} else {
			st.writeDeadline.Reset(deadline.Sub(sc.srv.now()))
		}
	})
	return nil
}

func (w *http2responseWriter) Flush() {
	w.FlushError()
}

func (w *http2responseWriter) FlushError() error {
	rws := w.rws
	if rws == nil {
		panic("Header called after Handler finished")
	}
	var err error
	if rws.bw.Buffered() > 0 {
		err = rws.bw.Flush()