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Willy Tarreau 32b51cdf30 BUG/MINOR: config: reject configs using HTTP with bufsize >= 256 MB 
As seen in commit 5ef965606 ("BUG/MINOR: lua: use strlcpy2() not
strncpy() to copy sample keywords"), configs with large values of
tune.bufsize were not practically usable since Lua was introduced,
regardless of the machine's available memory.

In addition, HTX encoding already limits block sizes to 256 MB, thus
it is not technically possible to use that large a buffer size when
HTTP is in use. This is absurdly high anyway, and for example Lua
initialization would take around one minute on a 4 GHz CPU. Better
prevent such a config from starting than having to deal with bug
reports that make no sense.

The check is only enforced if at least one HTX proxy was found, as
there is no techincal reason to block it for configs that are solely
based on raw TCP, and it could still be imagined that some such might
exist with single connections (e.g. a log forwarder that buffers to
cover for the storage I/O latencies).

This should be backported to all HTX-enabled versions (2.0 and above).
2021-09-03 16:15:29 +02:00
.github CI: Github Actions: temporarily disable BoringSSL builds 2021-09-02 17:32:43 +02:00
addons BUILD: ot: add argument for default value to vars_get_by_name() 2021-09-03 14:21:40 +02:00
admin MINOR: systemd: remove the ExecStartPre line in the unit file 2021-08-20 23:36:45 +02:00
dev CLEANUP: dev/flags: remove useless test in the stdin number parser 2021-04-03 15:29:10 +02:00
doc [RELEASE] Released version 2.5-dev6 2021-09-03 15:19:56 +02:00
examples MEDIUM: proxy: remove long-broken 'option http_proxy' 2021-07-18 19:35:32 +02:00
include MINOR: vars: make vars_get_by_* support an optional default value 2021-09-03 12:08:54 +02:00
reg-tests MINOR: vars: make the vars() sample fetch function support a default value 2021-09-03 12:08:54 +02:00
scripts BUILD: adopt script/build-ssl.sh for OpenSSL-3.0.0beta2 2021-08-25 05:16:00 +02:00
src BUG/MINOR: config: reject configs using HTTP with bufsize >= 256 MB 2021-09-03 16:15:29 +02:00
tests CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
.cirrus.yml CI: introduce scripts/build-vtest.sh for installing VTest 2021-05-18 10:48:30 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore DOC: lua-api: Add documentation about lua filters 2021-08-15 20:56:44 +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
CHANGELOG [RELEASE] Released version 2.5-dev6 2021-09-03 15:19:56 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS CONTRIB: move spoa_example out of the tree 2021-04-21 09:39:06 +02:00
Makefile BUILD: globally enable -Wundef 2021-08-30 10:16:30 +02:00
README DOC: create a BRANCHES file to explain the life cycle 2019-06-15 22:00:14 +02:00
ROADMAP DOC: update the outdated ROADMAP file 2019-06-15 21:59:54 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 2.5-dev6 2021-09-03 15:19:56 +02:00
VERSION [RELEASE] Released version 2.5-dev6 2021-09-03 15:19:56 +02:00

README 

The HAProxy documentation has been split into a number of different files for
ease of use.

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)