NGX_HTTP_UPSTREAM_IGN_VARY  430 src/http/ngx_http_upstream.c     { ngx_string("Vary"), NGX_HTTP_UPSTREAM_IGN_VARY },
NGX_HTTP_UPSTREAM_IGN_VARY 4489 src/http/ngx_http_upstream.c     if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_VARY) {