NGX_HTTP_BAD_GATEWAY  598 http/ngx_http_upstream.c             ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
NGX_HTTP_BAD_GATEWAY  843 http/ngx_http_upstream.c         ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
NGX_HTTP_BAD_GATEWAY 2837 http/ngx_http_upstream.c             status = NGX_HTTP_BAD_GATEWAY;
NGX_HTTP_BAD_GATEWAY 3000 http/ngx_http_upstream.c         if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {