13 September, 2011
By Simone D'Amico
SockJS is a WebSocket emulation library written in Javascript. It provides a cross-browser API which creates cross-domain communication channel between the browser and the web server.
SockJS supports cross-domain communication. You can also isolate SockJS server and host it on a different domain than your main web site.
SockJS has the following goals:
- Simple browser-side and server-side APIs, as close to WebSocket API as possible.
- Well documented scaling and load balancing techniques.
- Transports must fully support cross-domain communication.
- Transports must fall back gracefully in case of restrictive proxies.
- Connection establishment should be fast.
- No Flash on the client side,
Javascript only.
- Client-side Javascript must be reasonably well tested.
- Additionally the server side code should be simple, in order to lower the cost of writing servers for different languages.
