Yasso更新大改动，更新扫描方式，去除不常用功能，增加指纹和协议识别，修补bug等

pkg/netspy/icmp/icmp.go

@@ -0,0 +1,28 @@
+package icmp
+
+import (
+	"github.com/go-ping/ping"
+	"runtime"
+	"time"
+)
+
+func Check(ip string) bool {
+	pinger, err := ping.NewPinger(ip)
+	if err != nil {
+		return false
+	}
+	if runtime.GOOS == "windows" {
+		pinger.SetPrivileged(true)
+	}
+	pinger.Count = 1
+	pinger.Timeout = 100 * time.Millisecond
+	err = pinger.Run()
+	if err != nil {
+		return false
+	}
+	stats := pinger.Statistics()
+	if stats.PacketsRecv > 0 {
+		return true
+	}
+	return false
+}