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L_DicomSendCEchoRequest

Summary

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

Syntax

#include "ltdic.h"

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

Parameters

HDICOMNET hNet

A DICOM Network handle to the peer member of the connection.

L_UCHAR 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.

L_UINT16 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.

L_TCHAR * pszClass

Class affected by the request. This will be an SOP Class or an SOP MetaClass.

Returns

Value	Meaning
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.

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; 
}