Upload image file from Node.js

imageUpload.js

/**
* Example of simulating file upload post form from node.js
*
* Set your own file and server options.
*/

var img = require('fs').readFileSync('./sample.png');

var options = { host: '...'
    , port: ...
    , path: ...
    , method: 'POST'
    };

var boundary = '--boundary1234567890--'
  , crlf = '\r\n'
  , part1 = crlf + 'Content-Type: image/png'
          + crlf + 'Content-Disposition: form-data; name="file"; filename="sample.png"'
          + crlf + crlf
  , part2 = img
  , part3 = crlf + '--' + boundary + '--';

var req = require('http').request(options, function(res) {
  res.on('end', function() {
    console.log('Uploaded.');
  });
});

req.on('error', function(e) {
  console.log('Error when upload: ' + e.message);
});

req.setHeader('Content-Type', 'multipart/form-data; boundary=' + boundary);

req.write(part1, 'utf-8');
req.write(part2, 'binary');
req.write(part3, 'utf-8');
req.end();