Using Postman to test SOAP webservices

Recently I had to maintain a soap-based webservice. Really ugly stuff, you know. The problem is that I wanted to test my endpoint, but as the development environment is inside a docker that is inside a vagrant (is it correct to say this? 😩) I'm unable to use online tools like plum voice soap tester (or maybe it is some restriction in my network, not sure).

Looking for a desktop application I just found some specific to REST webservices. I didn't look much tought, I decided to try some way to test soap with a rest tool. And this is how I did it with Postman:

  1. Set the request URL to use POST Set the request URL to use POST

For this tutorial we're going to use this wsdl: http://www.dneonline.com/calculator.asmx

  1. Then, set the body to raw and the content-type to XML (text/xml) Postman body

  2. Set the envelope according to the specifications

    <?xml version="1.0" encoding="utf-8"?>
    <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Body>
     <Add xmlns="http://tempuri.org/">
       <intA>4</intA>
       <intB>2</intB>
     </Add>
    </soap:Body>
    </soap:Envelope>
    
  3. Hit send! You should get the response below

    <?xml version="1.0" encoding="utf-8"?>
    <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
     <soap:Body>
         <AddResponse xmlns="http://tempuri.org/">
             <AddResult>6</AddResult>
         </AddResponse>
     </soap:Body>
    </soap:Envelope>
    

Postman response

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