[Bug 62816] MaxConnectionsPerChild kills active connections

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=62816

--- Comment #1 from Phil O <as...@linuxace.com> ---
Seeing this same problem in CentOS 7.6 on Apache 2.4.38.  In our case, it
actually cuts off file transfers midstream whenever the MaxConnectionsPerChild
is hit.  We had it set to 1000, so it was hard to pinpoint, but if I set it to
1, a 200K file is cutoff after 24K on every request.  Looking at a packet
capture, the server sends a FIN:

09:34:40.081002 IP 10.16.130.112.80 > 10.16.130.5.38958: Flags [FP.], seq
23169:24617, ack 187, win 30016, options [nop,nop,TS val 4108912187 ecr
3977453522], length 1448: HTTP

When the file transfers successfully, we reach the end:

09:34:39.972768 IP 10.16.130.112.80 > 10.16.130.5.38956: Flags [P.], seq
231681:241445, ack 187, win 30016, options [nop,nop,TS val 4108912079 ecr
3977453414], length 9764: HTTP
09:34:40.011109 IP 10.16.130.112.80 > 10.16.130.5.38956: Flags [F.], seq
241445, ack 188, win 30016, options [nop,nop,TS val 4108912117 ecr 3977453452],
length 0

We are also using the Event MPM.

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