appengine-https.php in reCAPTCHA 7.2

File

recaptcha-php/examples/appengine-https.php

<?php

/**
 * @copyright Copyright (c) 2015, Google Inc.
 * @link      https://www.google.com/recaptcha
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

// Redirect to HTTPS by default (for AppEngine)
if (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) {
  if ($_SERVER['HTTP_X_FORWARDED_PROTO'] === 'http') {
    header('HTTP/1.1 301 Moved Permanently');
    header('Location: https://' . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']);
    exit(0);
  }
  else {
    header('Strict-Transport-Security: max-age=63072000; includeSubDomains; preload');
  }
}