[SR-Users] Dialog module generates error since upgrade to 4.2.2

Klaus Darilion klaus.mailinglists at pernau.at
Mon Jan 26 11:48:04 CET 2015


Hi Daniel!

Your fix solves the problem (not heavily tested) - now the dialog module
destroys the dialog after config exit.

thanks
Klaus

On 24.01.2015 23:05, Daniel-Constantin Mierla wrote:
> Can you try the latest version of branch 4.2? I pushed a fix that should
> solve this one as well.
> 
> Let me know the results.
> 
> Cheers,
> Daniel
> 
> On 23/01/15 13:40, Jan Hazenberg wrote:
>> Daniel,
>>
>> Let me know if you need some debugs from my side. I have 4.2.2 and
>> 4.2.1 running and can reproduce the problem if needed.
>>
>> Jan
>>
>> Daniel-Constantin Mierla schreef op 2015-01-23 13:38:
>>> I hope to get the time to look into it either this evening or over the
>>> weekend. I have some other logs sent to me for a dialog issue.
>>>
>>> Daniel
>>>
>>> On 23/01/15 12:40, Jan Hazenberg wrote:
>>>> I indeed see the same spiral messages in the logs as well:
>>>>
>>>> Jan 22 14:50:33 sip /usr/sbin/kamailio[14084]: DEBUG: dialog
>>>> [dlg_handlers.c:831]: dlg_new_dialog(): Callid
>>>> '035a329653a80be399f7b45e6c734415 at 192.168.149.126' found, must be a
>>>> spiraled request
>>>>
>>>> Jan
>>>>
>>>>
>>>> Klaus Darilion schreef op 2015-01-23 11:38:
>>>>> I think the problem with 4.2.2. is the following:
>>>>>
>>>>> After dialog cleanup code is not executed after script exit. Thus, if
>>>>> the dialog is created without generating a transaction, e.g.:
>>>>>    ...
>>>>>    dialog_manage();
>>>>>    ... some checks
>>>>>    sl_send_reply();
>>>>>    exit;
>>>>>
>>>>> the dialog is created, but not destroyed after exit. Thus, next time a
>>>>> request with identical dialog IDs (e.g the second INVITE after
>>>>> authentication) is received, Kamailio finds the un-destroyed dialog
>>>>> and
>>>>> falsely think this message belongs to a spiraled request and thus does
>>>>> not register the tm_callbacks for the responses. Thus, the dialog
>>>>> stays
>>>>> in state 1 forever.
>>>>>
>>>>> Probably there are 2 bugs:
>>>>>
>>>>> 1. The dialog callbacks are not executed on script exit (this works
>>>>> fine
>>>>> in Kamailio 4.1.7)
>>>>>
>>>>> 2. The spiral detection code is buggy. Just because a dialog exists is
>>>>> not a proof for a spiral. In fact, a request with only 1 Via header
>>>>> can
>>>>> never be a spiraled request.
>>>>>
>>>>> regards
>>>>> Klaus
>>>>>
>>>>>
>>>>>
>>>>> On 22.01.2015 21:02, Jan Hazenberg wrote:
>>>>>> Klaus,
>>>>>>
>>>>>> Yes, that solves the problem here as well.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Jan
>>>>>>
>>>>>> Klaus Darilion schreef op 2015-01-22 16:16:
>>>>>>> Hi Jan!
>>>>>>>
>>>>>>> I replaced dlg_manage with setflag(dialog flag). This way the
>>>>>>> dialog is
>>>>>>> created only when a transaction is created. It solved my problems.
>>>>>>>
>>>>>>> regards
>>>>>>> Klaus
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 22.01.2015 14:47, Klaus Darilion wrote:
>>>>>>>> Nice, I have the same problem after upgrading from 4.1.7 to 4.2.2.
>>>>>>>> ....
>>>>>>>> ..... in my case it seems the dialog callbacks are not executed for
>>>>>>>> responses ... I am still debugging .....
>>>>>>>>
>>>>>>>> On 22.01.2015 13:25, Jan Hazenberg wrote:
>>>>>>>>> Hi All,
>>>>>>>>>
>>>>>>>>> I'm running into a issue with the dialog module since the upgrade
>>>>>>>>> from
>>>>>>>>> 4.2.1 to 4.2.2. I use the dialog module to add extra vars to the
>>>>>>>>> cdr's
>>>>>>>>> generated by the ACC module.
>>>>>>>>>
>>>>>>>>> I use the following config:
>>>>>>>>>
>>>>>>>>> # ----- dialog params -----
>>>>>>>>> modparam("dialog", "enable_stats", 1)
>>>>>>>>> modparam("dialog", "dlg_match_mode", 1)
>>>>>>>>> modparam("dialog", "dlg_flag", FLT_DLG)
>>>>>>>>> modparam("dialog", "rr_param", "did")
>>>>>>>>> modparam("dialog", "wait_ack", 1)
>>>>>>>>>
>>>>>>>>> # Create dialog
>>>>>>>>> if (method=="INVITE") {
>>>>>>>>>      # Create Dialog
>>>>>>>>>      dlg_manage();
>>>>>>>>>
>>>>>>>>>      # Add test dialog var
>>>>>>>>>      $dlg_var(src_ua) = $hdr(User-Agent);
>>>>>>>>> }
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> This seems to work fine on kamailio 4.2.1 but after the upgrade i
>>>>>>>>> see
>>>>>>>>> the following errors in the logs:
>>>>>>>>>
>>>>>>>>> Jan 22 13:16:57 sip /usr/sbin/kamailio[2773]: CRITICAL: dialog
>>>>>>>>> [dlg_hash.c:901]: log_next_state_dlg(): bogus event 6 in state
>>>>>>>>> 1 for
>>>>>>>>> dlg
>>>>>>>>> 0x7f2f0332ed40 [3693:11222] with clid
>>>>>>>>> '9192c5fc24627a14c2ec42f084a96587 at 192.168.149.126' and tags
>>>>>>>>> '4017642921' ''
>>>>>>>>> Jan 22 13:17:01 sip /usr/sbin/kamailio[2770]: CRITICAL: dialog
>>>>>>>>> [dlg_hash.c:901]: log_next_state_dlg(): bogus event 7 in state
>>>>>>>>> 1 for
>>>>>>>>> dlg
>>>>>>>>> 0x7f2f0332ed40 [3693:11222] with clid
>>>>>>>>> '9192c5fc24627a14c2ec42f084a96587 at 192.168.149.126' and tags
>>>>>>>>> '4017642921' ''
>>>>>>>>>
>>>>>>>>> If i'm correct "bogus event 6 in state 1" indicates that a ACK
>>>>>>>>> whas
>>>>>>>>> received while the dialog still was in unconfirmed state. Should i
>>>>>>>>> catch
>>>>>>>>> the 200 OK on the INVITE to update the dialog?
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>>
>>>>>>>>> Jan Hazenberg
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
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>>>>>>>>
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