1643982811: Received PINGREQ from ThingsBoard_gateway
1643982811: Sending PINGRESP to ThingsBoard_gateway
armbian@sbcspg:~$ mosquitto_sub -h localhost -t test
armbian@sbcspg:~$ mosquitto_pub -h localhost -t test -m "hello world"
armbian@sbcspg:~$ mosquitto_sub -h localhost -t test
hello world