December 2002
Intermediate to advanced
720 pages
17h 39m
English
Content preview from .NET and COM Interoperability Handbook, The
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Web Services: The Big Picture
Before I look at how the .NET Framework and Visual Studio .NET help you to develop Web services, let's look at the constituent elements of an XML Web service at a very generic level. Remember, XML Web services are not strictly a .NET technology. The .NET Framework and Visual Studio .NET were designed to make it easy to develop XML Web services, but you can build an XML Web service on any platform that supports HTTP and XML.
A Web service is composed of a SOAP/HTTP listener, one or more classes that implement the Web service's business logic, and a metafile for the Web service that you can write with WSDL (see Figure 10-1).
Figure 10-1. An XML Web service.
The SOAP/HTTP listener reads the SOAP requests sent through ...