IPEndPoint endPoint = new IPEndPoint(IPAddress.Broadcast, 1900);
            

            Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
            s.Connect(endPoint);
            int length = 0;
            byte[] buffer = new byte[10000];
            while (true)
            {
                 
                   length = s.Receive(buffer);

                    string resp = Encoding.ASCII.GetString(buffer, 0, length).ToLower();

                    string sendedString = Encoding.Default.GetString(buffer);

                Debug.WriteLine(sendedString);
                
            }

Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            s.Bind(new IPEndPoint(IPAddress.Any,1900));
            s.SetSocketOption(SocketOptionLevel.IP,SocketOptionName.AddMembership, new MulticastOption(IPAddress.Parse("239.255.255.250"),IPAddress.Any));
            
            int length = 0;
            byte[] buffer = new byte[10000];
            while (true)
            {
                 
                   length = s.Receive(buffer);

                    string resp = Encoding.ASCII.GetString(buffer, 0, length).ToLower();

                    string sendedString = Encoding.Default.GetString(buffer);

                Debug.WriteLine(sendedString);
                
            }