[OpenSIPS-Users] ACK doesnt get routed to endpoint

[Arnold Vriezekolk NETZOZEKER B.V.]

Hey Bogdan,

You're right about that. My idea was that i could fix this problem with
scripting. This is obviously wrong. I had no idea of how to get the correct
contact information into the sip packet, so i tried to solve it this way.

What i'm seeing in the sip trace is that the 200 OK from our opensips proxy
has the correct contact information in it, but our sip provider sends back the
ACK without this contact information. So the problem is not on our opensips
side, but on the provider side. Would you say this is correct?

Thanks for the clarification on the dialog variables.

Best Regards,

Arnold Vriezekolk


On Tue, 28 Feb 2012, Bogdan-Andrei Iancu wrote:

> Hi Arnold,
>
> If I understand you right, instead on focusing on fixing the root error, you 
> are trying to cope with it in your script.
>
> As I said, the ACK you receive on .90 (from the previous hops) is bogus as it 
> has incomplete route set (the contact info of callee is missing). So, it is 
> not a problem in your script, but a problem with the previous SIP hops.
>
> Also, to answer to your questions - yes the ACK is part of the same dialog. 
> But note that the dialog variables will be available (for ACK) only after 
> doing the loose_route() - here is where the ACK is matched against the 
> dialog. To check if the ACK matched the dialog (after loose_route), check the 
> $DLG_status variable - if it is NULL, your ACK did not matched.
>
> Regards,
> Bogdan
>
> On 02/28/2012 12:01 PM, Arnold Vriezekolk NETZOZEKER B.V. wrote:
>> Thanks for the reply Bogdan,
>> 
>> If the ACK has the same tag in the From header as the initial INVITE, isnt
>> that considered the same dialog?
>> 
>> What i'm trying to achieve is set an AVP variable that has some information
>> about this call. Whenever i try to reach the variable at the point the ACK
>> message comes in from our sip provider the variable is empty.
>> 
>> How can i make sure that when i set a variable at the initial INVITE i can
>> reach it when the ACK comes in? Script variables also dont seem to work for
>> me because they get overwritten. I might be able to set a variable based on 
>> a
>> unique descriptor based on the call.
>> 
>> Best Regards,
>> 
>> Arnold Vriezekolk
>> 
>> On Fri, 24 Feb 2012, Bogdan-Andrei Iancu wrote:
>> 
>>> Hi Arnold,
>>> 
>>> The ACK you get in .90 is bogus, as it should have in RURI the .130 IP 
>>> from the
>>> 200 OK Contact. Actually the end-point info from 200 OK (the .130) is not 
>>> present
>>> at all in the ACK, so basically the ACK cannot end up to that end point at 
>>> all.
>>> 
>>> Regards,
>>> Bogdan
>>> 
>>> On 02/24/2012 04:47 PM, Arnold Vriezekolk NETZOZEKER B.V. wrote:
>>>       Hi,
>>>
>>>       In our setup we have a connection to a sip provider for incoming
>>>       lines. We use
>>>       opensips with the uac_registrant module to connect to this sip
>>>       provider.
>>>
>>>       Whenever a call comes in, i use rewriteuri() and t_relay() to send 
>>> it
>>>       to an
>>>       endpoint. When i pick up the call on my endpoint the ACK message 
>>> from
>>>       the sip
>>>       provider doesn't get routed back to my endpoint, but somehow gets
>>>       stuck in
>>>       opensips. Thus failing the call after 3 seconds.
>>>
>>>       The ACK should be routed by the default sequential request block in
>>>       the
>>>       request route[0] afaik but it doesnt.
>>>
>>>       Can anyone point me as to where i can fix this problem?
>>>
>>>       I attached a pcap dump of the call for debugging purposes.
>>>       Endpoint: sip:EEEEEEEE at netzozeker.tel.netzozeker.nl (95.97.29.130)
>>>       SIP provider: 89.184.172.54
>>>       OpenSIPS: 195.60.212.90
>>>
>>>       If you need more information please let me know, i can attach the
>>>       opensips.cfg
>>>       and the log of opensips for more debugging purposes.
>>>
>>>       Best Regards,
>>>
>>>       Arnold Vriezekolk
>>> 
>>> 
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>> 
>>> 
>>> 
>>> -- 
>>> Bogdan-Andrei Iancu
>>> OpenSIPS Founder and Developer
>>> http://www.opensips-solutions.com
>>> 
>>> 
>
>
> -- 
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
> http://www.opensips-solutions.com
>
>