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Instant Messaging in Java The Jabber Protocols Iain Shigeoka 2002 | 402 pages ISBN: 1930110464 |
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$20.00 | PDF ebook | |
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$39.95 | Softbound print book | |
Table of Contents
preface xiiiabout this book xv
author online xxi
acknowledgments xxii
about the cover illustration xxiii
Part I Instant messaging primer 1
- 1 Introduction to IM concepts 3
- 1.1 Background on messaging 4
- A brief history of Jabber 11
- Goals of the Jabber project 12
- 1.2 What is Jabber? 13
- Jabberıs XML-based data formats 14
- Jabberıs simple architecture 18
- Jabberıs four core concepts 21
- 1.3 Benefits of the Jabber protocols 27
- 1.4 Drawbacks of the Jabber protocols 28
- 1.5 Conclusion 29
- 2 Jabber technical fundamentals 31
- 2.1 The Jabber messaging model 32
- Benefits 35
- Drawbacks 36
- Relying on distributed servers 38
- How Jabber packet routing works 39
- Step-by-step: a messageıs path through Jabber 44
- 2.2 The core Jabber protocols 45
- Message: Delivering data 45
- Presence: updating user online status 45
- Info/Query: handling everything else 45
- 2.3 Jabber session example 47
- 2.4 Conclusions 56
Part II Protocols, code, and advanced IM 57
- 3 IM concepts and Jabber protocols 59
- 3.1 A basic Java Jabber server 60
- Goals for our server 60
- Our server software 61
- The basic server design 62
- 3.2 The session pool maintains client connections 63
- The Session class represents a connection 64
- The SessionIndex class provides session lookup 66
- 3.3 XML parsing subsystem 69
- Representing Jabber packets 69
- The PacketQueue class as server focal point 77
- SAX parsing in Java 80
- 3.4 Packet handling and server threads 87
- Packet handling in QueueThread 90
- Parsing XML in the ProcessThread 95
- The main application Server class 97
- 3.5 Testing the server 98
- 3.6 Conclusion 100
- 4 The Jabber Message protocols 101
- 4.1 Messaging is the heart of IM 102
- 4.2 The message protocol 103
- Normal messages 104
- Chat messages 105
- Groupchat messages 106
- Headline messages 108
- Error messages 109
- Out-of-band messages 110
- Reality check: one message, many user interfaces 112
- 4.3 Java Jabber client 113
- Goals 114
- The client design 115
- The client model 116
- Using the client model 123
- Results 131
- 4.4 Conclusions 132
- 5 The presence protocols 133
- 5.1 The need for presence 134
- 5.2 The presence protocol 134
- 5.3 Adding groupchat support 138
- Groupchat protocols 138
- Server modifications 144
- Client modifications 157
- 5.4 Shortcomings of our server and basic groupchat 161
- 5.5 Conclusions 162
- 6 Info/Query and client registration 163
- 6.1 Info/Query: the catch-all protocol 164
- The IQ protocol 165
- IQ extensions 167
- 6.2 Registration creates and manages accounts 169
- User accounts 170
- The register protocol 171
- 6.3 The Jabber server modifications 175
- Adding user accounts 175
- Adding registration support 183
- 6.4 Conclusions 186
- 7 Client authentication 189
- 7.1 Authentication controls account access 190
- The authentication protocol 191
- 7.2 The Jabber server modifications 199
- 7.3 The Jabber client modifications 205
- Modifying the JabberModel 206
- The client IQ packet handlers 211
- 7.4 Conclusions 215
- 8 Roster and user presence 217
- 8.1 Roster protocol: presenceıs missing piece 218
- The roster protocol 221
- 8.2 The Jabber server modifications 224
- Representing user presence 224
- Adding a roster subsystem 226
- The roster packet handlers 233
- 8.3 The Jabber client modifications 236
- Adding minimal roster support 236
- Testing the server 238
- 8.4 Conclusions 241
- 9 Creating a complete Jabber system 243
- 9.1 Creating Jabber-compliant implementations 244
- Setting standards: the Jabber Software Foundation 245
- Enforcing standards: Jabber Powered applications 245
- Organizing standards: Jabber environments 246
- Todayıs options for achieving server compliance 247
- 9.2 Server missing pieces 248
- Server-to-server communications: federating
- Jabber domains 248
- Dialback authentication: S2S security 250
- Transports: integrating with other IM systems 257
- Deployment of Jabber servers and components 260
- Server security: creating protected Jabber services 262
- Jabber server management 264
- Adding reliability and availability 265
- 9.3 Client missing pieces 266
- 9.4 User agent clients 266
- Enhancing existing applications 268
- Chatbots: creating IM services 268
- 9.5 Conclusions 270
- 10 Enterprise Jabber 271
- 10.1 What is needed to support enterprise messaging 273
- Enhancing Jabber security 273
- Guaranteed quality of service 278
- Creating system administration tools an techniques 279
- 10.2 The promise of MOM 280
- Jabber as middleware 281
- Jabber and the J2EE Java Messaging Service 282
- Jabber, .NET, and SOAP 290
- 10.3 Examples of Jabber applications 292
- Jabber groupware 292
- Jabber network services 293
- Applications enhanced by Jabber 293
- 10.4 Distributed application alternatives to Jabbers 296
- RPCs: oldies but goodies 296
- P2P systems: the new challenger 298
- Hybrid systems: a better compromise 299
- 10.5 Conclusions 300
Jabber reference 301
references 369
index 373
DESCRIPTION
Instant Messaging has exploded into the online world and is a wildly popular service of the largest Internet Service Providers (ISP) like AOL with AOL Instant Messenger, MSN with Microsoft Messenger, and Yahoo with Yahoo Messenger. Millions of Internet users everyday exchange IMs and its use beyond messaging is just around the corner. For example, the new Microsoft .NET platform will be using instant messaging technology for data exchange.
This intermediate Java programming book provides Java programmers with the information and tools needed to create your own IM client and server software. You can use the software to create your own IM systems or integrate IM features into your existing software. Imagine allowing your customers to chat directly with technical support or other users from within your application!
This book focuses on the open source Jabber XML-based IM protocols (www.jabber.org) to create Java IM software. These open protocols allows your IM software to seamlessly communicate with the large number of other Jabber clients and servers available including commercial Jabber systems like the one that powers Disneys go.com IM.
Readers are assumed to know how to program in Java. No prior knowledge of Jabber or IM is needed.
ABOUT THE AUTHOR...
Iain Shigeoka has a Ph.D. from the University of Kansas where he conducted research in robotics, computer aided design and manufacturing, and factory automation. His current interests include the use of Java in embedded systems and network appliances.