mqtt通过token连接成功之后立马就断掉了,是什么原因?

""" MQTT==>MQtt初始化
token:LzMT+XLFl5uQ6bDU0o4vUnkdu7k2592cVp1vN6RbXydQNIv1kVYu71h9g0MqQpuwD+UOeF9WOBKYuQQnoXO4DaQ1+y7nRivzD68sd1oozNKFRgKXjIwW5MK+bOVOcrvEXtBkqX0v2Q/AjJ8w2FsKJ0IT9NTZM5FP6NnANRLOx3jxp9RF++dJGtY8rt8YLuEDHyITgdPLTQdoNU6elv2rRJWD7z/5D9P6emABygrZcgJxi2hmX9rfO88sbcIjq69tBYhj3EO/Gy5b7krkq9RFcCRJupbxLMGtCd5McCQdoYgzr5pp7RemH9CH/ceZkOxNXGl74KOrwDvokrL+al/0NFhhe5Rr2/d2sPE9myK/WB63hi/mr+wV+1PTmbzH/VL/tZEvyib5WiGUys17EfA5FlzY1d7EqoE0TVWOqomT+SVLxtp3QkZHxnlac+QlQfxRM5AZ1eySEDo=
groupId:GID_gankao-mdm-group
topic:gankao-mdm-topic/HNPYD22611601669/child
p2pTopic:gankao-mdm-topic/p2p/GID_gankao-mdm-group@@@HNPYD22611601669_parent
serverTopic:gankao_mdm_server_topic
clientId:GID_gankao-mdm-group@@@HNPYD22611601669_child
accessKey:LTAI5t8HBx2Qxdczr27puocC
serverUri:tcp://mqtt-cn-zpr39b17203.mqtt.aliyuncs.com:1883
deviceId:4
expireTime:1691571252554, 2023-08-09 16:54:12
AlarmPingSender com.gankao.dpcmanager D Register alarmreceiver to MqttServiceMqttService.pingSender.GID_gankao-mdm-group@@@HNPYD22611601669_child
GK-DPC管控 com.gankao.dpcmanager D │ MQTT: 连接成功IMqttActionListener：onSuccess: org.eclipse.paho.android.service.MqttTokenAndroid@e9b0eda
GK-DPC管控 com.gankao.dpcmanager D │ MQTT连接成功000000-------》》》》》》66666
GK-DPC管控 com.gankao.dpcmanager D │ MQTT: 连接上了 connectComplete : reconnect:false, serverURI:tcp://mqtt-cn-zpr39b17203.mqtt.aliyuncs.com:1883}
AlarmPingSender com.gankao.dpcmanager D Unregister alarmreceiver to MqttServiceGID_gankao-mdm-group@@@HNPYD22611601669_child
GK-DPC管控 com.gankao.dpcmanager E │ MQTT:0.0断开了0,0 connectionLost:已断开连接 : 已断开连接 (32109) - java.io.EOFException

@MQTT技术支持（加群21713045） mqtt通过token连接成功之后立马就断掉了,是什么原因?之前都没有这个问题,就今天出现了,能解释一下吗?"