/// <summary>
/// Main processing routine for processing a network connection.
/// </summary>
private void RunRead()
{
try
{
ResetDimseTimeout();
while (!_stop)
{
if (NetworkHasData())
{
ResetDimseTimeout();
bool success = ProcessNextPDU();
if (!success)
{
// Start the Abort process, not much else we can do
Platform.Log(LogLevel.Error,
"Unexpected error processing PDU. Aborting Association from {0} to {1}",
_assoc.CallingAE, _assoc.CalledAE);
SendAssociateAbort(DicomAbortSource.ServiceProvider, DicomAbortReason.InvalidPDUParameter);
}
}
else if (DateTime.Now > GetDimseTimeout())
{
string errorMessage;
switch (State)
{
case DicomAssociationState.Sta6_AssociationEstablished:
OnDimseTimeout();
ResetDimseTimeout();
break;
case DicomAssociationState.Sta2_TransportConnectionOpen:
errorMessage = "ARTIM timeout when waiting for AAssociate Request PDU, closing connection.";
Platform.Log(LogLevel.Error, errorMessage);
State = DicomAssociationState.Sta13_AwaitingTransportConnectionClose;
OnNetworkError(new DicomNetworkException(errorMessage), true);
if (NetworkClosed != null)
NetworkClosed(errorMessage);
break;
case DicomAssociationState.Sta5_AwaitingAAssociationACOrReject:
errorMessage = "ARTIM timeout when waiting for AAssociate AC or RJ PDU, closing connection.";
Platform.Log(LogLevel.Error,errorMessage );
State = DicomAssociationState.Sta13_AwaitingTransportConnectionClose;
OnNetworkError(new DicomNetworkException(errorMessage), true);
if (NetworkClosed != null)
NetworkClosed(errorMessage);
break;
case DicomAssociationState.Sta13_AwaitingTransportConnectionClose:
errorMessage = string.Format(
"Timeout when waiting for transport connection to close from {0} to {1}. Dropping Connection.",
_assoc.CallingAE, _assoc.CalledAE);
Platform.Log(LogLevel.Error, errorMessage);
OnNetworkError(new DicomNetworkException(errorMessage), true);
if (NetworkClosed != null)
NetworkClosed(errorMessage);
break;
default:
Platform.Log(LogLevel.Error, "DIMSE timeout in unexpected state: {0}", State.ToString());
OnDimseTimeout();
ResetDimseTimeout();
break;
}
}
//else
//{
// Thread.Sleep(0);
//}
}
_network.Close();
_network.Dispose();
_network = null;
}
catch (Exception e)
{
OnNetworkError(e, true);
if (NetworkError != null)
NetworkError(e);
}
}
/// <summary>
/// Main processing routine for processing a network connection.
/// </summary>
private void Process()
{
try
{
DateTime timeout = _assoc != null
? DateTime.Now.AddMilliseconds(_assoc.ReadTimeout)
: DateTime.Now.AddSeconds(Timeout);
while (!_stop)
{
if (NetworkHasData())
{
timeout = _assoc != null
? DateTime.Now.AddMilliseconds(_assoc.ReadTimeout)
: DateTime.Now.AddSeconds(Timeout);
bool success = ProcessNextPDU();
if (!success)
{
// Start the Abort process, not much else we can do
Platform.Log(LogLevel.Error,
"Unexpected error processing PDU. Aborting Association from {0} to {1}",
_assoc.CallingAE, _assoc.CalledAE);
SendAssociateAbort(DicomAbortSource.ServiceProvider, DicomAbortReason.InvalidPDUParameter);
}
}
else if (_pduQueue.Count > 0)
{
//SendRawPDU(DequeuePdu());
// Note, if this is ever enabled, it would make sense to reset the timeout at this point.
// So that the timeout is really based on the last data read or written to the network, instead of
// from the last time data was read from the network.
}
else if (DateTime.Now > timeout)
{
string errorMessage;
switch (State)
{
case DicomAssociationState.Sta6_AssociationEstablished:
OnDimseTimeout();
timeout = DateTime.Now.AddMilliseconds(_assoc.ReadTimeout);
break;
case DicomAssociationState.Sta2_TransportConnectionOpen:
errorMessage = "ARTIM timeout when waiting for AAssociate Request PDU, closing connection.";
Platform.Log(LogLevel.Error, errorMessage);
State = DicomAssociationState.Sta13_AwaitingTransportConnectionClose;
OnNetworkError(new DicomNetworkException(errorMessage), true);
if (NetworkClosed != null)
NetworkClosed(errorMessage);
break;
case DicomAssociationState.Sta5_AwaitingAAssociationACOrReject:
errorMessage = "ARTIM timeout when waiting for AAssociate AC or RJ PDU, closing connection.";
Platform.Log(LogLevel.Error,errorMessage );
State = DicomAssociationState.Sta13_AwaitingTransportConnectionClose;
OnNetworkError(new DicomNetworkException(errorMessage), true);
if (NetworkClosed != null)
NetworkClosed(errorMessage);
break;
case DicomAssociationState.Sta13_AwaitingTransportConnectionClose:
errorMessage = string.Format(
"Timeout when waiting for transport connection to close from {0} to {1}. Dropping Connection.",
_assoc.CallingAE, _assoc.CalledAE);
Platform.Log(LogLevel.Error, errorMessage);
OnNetworkError(new DicomNetworkException(errorMessage), true);
if (NetworkClosed != null)
NetworkClosed(errorMessage);
break;
default:
Platform.Log(LogLevel.Error, "DIMSE timeout in unexpected state: {0}", State.ToString());
OnDimseTimeout();
timeout = _assoc != null ? DateTime.Now.AddMilliseconds(_assoc.ReadTimeout) : DateTime.Now.AddSeconds(Timeout);
break;
}
}
//else
//{
// Thread.Sleep(0);
//}
}
_network.Close();
_network.Dispose();
_network = null;
}
catch (Exception e)
{
OnNetworkError(e, true);
if (NetworkError != null)
NetworkError(e);
}
}