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A recent fix was introduced to ensure unsent data are deleted when a QUIC MUX stream releases its qc_stream_desc instance. This is necessary to ensure all used buffers will be liberated once all ACKs are received. This is implemented by the following patch : commit ad6b13d3177945bf6a85d6dc5af80b8e34ea6191 (quic-dev/qns) BUG/MEDIUM: quic: remove unsent data from qc_stream_desc buf Before this patch, buffer removal was done only on ACK reception. ACK handling is only done in order from the oldest one. A BUG_ON() statement is present to ensure this assertion remains valid. This is however not true anymore since the above patch. Indeed, after unsent data removal, the current buffer may be empty if it did not contain yet any sent data. In this case, it is not the oldest buffer, thus the BUG_ON() statement will be triggered. To fix this, simply remove this BUG_ON() statement. It should not have any impact as it is safe to remove buffers in any order. Note that several conditions must be met to trigger this BUG_ON crash : * a QUIC MUX stream is destroyed before transmitting all of its data * several buffers must have been previously allocated for this stream so it happens only for transfers bigger than bufsize * latency should be high enough to delay ACK reception This must be backported wherever the above patch is (currently targetted to 2.6).
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)