nette-https-behind-proxy.php

<?php

// hack for https proxies
if (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) {
	if ($_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https' && isset($_SERVER['SERVER_PORT']) && in_array($_SERVER['SERVER_PORT'], [80, 82])) { // https over proxy
		$_SERVER['HTTPS'] = 'On';
		$_SERVER['SERVER_PORT'] = 443;

	} elseif ($_SERVER['HTTP_X_FORWARDED_PROTO'] === 'http' && isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == 80) { // http over proxy
		$_SERVER['HTTPS'] = 'Off';
		$_SERVER['SERVER_PORT'] = 80;
	}
}