Shadowsocks.Util.Sockets.WrappedSocket.BeginConnect C# (CSharp) Method

        public void BeginConnect(EndPoint remoteEP, AsyncCallback callback, object state)
        {
            if (_disposed)
            {
                throw new ObjectDisposedException(GetType().FullName);
            }
            if (Connected)
            {
                throw new SocketException((int) SocketError.IsConnected);
            }

            var arg = new SocketAsyncEventArgs();
            arg.RemoteEndPoint = remoteEP;
            arg.Completed += OnTcpConnectCompleted;
            arg.UserToken = new TcpUserToken(callback, state);

            Socket.ConnectAsync(SocketType.Stream, ProtocolType.Tcp, arg);
        }

            public void Start(byte[] firstPacket, int length, Socket socket, int targetPort)
            {
                this._firstPacket = firstPacket;
                this._firstPacketLength = length;
                this._local = socket;
                try
                {
                    EndPoint remoteEP = SocketUtil.GetEndPoint("127.0.0.1", targetPort);

                    // Connect to the remote endpoint.
                    _remote = new WrappedSocket();
                    _remote.BeginConnect(remoteEP, ConnectCallback, null);
                }
                catch (Exception e)
                {
                    Logging.LogUsefulException(e);
                    this.Close();
                }
            }