一个IM开源项目LiteTalk http://blog.csdn.net/visualwind/article/details/6086631 http://blog.sina.com.cn/s/blog_54b5ea250101n2kt.html http://blog.csdn.net/abcpanpeng/article/details/7367486 http://my.oschina.net/pzh0819/blog/113946