HTTP_PREFIX_VERSION
#define HTTP_1_0 HTTP_PREFIX_VERSION "0" /* "HTTP/1.0" */
#define HTTP_VERSION_STR " " HTTP_PREFIX_VERSION
#define HTTP_1_0 HTTP_PREFIX_VERSION "0" /* "HTTP/1.0" */
#define HTTP_LINE1_MINLEN (sizeof(HTTP_PREFIX_VERSION "x 200\n") - 1)
if (!CHECK_AND_SKIP_PREFIX(line, HTTP_PREFIX_VERSION))