A Simple SOAP Client
Talking to a SOAP server that provides Fibonacci numbers is not significantly harder than talking to an XML-RPC server. You just have to adjust the syntax of your request to use SOAP instead of XML-RPC. Again, we'll talk to a Fibonacci generator I'll develop in later chapters, but you can preview that at http://www.elharo.com/fibonacci/SOAP. The body of each request document contains a calculateFibonacci element in the http://namespaces.cafeconleche.org/xmljava/ch3/ namespace. This element contains a single positive integer:
<?xml version="1.0"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" > <SOAP-ENV:Body> <calculateFibonacci xmlns="http://namespaces.cafeconleche.org/xmljava/ch3/" ...
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