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When a STREAM frame is retransmitted, a check is performed to remove range of data already acked from it. This is useful when STREAM frames are duplicated and splitted to cover different data ranges. The newly retransmitted frame contains only unacked data. This process is performed similarly in qc_dup_pkt_frms() and qc_build_frms(). Refactor the code into a new function named qc_stream_frm_is_acked(). It returns true if frame data are already fully acked and retransmission can be avoided. If only a partial range of data is acknowledged, frame content is updated to only cover the unacked data. This patch does not have any functional change. However, it simplifies retransmission for STREAM frames. Also, it will be reused to fix retransmission for empty STREAM frames with FIN set from the following patch : BUG/MEDIUM: quic: handle retransmit for standalone FIN STREAM As such, it must be backported prior to it.
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.