XMPP: The Definitive Guide: Building Real-Time Applications with Jabber Technologies Review

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XMPP: The Definitive Guide: Building Real-Time Applications with Jabber Technologies ReviewAn equally great book if you are new to XMPP, or if you are an architect or a developer who has been previously exposed to the technology. Placing myself in the latter camp (worked on an asynchronous XMPP Ruby client), I found this book to be very useful for filling in the technical gaps. While the XMPP spec is a well written one, it is still hardly an enjoyable read. The authors did a great job between balancing the technical details and adopting an informal style which allows them to compress the specification into easily digestible chapters (they give you the basics, you're free to read the full spec).
The book covers all the major components: overall architecture, handshake, presence protocol, multi-user chat, data transfers, security, etc. If you're thinking about adopting XMPP, you should pick up a copy.XMPP: The Definitive Guide: Building Real-Time Applications with Jabber Technologies Overview
This practical book provides everything you need to know about the Extensible Messaging and Presence Protocol (XMPP). This open technology for real-time communication is used in many diverse applications such as instant messaging, Voice over IP, real-time collaboration, social networking, microblogging, lightweight middleware, cloud computing, and more.XMPP: The Definitive Guide walks you through the thought processes and design decisions involved in building a complete XMPP-enabled application, and adding real-time interfaces to existing applications. You'll not only learn simple yet powerful XMPP tools, but you'll also discover, through real-world developer stories, how common XMPP "building blocks" can help solve particular classes of problems. With this book, you will:



Learn the basics of XMPP technologies, including architectural issues, addressing, and communication primitives
Understand the terminology of XMPP and learn about the wealth of XMPP servers, clients, and code libraries
Become familiar with the XMPP concepts and services you need to solve common problems
Construct a complete business application or real-time service with XMPP

Every day, more software developers and service providers are using XMPP for real-time applications, and with the help of XMPP: The Definitive Guide, you can, too.


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Twisted Network Programming Essentials Review

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Twisted Network Programming Essentials ReviewCheck out the table of contents: The chapters are Getting Started, Building Simple Clients and Servers, Web Clients, Web Servers, Web Services and RPC, Authentication, Mail Clients, Mail Servers, NNTP Clients and Servers, SSH, and finally Services, Processes, and Logging.
That's a lot of distinct subjects in a two-hundred page book. The result is a good demonstration of how broad Twisted's domain is, but the chapters, for the most part, do not build on one another. While that allows you to skip the chapter on news servers and read the SSH chapter without much difficulty, it also means you're getting lots of separate chunks of knowledge that don't add up to anything greater than the sum of their parts.
I was hoping to see more material on general topics that apply to all Twisted programs. Interfaces are one example. Interfaces, as used in Twisted, are not a part of the Python standard library and I would not assume a reader to be familiar with them. But while Interfaces do come up in a number of the examples, nowhere does the author take the time to explain why you're importing from zope.interface or how and where Twisted uses them. Yes, there are examples, but nothing to help you understand the theory for when you have to write your own code.
Nowhere do we learn how to write tests for asynchronous functions. While the last chapter touches on the organization of services in a Twisted application, it fails to note basics like what method you'd want to implement to run tasks during a graceful shutdown. In all the attention to different network protocols, the framework aspect of Twisted seems to have been neglected.
So overall, if you want to embed an email server in your application, this book will give you a place to start. If you want a hard copy text to demonstrate the range of applications Twisted can reach, this book will do that. But if your main concern is that Twisted makes your head hurt and you want someone to make it seem less alien, I'm not sure this is the book you've been waiting for.Twisted Network Programming Essentials Overview
Twisted Network Programming Essentials from O'Reilly is a task-oriented look at this new open source, Python-based technology. The book begins with recommendations for various plug-ins and add-ons to enhance the basic package as installed.It then details Twisted's collection simple network protocols, and helper utilities.The book also includes projects that let you try out the Twisted framework for yourself. For example, you'll find examples of using Twisted to build web services applications using the REST architecture, using XML-RPC, and using SOAP.

Written for developers who want to start building applications using Twisted, this comprehensive guide presents examples of the most common tasks you'll face when building network applications.It also helps you understand the key concepts and design patterns used in Twisted applications.Here are just some of the topics discussed in Twisted Network Programming Essentials:

Installing Twisted
How to make TCP connections
How to use Twisted to work with the Web
Twisted's authentication framework
Usenet and SSH clients and servers

Along the way, each lesson is supported by thorough notes and explanations to make absolutely certain you're up to speed with this leading-edge Python technology.


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