add upload script

upload.js

var http = require('http'),
    fs = require('fs'),
    parse = require('url').parse;

function upload(url, filePath, callback) {
  var urlObj = parse(url),
      path = urlObj.pathname + (urlObj.search || ''),
      options = {
        hostname: urlObj.hostname,
        path: path,
        port: urlObj.port || 80,
        method: 'GET'
      };

  var req = http.request(options, function(res) {
    res.setEncoding('utf-8');
    var chunks = [],
        length = 0;

    res.on('data', function(chunk) {
      chunks.push(chunk);
      length += chunk.length;
    }).on('end', function() {
      var buffer = new Buffer(length);
      for(var i, pos = 0, l = chunks.length; i < l; i++) {
        chunks[i].copy(buffer, pos);
        pos += chunks[i].length;
      }
      res.body = buffer;
      callback(null, res);
    });
  });

  var rs = fs.createReadStream(filePath);
  rs.on('data', function(data) {
    req.write(data);
  }).on('end', function() {
    req.end();
  });
}

function upload_with_pipe(url, filePath, callback) {
  var urlObj = parse(url),
      path = urlObj.pathname + (urlObj.search || ''),
      options = {
        hostname: urlObj.hostname,
        path: path,
        port: urlObj.port || 80,
        method: 'GET'
      };

  var req = http.request(options, function(res) {
    res.setEncoding('utf-8');
    var chunks = [],
        length = 0;

    res.on('data', function(chunk) {
      chunks.push(chunk);
      length += chunk.length;
    }).on('end', function() {
      var buffer = new Buffer(length);
      for(var i, pos = 0, l = chunks.length; i < l; i++) {
        chunks[i].copy(buffer, pos);
        pos += chunks[i].length;
      }
      res.body = buffer;
      callback(null, res);
    });
  });

  // pipe
  fs.createReadStream(filePath).pipe(req);
}