Image which takes 6 seconds to load

.gitignore

/node_modules/

package.json

{
  "name": "slow-image",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "dependencies": {
    "express": "^4.10.7"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}

server.js

var express = require('express');
var fs = require('fs');

var app = express();

app.get('/', function(req, res, next) {
  res.set('Content-Type', 'image/jpeg');
  var readStream = fs.createReadStream(__dirname + '/stephen-williams.jpeg');

  readStream.on('open', function () {
    setTimeout(function() {
      readStream.pipe(res);
    }, 6000);
  });

  readStream.on('error', function(err) {
    res.end(err.message);
  });
});

app.listen(process.env.PORT || 5000);

stephen-williams.jpeg