MQTT丢失了连接

Question

我正在尝试构建一个接收位置的纬度和经度的简单应用程序，然后返回该位置的地址。该应用程序有2部分：Android应用程序和Analytic应用程序。客户端的Android应用程序将向CloudMQTT发送纬度和长度，Analytic应用程序将从CloudMQTT接收纬度和长度，分析然后将结果发送到客户端的Android应用程序VIA TCP。但问题是，当我将runResultTCPAnalytic函数（通过TCP将分析应用程序的结果发送到客户端的函数）添加到run函数时，会出现MQTT连接丢失ERROR。但是当我排除sendResult函数并且只显示云上的内容时，连接运行正常。可以有人向我解释。谢谢。抱歉我的英语不好，我不是母语人士。 这是我的MQTT代码：

public void run() {        
        try {
            mqttClient = new MqttClient(broker, "AnalyticApp");
            MqttConnectOptions connOpts = new MqttConnectOptions();
            connOpts.setCleanSession(false);
            connOpts.setUserName(username);
            connOpts.setPassword(password.toCharArray());

            noticeBoard.append("Connecting to " + broker + "\n");

            String topic = "Assignment";
            mqttClient.setCallback(new MqttCallback() {

                public void messageArrived(String topic, MqttMessage message) throws Exception {
                    String data = new String(message.getPayload());
                    String[] field = data.split(",");

                    boolean isDuplicate = false;
                    Device newDevice = new Device(field);
                    for (int index = 0; index < devices.size(); index++) {
                        if (devices.get(index).id.equals(field[0])) {
                            isDuplicate = true;
                            devices.remove(index);
                            devices.add(index, newDevice);
                        }
                    }

                    if (!isDuplicate || devices.isEmpty()) {
                        devices.add(newDevice);
                    }
                    noticeBoard.append(" " + "\n");

                    noticeBoard.setText("");
                    for (int index=0;index<devices.size();index++) {
                        do {
                        GeoCoding temp=new GeoCoding();
                        devices.get(index).resultaddress=temp.getAddress(devices.get(index).latitude+","+devices.get(index).longitude);
                        }while(devices.get(index).resultaddress==null);             
                        }
                    for (int index = 0; index < devices.size(); index++) {
                        noticeBoard.append(devices.get(index).id + "\t"
                                + devices.get(index).longitude + "\t"
                                + devices.get(index).latitude + "\t"
                                + devices.get(index).portTCP + "\t"
                                +devices.get(index).resultaddress+"\n"
                                );
                        sendResultTCPAnalytic(devices.get(0).id, 3333, devices.get(0).resultaddress);

                    }
                }

                public void connectionLost(Throwable cause) {
                    noticeBoard.append("Connection to broker lost!" + cause.getMessage() + "\n");
                }

                public void deliveryComplete(IMqttDeliveryToken token) {
                }

            });


            while (true) {
                mqttClient.connect(connOpts);
                mqttClient.subscribe(topic, 1);
            }

        } catch (MqttException me) {
            noticeBoard.append(me.getMessage() + "\n");
        }
    }

这是我的sendResultTCPAnalytic代码：

public void sendResultTCPAnalyticServer(String host, int port,String result) throws Exception
    {       

        Socket socketOfClient;
        try
        {

            socketOfClient = new Socket(host, port); /*CREATE SOCKET*/
            OutputStream os = socketOfClient.getOutputStream();
                    try
                   {
                        String dataToSend = null;
                        if ((result) != null)
                        {
                            dataToSend = result;
                            os.write(dataToSend.getBytes());
                        } else
                        {

                            socketOfClient.close();

                        }
                        socketOfClient.close();
                    } catch (IOException e)
                    {
                        e.printStackTrace();
                    }         
        } catch (UnknownHostException e)
        {
            e.printStackTrace();
        }
    }

这是错误：

Connection to broker lost!MQTT Exception