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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