book

Professional XMPP Programming with JavaScript® and jQuery

Name: Professional XMPP Programming with JavaScript® and jQuery
Author: Jack Moffitt
ISBN: 9780470540718

by Jack Moffitt

January 2010

Intermediate to advanced

479 pages

11h 5m

English

Wrox

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Copyright
CREDITS
ABOUT THE AUTHOR
ACKNOWLEDGMENTS
INTRODUCTION
0.1. WHO THIS BOOK IS FOR0.2. WHAT THIS BOOK COVERS0.3. HOW THIS BOOK IS STRUCTURED0.4. WHAT YOU NEED TO USE THIS BOOK0.5. CONVENTIONS0.6. SOURCE CODE0.7. ERRATA0.8. P2P.WROX.COM
I. XMPP Protocol and Architecture
1. Getting to Know XMPP
1.1. WHAT IS XMPP?1.2. A BRIEF HISTORY OF XMPP1.3. THE XMPP NETWORK1.3.1. Servers1.3.2. Clients1.3.3. Components1.3.4. Plug-ins1.4. XMPP ADDRESSING1.5. XMPP STANZAS1.5.1. Common Attributes1.5.1.1. from1.5.1.2. to1.5.1.3. type1.5.1.4. id1.5.2. Presence Stanzas1.5.2.1. Normal Presence Stanzas1.5.2.2. Extending Presence Stanzas1.5.2.3. Presence Subscriptions1.5.2.4. Directed Presence1.5.3. Message Stanzas1.5.3.1. Message Types1.5.3.2. Message Contents1.5.4. IQ Stanzas1.5.5. Error Stanzas1.6. THE CONNECTION LIFE CYCLE1.6.1. Connection1.6.2. Stream Set Up1.6.3. Authentication1.6.4. Disconnection1.7. SUMMARY
2. Designing XMPP Applications
2.1. LEARNING FROM OTHERS2.2. XMPP VERSUS HTTP2.2.1. Advantages of XMPP2.2.1.1. Pushing Data2.2.1.2. Pleasing Firewalls2.2.1.3. Improving Security2.2.1.4. A Bigger Toolbox2.2.2. Disadvantages of XMPP2.2.2.1. Statefulness2.2.2.2. Smaller Ecosystem2.2.2.3. More Overhead2.2.2.4. Specialized Implementations2.3. BRIDGING XMPP AND THE WEB2.3.1. Long Polling2.3.2. Managing the Connection2.3.3. Making JavaScript Speak XMPP2.4. MAKING XMPP APPLICATIONS2.4.1. The Browser Platform2.4.2. Basic Infrastructure2.4.3. Protocol Design2.4.3.1. Compose Existing Protocols2.4.3.2. Keep It Simple2.4.3.3. Avoid Extending Presence2.4.3.4. Participate in the Community2.5. SUMMARY
II. The Applications
3. Saying Hello: The First Application
3.1. APPLICATION PREVIEW3.2. HELLO DESIGN3.3. PREPARING THE WAY3.3.1. jQuery and jQuery UI3.3.2. Strophe3.3.3. flXHR3.3.4. XMPP Accounts3.4. STARTING YOUR FIRST APPLICATION3.4.1. User Interface3.4.2. Application Code3.4.2.1. Namespacing3.4.2.2. Document Ready Handler3.4.2.3. Custom Event Handlers3.5. MAKING CONNECTIONS3.5.1. The Connection Life Cycle3.5.2. Creating a Connection3.5.3. Connecting Hello3.5.4. Running the Application3.6. CREATING STANZAS3.6.1. Strophe Builders3.6.2. Saying Hello3.7. HANDLING EVENTS3.7.1. Adding and Removing Handlers3.7.2. Stanza Matching3.7.3. Stanza Handler Functions3.7.4. Handling Responses in Hello3.8. MORE HELLOS3.9. SUMMARY

4. Exploring the XMPP Protocol: A Debugging Console
4.1. APPLICATION PREVIEW4.2. PEEK DESIGN4.3. BUILDING THE CONSOLE4.3.1. User Interface4.3.2. Displaying Traffic4.3.3. Making XML Pretty4.3.4. Dealing with XML Input4.3.5. Making Input Easier4.4. EXPLORING XMPP4.4.1. Controlling Presence4.4.2. Probing Versions4.4.3. Dealing with Errors4.4.3.1. IQ Stanza Errors4.4.3.2. Message Stanza Errors4.4.3.3. Presence Stanza Errors4.5. BETTER DEBUGGING4.6. SUMMARY
5. Microblogging in Real Time: An Identica Client
5.1. APPLICATION PREVIEW5.2. ARTHUR DESIGN5.3. MICROBLOGGING WITH IDENTICA5.3.1. Creating Your Account5.3.2. Turning on XMPP5.4. BUILDING ARTHUR5.4.1. Getting Started5.4.2. Receiving Messages5.5. XHTML-IM5.5.1. Adding XHTML-IM to Arthur5.5.2. Sending Messages5.6. OFFLINE MESSAGES5.7. CREATING A BETTER MICROBLOGGER5.8. SUMMARY
6. Talking with Friends: One-on-One Chat
6.1. APPLICATION PREVIEW6.2. GAB DESIGN6.2.1. Presence6.2.2. Messages6.2.3. Chat Area6.2.4. Roster Area6.3. MAKING THE INTERFACE6.4. BUILDING THE ROSTER6.4.1. Requesting Rosters6.4.2. Handling IQs6.4.3. Updating Presence Status6.4.4. Adding New Contacts6.4.5. Responding to Roster Changes6.4.6. Dealing with Subscription Requests6.5. BUILDING THE CHATS6.5.1. Working with Tabs6.5.2. Creating New Chats6.5.3. Sending Messages6.6. BEST PRACTICES FOR INSTANT MESSAGING6.6.1. Understanding Message Routing6.6.2. Addressing Messages Better6.7. ADDING ACTIVITY NOTIFICATIONS6.7.1. Understanding Chat States6.7.2. Sending Notifications6.7.3. Receiving Notifications6.8. FINAL TOUCHES6.9. GABBING MORE6.10. SUMMARY
7. Exploring Services: Service Discovery and Browsing
7.1. APPLICATION PREVIEW7.2. DIG DESIGN7.3. FINDING INFORMATION7.3.1. Disco#info Queries7.3.2. Disco#items Queries7.3.3. Disco Nodes7.4. CREATING DIG7.4.1. Initial Disco Queries7.4.2. Browsing the Disco Tree7.5. DIGGING INTO SERVICES7.5.1. Finding a Proxy Server7.5.2. Discovering Features7.5.3. Looking for a Chat7.6. DISCOVERING MORE7.7. SUMMARY
8. Group Chatting: A Multi-User Chat Client
8.1. APPLICATION PREVIEW8.2. GROUPIE DESIGN8.3. PUBLIC SPEAKING8.3.1. Group Chat Services8.3.2. Entering and Leaving a Room8.3.3. Sending and Receiving Messages8.3.4. Anonymity8.3.5. Creating Rooms8.3.6. Understanding Roles and Affiliations8.4. BUILDING THE INTERFACE8.5. JOINING THE ROOM8.6. DEALING WITH PRESENCE AND MESSAGES8.6.1. Handling Room Messages8.6.2. Tracking Presence Changes8.6.3. Chat History8.6.4. Keeping It Private8.6.5. Describing Actions8.7. MANAGING THE ROOM8.7.1. Changing Topics8.7.2. Dealing with Troublemakers8.7.3. Recruiting Help8.8. IMPROVING GROUPIE8.9. SUMMARY
9. Publishing and Subscribing: A Shared Sketch Pad Introduction
9.1. SKETCHCAST PREVIEW9.2. SKETCHCAST DESIGN9.2.1. Everything Is Pubsub9.2.2. Presenter's Flow9.2.3. Audience's Flow9.3. FILLING OUT FORMS9.3.1. What Is The Data Forms Extension?9.3.2. Form Elements, Fields, and Types9.3.2.1. The <x> Element's type Attribute9.3.2.2. Form Metadata9.3.2.3. Form Fields9.3.3. Standardized Form Fields9.4. WORKING WITH PUBSUB NODES9.4.1. Creating Nodes9.4.2. Configuring Nodes9.4.3. Pubsub Events9.4.4. Publishing to a Node9.4.5. Subscribing and Unsubscribing9.4.6. Retrieving Subscriptions9.4.7. Retrieving Items9.4.8. Subscription Management9.5. BROADCASTING SKETCHES USING PUBSUB9.5.1. Building the Interface9.5.2. Sketching with Canvas9.5.3. Logging In and Making Nodes9.5.4. Publishing and Receiving Sketch Events9.5.4.1. Sketch Events9.5.4.2. Publishing Sketch Events9.5.4.3. Receiving Sketch Events9.5.4.4. Joining Late and Catching Up9.5.4.5. Gracefully Ending the Session9.5.4.6. A Better SketchPad9.6. SUMMARY
10. Writing with Friends: A Collaborative Text Editor
10.1. APPLICATION PREVIEW10.2. NETPAD DESIGN10.3. OPERATIONAL TRANSFORMATION10.3.1. Basic Principles10.3.2. Details of the Algorithm10.3.2.1. State10.3.2.2. Operation Requests10.3.2.3. Request Queue and Execution Log10.3.2.4. Priorities10.3.3. Implementation10.3.3.1. Initial Code10.3.3.2. Comparison Functions10.3.3.3. Handling Requests10.3.3.4. Execution10.3.3.5. Transformation10.4. EXTENDING THE XMPP PROTOCOL10.4.1. Ignoring the Unknown10.4.2. XML Namespaces10.4.3. Extended Elements10.4.3.1. Changing the Default Namespace10.4.3.2. Namespace Prefixes10.4.4. Extended Attributes10.4.5. Contributing Extensions10.5. DESIGNING THE PROTOCOL10.5.1. Testing for Support10.5.2. Requesting and Controlling Sessions10.5.3. Editing Operations10.6. BUILDING THE EDITOR10.6.1. The Initial Skeleton10.6.2. Starting Editing Sessions10.6.2.1. Determining Feature Support10.6.2.2. Establishing NetPad Sessions10.6.3. Chatting About Work10.6.4. Making Edits10.6.4.1. Initializing OpTrans10.6.4.2. Local and Remote Operations10.7. EXPANDING NETPAD10.8. SUMMARY
11. Playing Games: Head to Head Tic-Tac-Toe
11.1. APPLICATION PREVIEW11.2. TOETEM DESIGN11.3. DESIGNING THE GAME PROTOCOL11.3.1. Keeping Track of Users11.3.2. Managing Players11.3.3. Managing Games11.3.4. Playing and Watching the Game11.4. GETTING STARTED ON TOETEM11.5. IMPLEMENTING SESSIONS AND THE WAITING LIST11.5.1. Referee Version One11.5.2. Toetem Client Version One11.6. IMPLEMENTING GAME MANAGEMENT11.6.1. Referee Version Two11.6.2. Toetem Client Version Two11.7. IMPLEMENTING THE GAME LOGIC11.7.1. The Tic-Tac-Toe Library11.7.2. Referee Version Three11.7.3. Toetem Client Version Three11.8. MAKING THE GAME MORE FUN11.9. SUMMARY
III. Advanced Topics
12. Getting Attached: Bootstrapping BOSH
12.1. SESSION ATTACHMENT12.1.1. The Mechanics of Sessions12.1.2. Use Cases12.1.2.1. Increased or Easier Security12.1.2.2. Pushing Performance12.1.2.3. Persisting Connections12.2. AUTOMATIC LOGINS WITH SESSION ATTACHMENT12.2.1. Creating the Django Project12.3. SUMMARY
13. Deploying XMPP Applications
13.1. GROWING HORIZONTALLY13.1.1. Multiple Connection Managers13.1.1.1. nginx13.1.1.2. Haproxy13.1.2. Clustering XMPP Servers13.1.3. Spreading Out Components13.1.4. Federating Internally13.1.5. Becoming a Server13.2. GROWING VERTICALLY13.2.1. Reducing Latency13.2.1.1. Streamlining Connections and Setup13.2.1.2. Dealing with Large Stanzas13.2.2. Minimizing XML Serialization13.2.3. Optimizing DOM Operations13.2.3.1. Batching Operations13.2.3.2. Cloning Instead of Creating13.2.3.3. Limiting the Scope of Operations13.3. SUMMARY
14. Writing Strophe Plug-ins
14.1. USING PLUG-INS14.1.1. Loading Plug-ins14.1.2. Accessing Plug-in Functionality14.2. BUILDING PLUG-INS14.3. CREATING A ROSTER PLUG-IN14.3.1. Storing Contacts14.3.2. Getting and Maintaining the Roster14.3.3. Manipulating the Roster14.4. TAKING THE PLUG-IN FOR A SPIN14.4.1. Improving the Roster Plug-in14.5. SUMMARY
A. Getting Started with jQuery
A.1. FINDING JQUERYA.2. JQUERY VERSUS DOMA.3. USING JQUERYA.3.1. Finding ElementsA.3.1.1. SelectorsA.3.1.2. Augmenting SelectionsA.3.2. Acting on ElementsA.3.3. Making ChainsA.4. MANIPULATING ELEMENTSA.4.1. Data ExtractionA.4.2. Styling ElementsA.4.3. Adding and Removing ElementsA.4.4. Iterating over SelectionsA.5. DEALING WITH EVENTSA.5.1. Basic Event MethodsA.5.2. Convenience Event MethodsA.5.3. The Document Ready EventA.6. FURTHER READING
B. Setting Up a BOSH Connection Manager
B.1. CHOOSING A CONNECTION MANAGERB.1.1. Standalone ManagersB.1.2. Built-In ManagersB.1.3. Connection Manager Trade-offsB.1.3.1. Support for External ServersB.1.3.2. Setup and Configuration ComplexityB.1.3.3. ScalabilityB.2. PUNJAB: A STANDALONE MANAGERB.2.1. Getting PunjabB.2.2. Installation and SetupB.2.3. Starting and Testing PunjabB.3. EJABBERD AND MOD_HTTP_BIND: A BUILT-IN MANAGERB.3.1. Obtaining mod_http_bindB.3.2. Configuring mod_http_bindB.3.3. Restarting and Testing ejabberdB.4. PROXIES AND SECURITY POLICYB.4.1. Cross-Domain Requests with FlashB.4.1.1. Serving crossdomain.xml with PunjabB.4.1.2. Serving crossdomain.xml with ejabberdB.4.2. Proxying BOSHB.4.2.1. Configuring Apache to Proxy BOSHB.4.2.2. Configuring nginx to Proxy BOSHB.4.2.3. Using Tape for Local DevelopmentB.5. MORE BOSH CONNECTION MANAGERS

Overview

Create real-time, highly interactive apps quickly with the powerful XMPP protocol

XMPP is a robust protocol used for a wide range of applications, including instant messaging, multi-user chat, voice and video conferencing, collaborative spaces, real-time gaming, data synchronization, and search. This book teaches you how to harness the power of XMPP in your own apps and presents you with all the tools you need to build the next generation of apps using XMPP or add new features to your current apps. Featuring the JavaScript language throughout and making use of the jQuery library, the book contains several XMPP apps of increasing complexity that serve as ideal learning tools.

Coverage Includes:

Getting to Know XMPP

Designing XMPP Applications

Saying Hello: The First Application

Exploring the XMPP Protocol: A Debugging Console

Microblogging in Real Time: An Identica Client

Talking with Friends: One-on-One Chat

Exploring Services: Service Discovery and Browsing

Group Chatting: A Multi-User Chat Client

Publishing and Subscribing: A Shared Sketch Pad Introduction

Writing with Friends: A Collaborative Text Editor

Playing Games: Head to Head Tic-Tac-Toe

Getting Attached: Bootstrapping BOSH

Deploying XMPP Applications

Writing Strophe Plug-ins

Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

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