tree 94362bcbc9304fc2b54466410c6895c6a8d81ae7
parent 85835eeb43e17917648b04b73f4f980d17744451
author Olivier Houchard <ohouchard@haproxy.com> 1563455348 +0200
committer Christopher Faulet <cfaulet@haproxy.com> 1563522888 +0200

BUG/MEDIUM: checks: Don't attempt to receive data if we already subscribed.

tcpcheck_main() might be called while we already attempted to subscribe, and
failed. There's no point in trying to call rcv_buf() again, and failing
would lead to us trying to subscribe again, which is not allowed.

This should be backported to 2.0 and 1.9.

(cherry picked from commit 0ba6c85a0b87d4c11940e8dacacdee8bf1005fa3)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>