SignalR/SignalR — pull request #642 by akoeplinger (2012-09-04 19:20:13+00:00)
Title: Added NullClientProxy to hubs for better error messages

When someone creates an instance of a hub themselves, the properties like `.Caller` or `.Client` will not work obviously. This PR provides a better error message when someone tries to access the properties on a self-instantiated hub.