n  int
}

// called from handler goroutines.
// Notes that the handler for the given stream ID read n bytes of its body
// and schedules flow control tokens to be sent.
func (sc *http2serverConn) noteBodyReadFromHandler(st *http2stream, n int, err error) {
	sc.serveG.checkNotOn() // NOT on
	if n > 0 {
		select {
		case sc.bodyReadCh <- http2bodyReadMsg{st, n}:
		case <-sc.doneServing:
		}
	}
}