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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

Debugging asynchronous code with Chrome Developer Tools (CDT) in JavaScript

Any modern web browser allows us to easily debug JavaScript code. Now, we will use Chrome Developer Tools (CDT) to debug the asynchronous JavaScript code that runs in our web application. You can perform the same tasks with other browsers; you will just need to follow different steps.

Make sure that you are using Chrome to render the home_automation.html web page. In Chrome, select the Chrome menu located on the upper-right corner of the window and then select More Tools | Developer Tools. Chrome will display a window or a panel with the developer tools. The tools can be undocked into a separate window, docked to the bottom of the main window, or docked to the right of the main window.

Click on the Sources tab, navigate to home_automation.js, and click on this JavaScript file. The source code for the JavaScript file will be displayed.

You can easily establish breakpoints by clicking on the line numbers. Click on the...

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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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