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This bug arrived with this commit: "MINOR: quic: Add reusable cipher contexts for header protection" haproxy could crash because of missing cipher contexts initializations for the header protection and draft-v2 Initial secrets. This was due to the fact that these initialization both for RX and TX secrets were done outside of qc_new_isecs(). The role of this function is definitively to initialize these cipher contexts in addition to the derived secrets. Indeed this function is called by qc_new_conn() which initializes the connection but also by qc_conn_finalize() which also calls qc_new_isecs() in case of a different QUIC version was negotiated by the peers from the one used by the client for its first Initial packet. This was reported by "v2" QUIC interop test with at least picoquic as client. Must be backported to 2.6.
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)