receive

DatagramSocket socket = new DatagramSocket(5001);
 public void Recive()
        {
            WifiManager wifi = (WifiManager)ApplicationContext.GetSystemService(Context.WifiService);
            Android.Net.Wifi.WifiManager.MulticastLock multicastLock = wifi.CreateMulticastLock("MediaPlayer");

            if (multicastLock != null)
            {
                multicastLock.Acquire();
            }
            Android.Net.Wifi.WifiManager.WifiLock castLock = wifi.CreateWifiLock("MediaPlayer");
            if (castLock != null)
            {
                castLock.Acquire();
            }




            Task.Run(async () =>
            {
                socket.Broadcast = true;
                byte[] buf = new byte[1024];
                DatagramPacket packet = new DatagramPacket(buf, buf.Length);
                LinearLayout parent = (LinearLayout)FindViewById(Resource.Id.chat);
              View view = LayoutInflater.Inflate(Resource.Layout.Opponent, parent, false);


                while (true)
                {

                    await socket.ReceiveAsync(packet);
                    if (packet.GetData() != null)
                    {
                        message mess = new message(packet);
                        view.FindViewById<TextView>(Resource.Id.nick).Text = (string)mess.nick;//"Opponent";
                        view.FindViewById<TextView>(Resource.Id.message).Text = (string)mess.mess;
                        parent.AddView(view);

                    }
                }
            });

        }