[sufianrhazi]

Unfortunately, this approach will not work for clients using Internet Explorer (save for IE 10). WebSockets and EventStreams are fairly new, and not supported across all browsers (both for mobile and non-mobile).

This is why socket.io and its contemporaries have several layers of fallbacks, even going back to infinite iframe/JSONP polling.

[ericb]

Actually, it should work. If you see in the other comments, someone mentioned that rack-stream uses faye-websocket-ruby, which has multiple fallbacks.