{
					Name: "a",
					Call: simulation.Call{
						Port:       80,
						HostHeader: "a.example.com",
						Protocol:   simulation.HTTP,
					},
					Result: simulation.Result{ClusterMatched: "outbound|80||a.default"},
				},
				{
					Name: "b",
					Call: simulation.Call{
						Port:       80,
						HostHeader: "b.example.com",
						Protocol:   simulation.HTTP,
					},

						Port:       80,
						HostHeader: "istio.io",
						Protocol:   simulation.HTTP,
					},
					Result: simulation.Result{
						ListenerMatched: "0.0.0.0_80",
						ClusterMatched:  "outbound|80||istio.io",
					},
				},
				{
					Name: "HTTPS call",
					Call: simulation.Call{
						Address:    "240.240.91.120",
						Port:       443,
						HostHeader: "istio.io",

			{Port: port, Protocol: simulation.HTTP, TLS: simulation.TLS, HostHeader: "foo"},
			{Port: port, Protocol: simulation.HTTP, TLS: simulation.TLS, HostHeader: "foo", Alpn: "http/1.1"},
			{Port: port, Protocol: simulation.TCP, TLS: simulation.Plaintext, HostHeader: "foo"},
			{Port: port, Protocol: simulation.HTTP2, TLS: simulation.TLS, HostHeader: "foo"},
		} {
			suffix := ""

}

func (c Call) FillDefaults() Call {
	if c.Headers == nil {
		c.Headers = http.Header{}
	}
	if c.HostHeader != "" {
		c.Headers["Host"] = []string{c.HostHeader}
	}
	// For simplicity, set SNI automatically for TLS traffic.
	if c.Sni == "" && (c.TLS == TLS) {
		c.Sni = c.HostHeader
	}
	if c.Path == "" {
		c.Path = "/"
	}
	if c.TLS == "" {
		c.TLS = Plaintext
	}
	if c.Address == "" {

						HTTP: echo.HTTP{
							Headers: HostHeader(apps.External.All[0].Config().DefaultHostHeader),
						},
						Port:   echo.Port{Name: "http", ServicePort: 80},
						Scheme: scheme.HTTP,
						Check: check.And(
							check.ErrorOrStatus(tc.statusCode),
						),
					})
				})
			}
		})
}

func HostHeader(header string) http.Header {
	return headers.New().WithHost(header).Build()

	// Internal names used to generate corresponding Envoy matcher.
	methodHeader = ":method"
	pathMatcher  = "path-matcher"
	hostHeader   = ":authority"
)

type rule struct {
	key       string
	values    []string
	notValues []string
	g         generator
	// This generator aggregates value predicates
	extended extendedGenerator
}

		ns = "default"
	}
	return []string{
		c.Service,
		c.Service + "." + ns,
		c.Service + "." + ns + ".svc",
		c.ClusterLocalFQDN(),
	}
}

// HostHeader returns the Host header that will be used for calls to this service.
func (c Config) HostHeader() string {
	if c.DefaultHostHeader != "" {
		return c.DefaultHostHeader
	}
	return c.ClusterLocalFQDN()
}

func (c Config) IsHeadless() bool {

func TestMirroringExternalService(t *testing.T) {
	header := ""
	if len(apps.External.All) > 0 {
		header = apps.External.All.Config().HostHeader()
	}
	runMirrorTest(t, mirrorTestOptions{
		mirrorHost: header,
		cases: []testCaseMirror{
			{
				name:                "mirror-external",
				absent:              true,
				percentage:          100.0,

				opts: echo.CallOptions{
					To: t.Apps.B,
					Port: echo.Port{
						Name: "http",
					},
					HTTP: echo.HTTP{
						Path:            "/foo",
						Headers:         HostHeader("b"),
						FollowRedirects: false,
					},

					Count: 1,
					Check: check.And(
						check.Status(http.StatusMovedPermanently),
						// Note: there is no "80" added, as its already the protocol default

	}

	// Use raw path, we don't want golang normalizing anything since we use this for testing purposes
	httpReq.URL.Opaque = cfg.urlPath

	// Use the host header as the host.
	httpReq.Host = cfg.hostHeader

	// Copy the headers.
	httpReq.Header = cfg.headers.Clone()
	writeForwardedHeaders(&outBuffer, requestID, cfg.headers)

	// Propagate previous response cookies if any
	if cfg.PropagateResponse != nil {