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When an HTX stream is waiting for a request or a response, it reports an error
(400 for the request or 502 for the response) if a parsing error is reported by
the mux (HTX_FL_PARSING_ERROR). The mux-h1 uses this error, among other things,
when the headers are too big to be analyzed at once. But the mux-h2 doesn't. So
the stream must also report an error if the multiplexer is unable to emit all
headers at once. The multiplexers must always emit all the headers at once
otherwise it is an error.
There are 2 ways to detect this error:
* The end-of-headers marker was not received yet _AND_ the HTX message is not
empty.
* The end-of-headers marker was not received yet _AND_ the multiplexer have
some data to emit but it is waiting for more space in the channel's buffer.
Note the mux-h2 is buggy for now when HTX is enabled. It does not respect the
reserve. So there is no way to hit this bug.
This patch must be backported to 1.9.
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 - 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)