internal override void Connect()
{
if (!m_serialPort.IsOpen)
{
CheckPortName(m_SerialPortNames);
m_serialPort.PortName = m_SerialPortNames.ToString();
try
{
m_serialPort.DtrEnable = true;
m_serialPort.RtsEnable = true;
m_serialPort.Open();
}
catch (Exception ex)
{
throw new ComDriveExceptions(ex.Message, ComDriveExceptions.ComDriveException.PortInUse);
}
string text = ConnectionStatus.ConnectionOpened + " with BR" + m_serialPort.BaudRate.ToString() +
"(" + m_serialPort.DataBits.ToString() + ", " + m_serialPort.Parity.ToString() + ", " +
m_serialPort.StopBits.ToString() + ")";
ComDriverLogger.LogConnectionState(DateTime.Now,
Utils.HelperComDriverLogger.GetLoggerChannel(this), text);
}
}
/// <summary>
/// Closes the Socket connection and releases all associated resources.
/// </summary>
public override void Disconnect()
{
if (base.QueueCount != 0)
{
return;
}
if (m_PLCSocket != null)
{
if (m_PLCSocket.Connected)
{
m_PLCSocket.Close();
try
{
ComDriverLogger.LogConnectionState(DateTime.Now,
Utils.HelperComDriverLogger.GetLoggerChannel(this),
ConnectionStatus.ConnectionClosed.ToString());
}
catch
{
}
}
}
}
public override void Disconnect()
{
if (base.QueueCount != 0)
{
return;
}
if (m_serialPort.IsOpen)
{
m_serialPort.Close();
AlreadyInitialized = false;
try
{
ComDriverLogger.LogConnectionState(DateTime.Now,
Utils.HelperComDriverLogger.GetLoggerChannel(this),
ConnectionStatus.ConnectionClosed.ToString());
}
catch
{
}
m_serialPort.Dispose();
}
}
internal void Dispose()
{
// This function literally kills the socket, no matter if the message queue is not empty.
try
{
if (!Disposed)
{
ListenerClientsInfo.DecrementCount(localPort);
Disposed = true;
worker.Close();
if (OnConnectionClosed != null)
{
OnConnectionClosed(this);
}
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString() +
", Remote IP (Client): " + RemoteIP + ", Client GUID: " + guid.ToString());
}
catch
{
}
AbortAll();
}
}
catch (Exception ex)
{
string exceptionText = "InnerListenerClientEcxeption (Dispose)" + " - " + ex.Message;
ComDriverLogger.LogExceptions(DateTime.Now, exceptionText);
}
}
internal void Listen()
{
if (Status == ConnectionStatus.Disconnected)
{
m_ConnectionFlag = ConnectionFlag.None;
try
{
socket.Listen(m_LocalPort);
Status = ConnectionStatus.Listening;
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.Listening.ToString());
}
catch
{
}
}
catch
{
throw new ComDriveExceptions(
"Failed binding local port " + m_LocalPort.ToString() +
". Please check that the port is not in use", ComDriveExceptions.ComDriveException.PortInUse);
}
}
else
{
//GetPLC was called. Therefore since we already listening then there are 2 options:
//1. Socket is not connected and it is listening. When connection will arive then the PLC will be returned
//2. Socket is connected. Therefore On Connect event will not happen and we need to return the PLC right now.
Socket worker = socket.GetWorker();
if (Status == ConnectionStatus.Connected)
{
try
{
PLC plc = PLCFactory.GetPLC(this, 0);
if (OnListenerConnectionAccepted != null)
{
OnListenerConnectionAccepted(plc);
}
}
catch
{
try
{
worker.Close();
}
catch
{
}
}
}
else
{
System.Diagnostics.Debug.Print("Listen request denied... Connection Status: " + Status.ToString());
}
}
}
private void initSocket(Socket socket, int port)
{
try
{
worker = socket;
localPort = port;
IPEndPoint ep = worker.RemoteEndPoint as IPEndPoint;
RemoteIP = ep.Address.ToString();
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionOpened.ToString() + ", Remote IP (Client): " +
RemoteIP + ", Client GUID: " + guid.ToString());
}
catch
{
}
ListenerClientsInfo.IncrementCount(localPort);
waitForData();
}
catch (Exception ex)
{
if (!Disposed)
{
ListenerClientsInfo.DecrementCount(localPort);
}
try
{
worker.Close();
}
catch
{
}
if (!Disposed)
{
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString() +
", Remote IP (Client): " + RemoteIP + ", Client GUID: " + guid.ToString());
}
catch
{
}
}
Disposed = true;
string exceptionText = "InnerListenerClientEcxeption (initSocket)" + " - " + ex.Message;
ComDriverLogger.LogExceptions(DateTime.Now, exceptionText);
AbortAll();
}
}
/// <summary>
/// Closes the Socket connection and releases all associated resources.
/// </summary>
public override void Disconnect()
{
if (base.QueueCount != 0)
{
return;
}
Socket worker = socket.GetWorker();
try
{
AbortAll();
m_ConnectionFlag = ConnectionFlag.DisconnectedStopListening;
socket.Close();
Status = ConnectionStatus.Disconnected;
}
catch
{
}
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString());
}
catch
{
}
if (worker != null)
{
System.Threading.Thread.Sleep(100);
while (worker.Connected)
{
try
{
worker.Close();
}
catch
{
}
System.Threading.Thread.Sleep(100);
}
}
}
void socket_OnSocektError(object sender, SocketError socketError)
{
// Socket error can be caused when Enfora closes the socket.
if (m_ConnectionFlag == ConnectionFlag.DisconnectedStopListening)
{
AbortAll();
socket.Close();
}
else
{
AbortAll();
System.Diagnostics.Debug.Print("Disconnected, back to listen");
if (OnListenerConnectionClosed != null)
{
OnListenerConnectionClosed(this);
}
m_ConnectionFlag = ConnectionFlag.DisconnectedResumeListening;
Status = ConnectionStatus.Listening;
socket.Close();
try
{
socket.Listen(m_LocalPort);
}
catch
{
throw new ComDriveExceptions(
"Failed binding local port " + m_LocalPort.ToString() +
". Please check that the port is not in use", ComDriveExceptions.ComDriveException.PortInUse);
}
try
{
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString());
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.Listening.ToString());
}
catch
{
}
}
}
void socket_OnConnect(object sender, EventArgs e)
{
Status = ConnectionStatus.Connected;
Socket worker = socket.GetWorker();
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionOpened.ToString());
}
catch (Exception ex)
{
// The PLC did not reply... Close the connection and return to Listen mode.
{
worker.Close();
Console.Write(ex.Message);
}
}
try
{
System.Threading.Thread.Sleep(1000);
PLC plc = PLCFactory.GetPLC(this, 0);
if (OnListenerConnectionAccepted != null)
{
OnListenerConnectionAccepted(plc);
}
}
catch (Exception ex)
{
// The PLC did not reply... Close the connection and return to Listen mode.
{
worker.Close();
Console.Write(ex.Message);
}
}
}
internal override void Connect()
{
if (m_PLCSocket != null)
{
if (m_PLCSocket.Connected)
{
return;
}
try
{
m_PLCSocket.Close();
}
catch
{
}
}
if (Protocol == EthProtocol.TCP)
{
m_PLCSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
}
else
{
m_PLCSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
}
SocketState socketState = new SocketState();
socketState.Socket = m_PLCSocket;
socketState.State = SocketState.ConnectionState.Connecting;
bool isHostNameMode = false;
IPAddress ipAddress = null;
try
{
ipAddress = IPAddress.Parse(m_remoteIPorHostName);
}
catch
{
isHostNameMode = true;
}
IPEndPoint PLCIPEndPoint = null;
if (!isHostNameMode)
{
PLCIPEndPoint = new IPEndPoint(ipAddress, Convert.ToInt32(m_remotePort));
}
try
{
if (!isHostNameMode)
{
IAsyncResult result = m_PLCSocket.BeginConnect(PLCIPEndPoint, socketConnect, socketState);
bool success = result.AsyncWaitHandle.WaitOne(connectTimeOut, true);
lock (socketState)
{
if (success)
{
try
{
m_PLCSocket.EndConnect(result);
}
catch
{
socketState.State = SocketState.ConnectionState.Failed;
throw;
}
}
else
{
socketState.State = SocketState.ConnectionState.Failed;
throw new SocketException(10060);
}
}
// Enfora modems Suck. It require a sleep after the connection before data is being sent to it
// Otherwise the communication fails.
Thread.Sleep(500);
}
else
{
IAsyncResult result = m_PLCSocket.BeginConnect(m_remoteIPorHostName, m_remotePort, socketConnect,
socketState);
bool success = result.AsyncWaitHandle.WaitOne(connectTimeOut, true);
lock (socketState)
{
if (success)
{
try
{
m_PLCSocket.EndConnect(result);
}
catch
{
socketState.State = SocketState.ConnectionState.Failed;
throw;
}
}
else
{
socketState.State = SocketState.ConnectionState.Failed;
throw new SocketException(10060);
}
}
// Enfora modems Suck. It require a sleep after the connection before data is being sent to it
// Otherwise the communication fails.
Thread.Sleep(500);
}
string text = ConnectionStatus.ConnectionOpened + " on port " + m_remotePort.ToString();
ComDriverLogger.LogConnectionState(DateTime.Now, Utils.HelperComDriverLogger.GetLoggerChannel(this),
text);
}
catch (SocketException se)
{
if (se.Message.Contains(m_remoteIPorHostName))
{
throw new ComDriveExceptions(se.Message,
ComDriveExceptions.ComDriveException.GeneralCommunicationError);
}
else
{
throw new ComDriveExceptions(se.Message + " " + m_remoteIPorHostName + ":" + m_remotePort,
ComDriveExceptions.ComDriveException.GeneralCommunicationError);
}
}
}
private void onDataReceived(IAsyncResult ar)
{
SocketState socketState = null;
try
{
socketState = (SocketState)ar.AsyncState;
int cbRead = 0;
cbRead = worker.EndReceive(ar);
if (cbRead > 0)
{
byte[] temp = new byte[cbRead];
Array.Copy(socketState.ReceivedData, 0, temp, 0, cbRead);
OnDataReceived(temp);
waitForData();
}
else
{
try
{
if (!Disposed)
{
ListenerClientsInfo.DecrementCount(localPort);
}
worker.Close();
}
catch
{
}
if (!Disposed)
{
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString() +
", Remote IP (Client): " + RemoteIP + ", Client GUID: " + guid.ToString());
}
catch
{
}
Disposed = true;
AbortAll();
if (OnConnectionClosed != null)
{
OnConnectionClosed(this);
}
}
}
}
catch (ObjectDisposedException)
{
try
{
if (!Disposed)
{
ListenerClientsInfo.DecrementCount(localPort);
}
worker.Close();
}
catch
{
}
if (!Disposed)
{
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString() +
", Remote IP (Client): " + RemoteIP + ", Client GUID: " + guid.ToString());
}
catch
{
}
Disposed = true;
AbortAll();
if (OnConnectionClosed != null)
{
OnConnectionClosed(this);
}
}
}
catch (SocketException se)
{
try
{
if (!Disposed)
{
ListenerClientsInfo.DecrementCount(localPort);
}
worker.Close();
}
catch
{
}
if (!Disposed)
{
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString() +
", Remote IP (Client): " + RemoteIP + ", Client GUID: " + guid.ToString());
}
catch
{
}
Disposed = true;
AbortAll();
if (OnConnectionClosed != null)
{
OnConnectionClosed(this);
}
}
}
catch
{
try
{
if (!Disposed)
{
ListenerClientsInfo.DecrementCount(localPort);
}
worker.Close();
}
catch
{
}
if (!Disposed)
{
string channelLog = Utils.HelperComDriverLogger.GetLoggerChannel(this);
try
{
ComDriverLogger.LogConnectionState(DateTime.Now, channelLog,
Unitronics.ComDriver.ConnectionStatus.ConnectionClosed.ToString() +
", Remote IP (Client): " + RemoteIP);
}
catch
{
}
Disposed = true;
AbortAll();
if (OnConnectionClosed != null)
{
OnConnectionClosed(this);
}
}
}
}