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PATH: home / lab2454c / crypto.keyreum.com / vendor / symfony / http-kernel / EventListener

<?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\HttpKernel\EventListener;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\ResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;

/**
 * Ensures that the application is not indexed by search engines.
 *
 * @author Gary PEGEOT <garypegeot@gmail.com>
 */
class DisallowRobotsIndexingListener implements EventSubscriberInterface
{
    private const HEADER_NAME = 'X-Robots-Tag';

public function onResponse(ResponseEvent $event): void
    {
        if (!$event->getResponse()->headers->has(static::HEADER_NAME)) {
            $event->getResponse()->headers->set(static::HEADER_NAME, 'noindex');
        }
    }

/**
     * {@inheritdoc}
     */
    public static function getSubscribedEvents()
    {
        return [
            KernelEvents::RESPONSE => ['onResponse', -255],
        ];
    }
}

[-] ErrorListener.php [edit]
[-] TestSessionListener.php [edit]
[-] DisallowRobotsIndexingListener.php [edit]
[-] SessionListener.php [edit]
[-] ProfilerListener.php [edit]
[-] AddRequestFormatsListener.php [edit]
[+] ..
[-] AbstractSessionListener.php [edit]
[-] DumpListener.php [edit]
[-] SurrogateListener.php [edit]
[-] LocaleAwareListener.php [edit]
[-] FragmentListener.php [edit]
[-] AbstractTestSessionListener.php [edit]
[-] LocaleListener.php [edit]
[-] StreamedResponseListener.php [edit]
[-] DebugHandlersListener.php [edit]
[-] ValidateRequestListener.php [edit]
[-] ResponseListener.php [edit]
[-] RouterListener.php [edit]