Dart:
একটি ওয়েবপেজ ডাউনলোড করা

dependencies:
  http: ^0.13.3

import 'package:http/http.dart' as http;

Future<void> main() async {
  var url = Uri.parse('http://example.com');
  var response = await http.get(url);
  if (response.statusCode == 200) {
    print('Page downloaded:');
    print(response.body);
  } else {
    print('Request failed with status: ${response.statusCode}.');
  }
}

import 'package:http/http.dart' as http;

Future<void> main() async {
  var headers = {
    'User-Agent': 'YourCustomUserAgent/1.0',
    'Cookie': 'name=value; name2=value2',
  };
  var url = Uri.parse('http://example.com');
  var response = await http.get(url, headers: headers);

  if (response.statusCode == 200) {
    print('Page downloaded with custom headers:');
    print(response.body);
  } else {
    print('Request failed with status: ${response.statusCode}.');
  }
}