使用Golang计算网络IP地址的CIDR

CIDR详解

参考link: https://blog.csdn.net/han156/article/details/77817031

通过ip/mask获取起止ip

func getIpSegRange(userSegIp, offset uint8) (int, int) {
	var ipSegMax uint8 = 255
	netSegIp := ipSegMax << offset
	segMinIp := netSegIp & userSegIp
	segMaxIp := userSegIp&(255< 8 {
		segIp, _ := strconv.Atoi(ipSegs[0])
		return segIp, segIp
	}
	ipSeg, _ := strconv.Atoi(ipSegs[0])
	return getIpSegRange(uint8(ipSeg), uint8(8-maskLen))
}

func getIpSeg2Range(ipSegs []string, maskLen int) (int, int) {
	if maskLen > 16 {
		segIp, _ := strconv.Atoi(ipSegs[1])
		return segIp, segIp
	}
	ipSeg, _ := str