[SR-Users] Dialogs not deleted on BYE

Daniel-Constantin Mierla miconda at gmail.com
Wed Mar 18 09:03:32 CET 2015 

Some modules use local variables to store some values to be used later
when an action is done.

In this specific case, the add_rr_param(), which should be used
internally by dialog, is checking to see if the Record-Route header was
added. If yes, then the parameter is added to it. If not, it is kept in
the local variable and record_route() will check that variable to see if
there is anything else to be added to the header.

When suspending and resuming, practically the request handling moves to
another and the local variable is lost.

Cheers,
Daniel

On 17/03/15 23:15, Shane Harrison wrote:
> Yes that worked.  Thanks.  Can you explain why the text ops for adding the parameter aren't transparent to the suspend/resume process.  Would be useful to better understand so I can avoid similar issues in the future.
>
> Cheers and thanks
> Shane
>
>> -----Original Message-----
>> From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of
>> Daniel-Constantin Mierla
>> Sent: Wednesday, 18 March 2015 10:32 a.m.
>> To: Kamailio (SER) - Users Mailing List
>> Subject: Re: [SR-Users] Dialogs not deleted on BYE
>>
>> Can you try moving the record_route() before execution of the ims_charging
>> function?
>>
>> Cheers,
>> Daniel
>>
>> On 17/03/15 22:21, Shane Harrison wrote:
>>> Weird - just listening to your voice on youtube video of talk on async
>>> in kamailio and get your email response.  Sort of "all senses"
>>> response :-)
>>>
>>> Yes have record_route and it is in the route[LOCATION] block.  This is called
>> from the CHARGING_CCR_REPLY block i.e. after the ims_charging function is
>> called.
>>> Cheers
>>> Shane
>>>
>>>> -----Original Message-----
>>>> From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On
>>>> Behalf Of Daniel-Constantin Mierla
>>>> Sent: Wednesday, 18 March 2015 10:16 a.m.
>>>> To: Kamailio (SER) - Users Mailing List
>>>> Subject: Re: [SR-Users] Dialogs not deleted on BYE
>>>>
>>>> Do you have record_route() in your code? Where is it relative to the
>>>> ims_charging function?
>>>>
>>>> Cheers,
>>>> Daniel
>>>>
>>>> On 17/03/15 20:58, Shane Harrison wrote:
>>>>> Thanks Daniel,
>>>>>
>>>>> From the request_route block I call the ims_charging module function
>>>> Ro_CCR().  This is non-blocking and one of the parameters in the call
>>>> is the route block to be called ( e.g. CHARGING_CCR_REPLY ) when the
>>>> response to the charging request is obtained.  Looking at the code,
>>>> the  Ro_CCR() function does a t_suspend() and then the ims_charging
>>>> module does a
>>>> t_continue() when the response is received.  Then the specified
>>>> routing block is called and processing of the INVITE continues.
>>>>> route[CHARGING_CCR_REPLY] {
>>>>>   xlog("L_DBG","cca_return code is $avp(s:cca_return_code)\n");
>>>>>   switch ($avp(s:cca_return_code)) {
>>>>>     case 1: #success
>>>>>         route(LOCATION);
>>>>>         route(RELAY);
>>>>>         break;
>>>>> .....
>>>>> }
>>>>>
>>>>> It appears that the RR parameter that is added during the
>>>>> request_route
>>>> processing (via dialog tracking) is no longer there when the INVITE
>>>> continues being processed in the CHARGING_CCR_REPLY route block.  Is
>>>> that what you would expect? Any pointers to solutions?
>>>>> Hope that answers your question.
>>>>>
>>>>> Cheers
>>>>> Shane
>>>>> ________________________________________
>>>>> From: sr-users [sr-users-bounces at lists.sip-router.org] on behalf of
>>>>> Daniel-Constantin Mierla [miconda at gmail.com]
>>>>> Sent: 18 March 2015 00:24
>>>>> To: Kamailio (SER) - Users Mailing List
>>>>> Subject: Re: [SR-Users] Dialogs not deleted on BYE
>>>>>
>>>>> In what callback do you need it?
>>>>>
>>>>> Cheers,
>>>>> Daniel
>>>>>
>>>>> On 3/17/15, Shane Harrison <Shane.Harrison at imgtec.com> wrote:
>>>>>> Thanks Daniel.  Yes I am using the ims_charging module hence the
>>>>>> need for the dialoguing module.
>>>>>>
>>>>>> I have confirmed that the dialog_id (DID) is added if I t_relay()
>>>>>> the INVITE in the request_route.  Hence dialog_ng is adding the
>>>>>> parameter to the record_route when it creates a new_dialog.  It is
>>>>>> however lost once I exit from request_route.
>>>>>>
>>>>>> How do I ensure the RR parameter gets added when I resume
>>>>>> processing the INVITE in the callback route block?
>>>>>>
>>>>>> Cheers and thanks
>>>>>> Shane
>>>>>> ________________________________________
>>>>>> From: sr-users [sr-users-bounces at lists.sip-router.org] on behalf of
>>>>>> Daniel-Constantin Mierla [miconda at gmail.com]
>>>>>> Sent: 17 March 2015 19:34
>>>>>> To: Kamailio (SER) - Users Mailing List
>>>>>> Subject: Re: [SR-Users] Dialogs not deleted on BYE
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> dialog_ng is more or less tailored for IMS modules, dialog module
>>>>>> is still in use and very actual.
>>>>>>
>>>>>> If you are not using IMS module, you should try the dialog module.
>>>>>> I haven't seen any issues for it lately and if there are, they will
>>>>>> get fixed.
>>>>>>
>>>>>> Cheers,
>>>>>> Daniel
>>>>>>
>>>>>> On 17/03/15 03:28, Shane Harrison wrote:
>>>>>>> Hi all,
>>>>>>>
>>>>>>> Have found a few threads on this before which have clarified my
>>>>>>> understanding a little but not yet presented me with a solution.
>>>>>>>
>>>>>>> I am using dialog_ng.  dlg_manage() is deprecated and as per the
>>>>>>> documentation, I am simply setting a dialog flag early in the
>>>>>>> request_route.
>>>>>>>
>>>>>>> Kamctl dialog show does indeed show the dialogs are tracked, but
>>>>>>> they are not destroyed on the receipt of the BYE.  Dialog ref
>>>>>>> count remains at 2 and in state=4
>>>>>>>
>>>>>>> Log shows the following
>>>>>>>
>>>>>>> Mar 16 22:43:42 hh-rcs-sipproxy3 /usr/sbin/kamailio[15484]: DEBUG:
>>>>>>> tm
>>>>>>> [t_lookup.c:1373]: t_newtran(): DEBUG: t_newtran: msg id=16 ,
>>>>>>> global msg
>>>>>>> id=15 , T on entrance=(nil)
>>>>>>> Mar 16 22:43:42 hh-rcs-sipproxy3 /usr/sbin/kamailio[15484]: DEBUG:
>>>>>>> tm
>>>>>>> [t_lookup.c:527]: t_lookup_request(): t_lookup_request: start
>>>> searching:
>>>>>>> hash=5943, isACK=0
>>>>>>> Mar 16 22:43:42 hh-rcs-sipproxy3 /usr/sbin/kamailio[15484]: DEBUG:
>>>>>>> tm
>>>>>>> [t_lookup.c:485]: matching_3261(): DEBUG: RFC3261 transaction
>>>>>>> matching failed Mar 16 22:43:42 hh-rcs-sipproxy3
>>>>>>> /usr/sbin/kamailio[15484]: DEBUG: tm
>>>>>>> [t_lookup.c:709]: t_lookup_request(): DEBUG: t_lookup_request: no
>>>>>>> transaction found Mar 16 22:43:42 hh-rcs-sipproxy3
>>>>>>> /usr/sbin/kamailio[15484]: DEBUG: tm
>>>>>>> [t_hooks.c:380]: run_reqin_callbacks_internal(): DBG:
>>>>>>> trans=0x7fc8d79af798, callback type 1, id 0 entered Mar 16
>>>>>>> 22:43:42
>>>>>>> hh-rcs-sipproxy3 /usr/sbin/kamailio[15484]: DEBUG:
>>>>>>> dialog_ng [dlg_handlers.c:855]: dlg_new_dialog(): starting
>>>>>>> dlg_new_dialog and method is [BYE]
>>>>>>>
>>>>>>> Looks to me as if fails to find a dialog match and actually
>>>>>>> creates a new dialog.....
>>>>>>>
>>>>>>> Dialog_ng only has one matching mode - DID, others have been
>>>> deprecated.
>>>>>>> I have captured the outgoing INVITE and there is no dialog_id
>>>>>>> parameter added to the record_route.  Is that causing my matching
>>>> problem?
>>>>>>> Record-Route:
>>>>>>> <sip:64.208.160.211;transport=tcp;lr=on;ftag=5419eecb;nat=yes>
>>>>>>> Record-Route: <sip:203.171.39.49:5061;transport=tls;lr=on>
>>>>>>>
>>>>>>> Cheers
>>>>>>> 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
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>>>>>>> list sr-users at lists.sip-router.org
>>>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>>> --
>>>>>> Daniel-Constantin Mierla
>>>>>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>>>>> Kamailio World Conference, May 27-29, 2015 Berlin, Germany -
>>>>>> http://www.kamailioworld.com
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>>>>>> list sr-users at lists.sip-router.org
>>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>>>
>>>>>> _______________________________________________
>>>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>>>>>> list sr-users at lists.sip-router.org
>>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>>>
>>>>> --
>>>>> Daniel-Constantin Mierla - http://www.asipto.com
>>>>> http://twitter.com/#!/miconda -
>>>>>
>> http://www.linkedin.com/in/micond<http://www.linkedin.com/in/miconda
>>>>> _______________________________________________
>>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>>>>> list sr-users at lists.sip-router.org
>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>>
>>>>> _______________________________________________
>>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>>>>> list sr-users at lists.sip-router.org
>>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>> --
>>>> Daniel-Constantin Mierla
>>>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>>> Kamailio World Conference, May 27-29, 2015 Berlin, Germany -
>>>> http://www.kamailioworld.com
>>>>
>>>>
>>>> _______________________________________________
>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>>>> list sr-users at lists.sip-router.org
>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>>> list sr-users at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>> --
>> Daniel-Constantin Mierla
>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Kamailio World Conference, May 27-29, 2015 Berlin, Germany -
>> http://www.kamailioworld.com
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, May 27-29, 2015
Berlin, Germany - http://www.kamailioworld.com

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