Upstream module usage to process data

[isolomka]

Thanks for the answers.

Does upstream works correctly with thread pool enabled?
I see some strange validation in ngx_http_upstream_init_request()
    if (r->aio) {
        return;
    }
that flag is set when thread pool is enabled.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,274486,274543#msg-274543