[SR-Users] [Dialog] Removing entries from dialog memory
Daniel-Constantin Mierla
miconda at gmail.com
Mon Oct 21 15:33:05 CEST 2019
Hello,
On 21.10.19 14:59, Julien Klingenmeyer wrote:
>
> Hi,
>
>
>
> Just a follow-up about my issue.
>
> As I was not able to remove the dialog as I wanted, I preferred to
> create a new small RPC command to handle it.
>
> This new command forces a dialog (identified by call-id and tags) to
> be removed “silently” (i.e. without taking care of accounting, dialog
> end routes… and all the other stuff: I did not need to because the
> goal of the command is to deal with “ghost calls”).
>
>
>
> It just updates state of an active dialog (in state 4) to the
> “deleted” state and updates the stats.
>
> It only handles dialog in state 4 because I have no issues with others
> (dialogs in state 3 are regularly removed from memory after the
> corresponding timeout).
>
>
>
> After executing this new command: dialog is completely killed a few
> minutes later when the timer function /dlg_clean_run/ is executed.
>
> (and we can see in the logs the below line:)
>
> /NOTICE: dialog [dlg_hash.c:257]: dlg_clean_run(): dialog in delete
> state is too old/
>
>
>
> Command can be executed from script using the Jsonrpc server module.
>
> I am not sure it could interest other users (could be “dangerous” and
> scope is limited) but if you think it could then I would be happy to
> make a PR on git.
>
you can make a PR with this new feature -- if you document properly the
behaviour of the RPC command as it is, there is no issue with it. This
is not something executed by default, it is done (typically) by a human
that should decide if it provides what it needs or not.
Later, if someone wants to extend it, then they can add options to it to
behave differently.
Cheers,
Daniel
>
>
> Cheers,
>
> --
>
> Julien
>
>
>
> *De : *sr-users <sr-users-bounces at lists.kamailio.org> au nom de Julien
> Klingenmeyer <julien.klingenmeyer at corp.ovh.com>
> *Répondre à : *"Kamailio (SER) - Users Mailing List"
> <sr-users at lists.kamailio.org>
> *Date : *jeudi 17 octobre 2019 à 17:22
> *À : *Henning Westerholt <hw at skalatan.de>, "Kamailio (SER) - Users
> Mailing List" <sr-users at lists.kamailio.org>
> *Objet : *Re: [SR-Users] [Dialog] Removing entries from dialog memory
>
>
>
> Hi Henning,
>
>
>
> Thanks for your reply. There is no particular errors in logs at
> dlg_bye() time.
>
> The dialog is not removed until the original timeout is reached (i.e.
> some hours later). Of that I can be sure because of the log below
> printed at that time:
>
>
>
> /WARNING: dialog [dlg_handlers.c:1616]: dlg_ontimeout(): timeout for
> dlg with CallID '___' and tags '___' '___'/
>
>
>
> During some attempts I managed to get a working scenario (with timeout
> triggered right after BYE request and dialog no more present in memory).
>
> But for now to be honest I do not understand why it worked at these
> times and not most of the time…
>
> I wonder if dlg state stored in memory and/or in DB could have an
> impact regarding this behavior (the routing script indeed uses the
> real-time db mode and the dlg_db_load features).
>
> My first impression is that depending on how the ACK request was
> handled within the dialog, the behavior is different. But I will check
> it further when I find some time.
>
>
>
> Thanks again!
>
>
>
> Regards,
>
> --
>
> Julien
>
>
>
> *De : *Henning Westerholt <hw at skalatan.de>
> *Date : *jeudi 17 octobre 2019 à 11:09
> *À : *"Kamailio (SER) - Users Mailing List" <sr-users at lists.kamailio.org>
> *Cc : *Julien Klingenmeyer <julien.klingenmeyer at corp.ovh.com>
> *Objet : *RE: [SR-Users] [Dialog] Removing entries from dialog memory
>
>
>
> Hi Julien,
>
>
>
> do you get an error from the dlg_bye() execution in the logs? Can you
> check if the dialog maybe only sitting there for some more seconds
> until the delete timer will delete it after the cmd execution?
>
>
>
> Cheers,
>
>
>
> Henning
>
>
>
> --
>
> Henning Westerholt - https://skalatan.de/blog/
>
> Kamailio services - https://skalatan.de/services
>
>
>
> *From:* sr-users <sr-users-bounces at lists.kamailio.org> *On Behalf Of
> *Julien Klingenmeyer
> *Sent:* Friday, October 11, 2019 7:14 PM
> *To:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
> *Subject:* Re: [SR-Users] [Dialog] Removing entries from dialog memory
>
>
>
> I make it receive a 4xx reply (Call does not exist)
>
>
>
>
>
> Le 11 oct. 2019 à 18:32, Sergiu Pojoga <pojogas at gmail.com
> <mailto:pojogas at gmail.com>> a écrit :
>
> Does it receive a 200 OK reply to the BYE?
>
>
>
> On Fri, Oct 11, 2019, 10:55 AM Julien Klingenmeyer,
> <julien.klingenmeyer at corp.ovh.com
> <mailto:julien.klingenmeyer at corp.ovh.com>> wrote:
>
> I tried the end_dlg rpc command but result is the same as the
> dlg_bye function (mistake in my original message, I said
> send_bye but I meant dlg_bye()): BYE requests are sent but
> dialog is still present when I execute the command dlg.list.
> It does not look to be removed from the active dialog list.
>
>
>
> Would it be because Kamailio does not get any replies to the
> Bye requests?
>
>
>
> Regards,
>
> --
>
> Julien
>
>
>
> *De : *sr-users <sr-users-bounces at lists.kamailio.org
> <mailto:sr-users-bounces at lists.kamailio.org>> au nom de Sergiu
> Pojoga <pojogas at gmail.com <mailto:pojogas at gmail.com>>
> *Répondre à : *"Kamailio (SER) - Users Mailing List"
> <sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>>
> *Date : *vendredi 11 octobre 2019 à 16:42
> *À : *"Kamailio (SER) - Users Mailing List"
> <sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>>
> *Objet : *Re: [SR-Users] [Dialog] Removing entries from dialog
> memory
>
>
>
> In simple works, you want to terminate a certain call?
>
>
>
> If
> so: https://kamailio.org/docs/modules/5.1.x/modules/dialog.html#idm1195
>
>
>
> Like for example via RPC: kamctl rpc dlg.end_dlg 1686 10139
>
>
>
> Regards,
>
> --Sergiu
>
>
>
> On Fri, Oct 11, 2019 at 9:12 AM Julien Klingenmeyer
> <julien.klingenmeyer at corp.ovh.com
> <mailto:julien.klingenmeyer at corp.ovh.com>> wrote:
>
> Hi,
>
>
>
> I am wondering if there is any way to remove an entry from
> the active dialog list?
>
> I mean, assuming that Kamailio did not get any BYE related
> to a call for some reason and that I want that call to be
> “killed” from dialog memory before reaching the lifetime
> timeout.
>
>
>
> What I already tried with no success: sending a request to
> Kamailio catched by a dedicated route of the script then:
>
> · using the */dlg_get/* function (with the target
> call as parameter) then */send_bye/* function (then
> dropping the BYE request generated by the dialog module in
> the */onsend_route/* with the */drop/* function): no
> success. Dialog module correctly generates BYE requests
> but dialog related to the call is kept in memory until its
> lifetime timeout (and BYE requests are not dropped in the
> /onsend_route/ either).
>
> · using the */dlg_get/* function then
> */dlg_set_timeout/* to set a very low timeout value for
> that particular call. No successs: /Trying to update a
> bogus dlg /as critical error.
>
>
>
> Could some RPC commands or whatever help me to accomplish
> what I try to do?
>
> Thanks
>
>
>
> Julien
>
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--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training, Oct 21-23, 2019, Berlin, Germany -- https://asipto.com/u/kat
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