wifi signalK display

[cepicscepics]

pi@openplotter:~ $ mosquitto_sub -h localhost -p 1884 -t 'vessels/self.environment.depth.belowTransducer'

bash: mosquitto_sub: command not found

pi@openplotter:~ $ mosquitto  -p 1883
1544374155: mosquitto version 1.4.10 (build date Wed, 17 Oct 2018 19:03:03 +0200) starting
1544374155: Using default config.
1544374155: Opening ipv4 listen socket on port 1883.
1544374155: Error: Address already in use

 

  I install mosquitto client:

Code:

sudo apt-get install mosquitto-clients

and, with 1883 port selected in the MQTT SK plugin ..

Code:

pi@openplotter:~ $ mosquitto_sub -h localhost -p 1884 -t 'vessels/self/navigation/speedOverGround'
Error: Connection refused

 
and then..

Code:

pi@openplotter:~ $ mosquitto_sub -h localhost -p 1883 -t 'vessels/self/navigation/speedOverGround'
Connection Refused: not authorised.
Connection Refused: not authorised.
Connection Refused: not authorised.
Connection Refused: not authorised.