I'm using Apache + mod_proxy for providing a chat application with Ejabberd. It's using Bosh (XMPP over HTTP).
The issue is when a user closes its browser, Apache keeps the connection open with the back-end server for a while (about 1 minute).
It annoys me because Ejabberd can realize that the user is gone only when the socket is closed... so the user's interlocutor doesn't know what's happening during that time + Ejabberd's own timeout. I can change Ejabberd's timeout, but I couldn't figure how to reduce the closing time on Apache side.
See netstat's output before the browser is closed :
Browser -> Apache mod_proxy
tcp 0 0 127.0.1.1:80 127.0.0.1:52361 TIME_WAIT
tcp 0 0 127.0.1.1:80 127.0.0.1:52380 ESTABLISHED
tcp 0 0 127.0.0.1:52380 127.0.1.1:80 ESTABLISHED
Apache mod_proxy -> Ejabberd
tcp 0 0 0.0.0.0:5280 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:5280 127.0.0.1:40972 ESTABLISHED
tcp 0 0 127.0.0.1:40953 127.0.0.1:5280 TIME_WAIT
tcp 0 0 127.0.0.1:40972 127.0.0.1:5280 ESTABLISHED
And after the browser is closed, during dozens of second to about 1 minute...
Browser -> Apache mod_proxy
tcp 0 0 127.0.1.1:80 127.0.0.1:52361 TIME_WAIT
tcp 1 0 127.0.1.1:80 127.0.0.1:52380 CLOSE_WAIT
tcp 0 0 127.0.0.1:52380 127.0.1.1:80 FIN_WAIT2
Apache mod_proxy -> Ejabberd
tcp 0 0 0.0.0.0:5280 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:5280 127.0.0.1:40972 ESTABLISHED
tcp 0 0 127.0.0.1:40953 127.0.0.1:5280 TIME_WAIT
tcp 0 0 127.0.0.1:40972 127.0.0.1:5280 ESTABLISHED
My Apache configuration :
<VirtualHost *:80>
ProxyRequests On
ProxyPass /http-bind/ http://localhost:5280/http-bind/
ServerName desktop
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
RewriteEngine Off
[...]
</VirtualHost>
