ngx_http_proxy_host_variable 99 http/modules/ngx_http_proxy_module.c static ngx_int_t ngx_http_proxy_host_variable(ngx_http_request_t *r, ngx_http_proxy_host_variable 527 http/modules/ngx_http_proxy_module.c { ngx_string("proxy_host"), NULL, ngx_http_proxy_host_variable, 0,