Bogdan

 

I understand, thank you

 

 

From: Bogdan-Andrei Iancu [mailto:bog...@opensips.org] 
Sent: Tuesday, May 10, 2011 12:56 PM
To: Denis Putyato
Cc: 'OpenSIPS users mailling list'
Subject: Re: [OpenSIPS-Users] dialog and acc

 

Hi Denis,

Yes, before the loose_route(), and it is critical as for sequential requests, 
the matching against existing dialogs is done somewhere inside loose_route() 
(via some callbacks). And when the dialog is matched, the dialog timeout is 
updated, so this is why you need to populate the AVP for dialog timeout before 
the loose_route.

Dialog related variables will be available available after the loose_route(), 
when the dialog was matched, so the dialog cotext is available.

Regards,
Bogdan

On 05/10/2011 11:51 AM, Denis Putyato wrote: 

Bogdan, one more question

You wrote “2) at ACK, before loose_route()”

Why before? Is this critical? 

I want to use $dlg_status variables to check if dialog exists (When received 
ACK), but in documentation said that this variables works only after 
loose_route() function

 

From: Bogdan-Andrei Iancu [mailto:bog...@opensips.org] 
Sent: Tuesday, May 10, 2011 12:43 PM
To: Denis Putyato
Cc: 'OpenSIPS users mailling list'
Subject: Re: [OpenSIPS-Users] dialog and acc

 

Hi Denis,

I can tell it works for sure, as I'm using this kind of dirty trick to cope 
with some buggy clients.

Best regards,
Bogdan

On 05/10/2011 06:42 AM, Denis Putyato wrote: 

Hello!

 

Thank you Bogdan, I will try you decision

 

From: Bogdan-Andrei Iancu [mailto:bog...@opensips.org] 
Sent: Friday, May 06, 2011 9:25 PM
To: OpenSIPS users mailling list
Cc: Denis Putyato
Subject: Re: [OpenSIPS-Users] dialog and acc

 

Hi Denis,

>From a proxy point of view, a 200OK means the dialog was establish. A proxy 
>cannot interfere with the ACK part - the acknowledgment is done between end 
>parties.

If the ACK is missing (in an established dialog), the callee party (according 
to RFC) must send a BYE (when finishing the 200 OK retransmission) to the 
caller.  This is something your callee doesn't do.

A simple work around is to use the dialog timeout in opensips:
    1) at INVITE time, when dialog is created, set a 5 seconds timeout (dialog 
will be terminated by opensips, with BYE, in 5 secs after being established - 
do not forget to set the BYE_ON_TIMEOUT flag)
    2) at ACK, before loose_route() set a new timeout to some long, long (3 
hours?) value.

So, if the ACK will mis, the 5 sec timeout will kick in and terminate the 
dialog; otherwise, opensips will prelong the dialog on ACK time.

Regards,
Bogdan

On 04/28/2011 03:06 PM, Denis Putyato wrote: 

Hello!

 

I noticed that cdr_flag in acc modules marks dialog for accounting as answered 
even there was no ACK on 200 OK.

As a result, I have acc record which has a big duration and status 200 OK.

 

Thank you for any help.

 

 

 

 
 
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-- 
Bogdan-Andrei Iancu
OpenSIPS eBootcamp - 2nd of May 2011
OpenSIPS solutions and "know-how"







-- 
Bogdan-Andrei Iancu
OpenSIPS eBootcamp - 2nd of May 2011
OpenSIPS solutions and "know-how"






-- 
Bogdan-Andrei Iancu
OpenSIPS eBootcamp - 2nd of May 2011
OpenSIPS solutions and "know-how"
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