Java Network Programming and Distributed Computing

Table of Content
Table of Content...............................................................................................................................i
Copyright ..........................................................................................................................................v
Dedication...................................................................................................................................vi
PREFACE .......................................................................................................................................vi
What You'll Learn .......................................................................................................................vi
What You'll Need .......................................................................................................................vii
Companion Web Site................................................................................................................vii
Contacting the Authors .............................................................................................................vii
ACKNOWLEDGMENTS ..............................................................................................................viii
Chapter 1. Networking Theory.......................................................................................................1
1.1 What Is a Network? ..............................................................................................................1
1.2 How Do Networks Communicate? .....................................................................................2
1.3 Communication across Layers ...........................................................................................3
1.4 Advantages of Layering .......................................................................................................6
1.5 Internet Architecture .............................................................................................................6
1.6 Internet Application Protocols ...........................................................................................13
1.7 TCP/IP Protocol Suite Layers ...........................................................................................15
1.8 Security Issues: Firewalls and Proxy Servers ................................................................16
1.9 Summary ..............................................................................................................................18
Chapter 2. Java Overview ............................................................................................................20
2.1 What Is Java?......................................................................................................................20
2.2 The Java Programming Language...................................................................................20
2.3 The Java Platform...............................................................................................................25
2.4 The Java Application Program Interface.........................................................................27
2.5 Java Networking Considerations......................................................................................28
2.6 Applications of Java Network Programming...................................................................29
2.7 Java Language Issues .......................................................................................................32
2.8 System Properties...............................................................................................................36
2.9 Development Tools.............................................................................................................37
2.10 Summary...........................................................................................................................39
Chapter 3. Internet Addressing....................................................................................................40
3.1 Local Area Network Addresses ........................................................................................40
3.2 Internet Protocol Addresses..............................................................................................40
3.3 Beyond IP Addresses: The Domain Name System.......................................................43
3.4 Internet Addressing with Java...........................................................................................46
3.5 Summary ..............................................................................................................................49
Chapter 4. Data Streams..............................................................................................................50
4.1 Overview ..............................................................................................................................50
4.2 How Streams Work.............................................................................................................51
4.3 Filter Streams ......................................................................................................................60
4.4 Readers and Writers...........................................................................................................66
4.5 Object Persistence and Object Serialization ..................................................................79
4.6 Summary ..............................................................................................................................88
Chapter 5. User Datagram Protocol............................................................................................89
5.1 Overview ..............................................................................................................................89
5.2 DatagramPacket Class ......................................................................................................91
5.3 DatagramSocket Class ......................................................................................................93
5.4 Listening for UDP Packets.................................................................................................95
5.5 Sending UDP packets ........................................................................................................96
5.6 User Datagram Protocol Example....................................................................................97
5.7 Building a UDP Client/Server..........................................................................................102
5.8 Additional Information on UDP .......................................................................................107
5.9 Summary ............................................................................................................................108
Chapter 6. Transmission Control Protocol...............................................................................110
6.1 Overview ............................................................................................................................110
6.2 TCP and the Client/Server Paradigm ............................................................................113
6.3 TCP Sockets and Java.....................................................................................................114
6.4 Socket Class......................................................................................................................115
6.5 Creating a TCP Client ......................................................................................................122
6.6 ServerSocket Class ..........................................................................................................123
6.7 Creating a TCP Server.....................................................................................................126
6.8 Exception Handling: Socket-Specific Exceptions ........................................................128
6.9 Summary ............................................................................................................................129
Chapter 7. Multi-threaded Applications ....................................................................................130
7.1 Overview ............................................................................................................................130
7.2 Multi-threading in Java.....................................................................................................133
7.3 Synchronization................................................................................................................141
7.4 Interthread Communication.............................................................................................146
7.5 Thread Groups ..................................................................................................................150
7.6 Thread Priorities................................................................................................................155
7.7 Summary ............................................................................................................................156
Chapter 8. Implementing Application Protocols ......................................................................158
8.1 Overview ............................................................................................................................158
8.2 Application Protocol Specifications ................................................................................158
8.3 Application Protocol Implementation..............................................................................159
8.4 Summary ............................................................................................................................183
Chapter 9. HyperText Transfer Protocol ..................................................................................184
9.1 Overview ............................................................................................................................184
9.2 HTTP and Java .................................................................................................................192
9.3 Common Gateway Interface (CGI).................................................................................215
9.4 Summary ............................................................................................................................222
Chapter 10. Java Servlets ..........................................................................................................223
10.1 Overview ..........................................................................................................................223
10.2 How Servlets Work.........................................................................................................223
10.3 Using Servlets .................................................................................................................224
10.4 Running Servlets.............................................................................................................227
10.5 Writing a Simple Servlet ................................................................................................230
10.6 SingleThreadModel ........................................................................................................232
10.7 ServletRequest and HttpServletRequest ....................................................................233
10.8 ServletResponse and HttpResponse ..........................................................................235
10.9 ServletConfig..................................................................................................................237
10.10 ServletContext...............................................................................................................238
10.11 Servlet Exceptions........................................................................................................239
10.12 Cookies ..........................................................................................................................240
10.13 HTTP Session Management in Servlets...................................................................243
10.14 Summary........................................................................................................................244
Chapter 11. Remote Method Invocation (RMI) .......................................................................246
11.1 Overview ..........................................................................................................................246
11.2 How Does Remote Method Invocation Work? ...........................................................248
11.3 Defining an RMI Service Interface ...............................................................................250
11.4 Implementing an RMI Service Interface......................................................................251
11.5 Creating Stub and Skeleton Classes...........................................................................253
11.6 Creating an RMI Server .................................................................................................253
11.7 Creating an RMI Client...................................................................................................255
11.8 Running the RMI System...............................................................................................257
11.9 Remote Method Invocation Packages and Classes..................................................258
11.10 Remote Method Invocation Deployment Issues......................................................273
11.11 Using Remote Method Invocation to Implement Callbacks ...................................278
11.12 Remote Object Activation............................................................................................286
11.13 Summary........................................................................................................................295
Chapter 12. Java IDL and CORBA ...........................................................................................296
12.1 Overview ..........................................................................................................................296
12.2 Architectural View of CORBA .......................................................................................297
12.3 Interface Definition Language (IDL).............................................................................299
12.4 From IDL to Java ............................................................................................................302
12.5 Summary.........................................................................................................................310
Chapter 13. JavaMail ..................................................................................................................311
13.1 Overview ..........................................................................................................................311
13.2 Installing the JavaMail API ............................................................................................312
13.3 Testing the JavaMail Installation ..................................................................................313
13.4 Working with the JavaMail API .....................................................................................315
13.5 Advanced Messaging with JavaMail............................................................................333
13.6 Summary.........................................................................................................................342

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