ngx_http_proxy_set_vars  205 src/http/modules/ngx_http_proxy_module.c static void ngx_http_proxy_set_vars(ngx_url_t *u, ngx_http_proxy_vars_t *v);
ngx_http_proxy_set_vars  996 src/http/modules/ngx_http_proxy_module.c     ngx_http_proxy_set_vars(&url, &ctx->vars);
ngx_http_proxy_set_vars 3690 src/http/modules/ngx_http_proxy_module.c     ngx_http_proxy_set_vars(&u, &plcf->vars);