[SR-Users] Ro_CCR function

[Shane Harrison]

Hi all,

In a previous post I was alerted to the (perhaps obvious) fact that that ims_charging module is design to run within an IMS environment:
http://lists.sip-router.org/pipermail/sr-users/2015-January/086675.html

I have subsequently attempted to modify the module to work with the standard usrloc Kamailio module.  I decided to branch from the 4.2.2 release rather than the master since I was unsure of the state of the ims_charging module in the master.   It now compiles fine and installs.  I also have the cdp module talking watchdog_requests to a freeDiameter server so at that level things seem OK.

However inserting the Ro_CCR() call into the kamailio cfg file shows up some problems, primarily:
Feb  2 01:05:52 hh-rcs-sipproxy3 /usr/sbin/kamailio[6473]: WARNING: usrloc [dlist.c:624]: register_udomain(): Registering a new domain called 'voip.we-rcs.flowcloud.systems' with usrloc
Feb  2 01:05:52 hh-rcs-sipproxy3 /usr/sbin/kamailio[6473]: ERROR: <core> [db.c:443]: db_check_table_version(): invalid version 0 for table voip.we-rcs.flowcloud.systems found, expected 6 (check table structure and table "version")

Exploring this error leads me to a few questions:

1)      The 4.2.2 Ro_CCR() has the diameter domain as a parameter.  The addition of this function to my kamailio.cfg file causes ro_fixup() ->  domain_fixup() -> ul.register_domain which as per the log above, attempts to look for a table with the same name as the domain.  Is it expected that such a table exists, for standard Kamailio I thought all usrloc records simply go into the Location table , regardless of the domain.

2)      What is the purpose of the ro_fixup()

3)      I notice that the 4.3 module documentation for ims_charging module has 6 parameters for the function call while the example code given in the same section as only 5 (missing domain).  The code from the master branch for the function is different again  - not sure if 4.3 is still in quite a bit of flux or not for the ims_charging module?

4)      Should I be using 4.3 ims_charging module as a starting point or is 4.2.2 good enough i.e are there major changes?

At this stage I am going to create a table for the domain but would like some clarity on how the usrloc and domains relate to table names.

Kind regards
Shane

Shane Harrison
Senior Software Engineer

Imagination Technologies NZ Limited
Level 2
1 Market Grove
Lower Hutt, 5010
New Zealand

PO Box 30-449
Lower Hutt, 5040
New Zealand

Phone: +64 4 890-3681 ext 3361

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