[SR-Users] dialog module : questions about dialog states

[Abdoul Osséni]

Thank you for your help.

We use TLS protocol from mobile networks.

In most cases we have no problems during the three way handshake (invite ->
200Ok -> ACK).

But sometimes, we didn't received the ACK of 200OK (the TCP connection
appears broken during the three way handshake per example). In this case,
we need to cancel the calls to avoid charging customers.

our goal is to use tpcops (tcp:closed, tcp:reset event routes), htable,
dialog and tmx modules to cancel (t_reply_callid) or terminate(dlg_bye)
these calls.

May be , is there a better solution?

Abdoul OSSENI
Ingénieur DevOps chez Néo-Soft
Co-Fondateur de ON SERVICES
Tél : +33 601 135 167

2018-07-19 21:21 GMT+02:00 Daniel-Constantin Mierla <miconda at gmail.com>:

> If state < 0, then practically the INVITE transaction is active, it needs
> to be cancelled or replied with t_reply(...) and a code >=400.
>
> From where you need to terminate this ongoing INVITE, from kamailio.cfg or
> from external app?
>
> Cheers,
> Daniel
>
> On 19.07.18 19:20, Abdoul Osséni wrote:
>
> ERRATUM.
>
> What is the best way to end calls for states < 3 ?
>
> Abdoul OSSENI
> Ingénieur DevOps chez Néo-Soft
> Co-Fondateur de ON SERVICES
> Tél : +33 601 135 167
>
> 2018-07-19 19:19 GMT+02:00 Abdoul Osséni <abdoul.osseni at gmail.com>:
>
>> Thank you Daniel.
>> What is the best way to end calls for states 3 and 4 ?
>>
>> Regards
>>
>> Abdoul OSSENI
>> Ingénieur DevOps chez Néo-Soft
>> Co-Fondateur de ON SERVICES
>> Tél : +33 601 135 167
>>
>> 2018-07-19 18:49 GMT+02:00 Daniel-Constantin Mierla <miconda at gmail.com>:
>>
>>> Hello,
>>>
>>>
>>> On 19.07.18 18:15, Abdoul Osséni wrote:
>>> > Hello list,
>>> >
>>> > When the dialog state for a call is < 4, is it possible to use
>>> > dlg_bye() function to end the call?
>>> >
>>> it should be possible to use it for states 3 and 4.
>>>
>>> Lower state than 3 means that the dialog was not answered yet (no 200ok
>>> received). While SIP allows BYE at that stage to end a particular branch
>>> of the call, dialog module needs the 200ok, as it operates at dialog
>>> level, not at transaction/branch level.
>>>
>>> Cheers,
>>> Daniel
>>>
>>> --
>>> Daniel-Constantin Mierla -- www.asipto.com
>>> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>>> Kamailio World Conference -- www.kamailioworld.com
>>>
>>>
>>
>
> --
> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio World Conference -- www.kamailioworld.com
>
>
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