http_major        652 http/ngx_http_parse.c             r->http_major = ch - '0';
http_major        667 http/ngx_http_parse.c             r->http_major = r->http_major * 10 + ch - '0';
http_major        742 http/ngx_http_parse.c     r->http_version = r->http_major * 1000 + r->http_minor;
http_major        556 http/ngx_http_request.h     unsigned                          http_major:16;