"fmt"
	"strconv"
	"strings"
)

// PortRange represents a range of TCP/UDP ports.  To represent a single port,
// set Size to 1.
type PortRange struct {
	Base int
	Size int
}

// Contains tests whether a given port falls within the PortRange.
func (pr *PortRange) Contains(p int) bool {
	return (p >= pr.Base) && ((p - pr.Base) < pr.Size)
}

// String converts the PortRange to a string representation, which can be

apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
portRange: ""

)

// See ipallocator/controller/repair.go; this is a copy for ports.
type Repair struct {
	interval      time.Duration
	serviceClient corev1client.ServicesGetter
	portRange     net.PortRange
	alloc         rangeallocation.RangeRegistry
	leaks         map[int]int // counter per leaked port

	broadcaster events.EventBroadcaster
	recorder    events.EventRecorder
}

}

type PortAllocator struct {
	portRange net.PortRange

	alloc allocator.Interface

	// metrics is a metrics recorder that can be disabled
	metrics metricsRecorderInterface
}

// PortAllocator implements Interface and Snapshottable
var _ Interface = &PortAllocator{}

// New creates a PortAllocator over a net.PortRange, calling allocatorFactory to construct the backing store.

	type args struct {
		pr net.PortRange
	}
	tests := []struct {
		name string
		args args
		want int
	}{
		{
			name: "default node port range",
			args: args{
				pr: net.PortRange{
					Base: 30000,
					Size: 2768,
				},
			},
			want: 86,
		},
		{
			name: "very small node port range",
			args: args{
				pr: net.PortRange{
					Base: 30000,
					Size: 10,

func Test_validatePortRange(t *testing.T) {
	testCases := []struct {
		portRange string
		expectErr bool
		desc      string
	}{
		{ // case[0]
			portRange: "a-b",
			expectErr: true,
			desc:      "invalid port number",
		},
		{ // case[1]
			portRange: "1-2",
			expectErr: false,
			desc:      "valid",
		},
		{ // case[2]
			portRange: "90-1",
			expectErr: false,

func validatePortRange(portRange string) error {
	strs := strings.Split(portRange, "-")
	if len(strs) != 2 {
		return fmt.Errorf("invalid PortRange: %q", portRange)
	}
	for i := range strs {
		num, err := strconv.Atoi(strs[i])
		if err != nil {
			return fmt.Errorf("invalid PortRange: %q", portRange)
		}
		if num < 0 {
			return fmt.Errorf("invalid PortRange: %q", portRange)
		}
	}
	return nil

    static ReservedPortRange getPortRange(PortDetector portDetector, int startPort, int endPort) {
        ReservedPortRange portRange = new ReservedPortRange(startPort, endPort)
        portRange.portDetector = portDetector
        return portRange
    }

    static boolean isReservedInList(List<ReservedPortRange> reservationList, int startPort, int endPort) {

            reservePortRange()
        }
    }

    private ReservedPortRange reservePortRange() {
        def portRange = getNextPortRange(reservations.size())
        ReservedPortRange range = portRangeFactory.getReservedPortRange(portRange.left, portRange.right)
        reservations.add(range)
        return range
    }

    protected abstract Pair<Integer, Integer> getNextPortRange(int rangeNumber)

	if serverDebugLog {
		fmt.Printf("%s < %d %s\n", sessionID, code, message)
	}
}

func startFTPServer(args []string) {
	var (
		port          int
		publicIP      string
		portRange     string
		tlsPrivateKey string
		tlsPublicCert string
	)

	var err error
	for _, arg := range args {
		tokens := strings.SplitN(arg, "=", 2)
		if len(tokens) != 2 {