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fc_http_major and bc_http_major sample fetches return the major digit of the HTTP version used, respectively, by the frontend and the backend connections, based on the mux. However, in reality, "2" is returned if the H2 mux is detected, otherwise "1" is inconditionally returned, regardless the mux used. Thus, if called for a raw TCP connection, "1" is returned. To fix this bug, we now get the multiplexer flags, if there is one, to be sure MX_FL_HTX is set. I guess it was made this way on purpose when the H2 multiplexer was introduced in the 1.8 and with the legacy HTTP mode there is no other solution at the connection level. Thus this patch should be backported as far as 2.2. For the 2.0, it must be evaluated first because of the legacy HTTP mode.
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)