internal static extern int SnepSendClientRequest(IntPtr snepHandle, int type, IntPtr ndefMessage, SnepEventCallback callback, IntPtr userData);
internal static extern int SnepRegisterServer(string san, int sap, SnepEventCallback callback, IntPtr userData);
internal static extern int SnepStartClient(IntPtr target, string san, int sap, SnepEventCallback callback, IntPtr userData);