Method OnError

library/cpp/neh/http2.cpp:1544–1548

            }

            void OnError() {
                DBGOUT("Srv OnError(" << (!AS_ ? -666 : AS_->Native()) << ")");
                Canceled_ = true;
                AS_->AsyncCancel();
            }

            void OnReadSome(const TErrorCode& ec, size_t amount, IHandlingContext& ctx) {
                if (ec || !amount) {