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HAProxy - Load balancer
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Released version 3.4-dev12 with the following main changes :
- SCRIPTS: announce-release: add a link to the OpenTelemetry filter
- BUG/MEDIUM: servers: Only requeue servers if they are up
- MINOR: tinfo: store the number of committed extra streams in the tgroup
- MINOR: connection: add a function to calculate elastic streams limit
- MINOR: mux-h2: consider the elastic streams limit on frontend
- MINOR: lb: make LB initialization even more declarative
- BUG/MINOR: cfgparse-listen: do not emit extraneous line in rule order warnings
- CLEANUP: tree-wide: fix typos in non user-visible comments in 15 files
- CLEANUP: h1/htx: fix a few typos in warning, debug and trace messages
- BUG/MINOR: mux-h1: only check h1s if not NULL
- BUG/MINOR: http-fetch: fix smp_fetch_hdr_ip()'s handling of brackets for IPv6
- BUG/MINOR: http-fetch: make http_first_req() check for HTTP first
- BUG/MINOR: http-act: set-status() must check the response message, not the request
- BUG/MINOR: tools: fix memory leak in env_expand() error path
- BUG/MINOR: auth: free user groups on error paths in userlist_postinit()
- BUG/MINOR: uri-auth: avoid leaks on initialization error
- BUG/MINOR: cache: fix memory leak in parse_cache_rule error path
- BUG/MINOR: cfgcond: make KQUEUE check for GTUNE_USE_KQUEUE not GTUNE_USE_EPOLL
- BUG/MINOR: mqtt: connack parser returns MQTT_NEED_MORE_DATA on unknown property
- BUG/MINOR: mqtt: connect parser uses wrong bit field for TOPIC_ALIAS_MAXIMUM
- BUG/MINOR: mqtt: connack parser uses wrong bit for SUBSCRIPTION_IDENTIFIERS_AVAILABLE
- BUG/MINOR: mqtt: fix PUBLISH flags validation that want all bits to be set
- CLEANUP: http_htx: rename inner 'type' to 'ptype' to avoid variable shadowing
- CLEANUP: mux-h2: fix minor output debugging format issues
- CLEANUP: http-rules: fix a few '&' vs '&&' checks for clarity
- CLEANUP: auth: remove undeclared auth_resolve_groups() from auth.h
- CLEANUP: cache: remove redundant res_htx assignment in http_cache_io_handler()
- CLEANUP: channel: remove bogus and unused definition of channel_empty()
- CLEANUP: flt_http_comp: remove duplicate rate limit and CPU usage checks
- CLEANUP: mqtt: remove duplicate MQTT_FN_BIT_USER_PROPERTY in CONNECT fields
- BUG/MINOR: uri-auth: fix possible null-deref in latest fix for leaks
- BUG/MEDIUM: tasks: Keep the TASK_RUNNING flag until queued
- CLEANUP: mqtt: fix spelling of shared_subscription_available
- CLEANUP: regex: pre-initialize error variable in regex_comp() to calm analysis
- BUILD: compiler: fix redefinition of __nonstring
- CLEANUP: defaults: adjust MAX_THREADS multiplier number in comment
- CLEANUP: src/cpuset.c: fix missing return in functions returning int
- REGTESTS: Use ${tmpdir} instead of hardcoded /tmp/
- REGTESTS: Don't try to use real nameservers for testcases
- CLEANUP: tree-wide: fix typos in non user-visible comments in 3 more files
- MINOR: cli: improve forward compatibility for show fd
- DOC: management: document the <tgid>/<fd> form of show fd
- CLEANUP: tree-wide: fix more typos and outdated explanations in comments
- BUG/MEDIUM: dict: hold read lock while incrementing refcount in dict_insert
- BUG/MEDIUM: http-client: Only consume input buffer when hc one is empty
- BUG/MINOR: xprt_qstrm: fix conflicting prototype
- REORG: mux_quic: use newer qcm prefix for legacy qmux files
- MINOR: mux_quic: use qcm prefix for mux callbacks
- MINOR: mux_quic: use qcm prefix for mux functions
- MINOR: mux_quic: use qcm prefix for traces functions/structs
- MINOR: mux_quic: rename qstrm files to qmux
- MINOR: mux_quic: remove qstrm naming in QUIC MUX
- MINOR: connection: rename QMux related flags
- MINOR: xprt_qmux: use qmux instead of qstrm naming
- MINOR: trace: implement source alias
- MEDIUM: mux_quic: rename qmux traces to qcm
- MINOR: sample: add a generic reverse converter
- MINOR: sample: add a reverse_dom converter
- DOC: proxy-protocol: clarify UDP usage
- BUILD: 51d.c: cleanup, fix preprocessor ifdefs
- CLEANUP: tree-wide: fix typos in user-invisible files
- CLEANUP: htx: Adjust numbering of HTX blocks' types in the description
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HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
Please refer to the following files depending on what you're looking for:
- INSTALL for instructions on how to build and install HAProxy
- BRANCHES to understand the project's life cycle and what version to use
- LICENSE for the project's license
- CONTRIBUTING for the process to follow to submit contributions
The more detailed documentation is located into the doc/ directory:
- doc/intro.txt for a quick introduction on HAProxy
- doc/configuration.txt for the configuration's reference manual
- doc/lua.txt for the Lua's reference manual
- doc/SPOE.txt for how to use the SPOE engine
- doc/network-namespaces.txt for how to use network namespaces under Linux
- doc/management.txt for the management guide
- doc/regression-testing.txt for how to use the regression testing suite
- doc/peers.txt for the peers protocol reference
- doc/coding-style.txt for how to adopt HAProxy's coding style
- doc/internals for developer-specific documentation (not all up to date)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.