impl

var (
	ErrListenerClosed = errors.New("closed")
	ErrListenerEmpty  = errors.New("no listener")
	ErrNotStarted     = errors.New("not started")
	ErrListenTimedOut = errors.New("listen timed out")
)

var (
	ErrNotFound   = errors.New("not found")
	ErrInvalidKey = errors.New("invalid key")
)