Golang实现IP地址转整数的方法详解

package main

import (
	"fmt"
	"net"
	"encoding/binary"
)

func IPv4ToInt(IPv4Addr string) (uint32, error) {
	ip := net.ParseIP(IPv4Addr)
	if ip == nil {
		return 0, fmt.Errorf("invalid IP address: %s", IPv4Addr)
	}

	ipv4 := ip.To4()
	if ipv4 == nil {
		return 0, fmt.Errorf("not an IPv4 address: %s", IPv4Addr)
	}

	return binary.BigEndian.Uint32(ipv4), nil
}

func main() {
	ipStr := "192.168.0.110"
	ipInt, err := IPv4ToInt(ipStr)
	if err != nil {
		fmt.Println(err)
		return
	}

	fmt.Printf("The integer representation of %s is %d\n", ipStr, ipInt)
}

package main

import (
    "fmt"
    "net"
    "encoding/binary"
)

func IPv6ToInt(IPv6Addr string) (uint64, uint64, error) {
    ip := net.ParseIP(IPv6Addr)
    if ip == nil {
        return 0, 0, fmt.Errorf("invalid IP address: %s", IPv6Addr)
    }

    ipv6 := ip.To16()
    if ipv6 == nil {
        return 0, 0, fmt.Errorf("not an IPv6 address: %s", IPv6Addr)
    }

    high := binary.BigEndian.Uint64(ipv6[:8])
    low := binary.BigEndian.Uint64(ipv6[8:])

    return high, low, nil
}

func main() {
    ipv6Str := "2001:0db8:85a3:0000:0000:8a2e:0370:7334"
    high, low, err := IPv6ToInt(ipv6Str)
    if err != nil {
        fmt.Println(err)
        return
    }

    fmt.Printf("The integer representation of %s is high: %d, low: %d\n", ipv6Str, high, low)
}