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When an HTTP lua service is started, headers are consumed before calling the script. When it was initialized, the headers were stored in a lua array, thus they can be removed from the HTX message because the lua service will no longer access them. But it is a problem with bodyless messages because the EOM flag is lost. Indeed, once the headers are consumed, the message is empty and the buffer is reset, included the flags. Now, the headers are not immediately consumed. We will skip them if applet:receive() or applet:getline(). This way, the EOM flag is preserved. At the end, when the script is finished, all output data are consumed, thus this remains safe. It is a 2.4-specific bug. No backport is needed.
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)