April 2009
Beginner to intermediate
308 pages
9h 8m
English
Content preview from XMPP: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 2. Basics of XMPP
This chapter outlines the fundamental features used by all XMPP-based applications. We first describe the generic architecture of XMPP systems and then the addressing scheme for XMPP communications, the three communication “primitives,” the model for sharing information about availability on the network (called presence), and the processes for session establishment.
Architecture
All good Internet technologies have an “architecture”—a way that various entities fit together, link up, and communicate. For example, the World Wide Web consists of millions of web servers running software like Apache, and many more millions of web clients (browsers) running software like Firefox, all using standard protocols and data formats like HTTP and HTML. As another example, the email infrastructure consists of millions of email servers running software like Postfix, and many more millions of email clients running software like Thunderbird, all using standard protocols like SMTP, POP, and IMAP.
Similarly, the Internet’s infrastructure for instant messaging, presence, and other forms of real-time communication increasingly consists of hundreds of thousands of Jabber servers running software like ejabberd and Openfire, and millions of Jabber clients running software like Adium, Gajim, Pidgin, and Psi, all using the standard protocol we call XMPP.
XMPP technologies use a decentralized client-server architecture similar to the architectures used for the World Wide Web and the email ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.