Actualización

vendor/symfony/security/Http/EntryPoint/BasicAuthenticationEntryPoint.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Security\Http\EntryPoint;
+
+use Symfony\Component\Security\Core\Exception\AuthenticationException;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * BasicAuthenticationEntryPoint starts an HTTP Basic authentication.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class BasicAuthenticationEntryPoint implements AuthenticationEntryPointInterface
+{
+    private $realmName;
+
+    public function __construct($realmName)
+    {
+        $this->realmName = $realmName;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function start(Request $request, AuthenticationException $authException = null)
+    {
+        $response = new Response();
+        $response->headers->set('WWW-Authenticate', sprintf('Basic realm="%s"', $this->realmName));
+        $response->setStatusCode(401);
+
+        return $response;
+    }
+}