Xamarin Android UDP catch Broadcast from other clients

Issue

I'm trying to get UDP messages send from clients in network, but when I create a new UdpClient I always get the exception:

System.Net.Sockets.SocketException: 'Access denied'

My Code for this very simple and woring perfect on console application, but not in Xamarin App.

public void Demo()
        {
            var Server = new UdpClient(80);
            var ResponseData = Encoding.ASCII.GetBytes("SomeResponseData");

            while (true)
            {
                var ClientEp = new IPEndPoint(IPAddress.Any, 0);
                var ClientRequestData = Server.Receive(ref ClientEp);
                var ClientRequest = Encoding.ASCII.GetString(ClientRequestData);

                Console.WriteLine("Recived {0} from {1}, sending response", ClientRequest, ClientEp.Address.ToString());
                Server.Send(ResponseData, ResponseData.Length, ClientEp);
            }
        }

I also saw this posting but this did not help me at all.

I'm using Android 11 for testing.

Solution

I found another post, this so you cant bind port 80 if you did not root your device.

Answered By - Nils.wtf