mirror of
https://git.haproxy.org/git/haproxy.git/
synced 2025-11-28 22:31:06 +01:00
07f88d7582
In the function decoding payload of HEADERS frames, an internal error is returned if the frame length is too large. it cannot exceed the buffer size. The same is true when headers are splitted on several frames. The payload of HEADERS and CONTINUATION frames are merged and the overall size must not exceed the buffer size. However, there is a bug when the current frame is big enough to only have the space for a part of the header of the next frame. Because, in this case, we wait for more data, to have the whole frame header. We don't properly detect that the headers are too large to be stored in one buffer. In fact the test to trigger this error is not accurate. When the buffer is full, the error is reported if the frame length exceeds the amount of data in the buffer. But in reality, an error must be reported when we are unable to decode the current frame while the buffer is full. Because, in this case, we know there is no way to change this state. When the bug happens, the H2 connection is woken up in loop, consumming all the CPU. But the traffic is not blocked for all that. This patch must be backported as far as 2.0.
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)