The jQuery Socket is a server agnostic JavaScript library that provides a socket for browser-based applications that need two-way communication with servers and aims to utilize a full duplex connection for modern web application development.
All you need to do to use the jQuery Socket is to prepare a event-driven server and to implement some server-side code to run transports which application will use. Whether cross-domain connections, old browsers and mobile devices are supported or not is depending on transports.
The jQuery Socket project is developed and maintained by Donghwan Kim. If you are interested, please subscribe to the discussion group.