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From time to time, users complain to get 400-Bad-request responses for totally valid CONNECT requests. After analysis, it is due to the H1 parser performs an exact match between the authority and the host header value. For non-CONNECT requests, it is valid. But for CONNECT requests the authority must contain a port while it is often omitted from the host header value (for default ports). So, to be sure to not reject valid CONNECT requests, a basic authority validation is now performed during the message parsing. In addition, the host header value is normalized. It means the default port is removed if possible. This patch should solve the issue #1761. It must be backported to 2.6 and probably as far as 2.4.
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)