Programming Web Services with SOAP: Building Distributed Applications

by James Snell, Doug Tidwell, Pavel Kulchenko

Overview

The web services architecture provides a new way to think about and implement application-to-application integration and interoperability that makes the development platform irrelevant. Two applications, regardless of operating system, programming language, or any other technical implementation detail, communicate using XML messages over open Internet protocols such as HTTP or SMTP. The Simple Open Access Protocol (SOAP) is a specification that details how to encode that information and has become the messaging protocol of choice for Web services. Programming Web Services with SOAP is a detailed guide to using SOAP and other leading web services standards—WSDL (Web Service Description Language), and UDDI (Universal Description, Discovery, and Integration protocol). You'll learn the concepts of the web services architecture and get practical advice on building and deploying web services in the enterprise. This authoritative book decodes the standards, explaining the concepts and implementation in a clear, concise style. You'll also learn about the major toolkits for building and deploying web services. Examples in Java, Perl, C#, and Visual Basic illustrate the principles. Significant applications developed using Java and Perl on the Apache Tomcat web platform address real issues such as security, debugging, and interoperability. Covered topic areas include:

• The Web Services Architecture
• SOAP envelopes, headers, and encodings
• WSDL and UDDI
• Writing web services with Apache SOAP and Java
• Writing web services with Perl's SOAP::Lite
• Peer-to-peer (P2P) web services
• Enterprise issues such as authentication, security, and identity
• Up-and-coming standards projects for web services

Programming Web Services with SOAP provides you with all the information on the standards, protocols, and toolkits you'll need to integrate information services with SOAP. You'll find a solid core of information that will help you develop individual Web services or discover new ways to integrate core business processes across an enterprise.

Product Details

ISBN-13:	9780596000950
Publisher:	O'Reilly Media, Incorporated
Publication date:	12/27/2001
Series:	O'Reilly Temp Net Series
Edition description:	First Edition
Pages:	260
Product dimensions:	7.00(w) x 9.19(h) x 0.67(d)

About the Author

James Snell is a member of IBM's emerging software technologies team where his work is dedicated to the evolving Web services architecture.

Doug Tidwell is a senior programmer at IBM. He has more than a sixth of a century of programming experience, and has been working with markup languages for more than a decade. He was a speaker at the first XML conference in 1997, and has taught XML classes around the world. His job as a Cyber Evangelist is to look busy and to help people use new technologies to solve problems. Using a pair of zircon-encrusted tweezers, he holds a master's degree in computer science from Vanderbilt Universityand a bachelor's degree in English from the University of Georgia. He lives in Raleigh, North Carolina, with his wife, cooking teacher Sheri Castle (see her web site at http://www.sheri-inc.com) and their daughter Lily.

Table of Contents

Preface; Audience for This Book; Structure of This Book; Conventions; Comments and Questions; Acknowledgments; Chapter 1: Introducing Web Services; 1.1 What Is a Web Service?; 1.2 Web Service Fundamentals; 1.3 The Web Service Technology Stack; 1.4 Application; 1.5 The Peer Services Model; Chapter 2: Introducing SOAP; 2.1 SOAP and XML; 2.2 SOAP Messages; 2.3 SOAP Faults; 2.4 The SOAP Message Exchange Model; 2.5 Using SOAP for RPC-Style Web Services; 2.6 SOAP's Data Encoding; 2.7 SOAP Data Types; 2.8 SOAP Transports; Chapter 3: Writing SOAP Web Services; 3.1 Web Services Anatomy 101; 3.2 Creating Web Services in Perl with SOAP::Lite; 3.3 Creating Web Services in Java with Apache SOAP; 3.4 Creating Web Services In .NET; 3.5 Interoperability Issues; Chapter 4: The Publisher Web Service; 4.1 Overview; 4.2 The Publisher Operations; 4.3 The Publisher Server; 4.4 The Java Shell Client; Chapter 5: Describing a SOAP Service; 5.1 Describing Web Services; 5.2 Anatomy of a Service Description; 5.3 Defining Data Types and Structures with XML Schemas; 5.4 Describing the Web Service Interface; 5.5 Describing the Web Service Implementation; 5.6 Understanding Messaging Patterns; Chapter 6: Discovering SOAP Services; 6.1 The UDDI Registry; 6.2 The UDDI Interfaces; 6.3 Using UDDI to Publish Services; 6.4 Using UDDI to Locate Services; 6.5 Generating UDDI from WSDL; 6.6 Using UDDI and WSDL Together; 6.7 The Web Service Inspection Language (WS-Inspection); Chapter 7: Web Services in Action; 7.1 The CodeShare Service Network; 7.2 The Code Share Index; 7.3 Web Services Security; 7.4 Definitions and Descriptions; 7.5 Implementing the CodeShare Server; 7.6 Implementing the CodeShare Owner; 7.7 Implementing the CodeShare Client; 7.8 Seeing It in Action; 7.9 What's Missing from This Picture?; 7.10 Developing CodeShare; Chapter 8: Web Services Security; 8.1 What Is a "Secure" Web Service?; 8.2 Microsoft Passport, Version 1.x and 2.x; 8.3 Microsoft Passport, Version 3.x; 8.4 Give Me Liberty or Give Me ...; 8.5 A Magic Carpet; 8.6 The Need for Standards; 8.7 XML Digital Signatures and Encryption; Chapter 9: The Future of Web Services; 9.1 The Future of Web Development; 9.2 The Future of SOAP; 9.3 The Future of WSDL; 9.4 The Future of UDDI; 9.5 Web Services Battlegrounds; 9.6 Technologies; 9.7 Web Services Rollout; Appendix A: Web Service Standardization; A.1 Packaging Protocols; A.2 Description Protocols; A.3 Discovery Protocols; A.4 Security Protocols; A.5 Transport Protocols; A.6 Routing and Workflow; A.7 Programming Languages/Platforms; Appendix B: XML Schema Basics; B.1 Simple and Complex Types; B.2 Some Examples; B.3 XML Spy; Appendix C: Code Listings; C.1 Hello World in Perl; C.2 Hello World Client in Visual Basic; C.3 Hello World over Jabber; C.4 Hello World in Java; C.5 Hello, World in C# on .NET; C.6 Publisher Service; C.7 SAML Generation; C.8 Codeshare; Colophon;