private async void testUdpSocketServer(string message)
    {


        DatagramSocket socket = new DatagramSocket();

        socket.MessageReceived += Socket_MessageReceived;

        //You can use any port that is not currently in use already on the machine. We will be using two separate and random
        //ports for the client and server because both the will be running on the same machine.
        string serverPort = "1337";
        string clientPort = "1338";

        //Because we will be running the client and server on the same machine, we will use localhost as the hostname.
        Windows.Networking.HostName serverHost = new Windows.Networking.HostName("255.255.255.255");

        //Bind the socket to the clientPort so that we can start listening for UDP messages from the UDP echo server.
        await socket.BindServiceNameAsync(clientPort);

        //Write a message to the UDP echo server.
        Stream streamOut = (await socket.GetOutputStreamAsync(serverHost, serverPort)).AsStreamForWrite();
        StreamWriter writer = new StreamWriter(streamOut);

        await writer.WriteLineAsync(message);
        await writer.FlushAsync();


    }

    private async void Socket_MessageReceived(DatagramSocket sender,
DatagramSocketMessageReceivedEventArgs args)
    {
        //Read the message that was received from the UDP echo server.
        Stream streamIn = args.GetDataStream().AsStreamForRead();
        StreamReader reader = new StreamReader(streamIn);
        string message = await reader.ReadLineAsync();
    }