f the blob are. See <code>flow::Error_code</code> docs for error reporting semantics (if <code>err_code</code> is non-null, <code>*err_code</code> is set to code or success; else exception with that code is thrown in the former [non-success] case). (Informally: Most of the time, assuming no error condition on the connection, the function will return success. 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_1Na