Having build the message body and header, we need to Post the message to the Web Service and parse the response. The template for the returned message body is:

<?xml version="1.0" encoding="utf-8"?> 

<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">

  <soap12:Body>

    <CelsiusToFahrenheitResponse xmlns="http://tempuri.org/">

      <CelsiusToFahrenheitResult>string</CelsiusToFahrenheitResult>

    </CelsiusToFahrenheitResponse>

  </soap12:Body> 

</soap12:Envelope>

Note: the placeholder "string" is hi-lighted in a different color.

For this part of the tutorial we will assume that the float variable required to hold the returned result will be passed into routine. Although a float variable type is used, ESL will automatically convert the string type data, so the following "extract from" statement is all that is required.

extract from HTTPPostWithHdr("https://www.w3schools.com/XML/tempconvert.asmx",

                             Header_SV,

                             Body_SV,

                             false,

                             false,

                             false)

      skip by "<CelsiusToFahrenheitResult>"

      take to "</CelsiusToFahrenheitResult>" Fahrenheit_FV

Note: that the call to the HTTP Post function is included within the "extract from" statement, which is quite acceptable with simple structures. If the response had multiple occurrences of a field or fields then you will need to copy the response to an ESL string, then use a loop construct to extract each occurrence.