node代理服务器

var express = require('express');
var request = require('request');
var app = express();
var _URL = 'http://192.168.1.124:8082/';
app.use('/', function(req, res) {
var url = _URL + req.url;
req.pipe(request(url)).pipe(res);
});
app.listen(process.env.PORT || 9999);