package main

import (
	"fmt"
	"unsafe"

	"golang.org/x/sys/windows"
)

func main() {

	var wsaData windows.WSAData
	err := windows.WSAStartup(2<<16+2, &wsaData)
	if err != nil {
		fmt.Println(err)
		return
	}

	sh, err := windows.Socket(windows.AF_INET, windows.SOCK_RAW, windows.IPPROTO_ICMP)
	if err != nil {
		fmt.Println(err)
		return
	}

	var rAddr windows.RawSockaddrInet4
	rAddr.Family = windows.AF_INET
	rAddr.Port = 27015
	rAddr.Addr = [4]byte{192, 168, 1, 1}
	q := (*windows.RawSockaddrAny)(unsafe.Pointer(&rAddr))
	sAddr, err := q.Sockaddr()
	if err != nil {
		fmt.Println(err)
		return
	}

	var aOptVal bool = true
	err = windows.Setsockopt(sh, windows.IPPROTO_IP, 14, (*byte)(unsafe.Pointer(&aOptVal)), int32(unsafe.Sizeof(aOptVal)))
	if err != nil {
		fmt.Println(err)
		return
	}

	// 发送
	var d []byte = make([]byte, 0)
	d = append(d, 8, 0, 247, 95, 0, 1, 0, 159)
	err = windows.Sendto(sh, d, 0, sAddr)
	if err != nil {
		fmt.Println(err)
		return
	}

	// 关闭
	err = windows.Closesocket(sh)
	if err != nil {
		fmt.Println(err)
		return
	}
	err = windows.WSACleanup()
	if err != nil {
		fmt.Println(err)
		return
	}
}