 </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if non-null <code>err_code</code> and truthy resulting <code>*err_code</code>, and hence no bytes or the handle was sent; 1+ if that number of bytes were sent plus the native handle (and hence falsy <code>*err_code</code> if non-null). </dd></dl>

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