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During HEADERS frames decoding, if a frame is too large to fit in a buffer, an internal error is reported and a RST_STREAM is emitted. On the other hand, we wait to have an empty rxbuf to decode the frame because we cannot retry a failed HPACK decompression. When we are decoding headers, it is valid to return an error if dbuf buffer is full because no data can be blocked in the rxbuf (which hosts the HTX message). However, during the trailers decoding, it is possible to have some data not sent yet for the current stream in the rxbug and data for another stream fully filling the dbuf buffer. In this case, we don't decode the trailers but we must not return an error. We must wait to empty the rxbuf first. Now, a HEADERS frame is considered as too large if the dbuf buffer is full and if the rxbuf is empty (the HTX message to be accurate). This patch should fix the issue #2382. It must be backported to all stable versions.
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)