title: Handle a POST request with Transfer-Encoding: chunked in Express
body: <p>I need to design an <code>express</code> route which handles a <code>POST</code> request with <code>Transfer-Encoding: chunked</code> and is able to read the data chunk-by-chunk.
  Can this be done? Googling it only shows how to steam data in the <em>response</em>, while I need to handle the <em>request</em>.</p>