engine

type Engine interface {
	Start(n domain.Node, tun bool) error
	Stage() error
	Block() error
	Swap(n domain.Node) error
	TunAdd() error
	TunRemove() error
	Close() error
}

type New func(s domain.Settings, logPath string) Engine

type Probe func(nodes []domain.Node, s domain.Settings, logPath string) (map[string]Result, error)

type Result struct {
	Alive bool
	MS    int
}