Eclipse Projects Broker: connection details & online test

Endpoints and ports

About Eclipse Projects Broker

mqtt.eclipseprojects.io is a public MQTT sandbox maintained by the Eclipse Foundation for the Eclipse IoT community. Its WebSocket listeners use the standard ports 80 and 443, which helps when testing from networks that block uncommon ports.

Highlights

• WebSockets on ports 80 / 443
• No sign-up
• Community-maintained

Limitations

• Fully public
• No authentication
• Best-effort availability

Connect with code

mosquitto_sub -h mqtt.eclipseprojects.io -p 1883 -t 'testmqtt/eclipse/#' -v

import mqtt from 'mqtt';

const client = mqtt.connect('wss://mqtt.eclipseprojects.io:443/mqtt');

client.on('connect', () => {
  client.subscribe('testmqtt/eclipse/#');
  client.publish('testmqtt/eclipse/hello', 'Hello from MQTT.js');
});

client.on('message', (topic, payload) => {
  console.log(topic, payload.toString());
});

Having trouble? See common MQTT connection errors or learn how to test an MQTT broker step by step.