This section provides an overview of what signalr is, and why a developer might want to use it.

It should also mention any large subjects within signalr, and link out to the related topics. Since the Documentation for signalr is new, you may need to create initial versions of those related topics.

It's worth noting that at while in these functions you still have access to the Context, therefore you can get the connectionId and identify who/what has disconnected.

Remember, a user can have **more then one connectionId **, so think about how you want to store all the connection IDs for one user