package udpr

type ackManager struct {
	ackNum  uint32
	pending bool
}

func newAckManager() *ackManager {
	return &ackManager{}
}

func (am *ackManager) setPending(k uint32) {
	am.ackNum = k
	am.pending = true
}

func (am *ackManager) isPending(k uint32) bool {
	return am.pending && (am.ackNum == k)
}

func (am *ackManager) clearPending(k uint32) {
	if am.pending && (am.ackNum == k) {
		am.pending = false
	}
}