internal AssociateAcceptPDU ToPDU(AssociateRequestPDU requestPDU)
{
var pdu = new AssociateAcceptPDU();
requestPDU.CalledAETitle.AsSpan().CopyTo(pdu.CopiedFromAssociateRequestPDU_1);
requestPDU.CallingAETitle.AsSpan().CopyTo(pdu.CopiedFromAssociateRequestPDU_2);
requestPDU.Reserved.AsSpan().CopyTo(pdu.CopiedFromAssociateRequestPDU_3);
pdu.Items.Add(new ApplicationContextItem
{
ApplicationContextName = Encoding.ASCII.GetBytes(NetUtils.DicomApplicationContextName)
});
foreach (var presentationContextResponse in PresentationContextResponses)
{
pdu.Items.Add(presentationContextResponse.ToItem());
}
var userInformationItem = new UserInformationItem();
if (MaxDataTransferPDULength.HasValue)
{
userInformationItem.SubItems.Add(new MaximumLengthSubItem
{
MaximumLength = MaxDataTransferPDULength.Value
});
}
pdu.Items.Add(userInformationItem);
return(pdu);
}
internal AssociateRequestPDU ToPDU()
{
var pdu = new AssociateRequestPDU();
NetUtils.WriteAsciiStringTo(CalledAETitle, pdu.CalledAETitle);
NetUtils.WriteAsciiStringTo(CallingAETitle, pdu.CallingAETitle);
pdu.Items.Add(new ApplicationContextItem
{
ApplicationContextName = Encoding.ASCII.GetBytes(NetUtils.DicomApplicationContextName)
});
foreach (var presentationContextRequest in PresentationContextRequests)
{
pdu.Items.Add(presentationContextRequest.ToItem());
}
var userInformationItem = new UserInformationItem();
if (MaxDataTransferPDULength.HasValue)
{
userInformationItem.SubItems.Add(new MaximumLengthSubItem
{
MaximumLength = MaxDataTransferPDULength.Value
});
}
pdu.Items.Add(userInformationItem);
return(pdu);
}
public AssociationRequest ReceiveAssociationRequest()
{
_associateRequestPDU = (AssociateRequestPDU)ReadNextPDU(DataUnitType.AssociateRequestPDU);
var associationRequest = AssociationRequest.FromPDU(_associateRequestPDU);
MaxDataTransferPDULengthRequestedByPeer = associationRequest.MaxDataTransferPDULength;
return(associationRequest);
}
internal static AssociationRequest FromPDU(AssociateRequestPDU pdu)
{
var associationRequest = new AssociationRequest
{
CalledAETitle = NetUtils.ReadAsciiStringFrom(pdu.CalledAETitle),
CallingAETitle = NetUtils.ReadAsciiStringFrom(pdu.CallingAETitle)
};
foreach (var item in pdu.Items)
{
if (item is ApplicationContextItem applicationContextItem)
{
var applicationContextName = Encoding.ASCII.GetString(applicationContextItem.ApplicationContextName);
if (applicationContextName != NetUtils.DicomApplicationContextName)
{
throw new NotSupportedException($"Unsupported application context name '{applicationContextName}'");
}
}
else if (item is PresentationContextRequestItem presentationContextItem)
{
associationRequest.PresentationContextRequests.Add(PresentationContextRequest.FromItem(presentationContextItem));
}
else if (item is UserInformationItem userInformationItem)
{
foreach (var subItem in userInformationItem.SubItems)
{
if (subItem is MaximumLengthSubItem maximumLengthSubItem)
{
associationRequest.MaxDataTransferPDULength = maximumLengthSubItem.MaximumLength;
}
}
}
}
return(associationRequest);
}
