HEAD_ONLY = 0x0004, /* only send the HEAD request */
SEND_NOCACHE = 0x0008, /* send Pragma: no-cache directive */
ACCEPTRANGES = 0x0010, /* Accept-ranges header was found */
HEAD_ONLY = 0x0004, /* only send the HEAD request */
SEND_NOCACHE = 0x0008, /* send Pragma: no-cache directive */
ACCEPTRANGES = 0x0010, /* Accept-ranges header was found */