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Twisted Network Programming Essentials (Paperback)

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Key Phrases: accepting mail, downloading mail, test page content, Perspective Broker, Done Figure, User Interface (more...)

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Editorial Reviews

Product Description

"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.

About the Author

Abe Fettig is a software developer, which means he designs and builds software. Abe specializes in making it easier and more fun to communicate and share information over the Internet. He's been writing web and Internet appications since 1998.

Abe is currently employed as a software engineer for JotSpot, helping develop the world's first (and best) application Wiki. He also maintains the Hep and Yarn open source projects, which make it easier to transfer and manage messages between blogs, email, and rss using the Twisted networking framework. Abe's book Twisted Network Programming Essentials was published by O'Reilly in 2005.

Abe lives in southern Maine with my wife, Hannah. He works mostly out of his home office but periodically visits the San Francisco Bay area. You can contact Abe by sending email to abe@fettig.net.

Product Details

Paperback: 213 pages
Publisher: O'Reilly Media (October 1, 2005)
Language: English
ISBN-10: 0596100329
ISBN-13: 978-0596100322
Product Dimensions: 9.2 x 7.1 x 0.6 inches
Shipping Weight: 14.1 ounces (View shipping rates and policies)

Average Customer Review: 3.1 out of 5 stars See all reviews (16 customer reviews)

Amazon.com Sales Rank: #291,253 in Books (See Bestsellers in Books)
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#26 in Books > Computers & Internet > Networking > Network Programming
#81 in Books > Professional & Technical > Engineering > Civil > Construction > Management

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Inside This Book (learn more)

Key Phrases - Statistically Improbable Phrases (SIPs): (learn more)
accepting mail, downloading mail, test page content, def render, credentials checker, import portal, import reactor, import protocol, deferred object, sendmail function, avatar interface, server using telnet, import sys, logout function, email module, callback handler, requested interfaces, telnet localhost, mbox format, deferred result, return len, event loop, keyword arguments, does that work, protocol object

Key Phrases - Capitalized Phrases (CAPs): (learn more)
Perspective Broker, Done Figure, User Interface, Test User, User Name, File Edit, Using Authentication, Web Servers Example, Storing Web Data, Local Folders, Sharing Python Objects, New Post, Authentication Example, Representing Users, Download Complete, Downloading Messages, Enabling Web Services Using, Data Forwarding Protocol, Accepting Connections, Hierarchy of Resources, Edit Page, Authenticating Against, Twisted Server, Apple Computer, Mail Clients Example

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Customer Reviews

16 Reviews

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42 of 44 people found the following review helpful:

3.0 out of 5 stars The first Twisted book has made it to press. Is it the book you've been waiting for?, November 2, 2005

By	Kevin Turner "software enthusiast" (North America) - See all my reviews (REAL NAME)

Check 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.

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12 of 12 people found the following review helpful:

2.0 out of 5 stars Disappointing, July 19, 2006

By	Arnar Birgisson (Reykjav�k, IS Iceland) - See all my reviews

This book was disappointing to me. It does not cover Twisted fundamentals very well or comprehensively, but is rather a collection of few large code-examples and verbose commentary. For an introductory (or 'essentials' as the title state) material to Twisted, you are better off with the online manuals.

Granted, there are a few "oh - that's clever" moments in the book, but those are buried in the examples and hard to look up for future reference.

The bulk of the book shows examples for web clients and servers (simple stuff, not useful since easier-to-use and more powerful tools/libraries exist) and low-level pop, smtp, imap and nntp servers and clients (probably not very common in today's applications).

I haven't used Twisted extensively in a real project, but I have read the online docs and fiddled with small scripts - and the "new" things beyond them that I discovered reading this book can be counted on the fingers of one hand (namely Perspective Broker, authentication and SSH stuff).

I would have liked this book to be a more comprehensive overview of twisted's fundamentals and the base-protocols it provides - with more examples of custom protocols - since that's probably what most people turn to Twisted for.

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14 of 16 people found the following review helpful:

4.0 out of 5 stars Not complete, but a good entry point to Twisted, February 1, 2006

By	Michael Pirnat "geek errant" (Westlake, OH United States) - See all my reviews (REAL NAME)

When Twisted started to explode onto the scene, I was really intrigued by its varied capabilities and asynchronous model, but I was turned off by the then-scant documentation and the webapp framework transition that was just beginning (Woven was deprecated and Nevow was too new for any sort of coherent explanation). I just didn't have time to wrap my head around it, and so Twisted fell off my radar screen for a while. Eventually, I saw that a book was on the way, and I was excited to jump back in with it as my guide.

Twisted Network Programming Essentials is not an exhaustive reference to Twisted, nor does it even pretend to be. Rather, it's a pretty friendly, task-oriented exploration, providing examples of common tasks and insight into the key concepts and design patterns that are essential to grokking Twisted. Each chapter focuses on a particular topic, and they're arranged to build upon each other nicely. Sections within each chapter are broken down into a practical, easily digested structure--we're introduced to the task at hand, then the "How do I do that?" and "How does it work?" bits clearly and plainly walk us through an example solution and dissect its inner workings. At 202 pages of actual text, its eleven chapters make for a comfortable chapter-per-evening of reading and play. It's well worth either keying in or downloading the example code to see Twisted in action.

Covered topics include installing Twisted, the essential Twisted concepts; HTTP clients and servers; RPC; authentication; mail clients and servers (POP and IMAP); NNTP clients and servers; fun with SSH; and some practical, non-glamorous things like running your app as a proper daemon, adding administrative interfaces, and logging. You'll monitor download progress, make a simple blog, build an IMAP server, and more. You'll chain protocols together to make an email interface to Google. You'll be impressed by the power and cleanliness of Twisted's authentication model, and you'll have fun getting and using references to remote Python objects with Perspective Broker. There's also a pretty good explanation of REST, and plenty of links to useful reading.

All is unfortunately not shiny and delicious, though. I encountered what I consider quite a few programming errors in the example code, as well as several places where the explanatory text doesn't quite jive with the example. These errors are all fairly minor, and are probably artifacts of the evolution of the text and examples, but the frequency with which they crop up suggested that either no one had run the code before approving it for printing, or that errors were deliberately introduced to see if the reader is paying attention. As someone with a professional investment in web applications and frameworks, I was disappointed not to see any investigation of Nevow (not stable enough at the time of writing to be included, alas). The SSH chapter mentions but does not discuss or dive into the file transfer and connection tunneling concepts. I was also let down by the strict focus on programs that only used the basic Twisted reactor for managing events--the challenge of integrating Twisted's powerful capabilities into an existing event-driven program (eg, any GUI app) is entirely omitted. Furthermore, the book ends somewhat suddenly; I would have welcomed a "Great! What now?" sort of wrap-up that would provide a guidepost to more advanced topics.

These warts are quite forgiveable, however, and will hopefully be corrected in a future revision. The book is clean, friendly, and clear, and provides a nice entry into the world of Twisted. We are neither talked down to, nor beaten into submission by overly dense, inscrutable prose. For this printing, keep the errata handy to quickly resolve any issues with the example code (and submit anything new that you find). While the topics might be considered limited, it's clear that what's here is the tip of the iceberg; you can use these familiar topics to try to sell your boss on Twisted, and then your imagination is the only limit to what you can do. Since my initial experience with Twisted, the core documentation has improved immensely, but it's even stronger if you're already familiar with what's presented here; start with this book, then dive on into the online docs, and you'll be a Twisted guru in no time.

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Most Recent Customer Reviews

1.0 out of 5 stars Disappointing
On the upside, this book is obviously written by someone who knows Twisted well, and shares the values of its developers. Read more

Published 1 month ago by Mark Nottingham

1.0 out of 5 stars Superficial book
I'm a bit disappointed about this book. All the information included in the different chapters can be found on the Internet, same goes for the examples. Read more

Published 2 months ago by Pietro Michiardi

2.0 out of 5 stars Outdated and Missing Fundamentals
The book is not up to date with the latest Twisted release. Unfortunately, the changes in the new framework are material and the book is a little misleading. Read more

Published 2 months ago by Paul M.

2.0 out of 5 stars Not for LEARNING Twisted
When I first received this book, I saw that it was short and rejoiced. I usually never get through a 400 or 500 page programming book, because I get the early concepts, and then... Read more

Published 10 months ago by Paul Hummer

3.0 out of 5 stars eh, could be better, could be worse
The book was a very basic introduction to twisted. For the most part it will really only benefit someone who is relatively new to Python and needs to perform some quick network... Read more

Published 11 months ago by Jesse G. Lands

4.0 out of 5 stars Good read
The book gave a much clearer initial picture (to me) of the Twisted system than the online documentation did. Read more

Published 12 months ago by Brandon Gilmore

4.0 out of 5 stars Twisted Programmers must have
This book will take you through all the packages that will allow you to master the twisted programming. Read more

Published 13 months ago by MARTINEZ ZAPATA, PASCUAL

1.0 out of 5 stars Please save your money.
This book is nothing more than a handful of code examples that you can just as easily get from the web. Read more

Published on July 20, 2007 by Lee Crawford

5.0 out of 5 stars THIS BOOK IS TWISTED!!!!
Are you a developer who wants to start building applications using twisted? If you are, then this book is for you! Read more

Published on May 23, 2006 by John R. Vacca

5.0 out of 5 stars Provides insights on the open source network application framework written in Python
Abe Fettig's Twisted: Network Programming Essentials provides insights on the open source network application framework written in Python. Read more

Published on May 2, 2006 by Midwest Book Review

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