I investigated PR53420
(https://issues.apache.org/bugzilla/show_bug.cgi?id=53420), see my last
reply there.
Using proxy in combination with ProxyErrorOverride shows a hang until
the proxy timeout fires.
The hang happens, when the proxy calls ap_discard_request_body to
discard the origin server *response* body.
For 2.2 the call to ap_discard_request_body immediately gets a brigade
with two buckets. The first bucket is the origin server response body,
the second an EOS. For 2.4/trunk the call gets a brigade with one bucket
- the origin server response body - then reads a second brigade, which
times out and only then returns the EOS bucket.
Any hints how to proceed?
Reproduction for 2.4 and trunk is trivial:
Listen 8080
Listen 8081
<VirtualHost *:8080>
ProxyErrorOverride on
ProxyPass / http://localhost:8081/ connectiontimeout=5
</VirtualHost>
and retrieve http://localhost/8080/notexist
Regards,
Rainer
