I want to to create a simple client/server chat application.
The idea is that when one client sends a message to the server the server informs the other clients with the change.
What is the best way to do so without having to deal with firewall problems?
Can it be done with web services over http?
WCF service with
wsHttpBindingorbasicHttpBindingplays nice with firewalls. The major problem you will face is the server informing clients for which modifying some firewall settings might be necessary.