var http = require(‘http‘)var proxy = http.createServer(function (request, response) {  var options = {    host: ‘www.cnblogs.com‘, // 这里是代理服务器           port: 80, // 这里是代理服务器端口    path: request.url,    method: request.method  }  var req = http.request(options, function (res) {    res.pipe(response);  }).end();}).listen(3000, ‘localhost‘)