This handler is invoked when an application calls ReceiveRtFragment. Implementation is optional, but if it is not implemented the kernel returns a status of E_NOT_CONFIGURED if ReceiveRtFragment is called. If implementation is not required, the pGetFragment field of the SERVICEDESC structure should be set to NULL.
void GetFragment( LPSERVICEDESC pService, RTHANDLE hPort, LPGENADDR pAddress, WORD wTransID, LPVOID pFragment, DWORD cbFragmentSize, WORD wFlags );
RT Service handlers, ReceiveRtFragment, SERVICEDESC