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Real World XML Web Services: For VB and VB .NET Developers by Yasser Shohoud

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11.10. Programming UDDI

UDDI APIs are exposed as Web service operations and invoked via SOAP messages. To invoke a UDDI API, the client forms a SOAP message and sends it via HTTP POST to one of the UDDI nodes' end point URL. UDDI processes the request message and sends back a response in the form of another SOAP message.

You can use a variety of tools to invoke UDDI APIs, including the UDDI SDK available from Microsoft. This SDK provides a nice object model that wraps UDDI's SOAP messages and exposes them as objects with properties and methods. The SDK is available in different versions, including a COM implementation for VB 6 and other COM-capable languages and a .NET implementation for clients using the CLR.

Although the SDK gives you a convenient ...

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