In separate terminal windows do the following: Start the broker: mosquitto Start the command line subscriber: mosquitto_sub -v -t ‘test/topic’ Publish test message with the command line publisher: mosquitto_pub -t ‘test/topic’ -m ‘helloWorld’ As well as seeing both the subscriber and publisher connection messages in the broker terminal the following should be printed in the … Read more
You should only need to run MQTT over websockets if you intend to publish/subscribe to messages directly from within webapps (in page). Basically I would run pure MQTT for everything and only add the websockets if you actually need it. For all the non-browser languages the MQTT client libraries only use native MQTT. For Javascript … Read more
Subscribing to # gives you a subscription to everything except for topics that start with a $ (these are normally control topics anyway). It is better to know what you are subscribing to first though, of course, and note that some broker configurations may disallow subscribing to # explicitly.