Reproducing the HTTP Post Call to a webservice based on a Wireshark log

Hi,

Im trying to use Wireshark to dissect the communication between two an application and a webservice, with the goal to implement the same call to the webservice in my own application.

When I filter out the request it looks like this in TCP Stream :

POST Call HTTP/1.1 Content-Type: application/x-tpnet-package Content-Length: 254 x-tpnet-msgid: 382

CTPNET$$..............TSM-KS-OS03......MMSW.TestUsr.....ATRowSet2.1.........DataSource...........MmsData1_11_SL.SchId...............Request...........SetEvent.EvId...............SchedStatus............EstTime...........H...ActualDepartTime...........H...HTTP/1.1 200 OK

My question is how can I reverse engineer the datastructure that's beeing posted here, so I can reproduse it in my own code?

brgs, Tor