url

http://www.ruchee.com/code/c/gtk/eclipse.html

http://wiki.ubuntu.org.cn/

Java观察者模式: http://jmacan.iteye.com/blog/667858            http://blog.sina.com.cn/s/blog_52fea7b60100t3je.html

webrtc:              http://www.cnblogs.com/huaping-audio/archive/2011/06/11/2078129.html

消息推送：http://mazhi4562qq.iteye.com/blog/1449234

http://blog.csdn.net/wbw1985/article/details/5502272