t function, however, though merely because they were not necessary as of this writing and hence excluded for simplicity; these are formally described below.</p>
<h3>Formal behavior</h3>
<p >This function requires that <code>payload_blob</code> be non-empty; and <code>payload_hndl.null() == false</code>. (If you want to send a non-empty buffer but no handle, then just use boost.asio <code>async_write()</code>. As of this writing the relevant OS shall not support sending a handle but a null buffer.)</p>
<p >T