequencer check failures, transaction aborts, - // etc. - // - // See litmus test above for deciding between FailedPrecondition, - // Aborted, and Unavailable. - Aborted Code = 10 - - // OutOfRange means operation was attempted past the valid range. - // E.g., seeking or reading past end of file. - // - // Unlike InvalidArgument, this error indicates a problem that may - // be fixed if the system state changes. For example, a 32-bit file - // system will generate InvalidArgument if asked to read at an - // offset that is not in the range [0,2^32-1], but it will generate - // OutOfRange if asked to read from an offset past the current - // file size. - // - // There is a fair bit of overlap between FailedPrecondition and - // OutOfRange. We recommend using OutOfRange (the more specific - // error) when it applies so that callers who are iterating through - // a space can easily look for an OutOfRange error to detect when - // they are done. - OutOfRange Code = 11 - - // Unimplemented indicates operation is not implemented or not - // supported/enabled in this service. - Unimplemented Code = 12 - - // Internal errors. Means some invariants expected by underlying - // system has been broken. If you see one of these errors, - // something is very broken. - Internal Code = 13 - - // Unavailable indicates the service is currently unavailable. - // This is a most likely a transient condition and may be corrected - // by retrying with a backoff. - // - // See litmus test above for deciding between FailedPrecondition, - // Aborted, and Unavailable. - Unavailable Code = 14 - - // DataLoss indicates unrecoverable data loss or corruption. - DataLoss Code = 15 -) diff --git a/vendor/google.golang.org/grpc/coverage.sh b/vendor/google.golang.org/grpc/coverage.sh deleted file mode 100755 index 120235374a..0000000000 --- a/vendor/google.golang.org/grpc/coverage.sh +++ /dev/null @@ -1,47 +0,0 @@ -#!/bin/bash - -set -e - -workdir=.cover -profile="$workdir/cover.out" -mode=set -end2endtest="google.golang.org/grpc/test" - -generate_cover_data() { - rm -rf "$workdir" - mkdir "$workdir" - - for pkg in "$@"; do - if [ $pkg == "google.golang.org/grpc" -o $pkg == "google.golang.org/grpc/transport" -o $pkg == "google.golang.org/grpc/metadata" -o $pkg == "google.golang.org/grpc/credentials" ] - then - f="$workdir/$(echo $pkg | tr / -)" - go test -covermode="$mode" -coverprofile="$f.cover" "$pkg" - go test -covermode="$mode" -coverpkg "$pkg" -coverprofile="$f.e2e.cover" "$end2endtest" - fi - done - - echo "mode: $mode" >"$profile" - grep -h -v "^mode:" "$workdir"/*.cover >>"$profile" -} - -show_cover_report() { - go tool cover -${1}="$profile" -} - -push_to_coveralls() { - goveralls -coverprofile="$profile" -} - -generate_cover_data $(go list ./...) -show_cover_report func -case "$1" in -"") - ;; ---html) - show_cover_report html ;; ---coveralls) - push_to_coveralls ;; -*) - echo >&2 "error: invalid option: $1" ;; -esac -rm -rf "$workdir" diff --git a/vendor/google.golang.org/grpc/credentials/credentials.go b/vendor/google.golang.org/grpc/credentials/credentials.go deleted file mode 100644 index 13be45742d..0000000000 --- a/vendor/google.golang.org/grpc/credentials/credentials.go +++ /dev/null @@ -1,220 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -// Package credentials implements various credentials supported by gRPC library, -// which encapsulate all the state needed by a client to authenticate with a -// server and make various assertions, e.g., about the client's identity, role, -// or whether it is authorized to make a particular call. -package credentials // import "google.golang.org/grpc/credentials" - -import ( - "crypto/tls" - "crypto/x509" - "errors" - "fmt" - "io/ioutil" - "net" - "strings" - - "golang.org/x/net/context" -) - -var ( - // alpnProtoStr are the specified application level protocols for gRPC. - alpnProtoStr = []string{"h2"} -) - -// PerRPCCredentials defines the common interface for the credentials which need to -// attach security information to every RPC (e.g., oauth2). -type PerRPCCredentials interface { - // GetRequestMetadata gets the current request metadata, refreshing - // tokens if required. This should be called by the transport layer on - // each request, and the data should be populated in headers or other - // context. uri is the URI of the entry point for the request. When - // supported by the underlying implementation, ctx can be used for - // timeout and cancellation. - // TODO(zhaoq): Define the set of the qualified keys instead of leaving - // it as an arbitrary string. - GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) - // RequireTransportSecurity indicates whether the credentials requires - // transport security. - RequireTransportSecurity() bool -} - -// ProtocolInfo provides information regarding the gRPC wire protocol version, -// security protocol, security protocol version in use, etc. -type ProtocolInfo struct { - // ProtocolVersion is the gRPC wire protocol version. - ProtocolVersion string - // SecurityProtocol is the security protocol in use. - SecurityProtocol string - // SecurityVersion is the security protocol version. - SecurityVersion string -} - -// AuthInfo defines the common interface for the auth information the users are interested in. -type AuthInfo interface { - AuthType() string -} - -var ( - // ErrConnDispatched indicates that rawConn has been dispatched out of gRPC - // and the caller should not close rawConn. - ErrConnDispatched = errors.New("credentials: rawConn is dispatched out of gRPC") -) - -// TransportCredentials defines the common interface for all the live gRPC wire -// protocols and supported transport security protocols (e.g., TLS, SSL). -type TransportCredentials interface { - // ClientHandshake does the authentication handshake specified by the corresponding - // authentication protocol on rawConn for clients. It returns the authenticated - // connection and the corresponding auth information about the connection. - // Implementations must use the provided context to implement timely cancellation. - ClientHandshake(context.Context, string, net.Conn) (net.Conn, AuthInfo, error) - // ServerHandshake does the authentication handshake for servers. It returns - // the authenticated connection and the corresponding auth information about - // the connection. - ServerHandshake(net.Conn) (net.Conn, AuthInfo, error) - // Info provides the ProtocolInfo of this TransportCredentials. - Info() ProtocolInfo -} - -// TLSInfo contains the auth information for a TLS authenticated connection. -// It implements the AuthInfo interface. -type TLSInfo struct { - State tls.ConnectionState -} - -// AuthType returns the type of TLSInfo as a string. -func (t TLSInfo) AuthType() string { - return "tls" -} - -// tlsCreds is the credentials required for authenticating a connection using TLS. -type tlsCreds struct { - // TLS configuration - config *tls.Config -} - -func (c tlsCreds) Info() ProtocolInfo { - return ProtocolInfo{ - SecurityProtocol: "tls", - SecurityVersion: "1.2", - } -} - -// GetRequestMetadata returns nil, nil since TLS credentials does not have -// metadata. -func (c *tlsCreds) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) { - return nil, nil -} - -func (c *tlsCreds) RequireTransportSecurity() bool { - return true -} - -func (c *tlsCreds) ClientHandshake(ctx context.Context, addr string, rawConn net.Conn) (_ net.Conn, _ AuthInfo, err error) { - // use local cfg to avoid clobbering ServerName if using multiple endpoints - cfg := cloneTLSConfig(c.config) - if cfg.ServerName == "" { - colonPos := strings.LastIndex(addr, ":") - if colonPos == -1 { - colonPos = len(addr) - } - cfg.ServerName = addr[:colonPos] - } - conn := tls.Client(rawConn, cfg) - errChannel := make(chan error, 1) - go func() { - errChannel <- conn.Handshake() - }() - select { - case err := <-errChannel: - if err != nil { - return nil, nil, err - } - case <-ctx.Done(): - return nil, nil, ctx.Err() - } - // TODO(zhaoq): Omit the auth info for client now. It is more for - // information than anything else. - return conn, nil, nil -} - -func (c *tlsCreds) ServerHandshake(rawConn net.Conn) (net.Conn, AuthInfo, error) { - conn := tls.Server(rawConn, c.config) - if err := conn.Handshake(); err != nil { - return nil, nil, err - } - return conn, TLSInfo{conn.ConnectionState()}, nil -} - -// NewTLS uses c to construct a TransportCredentials based on TLS. -func NewTLS(c *tls.Config) TransportCredentials { - tc := &tlsCreds{cloneTLSConfig(c)} - tc.config.NextProtos = alpnProtoStr - return tc -} - -// NewClientTLSFromCert constructs a TLS from the input certificate for client. -func NewClientTLSFromCert(cp *x509.CertPool, serverName string) TransportCredentials { - return NewTLS(&tls.Config{ServerName: serverName, RootCAs: cp}) -} - -// NewClientTLSFromFile constructs a TLS from the input certificate file for client. -func NewClientTLSFromFile(certFile, serverName string) (TransportCredentials, error) { - b, err := ioutil.ReadFile(certFile) - if err != nil { - return nil, err - } - cp := x509.NewCertPool() - if !cp.AppendCertsFromPEM(b) { - return nil, fmt.Errorf("credentials: failed to append certificates") - } - return NewTLS(&tls.Config{ServerName: serverName, RootCAs: cp}), nil -} - -// NewServerTLSFromCert constructs a TLS from the input certificate for server. -func NewServerTLSFromCert(cert *tls.Certificate) TransportCredentials { - return NewTLS(&tls.Config{Certificates: []tls.Certificate{*cert}}) -} - -// NewServerTLSFromFile constructs a TLS from the input certificate file and key -// file for server. -func NewServerTLSFromFile(certFile, keyFile string) (TransportCredentials, error) { - cert, err := tls.LoadX509KeyPair(certFile, keyFile) - if err != nil { - return nil, err - } - return NewTLS(&tls.Config{Certificates: []tls.Certificate{cert}}), nil -} diff --git a/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go b/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go deleted file mode 100644 index 9647b9ec83..0000000000 --- a/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go +++ /dev/null @@ -1,76 +0,0 @@ -// +build go1.7 - -/* - * - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package credentials - -import ( - "crypto/tls" -) - -// cloneTLSConfig returns a shallow clone of the exported -// fields of cfg, ignoring the unexported sync.Once, which -// contains a mutex and must not be copied. -// -// If cfg is nil, a new zero tls.Config is returned. -// -// TODO replace this function with official clone function. -func cloneTLSConfig(cfg *tls.Config) *tls.Config { - if cfg == nil { - return &tls.Config{} - } - return &tls.Config{ - Rand: cfg.Rand, - Time: cfg.Time, - Certificates: cfg.Certificates, - NameToCertificate: cfg.NameToCertificate, - GetCertificate: cfg.GetCertificate, - RootCAs: cfg.RootCAs, - NextProtos: cfg.NextProtos, - ServerName: cfg.ServerName, - ClientAuth: cfg.ClientAuth, - ClientCAs: cfg.ClientCAs, - InsecureSkipVerify: cfg.InsecureSkipVerify, - CipherSuites: cfg.CipherSuites, - PreferServerCipherSuites: cfg.PreferServerCipherSuites, - SessionTicketsDisabled: cfg.SessionTicketsDisabled, - SessionTicketKey: cfg.SessionTicketKey, - ClientSessionCache: cfg.ClientSessionCache, - MinVersion: cfg.MinVersion, - MaxVersion: cfg.MaxVersion, - CurvePreferences: cfg.CurvePreferences, - DynamicRecordSizingDisabled: cfg.DynamicRecordSizingDisabled, - Renegotiation: cfg.Renegotiation, - } -} diff --git a/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go b/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go deleted file mode 100644 index 09b8d12c79..0000000000 --- a/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go +++ /dev/null @@ -1,74 +0,0 @@ -// +build !go1.7 - -/* - * - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package credentials - -import ( - "crypto/tls" -) - -// cloneTLSConfig returns a shallow clone of the exported -// fields of cfg, ignoring the unexported sync.Once, which -// contains a mutex and must not be copied. -// -// If cfg is nil, a new zero tls.Config is returned. -// -// TODO replace this function with official clone function. -func cloneTLSConfig(cfg *tls.Config) *tls.Config { - if cfg == nil { - return &tls.Config{} - } - return &tls.Config{ - Rand: cfg.Rand, - Time: cfg.Time, - Certificates: cfg.Certificates, - NameToCertificate: cfg.NameToCertificate, - GetCertificate: cfg.GetCertificate, - RootCAs: cfg.RootCAs, - NextProtos: cfg.NextProtos, - ServerName: cfg.ServerName, - ClientAuth: cfg.ClientAuth, - ClientCAs: cfg.ClientCAs, - InsecureSkipVerify: cfg.InsecureSkipVerify, - CipherSuites: cfg.CipherSuites, - PreferServerCipherSuites: cfg.PreferServerCipherSuites, - SessionTicketsDisabled: cfg.SessionTicketsDisabled, - SessionTicketKey: cfg.SessionTicketKey, - ClientSessionCache: cfg.ClientSessionCache, - MinVersion: cfg.MinVersion, - MaxVersion: cfg.MaxVersion, - CurvePreferences: cfg.CurvePreferences, - } -} diff --git a/vendor/google.golang.org/grpc/doc.go b/vendor/google.golang.org/grpc/doc.go deleted file mode 100644 index a35f218852..0000000000 --- a/vendor/google.golang.org/grpc/doc.go +++ /dev/null @@ -1,6 +0,0 @@ -/* -Package grpc implements an RPC system called gRPC. - -See www.grpc.io for more information about gRPC. -*/ -package grpc // import "google.golang.org/grpc" diff --git a/vendor/google.golang.org/grpc/grpclog/logger.go b/vendor/google.golang.org/grpc/grpclog/logger.go deleted file mode 100644 index 3b2933079e..0000000000 --- a/vendor/google.golang.org/grpc/grpclog/logger.go +++ /dev/null @@ -1,93 +0,0 @@ -/* - * - * Copyright 2015, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -/* -Package grpclog defines logging for grpc. -*/ -package grpclog // import "google.golang.org/grpc/grpclog" - -import ( - "log" - "os" -) - -// Use golang's standard logger by default. -// Access is not mutex-protected: do not modify except in init() -// functions. -var logger Logger = log.New(os.Stderr, "", log.LstdFlags) - -// Logger mimics golang's standard Logger as an interface. -type Logger interface { - Fatal(args ...interface{}) - Fatalf(format string, args ...interface{}) - Fatalln(args ...interface{}) - Print(args ...interface{}) - Printf(format string, args ...interface{}) - Println(args ...interface{}) -} - -// SetLogger sets the logger that is used in grpc. Call only from -// init() functions. -func SetLogger(l Logger) { - logger = l -} - -// Fatal is equivalent to Print() followed by a call to os.Exit() with a non-zero exit code. -func Fatal(args ...interface{}) { - logger.Fatal(args...) -} - -// Fatalf is equivalent to Printf() followed by a call to os.Exit() with a non-zero exit code. -func Fatalf(format string, args ...interface{}) { - logger.Fatalf(format, args...) -} - -// Fatalln is equivalent to Println() followed by a call to os.Exit()) with a non-zero exit code. -func Fatalln(args ...interface{}) { - logger.Fatalln(args...) -} - -// Print prints to the logger. Arguments are handled in the manner of fmt.Print. -func Print(args ...interface{}) { - logger.Print(args...) -} - -// Printf prints to the logger. Arguments are handled in the manner of fmt.Printf. -func Printf(format string, args ...interface{}) { - logger.Printf(format, args...) -} - -// Println prints to the logger. Arguments are handled in the manner of fmt.Println. -func Println(args ...interface{}) { - logger.Println(args...) -} diff --git a/vendor/google.golang.org/grpc/interceptor.go b/vendor/google.golang.org/grpc/interceptor.go deleted file mode 100644 index 588f59e5ab..0000000000 --- a/vendor/google.golang.org/grpc/interceptor.go +++ /dev/null @@ -1,74 +0,0 @@ -/* - * - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "golang.org/x/net/context" -) - -// UnaryServerInfo consists of various information about a unary RPC on -// server side. All per-rpc information may be mutated by the interceptor. -type UnaryServerInfo struct { - // Server is the service implementation the user provides. This is read-only. - Server interface{} - // FullMethod is the full RPC method string, i.e., /package.service/method. - FullMethod string -} - -// UnaryHandler defines the handler invoked by UnaryServerInterceptor to complete the normal -// execution of a unary RPC. -type UnaryHandler func(ctx context.Context, req interface{}) (interface{}, error) - -// UnaryServerInterceptor provides a hook to intercept the execution of a unary RPC on the server. info -// contains all the information of this RPC the interceptor can operate on. And handler is the wrapper -// of the service method implementation. It is the responsibility of the interceptor to invoke handler -// to complete the RPC. -type UnaryServerInterceptor func(ctx context.Context, req interface{}, info *UnaryServerInfo, handler UnaryHandler) (resp interface{}, err error) - -// StreamServerInfo consists of various information about a streaming RPC on -// server side. All per-rpc information may be mutated by the interceptor. -type StreamServerInfo struct { - // FullMethod is the full RPC method string, i.e., /package.service/method. - FullMethod string - // IsClientStream indicates whether the RPC is a client streaming RPC. - IsClientStream bool - // IsServerStream indicates whether the RPC is a server streaming RPC. - IsServerStream bool -} - -// StreamServerInterceptor provides a hook to intercept the execution of a streaming RPC on the server. -// info contains all the information of this RPC the interceptor can operate on. And handler is the -// service method implementation. It is the responsibility of the interceptor to invoke handler to -// complete the RPC. -type StreamServerInterceptor func(srv interface{}, ss ServerStream, info *StreamServerInfo, handler StreamHandler) error diff --git a/vendor/google.golang.org/grpc/internal/internal.go b/vendor/google.golang.org/grpc/internal/internal.go deleted file mode 100644 index 5489143a85..0000000000 --- a/vendor/google.golang.org/grpc/internal/internal.go +++ /dev/null @@ -1,49 +0,0 @@ -/* - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -// Package internal contains gRPC-internal code for testing, to avoid polluting -// the godoc of the top-level grpc package. -package internal - -// TestingCloseConns closes all existing transports but keeps -// grpcServer.lis accepting new connections. -// -// The provided grpcServer must be of type *grpc.Server. It is untyped -// for circular dependency reasons. -var TestingCloseConns func(grpcServer interface{}) - -// TestingUseHandlerImpl enables the http.Handler-based server implementation. -// It must be called before Serve and requires TLS credentials. -// -// The provided grpcServer must be of type *grpc.Server. It is untyped -// for circular dependency reasons. -var TestingUseHandlerImpl func(grpcServer interface{}) diff --git a/vendor/google.golang.org/grpc/metadata/metadata.go b/vendor/google.golang.org/grpc/metadata/metadata.go deleted file mode 100644 index 954c0f77c6..0000000000 --- a/vendor/google.golang.org/grpc/metadata/metadata.go +++ /dev/null @@ -1,140 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -// Package metadata define the structure of the metadata supported by gRPC library. -package metadata // import "google.golang.org/grpc/metadata" - -import ( - "encoding/base64" - "fmt" - "strings" - - "golang.org/x/net/context" -) - -const ( - binHdrSuffix = "-bin" -) - -// encodeKeyValue encodes key and value qualified for transmission via gRPC. -// Transmitting binary headers violates HTTP/2 spec. -// TODO(zhaoq): Maybe check if k is ASCII also. -func encodeKeyValue(k, v string) (string, string) { - k = strings.ToLower(k) - if strings.HasSuffix(k, binHdrSuffix) { - val := base64.StdEncoding.EncodeToString([]byte(v)) - v = string(val) - } - return k, v -} - -// DecodeKeyValue returns the original key and value corresponding to the -// encoded data in k, v. -// If k is a binary header and v contains comma, v is split on comma before decoded, -// and the decoded v will be joined with comma before returned. -func DecodeKeyValue(k, v string) (string, string, error) { - if !strings.HasSuffix(k, binHdrSuffix) { - return k, v, nil - } - vvs := strings.Split(v, ",") - for i, vv := range vvs { - val, err := base64.StdEncoding.DecodeString(vv) - if err != nil { - return "", "", err - } - vvs[i] = string(val) - } - return k, strings.Join(vvs, ","), nil -} - -// MD is a mapping from metadata keys to values. Users should use the following -// two convenience functions New and Pairs to generate MD. -type MD map[string][]string - -// New creates a MD from given key-value map. -func New(m map[string]string) MD { - md := MD{} - for k, v := range m { - key, val := encodeKeyValue(k, v) - md[key] = append(md[key], val) - } - return md -} - -// Pairs returns an MD formed by the mapping of key, value ... -// Pairs panics if len(kv) is odd. -func Pairs(kv ...string) MD { - if len(kv)%2 == 1 { - panic(fmt.Sprintf("metadata: Pairs got the odd number of input pairs for metadata: %d", len(kv))) - } - md := MD{} - var k string - for i, s := range kv { - if i%2 == 0 { - k = s - continue - } - key, val := encodeKeyValue(k, s) - md[key] = append(md[key], val) - } - return md -} - -// Len returns the number of items in md. -func (md MD) Len() int { - return len(md) -} - -// Copy returns a copy of md. -func (md MD) Copy() MD { - out := MD{} - for k, v := range md { - for _, i := range v { - out[k] = append(out[k], i) - } - } - return out -} - -type mdKey struct{} - -// NewContext creates a new context with md attached. -func NewContext(ctx context.Context, md MD) context.Context { - return context.WithValue(ctx, mdKey{}, md) -} - -// FromContext returns the MD in ctx if it exists. -func FromContext(ctx context.Context) (md MD, ok bool) { - md, ok = ctx.Value(mdKey{}).(MD) - return -} diff --git a/vendor/google.golang.org/grpc/naming/naming.go b/vendor/google.golang.org/grpc/naming/naming.go deleted file mode 100644 index c2e0871e6f..0000000000 --- a/vendor/google.golang.org/grpc/naming/naming.go +++ /dev/null @@ -1,74 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -// Package naming defines the naming API and related data structures for gRPC. -// The interface is EXPERIMENTAL and may be suject to change. -package naming - -// Operation defines the corresponding operations for a name resolution change. -type Operation uint8 - -const ( - // Add indicates a new address is added. - Add Operation = iota - // Delete indicates an exisiting address is deleted. - Delete -) - -// Update defines a name resolution update. Notice that it is not valid having both -// empty string Addr and nil Metadata in an Update. -type Update struct { - // Op indicates the operation of the update. - Op Operation - // Addr is the updated address. It is empty string if there is no address update. - Addr string - // Metadata is the updated metadata. It is nil if there is no metadata update. - // Metadata is not required for a custom naming implementation. - Metadata interface{} -} - -// Resolver creates a Watcher for a target to track its resolution changes. -type Resolver interface { - // Resolve creates a Watcher for target. - Resolve(target string) (Watcher, error) -} - -// Watcher watches for the updates on the specified target. -type Watcher interface { - // Next blocks until an update or error happens. It may return one or more - // updates. The first call should get the full set of the results. It should - // return an error if and only if Watcher cannot recover. - Next() ([]*Update, error) - // Close closes the Watcher. - Close() -} diff --git a/vendor/google.golang.org/grpc/peer/peer.go b/vendor/google.golang.org/grpc/peer/peer.go deleted file mode 100644 index bfa6205ba9..0000000000 --- a/vendor/google.golang.org/grpc/peer/peer.go +++ /dev/null @@ -1,65 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -// Package peer defines various peer information associated with RPCs and -// corresponding utils. -package peer - -import ( - "net" - - "golang.org/x/net/context" - "google.golang.org/grpc/credentials" -) - -// Peer contains the information of the peer for an RPC. -type Peer struct { - // Addr is the peer address. - Addr net.Addr - // AuthInfo is the authentication information of the transport. - // It is nil if there is no transport security being used. - AuthInfo credentials.AuthInfo -} - -type peerKey struct{} - -// NewContext creates a new context with peer information attached. -func NewContext(ctx context.Context, p *Peer) context.Context { - return context.WithValue(ctx, peerKey{}, p) -} - -// FromContext returns the peer information in ctx if it exists. -func FromContext(ctx context.Context) (p *Peer, ok bool) { - p, ok = ctx.Value(peerKey{}).(*Peer) - return -} diff --git a/vendor/google.golang.org/grpc/rpc_util.go b/vendor/google.golang.org/grpc/rpc_util.go deleted file mode 100644 index 35ac9cc7b0..0000000000 --- a/vendor/google.golang.org/grpc/rpc_util.go +++ /dev/null @@ -1,457 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "bytes" - "compress/gzip" - "encoding/binary" - "fmt" - "io" - "io/ioutil" - "math" - "os" - - "github.com/golang/protobuf/proto" - "golang.org/x/net/context" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/transport" -) - -// Codec defines the interface gRPC uses to encode and decode messages. -type Codec interface { - // Marshal returns the wire format of v. - Marshal(v interface{}) ([]byte, error) - // Unmarshal parses the wire format into v. - Unmarshal(data []byte, v interface{}) error - // String returns the name of the Codec implementation. The returned - // string will be used as part of content type in transmission. - String() string -} - -// protoCodec is a Codec implementation with protobuf. It is the default codec for gRPC. -type protoCodec struct{} - -func (protoCodec) Marshal(v interface{}) ([]byte, error) { - return proto.Marshal(v.(proto.Message)) -} - -func (protoCodec) Unmarshal(data []byte, v interface{}) error { - return proto.Unmarshal(data, v.(proto.Message)) -} - -func (protoCodec) String() string { - return "proto" -} - -// Compressor defines the interface gRPC uses to compress a message. -type Compressor interface { - // Do compresses p into w. - Do(w io.Writer, p []byte) error - // Type returns the compression algorithm the Compressor uses. - Type() string -} - -// NewGZIPCompressor creates a Compressor based on GZIP. -func NewGZIPCompressor() Compressor { - return &gzipCompressor{} -} - -type gzipCompressor struct { -} - -func (c *gzipCompressor) Do(w io.Writer, p []byte) error { - z := gzip.NewWriter(w) - if _, err := z.Write(p); err != nil { - return err - } - return z.Close() -} - -func (c *gzipCompressor) Type() string { - return "gzip" -} - -// Decompressor defines the interface gRPC uses to decompress a message. -type Decompressor interface { - // Do reads the data from r and uncompress them. - Do(r io.Reader) ([]byte, error) - // Type returns the compression algorithm the Decompressor uses. - Type() string -} - -type gzipDecompressor struct { -} - -// NewGZIPDecompressor creates a Decompressor based on GZIP. -func NewGZIPDecompressor() Decompressor { - return &gzipDecompressor{} -} - -func (d *gzipDecompressor) Do(r io.Reader) ([]byte, error) { - z, err := gzip.NewReader(r) - if err != nil { - return nil, err - } - defer z.Close() - return ioutil.ReadAll(z) -} - -func (d *gzipDecompressor) Type() string { - return "gzip" -} - -// callInfo contains all related configuration and information about an RPC. -type callInfo struct { - failFast bool - headerMD metadata.MD - trailerMD metadata.MD - traceInfo traceInfo // in trace.go -} - -var defaultCallInfo = callInfo{failFast: true} - -// CallOption configures a Call before it starts or extracts information from -// a Call after it completes. -type CallOption interface { - // before is called before the call is sent to any server. If before - // returns a non-nil error, the RPC fails with that error. - before(*callInfo) error - - // after is called after the call has completed. after cannot return an - // error, so any failures should be reported via output parameters. - after(*callInfo) -} - -type beforeCall func(c *callInfo) error - -func (o beforeCall) before(c *callInfo) error { return o(c) } -func (o beforeCall) after(c *callInfo) {} - -type afterCall func(c *callInfo) - -func (o afterCall) before(c *callInfo) error { return nil } -func (o afterCall) after(c *callInfo) { o(c) } - -// Header returns a CallOptions that retrieves the header metadata -// for a unary RPC. -func Header(md *metadata.MD) CallOption { - return afterCall(func(c *callInfo) { - *md = c.headerMD - }) -} - -// Trailer returns a CallOptions that retrieves the trailer metadata -// for a unary RPC. -func Trailer(md *metadata.MD) CallOption { - return afterCall(func(c *callInfo) { - *md = c.trailerMD - }) -} - -// FailFast configures the action to take when an RPC is attempted on broken -// connections or unreachable servers. If failfast is true, the RPC will fail -// immediately. Otherwise, the RPC client will block the call until a -// connection is available (or the call is canceled or times out) and will retry -// the call if it fails due to a transient error. Please refer to -// https://github.com/grpc/grpc/blob/master/doc/fail_fast.md -func FailFast(failFast bool) CallOption { - return beforeCall(func(c *callInfo) error { - c.failFast = failFast - return nil - }) -} - -// The format of the payload: compressed or not? -type payloadFormat uint8 - -const ( - compressionNone payloadFormat = iota // no compression - compressionMade -) - -// parser reads complete gRPC messages from the underlying reader. -type parser struct { - // r is the underlying reader. - // See the comment on recvMsg for the permissible - // error types. - r io.Reader - - // The header of a gRPC message. Find more detail - // at http://www.grpc.io/docs/guides/wire.html. - header [5]byte -} - -// recvMsg reads a complete gRPC message from the stream. -// -// It returns the message and its payload (compression/encoding) -// format. The caller owns the returned msg memory. -// -// If there is an error, possible values are: -// * io.EOF, when no messages remain -// * io.ErrUnexpectedEOF -// * of type transport.ConnectionError -// * of type transport.StreamError -// No other error values or types must be returned, which also means -// that the underlying io.Reader must not return an incompatible -// error. -func (p *parser) recvMsg(maxMsgSize int) (pf payloadFormat, msg []byte, err error) { - if _, err := io.ReadFull(p.r, p.header[:]); err != nil { - return 0, nil, err - } - - pf = payloadFormat(p.header[0]) - length := binary.BigEndian.Uint32(p.header[1:]) - - if length == 0 { - return pf, nil, nil - } - if length > uint32(maxMsgSize) { - return 0, nil, Errorf(codes.Internal, "grpc: received message length %d exceeding the max size %d", length, maxMsgSize) - } - // TODO(bradfitz,zhaoq): garbage. reuse buffer after proto decoding instead - // of making it for each message: - msg = make([]byte, int(length)) - if _, err := io.ReadFull(p.r, msg); err != nil { - if err == io.EOF { - err = io.ErrUnexpectedEOF - } - return 0, nil, err - } - return pf, msg, nil -} - -// encode serializes msg and prepends the message header. If msg is nil, it -// generates the message header of 0 message length. -func encode(c Codec, msg interface{}, cp Compressor, cbuf *bytes.Buffer) ([]byte, error) { - var b []byte - var length uint - if msg != nil { - var err error - // TODO(zhaoq): optimize to reduce memory alloc and copying. - b, err = c.Marshal(msg) - if err != nil { - return nil, err - } - if cp != nil { - if err := cp.Do(cbuf, b); err != nil { - return nil, err - } - b = cbuf.Bytes() - } - length = uint(len(b)) - } - if length > math.MaxUint32 { - return nil, Errorf(codes.InvalidArgument, "grpc: message too large (%d bytes)", length) - } - - const ( - payloadLen = 1 - sizeLen = 4 - ) - - var buf = make([]byte, payloadLen+sizeLen+len(b)) - - // Write payload format - if cp == nil { - buf[0] = byte(compressionNone) - } else { - buf[0] = byte(compressionMade) - } - // Write length of b into buf - binary.BigEndian.PutUint32(buf[1:], uint32(length)) - // Copy encoded msg to buf - copy(buf[5:], b) - - return buf, nil -} - -func checkRecvPayload(pf payloadFormat, recvCompress string, dc Decompressor) error { - switch pf { - case compressionNone: - case compressionMade: - if dc == nil || recvCompress != dc.Type() { - return transport.StreamErrorf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", recvCompress) - } - default: - return transport.StreamErrorf(codes.Internal, "grpc: received unexpected payload format %d", pf) - } - return nil -} - -func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{}, maxMsgSize int) error { - pf, d, err := p.recvMsg(maxMsgSize) - if err != nil { - return err - } - if err := checkRecvPayload(pf, s.RecvCompress(), dc); err != nil { - return err - } - if pf == compressionMade { - d, err = dc.Do(bytes.NewReader(d)) - if err != nil { - return Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err) - } - } - if len(d) > maxMsgSize { - // TODO: Revisit the error code. Currently keep it consistent with java - // implementation. - return Errorf(codes.Internal, "grpc: received a message of %d bytes exceeding %d limit", len(d), maxMsgSize) - } - if err := c.Unmarshal(d, m); err != nil { - return Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err) - } - return nil -} - -// rpcError defines the status from an RPC. -type rpcError struct { - code codes.Code - desc string -} - -func (e *rpcError) Error() string { - return fmt.Sprintf("rpc error: code = %d desc = %s", e.code, e.desc) -} - -// Code returns the error code for err if it was produced by the rpc system. -// Otherwise, it returns codes.Unknown. -func Code(err error) codes.Code { - if err == nil { - return codes.OK - } - if e, ok := err.(*rpcError); ok { - return e.code - } - return codes.Unknown -} - -// ErrorDesc returns the error description of err if it was produced by the rpc system. -// Otherwise, it returns err.Error() or empty string when err is nil. -func ErrorDesc(err error) string { - if err == nil { - return "" - } - if e, ok := err.(*rpcError); ok { - return e.desc - } - return err.Error() -} - -// Errorf returns an error containing an error code and a description; -// Errorf returns nil if c is OK. -func Errorf(c codes.Code, format string, a ...interface{}) error { - if c == codes.OK { - return nil - } - return &rpcError{ - code: c, - desc: fmt.Sprintf(format, a...), - } -} - -// toRPCErr converts an error into a rpcError. -func toRPCErr(err error) error { - switch e := err.(type) { - case *rpcError: - return err - case transport.StreamError: - return &rpcError{ - code: e.Code, - desc: e.Desc, - } - case transport.ConnectionError: - return &rpcError{ - code: codes.Internal, - desc: e.Desc, - } - default: - switch err { - case context.DeadlineExceeded: - return &rpcError{ - code: codes.DeadlineExceeded, - desc: err.Error(), - } - case context.Canceled: - return &rpcError{ - code: codes.Canceled, - desc: err.Error(), - } - case ErrClientConnClosing: - return &rpcError{ - code: codes.FailedPrecondition, - desc: err.Error(), - } - } - - } - return Errorf(codes.Unknown, "%v", err) -} - -// convertCode converts a standard Go error into its canonical code. Note that -// this is only used to translate the error returned by the server applications. -func convertCode(err error) codes.Code { - switch err { - case nil: - return codes.OK - case io.EOF: - return codes.OutOfRange - case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF: - return codes.FailedPrecondition - case os.ErrInvalid: - return codes.InvalidArgument - case context.Canceled: - return codes.Canceled - case context.DeadlineExceeded: - return codes.DeadlineExceeded - } - switch { - case os.IsExist(err): - return codes.AlreadyExists - case os.IsNotExist(err): - return codes.NotFound - case os.IsPermission(err): - return codes.PermissionDenied - } - return codes.Unknown -} - -// SupportPackageIsVersion3 is referenced from generated protocol buffer files -// to assert that that code is compatible with this version of the grpc package. -// -// This constant may be renamed in the future if a change in the generated code -// requires a synchronised update of grpc-go and protoc-gen-go. This constant -// should not be referenced from any other code. -const SupportPackageIsVersion3 = true diff --git a/vendor/google.golang.org/grpc/server.go b/vendor/google.golang.org/grpc/server.go deleted file mode 100644 index b2a825ad0b..0000000000 --- a/vendor/google.golang.org/grpc/server.go +++ /dev/null @@ -1,897 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "bytes" - "errors" - "fmt" - "io" - "net" - "net/http" - "reflect" - "runtime" - "strings" - "sync" - "time" - - "golang.org/x/net/context" - "golang.org/x/net/http2" - "golang.org/x/net/trace" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/credentials" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/internal" - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/transport" -) - -type methodHandler func(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor UnaryServerInterceptor) (interface{}, error) - -// MethodDesc represents an RPC service's method specification. -type MethodDesc struct { - MethodName string - Handler methodHandler -} - -// ServiceDesc represents an RPC service's specification. -type ServiceDesc struct { - ServiceName string - // The pointer to the service interface. Used to check whether the user - // provided implementation satisfies the interface requirements. - HandlerType interface{} - Methods []MethodDesc - Streams []StreamDesc - Metadata interface{} -} - -// service consists of the information of the server serving this service and -// the methods in this service. -type service struct { - server interface{} // the server for service methods - md map[string]*MethodDesc - sd map[string]*StreamDesc - mdata interface{} -} - -// Server is a gRPC server to serve RPC requests. -type Server struct { - opts options - - mu sync.Mutex // guards following - lis map[net.Listener]bool - conns map[io.Closer]bool - drain bool - // A CondVar to let GracefulStop() blocks until all the pending RPCs are finished - // and all the transport goes away. - cv *sync.Cond - m map[string]*service // service name -> service info - events trace.EventLog -} - -type options struct { - creds credentials.TransportCredentials - codec Codec - cp Compressor - dc Decompressor - maxMsgSize int - unaryInt UnaryServerInterceptor - streamInt StreamServerInterceptor - maxConcurrentStreams uint32 - useHandlerImpl bool // use http.Handler-based server -} - -var defaultMaxMsgSize = 1024 * 1024 * 4 // use 4MB as the default message size limit - -// A ServerOption sets options. -type ServerOption func(*options) - -// CustomCodec returns a ServerOption that sets a codec for message marshaling and unmarshaling. -func CustomCodec(codec Codec) ServerOption { - return func(o *options) { - o.codec = codec - } -} - -// RPCCompressor returns a ServerOption that sets a compressor for outbound messages. -func RPCCompressor(cp Compressor) ServerOption { - return func(o *options) { - o.cp = cp - } -} - -// RPCDecompressor returns a ServerOption that sets a decompressor for inbound messages. -func RPCDecompressor(dc Decompressor) ServerOption { - return func(o *options) { - o.dc = dc - } -} - -// MaxMsgSize returns a ServerOption to set the max message size in bytes for inbound mesages. -// If this is not set, gRPC uses the default 4MB. -func MaxMsgSize(m int) ServerOption { - return func(o *options) { - o.maxMsgSize = m - } -} - -// MaxConcurrentStreams returns a ServerOption that will apply a limit on the number -// of concurrent streams to each ServerTransport. -func MaxConcurrentStreams(n uint32) ServerOption { - return func(o *options) { - o.maxConcurrentStreams = n - } -} - -// Creds returns a ServerOption that sets credentials for server connections. -func Creds(c credentials.TransportCredentials) ServerOption { - return func(o *options) { - o.creds = c - } -} - -// UnaryInterceptor returns a ServerOption that sets the UnaryServerInterceptor for the -// server. Only one unary interceptor can be installed. The construction of multiple -// interceptors (e.g., chaining) can be implemented at the caller. -func UnaryInterceptor(i UnaryServerInterceptor) ServerOption { - return func(o *options) { - if o.unaryInt != nil { - panic("The unary server interceptor has been set.") - } - o.unaryInt = i - } -} - -// StreamInterceptor returns a ServerOption that sets the StreamServerInterceptor for the -// server. Only one stream interceptor can be installed. -func StreamInterceptor(i StreamServerInterceptor) ServerOption { - return func(o *options) { - if o.streamInt != nil { - panic("The stream server interceptor has been set.") - } - o.streamInt = i - } -} - -// NewServer creates a gRPC server which has no service registered and has not -// started to accept requests yet. -func NewServer(opt ...ServerOption) *Server { - var opts options - opts.maxMsgSize = defaultMaxMsgSize - for _, o := range opt { - o(&opts) - } - if opts.codec == nil { - // Set the default codec. - opts.codec = protoCodec{} - } - s := &Server{ - lis: make(map[net.Listener]bool), - opts: opts, - conns: make(map[io.Closer]bool), - m: make(map[string]*service), - } - s.cv = sync.NewCond(&s.mu) - if EnableTracing { - _, file, line, _ := runtime.Caller(1) - s.events = trace.NewEventLog("grpc.Server", fmt.Sprintf("%s:%d", file, line)) - } - return s -} - -// printf records an event in s's event log, unless s has been stopped. -// REQUIRES s.mu is held. -func (s *Server) printf(format string, a ...interface{}) { - if s.events != nil { - s.events.Printf(format, a...) - } -} - -// errorf records an error in s's event log, unless s has been stopped. -// REQUIRES s.mu is held. -func (s *Server) errorf(format string, a ...interface{}) { - if s.events != nil { - s.events.Errorf(format, a...) - } -} - -// RegisterService register a service and its implementation to the gRPC -// server. Called from the IDL generated code. This must be called before -// invoking Serve. -func (s *Server) RegisterService(sd *ServiceDesc, ss interface{}) { - ht := reflect.TypeOf(sd.HandlerType).Elem() - st := reflect.TypeOf(ss) - if !st.Implements(ht) { - grpclog.Fatalf("grpc: Server.RegisterService found the handler of type %v that does not satisfy %v", st, ht) - } - s.register(sd, ss) -} - -func (s *Server) register(sd *ServiceDesc, ss interface{}) { - s.mu.Lock() - defer s.mu.Unlock() - s.printf("RegisterService(%q)", sd.ServiceName) - if _, ok := s.m[sd.ServiceName]; ok { - grpclog.Fatalf("grpc: Server.RegisterService found duplicate service registration for %q", sd.ServiceName) - } - srv := &service{ - server: ss, - md: make(map[string]*MethodDesc), - sd: make(map[string]*StreamDesc), - mdata: sd.Metadata, - } - for i := range sd.Methods { - d := &sd.Methods[i] - srv.md[d.MethodName] = d - } - for i := range sd.Streams { - d := &sd.Streams[i] - srv.sd[d.StreamName] = d - } - s.m[sd.ServiceName] = srv -} - -// MethodInfo contains the information of an RPC including its method name and type. -type MethodInfo struct { - // Name is the method name only, without the service name or package name. - Name string - // IsClientStream indicates whether the RPC is a client streaming RPC. - IsClientStream bool - // IsServerStream indicates whether the RPC is a server streaming RPC. - IsServerStream bool -} - -// ServiceInfo contains unary RPC method info, streaming RPC methid info and metadata for a service. -type ServiceInfo struct { - Methods []MethodInfo - // Metadata is the metadata specified in ServiceDesc when registering service. - Metadata interface{} -} - -// GetServiceInfo returns a map from service names to ServiceInfo. -// Service names include the package names, in the form of .. -func (s *Server) GetServiceInfo() map[string]ServiceInfo { - ret := make(map[string]ServiceInfo) - for n, srv := range s.m { - methods := make([]MethodInfo, 0, len(srv.md)+len(srv.sd)) - for m := range srv.md { - methods = append(methods, MethodInfo{ - Name: m, - IsClientStream: false, - IsServerStream: false, - }) - } - for m, d := range srv.sd { - methods = append(methods, MethodInfo{ - Name: m, - IsClientStream: d.ClientStreams, - IsServerStream: d.ServerStreams, - }) - } - - ret[n] = ServiceInfo{ - Methods: methods, - Metadata: srv.mdata, - } - } - return ret -} - -var ( - // ErrServerStopped indicates that the operation is now illegal because of - // the server being stopped. - ErrServerStopped = errors.New("grpc: the server has been stopped") -) - -func (s *Server) useTransportAuthenticator(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) { - if s.opts.creds == nil { - return rawConn, nil, nil - } - return s.opts.creds.ServerHandshake(rawConn) -} - -// Serve accepts incoming connections on the listener lis, creating a new -// ServerTransport and service goroutine for each. The service goroutines -// read gRPC requests and then call the registered handlers to reply to them. -// Service returns when lis.Accept fails. lis will be closed when -// this method returns. -func (s *Server) Serve(lis net.Listener) error { - s.mu.Lock() - s.printf("serving") - if s.lis == nil { - s.mu.Unlock() - lis.Close() - return ErrServerStopped - } - s.lis[lis] = true - s.mu.Unlock() - defer func() { - s.mu.Lock() - if s.lis != nil && s.lis[lis] { - lis.Close() - delete(s.lis, lis) - } - s.mu.Unlock() - }() - for { - rawConn, err := lis.Accept() - if err != nil { - s.mu.Lock() - s.printf("done serving; Accept = %v", err) - s.mu.Unlock() - return err - } - // Start a new goroutine to deal with rawConn - // so we don't stall this Accept loop goroutine. - go s.handleRawConn(rawConn) - } -} - -// handleRawConn is run in its own goroutine and handles a just-accepted -// connection that has not had any I/O performed on it yet. -func (s *Server) handleRawConn(rawConn net.Conn) { - conn, authInfo, err := s.useTransportAuthenticator(rawConn) - if err != nil { - s.mu.Lock() - s.errorf("ServerHandshake(%q) failed: %v", rawConn.RemoteAddr(), err) - s.mu.Unlock() - grpclog.Printf("grpc: Server.Serve failed to complete security handshake from %q: %v", rawConn.RemoteAddr(), err) - // If serverHandShake returns ErrConnDispatched, keep rawConn open. - if err != credentials.ErrConnDispatched { - rawConn.Close() - } - return - } - - s.mu.Lock() - if s.conns == nil { - s.mu.Unlock() - conn.Close() - return - } - s.mu.Unlock() - - if s.opts.useHandlerImpl { - s.serveUsingHandler(conn) - } else { - s.serveNewHTTP2Transport(conn, authInfo) - } -} - -// serveNewHTTP2Transport sets up a new http/2 transport (using the -// gRPC http2 server transport in transport/http2_server.go) and -// serves streams on it. -// This is run in its own goroutine (it does network I/O in -// transport.NewServerTransport). -func (s *Server) serveNewHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) { - st, err := transport.NewServerTransport("http2", c, s.opts.maxConcurrentStreams, authInfo) - if err != nil { - s.mu.Lock() - s.errorf("NewServerTransport(%q) failed: %v", c.RemoteAddr(), err) - s.mu.Unlock() - c.Close() - grpclog.Println("grpc: Server.Serve failed to create ServerTransport: ", err) - return - } - if !s.addConn(st) { - st.Close() - return - } - s.serveStreams(st) -} - -func (s *Server) serveStreams(st transport.ServerTransport) { - defer s.removeConn(st) - defer st.Close() - var wg sync.WaitGroup - st.HandleStreams(func(stream *transport.Stream) { - wg.Add(1) - go func() { - defer wg.Done() - s.handleStream(st, stream, s.traceInfo(st, stream)) - }() - }) - wg.Wait() -} - -var _ http.Handler = (*Server)(nil) - -// serveUsingHandler is called from handleRawConn when s is configured -// to handle requests via the http.Handler interface. It sets up a -// net/http.Server to handle the just-accepted conn. The http.Server -// is configured to route all incoming requests (all HTTP/2 streams) -// to ServeHTTP, which creates a new ServerTransport for each stream. -// serveUsingHandler blocks until conn closes. -// -// This codepath is only used when Server.TestingUseHandlerImpl has -// been configured. This lets the end2end tests exercise the ServeHTTP -// method as one of the environment types. -// -// conn is the *tls.Conn that's already been authenticated. -func (s *Server) serveUsingHandler(conn net.Conn) { - if !s.addConn(conn) { - conn.Close() - return - } - defer s.removeConn(conn) - h2s := &http2.Server{ - MaxConcurrentStreams: s.opts.maxConcurrentStreams, - } - h2s.ServeConn(conn, &http2.ServeConnOpts{ - Handler: s, - }) -} - -func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) { - st, err := transport.NewServerHandlerTransport(w, r) - if err != nil { - http.Error(w, err.Error(), http.StatusInternalServerError) - return - } - if !s.addConn(st) { - st.Close() - return - } - defer s.removeConn(st) - s.serveStreams(st) -} - -// traceInfo returns a traceInfo and associates it with stream, if tracing is enabled. -// If tracing is not enabled, it returns nil. -func (s *Server) traceInfo(st transport.ServerTransport, stream *transport.Stream) (trInfo *traceInfo) { - if !EnableTracing { - return nil - } - trInfo = &traceInfo{ - tr: trace.New("grpc.Recv."+methodFamily(stream.Method()), stream.Method()), - } - trInfo.firstLine.client = false - trInfo.firstLine.remoteAddr = st.RemoteAddr() - stream.TraceContext(trInfo.tr) - if dl, ok := stream.Context().Deadline(); ok { - trInfo.firstLine.deadline = dl.Sub(time.Now()) - } - return trInfo -} - -func (s *Server) addConn(c io.Closer) bool { - s.mu.Lock() - defer s.mu.Unlock() - if s.conns == nil || s.drain { - return false - } - s.conns[c] = true - return true -} - -func (s *Server) removeConn(c io.Closer) { - s.mu.Lock() - defer s.mu.Unlock() - if s.conns != nil { - delete(s.conns, c) - s.cv.Signal() - } -} - -func (s *Server) sendResponse(t transport.ServerTransport, stream *transport.Stream, msg interface{}, cp Compressor, opts *transport.Options) error { - var cbuf *bytes.Buffer - if cp != nil { - cbuf = new(bytes.Buffer) - } - p, err := encode(s.opts.codec, msg, cp, cbuf) - if err != nil { - // This typically indicates a fatal issue (e.g., memory - // corruption or hardware faults) the application program - // cannot handle. - // - // TODO(zhaoq): There exist other options also such as only closing the - // faulty stream locally and remotely (Other streams can keep going). Find - // the optimal option. - grpclog.Fatalf("grpc: Server failed to encode response %v", err) - } - return t.Write(stream, p, opts) -} - -func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.Stream, srv *service, md *MethodDesc, trInfo *traceInfo) (err error) { - if trInfo != nil { - defer trInfo.tr.Finish() - trInfo.firstLine.client = false - trInfo.tr.LazyLog(&trInfo.firstLine, false) - defer func() { - if err != nil && err != io.EOF { - trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - trInfo.tr.SetError() - } - }() - } - if s.opts.cp != nil { - // NOTE: this needs to be ahead of all handling, https://github.com/grpc/grpc-go/issues/686. - stream.SetSendCompress(s.opts.cp.Type()) - } - p := &parser{r: stream} - for { - pf, req, err := p.recvMsg(s.opts.maxMsgSize) - if err == io.EOF { - // The entire stream is done (for unary RPC only). - return err - } - if err == io.ErrUnexpectedEOF { - err = transport.StreamError{Code: codes.Internal, Desc: "io.ErrUnexpectedEOF"} - } - if err != nil { - switch err := err.(type) { - case *rpcError: - if err := t.WriteStatus(stream, err.code, err.desc); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", err) - } - case transport.ConnectionError: - // Nothing to do here. - case transport.StreamError: - if err := t.WriteStatus(stream, err.Code, err.Desc); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", err) - } - default: - panic(fmt.Sprintf("grpc: Unexpected error (%T) from recvMsg: %v", err, err)) - } - return err - } - - if err := checkRecvPayload(pf, stream.RecvCompress(), s.opts.dc); err != nil { - switch err := err.(type) { - case transport.StreamError: - if err := t.WriteStatus(stream, err.Code, err.Desc); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", err) - } - default: - if err := t.WriteStatus(stream, codes.Internal, err.Error()); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", err) - } - - } - return err - } - statusCode := codes.OK - statusDesc := "" - df := func(v interface{}) error { - if pf == compressionMade { - var err error - req, err = s.opts.dc.Do(bytes.NewReader(req)) - if err != nil { - if err := t.WriteStatus(stream, codes.Internal, err.Error()); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", err) - } - return err - } - } - if len(req) > s.opts.maxMsgSize { - // TODO: Revisit the error code. Currently keep it consistent with - // java implementation. - statusCode = codes.Internal - statusDesc = fmt.Sprintf("grpc: server received a message of %d bytes exceeding %d limit", len(req), s.opts.maxMsgSize) - } - if err := s.opts.codec.Unmarshal(req, v); err != nil { - return err - } - if trInfo != nil { - trInfo.tr.LazyLog(&payload{sent: false, msg: v}, true) - } - return nil - } - reply, appErr := md.Handler(srv.server, stream.Context(), df, s.opts.unaryInt) - if appErr != nil { - if err, ok := appErr.(*rpcError); ok { - statusCode = err.code - statusDesc = err.desc - } else { - statusCode = convertCode(appErr) - statusDesc = appErr.Error() - } - if trInfo != nil && statusCode != codes.OK { - trInfo.tr.LazyLog(stringer(statusDesc), true) - trInfo.tr.SetError() - } - if err := t.WriteStatus(stream, statusCode, statusDesc); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status: %v", err) - return err - } - return nil - } - if trInfo != nil { - trInfo.tr.LazyLog(stringer("OK"), false) - } - opts := &transport.Options{ - Last: true, - Delay: false, - } - if err := s.sendResponse(t, stream, reply, s.opts.cp, opts); err != nil { - switch err := err.(type) { - case transport.ConnectionError: - // Nothing to do here. - case transport.StreamError: - statusCode = err.Code - statusDesc = err.Desc - default: - statusCode = codes.Unknown - statusDesc = err.Error() - } - return err - } - if trInfo != nil { - trInfo.tr.LazyLog(&payload{sent: true, msg: reply}, true) - } - return t.WriteStatus(stream, statusCode, statusDesc) - } -} - -func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transport.Stream, srv *service, sd *StreamDesc, trInfo *traceInfo) (err error) { - if s.opts.cp != nil { - stream.SetSendCompress(s.opts.cp.Type()) - } - ss := &serverStream{ - t: t, - s: stream, - p: &parser{r: stream}, - codec: s.opts.codec, - cp: s.opts.cp, - dc: s.opts.dc, - maxMsgSize: s.opts.maxMsgSize, - trInfo: trInfo, - } - if ss.cp != nil { - ss.cbuf = new(bytes.Buffer) - } - if trInfo != nil { - trInfo.tr.LazyLog(&trInfo.firstLine, false) - defer func() { - ss.mu.Lock() - if err != nil && err != io.EOF { - ss.trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - ss.trInfo.tr.SetError() - } - ss.trInfo.tr.Finish() - ss.trInfo.tr = nil - ss.mu.Unlock() - }() - } - var appErr error - if s.opts.streamInt == nil { - appErr = sd.Handler(srv.server, ss) - } else { - info := &StreamServerInfo{ - FullMethod: stream.Method(), - IsClientStream: sd.ClientStreams, - IsServerStream: sd.ServerStreams, - } - appErr = s.opts.streamInt(srv.server, ss, info, sd.Handler) - } - if appErr != nil { - if err, ok := appErr.(*rpcError); ok { - ss.statusCode = err.code - ss.statusDesc = err.desc - } else if err, ok := appErr.(transport.StreamError); ok { - ss.statusCode = err.Code - ss.statusDesc = err.Desc - } else { - ss.statusCode = convertCode(appErr) - ss.statusDesc = appErr.Error() - } - } - if trInfo != nil { - ss.mu.Lock() - if ss.statusCode != codes.OK { - ss.trInfo.tr.LazyLog(stringer(ss.statusDesc), true) - ss.trInfo.tr.SetError() - } else { - ss.trInfo.tr.LazyLog(stringer("OK"), false) - } - ss.mu.Unlock() - } - return t.WriteStatus(ss.s, ss.statusCode, ss.statusDesc) - -} - -func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Stream, trInfo *traceInfo) { - sm := stream.Method() - if sm != "" && sm[0] == '/' { - sm = sm[1:] - } - pos := strings.LastIndex(sm, "/") - if pos == -1 { - if trInfo != nil { - trInfo.tr.LazyLog(&fmtStringer{"Malformed method name %q", []interface{}{sm}}, true) - trInfo.tr.SetError() - } - if err := t.WriteStatus(stream, codes.InvalidArgument, fmt.Sprintf("malformed method name: %q", stream.Method())); err != nil { - if trInfo != nil { - trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - trInfo.tr.SetError() - } - grpclog.Printf("grpc: Server.handleStream failed to write status: %v", err) - } - if trInfo != nil { - trInfo.tr.Finish() - } - return - } - service := sm[:pos] - method := sm[pos+1:] - srv, ok := s.m[service] - if !ok { - if trInfo != nil { - trInfo.tr.LazyLog(&fmtStringer{"Unknown service %v", []interface{}{service}}, true) - trInfo.tr.SetError() - } - if err := t.WriteStatus(stream, codes.Unimplemented, fmt.Sprintf("unknown service %v", service)); err != nil { - if trInfo != nil { - trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - trInfo.tr.SetError() - } - grpclog.Printf("grpc: Server.handleStream failed to write status: %v", err) - } - if trInfo != nil { - trInfo.tr.Finish() - } - return - } - // Unary RPC or Streaming RPC? - if md, ok := srv.md[method]; ok { - s.processUnaryRPC(t, stream, srv, md, trInfo) - return - } - if sd, ok := srv.sd[method]; ok { - s.processStreamingRPC(t, stream, srv, sd, trInfo) - return - } - if trInfo != nil { - trInfo.tr.LazyLog(&fmtStringer{"Unknown method %v", []interface{}{method}}, true) - trInfo.tr.SetError() - } - if err := t.WriteStatus(stream, codes.Unimplemented, fmt.Sprintf("unknown method %v", method)); err != nil { - if trInfo != nil { - trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - trInfo.tr.SetError() - } - grpclog.Printf("grpc: Server.handleStream failed to write status: %v", err) - } - if trInfo != nil { - trInfo.tr.Finish() - } -} - -// Stop stops the gRPC server. It immediately closes all open -// connections and listeners. -// It cancels all active RPCs on the server side and the corresponding -// pending RPCs on the client side will get notified by connection -// errors. -func (s *Server) Stop() { - s.mu.Lock() - listeners := s.lis - s.lis = nil - st := s.conns - s.conns = nil - // interrupt GracefulStop if Stop and GracefulStop are called concurrently. - s.cv.Signal() - s.mu.Unlock() - - for lis := range listeners { - lis.Close() - } - for c := range st { - c.Close() - } - - s.mu.Lock() - if s.events != nil { - s.events.Finish() - s.events = nil - } - s.mu.Unlock() -} - -// GracefulStop stops the gRPC server gracefully. It stops the server to accept new -// connections and RPCs and blocks until all the pending RPCs are finished. -func (s *Server) GracefulStop() { - s.mu.Lock() - defer s.mu.Unlock() - if s.drain == true || s.conns == nil { - return - } - s.drain = true - for lis := range s.lis { - lis.Close() - } - s.lis = nil - for c := range s.conns { - c.(transport.ServerTransport).Drain() - } - for len(s.conns) != 0 { - s.cv.Wait() - } - s.conns = nil - if s.events != nil { - s.events.Finish() - s.events = nil - } -} - -func init() { - internal.TestingCloseConns = func(arg interface{}) { - arg.(*Server).testingCloseConns() - } - internal.TestingUseHandlerImpl = func(arg interface{}) { - arg.(*Server).opts.useHandlerImpl = true - } -} - -// testingCloseConns closes all existing transports but keeps s.lis -// accepting new connections. -func (s *Server) testingCloseConns() { - s.mu.Lock() - for c := range s.conns { - c.Close() - delete(s.conns, c) - } - s.mu.Unlock() -} - -// SendHeader sends header metadata. It may be called at most once from a unary -// RPC handler. The ctx is the RPC handler's Context or one derived from it. -func SendHeader(ctx context.Context, md metadata.MD) error { - if md.Len() == 0 { - return nil - } - stream, ok := transport.StreamFromContext(ctx) - if !ok { - return fmt.Errorf("grpc: failed to fetch the stream from the context %v", ctx) - } - t := stream.ServerTransport() - if t == nil { - grpclog.Fatalf("grpc: SendHeader: %v has no ServerTransport to send header metadata.", stream) - } - return t.WriteHeader(stream, md) -} - -// SetTrailer sets the trailer metadata that will be sent when an RPC returns. -// It may be called at most once from a unary RPC handler. The ctx is the RPC -// handler's Context or one derived from it. -func SetTrailer(ctx context.Context, md metadata.MD) error { - if md.Len() == 0 { - return nil - } - stream, ok := transport.StreamFromContext(ctx) - if !ok { - return fmt.Errorf("grpc: failed to fetch the stream from the context %v", ctx) - } - return stream.SetTrailer(md) -} diff --git a/vendor/google.golang.org/grpc/stream.go b/vendor/google.golang.org/grpc/stream.go deleted file mode 100644 index 51df3f01da..0000000000 --- a/vendor/google.golang.org/grpc/stream.go +++ /dev/null @@ -1,493 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "bytes" - "errors" - "io" - "math" - "sync" - "time" - - "golang.org/x/net/context" - "golang.org/x/net/trace" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/transport" -) - -// StreamHandler defines the handler called by gRPC server to complete the -// execution of a streaming RPC. -type StreamHandler func(srv interface{}, stream ServerStream) error - -// StreamDesc represents a streaming RPC service's method specification. -type StreamDesc struct { - StreamName string - Handler StreamHandler - - // At least one of these is true. - ServerStreams bool - ClientStreams bool -} - -// Stream defines the common interface a client or server stream has to satisfy. -type Stream interface { - // Context returns the context for this stream. - Context() context.Context - // SendMsg blocks until it sends m, the stream is done or the stream - // breaks. - // On error, it aborts the stream and returns an RPC status on client - // side. On server side, it simply returns the error to the caller. - // SendMsg is called by generated code. Also Users can call SendMsg - // directly when it is really needed in their use cases. - SendMsg(m interface{}) error - // RecvMsg blocks until it receives a message or the stream is - // done. On client side, it returns io.EOF when the stream is done. On - // any other error, it aborts the stream and returns an RPC status. On - // server side, it simply returns the error to the caller. - RecvMsg(m interface{}) error -} - -// ClientStream defines the interface a client stream has to satisfy. -type ClientStream interface { - // Header returns the header metadata received from the server if there - // is any. It blocks if the metadata is not ready to read. - Header() (metadata.MD, error) - // Trailer returns the trailer metadata from the server, if there is any. - // It must only be called after stream.CloseAndRecv has returned, or - // stream.Recv has returned a non-nil error (including io.EOF). - Trailer() metadata.MD - // CloseSend closes the send direction of the stream. It closes the stream - // when non-nil error is met. - CloseSend() error - Stream -} - -// NewClientStream creates a new Stream for the client side. This is called -// by generated code. -func NewClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (_ ClientStream, err error) { - var ( - t transport.ClientTransport - s *transport.Stream - put func() - ) - c := defaultCallInfo - for _, o := range opts { - if err := o.before(&c); err != nil { - return nil, toRPCErr(err) - } - } - callHdr := &transport.CallHdr{ - Host: cc.authority, - Method: method, - Flush: desc.ServerStreams && desc.ClientStreams, - } - if cc.dopts.cp != nil { - callHdr.SendCompress = cc.dopts.cp.Type() - } - var trInfo traceInfo - if EnableTracing { - trInfo.tr = trace.New("grpc.Sent."+methodFamily(method), method) - trInfo.firstLine.client = true - if deadline, ok := ctx.Deadline(); ok { - trInfo.firstLine.deadline = deadline.Sub(time.Now()) - } - trInfo.tr.LazyLog(&trInfo.firstLine, false) - ctx = trace.NewContext(ctx, trInfo.tr) - defer func() { - if err != nil { - // Need to call tr.finish() if error is returned. - // Because tr will not be returned to caller. - trInfo.tr.LazyPrintf("RPC: [%v]", err) - trInfo.tr.SetError() - trInfo.tr.Finish() - } - }() - } - gopts := BalancerGetOptions{ - BlockingWait: !c.failFast, - } - for { - t, put, err = cc.getTransport(ctx, gopts) - if err != nil { - // TODO(zhaoq): Probably revisit the error handling. - if _, ok := err.(*rpcError); ok { - return nil, err - } - if err == errConnClosing || err == errConnUnavailable { - if c.failFast { - return nil, Errorf(codes.Unavailable, "%v", err) - } - continue - } - // All the other errors are treated as Internal errors. - return nil, Errorf(codes.Internal, "%v", err) - } - - s, err = t.NewStream(ctx, callHdr) - if err != nil { - if put != nil { - put() - put = nil - } - if _, ok := err.(transport.ConnectionError); ok || err == transport.ErrStreamDrain { - if c.failFast { - return nil, toRPCErr(err) - } - continue - } - return nil, toRPCErr(err) - } - break - } - cs := &clientStream{ - opts: opts, - c: c, - desc: desc, - codec: cc.dopts.codec, - cp: cc.dopts.cp, - dc: cc.dopts.dc, - - put: put, - t: t, - s: s, - p: &parser{r: s}, - - tracing: EnableTracing, - trInfo: trInfo, - } - if cc.dopts.cp != nil { - cs.cbuf = new(bytes.Buffer) - } - // Listen on ctx.Done() to detect cancellation and s.Done() to detect normal termination - // when there is no pending I/O operations on this stream. - go func() { - select { - case <-t.Error(): - // Incur transport error, simply exit. - case <-s.Done(): - // TODO: The trace of the RPC is terminated here when there is no pending - // I/O, which is probably not the optimal solution. - if s.StatusCode() == codes.OK { - cs.finish(nil) - } else { - cs.finish(Errorf(s.StatusCode(), "%s", s.StatusDesc())) - } - cs.closeTransportStream(nil) - case <-s.GoAway(): - cs.finish(errConnDrain) - cs.closeTransportStream(errConnDrain) - case <-s.Context().Done(): - err := s.Context().Err() - cs.finish(err) - cs.closeTransportStream(transport.ContextErr(err)) - } - }() - return cs, nil -} - -// clientStream implements a client side Stream. -type clientStream struct { - opts []CallOption - c callInfo - t transport.ClientTransport - s *transport.Stream - p *parser - desc *StreamDesc - codec Codec - cp Compressor - cbuf *bytes.Buffer - dc Decompressor - - tracing bool // set to EnableTracing when the clientStream is created. - - mu sync.Mutex - put func() - closed bool - // trInfo.tr is set when the clientStream is created (if EnableTracing is true), - // and is set to nil when the clientStream's finish method is called. - trInfo traceInfo -} - -func (cs *clientStream) Context() context.Context { - return cs.s.Context() -} - -func (cs *clientStream) Header() (metadata.MD, error) { - m, err := cs.s.Header() - if err != nil { - if _, ok := err.(transport.ConnectionError); !ok { - cs.closeTransportStream(err) - } - } - return m, err -} - -func (cs *clientStream) Trailer() metadata.MD { - return cs.s.Trailer() -} - -func (cs *clientStream) SendMsg(m interface{}) (err error) { - if cs.tracing { - cs.mu.Lock() - if cs.trInfo.tr != nil { - cs.trInfo.tr.LazyLog(&payload{sent: true, msg: m}, true) - } - cs.mu.Unlock() - } - defer func() { - if err != nil { - cs.finish(err) - } - if err == nil { - return - } - if err == io.EOF { - // Specialize the process for server streaming. SendMesg is only called - // once when creating the stream object. io.EOF needs to be skipped when - // the rpc is early finished (before the stream object is created.). - // TODO: It is probably better to move this into the generated code. - if !cs.desc.ClientStreams && cs.desc.ServerStreams { - err = nil - } - return - } - if _, ok := err.(transport.ConnectionError); !ok { - cs.closeTransportStream(err) - } - err = toRPCErr(err) - }() - out, err := encode(cs.codec, m, cs.cp, cs.cbuf) - defer func() { - if cs.cbuf != nil { - cs.cbuf.Reset() - } - }() - if err != nil { - return transport.StreamErrorf(codes.Internal, "grpc: %v", err) - } - return cs.t.Write(cs.s, out, &transport.Options{Last: false}) -} - -func (cs *clientStream) RecvMsg(m interface{}) (err error) { - err = recv(cs.p, cs.codec, cs.s, cs.dc, m, math.MaxInt32) - defer func() { - // err != nil indicates the termination of the stream. - if err != nil { - cs.finish(err) - } - }() - if err == nil { - if cs.tracing { - cs.mu.Lock() - if cs.trInfo.tr != nil { - cs.trInfo.tr.LazyLog(&payload{sent: false, msg: m}, true) - } - cs.mu.Unlock() - } - if !cs.desc.ClientStreams || cs.desc.ServerStreams { - return - } - // Special handling for client streaming rpc. - err = recv(cs.p, cs.codec, cs.s, cs.dc, m, math.MaxInt32) - cs.closeTransportStream(err) - if err == nil { - return toRPCErr(errors.New("grpc: client streaming protocol violation: get , want ")) - } - if err == io.EOF { - if cs.s.StatusCode() == codes.OK { - cs.finish(err) - return nil - } - return Errorf(cs.s.StatusCode(), "%s", cs.s.StatusDesc()) - } - return toRPCErr(err) - } - if _, ok := err.(transport.ConnectionError); !ok { - cs.closeTransportStream(err) - } - if err == io.EOF { - if cs.s.StatusCode() == codes.OK { - // Returns io.EOF to indicate the end of the stream. - return - } - return Errorf(cs.s.StatusCode(), "%s", cs.s.StatusDesc()) - } - return toRPCErr(err) -} - -func (cs *clientStream) CloseSend() (err error) { - err = cs.t.Write(cs.s, nil, &transport.Options{Last: true}) - defer func() { - if err != nil { - cs.finish(err) - } - }() - if err == nil || err == io.EOF { - return nil - } - if _, ok := err.(transport.ConnectionError); !ok { - cs.closeTransportStream(err) - } - err = toRPCErr(err) - return -} - -func (cs *clientStream) closeTransportStream(err error) { - cs.mu.Lock() - if cs.closed { - cs.mu.Unlock() - return - } - cs.closed = true - cs.mu.Unlock() - cs.t.CloseStream(cs.s, err) -} - -func (cs *clientStream) finish(err error) { - cs.mu.Lock() - defer cs.mu.Unlock() - for _, o := range cs.opts { - o.after(&cs.c) - } - if cs.put != nil { - cs.put() - cs.put = nil - } - if !cs.tracing { - return - } - if cs.trInfo.tr != nil { - if err == nil || err == io.EOF { - cs.trInfo.tr.LazyPrintf("RPC: [OK]") - } else { - cs.trInfo.tr.LazyPrintf("RPC: [%v]", err) - cs.trInfo.tr.SetError() - } - cs.trInfo.tr.Finish() - cs.trInfo.tr = nil - } -} - -// ServerStream defines the interface a server stream has to satisfy. -type ServerStream interface { - // SendHeader sends the header metadata. It should not be called - // after SendProto. It fails if called multiple times or if - // called after SendProto. - SendHeader(metadata.MD) error - // SetTrailer sets the trailer metadata which will be sent with the - // RPC status. - SetTrailer(metadata.MD) - Stream -} - -// serverStream implements a server side Stream. -type serverStream struct { - t transport.ServerTransport - s *transport.Stream - p *parser - codec Codec - cp Compressor - dc Decompressor - cbuf *bytes.Buffer - maxMsgSize int - statusCode codes.Code - statusDesc string - trInfo *traceInfo - - mu sync.Mutex // protects trInfo.tr after the service handler runs. -} - -func (ss *serverStream) Context() context.Context { - return ss.s.Context() -} - -func (ss *serverStream) SendHeader(md metadata.MD) error { - return ss.t.WriteHeader(ss.s, md) -} - -func (ss *serverStream) SetTrailer(md metadata.MD) { - if md.Len() == 0 { - return - } - ss.s.SetTrailer(md) - return -} - -func (ss *serverStream) SendMsg(m interface{}) (err error) { - defer func() { - if ss.trInfo != nil { - ss.mu.Lock() - if ss.trInfo.tr != nil { - if err == nil { - ss.trInfo.tr.LazyLog(&payload{sent: true, msg: m}, true) - } else { - ss.trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - ss.trInfo.tr.SetError() - } - } - ss.mu.Unlock() - } - }() - out, err := encode(ss.codec, m, ss.cp, ss.cbuf) - defer func() { - if ss.cbuf != nil { - ss.cbuf.Reset() - } - }() - if err != nil { - err = transport.StreamErrorf(codes.Internal, "grpc: %v", err) - return err - } - return ss.t.Write(ss.s, out, &transport.Options{Last: false}) -} - -func (ss *serverStream) RecvMsg(m interface{}) (err error) { - defer func() { - if ss.trInfo != nil { - ss.mu.Lock() - if ss.trInfo.tr != nil { - if err == nil { - ss.trInfo.tr.LazyLog(&payload{sent: false, msg: m}, true) - } else if err != io.EOF { - ss.trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) - ss.trInfo.tr.SetError() - } - } - ss.mu.Unlock() - } - }() - return recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxMsgSize) -} diff --git a/vendor/google.golang.org/grpc/trace.go b/vendor/google.golang.org/grpc/trace.go deleted file mode 100644 index f6747e1dfa..0000000000 --- a/vendor/google.golang.org/grpc/trace.go +++ /dev/null @@ -1,119 +0,0 @@ -/* - * - * Copyright 2015, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package grpc - -import ( - "bytes" - "fmt" - "io" - "net" - "strings" - "time" - - "golang.org/x/net/trace" -) - -// EnableTracing controls whether to trace RPCs using the golang.org/x/net/trace package. -// This should only be set before any RPCs are sent or received by this program. -var EnableTracing = true - -// methodFamily returns the trace family for the given method. -// It turns "/pkg.Service/GetFoo" into "pkg.Service". -func methodFamily(m string) string { - m = strings.TrimPrefix(m, "/") // remove leading slash - if i := strings.Index(m, "/"); i >= 0 { - m = m[:i] // remove everything from second slash - } - if i := strings.LastIndex(m, "."); i >= 0 { - m = m[i+1:] // cut down to last dotted component - } - return m -} - -// traceInfo contains tracing information for an RPC. -type traceInfo struct { - tr trace.Trace - firstLine firstLine -} - -// firstLine is the first line of an RPC trace. -type firstLine struct { - client bool // whether this is a client (outgoing) RPC - remoteAddr net.Addr - deadline time.Duration // may be zero -} - -func (f *firstLine) String() string { - var line bytes.Buffer - io.WriteString(&line, "RPC: ") - if f.client { - io.WriteString(&line, "to") - } else { - io.WriteString(&line, "from") - } - fmt.Fprintf(&line, " %v deadline:", f.remoteAddr) - if f.deadline != 0 { - fmt.Fprint(&line, f.deadline) - } else { - io.WriteString(&line, "none") - } - return line.String() -} - -// payload represents an RPC request or response payload. -type payload struct { - sent bool // whether this is an outgoing payload - msg interface{} // e.g. a proto.Message - // TODO(dsymonds): add stringifying info to codec, and limit how much we hold here? -} - -func (p payload) String() string { - if p.sent { - return fmt.Sprintf("sent: %v", p.msg) - } - return fmt.Sprintf("recv: %v", p.msg) -} - -type fmtStringer struct { - format string - a []interface{} -} - -func (f *fmtStringer) String() string { - return fmt.Sprintf(f.format, f.a...) -} - -type stringer string - -func (s stringer) String() string { return string(s) } diff --git a/vendor/google.golang.org/grpc/transport/control.go b/vendor/google.golang.org/grpc/transport/control.go deleted file mode 100644 index 4ef0830b56..0000000000 --- a/vendor/google.golang.org/grpc/transport/control.go +++ /dev/null @@ -1,215 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "fmt" - "sync" - - "golang.org/x/net/http2" -) - -const ( - // The default value of flow control window size in HTTP2 spec. - defaultWindowSize = 65535 - // The initial window size for flow control. - initialWindowSize = defaultWindowSize // for an RPC - initialConnWindowSize = defaultWindowSize * 16 // for a connection -) - -// The following defines various control items which could flow through -// the control buffer of transport. They represent different aspects of -// control tasks, e.g., flow control, settings, streaming resetting, etc. -type windowUpdate struct { - streamID uint32 - increment uint32 -} - -func (*windowUpdate) item() {} - -type settings struct { - ack bool - ss []http2.Setting -} - -func (*settings) item() {} - -type resetStream struct { - streamID uint32 - code http2.ErrCode -} - -func (*resetStream) item() {} - -type goAway struct { -} - -func (*goAway) item() {} - -type flushIO struct { -} - -func (*flushIO) item() {} - -type ping struct { - ack bool - data [8]byte -} - -func (*ping) item() {} - -// quotaPool is a pool which accumulates the quota and sends it to acquire() -// when it is available. -type quotaPool struct { - c chan int - - mu sync.Mutex - quota int -} - -// newQuotaPool creates a quotaPool which has quota q available to consume. -func newQuotaPool(q int) *quotaPool { - qb := "aPool{ - c: make(chan int, 1), - } - if q > 0 { - qb.c <- q - } else { - qb.quota = q - } - return qb -} - -// add adds n to the available quota and tries to send it on acquire. -func (qb *quotaPool) add(n int) { - qb.mu.Lock() - defer qb.mu.Unlock() - qb.quota += n - if qb.quota <= 0 { - return - } - select { - case qb.c <- qb.quota: - qb.quota = 0 - default: - } -} - -// cancel cancels the pending quota sent on acquire, if any. -func (qb *quotaPool) cancel() { - qb.mu.Lock() - defer qb.mu.Unlock() - select { - case n := <-qb.c: - qb.quota += n - default: - } -} - -// reset cancels the pending quota sent on acquired, incremented by v and sends -// it back on acquire. -func (qb *quotaPool) reset(v int) { - qb.mu.Lock() - defer qb.mu.Unlock() - select { - case n := <-qb.c: - qb.quota += n - default: - } - qb.quota += v - if qb.quota <= 0 { - return - } - select { - case qb.c <- qb.quota: - qb.quota = 0 - default: - } -} - -// acquire returns the channel on which available quota amounts are sent. -func (qb *quotaPool) acquire() <-chan int { - return qb.c -} - -// inFlow deals with inbound flow control -type inFlow struct { - // The inbound flow control limit for pending data. - limit uint32 - - mu sync.Mutex - // pendingData is the overall data which have been received but not been - // consumed by applications. - pendingData uint32 - // The amount of data the application has consumed but grpc has not sent - // window update for them. Used to reduce window update frequency. - pendingUpdate uint32 -} - -// onData is invoked when some data frame is received. It updates pendingData. -func (f *inFlow) onData(n uint32) error { - f.mu.Lock() - defer f.mu.Unlock() - f.pendingData += n - if f.pendingData+f.pendingUpdate > f.limit { - return fmt.Errorf("received %d-bytes data exceeding the limit %d bytes", f.pendingData+f.pendingUpdate, f.limit) - } - return nil -} - -// onRead is invoked when the application reads the data. It returns the window size -// to be sent to the peer. -func (f *inFlow) onRead(n uint32) uint32 { - f.mu.Lock() - defer f.mu.Unlock() - if f.pendingData == 0 { - return 0 - } - f.pendingData -= n - f.pendingUpdate += n - if f.pendingUpdate >= f.limit/4 { - wu := f.pendingUpdate - f.pendingUpdate = 0 - return wu - } - return 0 -} - -func (f *inFlow) resetPendingData() uint32 { - f.mu.Lock() - defer f.mu.Unlock() - n := f.pendingData - f.pendingData = 0 - return n -} diff --git a/vendor/google.golang.org/grpc/transport/go16.go b/vendor/google.golang.org/grpc/transport/go16.go deleted file mode 100644 index ee1c46bad5..0000000000 --- a/vendor/google.golang.org/grpc/transport/go16.go +++ /dev/null @@ -1,46 +0,0 @@ -// +build go1.6,!go1.7 - -/* - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "net" - - "golang.org/x/net/context" -) - -// dialContext connects to the address on the named network. -func dialContext(ctx context.Context, network, address string) (net.Conn, error) { - return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address) -} diff --git a/vendor/google.golang.org/grpc/transport/go17.go b/vendor/google.golang.org/grpc/transport/go17.go deleted file mode 100644 index 356f13ff19..0000000000 --- a/vendor/google.golang.org/grpc/transport/go17.go +++ /dev/null @@ -1,46 +0,0 @@ -// +build go1.7 - -/* - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "net" - - "golang.org/x/net/context" -) - -// dialContext connects to the address on the named network. -func dialContext(ctx context.Context, network, address string) (net.Conn, error) { - return (&net.Dialer{}).DialContext(ctx, network, address) -} diff --git a/vendor/google.golang.org/grpc/transport/handler_server.go b/vendor/google.golang.org/grpc/transport/handler_server.go deleted file mode 100644 index f23b2daff5..0000000000 --- a/vendor/google.golang.org/grpc/transport/handler_server.go +++ /dev/null @@ -1,397 +0,0 @@ -/* - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -// This file is the implementation of a gRPC server using HTTP/2 which -// uses the standard Go http2 Server implementation (via the -// http.Handler interface), rather than speaking low-level HTTP/2 -// frames itself. It is the implementation of *grpc.Server.ServeHTTP. - -package transport - -import ( - "errors" - "fmt" - "io" - "net" - "net/http" - "strings" - "sync" - "time" - - "golang.org/x/net/context" - "golang.org/x/net/http2" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/credentials" - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/peer" -) - -// NewServerHandlerTransport returns a ServerTransport handling gRPC -// from inside an http.Handler. It requires that the http Server -// supports HTTP/2. -func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request) (ServerTransport, error) { - if r.ProtoMajor != 2 { - return nil, errors.New("gRPC requires HTTP/2") - } - if r.Method != "POST" { - return nil, errors.New("invalid gRPC request method") - } - if !validContentType(r.Header.Get("Content-Type")) { - return nil, errors.New("invalid gRPC request content-type") - } - if _, ok := w.(http.Flusher); !ok { - return nil, errors.New("gRPC requires a ResponseWriter supporting http.Flusher") - } - if _, ok := w.(http.CloseNotifier); !ok { - return nil, errors.New("gRPC requires a ResponseWriter supporting http.CloseNotifier") - } - - st := &serverHandlerTransport{ - rw: w, - req: r, - closedCh: make(chan struct{}), - writes: make(chan func()), - } - - if v := r.Header.Get("grpc-timeout"); v != "" { - to, err := decodeTimeout(v) - if err != nil { - return nil, StreamErrorf(codes.Internal, "malformed time-out: %v", err) - } - st.timeoutSet = true - st.timeout = to - } - - var metakv []string - if r.Host != "" { - metakv = append(metakv, ":authority", r.Host) - } - for k, vv := range r.Header { - k = strings.ToLower(k) - if isReservedHeader(k) && !isWhitelistedPseudoHeader(k) { - continue - } - for _, v := range vv { - if k == "user-agent" { - // user-agent is special. Copying logic of http_util.go. - if i := strings.LastIndex(v, " "); i == -1 { - // There is no application user agent string being set - continue - } else { - v = v[:i] - } - } - metakv = append(metakv, k, v) - } - } - st.headerMD = metadata.Pairs(metakv...) - - return st, nil -} - -// serverHandlerTransport is an implementation of ServerTransport -// which replies to exactly one gRPC request (exactly one HTTP request), -// using the net/http.Handler interface. This http.Handler is guaranteed -// at this point to be speaking over HTTP/2, so it's able to speak valid -// gRPC. -type serverHandlerTransport struct { - rw http.ResponseWriter - req *http.Request - timeoutSet bool - timeout time.Duration - didCommonHeaders bool - - headerMD metadata.MD - - closeOnce sync.Once - closedCh chan struct{} // closed on Close - - // writes is a channel of code to run serialized in the - // ServeHTTP (HandleStreams) goroutine. The channel is closed - // when WriteStatus is called. - writes chan func() -} - -func (ht *serverHandlerTransport) Close() error { - ht.closeOnce.Do(ht.closeCloseChanOnce) - return nil -} - -func (ht *serverHandlerTransport) closeCloseChanOnce() { close(ht.closedCh) } - -func (ht *serverHandlerTransport) RemoteAddr() net.Addr { return strAddr(ht.req.RemoteAddr) } - -// strAddr is a net.Addr backed by either a TCP "ip:port" string, or -// the empty string if unknown. -type strAddr string - -func (a strAddr) Network() string { - if a != "" { - // Per the documentation on net/http.Request.RemoteAddr, if this is - // set, it's set to the IP:port of the peer (hence, TCP): - // https://golang.org/pkg/net/http/#Request - // - // If we want to support Unix sockets later, we can - // add our own grpc-specific convention within the - // grpc codebase to set RemoteAddr to a different - // format, or probably better: we can attach it to the - // context and use that from serverHandlerTransport.RemoteAddr. - return "tcp" - } - return "" -} - -func (a strAddr) String() string { return string(a) } - -// do runs fn in the ServeHTTP goroutine. -func (ht *serverHandlerTransport) do(fn func()) error { - select { - case ht.writes <- fn: - return nil - case <-ht.closedCh: - return ErrConnClosing - } -} - -func (ht *serverHandlerTransport) WriteStatus(s *Stream, statusCode codes.Code, statusDesc string) error { - err := ht.do(func() { - ht.writeCommonHeaders(s) - - // And flush, in case no header or body has been sent yet. - // This forces a separation of headers and trailers if this is the - // first call (for example, in end2end tests's TestNoService). - ht.rw.(http.Flusher).Flush() - - h := ht.rw.Header() - h.Set("Grpc-Status", fmt.Sprintf("%d", statusCode)) - if statusDesc != "" { - h.Set("Grpc-Message", encodeGrpcMessage(statusDesc)) - } - if md := s.Trailer(); len(md) > 0 { - for k, vv := range md { - // Clients don't tolerate reading restricted headers after some non restricted ones were sent. - if isReservedHeader(k) { - continue - } - for _, v := range vv { - // http2 ResponseWriter mechanism to - // send undeclared Trailers after the - // headers have possibly been written. - h.Add(http2.TrailerPrefix+k, v) - } - } - } - }) - close(ht.writes) - return err -} - -// writeCommonHeaders sets common headers on the first write -// call (Write, WriteHeader, or WriteStatus). -func (ht *serverHandlerTransport) writeCommonHeaders(s *Stream) { - if ht.didCommonHeaders { - return - } - ht.didCommonHeaders = true - - h := ht.rw.Header() - h["Date"] = nil // suppress Date to make tests happy; TODO: restore - h.Set("Content-Type", "application/grpc") - - // Predeclare trailers we'll set later in WriteStatus (after the body). - // This is a SHOULD in the HTTP RFC, and the way you add (known) - // Trailers per the net/http.ResponseWriter contract. - // See https://golang.org/pkg/net/http/#ResponseWriter - // and https://golang.org/pkg/net/http/#example_ResponseWriter_trailers - h.Add("Trailer", "Grpc-Status") - h.Add("Trailer", "Grpc-Message") - - if s.sendCompress != "" { - h.Set("Grpc-Encoding", s.sendCompress) - } -} - -func (ht *serverHandlerTransport) Write(s *Stream, data []byte, opts *Options) error { - return ht.do(func() { - ht.writeCommonHeaders(s) - ht.rw.Write(data) - if !opts.Delay { - ht.rw.(http.Flusher).Flush() - } - }) -} - -func (ht *serverHandlerTransport) WriteHeader(s *Stream, md metadata.MD) error { - return ht.do(func() { - ht.writeCommonHeaders(s) - h := ht.rw.Header() - for k, vv := range md { - // Clients don't tolerate reading restricted headers after some non restricted ones were sent. - if isReservedHeader(k) { - continue - } - for _, v := range vv { - h.Add(k, v) - } - } - ht.rw.WriteHeader(200) - ht.rw.(http.Flusher).Flush() - }) -} - -func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream)) { - // With this transport type there will be exactly 1 stream: this HTTP request. - - var ctx context.Context - var cancel context.CancelFunc - if ht.timeoutSet { - ctx, cancel = context.WithTimeout(context.Background(), ht.timeout) - } else { - ctx, cancel = context.WithCancel(context.Background()) - } - - // requestOver is closed when either the request's context is done - // or the status has been written via WriteStatus. - requestOver := make(chan struct{}) - - // clientGone receives a single value if peer is gone, either - // because the underlying connection is dead or because the - // peer sends an http2 RST_STREAM. - clientGone := ht.rw.(http.CloseNotifier).CloseNotify() - go func() { - select { - case <-requestOver: - return - case <-ht.closedCh: - case <-clientGone: - } - cancel() - }() - - req := ht.req - - s := &Stream{ - id: 0, // irrelevant - windowHandler: func(int) {}, // nothing - cancel: cancel, - buf: newRecvBuffer(), - st: ht, - method: req.URL.Path, - recvCompress: req.Header.Get("grpc-encoding"), - } - pr := &peer.Peer{ - Addr: ht.RemoteAddr(), - } - if req.TLS != nil { - pr.AuthInfo = credentials.TLSInfo{State: *req.TLS} - } - ctx = metadata.NewContext(ctx, ht.headerMD) - ctx = peer.NewContext(ctx, pr) - s.ctx = newContextWithStream(ctx, s) - s.dec = &recvBufferReader{ctx: s.ctx, recv: s.buf} - - // readerDone is closed when the Body.Read-ing goroutine exits. - readerDone := make(chan struct{}) - go func() { - defer close(readerDone) - - // TODO: minimize garbage, optimize recvBuffer code/ownership - const readSize = 8196 - for buf := make([]byte, readSize); ; { - n, err := req.Body.Read(buf) - if n > 0 { - s.buf.put(&recvMsg{data: buf[:n:n]}) - buf = buf[n:] - } - if err != nil { - s.buf.put(&recvMsg{err: mapRecvMsgError(err)}) - return - } - if len(buf) == 0 { - buf = make([]byte, readSize) - } - } - }() - - // startStream is provided by the *grpc.Server's serveStreams. - // It starts a goroutine serving s and exits immediately. - // The goroutine that is started is the one that then calls - // into ht, calling WriteHeader, Write, WriteStatus, Close, etc. - startStream(s) - - ht.runStream() - close(requestOver) - - // Wait for reading goroutine to finish. - req.Body.Close() - <-readerDone -} - -func (ht *serverHandlerTransport) runStream() { - for { - select { - case fn, ok := <-ht.writes: - if !ok { - return - } - fn() - case <-ht.closedCh: - return - } - } -} - -func (ht *serverHandlerTransport) Drain() { - panic("Drain() is not implemented") -} - -// mapRecvMsgError returns the non-nil err into the appropriate -// error value as expected by callers of *grpc.parser.recvMsg. -// In particular, in can only be: -// * io.EOF -// * io.ErrUnexpectedEOF -// * of type transport.ConnectionError -// * of type transport.StreamError -func mapRecvMsgError(err error) error { - if err == io.EOF || err == io.ErrUnexpectedEOF { - return err - } - if se, ok := err.(http2.StreamError); ok { - if code, ok := http2ErrConvTab[se.Code]; ok { - return StreamError{ - Code: code, - Desc: se.Error(), - } - } - } - return ConnectionErrorf(true, err, err.Error()) -} diff --git a/vendor/google.golang.org/grpc/transport/http2_client.go b/vendor/google.golang.org/grpc/transport/http2_client.go deleted file mode 100644 index afbba45467..0000000000 --- a/vendor/google.golang.org/grpc/transport/http2_client.go +++ /dev/null @@ -1,1056 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "bytes" - "fmt" - "io" - "math" - "net" - "strings" - "sync" - "time" - - "golang.org/x/net/context" - "golang.org/x/net/http2" - "golang.org/x/net/http2/hpack" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/credentials" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/peer" -) - -// http2Client implements the ClientTransport interface with HTTP2. -type http2Client struct { - target string // server name/addr - userAgent string - conn net.Conn // underlying communication channel - authInfo credentials.AuthInfo // auth info about the connection - nextID uint32 // the next stream ID to be used - - // writableChan synchronizes write access to the transport. - // A writer acquires the write lock by sending a value on writableChan - // and releases it by receiving from writableChan. - writableChan chan int - // shutdownChan is closed when Close is called. - // Blocking operations should select on shutdownChan to avoid - // blocking forever after Close. - // TODO(zhaoq): Maybe have a channel context? - shutdownChan chan struct{} - // errorChan is closed to notify the I/O error to the caller. - errorChan chan struct{} - // goAway is closed to notify the upper layer (i.e., addrConn.transportMonitor) - // that the server sent GoAway on this transport. - goAway chan struct{} - - framer *framer - hBuf *bytes.Buffer // the buffer for HPACK encoding - hEnc *hpack.Encoder // HPACK encoder - - // controlBuf delivers all the control related tasks (e.g., window - // updates, reset streams, and various settings) to the controller. - controlBuf *recvBuffer - fc *inFlow - // sendQuotaPool provides flow control to outbound message. - sendQuotaPool *quotaPool - // streamsQuota limits the max number of concurrent streams. - streamsQuota *quotaPool - - // The scheme used: https if TLS is on, http otherwise. - scheme string - - creds []credentials.PerRPCCredentials - - mu sync.Mutex // guard the following variables - state transportState // the state of underlying connection - activeStreams map[uint32]*Stream - // The max number of concurrent streams - maxStreams int - // the per-stream outbound flow control window size set by the peer. - streamSendQuota uint32 - // goAwayID records the Last-Stream-ID in the GoAway frame from the server. - goAwayID uint32 - // prevGoAway ID records the Last-Stream-ID in the previous GOAway frame. - prevGoAwayID uint32 -} - -func dial(fn func(context.Context, string) (net.Conn, error), ctx context.Context, addr string) (net.Conn, error) { - if fn != nil { - return fn(ctx, addr) - } - return dialContext(ctx, "tcp", addr) -} - -func isTemporary(err error) bool { - switch err { - case io.EOF: - // Connection closures may be resolved upon retry, and are thus - // treated as temporary. - return true - case context.DeadlineExceeded: - // In Go 1.7, context.DeadlineExceeded implements Timeout(), and this - // special case is not needed. Until then, we need to keep this - // clause. - return true - } - - switch err := err.(type) { - case interface { - Temporary() bool - }: - return err.Temporary() - case interface { - Timeout() bool - }: - // Timeouts may be resolved upon retry, and are thus treated as - // temporary. - return err.Timeout() - } - return false -} - -// newHTTP2Client constructs a connected ClientTransport to addr based on HTTP2 -// and starts to receive messages on it. Non-nil error returns if construction -// fails. -func newHTTP2Client(ctx context.Context, addr string, opts ConnectOptions) (_ ClientTransport, err error) { - scheme := "http" - conn, err := dial(opts.Dialer, ctx, addr) - if err != nil { - return nil, ConnectionErrorf(true, err, "transport: %v", err) - } - // Any further errors will close the underlying connection - defer func(conn net.Conn) { - if err != nil { - conn.Close() - } - }(conn) - var authInfo credentials.AuthInfo - if creds := opts.TransportCredentials; creds != nil { - scheme = "https" - conn, authInfo, err = creds.ClientHandshake(ctx, addr, conn) - if err != nil { - // Credentials handshake errors are typically considered permanent - // to avoid retrying on e.g. bad certificates. - temp := isTemporary(err) - return nil, ConnectionErrorf(temp, err, "transport: %v", err) - } - } - ua := primaryUA - if opts.UserAgent != "" { - ua = opts.UserAgent + " " + ua - } - var buf bytes.Buffer - t := &http2Client{ - target: addr, - userAgent: ua, - conn: conn, - authInfo: authInfo, - // The client initiated stream id is odd starting from 1. - nextID: 1, - writableChan: make(chan int, 1), - shutdownChan: make(chan struct{}), - errorChan: make(chan struct{}), - goAway: make(chan struct{}), - framer: newFramer(conn), - hBuf: &buf, - hEnc: hpack.NewEncoder(&buf), - controlBuf: newRecvBuffer(), - fc: &inFlow{limit: initialConnWindowSize}, - sendQuotaPool: newQuotaPool(defaultWindowSize), - scheme: scheme, - state: reachable, - activeStreams: make(map[uint32]*Stream), - creds: opts.PerRPCCredentials, - maxStreams: math.MaxInt32, - streamSendQuota: defaultWindowSize, - } - // Start the reader goroutine for incoming message. Each transport has - // a dedicated goroutine which reads HTTP2 frame from network. Then it - // dispatches the frame to the corresponding stream entity. - go t.reader() - // Send connection preface to server. - n, err := t.conn.Write(clientPreface) - if err != nil { - t.Close() - return nil, ConnectionErrorf(true, err, "transport: %v", err) - } - if n != len(clientPreface) { - t.Close() - return nil, ConnectionErrorf(true, err, "transport: preface mismatch, wrote %d bytes; want %d", n, len(clientPreface)) - } - if initialWindowSize != defaultWindowSize { - err = t.framer.writeSettings(true, http2.Setting{ - ID: http2.SettingInitialWindowSize, - Val: uint32(initialWindowSize), - }) - } else { - err = t.framer.writeSettings(true) - } - if err != nil { - t.Close() - return nil, ConnectionErrorf(true, err, "transport: %v", err) - } - // Adjust the connection flow control window if needed. - if delta := uint32(initialConnWindowSize - defaultWindowSize); delta > 0 { - if err := t.framer.writeWindowUpdate(true, 0, delta); err != nil { - t.Close() - return nil, ConnectionErrorf(true, err, "transport: %v", err) - } - } - go t.controller() - t.writableChan <- 0 - return t, nil -} - -func (t *http2Client) newStream(ctx context.Context, callHdr *CallHdr) *Stream { - // TODO(zhaoq): Handle uint32 overflow of Stream.id. - s := &Stream{ - id: t.nextID, - done: make(chan struct{}), - goAway: make(chan struct{}), - method: callHdr.Method, - sendCompress: callHdr.SendCompress, - buf: newRecvBuffer(), - fc: &inFlow{limit: initialWindowSize}, - sendQuotaPool: newQuotaPool(int(t.streamSendQuota)), - headerChan: make(chan struct{}), - } - t.nextID += 2 - s.windowHandler = func(n int) { - t.updateWindow(s, uint32(n)) - } - // Make a stream be able to cancel the pending operations by itself. - s.ctx, s.cancel = context.WithCancel(ctx) - s.dec = &recvBufferReader{ - ctx: s.ctx, - goAway: s.goAway, - recv: s.buf, - } - return s -} - -// NewStream creates a stream and register it into the transport as "active" -// streams. -func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Stream, err error) { - // Record the timeout value on the context. - var timeout time.Duration - if dl, ok := ctx.Deadline(); ok { - timeout = dl.Sub(time.Now()) - } - select { - case <-ctx.Done(): - return nil, ContextErr(ctx.Err()) - default: - } - pr := &peer.Peer{ - Addr: t.conn.RemoteAddr(), - } - // Attach Auth info if there is any. - if t.authInfo != nil { - pr.AuthInfo = t.authInfo - } - ctx = peer.NewContext(ctx, pr) - authData := make(map[string]string) - for _, c := range t.creds { - // Construct URI required to get auth request metadata. - var port string - if pos := strings.LastIndex(t.target, ":"); pos != -1 { - // Omit port if it is the default one. - if t.target[pos+1:] != "443" { - port = ":" + t.target[pos+1:] - } - } - pos := strings.LastIndex(callHdr.Method, "/") - if pos == -1 { - return nil, StreamErrorf(codes.InvalidArgument, "transport: malformed method name: %q", callHdr.Method) - } - audience := "https://" + callHdr.Host + port + callHdr.Method[:pos] - data, err := c.GetRequestMetadata(ctx, audience) - if err != nil { - return nil, StreamErrorf(codes.InvalidArgument, "transport: %v", err) - } - for k, v := range data { - authData[k] = v - } - } - t.mu.Lock() - if t.activeStreams == nil { - t.mu.Unlock() - return nil, ErrConnClosing - } - if t.state == draining { - t.mu.Unlock() - return nil, ErrStreamDrain - } - if t.state != reachable { - t.mu.Unlock() - return nil, ErrConnClosing - } - checkStreamsQuota := t.streamsQuota != nil - t.mu.Unlock() - if checkStreamsQuota { - sq, err := wait(ctx, nil, nil, t.shutdownChan, t.streamsQuota.acquire()) - if err != nil { - return nil, err - } - // Returns the quota balance back. - if sq > 1 { - t.streamsQuota.add(sq - 1) - } - } - if _, err := wait(ctx, nil, nil, t.shutdownChan, t.writableChan); err != nil { - // Return the quota back now because there is no stream returned to the caller. - if _, ok := err.(StreamError); ok && checkStreamsQuota { - t.streamsQuota.add(1) - } - return nil, err - } - t.mu.Lock() - if t.state == draining { - t.mu.Unlock() - if checkStreamsQuota { - t.streamsQuota.add(1) - } - // Need to make t writable again so that the rpc in flight can still proceed. - t.writableChan <- 0 - return nil, ErrStreamDrain - } - if t.state != reachable { - t.mu.Unlock() - return nil, ErrConnClosing - } - s := t.newStream(ctx, callHdr) - t.activeStreams[s.id] = s - - // This stream is not counted when applySetings(...) initialize t.streamsQuota. - // Reset t.streamsQuota to the right value. - var reset bool - if !checkStreamsQuota && t.streamsQuota != nil { - reset = true - } - t.mu.Unlock() - if reset { - t.streamsQuota.reset(-1) - } - - // HPACK encodes various headers. Note that once WriteField(...) is - // called, the corresponding headers/continuation frame has to be sent - // because hpack.Encoder is stateful. - t.hBuf.Reset() - t.hEnc.WriteField(hpack.HeaderField{Name: ":method", Value: "POST"}) - t.hEnc.WriteField(hpack.HeaderField{Name: ":scheme", Value: t.scheme}) - t.hEnc.WriteField(hpack.HeaderField{Name: ":path", Value: callHdr.Method}) - t.hEnc.WriteField(hpack.HeaderField{Name: ":authority", Value: callHdr.Host}) - t.hEnc.WriteField(hpack.HeaderField{Name: "content-type", Value: "application/grpc"}) - t.hEnc.WriteField(hpack.HeaderField{Name: "user-agent", Value: t.userAgent}) - t.hEnc.WriteField(hpack.HeaderField{Name: "te", Value: "trailers"}) - - if callHdr.SendCompress != "" { - t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-encoding", Value: callHdr.SendCompress}) - } - if timeout > 0 { - t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-timeout", Value: encodeTimeout(timeout)}) - } - for k, v := range authData { - // Capital header names are illegal in HTTP/2. - k = strings.ToLower(k) - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: v}) - } - var ( - hasMD bool - endHeaders bool - ) - if md, ok := metadata.FromContext(ctx); ok { - hasMD = true - for k, v := range md { - // HTTP doesn't allow you to set pseudoheaders after non pseudoheaders were set. - if isReservedHeader(k) { - continue - } - for _, entry := range v { - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry}) - } - } - } - first := true - // Sends the headers in a single batch even when they span multiple frames. - for !endHeaders { - size := t.hBuf.Len() - if size > http2MaxFrameLen { - size = http2MaxFrameLen - } else { - endHeaders = true - } - var flush bool - if endHeaders && (hasMD || callHdr.Flush) { - flush = true - } - if first { - // Sends a HeadersFrame to server to start a new stream. - p := http2.HeadersFrameParam{ - StreamID: s.id, - BlockFragment: t.hBuf.Next(size), - EndStream: false, - EndHeaders: endHeaders, - } - // Do a force flush for the buffered frames iff it is the last headers frame - // and there is header metadata to be sent. Otherwise, there is flushing until - // the corresponding data frame is written. - err = t.framer.writeHeaders(flush, p) - first = false - } else { - // Sends Continuation frames for the leftover headers. - err = t.framer.writeContinuation(flush, s.id, endHeaders, t.hBuf.Next(size)) - } - if err != nil { - t.notifyError(err) - return nil, ConnectionErrorf(true, err, "transport: %v", err) - } - } - t.writableChan <- 0 - return s, nil -} - -// CloseStream clears the footprint of a stream when the stream is not needed any more. -// This must not be executed in reader's goroutine. -func (t *http2Client) CloseStream(s *Stream, err error) { - var updateStreams bool - t.mu.Lock() - if t.activeStreams == nil { - t.mu.Unlock() - return - } - if t.streamsQuota != nil { - updateStreams = true - } - delete(t.activeStreams, s.id) - if t.state == draining && len(t.activeStreams) == 0 { - // The transport is draining and s is the last live stream on t. - t.mu.Unlock() - t.Close() - return - } - t.mu.Unlock() - if updateStreams { - t.streamsQuota.add(1) - } - s.mu.Lock() - if q := s.fc.resetPendingData(); q > 0 { - if n := t.fc.onRead(q); n > 0 { - t.controlBuf.put(&windowUpdate{0, n}) - } - } - if s.state == streamDone { - s.mu.Unlock() - return - } - if !s.headerDone { - close(s.headerChan) - s.headerDone = true - } - s.state = streamDone - s.mu.Unlock() - if _, ok := err.(StreamError); ok { - t.controlBuf.put(&resetStream{s.id, http2.ErrCodeCancel}) - } -} - -// Close kicks off the shutdown process of the transport. This should be called -// only once on a transport. Once it is called, the transport should not be -// accessed any more. -func (t *http2Client) Close() (err error) { - t.mu.Lock() - if t.state == closing { - t.mu.Unlock() - return - } - if t.state == reachable || t.state == draining { - close(t.errorChan) - } - t.state = closing - t.mu.Unlock() - close(t.shutdownChan) - err = t.conn.Close() - t.mu.Lock() - streams := t.activeStreams - t.activeStreams = nil - t.mu.Unlock() - // Notify all active streams. - for _, s := range streams { - s.mu.Lock() - if !s.headerDone { - close(s.headerChan) - s.headerDone = true - } - s.mu.Unlock() - s.write(recvMsg{err: ErrConnClosing}) - } - return -} - -func (t *http2Client) GracefulClose() error { - t.mu.Lock() - switch t.state { - case unreachable: - // The server may close the connection concurrently. t is not available for - // any streams. Close it now. - t.mu.Unlock() - t.Close() - return nil - case closing: - t.mu.Unlock() - return nil - } - // Notify the streams which were initiated after the server sent GOAWAY. - select { - case <-t.goAway: - n := t.prevGoAwayID - if n == 0 && t.nextID > 1 { - n = t.nextID - 2 - } - m := t.goAwayID + 2 - if m == 2 { - m = 1 - } - for i := m; i <= n; i += 2 { - if s, ok := t.activeStreams[i]; ok { - close(s.goAway) - } - } - default: - } - if t.state == draining { - t.mu.Unlock() - return nil - } - t.state = draining - active := len(t.activeStreams) - t.mu.Unlock() - if active == 0 { - return t.Close() - } - return nil -} - -// Write formats the data into HTTP2 data frame(s) and sends it out. The caller -// should proceed only if Write returns nil. -// TODO(zhaoq): opts.Delay is ignored in this implementation. Support it later -// if it improves the performance. -func (t *http2Client) Write(s *Stream, data []byte, opts *Options) error { - r := bytes.NewBuffer(data) - for { - var p []byte - if r.Len() > 0 { - size := http2MaxFrameLen - s.sendQuotaPool.add(0) - // Wait until the stream has some quota to send the data. - sq, err := wait(s.ctx, s.done, s.goAway, t.shutdownChan, s.sendQuotaPool.acquire()) - if err != nil { - return err - } - t.sendQuotaPool.add(0) - // Wait until the transport has some quota to send the data. - tq, err := wait(s.ctx, s.done, s.goAway, t.shutdownChan, t.sendQuotaPool.acquire()) - if err != nil { - if _, ok := err.(StreamError); ok || err == io.EOF { - t.sendQuotaPool.cancel() - } - return err - } - if sq < size { - size = sq - } - if tq < size { - size = tq - } - p = r.Next(size) - ps := len(p) - if ps < sq { - // Overbooked stream quota. Return it back. - s.sendQuotaPool.add(sq - ps) - } - if ps < tq { - // Overbooked transport quota. Return it back. - t.sendQuotaPool.add(tq - ps) - } - } - var ( - endStream bool - forceFlush bool - ) - if opts.Last && r.Len() == 0 { - endStream = true - } - // Indicate there is a writer who is about to write a data frame. - t.framer.adjustNumWriters(1) - // Got some quota. Try to acquire writing privilege on the transport. - if _, err := wait(s.ctx, s.done, s.goAway, t.shutdownChan, t.writableChan); err != nil { - if _, ok := err.(StreamError); ok || err == io.EOF { - // Return the connection quota back. - t.sendQuotaPool.add(len(p)) - } - if t.framer.adjustNumWriters(-1) == 0 { - // This writer is the last one in this batch and has the - // responsibility to flush the buffered frames. It queues - // a flush request to controlBuf instead of flushing directly - // in order to avoid the race with other writing or flushing. - t.controlBuf.put(&flushIO{}) - } - return err - } - select { - case <-s.ctx.Done(): - t.sendQuotaPool.add(len(p)) - if t.framer.adjustNumWriters(-1) == 0 { - t.controlBuf.put(&flushIO{}) - } - t.writableChan <- 0 - return ContextErr(s.ctx.Err()) - default: - } - if r.Len() == 0 && t.framer.adjustNumWriters(0) == 1 { - // Do a force flush iff this is last frame for the entire gRPC message - // and the caller is the only writer at this moment. - forceFlush = true - } - // If WriteData fails, all the pending streams will be handled - // by http2Client.Close(). No explicit CloseStream() needs to be - // invoked. - if err := t.framer.writeData(forceFlush, s.id, endStream, p); err != nil { - t.notifyError(err) - return ConnectionErrorf(true, err, "transport: %v", err) - } - if t.framer.adjustNumWriters(-1) == 0 { - t.framer.flushWrite() - } - t.writableChan <- 0 - if r.Len() == 0 { - break - } - } - if !opts.Last { - return nil - } - s.mu.Lock() - if s.state != streamDone { - s.state = streamWriteDone - } - s.mu.Unlock() - return nil -} - -func (t *http2Client) getStream(f http2.Frame) (*Stream, bool) { - t.mu.Lock() - defer t.mu.Unlock() - s, ok := t.activeStreams[f.Header().StreamID] - return s, ok -} - -// updateWindow adjusts the inbound quota for the stream and the transport. -// Window updates will deliver to the controller for sending when -// the cumulative quota exceeds the corresponding threshold. -func (t *http2Client) updateWindow(s *Stream, n uint32) { - s.mu.Lock() - defer s.mu.Unlock() - if s.state == streamDone { - return - } - if w := t.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - if w := s.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{s.id, w}) - } -} - -func (t *http2Client) handleData(f *http2.DataFrame) { - size := len(f.Data()) - if err := t.fc.onData(uint32(size)); err != nil { - t.notifyError(ConnectionErrorf(true, err, "%v", err)) - return - } - // Select the right stream to dispatch. - s, ok := t.getStream(f) - if !ok { - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - return - } - if size > 0 { - s.mu.Lock() - if s.state == streamDone { - s.mu.Unlock() - // The stream has been closed. Release the corresponding quota. - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - return - } - if err := s.fc.onData(uint32(size)); err != nil { - s.state = streamDone - s.statusCode = codes.Internal - s.statusDesc = err.Error() - close(s.done) - s.mu.Unlock() - s.write(recvMsg{err: io.EOF}) - t.controlBuf.put(&resetStream{s.id, http2.ErrCodeFlowControl}) - return - } - s.mu.Unlock() - // TODO(bradfitz, zhaoq): A copy is required here because there is no - // guarantee f.Data() is consumed before the arrival of next frame. - // Can this copy be eliminated? - data := make([]byte, size) - copy(data, f.Data()) - s.write(recvMsg{data: data}) - } - // The server has closed the stream without sending trailers. Record that - // the read direction is closed, and set the status appropriately. - if f.FrameHeader.Flags.Has(http2.FlagDataEndStream) { - s.mu.Lock() - if s.state == streamDone { - s.mu.Unlock() - return - } - s.state = streamDone - s.statusCode = codes.Internal - s.statusDesc = "server closed the stream without sending trailers" - close(s.done) - s.mu.Unlock() - s.write(recvMsg{err: io.EOF}) - } -} - -func (t *http2Client) handleRSTStream(f *http2.RSTStreamFrame) { - s, ok := t.getStream(f) - if !ok { - return - } - s.mu.Lock() - if s.state == streamDone { - s.mu.Unlock() - return - } - s.state = streamDone - if !s.headerDone { - close(s.headerChan) - s.headerDone = true - } - s.statusCode, ok = http2ErrConvTab[http2.ErrCode(f.ErrCode)] - if !ok { - grpclog.Println("transport: http2Client.handleRSTStream found no mapped gRPC status for the received http2 error ", f.ErrCode) - s.statusCode = codes.Unknown - } - s.statusDesc = fmt.Sprintf("stream terminated by RST_STREAM with error code: %d", f.ErrCode) - close(s.done) - s.mu.Unlock() - s.write(recvMsg{err: io.EOF}) -} - -func (t *http2Client) handleSettings(f *http2.SettingsFrame) { - if f.IsAck() { - return - } - var ss []http2.Setting - f.ForeachSetting(func(s http2.Setting) error { - ss = append(ss, s) - return nil - }) - // The settings will be applied once the ack is sent. - t.controlBuf.put(&settings{ack: true, ss: ss}) -} - -func (t *http2Client) handlePing(f *http2.PingFrame) { - pingAck := &ping{ack: true} - copy(pingAck.data[:], f.Data[:]) - t.controlBuf.put(pingAck) -} - -func (t *http2Client) handleGoAway(f *http2.GoAwayFrame) { - t.mu.Lock() - if t.state == reachable || t.state == draining { - if f.LastStreamID > 0 && f.LastStreamID%2 != 1 { - t.mu.Unlock() - t.notifyError(ConnectionErrorf(true, nil, "received illegal http2 GOAWAY frame: stream ID %d is even", f.LastStreamID)) - return - } - select { - case <-t.goAway: - id := t.goAwayID - // t.goAway has been closed (i.e.,multiple GoAways). - if id < f.LastStreamID { - t.mu.Unlock() - t.notifyError(ConnectionErrorf(true, nil, "received illegal http2 GOAWAY frame: previously recv GOAWAY frame with LastStramID %d, currently recv %d", id, f.LastStreamID)) - return - } - t.prevGoAwayID = id - t.goAwayID = f.LastStreamID - t.mu.Unlock() - return - default: - } - t.goAwayID = f.LastStreamID - close(t.goAway) - } - t.mu.Unlock() -} - -func (t *http2Client) handleWindowUpdate(f *http2.WindowUpdateFrame) { - id := f.Header().StreamID - incr := f.Increment - if id == 0 { - t.sendQuotaPool.add(int(incr)) - return - } - if s, ok := t.getStream(f); ok { - s.sendQuotaPool.add(int(incr)) - } -} - -// operateHeaders takes action on the decoded headers. -func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { - s, ok := t.getStream(frame) - if !ok { - return - } - var state decodeState - for _, hf := range frame.Fields { - state.processHeaderField(hf) - } - if state.err != nil { - s.write(recvMsg{err: state.err}) - // Something wrong. Stops reading even when there is remaining. - return - } - - endStream := frame.StreamEnded() - - s.mu.Lock() - if !endStream { - s.recvCompress = state.encoding - } - if !s.headerDone { - if !endStream && len(state.mdata) > 0 { - s.header = state.mdata - } - close(s.headerChan) - s.headerDone = true - } - if !endStream || s.state == streamDone { - s.mu.Unlock() - return - } - - if len(state.mdata) > 0 { - s.trailer = state.mdata - } - s.statusCode = state.statusCode - s.statusDesc = state.statusDesc - close(s.done) - s.state = streamDone - s.mu.Unlock() - s.write(recvMsg{err: io.EOF}) -} - -func handleMalformedHTTP2(s *Stream, err error) { - s.mu.Lock() - if !s.headerDone { - close(s.headerChan) - s.headerDone = true - } - s.mu.Unlock() - s.write(recvMsg{err: err}) -} - -// reader runs as a separate goroutine in charge of reading data from network -// connection. -// -// TODO(zhaoq): currently one reader per transport. Investigate whether this is -// optimal. -// TODO(zhaoq): Check the validity of the incoming frame sequence. -func (t *http2Client) reader() { - // Check the validity of server preface. - frame, err := t.framer.readFrame() - if err != nil { - t.notifyError(err) - return - } - sf, ok := frame.(*http2.SettingsFrame) - if !ok { - t.notifyError(err) - return - } - t.handleSettings(sf) - - // loop to keep reading incoming messages on this transport. - for { - frame, err := t.framer.readFrame() - if err != nil { - // Abort an active stream if the http2.Framer returns a - // http2.StreamError. This can happen only if the server's response - // is malformed http2. - if se, ok := err.(http2.StreamError); ok { - t.mu.Lock() - s := t.activeStreams[se.StreamID] - t.mu.Unlock() - if s != nil { - // use error detail to provide better err message - handleMalformedHTTP2(s, StreamErrorf(http2ErrConvTab[se.Code], "%v", t.framer.errorDetail())) - } - continue - } else { - // Transport error. - t.notifyError(err) - return - } - } - switch frame := frame.(type) { - case *http2.MetaHeadersFrame: - t.operateHeaders(frame) - case *http2.DataFrame: - t.handleData(frame) - case *http2.RSTStreamFrame: - t.handleRSTStream(frame) - case *http2.SettingsFrame: - t.handleSettings(frame) - case *http2.PingFrame: - t.handlePing(frame) - case *http2.GoAwayFrame: - t.handleGoAway(frame) - case *http2.WindowUpdateFrame: - t.handleWindowUpdate(frame) - default: - grpclog.Printf("transport: http2Client.reader got unhandled frame type %v.", frame) - } - } -} - -func (t *http2Client) applySettings(ss []http2.Setting) { - for _, s := range ss { - switch s.ID { - case http2.SettingMaxConcurrentStreams: - // TODO(zhaoq): This is a hack to avoid significant refactoring of the - // code to deal with the unrealistic int32 overflow. Probably will try - // to find a better way to handle this later. - if s.Val > math.MaxInt32 { - s.Val = math.MaxInt32 - } - t.mu.Lock() - reset := t.streamsQuota != nil - if !reset { - t.streamsQuota = newQuotaPool(int(s.Val) - len(t.activeStreams)) - } - ms := t.maxStreams - t.maxStreams = int(s.Val) - t.mu.Unlock() - if reset { - t.streamsQuota.reset(int(s.Val) - ms) - } - case http2.SettingInitialWindowSize: - t.mu.Lock() - for _, stream := range t.activeStreams { - // Adjust the sending quota for each stream. - stream.sendQuotaPool.reset(int(s.Val - t.streamSendQuota)) - } - t.streamSendQuota = s.Val - t.mu.Unlock() - } - } -} - -// controller running in a separate goroutine takes charge of sending control -// frames (e.g., window update, reset stream, setting, etc.) to the server. -func (t *http2Client) controller() { - for { - select { - case i := <-t.controlBuf.get(): - t.controlBuf.load() - select { - case <-t.writableChan: - switch i := i.(type) { - case *windowUpdate: - t.framer.writeWindowUpdate(true, i.streamID, i.increment) - case *settings: - if i.ack { - t.framer.writeSettingsAck(true) - t.applySettings(i.ss) - } else { - t.framer.writeSettings(true, i.ss...) - } - case *resetStream: - t.framer.writeRSTStream(true, i.streamID, i.code) - case *flushIO: - t.framer.flushWrite() - case *ping: - t.framer.writePing(true, i.ack, i.data) - default: - grpclog.Printf("transport: http2Client.controller got unexpected item type %v\n", i) - } - t.writableChan <- 0 - continue - case <-t.shutdownChan: - return - } - case <-t.shutdownChan: - return - } - } -} - -func (t *http2Client) Error() <-chan struct{} { - return t.errorChan -} - -func (t *http2Client) GoAway() <-chan struct{} { - return t.goAway -} - -func (t *http2Client) notifyError(err error) { - t.mu.Lock() - // make sure t.errorChan is closed only once. - if t.state == draining { - t.mu.Unlock() - t.Close() - return - } - if t.state == reachable { - t.state = unreachable - close(t.errorChan) - grpclog.Printf("transport: http2Client.notifyError got notified that the client transport was broken %v.", err) - } - t.mu.Unlock() -} diff --git a/vendor/google.golang.org/grpc/transport/http2_server.go b/vendor/google.golang.org/grpc/transport/http2_server.go deleted file mode 100644 index 16010d55fb..0000000000 --- a/vendor/google.golang.org/grpc/transport/http2_server.go +++ /dev/null @@ -1,774 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "bytes" - "errors" - "io" - "math" - "net" - "strconv" - "sync" - - "golang.org/x/net/context" - "golang.org/x/net/http2" - "golang.org/x/net/http2/hpack" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/credentials" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/peer" -) - -// ErrIllegalHeaderWrite indicates that setting header is illegal because of -// the stream's state. -var ErrIllegalHeaderWrite = errors.New("transport: the stream is done or WriteHeader was already called") - -// http2Server implements the ServerTransport interface with HTTP2. -type http2Server struct { - conn net.Conn - maxStreamID uint32 // max stream ID ever seen - authInfo credentials.AuthInfo // auth info about the connection - // writableChan synchronizes write access to the transport. - // A writer acquires the write lock by receiving a value on writableChan - // and releases it by sending on writableChan. - writableChan chan int - // shutdownChan is closed when Close is called. - // Blocking operations should select on shutdownChan to avoid - // blocking forever after Close. - shutdownChan chan struct{} - framer *framer - hBuf *bytes.Buffer // the buffer for HPACK encoding - hEnc *hpack.Encoder // HPACK encoder - - // The max number of concurrent streams. - maxStreams uint32 - // controlBuf delivers all the control related tasks (e.g., window - // updates, reset streams, and various settings) to the controller. - controlBuf *recvBuffer - fc *inFlow - // sendQuotaPool provides flow control to outbound message. - sendQuotaPool *quotaPool - - mu sync.Mutex // guard the following - state transportState - activeStreams map[uint32]*Stream - // the per-stream outbound flow control window size set by the peer. - streamSendQuota uint32 -} - -// newHTTP2Server constructs a ServerTransport based on HTTP2. ConnectionError is -// returned if something goes wrong. -func newHTTP2Server(conn net.Conn, maxStreams uint32, authInfo credentials.AuthInfo) (_ ServerTransport, err error) { - framer := newFramer(conn) - // Send initial settings as connection preface to client. - var settings []http2.Setting - // TODO(zhaoq): Have a better way to signal "no limit" because 0 is - // permitted in the HTTP2 spec. - if maxStreams == 0 { - maxStreams = math.MaxUint32 - } else { - settings = append(settings, http2.Setting{ - ID: http2.SettingMaxConcurrentStreams, - Val: maxStreams, - }) - } - if initialWindowSize != defaultWindowSize { - settings = append(settings, http2.Setting{ - ID: http2.SettingInitialWindowSize, - Val: uint32(initialWindowSize)}) - } - if err := framer.writeSettings(true, settings...); err != nil { - return nil, ConnectionErrorf(true, err, "transport: %v", err) - } - // Adjust the connection flow control window if needed. - if delta := uint32(initialConnWindowSize - defaultWindowSize); delta > 0 { - if err := framer.writeWindowUpdate(true, 0, delta); err != nil { - return nil, ConnectionErrorf(true, err, "transport: %v", err) - } - } - var buf bytes.Buffer - t := &http2Server{ - conn: conn, - authInfo: authInfo, - framer: framer, - hBuf: &buf, - hEnc: hpack.NewEncoder(&buf), - maxStreams: maxStreams, - controlBuf: newRecvBuffer(), - fc: &inFlow{limit: initialConnWindowSize}, - sendQuotaPool: newQuotaPool(defaultWindowSize), - state: reachable, - writableChan: make(chan int, 1), - shutdownChan: make(chan struct{}), - activeStreams: make(map[uint32]*Stream), - streamSendQuota: defaultWindowSize, - } - go t.controller() - t.writableChan <- 0 - return t, nil -} - -// operateHeader takes action on the decoded headers. -func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(*Stream)) (close bool) { - buf := newRecvBuffer() - s := &Stream{ - id: frame.Header().StreamID, - st: t, - buf: buf, - fc: &inFlow{limit: initialWindowSize}, - } - - var state decodeState - for _, hf := range frame.Fields { - state.processHeaderField(hf) - } - if err := state.err; err != nil { - if se, ok := err.(StreamError); ok { - t.controlBuf.put(&resetStream{s.id, statusCodeConvTab[se.Code]}) - } - return - } - - if frame.StreamEnded() { - // s is just created by the caller. No lock needed. - s.state = streamReadDone - } - s.recvCompress = state.encoding - if state.timeoutSet { - s.ctx, s.cancel = context.WithTimeout(context.TODO(), state.timeout) - } else { - s.ctx, s.cancel = context.WithCancel(context.TODO()) - } - pr := &peer.Peer{ - Addr: t.conn.RemoteAddr(), - } - // Attach Auth info if there is any. - if t.authInfo != nil { - pr.AuthInfo = t.authInfo - } - s.ctx = peer.NewContext(s.ctx, pr) - // Cache the current stream to the context so that the server application - // can find out. Required when the server wants to send some metadata - // back to the client (unary call only). - s.ctx = newContextWithStream(s.ctx, s) - // Attach the received metadata to the context. - if len(state.mdata) > 0 { - s.ctx = metadata.NewContext(s.ctx, state.mdata) - } - - s.dec = &recvBufferReader{ - ctx: s.ctx, - recv: s.buf, - } - s.recvCompress = state.encoding - s.method = state.method - t.mu.Lock() - if t.state != reachable { - t.mu.Unlock() - return - } - if uint32(len(t.activeStreams)) >= t.maxStreams { - t.mu.Unlock() - t.controlBuf.put(&resetStream{s.id, http2.ErrCodeRefusedStream}) - return - } - if s.id%2 != 1 || s.id <= t.maxStreamID { - t.mu.Unlock() - // illegal gRPC stream id. - grpclog.Println("transport: http2Server.HandleStreams received an illegal stream id: ", s.id) - return true - } - t.maxStreamID = s.id - s.sendQuotaPool = newQuotaPool(int(t.streamSendQuota)) - t.activeStreams[s.id] = s - t.mu.Unlock() - s.windowHandler = func(n int) { - t.updateWindow(s, uint32(n)) - } - handle(s) - return -} - -// HandleStreams receives incoming streams using the given handler. This is -// typically run in a separate goroutine. -func (t *http2Server) HandleStreams(handle func(*Stream)) { - // Check the validity of client preface. - preface := make([]byte, len(clientPreface)) - if _, err := io.ReadFull(t.conn, preface); err != nil { - grpclog.Printf("transport: http2Server.HandleStreams failed to receive the preface from client: %v", err) - t.Close() - return - } - if !bytes.Equal(preface, clientPreface) { - grpclog.Printf("transport: http2Server.HandleStreams received bogus greeting from client: %q", preface) - t.Close() - return - } - - frame, err := t.framer.readFrame() - if err == io.EOF || err == io.ErrUnexpectedEOF { - t.Close() - return - } - if err != nil { - grpclog.Printf("transport: http2Server.HandleStreams failed to read frame: %v", err) - t.Close() - return - } - sf, ok := frame.(*http2.SettingsFrame) - if !ok { - grpclog.Printf("transport: http2Server.HandleStreams saw invalid preface type %T from client", frame) - t.Close() - return - } - t.handleSettings(sf) - - for { - frame, err := t.framer.readFrame() - if err != nil { - if se, ok := err.(http2.StreamError); ok { - t.mu.Lock() - s := t.activeStreams[se.StreamID] - t.mu.Unlock() - if s != nil { - t.closeStream(s) - } - t.controlBuf.put(&resetStream{se.StreamID, se.Code}) - continue - } - if err == io.EOF || err == io.ErrUnexpectedEOF { - t.Close() - return - } - grpclog.Printf("transport: http2Server.HandleStreams failed to read frame: %v", err) - t.Close() - return - } - switch frame := frame.(type) { - case *http2.MetaHeadersFrame: - if t.operateHeaders(frame, handle) { - t.Close() - break - } - case *http2.DataFrame: - t.handleData(frame) - case *http2.RSTStreamFrame: - t.handleRSTStream(frame) - case *http2.SettingsFrame: - t.handleSettings(frame) - case *http2.PingFrame: - t.handlePing(frame) - case *http2.WindowUpdateFrame: - t.handleWindowUpdate(frame) - case *http2.GoAwayFrame: - // TODO: Handle GoAway from the client appropriately. - default: - grpclog.Printf("transport: http2Server.HandleStreams found unhandled frame type %v.", frame) - } - } -} - -func (t *http2Server) getStream(f http2.Frame) (*Stream, bool) { - t.mu.Lock() - defer t.mu.Unlock() - if t.activeStreams == nil { - // The transport is closing. - return nil, false - } - s, ok := t.activeStreams[f.Header().StreamID] - if !ok { - // The stream is already done. - return nil, false - } - return s, true -} - -// updateWindow adjusts the inbound quota for the stream and the transport. -// Window updates will deliver to the controller for sending when -// the cumulative quota exceeds the corresponding threshold. -func (t *http2Server) updateWindow(s *Stream, n uint32) { - s.mu.Lock() - defer s.mu.Unlock() - if s.state == streamDone { - return - } - if w := t.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - if w := s.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{s.id, w}) - } -} - -func (t *http2Server) handleData(f *http2.DataFrame) { - size := len(f.Data()) - if err := t.fc.onData(uint32(size)); err != nil { - grpclog.Printf("transport: http2Server %v", err) - t.Close() - return - } - // Select the right stream to dispatch. - s, ok := t.getStream(f) - if !ok { - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - return - } - if size > 0 { - s.mu.Lock() - if s.state == streamDone { - s.mu.Unlock() - // The stream has been closed. Release the corresponding quota. - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - return - } - if err := s.fc.onData(uint32(size)); err != nil { - s.mu.Unlock() - t.closeStream(s) - t.controlBuf.put(&resetStream{s.id, http2.ErrCodeFlowControl}) - return - } - s.mu.Unlock() - // TODO(bradfitz, zhaoq): A copy is required here because there is no - // guarantee f.Data() is consumed before the arrival of next frame. - // Can this copy be eliminated? - data := make([]byte, size) - copy(data, f.Data()) - s.write(recvMsg{data: data}) - } - if f.Header().Flags.Has(http2.FlagDataEndStream) { - // Received the end of stream from the client. - s.mu.Lock() - if s.state != streamDone { - s.state = streamReadDone - } - s.mu.Unlock() - s.write(recvMsg{err: io.EOF}) - } -} - -func (t *http2Server) handleRSTStream(f *http2.RSTStreamFrame) { - s, ok := t.getStream(f) - if !ok { - return - } - t.closeStream(s) -} - -func (t *http2Server) handleSettings(f *http2.SettingsFrame) { - if f.IsAck() { - return - } - var ss []http2.Setting - f.ForeachSetting(func(s http2.Setting) error { - ss = append(ss, s) - return nil - }) - // The settings will be applied once the ack is sent. - t.controlBuf.put(&settings{ack: true, ss: ss}) -} - -func (t *http2Server) handlePing(f *http2.PingFrame) { - pingAck := &ping{ack: true} - copy(pingAck.data[:], f.Data[:]) - t.controlBuf.put(pingAck) -} - -func (t *http2Server) handleWindowUpdate(f *http2.WindowUpdateFrame) { - id := f.Header().StreamID - incr := f.Increment - if id == 0 { - t.sendQuotaPool.add(int(incr)) - return - } - if s, ok := t.getStream(f); ok { - s.sendQuotaPool.add(int(incr)) - } -} - -func (t *http2Server) writeHeaders(s *Stream, b *bytes.Buffer, endStream bool) error { - first := true - endHeaders := false - var err error - // Sends the headers in a single batch. - for !endHeaders { - size := t.hBuf.Len() - if size > http2MaxFrameLen { - size = http2MaxFrameLen - } else { - endHeaders = true - } - if first { - p := http2.HeadersFrameParam{ - StreamID: s.id, - BlockFragment: b.Next(size), - EndStream: endStream, - EndHeaders: endHeaders, - } - err = t.framer.writeHeaders(endHeaders, p) - first = false - } else { - err = t.framer.writeContinuation(endHeaders, s.id, endHeaders, b.Next(size)) - } - if err != nil { - t.Close() - return ConnectionErrorf(true, err, "transport: %v", err) - } - } - return nil -} - -// WriteHeader sends the header metedata md back to the client. -func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error { - s.mu.Lock() - if s.headerOk || s.state == streamDone { - s.mu.Unlock() - return ErrIllegalHeaderWrite - } - s.headerOk = true - s.mu.Unlock() - if _, err := wait(s.ctx, nil, nil, t.shutdownChan, t.writableChan); err != nil { - return err - } - t.hBuf.Reset() - t.hEnc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"}) - t.hEnc.WriteField(hpack.HeaderField{Name: "content-type", Value: "application/grpc"}) - if s.sendCompress != "" { - t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-encoding", Value: s.sendCompress}) - } - for k, v := range md { - if isReservedHeader(k) { - // Clients don't tolerate reading restricted headers after some non restricted ones were sent. - continue - } - for _, entry := range v { - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry}) - } - } - if err := t.writeHeaders(s, t.hBuf, false); err != nil { - return err - } - t.writableChan <- 0 - return nil -} - -// WriteStatus sends stream status to the client and terminates the stream. -// There is no further I/O operations being able to perform on this stream. -// TODO(zhaoq): Now it indicates the end of entire stream. Revisit if early -// OK is adopted. -func (t *http2Server) WriteStatus(s *Stream, statusCode codes.Code, statusDesc string) error { - var headersSent bool - s.mu.Lock() - if s.state == streamDone { - s.mu.Unlock() - return nil - } - if s.headerOk { - headersSent = true - } - s.mu.Unlock() - if _, err := wait(s.ctx, nil, nil, t.shutdownChan, t.writableChan); err != nil { - return err - } - t.hBuf.Reset() - if !headersSent { - t.hEnc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"}) - t.hEnc.WriteField(hpack.HeaderField{Name: "content-type", Value: "application/grpc"}) - } - t.hEnc.WriteField( - hpack.HeaderField{ - Name: "grpc-status", - Value: strconv.Itoa(int(statusCode)), - }) - t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-message", Value: encodeGrpcMessage(statusDesc)}) - // Attach the trailer metadata. - for k, v := range s.trailer { - // Clients don't tolerate reading restricted headers after some non restricted ones were sent. - if isReservedHeader(k) { - continue - } - for _, entry := range v { - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry}) - } - } - if err := t.writeHeaders(s, t.hBuf, true); err != nil { - t.Close() - return err - } - t.closeStream(s) - t.writableChan <- 0 - return nil -} - -// Write converts the data into HTTP2 data frame and sends it out. Non-nil error -// is returns if it fails (e.g., framing error, transport error). -func (t *http2Server) Write(s *Stream, data []byte, opts *Options) error { - // TODO(zhaoq): Support multi-writers for a single stream. - var writeHeaderFrame bool - s.mu.Lock() - if s.state == streamDone { - s.mu.Unlock() - return StreamErrorf(codes.Unknown, "the stream has been done") - } - if !s.headerOk { - writeHeaderFrame = true - s.headerOk = true - } - s.mu.Unlock() - if writeHeaderFrame { - if _, err := wait(s.ctx, nil, nil, t.shutdownChan, t.writableChan); err != nil { - return err - } - t.hBuf.Reset() - t.hEnc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"}) - t.hEnc.WriteField(hpack.HeaderField{Name: "content-type", Value: "application/grpc"}) - if s.sendCompress != "" { - t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-encoding", Value: s.sendCompress}) - } - p := http2.HeadersFrameParam{ - StreamID: s.id, - BlockFragment: t.hBuf.Bytes(), - EndHeaders: true, - } - if err := t.framer.writeHeaders(false, p); err != nil { - t.Close() - return ConnectionErrorf(true, err, "transport: %v", err) - } - t.writableChan <- 0 - } - r := bytes.NewBuffer(data) - for { - if r.Len() == 0 { - return nil - } - size := http2MaxFrameLen - s.sendQuotaPool.add(0) - // Wait until the stream has some quota to send the data. - sq, err := wait(s.ctx, nil, nil, t.shutdownChan, s.sendQuotaPool.acquire()) - if err != nil { - return err - } - t.sendQuotaPool.add(0) - // Wait until the transport has some quota to send the data. - tq, err := wait(s.ctx, nil, nil, t.shutdownChan, t.sendQuotaPool.acquire()) - if err != nil { - if _, ok := err.(StreamError); ok { - t.sendQuotaPool.cancel() - } - return err - } - if sq < size { - size = sq - } - if tq < size { - size = tq - } - p := r.Next(size) - ps := len(p) - if ps < sq { - // Overbooked stream quota. Return it back. - s.sendQuotaPool.add(sq - ps) - } - if ps < tq { - // Overbooked transport quota. Return it back. - t.sendQuotaPool.add(tq - ps) - } - t.framer.adjustNumWriters(1) - // Got some quota. Try to acquire writing privilege on the - // transport. - if _, err := wait(s.ctx, nil, nil, t.shutdownChan, t.writableChan); err != nil { - if _, ok := err.(StreamError); ok { - // Return the connection quota back. - t.sendQuotaPool.add(ps) - } - if t.framer.adjustNumWriters(-1) == 0 { - // This writer is the last one in this batch and has the - // responsibility to flush the buffered frames. It queues - // a flush request to controlBuf instead of flushing directly - // in order to avoid the race with other writing or flushing. - t.controlBuf.put(&flushIO{}) - } - return err - } - select { - case <-s.ctx.Done(): - t.sendQuotaPool.add(ps) - if t.framer.adjustNumWriters(-1) == 0 { - t.controlBuf.put(&flushIO{}) - } - t.writableChan <- 0 - return ContextErr(s.ctx.Err()) - default: - } - var forceFlush bool - if r.Len() == 0 && t.framer.adjustNumWriters(0) == 1 && !opts.Last { - forceFlush = true - } - if err := t.framer.writeData(forceFlush, s.id, false, p); err != nil { - t.Close() - return ConnectionErrorf(true, err, "transport: %v", err) - } - if t.framer.adjustNumWriters(-1) == 0 { - t.framer.flushWrite() - } - t.writableChan <- 0 - } - -} - -func (t *http2Server) applySettings(ss []http2.Setting) { - for _, s := range ss { - if s.ID == http2.SettingInitialWindowSize { - t.mu.Lock() - defer t.mu.Unlock() - for _, stream := range t.activeStreams { - stream.sendQuotaPool.reset(int(s.Val - t.streamSendQuota)) - } - t.streamSendQuota = s.Val - } - - } -} - -// controller running in a separate goroutine takes charge of sending control -// frames (e.g., window update, reset stream, setting, etc.) to the server. -func (t *http2Server) controller() { - for { - select { - case i := <-t.controlBuf.get(): - t.controlBuf.load() - select { - case <-t.writableChan: - switch i := i.(type) { - case *windowUpdate: - t.framer.writeWindowUpdate(true, i.streamID, i.increment) - case *settings: - if i.ack { - t.framer.writeSettingsAck(true) - t.applySettings(i.ss) - } else { - t.framer.writeSettings(true, i.ss...) - } - case *resetStream: - t.framer.writeRSTStream(true, i.streamID, i.code) - case *goAway: - t.mu.Lock() - if t.state == closing { - t.mu.Unlock() - // The transport is closing. - return - } - sid := t.maxStreamID - t.state = draining - t.mu.Unlock() - t.framer.writeGoAway(true, sid, http2.ErrCodeNo, nil) - case *flushIO: - t.framer.flushWrite() - case *ping: - t.framer.writePing(true, i.ack, i.data) - default: - grpclog.Printf("transport: http2Server.controller got unexpected item type %v\n", i) - } - t.writableChan <- 0 - continue - case <-t.shutdownChan: - return - } - case <-t.shutdownChan: - return - } - } -} - -// Close starts shutting down the http2Server transport. -// TODO(zhaoq): Now the destruction is not blocked on any pending streams. This -// could cause some resource issue. Revisit this later. -func (t *http2Server) Close() (err error) { - t.mu.Lock() - if t.state == closing { - t.mu.Unlock() - return errors.New("transport: Close() was already called") - } - t.state = closing - streams := t.activeStreams - t.activeStreams = nil - t.mu.Unlock() - close(t.shutdownChan) - err = t.conn.Close() - // Cancel all active streams. - for _, s := range streams { - s.cancel() - } - return -} - -// closeStream clears the footprint of a stream when the stream is not needed -// any more. -func (t *http2Server) closeStream(s *Stream) { - t.mu.Lock() - delete(t.activeStreams, s.id) - if t.state == draining && len(t.activeStreams) == 0 { - defer t.Close() - } - t.mu.Unlock() - // In case stream sending and receiving are invoked in separate - // goroutines (e.g., bi-directional streaming), cancel needs to be - // called to interrupt the potential blocking on other goroutines. - s.cancel() - s.mu.Lock() - if q := s.fc.resetPendingData(); q > 0 { - if w := t.fc.onRead(q); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - } - if s.state == streamDone { - s.mu.Unlock() - return - } - s.state = streamDone - s.mu.Unlock() -} - -func (t *http2Server) RemoteAddr() net.Addr { - return t.conn.RemoteAddr() -} - -func (t *http2Server) Drain() { - t.controlBuf.put(&goAway{}) -} diff --git a/vendor/google.golang.org/grpc/transport/http_util.go b/vendor/google.golang.org/grpc/transport/http_util.go deleted file mode 100644 index 79da512640..0000000000 --- a/vendor/google.golang.org/grpc/transport/http_util.go +++ /dev/null @@ -1,510 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "bufio" - "bytes" - "fmt" - "io" - "net" - "strconv" - "strings" - "sync/atomic" - "time" - - "golang.org/x/net/http2" - "golang.org/x/net/http2/hpack" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/metadata" -) - -const ( - // The primary user agent - primaryUA = "grpc-go/1.0" - // http2MaxFrameLen specifies the max length of a HTTP2 frame. - http2MaxFrameLen = 16384 // 16KB frame - // http://http2.github.io/http2-spec/#SettingValues - http2InitHeaderTableSize = 4096 - // http2IOBufSize specifies the buffer size for sending frames. - http2IOBufSize = 32 * 1024 -) - -var ( - clientPreface = []byte(http2.ClientPreface) - http2ErrConvTab = map[http2.ErrCode]codes.Code{ - http2.ErrCodeNo: codes.Internal, - http2.ErrCodeProtocol: codes.Internal, - http2.ErrCodeInternal: codes.Internal, - http2.ErrCodeFlowControl: codes.ResourceExhausted, - http2.ErrCodeSettingsTimeout: codes.Internal, - http2.ErrCodeStreamClosed: codes.Internal, - http2.ErrCodeFrameSize: codes.Internal, - http2.ErrCodeRefusedStream: codes.Unavailable, - http2.ErrCodeCancel: codes.Canceled, - http2.ErrCodeCompression: codes.Internal, - http2.ErrCodeConnect: codes.Internal, - http2.ErrCodeEnhanceYourCalm: codes.ResourceExhausted, - http2.ErrCodeInadequateSecurity: codes.PermissionDenied, - http2.ErrCodeHTTP11Required: codes.FailedPrecondition, - } - statusCodeConvTab = map[codes.Code]http2.ErrCode{ - codes.Internal: http2.ErrCodeInternal, - codes.Canceled: http2.ErrCodeCancel, - codes.Unavailable: http2.ErrCodeRefusedStream, - codes.ResourceExhausted: http2.ErrCodeEnhanceYourCalm, - codes.PermissionDenied: http2.ErrCodeInadequateSecurity, - } -) - -// Records the states during HPACK decoding. Must be reset once the -// decoding of the entire headers are finished. -type decodeState struct { - err error // first error encountered decoding - - encoding string - // statusCode caches the stream status received from the trailer - // the server sent. Client side only. - statusCode codes.Code - statusDesc string - // Server side only fields. - timeoutSet bool - timeout time.Duration - method string - // key-value metadata map from the peer. - mdata map[string][]string -} - -// isReservedHeader checks whether hdr belongs to HTTP2 headers -// reserved by gRPC protocol. Any other headers are classified as the -// user-specified metadata. -func isReservedHeader(hdr string) bool { - if hdr != "" && hdr[0] == ':' { - return true - } - switch hdr { - case "content-type", - "grpc-message-type", - "grpc-encoding", - "grpc-message", - "grpc-status", - "grpc-timeout", - "te": - return true - default: - return false - } -} - -// isWhitelistedPseudoHeader checks whether hdr belongs to HTTP2 pseudoheaders -// that should be propagated into metadata visible to users. -func isWhitelistedPseudoHeader(hdr string) bool { - switch hdr { - case ":authority": - return true - default: - return false - } -} - -func (d *decodeState) setErr(err error) { - if d.err == nil { - d.err = err - } -} - -func validContentType(t string) bool { - e := "application/grpc" - if !strings.HasPrefix(t, e) { - return false - } - // Support variations on the content-type - // (e.g. "application/grpc+blah", "application/grpc;blah"). - if len(t) > len(e) && t[len(e)] != '+' && t[len(e)] != ';' { - return false - } - return true -} - -func (d *decodeState) processHeaderField(f hpack.HeaderField) { - switch f.Name { - case "content-type": - if !validContentType(f.Value) { - d.setErr(StreamErrorf(codes.FailedPrecondition, "transport: received the unexpected content-type %q", f.Value)) - return - } - case "grpc-encoding": - d.encoding = f.Value - case "grpc-status": - code, err := strconv.Atoi(f.Value) - if err != nil { - d.setErr(StreamErrorf(codes.Internal, "transport: malformed grpc-status: %v", err)) - return - } - d.statusCode = codes.Code(code) - case "grpc-message": - d.statusDesc = decodeGrpcMessage(f.Value) - case "grpc-timeout": - d.timeoutSet = true - var err error - d.timeout, err = decodeTimeout(f.Value) - if err != nil { - d.setErr(StreamErrorf(codes.Internal, "transport: malformed time-out: %v", err)) - return - } - case ":path": - d.method = f.Value - default: - if !isReservedHeader(f.Name) || isWhitelistedPseudoHeader(f.Name) { - if f.Name == "user-agent" { - i := strings.LastIndex(f.Value, " ") - if i == -1 { - // There is no application user agent string being set. - return - } - // Extract the application user agent string. - f.Value = f.Value[:i] - } - if d.mdata == nil { - d.mdata = make(map[string][]string) - } - k, v, err := metadata.DecodeKeyValue(f.Name, f.Value) - if err != nil { - grpclog.Printf("Failed to decode (%q, %q): %v", f.Name, f.Value, err) - return - } - d.mdata[k] = append(d.mdata[k], v) - } - } -} - -type timeoutUnit uint8 - -const ( - hour timeoutUnit = 'H' - minute timeoutUnit = 'M' - second timeoutUnit = 'S' - millisecond timeoutUnit = 'm' - microsecond timeoutUnit = 'u' - nanosecond timeoutUnit = 'n' -) - -func timeoutUnitToDuration(u timeoutUnit) (d time.Duration, ok bool) { - switch u { - case hour: - return time.Hour, true - case minute: - return time.Minute, true - case second: - return time.Second, true - case millisecond: - return time.Millisecond, true - case microsecond: - return time.Microsecond, true - case nanosecond: - return time.Nanosecond, true - default: - } - return -} - -const maxTimeoutValue int64 = 100000000 - 1 - -// div does integer division and round-up the result. Note that this is -// equivalent to (d+r-1)/r but has less chance to overflow. -func div(d, r time.Duration) int64 { - if m := d % r; m > 0 { - return int64(d/r + 1) - } - return int64(d / r) -} - -// TODO(zhaoq): It is the simplistic and not bandwidth efficient. Improve it. -func encodeTimeout(t time.Duration) string { - if d := div(t, time.Nanosecond); d <= maxTimeoutValue { - return strconv.FormatInt(d, 10) + "n" - } - if d := div(t, time.Microsecond); d <= maxTimeoutValue { - return strconv.FormatInt(d, 10) + "u" - } - if d := div(t, time.Millisecond); d <= maxTimeoutValue { - return strconv.FormatInt(d, 10) + "m" - } - if d := div(t, time.Second); d <= maxTimeoutValue { - return strconv.FormatInt(d, 10) + "S" - } - if d := div(t, time.Minute); d <= maxTimeoutValue { - return strconv.FormatInt(d, 10) + "M" - } - // Note that maxTimeoutValue * time.Hour > MaxInt64. - return strconv.FormatInt(div(t, time.Hour), 10) + "H" -} - -func decodeTimeout(s string) (time.Duration, error) { - size := len(s) - if size < 2 { - return 0, fmt.Errorf("transport: timeout string is too short: %q", s) - } - unit := timeoutUnit(s[size-1]) - d, ok := timeoutUnitToDuration(unit) - if !ok { - return 0, fmt.Errorf("transport: timeout unit is not recognized: %q", s) - } - t, err := strconv.ParseInt(s[:size-1], 10, 64) - if err != nil { - return 0, err - } - return d * time.Duration(t), nil -} - -const ( - spaceByte = ' ' - tildaByte = '~' - percentByte = '%' -) - -// encodeGrpcMessage is used to encode status code in header field -// "grpc-message". -// It checks to see if each individual byte in msg is an -// allowable byte, and then either percent encoding or passing it through. -// When percent encoding, the byte is converted into hexadecimal notation -// with a '%' prepended. -func encodeGrpcMessage(msg string) string { - if msg == "" { - return "" - } - lenMsg := len(msg) - for i := 0; i < lenMsg; i++ { - c := msg[i] - if !(c >= spaceByte && c < tildaByte && c != percentByte) { - return encodeGrpcMessageUnchecked(msg) - } - } - return msg -} - -func encodeGrpcMessageUnchecked(msg string) string { - var buf bytes.Buffer - lenMsg := len(msg) - for i := 0; i < lenMsg; i++ { - c := msg[i] - if c >= spaceByte && c < tildaByte && c != percentByte { - buf.WriteByte(c) - } else { - buf.WriteString(fmt.Sprintf("%%%02X", c)) - } - } - return buf.String() -} - -// decodeGrpcMessage decodes the msg encoded by encodeGrpcMessage. -func decodeGrpcMessage(msg string) string { - if msg == "" { - return "" - } - lenMsg := len(msg) - for i := 0; i < lenMsg; i++ { - if msg[i] == percentByte && i+2 < lenMsg { - return decodeGrpcMessageUnchecked(msg) - } - } - return msg -} - -func decodeGrpcMessageUnchecked(msg string) string { - var buf bytes.Buffer - lenMsg := len(msg) - for i := 0; i < lenMsg; i++ { - c := msg[i] - if c == percentByte && i+2 < lenMsg { - parsed, err := strconv.ParseInt(msg[i+1:i+3], 16, 8) - if err != nil { - buf.WriteByte(c) - } else { - buf.WriteByte(byte(parsed)) - i += 2 - } - } else { - buf.WriteByte(c) - } - } - return buf.String() -} - -type framer struct { - numWriters int32 - reader io.Reader - writer *bufio.Writer - fr *http2.Framer -} - -func newFramer(conn net.Conn) *framer { - f := &framer{ - reader: bufio.NewReaderSize(conn, http2IOBufSize), - writer: bufio.NewWriterSize(conn, http2IOBufSize), - } - f.fr = http2.NewFramer(f.writer, f.reader) - f.fr.ReadMetaHeaders = hpack.NewDecoder(http2InitHeaderTableSize, nil) - return f -} - -func (f *framer) adjustNumWriters(i int32) int32 { - return atomic.AddInt32(&f.numWriters, i) -} - -// The following writeXXX functions can only be called when the caller gets -// unblocked from writableChan channel (i.e., owns the privilege to write). - -func (f *framer) writeContinuation(forceFlush bool, streamID uint32, endHeaders bool, headerBlockFragment []byte) error { - if err := f.fr.WriteContinuation(streamID, endHeaders, headerBlockFragment); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writeData(forceFlush bool, streamID uint32, endStream bool, data []byte) error { - if err := f.fr.WriteData(streamID, endStream, data); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writeGoAway(forceFlush bool, maxStreamID uint32, code http2.ErrCode, debugData []byte) error { - if err := f.fr.WriteGoAway(maxStreamID, code, debugData); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writeHeaders(forceFlush bool, p http2.HeadersFrameParam) error { - if err := f.fr.WriteHeaders(p); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writePing(forceFlush, ack bool, data [8]byte) error { - if err := f.fr.WritePing(ack, data); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writePriority(forceFlush bool, streamID uint32, p http2.PriorityParam) error { - if err := f.fr.WritePriority(streamID, p); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writePushPromise(forceFlush bool, p http2.PushPromiseParam) error { - if err := f.fr.WritePushPromise(p); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writeRSTStream(forceFlush bool, streamID uint32, code http2.ErrCode) error { - if err := f.fr.WriteRSTStream(streamID, code); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writeSettings(forceFlush bool, settings ...http2.Setting) error { - if err := f.fr.WriteSettings(settings...); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writeSettingsAck(forceFlush bool) error { - if err := f.fr.WriteSettingsAck(); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) writeWindowUpdate(forceFlush bool, streamID, incr uint32) error { - if err := f.fr.WriteWindowUpdate(streamID, incr); err != nil { - return err - } - if forceFlush { - return f.writer.Flush() - } - return nil -} - -func (f *framer) flushWrite() error { - return f.writer.Flush() -} - -func (f *framer) readFrame() (http2.Frame, error) { - return f.fr.ReadFrame() -} - -func (f *framer) errorDetail() error { - return f.fr.ErrorDetail() -} diff --git a/vendor/google.golang.org/grpc/transport/pre_go16.go b/vendor/google.golang.org/grpc/transport/pre_go16.go deleted file mode 100644 index 33d91c17c4..0000000000 --- a/vendor/google.golang.org/grpc/transport/pre_go16.go +++ /dev/null @@ -1,51 +0,0 @@ -// +build !go1.6 - -/* - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "net" - "time" - - "golang.org/x/net/context" -) - -// dialContext connects to the address on the named network. -func dialContext(ctx context.Context, network, address string) (net.Conn, error) { - var dialer net.Dialer - if deadline, ok := ctx.Deadline(); ok { - dialer.Timeout = deadline.Sub(time.Now()) - } - return dialer.Dial(network, address) -} diff --git a/vendor/google.golang.org/grpc/transport/transport.go b/vendor/google.golang.org/grpc/transport/transport.go deleted file mode 100644 index b31769abe1..0000000000 --- a/vendor/google.golang.org/grpc/transport/transport.go +++ /dev/null @@ -1,578 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -/* -Package transport defines and implements message oriented communication channel -to complete various transactions (e.g., an RPC). -*/ -package transport // import "google.golang.org/grpc/transport" - -import ( - "bytes" - "errors" - "fmt" - "io" - "net" - "sync" - - "golang.org/x/net/context" - "golang.org/x/net/trace" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/credentials" - "google.golang.org/grpc/metadata" -) - -// recvMsg represents the received msg from the transport. All transport -// protocol specific info has been removed. -type recvMsg struct { - data []byte - // nil: received some data - // io.EOF: stream is completed. data is nil. - // other non-nil error: transport failure. data is nil. - err error -} - -func (*recvMsg) item() {} - -// All items in an out of a recvBuffer should be the same type. -type item interface { - item() -} - -// recvBuffer is an unbounded channel of item. -type recvBuffer struct { - c chan item - mu sync.Mutex - backlog []item -} - -func newRecvBuffer() *recvBuffer { - b := &recvBuffer{ - c: make(chan item, 1), - } - return b -} - -func (b *recvBuffer) put(r item) { - b.mu.Lock() - defer b.mu.Unlock() - if len(b.backlog) == 0 { - select { - case b.c <- r: - return - default: - } - } - b.backlog = append(b.backlog, r) -} - -func (b *recvBuffer) load() { - b.mu.Lock() - defer b.mu.Unlock() - if len(b.backlog) > 0 { - select { - case b.c <- b.backlog[0]: - b.backlog = b.backlog[1:] - default: - } - } -} - -// get returns the channel that receives an item in the buffer. -// -// Upon receipt of an item, the caller should call load to send another -// item onto the channel if there is any. -func (b *recvBuffer) get() <-chan item { - return b.c -} - -// recvBufferReader implements io.Reader interface to read the data from -// recvBuffer. -type recvBufferReader struct { - ctx context.Context - goAway chan struct{} - recv *recvBuffer - last *bytes.Reader // Stores the remaining data in the previous calls. - err error -} - -// Read reads the next len(p) bytes from last. If last is drained, it tries to -// read additional data from recv. It blocks if there no additional data available -// in recv. If Read returns any non-nil error, it will continue to return that error. -func (r *recvBufferReader) Read(p []byte) (n int, err error) { - if r.err != nil { - return 0, r.err - } - defer func() { r.err = err }() - if r.last != nil && r.last.Len() > 0 { - // Read remaining data left in last call. - return r.last.Read(p) - } - select { - case <-r.ctx.Done(): - return 0, ContextErr(r.ctx.Err()) - case <-r.goAway: - return 0, ErrStreamDrain - case i := <-r.recv.get(): - r.recv.load() - m := i.(*recvMsg) - if m.err != nil { - return 0, m.err - } - r.last = bytes.NewReader(m.data) - return r.last.Read(p) - } -} - -type streamState uint8 - -const ( - streamActive streamState = iota - streamWriteDone // EndStream sent - streamReadDone // EndStream received - streamDone // the entire stream is finished. -) - -// Stream represents an RPC in the transport layer. -type Stream struct { - id uint32 - // nil for client side Stream. - st ServerTransport - // ctx is the associated context of the stream. - ctx context.Context - cancel context.CancelFunc - // done is closed when the final status arrives. - done chan struct{} - // goAway is closed when the server sent GoAways signal before this stream was initiated. - goAway chan struct{} - // method records the associated RPC method of the stream. - method string - recvCompress string - sendCompress string - buf *recvBuffer - dec io.Reader - fc *inFlow - recvQuota uint32 - // The accumulated inbound quota pending for window update. - updateQuota uint32 - // The handler to control the window update procedure for both this - // particular stream and the associated transport. - windowHandler func(int) - - sendQuotaPool *quotaPool - // Close headerChan to indicate the end of reception of header metadata. - headerChan chan struct{} - // header caches the received header metadata. - header metadata.MD - // The key-value map of trailer metadata. - trailer metadata.MD - - mu sync.RWMutex // guard the following - // headerOK becomes true from the first header is about to send. - headerOk bool - state streamState - // true iff headerChan is closed. Used to avoid closing headerChan - // multiple times. - headerDone bool - // the status received from the server. - statusCode codes.Code - statusDesc string -} - -// RecvCompress returns the compression algorithm applied to the inbound -// message. It is empty string if there is no compression applied. -func (s *Stream) RecvCompress() string { - return s.recvCompress -} - -// SetSendCompress sets the compression algorithm to the stream. -func (s *Stream) SetSendCompress(str string) { - s.sendCompress = str -} - -// Done returns a chanel which is closed when it receives the final status -// from the server. -func (s *Stream) Done() <-chan struct{} { - return s.done -} - -// GoAway returns a channel which is closed when the server sent GoAways signal -// before this stream was initiated. -func (s *Stream) GoAway() <-chan struct{} { - return s.goAway -} - -// Header acquires the key-value pairs of header metadata once it -// is available. It blocks until i) the metadata is ready or ii) there is no -// header metadata or iii) the stream is cancelled/expired. -func (s *Stream) Header() (metadata.MD, error) { - select { - case <-s.ctx.Done(): - return nil, ContextErr(s.ctx.Err()) - case <-s.goAway: - return nil, ErrStreamDrain - case <-s.headerChan: - return s.header.Copy(), nil - } -} - -// Trailer returns the cached trailer metedata. Note that if it is not called -// after the entire stream is done, it could return an empty MD. Client -// side only. -func (s *Stream) Trailer() metadata.MD { - s.mu.RLock() - defer s.mu.RUnlock() - return s.trailer.Copy() -} - -// ServerTransport returns the underlying ServerTransport for the stream. -// The client side stream always returns nil. -func (s *Stream) ServerTransport() ServerTransport { - return s.st -} - -// Context returns the context of the stream. -func (s *Stream) Context() context.Context { - return s.ctx -} - -// TraceContext recreates the context of s with a trace.Trace. -func (s *Stream) TraceContext(tr trace.Trace) { - s.ctx = trace.NewContext(s.ctx, tr) -} - -// Method returns the method for the stream. -func (s *Stream) Method() string { - return s.method -} - -// StatusCode returns statusCode received from the server. -func (s *Stream) StatusCode() codes.Code { - return s.statusCode -} - -// StatusDesc returns statusDesc received from the server. -func (s *Stream) StatusDesc() string { - return s.statusDesc -} - -// ErrIllegalTrailerSet indicates that the trailer has already been set or it -// is too late to do so. -var ErrIllegalTrailerSet = errors.New("transport: trailer has been set") - -// SetTrailer sets the trailer metadata which will be sent with the RPC status -// by the server. This can only be called at most once. Server side only. -func (s *Stream) SetTrailer(md metadata.MD) error { - s.mu.Lock() - defer s.mu.Unlock() - if s.trailer != nil { - return ErrIllegalTrailerSet - } - s.trailer = md.Copy() - return nil -} - -func (s *Stream) write(m recvMsg) { - s.buf.put(&m) -} - -// Read reads all the data available for this Stream from the transport and -// passes them into the decoder, which converts them into a gRPC message stream. -// The error is io.EOF when the stream is done or another non-nil error if -// the stream broke. -func (s *Stream) Read(p []byte) (n int, err error) { - n, err = s.dec.Read(p) - if err != nil { - return - } - s.windowHandler(n) - return -} - -// The key to save transport.Stream in the context. -type streamKey struct{} - -// newContextWithStream creates a new context from ctx and attaches stream -// to it. -func newContextWithStream(ctx context.Context, stream *Stream) context.Context { - return context.WithValue(ctx, streamKey{}, stream) -} - -// StreamFromContext returns the stream saved in ctx. -func StreamFromContext(ctx context.Context) (s *Stream, ok bool) { - s, ok = ctx.Value(streamKey{}).(*Stream) - return -} - -// state of transport -type transportState int - -const ( - reachable transportState = iota - unreachable - closing - draining -) - -// NewServerTransport creates a ServerTransport with conn or non-nil error -// if it fails. -func NewServerTransport(protocol string, conn net.Conn, maxStreams uint32, authInfo credentials.AuthInfo) (ServerTransport, error) { - return newHTTP2Server(conn, maxStreams, authInfo) -} - -// ConnectOptions covers all relevant options for dialing a server. -type ConnectOptions struct { - // UserAgent is the application user agent. - UserAgent string - // Dialer specifies how to dial a network address. - Dialer func(context.Context, string) (net.Conn, error) - // PerRPCCredentials stores the PerRPCCredentials required to issue RPCs. - PerRPCCredentials []credentials.PerRPCCredentials - // TransportCredentials stores the Authenticator required to setup a client connection. - TransportCredentials credentials.TransportCredentials -} - -// NewClientTransport establishes the transport with the required ConnectOptions -// and returns it to the caller. -func NewClientTransport(ctx context.Context, target string, opts ConnectOptions) (ClientTransport, error) { - return newHTTP2Client(ctx, target, opts) -} - -// Options provides additional hints and information for message -// transmission. -type Options struct { - // Last indicates whether this write is the last piece for - // this stream. - Last bool - - // Delay is a hint to the transport implementation for whether - // the data could be buffered for a batching write. The - // Transport implementation may ignore the hint. - Delay bool -} - -// CallHdr carries the information of a particular RPC. -type CallHdr struct { - // Host specifies the peer's host. - Host string - - // Method specifies the operation to perform. - Method string - - // RecvCompress specifies the compression algorithm applied on - // inbound messages. - RecvCompress string - - // SendCompress specifies the compression algorithm applied on - // outbound message. - SendCompress string - - // Flush indicates whether a new stream command should be sent - // to the peer without waiting for the first data. This is - // only a hint. The transport may modify the flush decision - // for performance purposes. - Flush bool -} - -// ClientTransport is the common interface for all gRPC client-side transport -// implementations. -type ClientTransport interface { - // Close tears down this transport. Once it returns, the transport - // should not be accessed any more. The caller must make sure this - // is called only once. - Close() error - - // GracefulClose starts to tear down the transport. It stops accepting - // new RPCs and wait the completion of the pending RPCs. - GracefulClose() error - - // Write sends the data for the given stream. A nil stream indicates - // the write is to be performed on the transport as a whole. - Write(s *Stream, data []byte, opts *Options) error - - // NewStream creates a Stream for an RPC. - NewStream(ctx context.Context, callHdr *CallHdr) (*Stream, error) - - // CloseStream clears the footprint of a stream when the stream is - // not needed any more. The err indicates the error incurred when - // CloseStream is called. Must be called when a stream is finished - // unless the associated transport is closing. - CloseStream(stream *Stream, err error) - - // Error returns a channel that is closed when some I/O error - // happens. Typically the caller should have a goroutine to monitor - // this in order to take action (e.g., close the current transport - // and create a new one) in error case. It should not return nil - // once the transport is initiated. - Error() <-chan struct{} - - // GoAway returns a channel that is closed when ClientTranspor - // receives the draining signal from the server (e.g., GOAWAY frame in - // HTTP/2). - GoAway() <-chan struct{} -} - -// ServerTransport is the common interface for all gRPC server-side transport -// implementations. -// -// Methods may be called concurrently from multiple goroutines, but -// Write methods for a given Stream will be called serially. -type ServerTransport interface { - // HandleStreams receives incoming streams using the given handler. - HandleStreams(func(*Stream)) - - // WriteHeader sends the header metadata for the given stream. - // WriteHeader may not be called on all streams. - WriteHeader(s *Stream, md metadata.MD) error - - // Write sends the data for the given stream. - // Write may not be called on all streams. - Write(s *Stream, data []byte, opts *Options) error - - // WriteStatus sends the status of a stream to the client. - // WriteStatus is the final call made on a stream and always - // occurs. - WriteStatus(s *Stream, statusCode codes.Code, statusDesc string) error - - // Close tears down the transport. Once it is called, the transport - // should not be accessed any more. All the pending streams and their - // handlers will be terminated asynchronously. - Close() error - - // RemoteAddr returns the remote network address. - RemoteAddr() net.Addr - - // Drain notifies the client this ServerTransport stops accepting new RPCs. - Drain() -} - -// StreamErrorf creates an StreamError with the specified error code and description. -func StreamErrorf(c codes.Code, format string, a ...interface{}) StreamError { - return StreamError{ - Code: c, - Desc: fmt.Sprintf(format, a...), - } -} - -// ConnectionErrorf creates an ConnectionError with the specified error description. -func ConnectionErrorf(temp bool, e error, format string, a ...interface{}) ConnectionError { - return ConnectionError{ - Desc: fmt.Sprintf(format, a...), - temp: temp, - err: e, - } -} - -// ConnectionError is an error that results in the termination of the -// entire connection and the retry of all the active streams. -type ConnectionError struct { - Desc string - temp bool - err error -} - -func (e ConnectionError) Error() string { - return fmt.Sprintf("connection error: desc = %q", e.Desc) -} - -// Temporary indicates if this connection error is temporary or fatal. -func (e ConnectionError) Temporary() bool { - return e.temp -} - -// Origin returns the original error of this connection error. -func (e ConnectionError) Origin() error { - // Never return nil error here. - // If the original error is nil, return itself. - if e.err == nil { - return e - } - return e.err -} - -var ( - // ErrConnClosing indicates that the transport is closing. - ErrConnClosing = ConnectionErrorf(true, nil, "transport is closing") - // ErrStreamDrain indicates that the stream is rejected by the server because - // the server stops accepting new RPCs. - ErrStreamDrain = StreamErrorf(codes.Unavailable, "the server stops accepting new RPCs") -) - -// StreamError is an error that only affects one stream within a connection. -type StreamError struct { - Code codes.Code - Desc string -} - -func (e StreamError) Error() string { - return fmt.Sprintf("stream error: code = %d desc = %q", e.Code, e.Desc) -} - -// ContextErr converts the error from context package into a StreamError. -func ContextErr(err error) StreamError { - switch err { - case context.DeadlineExceeded: - return StreamErrorf(codes.DeadlineExceeded, "%v", err) - case context.Canceled: - return StreamErrorf(codes.Canceled, "%v", err) - } - panic(fmt.Sprintf("Unexpected error from context packet: %v", err)) -} - -// wait blocks until it can receive from ctx.Done, closing, or proceed. -// If it receives from ctx.Done, it returns 0, the StreamError for ctx.Err. -// If it receives from done, it returns 0, io.EOF if ctx is not done; otherwise -// it return the StreamError for ctx.Err. -// If it receives from goAway, it returns 0, ErrStreamDrain. -// If it receives from closing, it returns 0, ErrConnClosing. -// If it receives from proceed, it returns the received integer, nil. -func wait(ctx context.Context, done, goAway, closing <-chan struct{}, proceed <-chan int) (int, error) { - select { - case <-ctx.Done(): - return 0, ContextErr(ctx.Err()) - case <-done: - // User cancellation has precedence. - select { - case <-ctx.Done(): - return 0, ContextErr(ctx.Err()) - default: - } - return 0, io.EOF - case <-goAway: - return 0, ErrStreamDrain - case <-closing: - return 0, ErrConnClosing - case i := <-proceed: - return i, nil - } -} diff --git a/vendor/vendor.json b/vendor/vendor.json index b858129b13..65fefcfee0 100644 --- a/vendor/vendor.json +++ b/vendor/vendor.json @@ -298,96 +298,18 @@ "revision": "b400c2eff1badec7022a8c8f5bea058b6315eed7", "revisionTime": "2016-06-19T19:44:24Z" }, - { - "checksumSHA1": "BoPkYbHfVf/rl8JH6NlxFEqZN/M=", - "path": "golang.org/x/net/http2", - "revision": "6250b412798208e6c90b03b7c4f226de5aa299e2", - "revisionTime": "2016-08-24T22:20:41Z" - }, - { - "checksumSHA1": "EYNaHp7XdLWRydUCE0amEkKAtgk=", - "path": "golang.org/x/net/http2/hpack", - "revision": "6250b412798208e6c90b03b7c4f226de5aa299e2", - "revisionTime": "2016-08-24T22:20:41Z" - }, { "checksumSHA1": "/k7k6eJDkxXx6K9Zpo/OwNm58XM=", "path": "golang.org/x/net/internal/timeseries", "revision": "6250b412798208e6c90b03b7c4f226de5aa299e2", "revisionTime": "2016-08-24T22:20:41Z" }, - { - "checksumSHA1": "yhndhWXMs/VSEDLks4dNyFMQStA=", - "path": "golang.org/x/net/lex/httplex", - "revision": "6250b412798208e6c90b03b7c4f226de5aa299e2", - "revisionTime": "2016-08-24T22:20:41Z" - }, - { - "checksumSHA1": "WpST9lFOHvWrjDVy0GJNqHe+R3E=", - "path": "golang.org/x/net/trace", - "revision": "6250b412798208e6c90b03b7c4f226de5aa299e2", - "revisionTime": "2016-08-24T22:20:41Z" - }, { "checksumSHA1": "8fD/im5Kwvy3JgmxulDTambmE8w=", "path": "golang.org/x/sys/unix", "revision": "a408501be4d17ee978c04a618e7a1b22af058c0e", "revisionTime": "2016-07-03T23:56:20Z" }, - { - "checksumSHA1": "PUYeWv5OXNfb+9eufS8HNddJAjI=", - "path": "google.golang.org/grpc", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "08icuA15HRkdYCt6H+Cs90RPQsY=", - "path": "google.golang.org/grpc/codes", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "sbiWvqfhNKqrDC/nv0W/FaO3EOA=", - "path": "google.golang.org/grpc/credentials", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "3Lt5hNAG8qJAYSsNghR5uA1zQns=", - "path": "google.golang.org/grpc/grpclog", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "T3Q0p8kzvXFnRkMaK/G8mCv6mc0=", - "path": "google.golang.org/grpc/internal", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "rxtneb9jDjKPHNZhC5obfG++6bI=", - "path": "google.golang.org/grpc/metadata", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "4GSUFhOQ0kdFlBH4D5OTeKy78z0=", - "path": "google.golang.org/grpc/naming", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "3RRoLeH6X2//7tVClOVzxW2bY+E=", - "path": "google.golang.org/grpc/peer", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, - { - "checksumSHA1": "yC4HCpGcQ++BIojq47rlc4QNPm4=", - "path": "google.golang.org/grpc/transport", - "revision": "79b7c349179cdd6efd8bac4a1ce7f01b98c16e9b", - "revisionTime": "2016-08-26T22:36:31Z" - }, { "checksumSHA1": "JfVmsMwyeeepbdw4q4wpN07BuFg=", "path": "gopkg.in/fsnotify.v1", From d83879210cb250772d4b42e386cb6c4734b3ebef Mon Sep 17 00:00:00 2001 From: Tom Wilkie Date: Thu, 15 Sep 2016 23:16:03 +0100 Subject: [PATCH 2/2] Switch back to protos over HTTP, instead of GRPC. My aim is to support the new grpc generic write path in Frankenstein. On the surface this seems easy - however I've hit a number of problems that make me think it might be better to not use grpc just yet. The explanation of the problems requires a little background. At weave, traffic to frankenstein need to go through a couple of services first, for SSL and to be authenticated. So traffic goes: internet -> frontend -> authfe -> frankenstein - The frontend is Nginx, and adds/removes SSL. Its done this way for legacy reasons, so the certs can be managed in one place, although eventually we imagine we'll merge it with authfe. All traffic from frontend is sent to authfe. - Authfe checks the auth tokens / cookie etc and then picks the service to forward the RPC to. - Frankenstein accepts the reads and does the right thing with them. First problem I hit was Nginx won't proxy http2 requests - it can accept them, but all calls downstream are http1 (see https://trac.nginx.org/nginx/ticket/923). This wasn't such a big deal, so it now looks like: internet --(grpc/http2)--> frontend --(grpc/http1)--> authfe --(grpc/http1)--> frankenstein Next problem was golang grpc server won't accept http1 requests (see https://groups.google.com/forum/#!topic/grpc-io/JnjCYGPMUms). It is possible to link a grpc server in with a normal go http mux, as long as the mux server is serving over SSL, as the golang http client & server won't do http2 over anything other than an SSL connection. This would require making all our service to service comms SSL. So I had a go a writing a grpc http1 server, and got pretty far. But is was a bit of a mess. So finally I thought I'd make a separate grpc frontend for this, running in parallel with the frontend/authfe combo on a different port - and first up I'd need a grpc reverse proxy. Ideally we'd have some nice, generic reverse proxy that only knew about a map from service names -> downstream service, and didn't need to decode & re-encode every request as it went through. It seems like this can't be done with golang's grpc library - see https://github.com/mwitkow/grpc-proxy/issues/1. And then I was surprised to find you can't do grpc from browsers! See http://www.grpc.io/faq/ - not important to us, but I'm starting to question why we decided to use grpc in the first place? It would seem we could have most of the benefits of grpc with protos over HTTP, and this wouldn't preclude moving to grpc when its a bit more mature? In fact, the grcp FAQ even admits as much: > Why is gRPC better than any binary blob over HTTP/2? > This is largely what gRPC is on the wire. --- cmd/prometheus/config.go | 4 +- .../examples/remote_storage/server.go | 57 ++++++++------ storage/remote/client.go | 57 ++++++++------ storage/remote/remote.go | 8 +- storage/remote/remote.pb.go | 77 ------------------- storage/remote/snappy.go | 34 -------- 6 files changed, 71 insertions(+), 166 deletions(-) delete mode 100644 storage/remote/snappy.go diff --git a/cmd/prometheus/config.go b/cmd/prometheus/config.go index 45042ded97..8d8a9f8fef 100644 --- a/cmd/prometheus/config.go +++ b/cmd/prometheus/config.go @@ -207,8 +207,8 @@ func init() { "The name of the database to use for storing samples in InfluxDB.", ) cfg.fs.StringVar( - &cfg.remote.Address, "experimental.storage.remote.address", "", - "The address of the remote server to send samples to. None, if empty. EXPERIMENTAL.", + &cfg.remote.URL, "experimental.storage.remote.url", "", + "The URL of the remote endpoint to send samples to. None, if empty. EXPERIMENTAL.", ) cfg.fs.DurationVar( diff --git a/documentation/examples/remote_storage/server.go b/documentation/examples/remote_storage/server.go index 2f5bda9eca..ea1e1ea169 100644 --- a/documentation/examples/remote_storage/server.go +++ b/documentation/examples/remote_storage/server.go @@ -15,16 +15,14 @@ package main import ( "fmt" - "io" "io/ioutil" - "log" - "net" - - "golang.org/x/net/context" - "google.golang.org/grpc" + "net/http" + "github.com/golang/protobuf/proto" "github.com/golang/snappy" "github.com/prometheus/common/model" + "golang.org/x/net/context" + "github.com/prometheus/prometheus/storage/remote" ) @@ -46,23 +44,34 @@ func (server *server) Write(ctx context.Context, req *remote.WriteRequest) (*rem return &remote.WriteResponse{}, nil } -type snappyDecompressor struct{} - -func (d *snappyDecompressor) Do(r io.Reader) ([]byte, error) { - sr := snappy.NewReader(r) - return ioutil.ReadAll(sr) -} - -func (d *snappyDecompressor) Type() string { - return "snappy" -} - func main() { - lis, err := net.Listen("tcp", ":1234") - if err != nil { - log.Fatalf("Failed to listen: %v", err) - } - s := grpc.NewServer(grpc.RPCDecompressor(&snappyDecompressor{})) - remote.RegisterWriteServer(s, &server{}) - s.Serve(lis) + http.Handle("/push", AppenderHandler(&server{})) + http.ListenAndServe(":1234", nil) +} + +type WriteServer interface { + Write(context.Context, *remote.WriteRequest) (*remote.WriteResponse, error) +} + +// AppenderHandler returns a http.Handler that accepts proto encoded samples. +func AppenderHandler(s WriteServer) http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + reqBuf, err := ioutil.ReadAll(snappy.NewReader(r.Body)) + if err != nil { + return + } + + var req remote.WriteRequest + if err := proto.Unmarshal(reqBuf, &req); err != nil { + http.Error(w, err.Error(), http.StatusBadRequest) + return + } + + if _, err := s.Write(context.Background(), &req); err != nil { + http.Error(w, err.Error(), http.StatusInternalServerError) + return + } + + w.WriteHeader(http.StatusOK) + }) } diff --git a/storage/remote/client.go b/storage/remote/client.go index 563f47c003..758706a205 100644 --- a/storage/remote/client.go +++ b/storage/remote/client.go @@ -14,38 +14,29 @@ package remote import ( + "bytes" + "fmt" + "net/http" "time" - "golang.org/x/net/context" - "google.golang.org/grpc" - + "github.com/golang/protobuf/proto" + "github.com/golang/snappy" "github.com/prometheus/common/model" ) // Client allows sending batches of Prometheus samples to an HTTP endpoint. type Client struct { - client WriteClient - timeout time.Duration + url string + client http.Client } // NewClient creates a new Client. -func NewClient(address string, timeout time.Duration) (*Client, error) { - conn, err := grpc.Dial( - address, - grpc.WithInsecure(), - grpc.WithTimeout(timeout), - grpc.WithCompressor(&snappyCompressor{}), - ) - if err != nil { - // grpc.Dial() returns immediately and doesn't error when the server is - // unreachable when not passing in the WithBlock() option. The client then - // will continuously try to (re)establish the connection in the background. - // So this will only return here if some other uncommon error occurred. - return nil, err - } +func NewClient(url string, timeout time.Duration) (*Client, error) { return &Client{ - client: NewWriteClient(conn), - timeout: timeout, + url: url, + client: http.Client{ + Timeout: timeout, + }, }, nil } @@ -74,13 +65,29 @@ func (c *Client) Store(samples model.Samples) error { req.Timeseries = append(req.Timeseries, ts) } - ctxt, cancel := context.WithTimeout(context.TODO(), c.timeout) - defer cancel() - - _, err := c.client.Write(ctxt, req) + data, err := proto.Marshal(req) if err != nil { return err } + + buf := bytes.Buffer{} + if _, err := snappy.NewWriter(&buf).Write(data); err != nil { + return err + } + + httpReq, err := http.NewRequest("POST", c.url, &buf) + if err != nil { + return err + } + httpReq.Header.Add("Content-Encoding", "snappy") + httpResp, err := c.client.Do(httpReq) + if err != nil { + return err + } + defer httpResp.Body.Close() + if httpResp.StatusCode/100 != 2 { + return fmt.Errorf("server returned HTTP status %s", httpResp.Status) + } return nil } diff --git a/storage/remote/remote.go b/storage/remote/remote.go index 91c25c886d..ede1d1963e 100644 --- a/storage/remote/remote.go +++ b/storage/remote/remote.go @@ -69,8 +69,8 @@ func New(o *Options) (*Storage, error) { prometheus.MustRegister(c) s.queues = append(s.queues, NewStorageQueueManager(c, nil)) } - if o.Address != "" { - c, err := NewClient(o.Address, o.StorageTimeout) + if o.URL != "" { + c, err := NewClient(o.URL, o.StorageTimeout) if err != nil { return nil, err } @@ -94,9 +94,9 @@ type Options struct { GraphiteAddress string GraphiteTransport string GraphitePrefix string - // TODO: This just being called "Address" will make more sense once the + // TODO: This just being called "URL" will make more sense once the // other remote storage mechanisms are removed. - Address string + URL string } // Run starts the background processing of the storage queues. diff --git a/storage/remote/remote.pb.go b/storage/remote/remote.pb.go index 2d67efabc4..afb55fdfac 100644 --- a/storage/remote/remote.pb.go +++ b/storage/remote/remote.pb.go @@ -21,11 +21,6 @@ import proto "github.com/golang/protobuf/proto" import fmt "fmt" import math "math" -import ( - context "golang.org/x/net/context" - grpc "google.golang.org/grpc" -) - // Reference imports to suppress errors if they are not otherwise used. var _ = proto.Marshal var _ = fmt.Errorf @@ -114,78 +109,6 @@ func init() { proto.RegisterType((*WriteResponse)(nil), "remote.WriteResponse") } -// Reference imports to suppress errors if they are not otherwise used. -var _ context.Context -var _ grpc.ClientConn - -// This is a compile-time assertion to ensure that this generated file -// is compatible with the grpc package it is being compiled against. -const _ = grpc.SupportPackageIsVersion3 - -// Client API for Write service - -type WriteClient interface { - Write(ctx context.Context, in *WriteRequest, opts ...grpc.CallOption) (*WriteResponse, error) -} - -type writeClient struct { - cc *grpc.ClientConn -} - -func NewWriteClient(cc *grpc.ClientConn) WriteClient { - return &writeClient{cc} -} - -func (c *writeClient) Write(ctx context.Context, in *WriteRequest, opts ...grpc.CallOption) (*WriteResponse, error) { - out := new(WriteResponse) - err := grpc.Invoke(ctx, "/remote.Write/Write", in, out, c.cc, opts...) - if err != nil { - return nil, err - } - return out, nil -} - -// Server API for Write service - -type WriteServer interface { - Write(context.Context, *WriteRequest) (*WriteResponse, error) -} - -func RegisterWriteServer(s *grpc.Server, srv WriteServer) { - s.RegisterService(&_Write_serviceDesc, srv) -} - -func _Write_Write_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { - in := new(WriteRequest) - if err := dec(in); err != nil { - return nil, err - } - if interceptor == nil { - return srv.(WriteServer).Write(ctx, in) - } - info := &grpc.UnaryServerInfo{ - Server: srv, - FullMethod: "/remote.Write/Write", - } - handler := func(ctx context.Context, req interface{}) (interface{}, error) { - return srv.(WriteServer).Write(ctx, req.(*WriteRequest)) - } - return interceptor(ctx, in, info, handler) -} - -var _Write_serviceDesc = grpc.ServiceDesc{ - ServiceName: "remote.Write", - HandlerType: (*WriteServer)(nil), - Methods: []grpc.MethodDesc{ - { - MethodName: "Write", - Handler: _Write_Write_Handler, - }, - }, - Streams: []grpc.StreamDesc{}, - Metadata: fileDescriptor0, -} - func init() { proto.RegisterFile("remote.proto", fileDescriptor0) } var fileDescriptor0 = []byte{ diff --git a/storage/remote/snappy.go b/storage/remote/snappy.go deleted file mode 100644 index 5823a1a521..0000000000 --- a/storage/remote/snappy.go +++ /dev/null @@ -1,34 +0,0 @@ -// Copyright 2016 The Prometheus Authors -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package remote - -import ( - "io" - - "github.com/golang/snappy" -) - -type snappyCompressor struct{} - -func (c *snappyCompressor) Do(w io.Writer, p []byte) error { - sw := snappy.NewWriter(w) - if _, err := sw.Write(p); err != nil { - return err - } - return sw.Close() -} - -func (c *snappyCompressor) Type() string { - return "snappy" -}