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For now, for a stream, request analyzers are set at 2 stages. The first one is when the stream is created. The session's listener analyzers, if any, are set on the request channel. In addition, some HTTP analyzers are set for HTX streams (AN_REQ_WAIT_HTTP and AN_REQ_HTTP_PROCESS_FE). The second one is when the backend is set on the stream. At the stage, request analyzers are updated using the backend settings. It is an issue for client applets because there is no listener attached to the stream. In addtion, it may have no specific/dedicated backend. Thus, several request analyzers are missing. Among others, the HTTP analyzers for HTTP applets. The HTTP client is the only one affected for now. To fix the bug, when a stream is created without a listener, we use the frontend to set the request analyzers. Note that there is no issue with the response channel because its analyzers are set when the server connection is established. This patch may be backported to all stable versions. Because only the HTTP client is affected, it must at least be backported to 2.5. It is related to the issue #1593.
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)