NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES  423 src/http/ngx_http_upstream.c     { ngx_string("X-Accel-Expires"), NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES },
NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES 4325 src/http/ngx_http_upstream.c     if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES) {