System.Net.IPEndPoint.ToString C# (CSharp) Метод

        public override string ToString()
        {
            string format = (_address.AddressFamily == AddressFamily.InterNetworkV6) ? "[{0}]:{1}" : "{0}:{1}";
            return String.Format(format, _address.ToString(), Port.ToString(NumberFormatInfo.InvariantInfo));
        }

        public void messageReceiver()
        {
            UdpClient listener = new UdpClient(receivingPort);
            IPEndPoint groupEP = new IPEndPoint(IPAddress.Any, receivingPort);
            string received_data;
            byte[] receive_byte_array;

            try
            {
                while (true)
                {
                    Console.WriteLine("Waiting for broadcast");
                    receive_byte_array = listener.Receive(ref groupEP);
                    Console.WriteLine("Received a broadcast from {0}", groupEP.ToString());
                    string[] IPHolster = groupEP.ToString().Split(':');
                    checkedIPAddresses.Add(IPHolster[0]);
                    received_data = Encoding.ASCII.GetString(receive_byte_array, 0, receive_byte_array.Length);
                    Console.WriteLine("data follows \n{0}\n\n", received_data);
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
            }
        }