readLimit int64 // bytes allowed to be read; owned by readLoop
	// writeErrCh passes the request write error (usually nil)
	// from the writeLoop goroutine to the readLoop which passes
	// it off to the res.Body reader, which then uses it to decide
	// whether or not a connection can be reused. Issue 7569.
	writeErrCh chan error

	writeLoopDone chan struct{} // closed when write loop ends

	defer r.lock.Unlock()
	return r.count
}

func newHandler(responseCh <-chan string, panicCh <-chan interface{}, writeErrCh chan<- error) http.HandlerFunc {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		select {
		case resp := <-responseCh:
			_, err := w.Write([]byte(resp))
			writeErrCh <- err
		case panicReason := <-panicCh:
			panic(panicReason)
		}
	})
}

func TestTimeout(t *testing.T) {