SignalR/SignalR — pull request #1708 by davidfowl (2013-03-18 05:45:18+00:00)
Title: Ensure that group tokens are unique per connection id.

- Added the connection id to the groups token.
- Verify that it's the same connection id when validating groups.
- Added test to verify that you can't listen to messages if you have
the groups token alone.

#1506