Dummy socket connections never closed by ManagedFastCgiListener

[kcd83]

I'm not sure if you will want to fix this but by using a Monit socket health check HyperFastCgi was leaving socket connections open.

In monit you can do this

  if failed unixsocket /tmp/hyperfastcgi.socket
    then restart

Or with netcat do

nc -U /tmp/hyperfastcgi.socket

And because neither is valid Fast CGI, or send any data at all, the connection is never closed

ll /proc/`pidof mono`/fd/ | grep socket | wc -l
netstat -ap | grep mono | wc -l

I tried to dig further with an intermediate socket using socat... but couldn't spot anything http://pastebin.com/XacKRCCK

 socat -t2 -d -d -d -d -x -v UNIX-LISTEN:/tmp/test.socket,mode=777,reuseaddr,fork UNIX-CONNECT:/tmp/hyperfastcgi.socket

The native listener did not have this problem. Excluding this monit check resolves my problem so feel free to close this issue if you don't feel it is worth fixing.