Connect with JavaScript

Below is an example using MQTT.js Open external link with the TOKEN authentication mode configured on a broker. The example assumes you have Node.js Open external link v16 or higher installed on your system.

Make sure to set the following environmental variables before running the example:

1. BROKER_URI (e.g. mqtts://YOUR-BROKER.YOUR-NAMESPACE.cloudflarepubsub.com)
2. BROKER_TOKEN with a valid auth token
3. BROKER_TOPIC to publish to - for example, hello/world

Before running the example, make sure to install the MQTT library:

Copy the following example as example.js and run it with node example.js.