private TFrameEndSignalRes TransmitFrame(out byte[] buff, ICommunicationLayer ComPortCli)
{
buff = get_buffor();
NULL_message message = pool.GetEmptyISesDBuffer();
message.userDataLength = (ushort)buff.Length;
for (int i = 0; i < buff.Length; i++)
{
message.WriteByte(buff[i]);
}
// czas na wyslanie ramki:
ComPortCli.Flush();
string msg = "sending frame: " + buff.Length.ToString() + " size";
m_TraceSource.TraceVerbose(382, "TransmitFrame", msg);
TFrameEndSignalRes lastRes = ComPortCli.FrameEndSignal(message);
m_TraceSource.TraceVerbose(382, "TransmitFrame", "Frame has been sent");
message.ReturnEmptyEnvelope();
return(lastRes);
}
/// <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);
}
