What is ExtendedSocket exception and how can I fix it?

Question

I am getting an error whenever I try to send data to a server in c# using System.Net.Sockets and Xamarin. I am only getting this error when sending data but not connecting. The error message is "Exception thrown: 'System.Net.Internals.SocketExceptionFactory.ExtendedSocketException' in System.Net.Sockets.dll" I am not sure how to fix this but here is my connection code running when a button is pressed.

        Label label = this.FindByName<Label>("label");
        Socket sock;

        string ipI = "127.0.0.1";
        int portI = 6419;

        IPAddress ipAddress = IPAddress.Parse(ipI);

        IPEndPoint remoteEndPoint = new IPEndPoint(ipAddress, portI);

        sock = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
        sock.Connect(remoteEndPoint);
        byte[] sData = Encoding.ASCII.GetBytes(num);
        sock.Send(sData);
        label.Text = "Added 1 to server";
        sock.Dispose();

Answer 1

instead of websocket try using tcpclient:

        try
        {
            TcpClient client = new TcpClient(127.0.0.1, 6419);

            NetworkStream ns = client.GetStream();

            byte[] bytes = new byte[1024];
            int bytesRead = await ns.ReadAsync(bytes, 0, bytes.Length);
            string result = Encoding.ASCII.GetString(bytes, 0, bytesRead);

            client.Close();
            return result;
        }

        catch (Exception e)
        {
            return null;
        }