if mode == http2Mode {
		t.Skip("HTTP/2 Transport doesn't support MaxResponseHeaderBytes")
	}
	ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		if r.URL.Path == "/long" {
			w.Header().Set("Long", strings.Repeat("a", 1<<20))
		}
	})).ts
	c := ts.Client()
	c.Transport.(*Transport).MaxResponseHeaderBytes = 512 << 10

	if res, err := c.Get(ts.URL); err != nil {