http.js

var mkdirp = require('mkdirp');
var http = require('http');
var fs = require('fs');
var path = require('path');
var tmp = path.join(__dirname, 't.tgz');

var opts = {
  hostname: 'cnpm.oss.aliyuncs.com',
  method: 'GET',
  port: 80,
  path: '/cutter/-/cutter-0.0.3.tgz'
}

http.request(opts, function (res) {
  res.resume();
  res.pause();
  mkdirp(path.dirname(tmp), function () {
    var tarball = fs.createWriteStream(tmp, { mode: 420 })
    tarball.on('finish', function () {
      console.log('tarball finish');
    })
    res.on('data', function (data) {
      console.log('res on data: %s', data.length);
    })
    res.on('end', function (d) {
      console.log('res end');
    })
    res.resume();
    res.pipe(tarball);
  });
}).end();

http_sync.js

var mkdirp = require('mkdirp');
var http = require('http');
var fs = require('fs');
var path = require('path');
var tmp = path.join(__dirname, 't.tgz');

var opts = {
  hostname: 'cnpm.oss.aliyuncs.com',
  method: 'GET',
  port: 80,
  path: '/cutter/-/cutter-0.0.3.tgz'
}

http.request(opts, function (res) {
  res.resume();
  res.pause();
  mkdirp.sync(path.dirname(tmp));
  var tarball = fs.createWriteStream(tmp, { mode: 420 })
  tarball.on('finish', function () {
    console.log('tarball finish');
  })
  res.on('data', function (data) {
    console.log('res on data: %s', data.length);
  })
  res.on('end', function (d) {
    console.log('res end');
  })
  res.resume();
  res.pipe(tarball);
}).end();

request-shit.js

var mkdirp = require('mkdirp');
var request = require('request');
var fs = require('fs');
var path = require('path');
var tmp = path.join(__dirname, 't.tgz');

var opts =
{ url:
   { protocol: 'http:',
     slashes: true,
     auth: null,
     host: 'registry.npm.taobao.org',
     port: null,
     hostname: 'registry.npm.taobao.org',
     hash: null,
     search: null,
     query: null,
     pathname: '/cutter/download/cutter-0.0.3.tgz',
     path: '/cutter/download/cutter-0.0.3.tgz',
     href: 'http://registry.npm.taobao.org/cutter/download/cutter-0.0.3.tgz' },
  method: 'GET',
  headers:
   { version: '2.0.0-alpha.6.0',
     accept: 'application/x-tar',
     referer: 'install cutter',
     'npm-session': '79b8279ef0bb4df9',
     'user-agent': 'npm/2.0.0-alpha.6.0 node/v0.10.29 darwin x64' },
  strictSSL: true,
  followRedirect: true }

  var req = request(opts);

req.on('response', function (res) {
  res.resume();
  res.pause();

  mkdirp(path.dirname(tmp), function () {
    var tarball = fs.createWriteStream(tmp, { mode: 420 })
    tarball.on('finish', function () {
      console.log('tarball finish');
    })
    res.on('data', function (data) {
      console.log('res on data: %s', data.length);
    })
    res.on('end', function (d) {
      console.log('res end')
    })
    res.resume();
    res.pipe(tarball);
  });
})