摘要：
服务器 开源的服务实现如Openfire 商业实现如gtalk 客户端Libraries C# C# is a simple, modern, general-purpose, object-oriented programming language developed by Microsoft. With a syntax heavily influenced by C++, Delphi, and Java, as well as broad support in Windows tools and the .NET Framework, C# has become a po... 阅读全文