L_DicomSendCEchoRequest

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#include "ltdic.h"

L_LTDIC_API L_INT L_DicomSendCEchoRequest(hNet, nPresentationID, nMessageID, pszClass)

HDICOMNET hNet;	/* a DICOM Network handle */
L_UCHAR nPresentationID;	/* presentation ID */
L_UINT16 nMessageID;	/* message ID */
L_TCHAR * pszClass;	/* class type */

Sends a C-ECHO-REQ message to a peer member of a connection. This function is available in the PACS Imaging Toolkit.

Parameter	Description
hNet	A DICOM Network handle to the peer member of the connection.
nPresentationID	Presentation ID. The presentation ID provides information about both the class type of the data and the transfer syntax to use when transferring the data.
nMessageID	Message ID. Each message sent by a member of a connection should have a unique ID. Since a member of a connection may send several messages, this ID allows that member to identify when a specific request has been completed.
pszClass	Class affected by the request. This will be an SOP Class or an SOP MetaClass.

Returns

DICOM_SUCCESS	The function was successful.
>0	An error occurred. Refer to Return Codes.

Comments

Calling this function generates a call to RECEIVECECHOREQUESTCALLBACK on the SCP. The SCP should respond by calling L_DicomSendCEchoResponse which will generate a call to RECEIVECECHORESPONSECALLBACK.

Required DLLs and Libraries

LTDIC

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

Platforms

Win32, x64, Linux.

See Also

Functions:	L_DicomSendCEchoResponse, RECEIVECECHOREQUESTCALLBACK, RECEIVECECHORESPONSECALLBACK
Topics:	Working with DICOM Network Connections

Example

L_INT DicomSendCEchoRequestExample(HDICOMNET hNet)
{
   L_TCHAR    szUID[200];
   L_TCHAR    szMsg[200];
   L_UCHAR   nID;
   HDICOMPDU hPDU;
   L_INT nRet;
   /* send an Echo Request Command to the server */
   lstrcpy(szUID, UID_VERIFICATION_CLASS);
   hPDU = L_DicomGetAssociate(hNet);
   if(!hPDU)
   {
      wsprintf(szMsg, TEXT("Invalid Association!"), szUID);
      MessageBox(NULL, szMsg, TEXT("Error"), MB_OK);
      return DICOM_ERROR_PARAMETER;
   }
   nID = L_DicomFindAbstract(hPDU, szUID);
   if(nID == 0)
   {
      wsprintf(szMsg, TEXT("Abstract Syntax %s Not Supported by Association!"), szUID);
      MessageBox(NULL, szMsg, TEXT("Error"), MB_OK);
   }
   else
   {
      /* now, use the high-level method to send the command set */
      nRet = L_DicomSendCEchoRequest(hNet, nID, 1, szUID);
      if (nRet != DICOM_SUCCESS)
         return nRet;
   }
   return DICOM_SUCCESS;
}