er">bytes_transferred</span>   <span class="comment">// Number of bytes written.</span>
<span class="special">);</span>
</pre>
                </td>
</tr>
</tbody>
</table></div>
<p>
          Regardless of whether the asynchronous operation completes immediately
          or not, the handler will not be invoked from within this function. Invocation
          of the handler will be performed in a manner equivalent to using <code class="computeroutput"><span class="identifier">net</span><span class="special"