tree 3666cdc7b95569335957ded928dc2507f72ec00b
parent 9042465b70a36536bdf079a0413cffb8ad4027c9
author Christopher Faulet <cfaulet@haproxy.com> 1722519729 +0200
committer Willy Tarreau <w@1wt.eu> 1725550062 +0200
encoding latin1

BUG/MEDIUM: http-ana: Report error on write error waiting for the response

When we are waiting for the server response, if an error is pending on the
frontend side (a write error on client), it is handled as an abort and all
regular response analyzers are removed, except the one responsible to
release the filters, if any. However, while it is handled as an abort, the
error is not reported, as usual, via http_reply_and_close() function. It is
an issue because in that, the channels buffers are not reset.

Because of this bug, it is possible to block a stream infinitely. The
request side is waiting for the response side and the response side is
blocked because filters must be released and this cannot be done because
data remain blocked in channels buffers.

So, in that case, calling http_reply_and_close() with no message is enough
to unblock the stream.

This patch must be backported as far as 2.8.

(cherry picked from commit 0ba6202796fe24099aeff89a5a4b83af99fc027b)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit aa43ed1719048dfee36594e13f15c2ccd397c9db)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 4c3bc8df9cee26f9bc276532d8345f3857e064a2)
Signed-off-by: Willy Tarreau <w@1wt.eu>