skipif(!http_support(HTTP_SUPPORT_MHASHETAGS), 'need mhash support');
skipif(!defined('HTTP_ETAG_MHASH_CRC32'), 'need CRC32 mhash support');
skipif(!defined('HTTP_ETAG_MHASH_CRC32B'), 'need CRC32B mhash support');
skipif(!http_support(HTTP_SUPPORT_MHASHETAGS), 'need mhash support');
skipif(!defined('HTTP_ETAG_MHASH_CRC32'), 'need CRC32 mhash support');
skipif(!defined('HTTP_ETAG_MHASH_CRC32B'), 'need CRC32B mhash support');