he function exits without blocking. The sending occurs asynchronously. A successful operation is defined as sending all of the blob; and the native handle. <code>on_sent_or_error()</code> shall be called at most once, indicating the outcome of the operation. (Informally: Most of the time, though asynchronous, this should be a very fast op. This deals with local (Unix domain as of this writing) peer connections; and the other side likely uses <a class="el" href="classipc_1_1transport_1_1Native__socket__strea