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HAProxy - Load balancer
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Olivier Houchard d759e60a32 MEDIUM: check: Revamp the way the protocol and xprt are determined 
Storing the protocol directly into the check was not a good idea,
because the protocol may not be determined until after a DNS resolution
on the server, and may even change at runtime, if the DNS changes.
What we can, however, figure out at start up, is the net_addr_type,
which will contain all that we need to find out which protocol to use
later.
Also revert the changes made by commit 07edaed191
that would not reuse the server xprt if a different alpn is set for
checks. The alpn is just a string, and should not influence the choice
of the xprt.
We'll now make sure to use the server xprt, unless an address is
provided, in which case we'll use whatever xprt matches that address, or
a port, in which case we'll assume we want TCP, and use check_ssl to
know whetver we want the SSL xprt or not.
Now that the check contains all that is needed to know which protocol to
look up, always just use that when creating a new check connection if it
is the default check connection, and for now, always use TCP when a
tcp-check or http-check connect rule is used (which means those can't be
used for QUIC so far).

This should hopefully fix github issue #3324.
2026-04-08 18:41:48 +02:00
.github CI: github: add the architecture to the cache key for vtest2 2026-04-08 11:16:59 +02:00
addons MINOR: promex: export "haproxy_sticktable_local_updates" metric 2026-03-18 11:18:37 +01:00
admin CLEANUP: fix typos and spelling in comments and documentation 2026-03-30 09:24:19 +02:00
dev CLEANUP: fix typos and spelling in comments and documentation 2026-03-30 09:24:19 +02:00
doc DOC: config: Fix two typos in the server param "healthcheck" description 2026-04-03 15:56:57 +02:00
examples MINOR: ssl/log: add keylog format variables and env vars 2026-04-01 16:28:49 +02:00
include MEDIUM: check: Revamp the way the protocol and xprt are determined 2026-04-08 18:41:48 +02:00
reg-tests REGTESTS: add a test for "filter-sequence" directive 2026-04-03 12:10:32 +02:00
scripts CI: VTest build with git clone + cache 2026-04-07 18:35:23 +02:00
src MEDIUM: check: Revamp the way the protocol and xprt are determined 2026-04-08 18:41:48 +02:00
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-dev8 2026-04-03 11:46:05 +02:00
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 MINOR: xprt_qstrm: define new xprt module for QMux protocol 2026-04-02 14:02:04 +02:00
README.md DOC: remove openssl no-deprecated CI image 2026-02-19 10:39:23 +01:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 3.4-dev8 2026-04-03 11:46:05 +02:00
VERSION [RELEASE] Released version 3.4-dev8 2026-04-03 11:46:05 +02:00

README.md

HAProxy

alpine/musl AWS-LC 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.