连接成功后会立马出现这种错误，network read failed, rc: -708. MQTT Disconnect.

[luoyunyi]

[zcprotocol_best-t:2023-07-25T14:54:57.559] Info [QCloudThread(4121592944)][mqttcommapi.c log_handler 478]: ERR|2023-07-25 14:54:57|HAL_TLS_mbedtls.c|HAL_TLS_Read(378): cloud_iot_network_tls_read failed: 0x0000

[zcprotocol_best-t:2023-07-25T14:54:57.559] Info [QCloudThread(4121592944)][mqttcommapi.c log_handler 478]: ERR|2023-07-25 14:54:57|mqtt_client_yield.c|qcloud_iot_mqtt_yield(246): network read failed, rc: -708. MQTT Disconnect.

[zcprotocol_best-t:2023-07-25T14:54:57.560] Info [QCloudThread(4121592944)][mqttcommapi.c log_handler 478]: ERR|2023-07-25 14:54:57|mqtt_client_yield.c|_handle_disconnect(68): disconnect MQTT for some reasons..

[zcprotocol_best-t:2023-07-25T14:54:57.560] Info [QCloudThread(4121592944)][mqttcommapi.c event_handler 495]: MQTT disconnect.
[zcprotocol_best-t:2023-07-25T14:54:57.560] Warning [QCloudThread(4121592944)][mqttcommapi.c ReadChannelThread 878]: It will attempting reconnect: -105
[zcprotocol_best-t:2023-07-25T14:54:58.564] Warning [QCloudThread(4121592944)][mqttcommapi.c ReadChannelThread 774]: into disconnect status, 0,1
[zcprotocol_best-t:2023-07-25T14:54:58.566] Info [QCloudThread(4121592944)][mqttcommapi.c log_handler 478]: ERR|2023-07-25 14:54:58|device.c|iot_device_info_init(30): device info has been initialized.

FUNC: qcloud_iot_mqtt_init L#259 server iotcloud-mqtt.gz.tencentdevices.com:8883
[zcprotocol_best-t:2023-07-25T14:54:58.712] Info [QCloudThread(4121592944)][mqttcommapi.c log_handler 478]: ERR|2023-07-25 14:54:58|mqtt_client.c|IOT_MQTT_Construct(111): mqtt connect with id: dDm1s failed: -117