Hello Jim,
Unfortunately the DataSocket Server will not know how to handle the POST. DataSocket is a proprietary data exchange protocol designed primarily as a tool to exchange known National Instruments data-types, as well as be a wrapper for some of the simpler internet protocols such as HTTP and FTP.
A good resource for DataSocket can be found at: http://zone.ni.com/devzone/conceptd.nsf/webmain/9574A2833AB0F8B086256CB4006A1EF7 .
Thanks for posting,
Travis M
Applications Engineer
National Instruments
Travis M
LabVIEW R&D
National Instruments