Note: This topic applies to Web - HTTP/HTML and Silverlight Vuser scripts, and to Web - HTTP/HTML steps inside Flex Vuser scripts.
To implement the DFE support for a Vuser script, you must perform the steps shown in the diagram below:
You may encounter the following errors with DFE functions on 64-bit Linux environments:
Error -27040: Data Format Extension: Creating custom chain failed: Extension "UrlEncoding" was not found.
Error -35063: The "DFEs" argument is invalid. Check that the provided extensions have their configuration files defined.
Solution: Install the 32-bit version of keyutils-libs.so (keyutils-libs.i686) on your system, if it does not already exist.
For additional details about DFEs, see Data Format Extensions (DFEs) - Overview.