test

            upstreamBase = matched.upstream;

        }

        // The route matches on pathPrefix (e.g. "/bolli"), but the backend is mounted

        // at "/" and knows nothing about that prefix -- forward the remainder only.

        std::string forwardPath = url.substr(matched.pathPrefix.size());

        if (forwardPath.empty() || forwardPath[0] != '/') forwardPath = "/" + forwardPath;

        bool upstreamOk = false;

        try {

            libhttppp::HttpUrl upstream(upstreamBase + url);

            libhttppp::HttpClient client(upstream);

            libhttppp::HttpUrl upstream(upstreamBase + forwardPath);

            // vers=3: try HTTP/3 first, falling back to HTTP/2 then HTTP/1.1 over

            // TLS (or straight to H1 for a cleartext upstream) -- see HttpClient

            // ctor in libhttppp/src/http.cpp for the fallback ladder.

            libhttppp::HttpClient client(upstream, /*vers=*/3);

            libhttppp::HttpRequest outreq;

            outreq.setRequestType(GETREQUEST);

            outreq.setRequestURL(upstream.getPath());