As part of our ongoing experimentation with the HTML5 WebSocket proposed standard for duplex communication between web browsers and servers, we have prototyped a WebSocket protocol implementation based on Microsoft technologies. The prototype consists of a WCF service and a Silverlight client with an HTML bridge to JavaScript implemented in jQuery. You can read more about it at You can also check out a sample web chat application based on the prototype at Let us know what you think!

Tomasz Janczuk
WCF Team