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A Programmer's Guide to .NET by Alexei Fedorov

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15.2. Service description language

The web services description language (WSDL) defines an XML document that describes a set of SOAP messages and how the messages are exchanged. It also defines how to communicate with the web service using HTTP-GET and HTTP-POST protocols.

Here is an example of a WSDL file for a web service:

 <?xml version="1.0" encoding="utf-8"?> <definitions xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:s0="http://www.abc.com" targetNamespace="http://www.abc.com" ...

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