MQTT 掉线了， 是什么原因？[阿里云消息队列MQ]

2022-12-29 00:32:40 [c.d.d.m.producer.LabelPlugMqttClient:58]-[INFO] ====> connect success Connection lost (32109) – java.net.SocketException: Connection reset at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:190) at java.lang.Thread.run(Thread.java:748) Caused by: java.net.SocketException: Connection reset at java.net.SocketInputStream.read(SocketInputStream.java:210) at java.net.SocketInputStream.read(SocketInputStream.java:141) at java.net.SocketInputStream.read(SocketInputStream.java:224) at java.io.DataInputStream.readByte(DataInputStream.java:265) at org.eclipse.paho.client.mqttv3.internal.wire.MqttInputStream.readMqttWireMessage(MqttInputStream.java:92) at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:137) … 1 more 2022-12-29 05:25:11 [c.d.d.m.producer.LabelPlugMqttClient:58]-[INFO] ====> connect success