gistfile1.js

var URL = require('url'),
    HTTP = require('http'),
    Canvas = require('canvas'),
    Image = Canvas.Image,
    img = new Image(),

    canvas = new Canvas(200,200),
    ctx = canvas.getContext('2d'),

    // throws "Error: Image given has not completed loading"
    url1 = 'http://printio.ru/canvas_images/c9e1973ac9e730a431ad631cddac02bb81e3bd9d.png',
    // works
    url2 = 'http://content0.printio.ru/assets/designs/large/72f8b6e1c251dd9cd80b927e7c0bfacb072e8bf2.png';

var oURL = URL.parse(url1),
    client = HTTP.createClient(oURL.port, oURL.hostname),
    req = client.request('GET', oURL.pathname, { 'host': oURL.hostname });

req.on('response', function (response) {
  var body = "";
  response.setEncoding('binary');
  response.on('end', function () {
    img.src = new Buffer(body, 'binary');
    ctx.drawImage(img, 0, 0, img.width, img.height);
  });
  response.on('data', function (chunk) {
    if (response.statusCode === 200) {
      body += chunk;
    }
  });
});

req.end();