void IDicomServerHandler.OnReceiveAssociateRequest(DicomServer server, ServerAssociationParameters association)
{
if (_verifier != null)
{
DicomRejectResult result;
DicomRejectReason reason;
bool verified = _verifier(_context, association, out result, out reason);
if (verified == false)
{
server.SendAssociateReject(result, DicomRejectSource.ServiceUser, reason);
LogAdapter.Logger.Info("Association rejected from {0} to {1}",
association.CallingAE, association.CalledAE);
return;
}
}
// Let the extensions have its say on whether a presentation context is really acceptable.
//
bool atLeastOneAccepted = false;
foreach (byte pcid in association.GetPresentationContextIDs())
{
if (association.GetPresentationContextResult(pcid) == DicomPresContextResult.Accept)
{
IDicomScp <TContext> scp = _extensionList[pcid];
DicomPresContextResult res = scp.VerifyAssociation(association, pcid);
if (res != DicomPresContextResult.Accept)
{
association.GetPresentationContext(pcid).ClearTransfers();
association.SetPresentationContextResult(pcid, res);
}
else
{
atLeastOneAccepted = true;
}
}
}
if (!atLeastOneAccepted)
{
LogAdapter.Logger.Info("None of the proposed presentation context is accepted. Rejecting association from {0} to {1}", association.CallingAE, association.CalledAE);
server.SendAssociateReject(DicomRejectResult.Permanent, DicomRejectSource.ServiceUser, DicomRejectReason.NoReasonGiven);
return;
}
server.SendAssociateAccept(association);
// Optimization to speed query performance
Task.Factory.StartNew(() => LogAdapter.Logger.Info("Received association:\r\n{0}", association.ToString()));
}
void IDicomServerHandler.OnReceiveRequestMessage(DicomServer server, ServerAssociationParameters association, byte presentationID, DicomMessage message)
{
if (message.CommandField == DicomCommandField.CEchoRequest)
{
server.SendCEchoResponse(presentationID, message.MessageId, DicomStatuses.Success);
return;
}
String studyInstanceUid = null;
String seriesInstanceUid = null;
DicomUid sopInstanceUid;
String patientName = null;
bool ok = message.DataSet[DicomTags.SopInstanceUid].TryGetUid(0, out sopInstanceUid);
if (ok)
{
ok = message.DataSet[DicomTags.SeriesInstanceUid].TryGetString(0, out seriesInstanceUid);
}
if (ok)
{
ok = message.DataSet[DicomTags.StudyInstanceUid].TryGetString(0, out studyInstanceUid);
}
if (ok)
{
ok = message.DataSet[DicomTags.PatientsName].TryGetString(0, out patientName);
}
if (!ok)
{
Platform.Log(LogLevel.Error, "Unable to retrieve UIDs from request message, sending failure status.");
server.SendCStoreResponse(presentationID, message.MessageId, sopInstanceUid.UID,
DicomStatuses.ProcessingFailure);
return;
}
TransferSyntax syntax = association.GetPresentationContext(presentationID).AcceptedTransferSyntax;
if (List)
{
Platform.Log(LogLevel.Info, message.Dump());
}
if (Bitbucket)
{
Platform.Log(LogLevel.Info, "Received SOP Instance: {0} for patient {1} in syntax {2}", sopInstanceUid,
patientName, syntax.Name);
server.SendCStoreResponse(presentationID, message.MessageId,
sopInstanceUid.UID,
DicomStatuses.Success);
return;
}
if (!Directory.Exists(StorageLocation))
{
Directory.CreateDirectory(StorageLocation);
}
var path = new StringBuilder();
path.AppendFormat("{0}{1}{2}{3}{4}", StorageLocation, Path.DirectorySeparatorChar,
studyInstanceUid, Path.DirectorySeparatorChar, seriesInstanceUid);
Directory.CreateDirectory(path.ToString());
path.AppendFormat("{0}{1}.dcm", Path.DirectorySeparatorChar, sopInstanceUid.UID);
var dicomFile = new DicomFile(message, path.ToString())
{
TransferSyntaxUid = syntax.UidString,
MediaStorageSopInstanceUid = sopInstanceUid.UID,
ImplementationClassUid = DicomImplementation.ClassUID.UID,
ImplementationVersionName = DicomImplementation.Version,
SourceApplicationEntityTitle = association.CallingAE,
MediaStorageSopClassUid = message.SopClass.Uid
};
dicomFile.Save(DicomWriteOptions.None);
Platform.Log(LogLevel.Info, "Received SOP Instance: {0} for patient {1} in syntax {2}", sopInstanceUid,
patientName, syntax.Name);
server.SendCStoreResponse(presentationID, message.MessageId,
sopInstanceUid.UID,
DicomStatuses.Success);
}
/// <summary>
/// Handle an incoming request
/// </summary>
/// <param name="server"></param>
/// <param name="association"></param>
/// <param name="presentationID"></param>
/// <param name="message"></param>
void IDicomServerHandler.OnReceiveRequestMessage(DicomServer server, ServerAssociationParameters association, byte presentationID, DicomMessage message)
{
log.Info("Message received ... ");
try
{
log.Info(
string.Format("Request recieved with command field {0} from ae {1}",
message.CommandField,
message.CommandSet[DicomTags.SourceApplicationEntityTitle].ToString()));
if (message.CommandField == DicomCommandField.CEchoRequest)
{
server.SendCEchoResponse(presentationID, message.MessageId, DicomStatuses.Success);
return;
}
String studyInstanceUid = null;
String seriesInstanceUid = null;
DicomUid sopInstanceUid = null;
DicomUid sopClassUid = null;
String patientName = null;
bool ok = message.DataSet[DicomTags.SopInstanceUid].TryGetUid(0, out sopInstanceUid);
if (ok)
{
ok = message.DataSet[DicomTags.SeriesInstanceUid].TryGetString(0, out seriesInstanceUid);
}
if (ok)
{
ok = message.DataSet[DicomTags.StudyInstanceUid].TryGetString(0, out studyInstanceUid);
}
if (ok)
{
ok = message.DataSet[DicomTags.PatientsName].TryGetString(0, out patientName);
}
if (ok)
{
ok = message.DataSet[DicomTags.SopClassUid].TryGetUid(0, out sopClassUid);
}
if (!ok)
{
log.Info("Unable to retrieve UIDs from request message, sending failure status.");
server.SendCStoreResponse(presentationID, message.MessageId, sopInstanceUid.UID,
DicomStatuses.ProcessingFailure);
return;
}
TransferSyntax syntax = association.GetPresentationContext(presentationID).AcceptedTransferSyntax;
if (!CacheManager.StorageSpaceAvailable(message, Configuration.Root, Configuration.MaxDiskPercentage))
{
log.Error("Insufficient space to store.");
server.SendCStoreResponse(presentationID, message.MessageId, sopInstanceUid.UID,
DicomStatuses.StorageStorageOutOfResources);
return;
}
log.Info("Adding to cache");
CacheManager.AddToCache(
Configuration,
association,
message,
syntax,
studyInstanceUid,
seriesInstanceUid,
sopInstanceUid.UID,
patientName);
log.Info(string.Format("Received SOP Instance: {0} for patient {1} in syntax {2}", sopInstanceUid,
patientName, syntax.Name));
server.SendCStoreResponse(presentationID, message.MessageId,
sopInstanceUid.UID,
DicomStatuses.Success);
}
catch (Exception ex)
{
server.SendCStoreResponse(presentationID, message.MessageId, message.AffectedSopInstanceUid,
DicomStatuses.ProcessingFailure);
log.Error("Exception thrown " + ex.ToString());
}
}