public static async Task <Socket> ConnectAsync(string host, int port, IPEndPoint localEndPoint, bool doAsync, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var socket = new Socket(SocketType.Stream, ProtocolType.Tcp);
try {
if (localEndPoint != null)
{
socket.Bind(localEndPoint);
}
if (doAsync || cancellationToken.CanBeCanceled)
{
var state = new AsyncConnectState(socket, host, port, cancellationToken);
if (doAsync)
{
await Task.Factory.FromAsync(BeginConnectAsync, EndConnectAsync, state).ConfigureAwait(false);
}
else
{
var ar = socket.BeginConnect(host, port, EndConnect, state);
Wait(ar, cancellationToken);
state.Throw();
}
}
else
{
socket.Connect(host, port);
}
} catch (OperationCanceledException) {
if (socket.Connected)
{
socket.Disconnect(false);
}
socket.Dispose();
throw;
} catch {
socket.Dispose();
throw;
}
return(socket);
}
internal void ConnectToPeer(TorrentManager manager, Peer peer)
{
// Connect to the peer.
var connection = ConnectionFactory.Create(peer.ConnectionUri);
if (connection == null)
{
return;
}
peer.LastConnectionAttempt = DateTime.Now;
var c = new AsyncConnectState(manager, peer, connection);
_pendingConnects.Add(c);
manager.Peers.ConnectingToPeers.Add(peer);
NetworkIO.EnqueueConnect(connection, _endCreateConnectionCallback, c);
}
