test

                    // hasn't finished draining yet.

                    auto *ext = ensureExt(curreq);

                    ext->streaming.client = std::move(poolGuard.client);

                    ext->streaming.pool = poolGuard.pool;

                    // A Range response with no (or a zero) Content-Length is unexpected --

                    // neither blogi's nor bolli's own media routes ever send one -- and without

                    // a reliable byte count there's no safe way to know whether the body is

                    // actually empty or this connection still has an unknown-length body sitting

                    // unread on the wire. Leaving `pool` null here means ResponseEvent (which

                    // will consider produced(0)>=send_size(0) already "done" without reading

                    // anything) just lets the connection close instead of handing back

                    // something that might still have unread bytes queued -- closing an unused

                    // socket is always safe; pooling a possibly-desynced one is not.

                    ext->streaming.pool = (rangeContentLength > 0) ? poolGuard.pool : nullptr;

                    ext->streaming.origin = poolGuard.origin;

                    ext->streaming.send_size = rangeContentLength;

                    ext->streaming.produced = 0;