system_proxy 0.0.1

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system_proxy #

A Flutter Plugin to get system proxy setting. It is used to proxy for Flutter and Dart HttpClient request。Because Dart HttpClient is adapting the system proxy setting automatically in default, it's difficult to grab requests for testing .

获取系统代理配置。 可用于为flutter的Dart HttpClient的请求设置代理,因为默认Dart请求不会理睬系统代理配置,这对于抓取请求来进行测试等场景造成不小困难。

Getting Started #

Install #

Please add the plugin to pubspec.yaml.

Caution #

It's useful for Android >= 23 .

Usage #


import 'package:system_proxy/system_proxy.dart';


// the proxy value likes:  {port: 8899, host:}
Map<String, String> proxy = await SystemProxy.getProxySettings();
if (proxy != null) {
    print('proxy $proxy');

Setting Proxy for HttpClient #

class ProxiedHttpOverrides extends HttpOverrides {
  String _port;
  String _host;
  ProxiedHttpOverrides(this._host, this._port);

  HttpClient createHttpClient(SecurityContext context) {
    return super.createHttpClient(context)
      // set proxy
      ..findProxy = (uri) {
        return _host != null ? "PROXY $_host:$_port;" : 'DIRECT';

void main() async {
  Map<String, String> proxy = await SystemProxy.getProxySettings();
  if (proxy == null) {
    proxy = {
    'host': null,
    'port': null
  } = new ProxiedHttpOverrides(proxy['host'], proxy['port']);

0.0.1 #

  • Get system proxy setting. 系统代理配置获取, Android >= 23 and IOS


import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:system_proxy/system_proxy.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  _MyAppState createState() => _MyAppState();

class _MyAppState extends State<MyApp> {
  String _proxyStr = 'loading';

  void initState() {

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String proxyStr;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      Map<String, String> proxy = await SystemProxy.getProxySettings();
      if (proxy != null) {
        proxyStr = '${proxy["host"]}:${proxy["port"]}';
      else {
        proxyStr = 'no proxy';
    } on PlatformException {
      proxyStr = 'Failed to get system proxy.';

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _proxyStr = proxyStr;

  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('SystemProxy Plugin example app'),
        body: Center(
          child: Text('proxy setting on: $_proxyStr\n'),

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  system_proxy: ^0.0.1

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:system_proxy/system_proxy.dart';
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Learn more about scoring.

We analyzed this package on Apr 4, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.7.1
  • pana: 0.13.6
  • Flutter: 1.12.13+hotfix.8

Health suggestions

Format lib/system_proxy.dart.

Run flutter format to format lib/system_proxy.dart.

Maintenance suggestions

Package is pre-v0.1 release. (-10 points)

While nothing is inherently wrong with versions of 0.0.*, it might mean that the author is still experimenting with the general direction of the API.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.1.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11 1.14.12
meta 1.1.8
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies