}
	}
}

func TestServerContentTypeSniff(t *testing.T) { run(t, testServerContentTypeSniff) }
func testServerContentTypeSniff(t *testing.T, mode testMode) {
	cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		i, _ := strconv.Atoi(r.FormValue("i"))
		tt := sniffTests[i]
		n, err := w.Write(tt.data)
		if n != len(tt.data) || err != nil {

}

func newTransportDialTester(t *testing.T, mode testMode) *transportDialTester {
	t.Helper()
	dt := &transportDialTester{
		t:     t,
		dials: make(chan *transportDialTesterConn),
	}
	dt.cst = newClientServerTest(t, mode, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// Write response headers when we receive a request.
		http.NewResponseController(w).EnableFullDuplex()
		w.WriteHeader(200)