Method StartNextRequest

library/cpp/neh/http2.cpp:547–574

start next request on keep-alive connection

        //start next request on keep-alive connection
        bool StartNextRequest(THttpRequestRef& req) {
            if (Finalized_) {
                return false;
            }

            {
                //thread safe linking connection->request
                TGuard<TSpinLock> g(SL_);
                Req_ = req;
            }

            RequestWritten_ = false;
            BeginReadResponse_ = false;

            try {
                TErrorCode ec;
                SendRequest(req->BuildRequest(), ec); //throw std::bad_alloc
                if (ec.Value() == ECANCELED) {
                    OnCancel();
                } else if (ec) {
                    OnError(ec);
                }
            } catch (...) {
                OnError(CurrentExceptionMessage());
                throw;
            }
            return true;
        }

        //connection received from cache must be validated before using
        //(process removing closed conection from cache consume some time)