[置顶] 基于MQTT+WCF 实现Web 接口转即时服务

-MQTT Client
-MQTT Broker
-WCF(Base Winform)
-WebControler (Base Asp.net MVC)

1. 场景描述
   有App+Web API 实现的系统，无法实现即时服务提醒
2. 整体模型
   
3. 解决思路
   通过使用MQTT Broker的快速搭建，开发即时服务器应用 SocketAPP1，Android/IOS 其他应用使用MQTT连接服务器，只处理订阅信息。SocketAPP1 开发WCF服务，外部能调用。更正原来Web API 增加调用WCF 服务进行通知服务。SokcetApp 和Web App并在一个服务器上，Socket APP不处理数据层

代码实例：
***Android MQTT Content
NotifyClient***

try {
    mesenger=(Messenger)intent.getExtras().get("Handle");
    String uuid=UUID.randomUUID().toString();
    uuid.replace("-","");
    uuid=uuid.substring(0,23);
    client = new NettyClient(uuid
    );
    client.setListener(new PrintingListener());
    client.connect("***.***.48.239", 1883);
    subscribe(topic);
    client.publish("keepalive","keepalive");
    mTimer.schedule(new TimerTask() {
        @Override
        public void run() {
            try {
                client.publish("keepalive","keepalive");
                Log.d("Keepalive","keepalive");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }, 0, 10 * 1000);
    beInteractive();
  //  client.disconnect();
    Message msg = Message.obtain();
    msg.arg1=2;


    try {
        msg.obj="MQTT 服务已退出";
        mesenger.send(msg);
    }catch (Exception ex)
    {
        ex.printStackTrace();
    }
}
catch (Exception ex)
{
   // Toast.makeText(null,ex.getMessage(),Toast.LENGTH_SHORT).show();
    ex.printStackTrace();
}

***Winform MQTT broker Winform WCF
GnatMQ***

//MQTT Broker
 uPLibrary.Networking.M2Mqtt.MqttBroker server=new uPLibrary.Networking.M2Mqtt.MqttBroker();
            server.Start();

    //启动WCF 服务
    m_Host =new ServiceHost(serviceMqtt);
            m_Host.Open();
            Console.WriteLine("WCF Server has opened .");

Web APP

//调用WCF 通知
  ServiceReference1.ServiceMQTTClient s = new ServiceReference1.ServiceMQTTClient();