Book Image

Mastering Internet of Things

By : Peter Waher
Book Image

Mastering Internet of Things

By: Peter Waher

Overview of this book

The Internet of Things (IoT) is the fastest growing technology market. Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. Mastering Internet of Things starts by presenting IoT fundamentals and the smart city. You will learn the important technologies and protocols that are used for the Internet of Things, their features, corresponding security implications, and practical examples on how to use them. This book focuses on creating applications and services for the Internet of Things. Further, you will learn to create applications and services for the Internet of Things. You will be discover various interesting projects and understand how to publish sensor data, control devices, and react to asynchronous events using the XMPP protocol. The book also introduces chat, to interact with your devices. You will learn how to automate your tasks by using Internet of Things Service Platforms as the base for an application. You will understand the subject of privacy, requirements they should be familiar with, and how to avoid violating any of the important new regulations being introduced. At the end of the book, you will have mastered creating open, interoperable and secure networks of things, protecting the privacy and integrity of your users and their information.
Table of Contents (24 chapters)
Title Page
Copyright and Credits
Packt Upsell

Chapter 7. Communicating More Efficiently Using CoAP

In the previous two chapters, you learned how to use the HTTP protocol to publish your data and to interact with your devices. But HTTP has some limitations when it comes to resource-constrained devices: it is very verbose and consumes a lot of bandwidth compared to the amount of data being transported.

In this chapter, you'll learn how to use the Constrained Application Protocol, or CoAP, to create interfaces for resource-constrained devices, typically devices in networks where bandwidth is an issue. The chapter covers:

  • An introduction to the CoAP protocol
  • Security in CoAP
  • Content encoding in CoAP
  • Publishing data using CoAP
  • The Observe or Event Subscription communication pattern
  • Responding to control actions using CoAP
  • Testing your CoAP devices
  • Encrypting your CoAP devices