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cs_close() and cs_drain_and_close() are called to close a conn-stream.
cs_shutr() and cs_shutw() are called with the appropriate modes. But the
conn-stream is not released at this stage. However the flags are
reset. Thus, after a cs_close(), we loose shutdown flags. If cs_close() is
performed several times, it is a problem. And indeed, it is possible. On one
hand, the stream-interface may close the conn-stream. On the other end, the
stream always closes it when it is released.
It is a problem for the H1 multiplexer. Because the conn-stream flags are
reset, the shutr and shutw are performed twice. For a delayed shutdown, the
dirty mode is used instead of the normal one because the last call to
h1_shutw() overwrite H1C flags set by the first call. This leads to dirty
shutdowns while normal ones are required. At the end, it is possible to
truncate the messages.
This bug was revealed by the commit
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| .github | ||
| addons | ||
| admin | ||
| dev | ||
| doc | ||
| examples | ||
| include | ||
| reg-tests | ||
| scripts | ||
| src | ||
| tests | ||
| .cirrus.yml | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .travis.yml | ||
| BRANCHES | ||
| CHANGELOG | ||
| CONTRIBUTING | ||
| INSTALL | ||
| LICENSE | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| ROADMAP | ||
| SUBVERS | ||
| VERDATE | ||
| VERSION | ||
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)