"sort"
	"strings"
	"text/tabwriter"

	matcher "github.com/cncf/xds/go/xds/type/matcher/v3"
	listener "github.com/envoyproxy/go-control-plane/envoy/config/listener/v3"
	route "github.com/envoyproxy/go-control-plane/envoy/config/route/v3"
	hcm "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/http_connection_manager/v3"
	tcp "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/tcp_proxy/v3"
	"sigs.k8s.io/yaml"

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net"
	"net/url"
	"os"
	"strings"

	discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3"
	xdsstatus "github.com/envoyproxy/go-control-plane/envoy/service/status/v3"
	"google.golang.org/grpc"
	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"istio.io/api/label"

		iptablesConfigurator: iptablesConfigurator,
		netnsRunner:          NetnsDo,
		hostsideProbeIPSet:   probeSet,
	}
}

func (s *NetServer) Start(ctx context.Context) {
	log.Debug("starting ztunnel server")
	go s.ztunnelServer.Run(ctx)
}

func (s *NetServer) Stop() {
	log.Debug("removing host iptables rules")
	s.iptablesConfigurator.DeleteHostRules()

	log.Debug("destroying host ipset")
	s.hostsideProbeIPSet.Flush()

			"-j", "REDIRECT",
			"--to-port", fmt.Sprintf("%d", DNSCapturePort),
		)
	}

	// CLI: -A ISTIO_OUTPUT -p tcp -m mark --mark 0x111/0xfff -j ACCEPT
	//
	// DESC: If this is outbound and has our mark, let it go.
	iptablesBuilder.AppendRule(
		iptableslog.UndefinedCommand, ChainInpodOutput, iptablesconstants.NAT,
		"-p", "tcp",
		"-m", "mark",
		"--mark", inpodTproxyMark,
		"-j", "ACCEPT",
	)

	return cniConfigFilepath, err
}

// Follows the same semantics as kubelet
// https://github.com/kubernetes/kubernetes/blob/954996e231074dc7429f7be1256a579bedd8344c/pkg/kubelet/dockershim/network/cni/cni.go#L144-L184
func getDefaultCNINetwork(confDir string) (string, error) {
	files, err := libcni.ConfFiles(confDir, []string{".conf", ".conflist"})
	switch {
	case err != nil:
		return "", err
	case len(files) == 0:

			if errors.Is(err, net.ErrClosed) {
				log.Debug("listener closed - returning")
				return
			}

			log.Errorf("failed to accept conn: %v", err)
			continue
		}
		log.Debug("connection accepted")
		go func() {
			log.Debug("handling conn")
			if err := z.handleConn(ctx, conn); err != nil {
				log.Errorf("failed to handle conn: %v", err)
			}
		}()
	}
}

// limitations under the License.

package waypoint

import (
	"cmp"
	"context"
	"fmt"
	"strings"
	"sync"
	"text/tabwriter"
	"time"

	"github.com/hashicorp/go-multierror"
	"github.com/spf13/cobra"
	"k8s.io/apimachinery/pkg/api/errors"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/types"
	gateway "sigs.k8s.io/gateway-api/apis/v1"
	"sigs.k8s.io/yaml"

		// Wait for stop
		fw.WaitForStop()

		return nil
	}

	return fmt.Errorf("failure running port forward process: %v", err)
}

func ClosePortForwarderOnInterrupt(fw kube.PortForwarder) {
	go func() {
		signals := make(chan os.Signal, 1)
		signal.Notify(signals, os.Interrupt)
		defer signal.Stop(signals)
		<-signals
		fw.Close()
	}()
}

package kubeinject

import (
	"bytes"
	"context"
	"crypto/tls"
	"crypto/x509"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net/http"
	"os"
	"sort"
	"strings"
	"time"

	"github.com/hashicorp/go-multierror"
	"github.com/spf13/cobra"
	admission "k8s.io/api/admission/v1"
	admissionv1beta1 "k8s.io/api/admission/v1beta1"
	admissionregistration "k8s.io/api/admissionregistration/v1"
	corev1 "k8s.io/api/core/v1"

// limitations under the License.

package tag

import (
	"cmp"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"strings"
	"text/tabwriter"

	"github.com/spf13/cobra"
	"k8s.io/client-go/kubernetes"
	"k8s.io/client-go/rest"

	"istio.io/istio/istioctl/pkg/cli"
	"istio.io/istio/istioctl/pkg/util"
	"istio.io/istio/istioctl/pkg/util/formatting"
	"istio.io/istio/pkg/config/analysis"