void IDicomServerHandler.OnReceiveRequestMessage(DicomServer server, ServerAssociationParameters association, byte presentationID, DicomMessage message)
{
_sessionDebug.SetAssociationDumpString(association);
_sessionDebug._request = message.Dump();
#region CEcho request
if (message.CommandField == DicomCommandField.CEchoRequest)
{
server.SendCEchoResponse(presentationID, message.MessageId, DicomStatuses.Success);
Logger.LogInfo("Received ECHO-RQ message from {0}.", association.CallingAE);
return;
}
#endregion
#region MPPS NCreate Request
if (message.CommandField == DicomCommandField.NCreateRequest)
{
// june -1st-2009 :
// Unlike the "ModalityWorklistIod" class, the 'partially' implemented ModalityPerformedProcedureStepIod class could
// be usefull here.
ModalityPerformedProcedureStepIod mppsIod = new ModalityPerformedProcedureStepIod(message.DataSet);
Logger.LogInfo("Message Dumped :\n" + message.Dump("", DicomDumpOptions.KeepGroupLengthElements));
// checking message for error and anomalies
bool anomalyExist = CheckNCreateDataSetConformance(server, association, presentationID, mppsIod, true);
if (anomalyExist)
{
server.SendNCreateResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.InvalidAttributeValue);
Logger.LogError("Sending Invalid Attributes Response.");
return;
}
// wrong status
if (mppsIod.PerformedProcedureStepInformation.PerformedProcedureStepStatus != ClearCanvas.Dicom.Iod.Modules.PerformedProcedureStepStatus.InProgress)
{
server.SendNCreateResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.InvalidAttributeValue);
Logger.LogError("Recieved N-Create Request with bad status.");
return;
}
// pps already in cache (duplicated step)
string cacheKeyId = message.AffectedSopInstanceUid;
bool alreadyCached;
MPPSScp.CacheMppsEntity(association, cacheKeyId, mppsIod, out alreadyCached);
if (alreadyCached)
{
server.SendNCreateResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.DuplicateSOPInstance);
Logger.LogError("Recieved duplicated N-Create Request.");
return;
}
if (!ProcessNCreateRequest(server, presentationID, message))
{
server.SendNCreateResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.ProcessingFailure);
Logger.LogError("Sending Processing due to NCreate request Failure.");
return;
}
server.SendNCreateResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.Success);
return;
}
#endregion
#region MPPS NSet Request
if (message.CommandField == DicomCommandField.NSetRequest)
{
// june -1st-2009 :
// Unlike the "ModalityWorklistIod" class, the ModalityPerformedProcedureStepIod is fully implemented
// we can use it here.
ModalityPerformedProcedureStepIod mppsIod = new ModalityPerformedProcedureStepIod(message.DataSet);
Logger.LogInfo("Message Dumped :\n" + message.Dump("", DicomDumpOptions.KeepGroupLengthElements));
// check if pps already in cache (duplicated step)
string cacheKeyId = message.RequestedSopInstanceUid;
if (!IsMppsEntitycached(cacheKeyId))
{
server.SendNCreateResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.NoSuchObjectInstance);
Logger.LogError("Received Unknown NSset SOP.");
return;
}
// status diffrent from in progress
if (mppsIod.PerformedProcedureStepInformation.PerformedProcedureStepStatus == ClearCanvas.Dicom.Iod.Modules.PerformedProcedureStepStatus.InProgress)
{
server.SendNSetResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.InvalidAttributeValue);
Logger.LogError("Recieved N-Set Request with In Progress status.");
RemoveMppsEntityFromCache(cacheKeyId);
return;
}
// checking the received mppsiod against cached one
ModalityPerformedProcedureStepIod cachedMppsIod = GetCachedMppsIod(cacheKeyId);
//assuming cachedMppsIod not null.
bool anomaly = CheckNSetDataSetConformance(server, association, presentationID, cachedMppsIod, mppsIod, true);
if (anomaly)
{
server.SendNSetResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.InvalidAttributeValue);
Logger.LogError("Sending Failure Response.");
RemoveMppsEntityFromCache(cacheKeyId);
return;
}
string studyInstanceUID = mppsIod.
PerformedProcedureStepRelationship.
DicomAttributeProvider[DicomTags.StudyInstanceUid].
GetString(0, "");
XmlElement performedSeriesSQ = GenerateXmlForPerformedSeriesSQ(message, studyInstanceUID);
bool success = true;
if (mppsIod.PerformedProcedureStepInformation.PerformedProcedureStepStatus
== ClearCanvas.Dicom.Iod.Modules.PerformedProcedureStepStatus.Completed)
{
success = ProcessNSetRequestForCompleted(server, presentationID, message, performedSeriesSQ);
}
if (mppsIod.PerformedProcedureStepInformation.PerformedProcedureStepStatus
== ClearCanvas.Dicom.Iod.Modules.PerformedProcedureStepStatus.Discontinued)
{
success = ProcessNSetRequestForDiscontinued(server, presentationID, message, performedSeriesSQ);
}
if (success)
{
server.SendNSetResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.Success);
}
else
{
server.SendNSetResponse(presentationID, message.MessageId, new DicomMessage(), DicomStatuses.ProcessingFailure);
}
MPPSScp.RemoveMppsEntityFromCache(cacheKeyId);
return;
}
#endregion
//ignore all unsupported request
server.SendAssociateAbort(DicomAbortSource.ServiceProvider, DicomAbortReason.UnexpectedPDU);
Logger.LogInfo("Unexpected Command. Send Associate Abort message from server to {0}.", association.CallingAE);
return;
}
