POST /handler.cgi HTTP/1.1
Host: http://www.example.com/
Content-Type: multipart/form-data; boundary=XYZ

--XYZ
Content-Disposition: form-data; name="title"

Picture of Camel
--XYZ
Content-Disposition: form-data; name="upload"
Content-Type: image/jpeg

... some binary data ...
--XYZ--

##</code><code>##

<form action="http://www.example.com/handler.cgi"
      method="post"
      enctype="multipart/form-data">
  <fieldset>
    <legend>Image upload</legend>
    <label>Image <input name="title"></label><br>
    <label>File <input name="upload" type="file"></label>
    <input type="submit">
  </fieldset>
</form>