openbilibili/app/job/main/app-wall/model/const.go

package model

import "net"

const (
	TypeIOS     = "ios"
	TypeAndriod = "android"
)

// InetAtoN conver ip addr to uint32.
func InetAtoN(s string) (sum uint32) {
	ip := net.ParseIP(s)
	if ip == nil {
		return
	}
	ip = ip.To4()
	if ip == nil {
		return
	}
	sum += uint32(ip[0]) << 24
	sum += uint32(ip[1]) << 16
	sum += uint32(ip[2]) << 8
	sum += uint32(ip[3])
	return sum
}

// InetNtoA conver uint32 to ip addr.
func InetNtoA(sum uint32) string {
	ip := make(net.IP, net.IPv4len)
	ip[0] = byte((sum >> 24) & 0xFF)
	ip[1] = byte((sum >> 16) & 0xFF)
	ip[2] = byte((sum >> 8) & 0xFF)
	ip[3] = byte(sum & 0xFF)
	return ip.String()
}