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// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
/// @assertion void authenticateProxy=(
/// Future<bool> f(
/// String host,
/// int port,
/// String scheme,
/// String realm
/// )
/// )
/// Sets the function to be called when a proxy is requesting authentication.
/// Information on the proxy in use and the security realm for the authentication
/// are passed in the arguments host, port and realm.
/// The function returns a Future which should complete when the authentication
/// has been resolved. If credentials cannot be provided the Future should
/// complete with false. If credentials are available the function should add
/// these using addProxyCredentials before completing the Future with the value
/// true.
/// If the Future completes with true the request will be retried using the
/// updated credentials. Otherwise response processing will continue normally.
/// @description Checks that this setter sets the function to be called when a
/// site is requesting a proxy authentication. Test Basic authentication
/// @author
import "dart:io";
import 'dart:async';
import "dart:convert";
import "../../../Utils/expect.dart";
test() async {
HttpServer server = await HttpServer.bind(InternetAddress.loopbackIPv4, 0);
server.listen((HttpRequest request) {
var response = request.response;
if (request.headers[HttpHeaders.proxyAuthorizationHeader] == null) {
response.statusCode = HttpStatus.unauthorized;
.set(HttpHeaders.proxyAuthenticateHeader, 'Basic, realm=realm');
response.statusCode = HttpStatus.proxyAuthenticationRequired;
} else {
var authorization = request.headers[HttpHeaders.proxyAuthorizationHeader]?[0];
String encoded = base64.encode(utf8.encode("co19-test:password"));
Expect.equals("Basic ${encoded}", authorization);
HttpClient client = new HttpClient();
client.findProxy = (Uri uri) {
return "PROXY ${InternetAddress.loopbackIPv4.address}:${server.port}";
client.authenticateProxy =
(String host, int port, String scheme, String? realm) {
Expect.equals(InternetAddress.loopbackIPv4.address, host);
Expect.equals(server.port, port);
Expect.equals("Basic", scheme);
Expect.equals("realm", realm);
Completer<bool> completer = new Completer<bool>();
client.addProxyCredentials(InternetAddress.loopbackIPv4.address, port,
"realm", new HttpClientBasicCredentials("co19-test", "password"));
return completer.future;
.then((HttpClientRequest request) => request.close())
.then((HttpClientResponse response) {
response.cast<List<int>>().transform(utf8.decoder).listen((content) {});
main() {