Not detecting disconnection

[gunnbr]

Gthx often get disconnected for some reason, but doesn't realize it's disconnected, so it doesn't try to reconnect or just exit so it can be restarted.

This is a critical bug that needs to be fixed ASAP since it leads to long stretches of downtime.

[gunnbr]

I discovered that the problem is that there's no keep alive built in to IrcDotNet. Apparently Twisted, the IRC library I was using for the python version of gthx, has a ping/pong IRC heartbeat turned on by default.

I'm still debating the right way to do this, but for the moment, I made my own custom version of IrcDotNet and turned on TCP keepalive to fix the problem for the moment. I will open an issue with the IrcDotNet team to see what they think is the best fix: TCP keep alive or ping pong IRC heartbeat so I can implement it there more permanently.