Book Image

Practical XMPP

By : Steven Watkin, David Koelle
Book Image

Practical XMPP

By: Steven Watkin, David Koelle

Overview of this book

XMPP (eXtensible Messaging and Presence Protocol) is a messaging protocol that enables communication between two or more devices via the Internet. With this book, developers will learn about the fundamentals of XMPP, be able to work with the core functionality both server-side and in the browser, as well as starting to explore several of the protocol extensions. You will not only have a solid grasp of XMPP and how it works, but will also be able to use the protocol to build real-world applications that utilize the power of XMPP. By the end of this book, you will know more about networking applications in general, and have a good understanding of how to extend XMPP, as well as using it in sample applications.
Table of Contents (16 chapters)
Practical XMPP
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
1
An Introduction to XMPP and Installing Our First Server

Chapter 9. Enhancing XMPPong with a Server Component and Custom Messages

In Chapter 8, Building a Basic XMPP-Based Pong Game we created the basics of XMPPong. We took a lot of shortcuts to get a basic game up and running. In this chapter, we will continue what we left in earlier chapter to build the pong game, by creating an XMPP component to manage more aspects of the game. In the previous chapter, we relied on each client to manage a lot of information; the position of the ball, the position of the paddles, the score, and we left the game wide open for someone to inject other messages into the conversation and throw off the game.

In this chapter, our component will keep track of the game state and prevent cheating. We will introduce the use of an XMPP-FTW extension to allow us to create payloads of XML data that we can send through XMPP between the client and server component. The work we do in this chapter will prepare us for the next chapter, in which we talk about deploying XMPP applications...