20.07 node MQTT

Node MQTT

npm install mqtt --save

I am going from this document on npm.

So in my understanding how MQTT works is kinda like websockets or The theory. You idly listen on one end to something, and whenever the server publishes the message, everything will react to it.

https://test.mosquitto.org has a free MQTT server, which is nice for testing without your own server. Don’t send sensitive data, anybody could be listening.

test.mosquitto.org Info

MQTT is a message - subscribe connection. and you can subscribe on a specific topic. # is a wildcard to receive everything.

• gotta make a quick file to test what MQTT topics are in use. To avoid communicating with someone else.
  • There are a lot of people who spam the public server. I should make my own topic that no one uses to be able to safely use it.
  • over MQTT everyone can see what you are sending. So sending your Token over MQTT isn’t safe. Unless you have your own MQTT broker.