Is there any framework that supports Websocket and falls back to other methods when it is not supported on client's browser?

Question

I was doing AJAX implementation and would like to use Websocket when the client web browser supports it. Is there any frameworks that supports Websocket but falls-back to other methods when it detects the client side doesn't support Websocket.

Answer 1

There is also Atmosphere

http://atmosphere.dev.java.net

which support both client and server.

Answer 2

Yes sort of see www.kaazing.org

Kaazing Gateway supports all major browsers (Firefox version 1.5 and higher, Internet Explorer version 5.5 and higher, Safari version 3.0 and higher, Opera version 9.5 and higher, and Google Chrome version 0.2 and higher).