public void Connect(string hostname, int port)
{
if (string.IsNullOrEmpty(hostname) || port < 1)
{
return;
}
if (!IPAddress.TryParse(hostname, out IPAddress ip))
{
ip = Dns.GetHostAddresses(hostname)[0];
}
if (ip == null)
{
throw new Exception("Could not resolve hostname \"" + hostname + "\"");
}
_socket.BeginConnect(ip.ToString(), port, ar => {
try {
_socket.EndConnect(ar);
if ((( TcpSocket )ar.AsyncState)._socket.Connected)
{
ConnectionSuccessful?.Invoke(this);
}
else
{
ConnectionFailed?.Invoke(this, null);
}
} catch (Exception ex) {
ConnectionFailed?.Invoke(this, ex);
}
}, this);
}
private void SendPing(int tries)
{
if (tries <= 0)
{
if (_ping.Received)
{
Console.WriteLine("Pong received!");
Connected = true;
ConnectionSuccessful?.Invoke(this);
}
else
{
Console.WriteLine("Ping did not come back on time.");
Connected = false;
ConnectionFailed?.Invoke(this, null);
return;
}
}
Task.Run(() => {
_ping = new Ping();
string pingID = _ping.ID;
Send(_ping);
Thread.Sleep(200);
if (_ping.ID == pingID && !_ping.Received)
{
SendPing(--tries);
}
});
}
protected virtual void OnConnectionSuccessful()
{
// DEBUG: Log successful connection.
Log.Debug($"Connection to ('{_address}:{_port}') was successful after ({ConnectionAttempts}) attempt(s).");
ConnectionState = ClientConnectionState.Connected;
ConnectionSuccessful?.Invoke(this, new EventArgs());
}
public void Connect()
{
try
{
_connection.Open();
ConnectionSuccessful?.Invoke(this, new EventArgs());
}
catch (MySqlException e)
{
throw new CouldNotConnectException("Could not connect to Database!", e);
}
}
/// <summary>
/// Connects to the Database.
/// </summary>
/// <exception cref="MissingConnectionStringException" />
/// <exception cref="CouldNotConnectException" />
public void Connect()
{
if (!_isConnectionStringSet)
{
throw new MissingConnectionStringException("ConnectionString not set. Please use MySqlDatabaseManager.SetConnectionString() before.");
}
try
{
_connection.Open();
ConnectionSuccessful?.Invoke(this, new EventArgs());
}
catch (MySqlException e)
{
throw new CouldNotConnectException("Could not connect to Database!", e);
}
}
public void Initiate()
{
listenThread = new Thread(Listener);
listenThread.Start();
socket = hc06.CreateRfcommSocketToServiceRecord(UUID.FromString("00001101-0000-1000-8000-00805f9b34fb"));
try
{
socket.Connect();
Toast.MakeText(context, "Socketverbindung erfolgreich", ToastLength.Long).Show();
ConnectionSuccessful?.Invoke(this, new EventArgs());
}
catch (SocketException e)
{
socket.Close();
Toast.MakeText(context, "Socketverbindung fehlgeschlagen", ToastLength.Long).Show();
ConnectionFailed?.Invoke(this, new EventArgs());
}
}
