/// <summary>
/// Poziva se kad stigne nesto sto nije od ovog gore navedenog
/// </summary>
/// <param name="e"></param>
protected void OnUnknownReceived(ProtocolReceiverEventArgs e)
{
log.Debug("Protocol:OnUnknownReceived");
try
{
if (UnknownReceived != null)
UnknownReceived(this, e);
}
catch (Exception ex)
{
log.Error(ex.ToString());
throw;
}
}
/// <summary>
/// Handler koji se poziva kad stigne poruka koja nije niti ENQ, niti ACK, NAck ...
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void UnknownReceiveHandler(object sender, ProtocolReceiverEventArgs e)
{
try
{
log.Debug("IdleState:UnknownReceiveHandler");
((Protocol)sender).AckTimer.Stop();
((Protocol)sender).AckTimer.Elapsed -= _timerHandler;
if (_message_sent == true)
{
((Protocol)sender).AckTimer.Interval = Timeout.UnknownTimeout;
_timerHandler = new ElapsedEventHandler(bind<object, ElapsedEventArgs, Protocol>(TimeoutUnknownHandler, (Protocol)sender));
((Protocol)sender).AckTimer.Elapsed += _timerHandler;
((Protocol)sender).AckTimer.Start();
}
}
catch (Exception ex)
{
log.Error(ex.ToString());
throw;
}
}
/// <summary>
/// Handler koji se poziva kad stigne ENQ od uredjaja
/// Buduci da uredjaj uvijek ima prednost trebali bi mu odgovorit s ACK-om
/// Ukoliko mi vec pokusavamo poslat poruku onda bi tu poruku trebali spremit i poslat je poslije
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void EnqReceiveHandler(object sender, ProtocolReceiverEventArgs e)
{
try
{
log.Debug("IdleState:EnqReceiveHandler");
((Protocol)sender).AckTimer.Stop();
((Protocol)sender).AckTimer.Elapsed -= _timerHandler;
if (((Protocol)sender).Entity == Entity.Cobas &&
_message_sent == true)
{
((Protocol)sender).AckTimer.Interval = Timeout.EnqTimeOut;
_timerHandler = new ElapsedEventHandler(bind<object, ElapsedEventArgs, Protocol>(TimeoutEnqHandler, (Protocol)sender));
((Protocol)sender).AckTimer.Elapsed += _timerHandler;
((Protocol)sender).AckTimer.Start();
}
else
{
if (_message_sent == true)
{
_pending_messages.Add(_message);
((Protocol)sender).AckTimer.Stop();
((Protocol)sender).AckTimer.Elapsed -= _timerHandler;
}
else
{
((Protocol)sender).ChangeState(Receiver);
}
((Protocol)sender).SendAck();
CleanState();
}
}
catch (Exception ex)
{
log.Error(ex.ToString());
throw;
}
}
/// <summary>
/// Handler koji se poziva kad stigne ACK od uredaja.
/// U idle state-u to znaci da je uredja poslao ACK na nas ENQ
/// Mi onda stopiramo timer, prelazimo u stanje sender i saljemo poruku
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void AckReceiveHandler(object sender, ProtocolReceiverEventArgs e)
{
try
{
log.Debug("IdleState:AckReceiveHandler");
((Protocol)sender).AckTimer.Stop();
((Protocol)sender).AckTimer.Elapsed -= _timerHandler;
if (_message_sent == true)
{
((Protocol)sender).ChangeState(Sender);
((Protocol)sender).State.Send(((Protocol)sender), _message);
CleanState();
}
}
catch (Exception ex)
{
log.Error(ex.ToString());
throw;
}
}
/// <summary>
/// Ovaj handler se pozove kada stigne frame.
/// Trenutno jedini nacin da znam da li je nesto sto je stiglo na seriju/ulazni queue frame
/// je da gledam da li je prvi karakter STX
/// Ako je stigo frame onda provjeravam:
/// - checksum
/// - da li je frame number ispravan (ocekivani frame nuber)
/// - da li sadrzi ETB ili ETX karakter, ovori da li je ovo middle frame ili end frame
/// Ukoliko sve ovo prodje onda sastavljam frameove (ako ih ima vise)
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void FrameReceiveHandler(object sender, ProtocolReceiverEventArgs e)
{
try
{
log.Debug("ReceiverSate:FrameReceiveHandler");
string frame_string = e.Received;
Frame frame = Frame.Create(frame_string);
if (frame.Checksum != Frame.CalculateChecksum(frame).ToString("X2"))
{
log.WarnFormat("FrameReceiveHandler:Invalid checksum: {0} {1}", frame.Checksum, Frame.CalculateChecksum(frame).ToString("X2"));
((Protocol)sender).SendNack();
}
else if(_expected_frame_number != frame.FrameNumber)
{
log.WarnFormat("FrameReceiveHandler:Invalid frame number: {0} {1}", frame.FrameNumber, _expected_frame_number);
((Protocol)sender).SendNack();
}
else if (frame.End != SpecialCharacters.ETX && frame.End != SpecialCharacters.ETB)
{
log.Warn("FrameReceiveHandler:end char is missing");
((Protocol)sender).SendNack();
}
else
{
if (frame.End == SpecialCharacters.ETB)
{
_astm_message.Append(frame.Data);
((Protocol)sender).SendAck();
}
else if (frame.End == SpecialCharacters.ETX)
{
_astm_message.Append(frame.Data);
_message_received = true;
((Protocol)sender).SendAck();
}
_expected_frame_number = ((_expected_frame_number + 1) % CobasFrame.MaxSequenceCount);
}
}
catch (Exception ex)
{
log.Error(ex.ToString());
throw;
}
}
/// <summary>
/// Uredja salje EOT kad je zavrsio sa slanjem, to znaci da je poslo sve frameove i ovo je
/// dobar trenutak za kreirat poruku
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void EotReceiveHandler(object sender, ProtocolReceiverEventArgs e)
{
try
{
log.Debug("ReceiverSate:EotReceiveHandler");
((Protocol)sender).ChangeState(Idle);
if (_message_received == true)
{
string tmp = _astm_message.ToString();
Message message = ((Protocol)sender).Decoder.DecodeMessage(_astm_message.ToString());
if (((Protocol)sender).MessageEvents[message.GetType().Name] != null)
((Protocol)sender).MessageEvents[message.GetType().Name](new MessageReceiveEventArgs() { Flat_Message = _astm_message.ToString(), Message = message });
}
foreach (string pending_message in TransmissionState._pending_messages)
{
Message msg = ((Protocol)sender).Decoder.DecodeMessage(pending_message);
ICommand cmd = new TestRequestBatchCommand((OrderTestRequestBatch)msg, true);
((Protocol)sender).InputCommand.Add(cmd);
((Protocol)sender)._waitHandle.Set();
}
TransmissionState.ClearPendingMessages();
CleanState();
}
catch (DecoderException dex)
{
CleanState();
log.Error(dex.ToString());
smtpLog.Error(dex.ToString());
Debugging.SendAttachment(Debugging.CollectFiles());
}
catch (Exception ex)
{
log.Error(ex.ToString());
throw;
}
}
