flutter_system_proxy 0.2.0

A Flutter Plugin to detect System proxy. When using HTTP client that are not proxy aware this plugin can help with finding the proxy from system settings which then can be used with HTTP Client to mak [...]

example/lib/main.dart

import 'dart:io';
import 'package:dio/adapter.dart';
import 'package:flutter/material.dart';
import 'package:dio/dio.dart';
import 'package:flutter_system_proxy/flutter_system_proxy.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  String _res = "Response";
  void _incrementCounter() {
    fetchLocalHost().then((value) {
      setState(() {
        _counter++;
        _res = value;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
            Text(
              '$_counter:$_res',
              style: Theme.of(context).textTheme.bodyLarge,
            )
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ),
    );
  }
}

Future<String> fetchLocalHost() async {
  try {
    var dio = new Dio();
    var url = 'http://ip-api.com/json';
    var proxy = await FlutterSystemProxy.findProxyFromEnvironment(url);
    (dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
        (HttpClient client) {
      client.findProxy = (uri) {
        return proxy;
      };
      return null;
    };
    var response = await dio.get(url);
    return response.toString();
  } catch (e) {
    print(e);
    return "Error";
  }
}