Book Image

Practical XMPP

By : Lloyd Watkin, Steven Watkin, Koelle
Book Image

Practical XMPP

By: Lloyd Watkin, Steven Watkin, 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 (11 chapters)
Free Chapter
1
1. An Introduction to XMPP and Installing Our First Server

Creating a chat room


Of course, before we can ever configure our chat room we must first have created one. There are two types of room: an instant room and a reserved room. An instant room is created by the owner and it immediately allows others to join and start chatting. A reserved room is created and locked until configured by the owner.

The initial stages of creating a room are exactly the same with the creator (who becomes the owner) sending a presence stanza to the JID of the room they wish to create. So let's continue with our above example and say Biff would like to create the gang chat room at Lou's café:

<presence from='[email protected]/lous' 
to='[email protected]/biff'> 
<x xmlns='http://jabber.org/protocol/muc'/> 
</presence> 

The server could respond in a couple of ways, but let's imagine a first example that Biff would not be very pleased with:

<presence from='[email protected]/biff' 
to='[email protected]/lous'> 
  <error by...