StreamedResponseListener.php

<?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\HttpFoundation\StreamedResponse;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * StreamedResponseListener is responsible for sending the Response
 * to the client.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class StreamedResponseListener implements EventSubscriberInterface {

  /**
   * Filters the Response.
   *
   * @param FilterResponseEvent $event A FilterResponseEvent instance
   */
  public function onKernelResponse(FilterResponseEvent $event) {
    if (HttpKernelInterface::MASTER_REQUEST !== $event
      ->getRequestType()) {
      return;
    }
    $response = $event
      ->getResponse();
    if ($response instanceof StreamedResponse) {
      $response
        ->send();
    }
  }
  public static function getSubscribedEvents() {
    return array(
      KernelEvents::RESPONSE => array(
        'onKernelResponse',
        -1024,
      ),
    );
  }

}