[SR-Users] INVITE Retransmission Causes Limiting Simultaneus Calls for Subscribers

[Bayram Karagoz]

Hi,

is there any advise about my problem?
I'm using kamailio in my production environment and this issue started to
reproduce a lot.
is there any way to discard retransmitted INVITE messages from counting
dialog?


2013/2/9 Bayram Karagoz <karagoz.bayram at gmail.com>

> thanks for the response Daniel,
>
> has_totag not solved my problem.
>
> in a deep search I realized that these retransmission INVITE dialogs are
> waiting in dialog list as state = 1. one example is below;
> is there any way to clear these dialog which state is waiting for state =
> 1 or any other solution is welcome for me?
>
> dialog::  hash=246:499719317
>         state:: 1
>         ref_count:: 1
>         timestart:: 0
>         timeout:: 0
>         callid:: 1356619-3569384775-474862 at GBSBC-1.mydomain.com
>         from_uri:: sip:02165151057 at xxx.xxx.xxx.xxx
>         from_tag:: 3569384775-474868
>         caller_contact:: sip:02165151057 at xxx.xxx.xxx.xxx:5060
>         caller_cseq:: 2
>         caller_route_set::
>         caller_bind_addr:: udp:xxx.xxx.xxx.xxx:5060
>         callee_bind_addr::
>         to_uri:: sip:4115667 at xxx.xxx.xxx.xxx
>         to_tag::
>         callee_contact::
>         callee_cseq::
>         callee_route_set::
>
>
>
>
> 2013/2/4 Daniel Tryba <daniel at pocos.nl>
>
>> On Sunday 03 February 2013 12:58:02 Bayram Karagoz wrote:
>> > I'm trying to limit all subscriber's active call according to setting
>> their
>> > simultaneous use setting defined in database.
>> > But having problem when one subscriber's INVITE message goes to
>> > retransmission. When retranmission occures INVITE messages don't
>> complete
>> > with BYE and subscriber simultaneus use amount will hung.
>> > My example code block is below.
>> > Does anyone advice me for overcome INVITE retransmissions?
>>
>> I haven't implemented it myself yet, but all examples I've seen check for
>> !has_totag() in the INVITE when doing call limit accounting. So
>> if (is_method("INVITE") && $fU == $avp(s:username) && !has_totag())
>> in your case. But that only works if the device received the initial 100
>> Trying with a tag from Kamailio.
>>
>> But might it not be better to just do the count in the INVITE and
>> adding/deleting of dialogs in the dialog event routes?
>> http://kamailio.org/docs/modules/stable/modules_k/dialog.html#id2556156
>> Problem here is that if the limit is 5 and and there are more than 5
>> concurrent INVITES you'd have to drop calls with a 200 OK response.
>>
>> --
>>
>> POCOS B.V. - Croy 9c - 5653 LC Eindhoven
>> Telefoon: 040 293 8661 - Fax: 040 293 8658
>> http://www.pocos.nl/   - http://www.sipo.nl/
>> K.v.K. Eindhoven 17097024
>>
>
>
>
> --
> *Bayram KARAGÖZ*
>
> *NGN Engineer*
>
> *-----------------------------------------*
>
> *@*   bayram at bayramkaragoz.org
>
> *:**  *www.bayramkaragoz.org
>
> *-----------------------------------------*
>



-- 
*Bayram KARAGÖZ*

*NGN Engineer*

*-----------------------------------------*

*@*   bayram at bayramkaragoz.org

*:**  *www.bayramkaragoz.org

*-----------------------------------------*
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