How can I disable cross-domain policy request?

Question

I started working on unity3d. I just want to send / receive data between Unity3D and Raspberry Pi. For this, I used socket programming. But when I try to connect my raspberry Pi, Unity sends me the error message "Failed to connect because a valid cross-domain policy was not found." Why cross-domain policy is needed. I just want to send or receive data between my computer and raspberries. Can I turn off cross-domain policy request or how to solve this problem.

public static void StartClient() {
    byte[] bytes = new byte[1024];
    int remotePort = xxxx; // My raspberry port
    try {
        IPHostEntry ipHostInfo = Dns.GetHostEntry("xxx.xxx.xxx.xxx"); //-->> my raspberry IP
        IPAddress ipAddress = ipHostInfo.AddressList[0];
        IPEndPoint remoteEP = new IPEndPoint(ipAddress,remotePort);

        Socket mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp );

        try {
            mySocket.Connect(remoteEP);

            print("Socket connected to" + mySocket.RemoteEndPoint.ToString());

            byte[] msg = Encoding.ASCII.GetBytes("This is a test<EOF>");

            int bytesSent = mySocket.Send(msg);

            int bytesRec = mySocket.Receive(bytes);
            print("Echoed test = " + Encoding.ASCII.GetString(bytes,0,bytesRec));

            mySocket.Shutdown(SocketShutdown.Both);
            mySocket.Close();

            }
        catch (ArgumentNullException ane) {
            print("ArgumentNullException : " + ane.ToString());
        } 
        catch (SocketException se) {
            print("SocketException : " + se.ToString());
        }
        catch (Exception e) {
            print("Unexpected exception : " + e.ToString());
        }

    }
    catch (Exception e) {
        Console.WriteLine( e.ToString());
    }
}

Answer 1

. WWW Sockets. . - 843.

Unity, /Data/Tools/SocketPolicyServer, xml , , -

<?xml version="1.0"?>
<cross-domain-policy>
   <allow-access-from domain="*" to-ports="1200-1220"/> 
</cross-domain-policy>"