c# – 如何禁用跨域策略请求？

我开始研究unity3d.我只想在Unity3D和Raspberry Pi之间发送/接收数据.我使用套接字编程.但是,当我尝试连接我的Raspberry Pi时,Unity向我发送错误消息“无法连接,因为找不到有效的跨域策略”.为什么需要跨域策略.我只是想在我的电脑和覆盆子之间发送或接收数据.我可以禁用跨域策略请求或如何解决此问题.

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,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());
    }
}

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