I'm planning my server loop for a simple networked game I want to make.
Using RakPeerInterface (which sounds like a reliable UDP implementation from what I've read), I want to be able to tell, within 3 seconds, if a player has disconnected from the game through unexpected means (client crash, disconnect, task-manager-terminate).
I think there is a raknet feature somewhere that does exactly this, but I haven't found it yet.