Quickstart

import paho.mqtt.client as mqtt

def on_connect(client, userdata, flags, rc):
    print("Connected!")
    client.subscribe("test/topic")

def on_message(client, userdata, message):
    print(f"Received: {message.payload.decode()}")

client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message

client.connect("localhost", 1883, 60)
client.loop_forever()

const mqtt = require('mqtt');

const client = mqtt.connect('mqtt://localhost:1883');

client.on('connect', () => {
  console.log('Connected!');
  client.subscribe('test/topic');
  client.publish('test/topic', 'Hello HiveMQ!');
});

client.on('message', (topic, message) => {
  console.log(`Received: ${message.toString()}`);
});