[OpenSIPS-Users] False dialogs due to network failures

[Bogdan-Andrei Iancu]

Hi Jorge,

Any SIP client must answer to an incoming request (even if it 
understands it or not) - it must send back some reply. The dialog module 
terminates the call if it gets a timeout (408) of 487 
(transaction/dialog not found) from the client. Other negative replies 
are not considered.

Usually, the risk is to have clients blindly answering with 200 OK to 
any OPTIONS (even if the dialog does not exist).

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 17.07.2014 10:15, Jorge Luis Ortea wrote:
> Yes, the "B" flag was already configured (6 hours).
>
> But, might have a problem with Pp flag if a UAC don't reply to SIP 
> OPTIONS messages?
>
> Thanks.
> Regards.
>
>
> ------------------------------------------------------------------------
> Date: Wed, 16 Jul 2014 15:35:07 +0300
> From: bogdan at opensips.org
> To: users at lists.opensips.org; darham at hotmail.com
> Subject: Re: [OpenSIPS-Users] False dialogs due to network failures
>
> Or, be sure and set a reasonable dialog lifetime (like maybe 2 hours) 
> together with the "B" flag (to send BYEs one dialog timeout).
>
> Regards,
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
> http://www.opensips-solutions.com
> On 16.07.2014 13:14, Schneur Rosenberg wrote:
>
>     create_dialog with Pp flag.
>
>     On Jul 16, 2014 10:45 AM, "Jorge Luis Ortea" <darham at hotmail.com
>     <mailto:darham at hotmail.com>> wrote:
>
>
>         Hi all,
>
>         I'm using OpenSIPS 1.8. with several Asterisk. When Proxy SIP
>         manages a call keeps a dialog with (called,caller,Asterisk)
>         through store_dlg_value function from dialog module. Later
>         through get_dialog_info function it match calls and resolves
>         transfers issue.
>
>         I have the following problem, when a network failure occurs
>         those dialogs keep on and this generate errors.
>         How can I avoid this and remove those dialogs?
>
>         Note: I don't know if it can be useful but 'Failure Route' is
>         performed shortly after the failure.
>
>         Thanks.
>         Regards.
>
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