pthread_mutex_lock(&relayd->ctrl_sock_mutex);
ret = relayd_send_index(&relayd->control_sock, element,
stream->relayd_stream_id, stream->next_net_seq_num - 1);
pthread_mutex_lock(&relayd->ctrl_sock_mutex);
ret = relayd_send_index(&relayd->control_sock, element,
stream->relayd_stream_id, stream->next_net_seq_num - 1);