Flutter web http请求badCertificateCallback答案

【问题标题】：Flutter web http request badCertificateCallbackFlutter web http请求badCertificateCallback
【发布时间】：2020-08-08 05:11:06
【问题描述】：

我想知道您是否可以将我指向具有 http badCertificateCallback 的网络颤振库。我试过DIO，但它给了我一个错误并提交了一个问题，但我还没有收到他们的消息

DIO 代码：

Dio dio = new Dio(options);
(dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
(client) {
client.badCertificateCallback =
(X509Certificate cert, String host, int port) => true;
};

Error: Expected a value of type 'DefaultHttpClientAdapter', but got one of type 'BrowserHttpClientAdapter'

我也试过http，但它没有错误的证书回调，我们可以使用它，但它不兼容网络

HttpClient httpClient = new HttpClient();
    httpClient.badCertificateCallback =
        ((X509Certificate cert, String host, int port) => true);
    IOClient ioClient = new IOClient(httpClient);
response = await ioClient.post(url, body: data, headers: headers);

任何评论都会更有价值。

提前致谢，丹尼尔

【问题讨论】：

那将是一个可怕的安全漏洞。如果您想暂时接受自签名证书，请将其添加到浏览器的受信任证书中。
嗨，@DanielHernandez 我和你有同样的问题，你找到解决问题的方法了吗？
嗨，有 sema 问题。已经有解决方案了吗？

标签： http flutter flutter-web dio

【解决方案1】：

你可以把你的这部分变成这个?

 HttpClient client = new HttpClient();
  client.badCertificateCallback =((X509Certificate cert, String  host, int port) => true);

【讨论】：

【解决方案2】：

我以这种方式将badCertificateCallback 与 DIO 一起使用：

//import 'package:get/get.dart' hide Response hide FormData; //<-- if you use get package
import 'package:dio/dio.dart';

void main(){
  HttpOverrides.global = new MyHttpOverrides();
  runApp(MyApp());
}

class MyHttpOverrides extends HttpOverrides{
  @override
  HttpClient createHttpClient(SecurityContext context){
    return super.createHttpClient(context)
      ..badCertificateCallback = ((X509Certificate cert, String host, int port) {
        final isValidHost = ["192.168.1.67"].contains(host); // <-- allow only hosts in array
        return isValidHost;
      });
  }
}

// more example: https://github.com/flutterchina/dio/tree/master/example
void getHttp() async {
  Dio dio = new Dio();
  Response response;
  response = await dio.get("https://192.168.1.67");
  print(response.data);
}

【讨论】：

【解决方案3】：

像这样做一个http客户端，

import 'dart:convert';
import 'dart:io';
import 'package:dio/adapter.dart';
import 'package:dio/dio.dart';
import 'package:flutter/foundation.dart';
import 'dart:io' as IO;
....
....
....
/// CLIENT
static Future<Dio> _dioClient() async {

Dio dio = Dio(await _getOptions()); // Getting Headers and Other data

if(!kIsWeb){
  (dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
      (IO.HttpClient client) {
    client.badCertificateCallback =
        (X509Certificate cert, String host, int port) => true;
    return client;
  };
}
return dio;                                                             
}

【讨论】：