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qc_snd_buf returned a size_t which means that it was never negative despite its documentation. Thus the caller who checked for this was never informed of a sendto error. Clean this by changing the return value of qc_snd_buf() to an integer. A 0 is returned on success. Every other values are considered as an error. This commit should be backported up to 2.6. Note that to not cause malfunctions, it must be backported after the previous patch : 906b0589546b700b532472ede019e5c5a8ac1f38 MINOR: quic: explicitely ignore sendto error This is to ensure that a sendto error does not cause send to be interrupted which may cause a stalled transfer without a proper retry mechanism. The impact of this bug seems null as caller explicitely ignores sendto error. However this part of code seems to be subject to strange issues and it may fix them in part. It may be of interest for github issue #1808. (cherry picked from commit 6715cbf97f5142f18748d1575632082d3b0fbe91) Signed-off-by: Willy Tarreau <w@1wt.eu>
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)