Programming web services with SOAP

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The web services architecture offers a fresh perspective on application-to-application integration and interoperability, making the development platform irrelevant. Applications can communicate using XML messages over open Internet protocols like HTTP or SMTP, regardless of their operating systems or programming languages. The Simple Open Access Protocol (SOAP) is a key specification for encoding this information and has become the preferred messaging protocol for web services. This comprehensive guide focuses on using SOAP alongside other essential web services standards, including WSDL (Web Service Description Language) and UDDI (Universal Description, Discovery, and Integration protocol). It covers the web services architecture and provides practical advice for building and deploying web services in enterprise settings. The book clearly explains standards and implementation, featuring examples in Java, Perl, C#, and Visual Basic to illustrate core principles. It addresses significant applications developed with Java and Perl on the Apache Tomcat web platform, tackling real-world issues like security, debugging, and interoperability. Key topics include SOAP envelopes, headers, and encodings, writing web services with Apache SOAP and Java, peer-to-peer (P2P) services, and enterprise concerns such as authentication and identity. This resource equips you with the knowledge needed to integrate information services using SOAP eff