/// <summary>
/// Transmits the data contained in the frame.
/// </summary>
/// <param name="frame">Frame with the data to be transmitted.</param>
/// <returns>
/// Success:
/// Operation accomplished successfully
/// DisInd:
/// Disconnect indication – connection has been shut down remotely or lost because of communication error.
/// Data is unavailable. To reestablisch the communication the <see cref="IConnectionManagement.ConnectReq"/>
/// must be called first.
/// </returns>
TFrameEndSignalRes ICommunicationLayer.FrameEndSignal(CommunicationLayer.UMessage frame)
{
if (!IsConnected)
{
return(TFrameEndSignalRes.DisInd);
}
try
{
Debug.Assert(m_Socket != null, "We can send a frame only after creating the socket, it can be disposed but must exist");
if (m_Socket.Connected)
{
m_Socket.Send(frame.GetManagedBuffer());
return(TFrameEndSignalRes.Success);
}
this.TraceEvent(TraceEventType.Information, 712, "FrameEndSignal: Disconnected by the remote station.");
}
catch (SocketException ex)
{
MarkSocketException(ex, 718);
}
catch (ObjectDisposedException ex)
{
MarkSocketException(ex, 723);
}
catch (Exception ex)
{
MarkException(String.Format(m_ExceptionMesage, ex.Message), TraceEventType.Error, 728, ex);
}
return(TFrameEndSignalRes.DisInd);
}
/// <summary>
/// Transmits the data contained in the frame.
/// </summary>
/// <param name="frame">Frame with the data to be transmitted.</param>
/// <returns>
/// Success:
/// Operation accomplished successfully
/// DisInd:
/// Disconnect indication – connection has been shut down remotely or lost because of communication error.
/// Data is unavailable
/// </returns>
TFrameEndSignalRes ICommunicationLayer.FrameEndSignal(CommunicationLayer.UMessage frame)
{
TFrameEndSignalRes cRes = TFrameEndSignalRes.Success;
try
{
if (!m_SerialPort.IsOpen)
{
TraceEvent(TraceProgError, 190, "FrameEndSignal is called while in {0} state.", CurrentLayerState);
Debug.Assert(CurrentLayerState != LayerState.Connected);
return(TFrameEndSignalRes.DisInd);
}
byte[] cDataOut = frame.GetManagedBuffer();
m_SerialPort.Write(cDataOut, 0, cDataOut.Length);
Console.WriteLine("FrameEndSignal:" + this.ToString() + "; " + frame.ToString());
}
catch (TimeoutException timeoutex)
{
TraceEvent(TraceCommError, 199, "FrameEndSignal: TimeoutException cought from the underling layer: " + timeoutex.Message);
// chyba zawsze powinnismy poinformowac warstwe wyzsza - bo przeciez skoro zapisujemy - to myslelismy ze jest polaczenie
//(moze i port jest otworzony, lub zamkniety - ale stan naszego communication layer moze byc zupelnie inny)
MarkException("FrameEndSignal: TimeoutException cought from the underling layer", TraceCommError, 205, timeoutex);
cRes = TFrameEndSignalRes.DisInd;
}
catch (Exception ex)
{
if (m_SerialPort.IsOpen)
{
TraceEvent(TraceCommError, 205, "FrameEndSignal: Exception cought from the underling layer: " + ex.Message);
}
else
{
MarkException("FrameEndSignal: Exception cought from the underling layer", TraceCommError, 205, ex);
cRes = TFrameEndSignalRes.DisInd;
}
}
return(cRes);
}
