LadonGO ICMP批量探测存活主机

Golang ICMP协议探测存活主机
优点: 速度快，扫描C段仅1秒
缺点: 仅支持管理员或以上权限
Ladon 192.169.1.8/24 IcmpScan

package icmp
//Ladon Scanner for golang 
//Author: k8gege
//K8Blog: http://k8gege.org
//Github: https://github.com/k8gege/LadonGo
import (
	"time"
	"net"
	"os"
	"fmt"
	"log"
)

func Icmp(host string,Log *log.Logger) {
   
	var size int
	var timeout int64
	var seq int16 = 1
	const ECHO_REQUEST_HEAD_LEN = 8

	size = 32
	timeout = 1000

	starttime := time.Now()
	conn, err := net.DialTimeout("ip4:icmp", host, time.Duration(timeout*1000*1000))
	if err != nil {
   
		return
	}
	defer conn.Close()
	id0, id1 := genidentifier(host)

	var msg []byte = make([]byte