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Programming Web Services With Perl
Given Perl's natural fit for web applications development,
it's no surprise that Perl is also a natural choice for web
services development. It's the most popular web programming
language, with strong implementations of both SOAP and
XML-RPC, the leading ways to distribute applications using
web services. But books on web services
focus on writing
these applications in Java or Visual Basic, leaving Perl
programmers with few resources to get them started.
Programming Web Services with Perl changes that, bringing
Perl users all the information they need to create web
services using their favorite language.
Programming Web Services with Perl steers clear of the hype
surrounding web services and concentrates on what is useful
and practical. The book introduces the major web services
standards, such as XML-RPC, SOAP, WSDL, and UDDI, and shows
how to implement Perl servers and clients using these
standards. You'll find detailed references on both the XML
and SOAP toolkits, and learn when to use one technology in
favor of the other. The book is rich with programming
examples that you'll find useful well past the learning
stage. And, moving beyond the basics, the book offers
solutions to problems of security, authentication, and
scalability.
Some of the topics covered in the book are:
HTTP and XML basics
XML-RPC and the toolkits
SOAP and toolkits
SOAP::Lite
Using SOAP with SMTP and other protocols
Advertising and discovering with UDDI and WSDL
The REST methodology
The future of web services
Programming Web Services with Perl was written for Perl
programmers who have no prior knowledge of web services. You
can pick up this book without any understanding of XML-RPC
or SOAP and be able to apply these technologies easily,
through the use of publicly available Perl modules detailed
in the book.
If you're interested in applying XML-RPC and SOAP
technologies to distributed programming applications, then
Programming Web Services with Perl is a book you'll want to
have.
Preface
1. Introduction to Web Services
History
The Web Services Dream
The Web Services Cold Shower
Who to Believe?
Web Services in the Real World
2. HTTP and XML Basics
HTTP
XML
XML Schema
3. Introduction to XML-RPC
History of XML-RPC
Example Client: Meerkat
Limitations of XML-RPC
4. Programming XML-RPC
Perl Toolkits for XML-RPC
RPC::XMLSimple
XMLRPC::Lite
RPC::XML
5. Introduction to SOAP
Background
XML Definitions
RPC over SOAP
SOAP Transport
Further Reading
6. Programming SOAP
A Toolkit Approach
DevelopMentor's SOAP Module
The SOAP::Lite Module
Other SOAP-Related Modules
7. Serving SOAP over HTTP
Basic SOAP::Lite Servers
The Application
Designing the Server
Tying the Interface Code to SOAP
Improving the Code and the Service
Ideas for Further Exploration
8. SOAP Services Without HTTP
Choosing a Protocol
Authentication
Transports with Server and Client
Standalone Protocols
Creating New Transport Modules
9. Service Description with WSDL
Basic WSDL
WSDL Programming
10. Service Advertising and Discovery with UDDI
Defining UDDI
Programming with UDDI::Lite
11. REST: Representational State Transfer
Defining REST
REST Principles
Programming REST
12. Advanced Web Services Topics
Message Routing
Packaging
Security
Services Discovery
Reliable Messaging
Business Process Management
Implementation Considerations
WS-Next
A. XML-RPC Toolkit Programming Reference
B. SOAP::Lite Programming Reference
C. XML-RPC Example Code
D. SOAP Example Code
E. WSDL and UDDI Examples
F. Bibliography and References
Index
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