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Instead of switching the stream to HTX mode, the request channel is only
reset (the request buffer is xferred to the mux) and the SF_IGNORE flag is
set on the stream. This flag prevent any processing in case of abort. Once
the upgrade confirmed, the flag is removed, in stream_upgrade_from_cs().
It is only the first part of the fix. The next one ("BUG/MAJOR: mux-h1:
Properly handle TCP to H1 upgrades") is also required. Both rely on the
following series of patches :
* MEDIUM: http-ana: Do nothing in wait-for-request analyzer if not htx
* MINOR: stream: Add a function to validate TCP to H1 upgrades
* MEDIUM: mux-h1: Add ST_READY state for the H1 connections
* MINOR: mux-h1: Wake up instead of subscribe for reads after H1C creation
* MINOR: mux-h1: Try to wake up data layer first before calling its wake callback
* MINOR: stream-int: Take care of EOS in the SI wake callback function
* BUG/MINOR: stream: Don't update counters when TCP to H2 upgrades are performed
This fix is specific for 2.4. No backport needed.
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)