title: req.files undefined in express.js
body: <p>My goal is to upload to s3 without rely on any middle-where like multer. THis is my view:</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;form role="form" action="/send" method="post"&gt;
    &lt;input type="file" name="photo" class="form-control"/&gt;
    &lt;button type="submit"&gt;Submit&lt;/button&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>My api using express.js:</p>
  
  <pre class="lang-js prettyprint-override"><code>router.post('/register_', function(req, res) {
    console.log(req.files) // undefined
  });
  </code></pre>
  
  <p>I do <code>req.body.photo</code> it shows a string, but how do I stream the file if <code>req.files</code> is undefined?</p>