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On MUX initialization, the application layer is setup via qcc_install_app_ops(). If this function fails MUX is deallocated and an error is returned. This code path causes a crash before connection has been registered prior into the mux_stopping_data::list for stopping idle frontend conns. To fix this, insert the connection later in qc_init() once no error can occured. The crash was seen on the process closing with SUGUSR1 with a segfault on mux_stopping_process(). This was reproduced using -dMfail. This regression was introduced by the following patch : commit b4d119f0c75ce7c5a977ece18dc975e14f9b460c BUG/MEDIUM: mux-quic: fix crash on H3 SETTINGS emission This should be backported up to 2.7.
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)