I am attempting to get websockets working in my dev environment:
Even on Windows 8 / .NET 4.5 it was not working initially, but with these additional tips I finally got it working.
Install websocket support
-> Turn Windows features on or off
-> Internet Information Services
-> World Wide Web Services
-> Application Development Features
-> WebSocket Protocol
in web.config, under appSettings, add this setting:
SignalR automatically negotiates websockets, it does not have to be specified and nothing special is needed in code.