func isHostIP(ipAddress string) bool {
	host, _, err := net.SplitHostPort(ipAddress)
	if err != nil {
		host = ipAddress
	}
	// Strip off IPv6 zone information.
	if i := strings.Index(host, "%"); i > -1 {
		host = host[:i]
	}
	return net.ParseIP(host) != nil
}

// extractHostPort - extracts host/port from many address formats

	"istio.io/istio/pkg/test/util/retry"
)

//	Virtual service topology
//
//	    a                      b                     c
//	|-------|             |-------|    mirror   |-------|
//	| Host0 | ----------> | Host1 | ----------> | Host2 |
//	|-------|             |-------|             |-------|
//

type VirtualServiceMirrorConfig struct {
	Name       string
	Absent     bool
	Percent    float64
	MirrorHost string
}

		name       string
		tree       *routingNode
		host, path string
		want       string
	}{
		{
			"post",
			buildTree("POST /"), "", "/foo",
			"POST",
		},
		{
			"get",
			buildTree("GET /"), "", "/foo",
			"GET,HEAD",
		},
		{
			"host",
			hostTree, "", "/foo",
			"",
		},
		{
			"host",
			hostTree, "", "/foo/bar",
			"POST",
		},
		{

  creationTimestamp: null
  name: egress-0-istio-autogenerated-k8s-gateway
  namespace: default
spec:
  gateways:
  - mesh
  hosts:
  - google.com
  http:
  - name: default.egress.0
    route:
    - destination:
        host: google.com
        port:
          number: 80
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  annotations:

	if cMatch.PortNumber != 0 && int(cMatch.PortNumber) != port {
		return false
	}
	return true
}

func hostContains(hosts []host.Name, service host.Name) bool {
	for _, h := range hosts {
		if h == service {
			return true
		}
	}
	return false

spec:
  gateways:
  - gateway-conformance-infra/isolation-istio-autogenerated-k8s-gateway-abc-foo-example-com
  hosts:
  - bar.com
  http:
  - match:
    - uri:
        prefix: /abc-foo-example-com
    name: gateway-conformance-infra.attaches-to-abc-foo-example-com-with-hostname-intersection.0
    route:
    - destination:
        host: infra-backend-v1.gateway-conformance-infra.svc.domain.suffix
        port:
          number: 8080
---

		},
		{
			host.Names{"foo.com"},
			host.Names{},
			host.Names{},
		},
		{
			host.Names{},
			host.Names{"bar.com"},
			host.Names{},
		},
		{
			host.Names{"*", "foo.com"},
			host.Names{"foo.com"},
			host.Names{"foo.com"},
		},
		{
			host.Names{"*"},
			host.Names{"foo.com"},
			host.Names{"foo.com"},
		},
		{
			host.Names{"foo.com"},
			host.Names{"Foo.com"},
			host.Names{},
		},

  name: http-0-istio-autogenerated-k8s-gateway
  namespace: default
spec:
  gateways:
  - istio-system/gateway-istio-autogenerated-k8s-gateway-terminate
  hosts:
  - domain.example
  http:
  - name: default.http.0
    route:
    - destination:
        host: httpbin.default.svc.domain.suffix
        port:
          number: 80
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:

func (c *ingressImpl) HTTPSAddresses() ([]string, []int) {
	return c.AddressesForPort(443)
}

// DiscoveryAddresses returns the externally reachable discovery addresses (15012) of the component.
func (c *ingressImpl) DiscoveryAddresses() []netip.AddrPort {
	hosts, ports := c.AddressesForPort(discoveryPort)
	var addrs []netip.AddrPort
	if hosts == nil {

          # don't overwrite /etc/hosts since it's managed by kubeproxy
          #sudo sh -c 'cat /var/run/secrets/istio/bootstrap/hosts >> /etc/hosts'

          # since we're not overwriting /etc/hosts on k8s, verify that istiod hostname in /etc/hosts
          # matches the value generated by istioctl
          echo "checking istio host"
          SYSTEM_HOST=$(cat /etc/hosts | grep istiod)