/**
 * Insert *before* requiring wp-settings.php
 */
if (strpos(strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']), 'https') !== false) {
        $_SERVER['HTTPS'] = 'on';
}

define('FORCE_SSL_ADMIN', true);

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');

/**
 * Insert *after* requiring wp-settings.php
 *
 * Alternatively, you can add this to your child theme's functions.php, or into its own (mu) plugin.
 */
if (function_exists('add_filter')) {
	add_filter('addh_options', function($options) {
		// Another plugin handles the Expires and Cache-Control headers, so disable them in the Add Headers plugin.
		$options['add_expires_header'] = false;
		$options['add_cache_control_header'] = false;

		return $options;
	});
}