TCP keep-alive to determine if client disconnected in netty

Question

I\'m trying to determine if a client has closed a socket connection from netty. Is there a way to do this?

Answer 1

It depends on your protocol that you use ontop of netty. If you design it to support ping-like messages, you can simply send those messages. Besides that, netty is only a pretty thin wrapper around TCP.

Also see this SO post which describes isOpen() and related. This however does not solve the keep-alive problem.