public void AddSendTelegram(Telegram t)
{
t.Build();
lock (_lockSendTelegram)
SendTelegrams.Add(t);
_newSendTelegram.Set();
}
override public void AddSendTelegram(Telegram t)
{
lock (_lockSendTelegrams)
{
t.Build();
SendTelegrams.Enqueue(t);
if (!_newSendTelegram.Task.IsCompleted)
{
_newSendTelegram.SetResult(SendTelegrams.First());
}
Log.AddLog(Log.Severity.EVENT, Name, $"SendTelegrams.Enqueue({t.ToString()})");
}
}
public bool LongTelegramSendWait(Telegram t)
{
try
{
if (CurrentSendTelegram == null)
{
return(false);
}
t.Sequence = CurrentSendTelegram.Sequence;
t.CommSendStatus = CurrentSendTelegram.CommSendStatus;
t.Build();
CurrentSendTelegram.SetCRC();
return(t.CRC == CurrentSendTelegram.CRC);
}
catch (Exception ex)
{
Log?.AddLog(Log.Severity.EXCEPTION, Name, "ServiceCommunicator.LongTelegramSendWait failed", ex.Message);
return(false);
}
}
// Main thread for sending telegrams
public async Task <Telegram> Send(Telegram tel)
{
try
{
if (!Connected)
{
await MyConnect().ConfigureAwait(false);
}
TelegramACK telAck = null;
LastSendTime = DateTime.Now;
tel.Sequence = Sequence;
tel.Build();
// Log?.AddLog(Log.Severity.EVENT, Name, "Communication.SendThread", String.Format("Start sending {0}", tel.ToString()));
await MyWrite(tel.ByteBuffer, 0, tel.Length).ConfigureAwait(false);
Log.AddLog(Log.Severity.EVENT, Name, $"Socket written {tel.ToString()}");
tel.CommSendStatus = Telegram.CommSendStatusEnum.WaitACK;
telAck = new TelegramACK();
await MyRead(telAck.ByteBuffer, 0, telAck.DesignLength()).ConfigureAwait(false);
telAck.ReadBuffer();
telAck.Validate();
if (telAck.Sequence != tel.Sequence)
{
Log.AddLog(Log.Severity.EXCEPTION, Name, $"Sequence does not correspond");
throw new TelegramException("Sequence does not correspond");
}
Sequence = (Sequence < 99) ? (short)(Sequence + 1) : (short)0;
Log.AddLog(Log.Severity.EVENT, Name, $"Send finished : {tel.ToString()}");
return(tel);
}
catch (Exception ex)
{
Log.AddLog(Log.Severity.EXCEPTION, Name, ex.Message);
throw;
}
}
// Main thread for sending telegrams
public override void SendThreading()
{
TelegramACK telAck = null;
try
{
lock (_lockSendTelegram)
{
SendTelegrams.RemoveAll(p => p.CommSendStatus >= Telegram.CommSendStatusEnum.Ack);
}
LastSendTime = DateTime.Now;
Telegram tel = null;
Telegram telNew = null;
while (Thread.CurrentThread.ThreadState == ThreadState.Background)
{
try
{
if (tel == null)
{
lock (_lockSendTelegram)
{
tel = SendTelegrams.FirstOrDefault(prop => prop.CommSendStatus < Telegram.CommSendStatusEnum.Ack);
CurrentSendTelegram = tel;
}
}
if (DateTime.Now - LastSendTime > SendTimeOut)
{
InitSendSocket();
if (tel != null)
{
tel.CommSendStatus = Telegram.CommSendStatusEnum.None;
}
LastSendTime = DateTime.Now;
Retry = 0;
Log?.AddLog(Log.Severity.EXCEPTION, Name, "Communicator.SendThread", "Send timeout, SendSocket reinitialized!");
}
else if (DateTime.Now - LastSendTime > KeepALifeTime && tel == null)
{
Telegram tRes = null;
lock (_lockSendTelegram)
tRes = SendTelegrams.FirstOrDefault(prop => prop.CommSendStatus < Telegram.CommSendStatusEnum.Ack);
if (tRes == null)
{
if (KeepALifeTelegram != null)
{
Telegram t = Activator.CreateInstance(KeepALifeTelegram.GetType()) as Telegram;
t.Sender = MFCS_ID;
t.Receiver = PLC_ID;
t.Build();
tel = t;
Log?.AddLog(Log.Severity.EVENT, Name, "Communicator.SendThread", String.Format("Adding KeepALife telegram"));
}
}
}
else if (!SendSocket.Connected)
{
InitSendSocket();
ConnectSendPartner();
}
else if (tel != null)
{
switch (tel.CommSendStatus)
{
case (Telegram.CommSendStatusEnum.None):
CurrentSendTelegram = tel;
tel.Sequence = Sequence;
tel.Build();
// Log?.AddLog(Log.Severity.EVENT, Name, "Communication.SendThread", String.Format("Start sending {0}", tel.ToString()));
SendSocket.Send(tel.ByteBuffer, tel.Length, SocketFlags.None);
Log?.AddLog(Log.Severity.EVENT, Name, "Communicator.SendThread", String.Format("Socket written {0}", tel.ToString()));
tel.CommSendStatus = Telegram.CommSendStatusEnum.WaitACK;
telAck = new TelegramACK();
SendTime = DateTime.Now;
break;
case (Telegram.CommSendStatusEnum.WaitACK):
int numRead = 0;
int crRead = 0;
do
{
crRead = SendSocket.Receive(telAck.ByteBuffer, numRead, telAck.ByteBuffer.Length - numRead, SocketFlags.None);
if (crRead == 0)
{
throw new TelegramException("Receive bytes is 0.");
}
numRead += crRead;
} while (numRead < telAck.ByteBuffer.Length);
telAck.ReadBuffer();
Log?.AddLog(Log.Severity.EVENT, Name, "Communication.SendThread", String.Format("Received ACK {0}", telAck.ToString()));
if (telAck.Validate() && telAck.Sequence == tel.Sequence)
{
tel.CommSendStatus = Telegram.CommSendStatusEnum.Ack;
LastSendTime = DateTime.Now;
Retry = 0;
if (Sequence < 99)
{
Sequence++;
}
else
{
Sequence = 0;
}
Log?.AddLog(Log.Severity.EVENT, Name, "Communicator.SendThreading", String.Format("Send finished : {0}", tel.ToString()));
NotifySend(tel);
lock (_lockSendTelegram)
telNew = SendTelegrams.FirstOrDefault(prop => prop.CommSendStatus < Telegram.CommSendStatusEnum.Ack);
tel = null;
}
else
{
// tel.CommSendStatus = Telegram.CommSendStatusEnum.None;
Retry++;
Log?.AddLog(Log.Severity.EXCEPTION, Name, "Communicator.SendThreading", String.Format("Retry increased - {0}", Retry));
}
break;
default:
break;
}
}
else
{
WaitHandle.WaitAny(new WaitHandle[] { _newSendTelegram }, 100, true);
}
}
catch (SocketException ex)
{
Log?.AddLog(Log.Severity.EXCEPTION, Name, "Communicator.SendThread::SocketException", ex.Message);
Thread.Sleep(1000);
}
}
catch (TelegramException ex)
{
Log?.AddLog(Log.Severity.EXCEPTION, Name, "Communicator.SendThread::TelegramException", ex.Message);
Thread.Sleep(1000);
}
catch (ThreadAbortException ex)
{
Log?.AddLog(Log.Severity.EXCEPTION, Name, "Communicator.RcvThreading::ThreadAbortException", ex.Message);
return;
}
catch (CommunicationException ex)
{
Log?.AddLog(Log.Severity.EXCEPTION, Name, "Communicator.SendThread::CommunicationException", ex.Message);
Thread.Sleep(1000);
}
catch (Exception ex)
{
Log?.AddLog(Log.Severity.EXCEPTION, Name, "Communicator.SendThread::Exception", ex.Message);
Thread.Sleep(1000);
}
}
