BroadCast message from Linux to windows using QUDPsocket

I am trying to send a broadcast message from (Raspberry Pi) linux to windows. In my linux system I am using Qt to send broadcast message and in my windows system C# is using to receive data.
I tried to send a broadcast message from my C# (Windows) program to Qt(linux) that worked fine but i didnt succeded to send a broadcast message from my linux system to windows.

Qt code to send boroadcast message

Code:

QUdpSocket          *m_pUDPSocketSend = new QUdpSocket();
 
        m_pUDPSocketSend->connectToHost(QHostAddress("255.255.255.255"), 4220);
         string strVal="I am here\n";
        const char * data = strVal.c_str();
        m_pUDPSocketSend->write(data);

My C# listener code

Code:

private const int listenPort = 4220;
 
    private static void StartListener()
    {
        bool done = false;
 
        UdpClient listener = new UdpClient(listenPort);
        IPEndPoint groupEP = new IPEndPoint(IPAddress.Any, listenPort);
 
        try
        {
            while (!done)
            {
                Console.WriteLine("Waiting for broadcast");
                byte[] bytes = listener.Receive(ref groupEP);
 
                Console.WriteLine("Received broadcast from {0} :\n {1}\n",
                    groupEP.ToString(),
                    Encoding.ASCII.GetString(bytes, 0, bytes.Length));
            }
 
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
        finally
        {
            listener.Close();
        }
    }
 
    public static int Main()
    {
        for (int i = 0; i < 10; i++)
        {
            StartListener();
        } 
 
 
 
        return 0;
    }