13 Nov
2014
13 Nov
'14
1:03 p.m.
Thanks Alex for your confirmation. In some way I was afraid about this ;).
Have a good one!
DanB
13 Nov
13 Nov
1:17 p.m.
New subject: how to check if reply is retransmission?
Alex Hermann writes:
> is there a means to check if reply to t_relay()ed
request is
> retransmission? there is t_is_retr_async_reply(), but that does not
> apply to regular transactions.
I don't think there is a built-in for that. I
ended up storing the Via branch
parameter of the reply in a htable.
how do you access branch value of the first via? do you use transformations
since looks like there is no pv for that?
-- juha
1:29 p.m.
New subject: how to check if reply is retransmission?
On Thursday 13 November 2014, Juha Heinanen wrote:
Alex Hermann writes:
how do you access branch value of the first via? do you use transformations
since looks like there is no pv for that?
I use a select:
$sel(via[0].branch)
--
Greetings,
Alex Hermann
is there
a means to check if reply to t_relay()ed request is
retransmission? there is t_is_retr_async_reply(), but that does not
apply to regular transactions.
I don't think there is a built-in for that. I ended up storing the Via
branch parameter of the reply in a htable.
1:35 p.m.
New subject: how to check if reply is retransmission?
Alex Hermann writes:
I use a select:
$sel(via[0].branch)
oh yes, i just figured that out too and was about to reply to my own
question.
there is new piece of information in your reply though. based on the
example on select wiki page, i was going to use index 1:
Example:
return the IP of top most Via header
@via[1].host
based on your answer, looks like there is a mistake in the example.
-- juha
1:39 p.m.
New subject: how to check if reply is retransmission?
Juha Heinanen writes:
there is new piece of information in your reply
though. based on the
example on select wiki page, i was going to use index 1:
Example:
return the IP of top most Via header
@via[1].host
based on your answer, looks like there is a mistake in the example.
no, the example is correct. index needs to be 1.
-- juha
1:39 p.m.
New subject: how to check if reply is retransmission?
On Thursday 13 November 2014, Juha Heinanen wrote:
there is new piece of information in your reply
though. based on the
example on select wiki page, i was going to use index 1:
based on your answer, looks like there is a mistake in
the example.
Probably not, i edited the parameter from 1 to 0 for this example, because
from my memory, i needed the 2nd via in my code. Probably my memory had
failed.
--
Greetings,
Alex Hermann
2:14 p.m.
New subject: how to check if reply is retransmission?
i tried to drop 200 ok in default onreply_route if it is retransmission.
it didn't work out, however, since looks like branch flags (that i need
to make dropping decision) are not available in default reply route. is
this intentional?
-- juha
2:29 p.m.
New subject: how to check if reply is retransmission?
On 13/11/14 13:14, Juha Heinanen wrote:
i tried to drop 200 ok in default onreply_route if it
is retransmission.
it didn't work out, however, since looks like branch flags (that i need
to make dropping decision) are not available in default reply route. is
this intentional?
Branch flags are stored in transaction. The default reply route
is
executed by core before the transaction module gets the reply.
Cheers,
Daniel
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Nov 24-27, Berlin - http://www.asipto.com
2:32 p.m.
New subject: how to check if reply is retransmission?
On Thursday 13 November 2014, Juha Heinanen wrote:
i tried to drop 200 ok in default onreply_route if it
is retransmission.
it didn't work out, however, since looks like branch flags (that i need
to make dropping decision) are not available in default reply route. is
this intentional?
You can try calling t_check_trans() beforehand.
--
Greetings,
Alex Hermann
3:21 p.m.
New subject: how to check if reply is retransmission?
Alex,
I read about INVITE server transactions in rfc3261 and looks like the
transaction can stay in Completed state (i.e, absorbing 200 OKs) at
least 32 seconds. It means that the via branch hash table must in a
busy proxy be quite large. Since the same info must be available
somewhere in the depths of tm module, would it be better if someone
with tm knowledge would write a function to access it?
-- Juha
3:35 p.m.
New subject: how to check if reply is retransmission?
On Thursday 13 November 2014, Juha Heinanen wrote:
I read about INVITE server transactions in rfc3261 and
looks like the
transaction can stay in Completed state (i.e, absorbing 200 OKs) at
least 32 seconds. It means that the via branch hash table must in a
busy proxy be quite large.
I don't think it adds much overhead.
Another possibility is to keep state in the transaction, via a flag or avp.
I also use $T_reply_last (tmx module) to check if the current response has a
different (or same) code as the last response. Maybe you can use that?
Since the same info must be available
somewhere in the depths of tm module, would it be better if someone
with tm knowledge would write a function to access it?
I don't think tm recognises a retransmitted reply. It remembers the last reply
and it does notice that a reply has already been sent (locally or forwarded).
--
Greetings,
Alex Hermann
1:25 p.m.
New subject: UDP-TCP bridging in-dialog SUBSCRIBE
Hi Dan,
You can check the transport value in the RURI and relay the SIP message as
tcp.
if ($*rP* == "tcp"){
t_relay_to_tcp()
}
Regards
Varghese Paul
On Thu, Nov 13, 2014 at 4:33 PM, Dan Christian Bogos <danb.lists(a)gmail.com>
wrote:
Thanks Alex for your confirmation. In some way I was
afraid about this ;).
Have a good one!
DanB
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11 comments
5 participants
participants (5)
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Alex Hermann -
Dan Christian Bogos -
Daniel-Constantin Mierla -
Juha Heinanen -
Varghese Paul