private void Listener()
{
while (true)
{
try
{
if (!RecvOn)
{
return;
}
// wait for connection
_client = _tcpListener.AcceptTcpClient();
if (_config.IncomingExtensionNumber != 0)
{
// set to connected and wait for direct dial command
ConnectionState = ConnectionStates.TcpConnected;
}
else
{
// no direct dial command neccessary
ConnectInit();
}
_connectionDirection = ConnectionDirections.In;
StartReceive();
IPAddress remoteAddr = ((IPEndPoint)_client.Client.RemoteEndPoint).Address;
Message?.Invoke($"{LngText(LngKeys.Message_IncomingConnection)} {remoteAddr}");
Logging.Instance.Log(LogTypes.Info, TAG, nameof(Listener), $"incoming connection from {remoteAddr}");
Update?.Invoke();
while (true)
{
if (_client == null)
{
return;
}
if (!_client.Connected)
{
break;
}
}
Disconnect();
_connectionDirection = ConnectionDirections.Out;
}
catch (Exception ex)
{
if (ex.HResult != -2147467259)
{
Logging.Instance.Error(TAG, nameof(Listener), "", ex);
}
Disconnect();
}
}
}
public async Task <bool> ConnectOut(string host, int port, int extensionNumber, bool asciiMode = false)
{
bool status = false;
await Task.Run(() =>
{
try
{
_client = new TcpClient(host, port);
if (_client == null || !_client.Connected)
{
Logging.Instance.Log(LogTypes.Info, TAG, nameof(ConnectOut), $"outgoing connection {host}:{port} failed");
return(false);
}
}
catch (Exception ex)
{
Logging.Instance.Error(TAG, nameof(ConnectOut), "", ex);
return(false);
}
ConnectInit();
ConnectionState = ConnectionStates.TcpConnected;
_connectionDirection = ConnectionDirections.Out;
StartReceive();
// wait for cr/lf
Stopwatch sw = new Stopwatch();
sw.Start();
while (sw.ElapsedMilliseconds < 2000 && ConnectionState == ConnectionStates.TcpConnected)
{
Thread.Sleep(100);
}
sw.Stop();
Update?.Invoke();
if (!asciiMode)
{
//SendVersionCodeCmd();
}
if (!asciiMode)
{
SendVersionCodeCmd();
Thread.Sleep(200);
SendDirectDialCmd(extensionNumber);
Thread.Sleep(200);
}
if (ConnectionState == ConnectionStates.Disconnected)
{
status = true;
return(true);
}
ConnectionState = ConnectionStates.Connected;
Logging.Instance.Info(TAG, nameof(ConnectOut), $"outgoing connection {host}:{port}");
if (asciiMode)
{
ConnectionState = ConnectionStates.AsciiTexting;
SendAsciiText("\n\r");
}
else
{
SendCode(CodeManager.BAU_LTRS, ref _shiftState);
}
Update?.Invoke();
status = true;
return(true);
});
return(status);
}
private void DecodePacket(ItelexPacket packet)
{
/*
* if (packet.CommandType != ItelexCommands.Ack)
* {
* //Logging.Instance.Log(LogTypes.Debug, TAG, nameof(DecodePacket),
* // $"Recv packet {packet.CommandType} {packet.Command:X02} {packet.GetDebugData()}");
* Logging.Instance.Debug(TAG, nameof(DecodePacket),
* $"Recv packet {packet.CommandType} {packet.GetDebugPacket()}");
* }
* if (packet.CommandType != ItelexCommands.Heartbeat && packet.CommandType != ItelexCommands.Ack)
* {
* Debug.WriteLine($"Recv packet {packet.CommandType} {packet.GetDebugPacket()}");
* }
*/
switch ((ItelexCommands)packet.Command)
{
case ItelexCommands.Heartbeat:
Logging.Instance.Debug(TAG, nameof(DecodePacket), $"recv heartbeat {packet.GetDebugPacket()}");
break;
case ItelexCommands.DirectDial:
Logging.Instance.Info(TAG, nameof(DecodePacket), $"recv direct dial cmd {packet.GetDebugPacket()}, number={packet.Data[0]}");
int directDial = packet.Data[0];
Message?.Invoke($"received direct dial cmd {directDial}");
if (directDial == _config.IncomingExtensionNumber)
{
ConnectInit();
}
else
{ // not connected
byte[] data = Encoding.ASCII.GetBytes("nc");
SendCmd(ItelexCommands.Reject, data);
Message?.Invoke($"send reject ncc");
Disconnect();
}
break;
case ItelexCommands.BaudotData:
if (packet.Len > 0)
{
Logging.Instance.AppendBinary(packet.Data, Logging.BinaryModes.Recv);
string asciiStr = CodeManager.BaudotStringToAscii(packet.Data, ref _shiftState, _config.CodeSet, CodeManager.SendRecv.Recv);
Logging.Instance.Debug(TAG, nameof(DecodePacket), $"recv baudot data {packet.Len} \"{CodeManager.AsciiToDebugStr(asciiStr)}\"");
AddReceivedCharCount(packet.Data.Length);
_lastSendRecvIdleMs = Helper.GetTicksMs();
Received?.Invoke(asciiStr);
BaudotSendRecv?.Invoke(packet.Data);
Update?.Invoke();
}
break;
case ItelexCommands.End:
Logging.Instance.Info(TAG, nameof(DecodePacket), $"recv end cmd {packet.GetDebugPacket()}");
Disconnect();
break;
case ItelexCommands.Reject:
string reason = Encoding.ASCII.GetString(packet.Data, 0, packet.Data.Length);
Logging.Instance.Info(TAG, nameof(DecodePacket), $"recv reject cmd {packet.GetDebugPacket()}, reason={reason}");
Message?.Invoke($"{LngText(LngKeys.Message_Reject)} {reason.ToUpper()} ({ReasonToString(reason).ToUpper()})");
if (CentralexState == CentralexStates.CentralexConnect && reason == "na")
{
CentralexState = CentralexStates.CentralexRejected;
}
else
{
Disconnect();
}
break;
case ItelexCommands.Ack:
lock (_sendLock)
{
_n_ack = packet.Data[0];
_ackRecvFlag = true;
_lastAckReceived = Helper.GetTicksMs();
}
//Debug.WriteLine($"recv ack cmd {_n_ack} ({CharsAckCount})");
Logging.Instance.Debug(TAG, nameof(DecodePacket), $"recv ack cmd {packet.GetDebugPacket()} ack={_n_ack} ({CharsAckCount})");
Update?.Invoke();
break;
case ItelexCommands.ProtocolVersion:
string versionStr = "";
if (packet.Data.Length > 1)
{
// get version string
versionStr = Encoding.ASCII.GetString(packet.Data, 1, packet.Data.Length - 1);
versionStr = versionStr.TrimEnd('\x00'); // remove 00-byte suffix
}
Message?.Invoke($"received protocol version {packet.Data[0]:X2} '{versionStr}'");
Logging.Instance.Log(LogTypes.Info, TAG, nameof(DecodePacket), $"recv protocol version cmd {packet.GetDebugPacket()}, version={packet.Data[0]} '{versionStr}'");
if (_connectionDirection == ConnectionDirections.In)
{
// answer with own version
SendVersionCodeCmd();
}
break;
case ItelexCommands.SelfTest:
Logging.Instance.Log(LogTypes.Info, TAG, nameof(DecodePacket), $"recv self test cmd {packet.GetDebugPacket()}");
break;
case ItelexCommands.RemoteConfig:
Logging.Instance.Log(LogTypes.Info, TAG, nameof(DecodePacket), $"recv remote config cmd {packet.GetDebugPacket()}");
break;
case ItelexCommands.RemoteConfirm:
CentralexState = CentralexStates.CentralexConnected;
break;
case ItelexCommands.RemoteCall:
SendAcceptCallRemoteCmd();
ConnectInit();
_connectionDirection = ConnectionDirections.In;
if (_config.IncomingExtensionNumber != 0)
{
// set to connected and wait for direct dial command
ConnectionState = ConnectionStates.TcpConnected;
}
else
{
// no direct dial command neccessary
ConnectInit();
}
Message?.Invoke($"{LngText(LngKeys.Message_IncomingConnection)} centralex");
Logging.Instance.Log(LogTypes.Info, TAG, nameof(Listener), $"incoming connection from centralex");
Update?.Invoke();
break;
}
}
