case "Authorization", "Www-Authenticate", "Cookie", "Cookie2":
		// Permit sending auth/cookie headers from "foo.com"
		// to "sub.foo.com".

		// Note that we don't send all cookies to subdomains
		// automatically. This function is only used for
		// Cookies set explicitly on the initial outgoing
		// client request. Cookies automatically added via the
		// CookieJar mechanism continue to follow each

		{"www-authenticate", "http://foo.com/", "http://bar.com/", false},
		{"authorization", "http://foo.com/", "http://[::1%25.foo.com]/", false},

		// But subdomains should work:
		{"www-authenticate", "http://foo.com/", "http://foo.com/", true},
		{"www-authenticate", "http://foo.com/", "http://sub.foo.com/", true},
		{"www-authenticate", "http://foo.com/", "http://notfoo.com/", false},

const wildcardDNS1123SubdomainErrMsg = "a wildcard DNS-1123 subdomain must start with '*.', followed by a valid DNS subdomain, which must consist of lower case alphanumeric characters, '-' or '.' and end with an alphanumeric character"

// IsWildcardDNS1123Subdomain tests for a string that conforms to the definition of a
// wildcard subdomain in DNS (RFC 1034 section 4.3.3).
func IsWildcardDNS1123Subdomain(value string) []string {

	hostname string
	// If specified, the fully qualified Pod hostname will be "<hostname>.<subdomain>.<pod namespace>.svc.<cluster domain>".
	subDomain string
	// If in k8s, the node where the pod resides
	nodeName string
}

func (c *Controller) NewEndpointBuilder(pod *v1.Pod) *EndpointBuilder {
	var locality, sa, namespace, hostname, subdomain, ip, node string
	var podLabels labels.Instance
	if pod != nil {

    * Updating federation.v1beta1.Cluster API to disallow subdomains as valid cluster names. Only DNS labels are allowed as valid cluster names now.

		hostDomain:        "svc.subdomain.local",
		setHostnameAsFQDN: false,
		expectedHostname:  "test.pod.hostname",
		expectError:       false,
	}, {
		description:       "valid hostDomain, setHostnameAsFQDN true",
		hostname:          "test.pod.hostname",
		hostDomain:        "svc.subdomain.local",
		setHostnameAsFQDN: true,
		expectedHostname:  "test.pod.hostname.svc.subdomain.local",
		expectError:       false,
	}, {

	assert.Equal(t, annotations["foo.admission.k8s.io/key1"], "value1", "admission annotations should not be overwritten")

	// test invalid plugin names
	var testCases = map[string]string{
		"invalid dns subdomain": "INVALID-DNS-Subdomain/policy",
		"no plugin name":        "policy",
		"no key name":           "foo.admission.k8s.io",
		"empty key":             "",
	}
	for name, invalidKey := range testCases {

def test_middleware():
    client = TestClient(app, base_url="http://example.com")
    response = client.get("/")
    assert response.status_code == 200, response.text
    client = TestClient(app, base_url="http://subdomain.example.com")
    response = client.get("/")
    assert response.status_code == 200, response.text
    client = TestClient(app, base_url="http://invalidhost")
    response = client.get("/")

	// INFO: in.HostNetwork opted out of conversion generation
	// INFO: in.HostPID opted out of conversion generation
	// INFO: in.HostIPC opted out of conversion generation
	out.Hostname = in.Hostname
	out.Subdomain = in.Subdomain
	out.SchedulerName = in.SchedulerName
	return nil
}

// Convert_v1_CarpSpec_To_testapigroup_CarpSpec is an autogenerated conversion function.

	// If specified, the fully qualified Carp hostname will be "<hostname>.<subdomain>.<carp namespace>.svc.<cluster domain>".
	// If not specified, the carp will not have a domainname at all.
	// +optional
	Subdomain string `json:"subdomain,omitempty" protobuf:"bytes,17,opt,name=subdomain"`
	// If specified, the carp will be dispatched by specified scheduler.