/// <summary>
/// Tyr to disconnect and then connect again
/// </summary>
private void Reconnect()
{
Logger.WriteDebug($"{decoderName}: reconnect -> start");
//Set status
decoderStatus = ConnectionStatus.Reconnecting;
//Raise event
Connecting.RaiseEvent(this, null);
//Stop timeouts
receiveTimeout.Stop();
sendTimeout.Stop();
connectTimeout.Stop();
if (reconnectAttempts == 0)
{
//Start reconnect immediately
reconnectTimer_Elapsed(this, null);
}
else
{
//Start reconnect after timer elapsed
reconnectTimer.Start();
}
//Increase counter
reconnectAttempts++;
}
private void StartListening()
{
if (decoderStatus == ConnectionStatus.Listening ||
decoderStatus == ConnectionStatus.ClientConnected)
{
return;
}
Logger.WriteDebug($"{decoderName}: Start to listening");
decoderStatus = ConnectionStatus.Listening;
//Raise event
Connecting.RaiseEvent(this, null);
// Bind the socket to the local endpoint and listen for incoming connections
var _localEP = new IPEndPoint(decoderIpAddress, decoderPort);
listenerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
listenerSocket.Bind(_localEP);
listenerSocket.Listen(1);
// Start an asynchronous socket to listen for connections.
Logger.WriteDebug($"{decoderName}: Waiting for client");
listenerSocket.BeginAccept(AcceptCallback, listenerSocket);
}
catch (Exception ex)
{
Logger.WriteDebug($"{decoderName}: {ex} -> {ex.Message}");
}
}
/// <summary>
/// Tyr to disconnect and then connect again
/// </summary>
private void Restart()
{
Logger.WriteDebug($"{decoderName}: Auto-Restart start");
decoderStatus = ConnectionStatus.Restart;
//Raise event
Connecting.RaiseEvent(this, null);
//Start reconnect after timer elapsed
restartTimer.Interval = restartAttempts == 0 ? 1000 : restartAttempts * 60000;
restartTimer.Start();
}
public void Start()
{
try
{
Logger.WriteDebug(MethodBase.GetCurrentMethod(), "Starting");
var stopWatch = new Stopwatch();
stopWatch.Start();
IsRunning = false;
if (_decoderPort <= 0 || _decoderPort >= 65535)
{
Logger.WriteDebug($"{_decoderName}: Wrong setting -> decoderPort");
Disconnected.RaiseEvent(this, null);
return;
}
//Raise event
Connecting.RaiseEvent(this, null);
if (TryStartListener() == false)
{
Logger.WriteDebug($"{_decoderName}: try to make url reservation");
NetAclChecker.AddAddress($"http://+:{_decoderPort}/");
if (TryStartListener() == false)
{
Logger.WriteDebug($"{_decoderName}: unable to start listener");
return;
}
}
//Raise event
Connected.RaiseEvent(this, null);
IsRunning = true;
stopWatch.Stop();
Logger.WriteDebug(MethodBase.GetCurrentMethod(), $"Started -> {stopWatch.Elapsed}");
}
catch (Exception ex)
{
Logger.WriteDebug($"{_decoderName}: {ex} -> {ex.Message}");
}
}
/// <summary>
/// Try connecting to the remote host
/// </summary>
private void Connect()
{
Logger.WriteDebug($"{decoderName}: connect -> start");
//Set status
decoderStatus = ConnectionStatus.Connecting;
//Raise event
Connecting.RaiseEvent(this, null);
try
{
//Release decoder
if (decoderSocket != null)
{
decoderSocket.Close();
decoderSocket = null;
}
//Parse server host/ip
Logger.WriteDebug($"{decoderName}: connect -> server({decoderServer})");
if (Regex.IsMatch(decoderServer,
@"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$")
)
{
// the string is a IP
decoderIpAddress = IPAddress.Parse(decoderServer);
}
else if (Regex.IsMatch(decoderServer,
@"^(([a-zA-Z]|[a-zA-Z][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z]|[A-Za-z][A-Za-z0-9\-]*[A-Za-z0-9])$"))
{
// the string is a host -> try to resolve
var _ipHostInfo = Dns.GetHostEntry(decoderServer);
foreach (var ipAdress in _ipHostInfo.AddressList)
{
if (Regex.IsMatch(ipAdress.ToString(),
@"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$")
)
{
decoderIpAddress = ipAdress;
break;
}
}
//If resolve fail -> abort
if (decoderIpAddress == null)
{
Logger.WriteDebug($"{decoderName}: cannot resolve hostname {decoderServer}");
Disconnected.RaiseEvent(this, null);
return;
}
}
Logger.WriteDebug($"{decoderName}: connect -> ip({decoderIpAddress})");
//Create a TCP/IP socket
var _remoteEP = new IPEndPoint(decoderIpAddress, decoderPort);
decoderSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//Start timer for timeout
connectTimeout.Start();
//Connect to the remote endpoint
decoderSocket.BeginConnect(_remoteEP, ConnectCallback, decoderSocket);
}
catch (SocketException ex)
{
Logger.WriteDebug($"{decoderName}: connect -> {ex.Message}");
//Start reconnect
Reconnect();
}
catch (Exception ex)
{
Logger.WriteDebug($"{decoderName}: {ex} -> {ex.Message}");
}
}
