Azure API Management Feature: SOAP pass-through

Posted: August 1, 2018  |  Categories: API Management Azure SixPivot Uncategorized
Tags: APIM SOAP

By Bill Chesnut

This is the first post in a multi-part series on the features of Azure API Management.

When companies embark on a migration to Azure, they tend to have lots of legacy application, when they start using Azure API Management (APIM), they also want to expose some of these legacy applications, that is where the SOAP pass-through feature of APIM helps out. This feature allow you to publish these SOAP services in APIM.

For this blog post I am going to demonstrate how you publish a BizTalk SOAP service in APIM. With APIM you can publish SOAP services by importing the WSDL (this can be either via the URL or by uploading the WSDL file), In APIM Click the “API” menu item on the left, then Click “WSDL”

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In this demonstration I am going to use an uploaded file, this is the WSDL from a BizTalk orchestration exposed as a WCF Request/Response Service, it only has a single operation ‘submit”. I am using an uploaded file because the BizTalk server is hosted in an Azure Virtual Machine and I have changed the URL to reflect the DNS name of the Virtual Machine. I could have also changed the name in APIM after the WSDL was imported. Configure as shown and click “Create”

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Once the WSDL import is complete, we can now see the API and it’s operations, now let click “Settings” to look at the API settings, this is where we can change the URL to the BizTalk Server hosting our SOAP Service, instead of inside the WSDL file as I have done.

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Now lets click the “Test” tab, this is where we can test our API Operation, before we release them to our consumers

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APIM Fills in all the details to test the API, notice that the payload for the API is XML, this is because we chose SOAP pass-through, SOAP services are XML based. Click “Send”

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You can now see the results of our call to the BizTalk hosted SOAP Service, the results are in XML, now lets click the “Trace” tab, this will give us everything that has taken place in APIM as part of our call to the BizTalk SOAP service.  Scroll down to see the full Trace.

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Hopefully this has given you a quick demonstration on how to expose your SOAP Services with APIM.

Cross Posted on http://www.sixpivot.com.au

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