/// <summary>
/// Disconnects any open connection to a terminal.
/// </summary>
public void Disconnect()
{
try
{
if (!Connected)
{
Util.Log("Already disconnected.", _remoteEndPoint.Address);
return;
}
_socket.Disconnect(false);
Util.Log("Disconnected.", _remoteEndPoint.Address);
}
catch
{
// Swallow any exceptions. The socket is probably closed.
}
finally
{
// Exit the gatekeeper
if (_useGateKeeper)
{
GateKeeper.Exit(_remoteEndPoint);
}
}
}
public static async Task <NetworkConnection> ConnectAsync(IPEndPoint endPoint, TimeSpan timeout = default(TimeSpan))
{
Util.Log("Connecting to terminal...", endPoint.Address);
// default timeout is five seconds
if (timeout <= TimeSpan.Zero)
{
timeout = TimeSpan.FromSeconds(5);
}
// Enter the gate. This will block until it is safe to connect.
await GateKeeper.EnterAsync(endPoint, timeout);
// Now we can try to connect, using the specified timeout.
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
var connectTask = Task.Factory.FromAsync(
(ep, callback, state) =>
{
try
{
return(socket.BeginConnect(ep, callback, state));
}
catch
{
GateKeeper.Exit(ep);
throw;
}
},
ar =>
{
try
{
socket.EndConnect(ar);
}
catch
{
// Swallow any exceptions. The socket is probably closed.
}
},
endPoint, null);
await TaskEx.WhenAny(connectTask, TaskEx.Delay(timeout));
if (!socket.Connected)
{
socket.Close();
GateKeeper.Exit(endPoint);
throw new TimeoutException("Timeout occurred while trying to connect to the terminal.");
}
Util.Log("Connected!", endPoint.Address);
return(new NetworkConnection(socket, true));
}
public static NetworkConnection Connect(IPEndPoint endPoint, TimeSpan timeout = default(TimeSpan))
{
Util.Log("Connecting to terminal...", endPoint.Address);
// default timeout is five seconds
if (timeout <= TimeSpan.Zero)
{
timeout = TimeSpan.FromSeconds(5);
}
// Enter the gate. This will block until it is safe to connect.
GateKeeper.Enter(endPoint, timeout);
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
// Now we can try to connect, using the specified timeout.
var result = socket.BeginConnect(endPoint, ar =>
{
try
{
socket.EndConnect(ar);
}
catch
{
// Swallow any exceptions. The socket is probably closed.
}
}, null);
result.AsyncWaitHandle.WaitOne(timeout, true);
if (!socket.Connected)
{
socket.Close();
GateKeeper.Exit(endPoint);
throw new TimeoutException("Timeout occurred while trying to connect to the terminal.");
}
}
catch
{
// just in case
GateKeeper.Exit(endPoint);
throw;
}
Util.Log("Connected!", endPoint.Address);
return(new NetworkConnection(socket, true));
}