mosquitto_sub returns zero on success, or non-zero on error. If the connection is refused by the broker at the MQTT level, then the exit code is the CONNACK reason code. If another error occurs, the exit code is a libmosquitto return value. ...
之前用WinSCP连接华为云服务器传输文件的时候没有出现过问题，但是现在连接实验室电脑的时候报“网络错误...
Lately, my connections that used to work are being refused: mosquitto_pub -h broker.hivemq.com -p 1883 -m “event,lite” -t BJH_ESP32/cmd Connection error: Connection Refused: not authorised. mosquitto_sub -h broker.hivemq.com -t BJH_ESP32 Connection error: Connection Refused: not auth...
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