C#

Google.Apis.Requests.RequestError
Request had insufficient authentication scopes. [403]
Errors [
    Message[Insufficient Permission] Location[ - ] Reason[insufficientPermissions] Domain[global]
]

try
            {
                string message = "device=camera;item=ois;command=start;\\r\\n";
                byte[] bytes = Encoding.ASCII.GetBytes(message);
                Socket s = null;
                IPEndPoint hostEndPoint;
                IPAddress hostAddress = null;
                int conPort = 80;

                hostAddress = IPAddress.Parse("127.0.0.1");
                hostEndPoint = new IPEndPoint(hostAddress, 9103);

                // Creates the Socket to send data over a TCP connection.
                s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                s.ReceiveTimeout = 1000*15;

                // Connect to the host using its IPEndPoint.
                s.Connect(hostEndPoint);

                if (!s.Connected)
                {
                    // Connection failed, try next IPaddress.
                    Console.WriteLine("Unable to connect to host");

                }
                s.Send(bytes);
                s.Close();
            }