IP 地址查询

复制import socket
import struct
import requests

# 从 ipip.net 免费 API 获取 IP 归属地（不依赖外网需本地部署数据库）
ip = "8.8.8.8"
url = f"https://freeapi.ipip.net/{ip}"

try:
    resp = requests.get(url, timeout=5)
    data = resp.json()
    # 返回格式: [国家, 省份, 城市, 运营商]
    print(f"国家: {data[0]}, 省份: {data[1]}, 城市: {data[2]}, 运营商: {data[3]}")
except Exception as e:
    print(f"查询失败: {e}")

# 纯本地实现（使用内置 socket 获取本机 IP）
hostname = socket.gethostname()
local_ip = socket.gethostbyname(hostname)
print(f"本机 IP: {local_ip}")

复制package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
	"time"
)

func main() {
	ip := "114.114.114.114"
	// 使用 ip-api.com 免费接口（不依赖外网需本地部署）
	url := fmt.Sprintf("http://ip-api.com/json/%s?lang=zh-CN", ip)

	client := http.Client{Timeout: 5 * time.Second}
	resp, err := client.Get(url)
	if err != nil {
		fmt.Println("请求失败:", err)
		return
	}
	defer resp.Body.Close()

	body, _ := ioutil.ReadAll(resp.Body)
	var result map[string]interface{}
	json.Unmarshal(body, &result)

	fmt.Printf("国家: %v\n", result["country"])
	fmt.Printf("省份: %v\n", result["regionName"])
	fmt.Printf("城市: %v\n", result["city"])
	fmt.Printf("运营商: %v\n", result["isp"])
}

复制// 浏览器端通过 WebRTC 获取本机 IP（仅内网）
// 真实公网 IP 需通过服务端接口
async function getLocalIP() {
    return new Promise((resolve, reject) => {
        const pc = new RTCPeerConnection({ iceServers: [] });
        pc.createDataChannel('');
        pc.createOffer().then(offer => pc.setLocalDescription(offer));
        
        pc.onicecandidate = (e) => {
            if (!e.candidate) return;
            const ipRegex = /([0-9]{1,3}(\.[0-9]{1,3}){3})/;
            const match = e.candidate.candidate.match(ipRegex);
            if (match) {
                resolve(match[1]);
                pc.close();
            }
        };
        setTimeout(() => reject('超时'), 3000);
    });
}

// 使用示例
getLocalIP().then(ip => console.log('本机内网IP:', ip));

// 调用公共 API 查询任意 IP
fetch('https://ipapi.co/8.8.8.8/json/')
    .then(r => r.json())
    .then(data => {
        console.log('国家:', data.country_name);
        console.log('城市:', data.city);
        console.log('运营商:', data.org);
    });