c_write()</code> on such a socket. If null behavior is undefined (assertion may trip). </td></tr>
    <tr><td class="paramname">payload_hndl</td><td>The native handle to transmit. If <code>payload_hndl.is_null()</code> behavior is undefined (possible assertion trip). </td></tr>
    <tr><td class="paramname">payload_blob</td><td>The buffer to transmit. Reiterating the above outcome semantics: Either there is no error, and then the <code>N</code> passed to the handler callback will equal <code>payload_blob.si