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L_DicomSendCEchoRequest

#include "ltdic.h"

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

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

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.

Functions

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; 
}

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