Olivier Houchard a254a37ad7 MEDIUM: streams: Add the ability to retry a request on L7 failure.
When running in HTX mode, if we sent the request, but failed to get the
answer, either because the server just closed its socket, we hit a server
timeout, or we get a 404, 408, 425, 500, 501, 502, 503 or 504 error,
attempt to retry the request, exactly as if we just failed to connect to
the server.

To do so, add a new backend keyword, "retry-on".

It accepts a list of keywords, which can be "none" (never retry),
"conn-failure" (we failed to connect, or to do the SSL handshake),
"empty-response" (the server closed the connection without answering),
"response-timeout" (we timed out while waiting for the server response),
or "404", "408", "425", "500", "501", "502", "503" and "504".

The default is "conn-failure".
2019-05-04 10:19:56 +02:00
2019-03-26 05:40:51 +01:00
2019-03-26 05:40:51 +01:00
2019-03-26 05:40:51 +01:00

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
  - 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)
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