ping

type ICMPResponse struct {
	// Rtt is the round-trip time it took to ping.
	Rtt  time.Duration
	Seq  int
	ID   int
	Code int
	Body []byte
	TTL  int    // time-to-live
	Src  net.IP // source address
	Dst  net.IP // destination address
}

type Ping interface {
	SendIcmp(data []byte) error
	RecvIcmp() (*ICMPResponse, error)
}