Ensure the broker's URL is correct (ws://for unsecured,wss://for secured) and the port is open. For self-hosted brokers, confirm WebSocket support is enabled and accessible, considering any firewall or network restrictions. Can MQTT.js support mutual (two-way) SSL/TLS authentication in bro...
updates the default MQTT listener on port1883, which is what we’ve been connecting to so far.1883is the standard unencrypted MQTT port. Thelocalhostportion of the line instructs Mosquitto to only bind this port to the localhost interface, so it’s not accessible external...
SSL/TLS might not always be an option and, in some cases, might not be desired. On such occasions, authentication is presented as a cleartext username and password, which are sent by the client to the server -- this, as part of the CONNECT/CONNACK packet sequence. In addition, some...
There are different types of port numbers: Well Known Ports (0 to 1023), Registered Ports (1024 to 49151) and Dynamic or Private Ports (49152 to 65535).