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MQTT Essentials - A Lightweight IoT Protocol

You're reading from MQTT Essentials - A Lightweight IoT Protocol Send and receive messages with the MQTT protocol for your IoT solutions.

Product type Paperback

Published in Apr 2017

Publisher Packt

ISBN-13 9781787287815

Length 280 pages

Edition 1st Edition

Languages

Python

Tools

MQTT

Concepts

IoT Development

Author (1):

Gaston C. Hillar

View More author details

Table of Contents (8) Chapters

Preface

1. Lightweight Messaging with MQTT 3.1.1 and Mosquitto FREE CHAPTER

2. Securing an MQTT Mosquitto Server

3. Controlling a Drone with Python

4. Interacting with Sensors in Java

5. Controlling Home Automation in JavaScript

6. Interacting with Actuators in Swift

A. Exersise Answers

Chapter 5. Controlling Home Automation in JavaScript

In this chapter, we will write JavaScript code to control home automation with MQTT messages. We will write code that will be able to run on web browsers. In addition, we will use Node.js to write code that runs on IoT boards, receives MQTT messages and controls devices wired to the boards. We will:

Understand the requirements to control home automation with MQTT and WebSockets
Define the topics and commands to control home automation
Enable WebSockets for a Mosquitto server
Understand the Eclipse Paho JavaScript asynchronous client
Create an HTML 5 web page to control LEDs
Publish messages to target remote devices in JavaScript
Process the received messages in JavaScript
Work with WebSockets to connect to the MQTT server
Subscribe to topics in JavaScript
Process commands that interact with LEDs in Node.js
Run the home automation web application
Debug the home automation web application
Secure MQTT over WebSockets with TLS

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Authors (1)

Gaston C. Hillar

Gaston C. Hillar

Gaston C. Hillar is Italian and has been working with computers since he was 8 years old. Gaston has a Bachelor's degree in computer science (graduated with honors) and an MBA. Currently, Gaston is an independent IT consultant and a freelance author who is always looking for new adventures anywhere in the world. He was a senior contributing editor at Dr. Dobb's, and has written more than a hundred articles on software development topics. He has received the prestigious Intel Black Belt Software Developer award eight times. He has written many articles about Java for Oracle Java Magazine. Gaston was also a former Microsoft MVP in technical computing. He lives with his wife, Vanesa, and his two sons, Kevin and Brandon.

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