[SR-Users] Kamailio - DMQ dns srv Question

[José Seabra]

Hi Charles
I have modparam("dmq", "multi_notify", 1) because my A record resolves more
than one Kamailio addresses, and if i understood well the documentation
says that we need set it to a value different of 0 to resolve all ip
addresses associated to the Name configured on DMQ.
I'm using DMQ with 4 kamailio instances, so i think that i need have it set
to a value different than 0, or i'm wrong?.

Documentation says:

Enables the ability to resolve multiple IPv4/IPv6 addresses for a single
notification address.

A value of zero resolves to the first IP address found. A non-zero value
resolves to all IP addresses associated with the host. This includes
addresses from DNS SRV records, A and AAAA records.

*Default value is “0”.*

Thank you
Cheers
José



2016-09-22 13:28 GMT+01:00 Charles Chance <charles.chance at sipcentric.com>:

> Hey,
>
> On 22 September 2016 at 12:18, José Seabra <joseseabra4 at gmail.com> wrote:
>
>> Hello Daniel and Charles,
>> Thank you for your feedback.
>> Another doubt is when we use a FQDN that only resolves as A record, would
>> be better DMQ send only a A query or is there any reason for always try SRV?
>>
>>
> As far as I recall (it's been a while since I did anything with this), the
> default behaviour is to query A record only. There is a mod_param to enable
> multi-record/SRV lookup:
>
> modparam("dmq", "multi_notify", 1)
>
> But the default is off.
>
> Is this not the behaviour you are seeing?
>
> Cheers,
> Charles
>
>
>
>
>> Thank you for your great job.
>>
>> BR
>> José Seabra
>>
>> 2016-09-22 8:33 GMT+01:00 Charles Chance <charles.chance at sipcentric.com>:
>>
>>> Hello,
>>>
>>> I can take a look today.
>>>
>>> Cheers,
>>> Charles
>>>
>>> On 22 Sep 2016 06:20, "Daniel-Constantin Mierla" <miconda at gmail.com>
>>> wrote:
>>>
>>>> Hello,
>>>>
>>>> I guess that the one who did the implementation of the srv query for
>>>> dmq hasn't "allocated" any service name. I haven't looked at the sources,
>>>> but I guess it should be a small patch to compose the srv dns string to be
>>>> queried -- maybe that part can be made a mod param so each can choose its
>>>> preferred service.
>>>>
>>>> Cheers,
>>>> Daniel
>>>>
>>>> On 21/09/16 19:28, José Seabra wrote:
>>>>
>>>> Hello,
>>>> I have a doubt related with DMQ dns behavior, I noticed that when
>>>> kamailio starts, it tries to resolve DMQ name configured on parameter
>>>> notification_address as the following sequence:
>>>>
>>>>    1. SRV
>>>>    2. A
>>>>    3. AAAA
>>>>
>>>>
>>>> Isn't supposed kamailio  try first resolve the  NAPTR DMQ name, and
>>>> then SRV?
>>>> I'm asking this because kamailio is trying resolve the SRV record
>>>> without any transport protocol specified on query, as my dns server only
>>>> accepts queries on the format "_Service._Proto.Name" the SRV will never be
>>>> resolved.
>>>>
>>>> Thank you.
>>>> BR
>>>> --
>>>> José Seabra
>>>>
>>>>
>>>> _______________________________________________
>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users at lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>>>>
>>>> --
>>>> Daniel-Constantin Mierlahttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>>> Kamailio Advanced Training, Berlin, Oct 24-26, 2016 - http://www.asipto.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
>>>>
>>>>
>>> Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered
>>> office: Faraday Wharf, Innovation Birmingham Campus, Holt Street,
>>> Birmingham Science Park, Birmingham B7 4BB.
>>>
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
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>>>
>>>
>>
>>
>> --
>> Cumprimentos
>> José Seabra
>>
>> _______________________________________________
>> 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
>>
>>
>
>
>
> Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered
> office: Faraday Wharf, Innovation Birmingham Campus, Holt Street,
> Birmingham Science Park, Birmingham B7 4BB.
>
> _______________________________________________
> 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
>
>


-- 
Cumprimentos
José Seabra
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