http://mqtt.org/
http://baike.baidu.com/view/9956531.htm
http://www.cnblogs.com/caca/p/mqtt.html
http://www.oschina.net/p/mqtt
http://mqtt.org/
http://baike.baidu.com/view/9956531.htm
http://www.cnblogs.com/caca/p/mqtt.html
http://www.oschina.net/p/mqtt