[OpenSIPS-Users] B2B Module: Handling negative INVITE responses when using provisional_media

[Bogdan-Andrei Iancu]

Hello Tolga,

Could you provide (off list) a pcap capture for the call along with 
opensips output in debug 4 ?

Best regards,

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


On 01/13/2013 02:14 AM, Tolga Tarhan wrote:
> Hello,
>
> We're using the B2B module to handle REFERs (as our upstream carriers 
> do not handle REFER). Everything works really well when we follow the 
> examples and when everything is successful. However, if the 
> destination of the REFER (not the provisional_media location, but the 
> actual final destination) responds negatively (say 603 or 404), then 
> we see the following log messages
>
> DBG:b2b_logic:b2b_logic_notify_reply: Received a reply [603] while in 
> BRIDGING scenario
> ERROR:b2b_logic:process_bridge_negreply: unexpected entity_no [2] for 
> tuple [0x7f02af7d5278]
> ERROR:b2b_logic:b2b_logic_notify_reply: Failed to process negative 
> reply while in bridging state
>
> And the other existing call leg appears to get stuck. That is, it'll 
> continue to hear the provisional media until that runs out, and then 
> it'll just be hanging there. I would expect that the other call leg be 
> sent a BYE, which is exactly what happens in this scenario when 
> provisional_media is not used.
>
> As far as I can tell, this is a bug in the b2b logic module. I'm happy 
> to try to make a patch and contribute a fix, however, I need a little 
> guidance on what needs to be done (I'm not at all familiar with the 
> internals of this codebase).
>
> Thanks for your help,
> Tolga
>
>
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