tree b3425aac0574f40e746499efa14c378add1d800b
parent f4bda993dde4f7414a59d48cb3b009a29456d4ba
author Olivier Houchard <ohouchard@haproxy.com> 1554471012 +0200
committer Willy Tarreau <w@1wt.eu> 1556957996 +0200
encoding latin1

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".