[sr-dev] Problem with Registration on pcscf

[Carsten Bock]

Hi Hugh, Hi Paul.

any chance, that you send us your SIPP-scripts? We can test all our
own use-cases (but they work already), but in order to fix (and
correctly understand) this, we need to reproduce your problem...

Thanks,
Carsten


2014-02-06 Hugh Waite <hugh.waite at crocodile-rcs.com>:
> Hi,
> This system is using GIT master built on December 18th and has the 'fallback
> to ip' modparam set - which is being used in this case because all clients
> are behind a cloud based NAT.
>
> The problem occurs when there are multiple entries for a user in the usrloc
> table, but ul.get_pcontact(...) only ever returns one. which may not match
> the contact or the source IP/port.
>
> We believe that the multiple entries should be returned and looped round to
> check for matches.
> Multiple entries can be easily created by disconnecting a TCP client (or
> sipp script) without deregistering and connecting + registering again from a
> different ephemeral port.
>
> Regards,
> Hugh
>
>
> On 05/02/2014 14:09, Carsten Bock wrote:
>>
>> Hi Paul,
>>
>> since probably i'm the guilty one, i would check. In order to quickly
>> reproduce that issue, some quick questions:
>> - you are using GIT master? I've made some changes in GIT master
>> (compared to 4.1) in terms of detecting, if a user is registered...
>>
>> Can you send me the SIPP-Scripts?
>> I will then check next week for this topic.
>>
>> Thanks for testing,
>> Carsten
>>
>>
>>
>> 2014-01-29 Paul Pankhurst <paul at crocodile-rcs.com>:
>>>
>>> Hi Jason,
>>>
>>>
>>>
>>> I've not done anything further on this since Friday, as I've been busy on
>>> other things.
>>>
>>>
>>>
>>> If you have trouble reproducing it I can send you my sipp scripts and
>>> some
>>> wireshark traces if it helps.
>>>
>>>
>>>
>>> Paul
>>>
>>>
>>>
>>>
>>>
>>> From: sr-dev-bounces at lists.sip-router.org
>>> [mailto:sr-dev-bounces at lists.sip-router.org] On Behalf Of Jason Penton
>>> Sent: 29 January 2014 07:52
>>> To: Kamailio (SER) - Development Mailing List
>>> Subject: Re: [sr-dev] Problem with Registration on pcscf
>>>
>>>
>>>
>>> Hey Paul,
>>>
>>>
>>>
>>> Sorry for the delay on this. I had missed it. I will see if I can
>>> re-create
>>> and get back to you. Have you maanged to do any more testing since?
>>>
>>>
>>>
>>> Cheers
>>>
>>> Jason
>>>
>>>
>>>
>>> On Fri, Jan 24, 2014 at 5:42 PM, Paul Pankhurst <paul at crocodile-rcs.com>
>>> wrote:
>>>
>>> I've noticed a problem with registrations on the pcscf when doing some
>>> testing with sipp
>>>
>>> If I send in a REGISTER with SIPP followed by an INVITE calls go through
>>> my
>>> system no problem.
>>> If I then stop the sipp script and run it again, I find that although the
>>> registration succeeds, subsequent INVITES are rejected telling me that I
>>> have not registered!
>>> If I unregister at the end of my script everything is fine, and the
>>> problem
>>> goes away after the original REGISTRATION times out, so this led me to
>>> think
>>> that we had a problem with multiple registrations entries in the system.
>>>
>>> The problem seems to be a result of the fact that sipp always places the
>>> same ip address and port number on the contact line when using tcp
>>> connections.
>>>
>>> I've had a look through the code and believe that we are getting multiple
>>> entries in the usrloc hash table in this scenario, and ul_get_pcontact
>>> only
>>> ever returns the first one which causes pcscf_is_registered to
>>> incorrectly
>>> report that the UE is not registered.
>>>
>>> Paul
>>>
>>> _______________________________________________
>>> sr-dev mailing list
>>> sr-dev at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> sr-dev mailing list
>>> sr-dev at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>>>
>>
>>
>
>
> --
> Hugh Waite
> Principal Design Engineer
> Crocodile RCS Ltd.
>
>
>
> _______________________________________________
> sr-dev mailing list
> sr-dev at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev



-- 
Carsten Bock
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