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87b09668be
With HTTP/2, we'll have to support multiplexed streams. A stream is in
fact the largest part of what we currently call a session, it has buffers,
logs, etc.
In order to catch any error, this commit removes any reference to the
struct session and tries to rename most "session" occurrences in function
names to "stream" and "sess" to "strm" when that's related to a session.
The files stream.{c,h} were added and session.{c,h} removed.
The session will be reintroduced later and a few parts of the stream
will progressively be moved overthere. It will more or less contain
only what we need in an embryonic session.
Sample fetch functions and converters will have to change a bit so
that they'll use an L5 (session) instead of what's currently called
"L4" which is in fact L6 for now.
Once all changes are completed, we should see approximately this :
L7 - http_txn
L6 - stream
L5 - session
L4 - connection | applet
There will be at most one http_txn per stream, and a same session will
possibly be referenced by multiple streams. A connection will point to
a session and to a stream. The session will hold all the information
we need to keep even when we don't yet have a stream.
Some more cleanup is needed because some code was already far from
being clean. The server queue management still refers to sessions at
many places while comments talk about connections. This will have to
be cleaned up once we have a server-side connection pool manager.
Stream flags "SN_*" still need to be renamed, it doesn't seem like
any of them will need to move to the session.
102 lines
3.6 KiB
C
102 lines
3.6 KiB
C
/*
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* include/types/peers.h
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* This file defines everything related to peers.
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*
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* Copyright 2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _TYPES_PEERS_H
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#define _TYPES_PEERS_H
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <common/appsession.h>
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#include <common/config.h>
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#include <common/mini-clist.h>
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#include <common/regex.h>
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#include <common/sessionhash.h>
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#include <common/tools.h>
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#include <eb32tree.h>
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struct peer_session {
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struct shared_table *table; /* shared table */
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struct peer *peer; /* current peer */
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struct stream *stream; /* current transport stream */
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unsigned int flags; /* peer session flags */
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unsigned int statuscode; /* current/last session status code */
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unsigned int update; /* current peer acked update */
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unsigned int pushack; /* last commited update to ack */
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unsigned int lastack; /* last acked update */
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unsigned int lastpush; /* last pushed update */
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unsigned int confirm; /* confirm message counter */
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unsigned int pushed; /* equal to last pushed data or to table local update in case of total push
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* or to teaching_origin if teaching is ended */
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unsigned int reconnect; /* next connect timer */
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unsigned int teaching_origin; /* resync teaching origine update */
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struct peer_session *next;
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};
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struct shared_table {
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struct stktable *table; /* stick table to sync */
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struct task *sync_task; /* main sync task */
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struct peer_session *local_session; /* local peer session */
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struct peer_session *sessions; /* peer sessions list */
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unsigned int flags; /* current table resync state */
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unsigned int resync_timeout; /* resync timeout timer */
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struct shared_table *next; /* next shared table in list */
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};
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struct peer {
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int local; /* proxy state */
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char *id;
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struct peers *peers;
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struct {
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const char *file; /* file where the section appears */
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int line; /* line where the section appears */
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} conf; /* config information */
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time_t last_change;
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struct sockaddr_storage addr; /* peer address */
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struct protocol *proto; /* peer address protocol */
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struct xprt_ops *xprt; /* peer socket operations at transport layer */
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void *sock_init_arg; /* socket operations's opaque init argument if needed */
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struct peer *next; /* next peer in the list */
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};
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struct peers {
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int state; /* proxy state */
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char *id; /* peer section name */
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struct peer *remote; /* remote peers list */
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struct proxy *peers_fe; /* peer frontend */
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struct {
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const char *file; /* file where the section appears */
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int line; /* line where the section appears */
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} conf; /* config information */
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struct shared_table *tables; /* registered shared tables */
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time_t last_change;
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struct peers *next; /* next peer section */
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int count; /* total of peers */
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};
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extern struct peers *peers;
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#endif /* _TYPES_PEERS_H */
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