node.js 获取ip

const os = require('os');

const networkInterfaces = os.networkInterfaces();
for (const key in networkInterfaces) {
  const interfaces = networkInterfaces[key];
  for (const iface of interfaces) {
    if (iface.family === 'IPv4' && !iface.internal) {
      console.log(`本地 IP 地址: ${iface.address}`);
    }
  }
}

const net = require('net');

const server = net.createServer();
server.once('listening', () => {
  const address = server.address();
  console.log(`本地 IP 地址: ${address.address}`);
  server.close();
});
server.listen(0);

const express = require('express');
const app = express();

app.get('/', (req, res) => {
  const clientIp = req.ip;
  console.log(`客户端 IP 地址: ${clientIp}`);
  res.send('IP 获取成功');
});

app.listen(3000);