A library for real-time web communication

ASP.NET SignalR is a library to add real-time web functionality to have server-side code push content to the connected client(s) as it happens, in real-time. SignalR will use WebSockets under the covers when it's available, and gracefully fallback to other techniques and technologies when it isn't, while application code stays the same.

To test, open multiple browsers side-by-side . If you post a message on one browser, then it will show up on all instances.