///// <summary>
///// Sends a request for DIMSE association to a DICOM service
///// </summary>
///// <param name="asc">the underlying association</param>
///// <param name="abstractSyntax">the proposed abstract syntaxes (what should the service be able to do)</param>
public static void SendRequest(Association asc, params string[] abstractSyntaxes)
{
var request = new Request {CalledEntityTitle = asc.AeTitle, CallingEntityTitle = asc.ServiceClass.ApplicationEntity.AeTitle};
abstractSyntaxes.Select((a, i) => new {a, i})
.ToList()
.ForEach(a =>
{
var pres = new PresentationContext
{
AbstractSyntax = a.a,
Id = a.i*2 + 1, //Convention of odd numbers
Reason = PresentationContextReason.ACCEPTANCE,
TransferSyntaxes = asc.ServiceClass.SupportedTransferSyntaxes
};
request.PresentationContexts.Add(pres);
});
asc.PresentationContexts.AddRange(request.PresentationContexts);
request.UserInfo = new UserInfo();
asc.Logger.Log("--> " + request);
asc.SendMessage(request);
}
public static Accept Generate(Request request, List<PresentationContext> contexts)
{
var accept = new Accept
{
ApplicationContext = request.ApplicationContext,
CalledEntityTitle = request.CalledEntityTitle,
CallingEntityTitle = request.CallingEntityTitle,
PresentationContexts = contexts,
ProtocolVersion = request.ProtocolVersion,
UserInfo = new UserInfo
{
AsynchronousOperations = null,
ImplementationUID = Constants.EVIL_DICOM_IMP_UID,
ImplementationVersion = Constants.EVIL_DICOM_IMP_VERSION,
MaxPDULength = request.UserInfo.MaxPDULength
}
};
return accept;
}
public void RaiseAssociationRequestReceived(Request req, Association asc)
{
if (AssociationRequestReceived != null)
{
AssociationRequestReceived(req, asc);
}
}
public static Message<Request> ReadAssociationRequest(NetworkBinaryReader dr)
{
var rq = new Request();
rq.PresentationContexts = new List<PresentationContext>();
dr.Skip(1); //PDU ID and Reserved Null Byte
int length = LengthReader.ReadBigEndian(dr.Take(4));
using (DICOMBinaryReader sub = dr.GetSubStream(length))
{
rq.ProtocolVersion = LengthReader.ReadBigEndian(sub, 2);
sub.Skip(2); //Reserved Null Bytes
rq.CalledEntityTitle = sub.ReadString(16).Trim();
rq.CallingEntityTitle = sub.ReadString(16).Trim();
sub.Skip(32); //Reserved Null Bytes
rq.ApplicationContext = ItemReader.ReadApplicationContext(sub);
while (sub.Peek(1)[0] == (byte)ItemType.PRESENTATION_CONTEXT_REQUEST)
{
PresentationContext context = ItemReader.ReadPresentationCtxRequest(sub);
rq.PresentationContexts.Add(context);
}
rq.UserInfo = ItemReader.ReadUserInfo(sub);
}
return new Message<Request> { Payload = rq, Type = MessageType.PDU };
}
