WCF Chat 示例
http://msdn.microsoft.com/zh-cn/library/bb690929(v=vs.90).aspx
WCF / WPF Chat Application
http://www.codeproject.com/Articles/19752/WCF-WPF-Chat-Application
Welcome To WCF Simple multi Chat
http://wcfsimplechat.codeplex.com/
WCF Chat Application
http://www.codeguru.com/csharp/csharp/cs_syntax/componentdevelopment/article.php/c13197/WCF-Chat-Application.htm
A simple peer to peer chat application using WCF netPeerTcpBinding
http://www.codeproject.com/Articles/17321/A-simple-peer-to-peer-chat-application-using-WCF-n