<span class="comment">// May be set by the callback to indicate an error</span>
</pre>
              </td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break"><p>
        This example will read a message header from the stream, and then manually
        read each chunk. It recognizes the chunk boundaries and outputs the contents
        of each chunk as it comes in. Any chunk extensions are printed, each extension
        on its own line. Finally, any trailers promised in the header are printed.
  