const (
	IPv4 ipFamily = "4"
	IPv6 ipFamily = "6"
)

type HostPortManager interface {
	// Add implements port mappings.
	// id should be a unique identifier for a pod, e.g. podSandboxID.
	// podPortMapping is the associated port mapping information for the pod.
	// natInterfaceName is the interface that localhost uses to talk to the given pod, if known.
	Add(id string, podPortMapping *PodPortMapping, natInterfaceName string) error
	// Remove cleans up matching port mappings
	// Remove must be able to clean up port mappings without pod IP
	Remove(id string, podPortMapping *PodPortMapping) error
}

type PodPortMapping struct {
	Namespace    string
	Name         string
	PortMappings []*PortMapping
	HostNetwork  bool
	IP           net.IP
}

type PortMapping struct {
	HostPort      int32
	ContainerPort int32
	Protocol      v1.Protocol
	HostIP        string
}