System.Net.Sockets.SingleSocketMultipleConnectAsync.GetNextAddress C# (CSharp) Method

        protected override IPAddress GetNextAddress(out Socket attemptSocket)
        {
            IPAddress rval = null;
            do
            {
                if (_nextAddress >= _addressList.Length)
                {
                    attemptSocket = null;
                    return null;
                }

                rval = _addressList[_nextAddress];
                ++_nextAddress;
            }
            while (!_socket.CanTryAddressFamily(rval.AddressFamily));

            if (SocketPal.SupportsMultipleConnectAttempts)
            {
                attemptSocket = _socket;
            }
            else
            {
                attemptSocket = new Socket(_socket.AddressFamily, _socket.SocketType, _socket.ProtocolType);
                if (_socket.AddressFamily == AddressFamily.InterNetworkV6 && _socket.DualMode)
                {
                    attemptSocket.DualMode = true;
                }
            }

            return rval;
        }