Merge pull request #68238 from justinsb/update_reflect2_to_101

Update reflect2 to 1.0.1 (memory utilization fix)

Kubernetes-commit: a94ea824eb59e92188f166c302d7995ba9002667

vendor/k8s.io/apimachinery/pkg/util/net/interface.go

@@ -53,6 +53,28 @@ type RouteFile struct {
 	parse func(input io.Reader) ([]Route, error)
 }
 
+// noRoutesError can be returned by ChooseBindAddress() in case of no routes
+type noRoutesError struct {
+	message string
+}
+
+func (e noRoutesError) Error() string {
+	return e.message
+}
+
+// IsNoRoutesError checks if an error is of type noRoutesError
+func IsNoRoutesError(err error) bool {
+	if err == nil {
+		return false
+	}
+	switch err.(type) {
+	case noRoutesError:
+		return true
+	default:
+		return false
+	}
+}
+
 var (
 	v4File = RouteFile{name: ipv4RouteFile, parse: getIPv4DefaultRoutes}
 	v6File = RouteFile{name: ipv6RouteFile, parse: getIPv6DefaultRoutes}
@@ -347,7 +369,9 @@ func getAllDefaultRoutes() ([]Route, error) {
 	v6Routes, _ := v6File.extract()
 	routes = append(routes, v6Routes...)
 	if len(routes) == 0 {
-		return nil, fmt.Errorf("No default routes.")
+		return nil, noRoutesError{
+			message: fmt.Sprintf("no default routes found in %q or %q", v4File.name, v6File.name),
+		}
 	}
 	return routes, nil
 }

vendor/k8s.io/apimachinery/pkg/util/validation/validation.go

@@ -21,6 +21,7 @@ import (
 	"math"
 	"net"
 	"regexp"
+	"strconv"
 	"strings"
 
 	"k8s.io/apimachinery/pkg/util/validation/field"
@@ -389,3 +390,18 @@ func hasChDirPrefix(value string) []string {
 	}
 	return errs
 }
+
+// IsSocketAddr checks that a string conforms is a valid socket address
+// as defined in RFC 789. (e.g 0.0.0.0:10254 or [::]:10254))
+func IsValidSocketAddr(value string) []string {
+	var errs []string
+	ip, port, err := net.SplitHostPort(value)
+	if err != nil {
+		return append(errs, "must be a valid socket address format, (e.g. 0.0.0.0:10254 or [::]:10254)")
+		return errs
+	}
+	portInt, _ := strconv.Atoi(port)
+	errs = append(errs, IsValidPortNum(portInt)...)
+	errs = append(errs, IsValidIP(ip)...)
+	return errs
+}