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);
}
}
}
