="A_HTTP_HEAD_request.">A HTTP HEAD request.</a></h4>.</td></tr>
<tr><td valign="top"><a href="#head-5">head/5</a></td><td>
  <h4><a name="A_HTTP_HEAD_request_with_a_timeout.">A HTTP HEAD request with a timeout.</a></h4>.</td></tr>
<tr><td valign="top"><a href="#head_async-4">head_async/4</a></td><td>
  <h4><a name="A_HTTP_HEAD_async_request.">A HTTP HEAD async request.</a></h4>.</td></tr>
<tr><td valign="top"><a href="#head_async-5">head_async/5</a></td><td>
  <h4><a name="A_HTTP_HEAD_async_request_with_a_