CET_READ_REQUEST
result = send_credentials(connection, CET_READ_REQUEST);
case CET_READ_REQUEST:
assert(element->type == CET_READ_REQUEST);
case CET_READ_REQUEST:
if ((elem_type != CET_READ_REQUEST) &&
case CET_READ_REQUEST:
case CET_READ_REQUEST:
init_comm_element(&qstate->request, CET_READ_REQUEST);