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

Adding dynamic synchronous resources

To publish resources through our web server, we just call the Register method on the HttpServer object. We can choose between two methods: either we provide resource objects, inherited from the HttpResource class, such as the HttpSynchronousResource or HttpAsychronousResource classes, or we use lambda expressions or delegates for simple GET and POST resources.

We first demonstrate the latter to publish a resource for reading momentary sensor data. We provide a lambda expression, taking a request and response parameter. This expression will be executed when a GET method is received on the /Momentary resource:

this.httpServer.Register("/Momentary", (req, resp) => 


The resource will be added as a synchronous resource. This means that the response must be generated completely before returning from the expression. We don't have to worry about exceptions or explicitly sending the response. The web server will do that for us if we forget...