[OpenSIPS-Users] Call-id issue in Cancel message generated by tm / $T_fr_inv_timeout

[Bogdan-Andrei Iancu]

Hi Julian,

I will have to test this and come back to you.

Regards,

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

On 10.02.2016 17:45, Julian Santer wrote:
> Hi guys,
>
> we seem to got the same issue like John Nash on 2015/08/12.
> We use OpenSips 2.1.2 with the latest revision from git repo.
>
> Like John we are not sure if it is a bug or our mistake ;-)
>
> We are using topology hiding and the Call ID in the CANCEL, generated 
> by the TM module, is not the same, as the call ID in the initial INVITE.
>
> The call flow looks like:
> PSTN carrier -> gw-carrier (topo hiding) -> core (topo hiding) -> 
> gw-consumer (topo-hiding) -> UAC consumer
>
> The CANCEL generated by the TM module of the core, sended to the 
> gw-consumer is rejected by the gw-consumer.
>
> The CANCEL starts on the core. So let me show you
> 1) the initial INVITE, which the core receives from the gw-carrier 
> (Call-ID: GW-CARRIER)
> 2) the initial INVITE, which the core and sends to the gw-consumer 
> (Call-ID: Core)
> 3) the CANCEL generated by the core after $T_fr_inv_timeout (Call-ID: 
> GW-CARRIER)
>
> 1)
> INVITE sip:12345 at IP_CORE SIP/2.0
> Via: SIP/2.0/UDP IP_GW-CARRIER:5060;branch=z9hG4bK6aa2.7710f555.0
> From: <sip:+396789 at domain>;tag=E3AE5C5C-1A42
> To: <sip:12345 at domain>
> Call-ID: 
> GW-CARRIER_EjJFKHdkNlktdGM2RV93ZV5MWHdlS0wvAn1HN14LYjFHLgRiXU1aHGdCWlcE
> CSeq: 101 INVITE
> Max-Forwards:  8
> Remote-Party-ID: 
> <sip:+396789 at IP_CARRIER>;party=calling;screen=yes;privacy=off
> Contact: <sip:+396789 at IP_GW-CARRIER;rdlg=3db.94186637>
> Expires: 180
> Content-Type: application/sdp
> Content-Length: 474
> sdp ...
>
> 2)
> INVITE sip:12345 at IP_UAC:PORT_UAC SIP/2.0
> Via: SIP/2.0/UDP IP_CORE:5060;branch=z9hG4bK45da.82f6fd55.0
> Route: <sip:IP_GW-CONSUMER;lr>
> From: <sip:+396789 at domain>;tag=E3AE5C5C-1A42
> To: <sip:12345 at domain>
> Call-ID: 
> Core_ExwGCwAcKhgvdAgnFg58LwQGAXUOXSAzC3A1JFB/FCcWCWFzGAQkXHInPFQGDzYYI3oPCCAMahZeEy11JywlCVEG
> CSeq: 101 INVITE
> Max-Forwards:  7
> Remote-Party-ID: 
> <sip:+396789 at IP_CARRIER>;party=calling;screen=yes;privacy=off
> Contact: <sip:+396789 at IP_CORE;rdlg=28e.bad6c124>
> Expires: 180
> Content-Type: application/sdp
> Content-Length: 426
> sdp ...
>
> 3)
> CANCEL sip:12345 at IP_UAC:PORT_UAC SIP/2.0
> Via: SIP/2.0/UDP IP_CORE:5060;branch=z9hG4bK45da.82f6fd55.0
> From: <sip:+396789 at domain>;tag=E3AE5C5C-1A42
> Call-ID: 
> GW-CARRIER_EjJFKHdkNlktdGM2RV93ZV5MWHdlS0wvAn1HN14LYjFHLgRiXU1aHGdCWlcE
> To: <sip:12345 at domain>
> CSeq: 101 CANCEL
> Max-Forwards: 70
> Route: <sip:IP_GW-CONSUMER;lr>
> Reason: SIP;cause=480;text="NO_ANSWER"
> User-Agent: OpenSIPS (2.1.2 (x86_64/linux))
> Content-Length: 0
>
> Kind regards,
> Julian Santer
> Raiffeisen OnLine
>
>
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