[Bug 48037] mod_proxy_http does not handle asynchronous keepalive close events correctly

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=48037

--- Comment #15 from vin01 <vi...@protonmail.ch> ---
I am getting intermittent failures with errors like :-

[Sun Jul 31 10:53:17.579566 2016] [proxy_http:error] [pid 42678] (103)Software
caused connection abort: [client <ip>:<port>] AH01102: error reading status
line from remote server <ip>:<port>, referer: <url>


Other than this i also keep getting errors like :-

[Sun Jul 31 21:06:11.629845 2016] [proxy_http:error] [pid 19153]
(104)Connection reset by peer: [client <client_ip>:<port>] AH01095: prefetch
request body failed to <backend_ip>:<port> (<backend_ip>) from <client_ip> (),
referer: <url>

it happens for like 1 request in a 1000.

I am running httpd 2.4.18 on CentOS 6.8 and Back-end is jetty 9.3 which has
support for HTTP/1.0, HTTP/1.1.

I added "SetEnv proxy-nokeepalive 1" to disable keepalives, but i am still
having these errors.

Should i also add?

"SetEnv force-proxy-request-1.0 1"

May I know why it is suggested to force use http/1.0 when the issue is just
with keepalives?

Any other suggestions to avoid these errors?

Thanks.

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