b70921f2c1
On shut, truncated HTX messages were not properly handled by the H2 multiplexer. Depending on how data were emitted, a chunked HTX message without the 0-CRLF could be considered as full and an empty data with ES flag set could be emitted instead of a RST_STREAM(CANCEL) frame. In the H2 multiplexer, when a shut is performed, an HTX message is considered as truncated if more HTX data are still expected. It is based on the presence or not of the H2_SF_MORE_HTX_DATA flag on the H2 stream. However, this flag is set or unset depending on the HTX extra field value. This field is used to state how much data that must still be transferred, based on the announced data length. For a message with a content-length, this assumption is valid. But for a chunked message, it is not true. Only the length of the current chunk is announced. So we cannot rely on this field in that case to know if a message is full or not. Instead, we must rely on the HTX start-line flags to know if more HTX data are expected or not. If the xfer length is known (the HTX_SL_F_XFER_LEN flag is set on the HTX start-line), it means that more data are always expected, until the end of message is reached (the HTX_FL_EOM flag is set on the HTX message). This is true for bodyless message because the end of message is reported with the end of headers. This is also true for tunneled messages because the end of message is received before switching the H2 stream in tunnel mode. This patch must be backported as far as 2.8.
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
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)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.