title: Is there an INTERNET permission in iOS?
body: <p>i have a weird problem with dio package for flutter on iOS device.
  i wrote an app which sends a GET request to a url. everything works perfectly on Android but looks like the request doesn't go thru on iOS.
  nothing happens no error nothing at all. i had the same problem on android too but i found out that i forgot to add INTERNET permission into my manifest file. i'm guessing the same situation occurring in iOS.</p>
  
  <p>is there any INTERNET permission in iOS that i need to add info.plist ? </p>
  
  <pre><code>void _checkVersionAndPreferences() async {
      SharedPreferences prefs = await SharedPreferences.getInstance();
      String prefsRes = prefs.getString('access_token') ?? '';
      String buildNumber = _packageInfo.buildNumber ?? '1';
      Dio dio = Dio();
      _cancelToken = CancelToken();
      Future.delayed(Duration(seconds: 10), () {
        if (_getRequestSuccess == false) {
          _cancelToken.cancel();
          _checkVersionAndPreferences();
          _showSnackBar(
              content: 'تلاش مجدد برای برقراری ارتباط',
              duration: Duration(seconds: 3),
              leading: Icon(Icons.refresh, color: Colors.black));
        }
      });
      Response response = await dio.get(
          'https://snapmelk.com/api/v1/panel/checkVersion/' + buildNumber,
          cancelToken: _cancelToken);
      try {
        Map respJson = jsonDecode(response.data);
        setState(() {
          _getRequestSuccess = true;
        });
        if (respJson['error']) {
          _showSnackBar(
              content:
                  (respJson['errorMsg'] != null &amp;&amp; respJson['errorMsg'] != '')
                      ? respJson['errorMsg']
                      : 'خطا در اتصال دریافت اطلاعات آخرین نسخه',
              leading: Icon(Icons.warning),
              backgroundColor: Colors.red,
              textColor: Colors.white);
        } else {
          if (respJson['NewUpdate']) {
            _checkDialogAnswer(respJson, prefsRes);
          } else {
            _checkPrefs(prefsRes);
          }
        }
      } catch (e) {
        _showSnackBar(
            content: 'خطا در اتصال با سرور. لطفا در زمانی دیگر مراجعه کنید',
            leading: Icon(Icons.warning),
            backgroundColor: Colors.red,
            textColor: Colors.white);
      }
    }
  </code></pre>