NGX_HTTP_GZIP_BUFFERED  531 http/modules/ngx_http_gzip_filter_module.c     r->connection->buffered |= NGX_HTTP_GZIP_BUFFERED;
NGX_HTTP_GZIP_BUFFERED  950 http/modules/ngx_http_gzip_filter_module.c     r->connection->buffered &= ~NGX_HTTP_GZIP_BUFFERED;