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這篇文章將為大家詳細(xì)講解有關(guān)golang中怎么測(cè)試是否能ping通,文章內(nèi)容質(zhì)量較高,因此小編分享給大家做個(gè)參考,希望大家閱讀完這篇文章后對(duì)相關(guān)知識(shí)有一定的了解。
在項(xiàng)目中,我們需要知道哪些IP是可用IP,這時(shí)候想到了用ICMP(Internet控制報(bào)文協(xié)議)??梢允褂瞄_源庫(kù)–github.com/sparrc/go-ping來判斷是否能ping通。
使用–github.com/sparrc/go-ping開源庫(kù)判斷是否能ping通的代碼:
func ServerPing(target string) bool { pinger, err := ping.NewPinger(target) if err != nil { panic(err) } pinger.Count = ICMPCOUNT pinger.Timeout = time.Duration(PINGTIME*time.Millisecond) pinger.SetPrivileged(true) pinger.Run()// blocks until finished stats := pinger.Statistics() fmt.Println(stats) // 有回包,就是說明IP是可用的 if stats.PacketsRecv >= 1 { return true } return false }
這里是通過回包數(shù)量來判斷的,也可以通過掉包率來判斷。同時(shí),該庫(kù)提供了Statistics結(jié)構(gòu)體,包含了詳細(xì)的ICMP信息,如下
type Statistics struct { // PacketsRecv is the number of packets received. PacketsRecv int // PacketsSent is the number of packets sent. PacketsSent int // PacketLoss is the percentage of packets lost. PacketLoss float64 // IPAddr is the address of the host being pinged. IPAddr *net.IPAddr // Addr is the string address of the host being pinged. Addr string // Rtts is all of the round-trip times sent via this pinger. Rtts []time.Duration // MinRtt is the minimum round-trip time sent via this pinger. MinRtt time.Duration // MaxRtt is the maximum round-trip time sent via this pinger. MaxRtt time.Duration // AvgRtt is the average round-trip time sent via this pinger. AvgRtt time.Duration // StdDevRtt is the standard deviation of the round-trip times sent via // this pinger. StdDevRtt time.Duration }
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