IE10 implements the W3C WebSocket API

What are web sockets: 

WebSockets enable Web applications to deliver real-time notifications and updates in the browser. The browser’s original HTTP request-response model presented several limitations and was not  designed for real-time scenarios.  WebSockets enable browsers to open a bidirectional, full-duplex communication channel with services. Each side can then use this channel to immediately send data to the other. Now, sites from social networking and games to financial sites can deliver better real-time scenarios, ideally using same markup across different browsers.

The WebSocket specification which is developed as part of the HTML5 initiative introduced the WebSocket JavaScript interface, which defines a full-duplex single socket connection over which messages can be sent between client and server. The WebSocket standard simplifies much of the complexity around bi-directional web communication and connection management.

In Windows 8 Consumer Preview and Server Beta, IE10 and all other Microsoft WebSocket client and server features now support the final version of the IETF WebSocket Protocol. In addition, IE10 implements the W3C WebSocket API Candidate Recommendation. WebSockets are stable and ready for developers to start creating innovative applications and services.
The updated Flipbook demo uses the latest version of the API and protocol for a more complex example that allows you to experiment with latency and performance differences between WebSockets and HTTP polling.

For more info on Details of Connecting to a WebSocket Server and Programming Connecting to a WebSocket Server, read about it in this post by IEBlog

 

Learn more about WebSockets in these posts and videos:

 

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