*/
struct CadetTunnelQueueEntry *qe;
+ /**
+ * Data message we are trying to send.
+ */
+ struct GNUNET_CADET_ChannelAppDataMessage *data_message;
+
/**
* How soon should we retry if we fail to get an ACK?
* Messages in the queue are sorted by this value.
struct GNUNET_TIME_Relative retry_delay;
/**
- * Data message we are trying to send.
+ * Time when we first successfully transmitted the message
+ * (that is, set @e num_transmissions to 1).
*/
- struct GNUNET_CADET_ChannelAppDataMessage *data_message;
+ struct GNUNET_TIME_Absolute first_transmission_time;
+
+ /**
+ * Identifier of the connection that this message took when it
+ * was first transmitted. Only useful if @e num_transmissions is 1.
+ */
+ struct GNUNET_CADET_ConnectionTunnelIdentifier connection_taken;
+
+ /**
+ * How often was this message transmitted? #GNUNET_SYSERR if there
+ * was an error transmitting the message, #GNUNET_NO if it was not
+ * yet transmitted ever, otherwise the number of (re) transmissions.
+ */
+ int num_transmissions;
};
* create message. Delays for a bit until we retry.
*
* @param cls our `struct CadetChannel`.
+ * @param cid identifier of the connection within the tunnel, NULL
+ * if transmission failed
*/
static void
-channel_open_sent_cb (void *cls)
+channel_open_sent_cb (void *cls,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cid)
{
struct CadetChannel *ch = cls;
* ACKs for ACKs ;-).
*
* @param cls our `struct CadetChannel`.
+ * @param cid identifier of the connection within the tunnel, NULL
+ * if transmission failed
*/
static void
-send_ack_cb (void *cls)
+send_ack_cb (void *cls,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cid)
{
struct CadetChannel *ch = cls;
* #GNUNET_MESSAGE_TYPE_CADET_CHANNEL_OPEN_ACK.
*
* @param ch channel that got the duplicate open
+ * @param cti identifier of the connection that delivered the message
*/
void
-GCCH_handle_duplicate_open (struct CadetChannel *ch)
+GCCH_handle_duplicate_open (struct CadetChannel *ch,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cti)
{
if (NULL == ch->dest)
{
if (GNUNET_YES == ch->is_loopback)
{
ch->state = CADET_CHANNEL_OPEN_SENT;
- GCCH_handle_channel_open_ack (ch);
+ GCCH_handle_channel_open_ack (ch,
+ NULL);
}
else
{
* (the port is open on the other side). Begin transmissions.
*
* @param ch channel to destroy
+ * @param cti identifier of the connection that delivered the message
*/
void
-GCCH_handle_channel_open_ack (struct CadetChannel *ch)
+GCCH_handle_channel_open_ack (struct CadetChannel *ch,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cti)
{
switch (ch->state)
{
* Test if element @a e1 comes before element @a e2.
*
* @param cls closure, to a flag where we indicate duplicate packets
- * @param e1 an element of to sort
- * @param e2 another element to sort
+ * @param m1 a message of to sort
+ * @param m2 another message to sort
* @return #GNUNET_YES if @e1 < @e2, otherwise #GNUNET_NO
*/
static int
}
else
{
- /* result is small, thus v2 > v1, thus e1 < e2 */
+ /* result is small, thus v2 > v1, thus m1 < m2 */
return GNUNET_YES;
}
}
* and send an ACK to the other end (once flow control allows it!)
*
* @param ch channel that got data
+ * @param cti identifier of the connection that delivered the message
* @param msg message that was received
*/
void
GCCH_handle_channel_plaintext_data (struct CadetChannel *ch,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cti,
const struct GNUNET_CADET_ChannelAppDataMessage *msg)
{
struct GNUNET_MQ_Envelope *env;
/* Yep, need to drop. Drop the oldest message in
the buffer. */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Queue full due slow client on %s, dropping oldest message\n",
+ GCCH_2s (ch));
+ GNUNET_STATISTICS_update (stats,
+ "# messages dropped due to slow client",
+ 1,
+ GNUNET_NO);
drop = ccc->head_recv;
GNUNET_CONTAINER_DLL_remove (ccc->head_recv,
ccc->tail_recv,
* wait for ACK (or retransmit).
*
* @param cls the `struct CadetReliableMessage` that was sent
+ * @param cid identifier of the connection within the tunnel, NULL
+ * if transmission failed
*/
static void
-data_sent_cb (void *cls);
+data_sent_cb (void *cls,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cid);
/**
* the queue and tell our client that it can send more.
*
* @param ch the channel that got the PLAINTEXT_DATA_ACK
+ * @param cti identifier of the connection that delivered the message
* @param crm the message that got acknowledged
*/
static void
handle_matching_ack (struct CadetChannel *ch,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cti,
struct CadetReliableMessage *crm)
{
GNUNET_CONTAINER_DLL_remove (ch->head_sent,
GCT_send_cancel (crm->qe);
crm->qe = NULL;
}
+ if ( (1 == crm->num_transmissions) &&
+ (NULL != cti) )
+ {
+ GCC_ack_observed (cti);
+ if (0 == memcmp (cti,
+ &crm->connection_taken,
+ sizeof (struct GNUNET_CADET_ConnectionTunnelIdentifier)))
+ {
+ GCC_latency_observed (cti,
+ GNUNET_TIME_absolute_get_duration (crm->first_transmission_time));
+ }
+ }
GNUNET_free (crm->data_message);
GNUNET_free (crm);
send_ack_to_client (ch,
* Possibly resume transmissions.
*
* @param ch channel that got the ack
+ * @param cti identifier of the connection that delivered the message
* @param ack details about what was received
*/
void
GCCH_handle_channel_plaintext_data_ack (struct CadetChannel *ch,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cti,
const struct GNUNET_CADET_ChannelDataAckMessage *ack)
{
struct CadetReliableMessage *crm;
ntohl (crm->data_message->mid.mid),
GCCH_2s (ch));
handle_matching_ack (ch,
+ cti,
crm);
found = GNUNET_YES;
continue;
ntohl (crm->data_message->mid.mid),
GCCH_2s (ch));
handle_matching_ack (ch,
+ cti,
crm);
found = GNUNET_YES;
}
* the tunnel.
*
* @param ch channel to destroy
+ * @param cti identifier of the connection that delivered the message,
+ * NULL if we are simulating receiving a destroy due to shutdown
*/
void
-GCCH_handle_remote_destroy (struct CadetChannel *ch)
+GCCH_handle_remote_destroy (struct CadetChannel *ch,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cti)
{
struct CadetChannelClient *ccc;
* wait for ACK (or retransmit).
*
* @param cls the `struct CadetReliableMessage` that was sent
+ * @param cid identifier of the connection within the tunnel, NULL
+ * if transmission failed
*/
static void
-data_sent_cb (void *cls)
+data_sent_cb (void *cls,
+ const struct GNUNET_CADET_ConnectionTunnelIdentifier *cid)
{
struct CadetReliableMessage *crm = cls;
struct CadetChannel *ch = crm->ch;
: GNUNET_YES);
return;
}
+ if (NULL == cid)
+ {
+ /* There was an error sending. */
+ crm->num_transmissions = GNUNET_SYSERR;
+ }
+ else if (GNUNET_SYSERR != crm->num_transmissions)
+ {
+ /* Increment transmission counter, and possibly store @a cid
+ if this was the first transmission. */
+ crm->num_transmissions++;
+ if (1 == crm->num_transmissions)
+ {
+ crm->first_transmission_time = GNUNET_TIME_absolute_get ();
+ crm->connection_taken = *cid;
+ GCC_ack_expected (cid);
+ }
+ }
if (0 == crm->retry_delay.rel_value_us)
crm->retry_delay = ch->expected_delay;
else
}
if ( (com->mid.mid != ch->mid_recv.mid) &&
- (GNUNET_NO == ch->out_of_order) )
+ (GNUNET_NO == ch->out_of_order) &&
+ (GNUNET_YES == ch->reliable) )
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Got LOCAL_ACK, %s-%X ready to receive more data (but next one is out-of-order %u vs. %u)!\n",
projects / oweals / gnunet.git / blobdiff