Practical Internet of Things with JavaScript

Raspberry Pi MQTTS client

Now we are going to work with the MQTTS client of Node.js.

On the desktop of the Raspberry Pi 3, create a folder named pi-client. Open a terminal and cd into the pi-client folder.

The first thing we are going to do is create a package.json file. From inside the pi-client folder, run the following:

$ npm init

Then answer the question as applicable. Once you are done with that, next we will install MQTT.js (https://www.npmjs.com/package/mqtt) on the Raspberry Pi 3. Run the following:

$ npm install mqtt -save  

Once this installation is also done, the final package.json will look the same as this:

{    "name": "pi-client",    "version": "0.1.0",    "description": "",    "main": "index.js",    "scripts": {        "start": "node index.js"