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6770259083
Till now it was still needed to write rules to eliminate bad behaving H2 clients, while most of the time it would be desirable to just be able to set a threshold on the level of anomalies on a connection. This is what this patch does. By setting a glitches threshold for frontend and backend, it allows to automatically turn a connection to the error state when the threshold is reached so that the connection dies by itself without having to write possibly complex rules. One subtlety is that we still have the error state being exclusive to the parser's state so this requires the h2c_report_glitches() function to return a status indicating if the threshold was reached or not so that processing can instantly stop and bypass the state update, otherwise the state could be turned back to a valid one (e.g. after parsing CONTINUATION); we should really contemplate the possibility to use H2_CF_ERROR for this. Fortunately there were very few places where a glitch was reported outside of an error path so the changes are quite minor. Now by setting the front value to 1000, a client flooding with short CONTINUATION frames is instantly stopped. |
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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)