CWebDavBase::base_OPTIONS

static function base_OPTIONS()
{
	CWebDavBase::SetStatus('200 OK');

	header('MS-Author-Via: DAV');
	header('DAV: '	.join(',', CWebDavBase::$levels));
	header('Allow: '.join(',', CWebDavBase::$methods));
	header('Content-length: 0');
}