Try:
	for try := 0; try < maxTries; try++ {
		ln = newLocalListener(t)
		addr := ln.Addr().String()
		ln.Close()
		t.Logf("Got %v", addr)
		lnc := make(chan net.Listener, 1)
		SetTestHookServerServe(func(s *Server, ln net.Listener) {
			lnc <- ln
		})
		s = &Server{
			Addr:      addr,
			TLSConfig: tlsConf,
		}
		errc := make(chan error, 1)