tree c7542dfbfec92b0606298f3dde6ae22fcfb1dcf9
parent 917f95027d79379f9acff0bb4797144a818fe355
author Willy Tarreau <w@1wt.eu> 1623910128 +0200
committer Willy Tarreau <w@1wt.eu> 1623947040 +0200
encoding latin1

MINOR: mux-h2: obey http-ignore-probes during the preface

We're seeing some browsers setting up multiple connections and closing
some to just keep one. It looks like they do this in case they'd
negotiate H1. This results in aborted prefaces and log pollution about
bad requests and "PR--" in the status flags.

We already have an option to ignore connections with no data, it's called
http-ignore-probes. But it was not used by the H2 mux. However it totally
makes sense to use it during the preface.

This patch changes this so that connections aborted before sending the
preface can avoid being logged.

This should be backported to 2.4 and 2.3 at least, and probably even
as far as 2.0.

(cherry picked from commit ee4684f65b6ea627e34395d254daf7971d3ed90f)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit c23d6d11bc7014b58feed96e91aa55aff3d03a2e)
[wt: s/HA_ATOMIC_INC/HA_ATOMIC_ADD]
Signed-off-by: Willy Tarreau <w@1wt.eu>