func main() {
flag.Parse()
if *helpFlag {
printHelpAndExit()
}
if *verboseFlag {
arping.EnableVerboseLog()
}
arping.SetTimeout(*timeoutFlag)
if len(flag.Args()) != 1 {
fmt.Println("Parameter <IP> missing!")
printHelpAndExit()
}
dstIP := net.ParseIP(flag.Arg(0))
var hwAddr net.HardwareAddr
var durationNanos time.Duration
var err error
if len(*ifaceNameFlag) > 0 {
hwAddr, durationNanos, err = arping.PingOverIfaceByName(dstIP, *ifaceNameFlag)
} else {
hwAddr, durationNanos, err = arping.Ping(dstIP)
}
// ping timeout
if err == arping.ErrTimeout {
fmt.Println(err)
os.Exit(1)
}
// ping failed
if err != nil {
fmt.Println(err)
os.Exit(2)
}
// ping success
durationMicros := durationNanos / 1000
var durationString string
if durationMicros > 1000 {
durationString = fmt.Sprintf("%d,%03d", durationMicros/1000, durationMicros%1000)
} else {
durationString = fmt.Sprintf("%d", durationMicros)
}
fmt.Printf("%s (%s) %s usec\n", dstIP, hwAddr, durationString)
os.Exit(0)
}
func Mac(ip string) (net.HardwareAddr, time.Duration, error) {
dstIP := net.ParseIP(ip)
return arping.Ping(dstIP)
}