public void OnData(MessageType control, Message message)
{
Logging.Log("\nCFindServiceSCP({0}).OnData", Reflection.GetName(typeof(SOPClass), this.SOPClassUId));
DataSet dicom = message.Dicom;
if (MessageControl.IsCommand(control))
{
MessageId = (ushort)dicom[t.MessageId].Value;
}
else
{
PresentationDataValue pdv;
PresentationDataPdu command;
DataSet fragment = new DataSet();
RecordCollection worklist;
if (Query != null)
{
QueryEventArgs args = new QueryEventArgs(dicom);
Query(this, args);
if (args.Cancel)
{
association.Abort();
return;
}
worklist = args.Records;
}
else
{
worklist = InternalQuery(dicom.Elements);
}
foreach (Elements procedure in worklist)
{
fragment = new DataSet();
pdv = new PresentationDataValue(PresentationContextId, Syntaxes[0], MessageType.LastCommand);
fragment.Add(t.GroupLength(0), (uint)0);
fragment.Add(t.AffectedSOPClassUID, this.SOPClassUId);
fragment.Add(t.CommandField, (ushort)CommandType.C_FIND_RSP);
fragment.Add(t.MessageIdBeingRespondedTo, MessageId);
fragment.Add(t.CommandDataSetType, (ushort)DataSetType.DataSetPresent);
fragment.Add(t.Status, (ushort)0xff00);
pdv.Dicom = fragment;
command = new PresentationDataPdu(syntaxes[0]);
command.Values.Add(pdv);
PresentationDataValue response = new PresentationDataValue(PresentationContextId, Syntaxes[0], MessageType.LastDataSet);
DataSet temp = new DataSet();
temp.Elements = procedure;
temp.Part10Header = false;
temp.TransferSyntaxUID = syntaxes[0];
response.Dicom = temp;
command.Values.Add(response);
Logging.Log(command.Dump());
SendPdu("C-FIND-RSP", command);
}
pdv = new PresentationDataValue(PresentationContextId, Syntaxes[0], MessageType.LastCommand);
fragment = new DataSet();
fragment.Add(t.GroupLength(0), (uint)0);
fragment.Add(t.AffectedSOPClassUID, this.SOPClassUId);
fragment.Add(t.CommandField, (ushort)CommandType.C_FIND_RSP);
fragment.Add(t.MessageIdBeingRespondedTo, MessageId);
fragment.Add(t.CommandDataSetType, (ushort)DataSetType.DataSetNotPresent);
fragment.Add(t.Status, (ushort)0x0000);
pdv.Dicom = fragment;
command = new PresentationDataPdu(syntaxes[0]);
command.Values.Add(pdv);
Logging.Log(command.Dump());
SendPdu("C-FIND-RSP", command);
}
}
private void PduDataReceived(byte[] pdu)
{
//Logging.Log("PduDataReceived {0}", pdu);
//Dump("<< P-DATA-TF", pdu);
// TODO this must be able to handle multiple pdvs
string syntax = Syntax.ImplicitVrLittleEndian;
ServiceClass service = FindServiceClass(pdu[10]);
if (service != null)
{
syntax = service.Syntaxes[0];
}
// TODO currently assuming that a Command comes in a single pdu
// TODO all DataSet fragments are combined into a single Message
if (MessageControl.IsDataSet((MessageType)pdu[11]))
{
//Logging.Log("dataset");
if (MessageControl.IsNotLast((MessageType)pdu[11]))
{
//Logging.Log("not last fragment");
if (file == null)
{
file = new FileStream(Guid.NewGuid().ToString() + ".tmp", FileMode.Create, FileAccess.ReadWrite);
//Dump("PduDataReceived1 ...", pdu);
}
else
{
//Logging.Log("Receiving {0} bytes", pdu.Length - 12);
}
file.Write(pdu, 12, pdu.Length - 12);
return;
}
else
{
//Logging.Log("last fragment");
if (file != null)
{
Dump("PduDataReceived2 ...", pdu);
file.Write(pdu, 12, pdu.Length - 12);
file.Flush();
DataSet dicom = new DataSet();
dicom.TransferSyntaxUID = syntax;
file.Seek(0, SeekOrigin.Begin);
dicom.Read(file);
if (service != null)
{
try
{
service.LastMessage = new Message(dicom);
((IPresentationDataSink)service).OnData(MessageType.LastDataSet, service.LastMessage);
}
catch (Exception ex)
{
Logging.Log(LogLevel.Error, "Exception in OnData for SOPClassUId={0}, {1}", service.SOPClassUId, ex.Message);
}
}
file.Close();
File.Delete(file.Name);
file = null;
return;
}
}
}
// parse response
MemoryStream memory = new MemoryStream(pdu, 0, pdu.Length);
PresentationDataPdu response = new PresentationDataPdu(syntax);
response.Read(memory);
response.Dump();
foreach (PresentationDataValue pdv in response.Values)
{
service = FindServiceClass(pdv.context);
if (service != null && service is IPresentationDataSink)
{
service.LastMessage = new Message(pdv.Dicom);
((IPresentationDataSink)service).OnData(pdv.control, service.LastMessage);
}
}
}