}

	if certFile != "" || keyFile != "" {
		if certFile == "" || keyFile == "" {
			log.Fatal("Please provide both a key file and a cert file to enable TLS.")
		}
		serveFunc = func() error {
			return http.ListenAndServeTLS(":8080", certFile, keyFile, nil)
		}
	}

	http.HandleFunc("/", mainHandler)

	log.Print("Listening on :8080")
	log.Fatal(serveFunc())

		log.Fatal(err)
	}
	cfg := &tls.Config{Certificates: []tls.Certificate{cert}}
	srv := &http.Server{
		TLSConfig:    cfg,
		ReadTimeout:  time.Minute,
		WriteTimeout: time.Minute,
	}
	log.Fatal(srv.ListenAndServeTLS("", ""))
}

func ExampleConfig_verifyConnection() {
	// VerifyConnection can be used to replace and customize connection
	// verification. This example shows a VerifyConnection implementation that

// of the server's certificate, any intermediates, and the CA's certificate.
func ListenAndServeTLS(addr, certFile, keyFile string, handler Handler) error {
	server := &Server{Addr: addr, Handler: handler}
	return server.ListenAndServeTLS(certFile, keyFile)
}

// ListenAndServeTLS listens on the TCP network address srv.Addr and
// then calls [ServeTLS] to handle requests on incoming TLS connections.

		s.TLSConfig = tlsOptions.Config
		// Passing empty strings as the cert and key files means no
		// cert/keys are specified and GetCertificate in the TLSConfig
		// should be called instead.
		if err := s.ListenAndServeTLS(tlsOptions.CertFile, tlsOptions.KeyFile); err != nil {
			klog.ErrorS(err, "Failed to listen and serve")
			os.Exit(1)
		}
	} else if err := s.ListenAndServe(); err != nil {

			lnc <- ln
		})
		s = &Server{
			Addr:      addr,
			TLSConfig: tlsConf,
		}
		errc := make(chan error, 1)
		go func() { errc <- s.ListenAndServeTLS("", "") }()
		select {
		case err := <-errc:
			t.Logf("On try #%v: %v", try+1, err)
			continue
		case ln = <-lnc:
			ok = true
			t.Logf("Listening on %v", ln.Addr().String())
			break Try

		{"(*ServeMux).HandleFunc", Method, 0},
		{"(*ServeMux).Handler", Method, 1},
		{"(*ServeMux).ServeHTTP", Method, 0},
		{"(*Server).Close", Method, 8},
		{"(*Server).ListenAndServe", Method, 0},
		{"(*Server).ListenAndServeTLS", Method, 0},
		{"(*Server).RegisterOnShutdown", Method, 9},
		{"(*Server).Serve", Method, 0},
		{"(*Server).ServeTLS", Method, 9},
		{"(*Server).SetKeepAlivesEnabled", Method, 3},