Cookies with Dart

foo.dart

import 'dart:convert';
import 'dart:io';

main() async {
  var client = new HttpClient();
  List<Cookies> sessionCookies = []; // Store our cookies here
  
  // Let's login
  var rq = await client.openUrl('POST', 'http://foo.com/login');
  rq.write('username=foo&password=bar');
  
  var rs = await rq.close(); // Response from server
  sessionCookies.addAll(rs.cookies); // Save copies of all cookies from the server. Usually includes a session id token.
  
  rq = await client.openUrl('GET', 'http://foo.com/protected-resource');
  rq.cookies.addAll(sessionCookies); // Send the cookies we've saved
  
  rs = await rq.close();
  
  String body = await rs.transform(UTF8.decoder).join();
  
  print('Protected resource contents: $body');
  
  client.close();
}

Thanks for the useful code.