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HAProxy - Load balancer
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[RELEASE] Released version 3.4-dev3 
Released version 3.4-dev3 with the following main changes :
    - BUILD: ssl: strchr definition changed in C23
    - BUILD: tools: memchr definition changed in C23
    - BUG/MINOR: cfgparse: wrong section name upon error
    - MINOR: cfgparse: Refactor "userlist" parser to print it in -dKall operation
    - BUILD: sockpair: fix build issue on macOS related to variable-length arrays
    - BUG/MINOR: cli/stick-tables: argument to "show table" is optional
    - REGTESTS: ssl: Fix reg-tests curve check
    - CI: github: remove ERR=1 temporarly from the ECH job
    - BUG/MINOR: ech/quic: enable ech configuration also for quic listeners
    - MEDIUM: config: warn if some userlist hashes are too slow
    - MINOR: cfgparse: remove duplicate "force-persist" in common kw list
    - MINOR: sample: also support retrieving fc.timer.handshake without a stream
    - MINOR: tcp-sample: permit retrieving tcp_info from the connection/session stage
    - CLEANUP: connection: Remove outdated note about CO_FL `0x00002000` being unused
    - MINOR: receiver: Dynamically alloc the "members" field of shard_info
    - MINOR: stats: Increase the tgid from 8bits to 16bits
    - BUG/MINOR: stats-file: Use a 16bits variable when loading tgid
    - BUG/MINOR: hlua_fcn: fix broken yield for Patref:add_bulk()
    - BUG/MINOR: hlua_fcn: ensure Patref:add_bulk() is given a table object before using it
    - BUG/MINOR: net_helper: fix IPv6 header length processing
    - MEDIUM: counters: Dynamically allocate per-thread group counters
    - MEDIUM: counters: Remove some extra tests
    - BUG/MEDIUM: threads: Fix binding thread on bind.
    - BUG/MEDIUM: quic: fix ACK ECN frame parsing
    - MEDIUM: counters: mostly revert da813ae4d7
    - BUG/MINOR: http_act: fix deinit performed on uninitialized lf_expr in release_http_map()
    - MINOR: queues: Turn non_empty_tgids into a long array.
    - MINOR: threads: Eliminate all_tgroups_mask.
    - BUG/MEDIUM: queues: Fix arithmetic when feeling non_empty_tgids
    - MEDIUM: thread: Turn the group mask in thread set into a group counter
    - BUG/MINOR: proxy: free persist_rules
    - MEDIUM: stream: refactor switching-rules processing
    - REGTESTS: add test on backend switching rules selection
    - MEDIUM: proxy: do not select a backend if disabled
    - MEDIUM: proxy: implement publish/unpublish backend CLI
    - MINOR: stats: report BE unpublished status
    - MINOR: cfgparse: adapt warnif_cond_conflicts() error output
    - MEDIUM: proxy: force traffic on unpublished/disabled backends
    - MINOR: ssl: Factorize AES GCM data processing
    - MINOR: ssl: Add new aes_cbc_enc/_dec converters
    - REGTESTS: ssl: Add tests for new aes cbc converters
    - MINOR: jwe: Add new jwt_decrypt_secret converter
    - MINOR: jwe: Add new jwt_decrypt_cert converter
    - REGTESTS: jwe: Add jwt_decrypt_secret and jwt_decrypt_cert tests
    - DOC: jwe: Add doc for jwt_decrypt converters
    - MINOR: jwe: Some algorithms not supported by AWS-LC
    - REGTESTS: jwe: Fix tests of algorithms not supported by AWS-LC
    - BUG/MINOR: cfgparse: fix "default" prefix parsing
    - REORG/MINOR: cfgparse: eliminate code duplication by lshift_args()
    - MEDIUM: systemd: implement directory loading
    - CI: github: switch monthly Fedora Rawhide build to OpenSSL
    - SCRIPTS: build-ssl: use QUICTLS_VERSION instead of QUICTLS=yes
    - CI: github: define the right quictls version in each jobs
    - CI: github: fix vtest.yml with "not quictls"
    - MINOR: cli: use srv_drop() when server was created using new_server()
    - BUG/MINOR: server: ensure server is detached from proxy list before being freed
    - BUG/MEDIUM: promex: server iteration may rely on stale server
    - SCRIPTS: build-ssl: clone the quictls branch directly
    - SCRIPTS: build-ssl: fix quictls build for 1.1.1 versions
    - BUG/MEDIUM: log: parsing log-forward options may result in segfault
    - DOC: proxy-protocol: Add SSL client certificate TLV
    - DOC: fix typos in the documentation files
    - DOC: fix mismatched quotes typos around words in the documentation files
    - REORG: cfgparse: move peers parsing to cfgparse-peers.c
    - MINOR: tools: add chunk_escape_string() helper function
    - MINOR: vars: store variable names for runtime access
    - MINOR: vars: implement dump_all_vars() sample fetch
    - DOC: vars: document dump_all_vars() sample fetch
    - BUG/MEDIUM: ssl: fix error path on generate-certificates
    - BUG/MEDIUM: ssl: fix generate-certificates option when SNI greater than 64bytes
    - BUG/MEDIUM: mux-quic: prevent BUG_ON() on aborted uni stream close
    - REGTESTS: ssl: fix generate-certificates w/ LibreSSL
    - SCRIPTS: build: enable symbols in AWS-LC builds
    - BUG/MINOR: proxy: fix deinit crash on defaults with duplicate name
    - BUG/MEDIUM: debug: only dump Lua state when panicking
    - MINOR: proxy: remove proxy_preset_defaults()
    - MINOR: proxy: refactor defaults proxies API
    - MINOR: proxy: simplify defaults proxies list storage
    - MEDIUM: cfgparse: do not store unnamed defaults in name tree
    - MEDIUM: proxy: implement persistent named defaults
2026-01-22 19:02:54 +01:00
.github CI: github: fix vtest.yml with "not quictls" 2026-01-19 13:22:10 +01:00
addons BUG/MEDIUM: promex: server iteration may rely on stale server 2026-01-19 14:24:11 +01:00
admin MEDIUM: systemd: implement directory loading 2026-01-16 09:55:33 +01:00
dev CLEANUP: use the automatic alignment feature 2025-12-09 17:14:58 +01:00
doc [RELEASE] Released version 3.4-dev3 2026-01-22 19:02:54 +01:00
examples MINOR: mailers: warn if mailers are configured but not actually used 2025-06-27 16:41:18 +02:00
include MEDIUM: proxy: implement persistent named defaults 2026-01-22 18:06:42 +01:00
reg-tests REGTESTS: ssl: fix generate-certificates w/ LibreSSL 2026-01-21 16:50:16 +01:00
scripts SCRIPTS: build: enable symbols in AWS-LC builds 2026-01-22 15:25:24 +01:00
src MEDIUM: proxy: implement persistent named defaults 2026-01-22 18:06:42 +01:00
tests TESTS: quic: add unit-tests for QUIC TX part 2025-09-08 14:49:03 +02:00
.cirrus.yml CI: cirrus-ci: bump FreeBSD image to 14-3 2025-10-09 14:06:48 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore MINOR: tevt/dev: Add term_events tool 2025-01-31 10:41:50 +01:00
.mailmap DOC: update Tim's address in .mailmap 2021-09-16 09:14:14 +02:00
.travis.yml MEDIUM: mworker: remove USE_SYSTEMD requirement for -Ws 2024-11-20 12:07:38 +01:00
BRANCHES DOC: clarify the experimental status for certain features 2025-10-17 18:41:13 +02:00
BSDmakefile BUILD: makefile: commit the tiny FreeBSD makefile stub 2023-05-24 17:17:36 +02:00
CHANGELOG [RELEASE] Released version 3.4-dev3 2026-01-22 19:02:54 +01:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2025-04-02 11:12:20 +02:00
INSTALL MINOR: version: mention that it's development again 2025-11-26 16:11:47 +01:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS MAJOR: spoe: Let the SPOE back into the game 2024-05-22 09:04:38 +02:00
Makefile REORG: cfgparse: move peers parsing to cfgparse-peers.c 2026-01-20 17:17:37 +01:00
README.md DOC: change the link to the FreeBSD CI in README.md 2024-06-03 15:21:29 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 3.4-dev3 2026-01-22 19:02:54 +01:00
VERSION [RELEASE] Released version 3.4-dev3 2026-01-22 19:02:54 +01:00

README.md

HAProxy

alpine/musl AWS-LC openssl no-deprecated Illumos NetBSD FreeBSD VTest

HAProxy logo

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:

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.