AT+GTSSLFILE="CERTFILE",1553        加载CA证书  CERTIFICATE

AT+GTSSLFILE="KEYFILE",1700         加载CA证书密钥  PRIVATE KEY


AT+GTSSLFILE="TRUSTFILE",1229      加载本地信任证书  GlobalSign



[12:26:18.867]发→◇AT+MQTTUSER=1,"xxgt1de/l718","Nz89vlclv2kBD9z5"
□
[12:26:18.880]收←◆AT+MQTTUSER=1,"xxgt1de/l718","Nz89vlclv2kBD9z5"
OK

[12:27:05.539]发→◇AT+MQTTOPEN=1,"xxgt1de.mqtt.iot.bj.baidubce.com",1884,1,80,2
□
[12:27:05.548]收←◆AT+MQTTOPEN=1,"xxgt1de.mqtt.iot.bj.baidubce.com",1884,1,80,2
OK

[12:27:08.332]收←◆
+MQTTOPEN: 1,1

AT+MQTTSUB=1,"L718",1

[12:52:20.722]发→◇at+mqttpub=1,"L718",1,1,"11"
□
[12:52:20.726]收←◆at+mqttpub=1,"L718",1,1,"11"
OK

[12:52:21.129]收←◆
+MQTTPUB: 1,1


断开服务器：at+mqttclose=1

AT+MQTTUNSUB=1,"L718"