Eclipse Paho MQTT Client 封装 (javascript)，实现重连、队列和日志功能，支持node module引入；
该例服务端使用阿里云MQTT；另外推荐使用MQTT.js：The MQTT client for Node.js and the browser
// for client mqtt.connect(MQTT_CONIFG, onConnected, onReceived); mqtt.sendToAll(110, {}); mqtt.sendToUser(YourDevID, 110, {}); // for server 使用阿里云的[MQTT 物联套件](https://help.aliyun.com/document_detail/42419.html) //=> @see test.html