Figure 1. Interfacing With EFSnet In the EFSnet system, you create a SOAP object on a local machine, point to the EFSnet WSDL file, invoke the appropriate method, and read the return values. You then create an XML document, and HTTPS POSTs the document to EFSnet and reads the return values. Finally, you create a name/value pair query string, and HTTPS POSTs the query string to EFSnet and reads the return values from the return POST.