有一个请求，在浏览器地址栏直接访问是没问题的，但是用node的request模块或者http模块访问，就提示ETIMEDOUT，有人遇到过这种情况吗？求指教。

var request = require('request');
var http = require('http');

request.get('http://xxx.xx.xxx.xx:3071/xxx/xxx', (error, response, body) => {
  if (error) {
    console.log(error);
  } else {
    console.log(body);
  }
})

http.get({
  hostname: 'xxx.xx.xxx.xx',
  port: '3071',
  path: '/xxx/xxx'
}, res => {
  console.log(res);
})

request的响应

{ Error: connect ETIMEDOUT xxx.xx.xxx.xx:xxxx
    at Object.exports._errnoException (util.js:1022:11)
    at exports._exceptionWithHostPort (util.js:1045:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1087:14)
  code: 'ETIMEDOUT',
  errno: 'ETIMEDOUT',
  syscall: 'connect',
  address: 'xxx.xx.xxx.xx',
  port: xxxx }