name:            "k8s service port not set",
			expectedFailure: true,
			k8sServiceHost:  k8sServiceHost,
		},
		{
			name:           "skip TLS verify",
			k8sServiceHost: k8sServiceHost,
			k8sServicePort: k8sServicePort,
			skipTLSVerify:  true,
		},
		{
			name:           "TLS verify",
			k8sServiceHost: k8sServiceHost,
			k8sServicePort: k8sServicePort,
			kubeCAFilepath: kubeCAFilepath,
		},
	}

		"Skip server certificate and domain verification. (NOT SECURE!)")
	cmd.PersistentFlags().BoolVar(&o.Plaintext, "plaintext", viper.GetBool("PLAINTEXT"),
		"Use plain-text HTTP/2 when connecting to server (no TLS).")
}

// ValidateControlPlaneFlags checks arguments for valid values and combinations
func (o *CentralControlPlaneOptions) ValidateControlPlaneFlags() error {
	if o.Xds != "" && o.XdsPodLabel != "" {

// See the License for the specific language governing permissions and
// limitations under the License.

package xds

// xds uses ADSC to call XDS

import (
	"context"
	"crypto/tls"
	"fmt"
	"strings"

	discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"

	"istio.io/istio/istioctl/pkg/clioptions"

	tcpTLS             = []string{"istio-peer-exchange", "istio"}

	protDescrs = map[string][]string{
		"App: HTTP TLS":         httpTLS,
		"App: Istio HTTP Plain": istioHTTPPlaintext,
		"App: TCP TLS":          tcpTLS,
		"App: HTTP":             plaintextHTTPALPNs,
	}
)

func retrieveListenerMatches(l *listener.Listener) []filterchain {
	fChains := getFilterChains(l)

	if err != nil {
		return nil, fmt.Errorf("failed to get application default credentials: %w", err)
	}

	return []grpc.DialOption{
		grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{
			RootCAs:    systemRoots,
			MinVersion: tls.VersionTLS12,
		})),
		grpc.WithPerRPCCredentials(&meshAuthCredentials{
			k8sCreds: k8sCreds,
			gcpCreds: gcpCreds,
			project:  gcpProject,
		}),
	}, nil

   WARNING POD DOES NOT MATCH ANY SUBSETS.  (Non matching subsets v1)
   Matching subsets: 
      (Non-matching subsets v1)
   Traffic Policy TLS Mode: ISTIO_MUTUAL
   Policies: load balancer/connection pool/outlier detection
   Port Level Settings:
    8080:
      TLS Mode: DISABLE
      Policies: load balancer/connection pool/outlier detection
VirtualService: bookinfo
   Route to host "productpage" with weight 30%

		certPool.AppendCertsFromPEM(cc.CABundle)
	} else {
		var err error
		certPool, err = x509.SystemCertPool()
		if err != nil {
			return nil, err
		}
	}
	tlsClientConfig := &tls.Config{RootCAs: certPool, MinVersion: tls.VersionTLS12}
	client := http.Client{
		Timeout: time.Second * 5,
		Transport: &http.Transport{
			TLSClientConfig: tlsClientConfig,
		},
	}
	if cc.Service != nil {

		return err
	}
	checkVerify := func(tls *networking.ClientTLSSettings) bool {
		if tls == nil {
			return false
		}
		if tls.Mode == networking.ClientTLSSettings_DISABLE || tls.Mode == networking.ClientTLSSettings_ISTIO_MUTUAL {
			return false
		}
		return tls.CaCertificates == "" && tls.CredentialName == "" && !tls.InsecureSkipVerify.GetValue()
	}
	checkSNI := func(tls *networking.ClientTLSSettings) bool {

	KubeconfigFilename string
	// The file mode to set when creating the kubeconfig file
	KubeconfigMode int
	// CA file for kubeconfig
	KubeCAFile string
	// Whether to use insecure TLS in the kubeconfig file
	SkipTLSVerify bool

	// KUBERNETES_SERVICE_PROTOCOL
	K8sServiceProtocol string
	// KUBERNETES_SERVICE_HOST
	K8sServiceHost string
	// KUBERNETES_SERVICE_PORT
	K8sServicePort string

import (
	"crypto/x509"
	"encoding/pem"
	"fmt"
	"time"

	envoy_admin "github.com/envoyproxy/go-control-plane/envoy/admin/v3"
	auth "github.com/envoyproxy/go-control-plane/envoy/extensions/transport_sockets/tls/v3"

	"istio.io/istio/istioctl/pkg/util/configdump"
	"istio.io/istio/pkg/log"
)

// SecretItemDiff represents a secret that has been diffed between nodeagent and proxy
type SecretItemDiff struct {