如何通过Node.js网络模块获取客户内网IP？

const os = require('os');
const net = require('net');

function getLocalIP() {
  const interfaces = os.networkInterfaces();
  for (const interfaceName in interfaces) {
    const interface = interfaces[interfaceName];
    for (const iface of interface) {
      if (iface.family === 'IPv4' && !iface.internal) {
        return iface.address;
      }
    }
  }
}

const server = net.createServer((socket) => {
  const clientIP = socket.remoteAddress;
  const localIP = getLocalIP();
  console.log(`Client IP: ${clientIP}`);
  console.log(`Local IP: ${localIP}`);
});

server.listen(3000, '0.0.0.0', () => {
  console.log('Server listening on port 3000');
});