Ouzo\DownloadHandler::streamMediaFile PHP Method

    public function streamMediaFile(array $fileData)
    {
        $location = $fileData['path'];
        $filename = $fileData['label'];
        $mimeType = Arrays::getValue($fileData, 'mime', 'application/octet-stream');
        if (!file_exists($location)) {
            header("HTTP/1.1 404 Not Found");
            return;
        }
        $size = filesize($location);
        $time = date('r', filemtime($location));
        $fm = @fopen($location, 'rb');
        if (!$fm) {
            header("HTTP/1.1 505 Internal server error");
            return;
        }
        $begin = 0;
        $end = $size - 1;
        if (isset($_SERVER['HTTP_RANGE'])) {
            if (preg_match('/bytes=\\h*(\\d+)-(\\d*)[\\D.*]?/i', $_SERVER['HTTP_RANGE'], $matches)) {
                $begin = intval($matches[1]);
                if (!empty($matches[2])) {
                    $end = intval($matches[2]);
                }
            }
        }
        if (isset($_SERVER['HTTP_RANGE'])) {
            header('HTTP/1.1 206 Partial Content');
        } else {
            header('HTTP/1.1 200 OK');
        }
        header("Content-Type: {$mimeType}");
        header('Cache-Control: public, must-revalidate, max-age=0');
        header('Pragma: no-cache');
        header('Accept-Ranges: bytes');
        header('Content-Length:' . ($end - $begin + 1));
        if (isset($_SERVER['HTTP_RANGE'])) {
            header("Content-Range: bytes {$begin}-{$end}/{$size}");
        }
        header("Content-Disposition: inline; filename={$filename}");
        header("Content-Transfer-Encoding: binary");
        header("Last-Modified: {$time}");
        $cur = $begin;
        fseek($fm, $begin, 0);
        while (!feof($fm) && $cur <= $end && connection_status() == 0) {
            print fread($fm, min(1024 * 16, $end - $cur + 1));
            $cur += 1024 * 16;
        }
    }

 private function _doActionOnResponse()
 {
     $controller = $this->currentControllerObject;
     $this->_sendHeaders($controller->getHeaders());
     $this->cookiesSetter->setCookies($controller->getNewCookies());
     switch ($controller->getStatusResponse()) {
         case 'show':
             $this->renderOutput();
             break;
         case 'redirect':
             $this->_redirect($controller->getRedirectLocation());
             break;
         case 'redirectOld':
             $this->redirectHandler->redirect($controller->getRedirectLocation());
             break;
         case 'file':
             session_write_close();
             $this->downloadHandler->downloadFile($controller->getFileData());
             break;
         case 'stream':
             session_write_close();
             $this->downloadHandler->streamMediaFile($controller->getFileData());
             break;
     }
 }