HAProxy - Load balancer
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Willy Tarreau 0e231bbd7c BUG/MINOR: mux-h2: properly ignore R bit in GOAWAY stream ID
The stream ID indicated in GOAWAY frames must have its bit 31 (R) ignored
and this wasn't the case. The effect is that if this bit was present, the
GOAWAY frame would mark the last acceptable stream as negative, which is
the default situation (unlimited), thus would basically result in this
GOAWAY frame to be ignored since it would replace a negative last_sid
with another negative one. The impact is thus basically that if a peer
would emit anything non-zero in the R bit, the GOAWAY frame would be
ignored and new streams would still be initiated on the backend, before
being rejected by the server.

Thanks to Haruto Kimura (Stella) for finding and reporting this bug.

This fix needs to be backported to all stable versions.
2026-03-19 07:11:54 +01:00
.github CI: remove redundant "halog" compilation 2026-02-23 11:11:26 +01:00
addons MINOR: promex: export "haproxy_sticktable_local_updates" metric 2026-03-18 11:18:37 +01:00
admin BUG/MINOR: admin: haproxy-reload rename -vv long option 2026-03-08 01:37:56 +01:00
dev DEV: gdb: add a new utility to extract libs from a core dump: libs-from-core 2026-03-18 15:30:39 +01:00
doc MINOR: debug: read all libs in memory when set-dumpable=libs 2026-03-18 15:30:39 +01:00
examples MINOR: mailers: warn if mailers are configured but not actually used 2025-06-27 16:41:18 +02:00
include MINOR: debug: read all libs in memory when set-dumpable=libs 2026-03-18 15:30:39 +01:00
reg-tests MINOR: jwt: Manage ec certificates in jwt_decrypt_cert 2026-03-10 14:58:47 +01:00
scripts SCRIPTS: git-show-backports: add a restart-from-last option 2026-03-09 15:36:05 +01:00
src BUG/MINOR: mux-h2: properly ignore R bit in GOAWAY stream ID 2026-03-19 07:11:54 +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-dev6 2026-03-05 15:55:28 +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 DEV: gdb: add a new utility to extract libs from a core dump: libs-from-core 2026-03-18 15:30:39 +01:00
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-dev6 2026-03-05 15:55:28 +01:00
VERSION [RELEASE] Released version 3.4-dev6 2026-03-05 15:55:28 +01:00

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.