[sr-dev] Problem with Registration on pcscf

[Paul Pankhurst]

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

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