protocols/oscar/txqueue.c


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generated by cgit v1.2.3 (git 2.25.1) at 2025-11-15 00:51:14 +0000
 

an class="p">(aim_session_t *sess, aim_frame_t *fr)
{
	aim_bstream_t obs;
	guint8 *obs_raw;
	int payloadlen, err = 0, obslen;

	payloadlen = aim_bstream_curpos(&fr->data);

	if (!(obs_raw = g_malloc(6 + payloadlen)))
		return -ENOMEM;

	aim_bstream_init(&obs, obs_raw, 6 + payloadlen);

	/* FLAP header */
	aimbs_put8(&obs, 0x2a);
	aimbs_put8(&obs, fr->hdr.flap.type);
	aimbs_put16(&obs, fr->hdr.flap.seqnum);
	aimbs_put16(&obs, payloadlen);

	/* payload */
	aim_bstream_rewind(&fr->data);
	aimbs_putbs(&obs, &fr->data, payloadlen);

	obslen = aim_bstream_curpos(&obs);
	aim_bstream_rewind(&obs);
	if (aim_bstream_send(&obs, fr->conn, obslen) != obslen)
		err = -errno;
	
	g_free(obs_raw); /* XXX aim_bstream_free */

	fr->handled = 1;
	fr->conn->lastactivity = time(NULL);

	return err;
}

int aim_tx_sendframe(aim_session_t *sess, aim_frame_t *fr)
{
	if (fr->hdrtype == AIM_FRAMETYPE_FLAP)
		return sendframe_flap(sess, fr);
	return -1;
}

int aim_tx_flushqueue(aim_session_t *sess)
{
	aim_frame_t *cur;

	for (cur = sess->queue_outgoing; cur; cur = cur->next) {

		if (cur->handled)
	       		continue; /* already been sent */

		if (cur->conn && (cur->conn->status & AIM_CONN_STATUS_INPROGRESS))
			continue;

		/*
		 * And now for the meager attempt to force transmit
		 * latency and avoid missed messages.
		 */
		if ((cur->conn->lastactivity + cur->conn->forcedlatency) >= time(NULL)) {
			/* 
			 * XXX should be a break! we dont want to block the 
			 * upper layers
			 *
			 * XXX or better, just do this right.
			 *
			 */
			sleep((cur->conn->lastactivity + cur->conn->forcedlatency) - time(NULL));
		}

		/* XXX this should call the custom "queuing" function!! */
		aim_tx_sendframe(sess, cur);
	}

	/* purge sent commands from queue */
	aim_tx_purgequeue(sess);

	return 0;
}

/*
 *  aim_tx_purgequeue()
 *  
 *  This is responsable for removing sent commands from the transmit 
 *  queue. This is not a required operation, but it of course helps
 *  reduce memory footprint at run time!  
 *
 */
void aim_tx_purgequeue(aim_session_t *sess)
{
	aim_frame_t *cur, **prev;

	for (prev = &sess->queue_outgoing; (cur = *prev); ) {

		if (cur->handled) {
			*prev = cur->next;

			aim_frame_destroy(cur);

		} else
			prev = &cur->next;
	}

	return;
}

/**
 * aim_tx_cleanqueue - get rid of packets waiting for tx on a dying conn
 * @sess: session
 * @conn: connection that's dying
 *
 * for now this simply marks all packets as sent and lets them
 * disappear without warning.
 *
 */
void aim_tx_cleanqueue(aim_session_t *sess, aim_conn_t *conn)
{
	aim_frame_t *cur;

	for (cur = sess->queue_outgoing; cur; cur = cur->next) {
		if (cur->conn == conn)
			cur->handled = 1;
	}

	return;
}