public static bool OnPdu(EK.Capture.Dicom.DicomToolKit.ProtocolDataUnit pdu)
{
switch (pdu.PduType)
{
case ProtocolDataUnit.Type.A_ASSOCIATE_RQ:
{
AssociateRequestPdu request = pdu as AssociateRequestPdu;
}
break;
case ProtocolDataUnit.Type.A_ASSOCIATE_AC:
{
AssociateRequestPdu response = pdu as AssociateRequestPdu;
}
break;
case ProtocolDataUnit.Type.A_ASSOCIATE_RJ:
{
AssociateRejectPdu reject = pdu as AssociateRejectPdu;
}
break;
case ProtocolDataUnit.Type.P_DATA_TF:
{
PresentationDataPdu message = pdu as PresentationDataPdu;
}
break;
case ProtocolDataUnit.Type.A_RELEASE_RQ:
{
AssociationReleasePdu request = pdu as AssociationReleasePdu;
}
break;
case ProtocolDataUnit.Type.A_RELEASE_RP:
{
AssociationReleasePdu response = pdu as AssociationReleasePdu;
}
break;
case ProtocolDataUnit.Type.A_ABORT:
{
AssociateAbortPdu abort = pdu as AssociateAbortPdu;
}
break;
}
// return true if you change the pdu, false if you did not
return(true);
}
private void PipeThread(object arg)
{
threadEvent.Set();
Connection connection = arg as Connection;
byte[] buffer = new byte[MaxPduSize];
int position = 0;
MethodInfo OnPdu = null;
if (assembly != null)
{
//Use reflection to call the static Main function
Module[] mods = assembly.GetModules(false);
Type[] types = mods[0].GetTypes();
Type type = mods[0].GetType("Script");
// get a hold of Script
OnPdu = type.GetMethod("OnPdu");
}
try
{
NetworkStream input = new NetworkStream(connection.ReadSocket, FileAccess.Read, false);
NetworkStream output = new NetworkStream(connection.WriteSocket, FileAccess.Write, false);
while (true)
{
byte[] bytes = Receive(input, buffer, ref position);
if (bytes == null)
{
break;
}
// if we have some data and a valid script, execute the script
MemoryStream memory = new MemoryStream(bytes, 0, bytes.Length);
ProtocolDataUnit pdu = null;
switch ((ProtocolDataUnit.Type)bytes[0])
{
case ProtocolDataUnit.Type.A_ASSOCIATE_RQ:
pdu = new AssociateRequestPdu();
pdu.Read(memory);
break;
case ProtocolDataUnit.Type.A_ASSOCIATE_AC:
pdu = new AssociateRequestPdu();
pdu.Read(memory);
// we will need to know the transfer syntaxes of presentation data
ExtractSyntaxes((AssociateRequestPdu)pdu);
break;
case ProtocolDataUnit.Type.A_ASSOCIATE_RJ:
pdu = new AssociateRejectPdu();
pdu.Read(memory);
break;
case ProtocolDataUnit.Type.P_DATA_TF:
// find the presentation's transfer syntax as negotiated earlier in the association
string syntax = syntaxes[bytes[10]];
pdu = new PresentationDataPdu(syntax);
pdu.Read(memory);
break;
case ProtocolDataUnit.Type.A_RELEASE_RQ:
pdu = new AssociationReleasePdu((ProtocolDataUnit.Type)bytes[0]);
pdu.Read(memory);
break;
case ProtocolDataUnit.Type.A_RELEASE_RP:
pdu = new AssociationReleasePdu();
break;
case ProtocolDataUnit.Type.A_ABORT:
pdu = new AssociateAbortPdu();
pdu.Read(memory);
break;
default:
Logging.Log(LogLevel.Error, "Unsupported ProtocolDataUnit.Type={0}", bytes[0]);
break;
}
if (connection.LogEnabled)
{
Logging.Log(LogLevel.Verbose, pdu.Name);
string text = String.Format("{0} bytes.", pdu.Length);
if (pdu.Length < 8192)
{
text = pdu.ToText();
}
Logging.Log(LogLevel.Verbose, text);
}
if (assembly != null && pdu != null && OnPdu != null)
{
// if the script returns true, assume the pdu was changed
if (RunScript(OnPdu, pdu))
{
// so we re-write the contents into the byte array
MemoryStream stream = new MemoryStream();
pdu.Write(stream);
bytes = stream.ToArray();
}
}
// we pass the bytes, altered or not, on to the other side
output.Write(bytes, 0, bytes.Length);
}
}
finally
{
threadEvent.Reset();
connection.Close();
}
}
