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First of all, this patch is tagged as a bug. But in fact, it only fixes a bug in the 2.2. On the 2.3 and above, it only add the ability to display warnings, when an http-error directive is parsed from a proxy section and when an errorfile directive is parsed from a http-errors section. But on the 2.2, it make sure to display the warning emitted on a content-length mismatch when an errorfile is parsed. The following is only applicable to the 2.2. commit "BUG/MINOR: http-htx: Just warn if payload of an errorfile doesn't match the C-L" (which is only present in 2.2, 2.1 and 2.0 trees, i.e see commit 7bf3d81d3cf4b9f4587 in 2.2 tree), is changing the behavior of `http_str_to_htx` function. It may now emit warnings. And, it is the caller responsibility to display it. But the warning is missing when an 'http-error' directive is parsed from a proxy section. It is also missing when an 'errorfile' directive is parsed from a http-errors section. This bug only exists on the 2.2. On earlier versions, these directives are not supported and on later ones, an error is triggered instead of a warning. Thanks to William Dauchy that spotted the bug. This patch must be backported as far as 2.2.
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)