如何从NODEJS GAE应用程序调用外部web服务

const http = require('http');

const options = {
  hostname: 'api.example.com',
  path: '/endpoint',
  method: 'GET',
};

const req = http.request(options, (res) => {
  let data = '';

  res.on('data', (chunk) => {
    data += chunk;
  });

  res.on('end', () => {
    console.log(data);
  });
});

req.on('error', (error) => {
  console.error(error);
});

req.end();

const axios = require('axios');

axios.get('https://api.example.com/endpoint')
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.error(error);
  });

const io = require('socket.io-client');

const socket = io('https://api.example.com');

socket.on('connect', () => {
  console.log('Connected to server');
});

socket.on('message', (data) => {
  console.log('Received message:', data);
});

socket.emit('message', 'Hello server');