if(typeof(EventSource)!=="undefined")
{
// Yes! Server-sent events support!
// Some code.....
}
else
{
// Sorry! No server-sent events support..
}
http://caniuse.com/eventsource
http://blog.samshull.com/2010/10/ajax-push-in-ios-safari-and-chrome-with.html
http://www.tutorialspoint.com/html5/html5_server_sent_events.htm
http://axul.net/ws/
http://weblog.bocoup.com/javascript-eventsource-now-available-in-firefox/ (emulated)
http://sapid.sourceforge.net/ssetest/
http://dsheiko.com/weblog/html5-and-server-sent-events/
! http://www.html5rocks.com/en/tutorials/eventsource/basics/
http://dsheiko.com/weblog/websockets-vs-sse-vs-long-polling/
http://dsheiko.com/weblog/real-time-web-application-architecture/
http://html5doctor.com/methods-of-communication/
CORS (miblo) http://www.nczonline.net/blog/2010/05/25/cross-domain-ajax-with-cross-origin-resource-sharing/