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DFE is short for Data Format Extension.  It is a feature added to LoadRunner back in version 11, but a lot of people don’t understand what it is and how it can help you.  In simple terms DFE allows for easier LoadRunner scripting by allowing us to decode and encode normally unreadable or formatted data that the may be sent between the client and the server.  A simple example would be converting a long XML request into a more readable format.  Another example would be converting an unreadable Base 64 request into something that Read Entire Entry

This post will attempt to explain how VuGen SOAP calls look by comparing the WEB/HTTP protocol and the SOAP protocol. Below is an example of raw XML that is received from a request.
<?xml version=”1.0″ encoding=”UTF-8″?>
<soap-env:Envelope xmlns:soap-env=”http://schemas.xmlsoap.org/soap/envelope/”>
<soap-env:Header>
<Authentication soap-env:mustUnderstand=”1″>
<UserID>xxxx</UserID>
<Password>xxxx</Password>
</Authentication>
<Appl Read Entire Entry