Can a connectionId be a part of multiple groups in hub class

Question

Can I call Groups.Add on the same connectionid but for 2 different groups and if i broadcast a certain message to either group the connectionid added will get both messages?

Answer 1

Yes. This is exactly what JabbR, the flagship test application for SignalR, does. It uses groups to represent "rooms" and, in JabbR, a user can be in N rooms. You can see the exact details of that implementation here.