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Aurelien DARRAGON 80aba1d284 BUG/MEDIUM: server/dns: prevent DOWN/UP flap upon resolution timeout or error 
This is a complementary patch to c16eba818 ("BUG/MEDIUM: server/dns:
preserve server's port upon resolution timeout or error").

Indeed, since c16eba818, the port is properly preserved, but unsetting
server's address this way results in server_atomic_sync() function
thinking that we're actually setting a new address and not unsetting
the previous one because addr family is != AF_UNSPEC.

Upon DNS timeout, this could be observed:

[WARNING]  (2588257) : Server http/s1 is going DOWN for maintenance (DNS timeout status). 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
[WARNING]  (2588257) : Server http/s1 ('test1.localhost') is UP/READY (resolves again).

Notice that server timeouts and then immediately resolves again. Of course
in this case case the server's address was properly set to 0, meaning
that the server will not receive any traffic, but it is confusing and
could result in haproxy temporarily thinking that the server is actually
available while it's not.

To properly fix the issue and restore historical behavior, let's
explicitly set inetaddr's family to AF_UNSPEC after fetching original
server's address.

It should be backported in 3.0 with c16eba818.
2024-06-28 11:26:52 +02:00
.github CI: github: do the AWS-LC weekly build with ERR=1 2024-06-14 12:18:32 +02:00
addons MINOR: stats: define stats-file output format support 2024-04-26 10:20:57 +02:00
admin ADMIN: acme.sh: remove the old acme.sh code 2024-05-31 13:37:47 +02:00
dev DEV: flags/show-fd-to-flags: adapt to recent versions 2024-06-25 08:13:24 +02:00
doc DOC: api/event_hdl: small updates, fix an example and add some precisions 2024-06-21 18:12:31 +02:00
examples CLEANUP: assorted typo fixes in the code and comments 2023-11-23 16:23:14 +01:00
include MINOR: activity: make the memory profiling hash size configurable at build time 2024-06-27 18:01:27 +02:00
reg-tests REGTESTS: ssl: activate new SSL reg-tests with AWS-LC 2024-06-17 17:43:22 +02:00
scripts SCRIPTS: git-show-backports: do not truncate git-show output 2024-06-21 15:08:42 +02:00
src BUG/MEDIUM: server/dns: prevent DOWN/UP flap upon resolution timeout or error 2024-06-28 11:26:52 +02:00
tests MINOR: ist: define iststrip() new function 2024-04-26 11:29:25 +02:00
.cirrus.yml CI: FreeBSD: upgrade image, packages 2024-06-04 11:19:00 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore CONTRIB: Add vi file extensions to .gitignore 2023-06-02 18:14:34 +02:00
.mailmap DOC: update Tim's address in .mailmap 2021-09-16 09:14:14 +02:00
.travis.yml CI: travis-ci: temporarily disable arm64 builds 2021-08-07 07:28:15 +02:00
BRANCHES DOC: fix some spelling issues over multiple files 2021-01-08 14:53:47 +01:00
BSDmakefile BUILD: makefile: commit the tiny FreeBSD makefile stub 2023-05-24 17:17:36 +02:00
CHANGELOG [RELEASE] Released version 3.1-dev1 2024-06-14 16:04:18 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL DOC: INSTALL: minimum AWS-LC version is v1.22.0 2024-06-14 12:06:03 +02:00
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: ssl: move the SNI selection code in ssl_clienthello.c 2024-06-13 16:48:17 +02:00
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 3.1-dev1 2024-06-14 16:04:18 +02:00
VERSION [RELEASE] Released version 3.1-dev1 2024-06-14 16:04:18 +02:00

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.