[SR-Users] Expect the kamailio's sip account is unregistered state when the client app is shutdown

[Daniel-Constantin Mierla]

IIR, the keepalives are sent stateless, so no transactions are create
for them. Just OPTIONS packets sent out, resulting in less load on
kamailio (well, comparing with normal transactional forwarding). The
mechanism behind detecting offline users with keepalives is based on a
counter kept in memory for the location record, which is reset if the
reply to OPTIONS comes back. If there are three (or so) keepalives sent
out and none was replied, then the record is removed. Practically there
is no retransmission for those keepalive requests, no special states,
just this counter in memory per location record. Given this, (again
iirc), this feature doesn't work with db_mode set to database only.

Cheers,
Daniel

On 20/04/15 10:46, Mickael Marrache wrote:
> Didn't know about that, it's interesting.
>
> I'm curious about the load impact of this feature, since keepalives are
> generally sent every 30 sec. 
>
> -----Original Message-----
> From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of
> Daniel Grotti
> Sent: Monday, April 20, 2015 11:40 AM
> To: sr-users at lists.sip-router.org
> Subject: Re: [SR-Users] Expect the kamailio's sip account is unregistered
> state when the client app is shutdown
>
> Hi,
> you may want to use:
>
> http://www.kamailio.org/docs/modules/4.2.x/modules/nathelper.html#nathelper.
> p.keepalive_timeout
>
>
> --
> Daniel Grotti
> VoIP Engineer
>
>
> Sipwise GmbH
> Europaring F15 | 2345 Brunn am Gebirge, Austria | www.sipwise.com
>
> On 04/20/2015 10:34 AM, Filip Malenka wrote:
>> Thank you for information..
>> What can Kamailio do about clients, that exit abnormally (e.g. crash, turn
> off, ..) which do unregister properly? Can Kamailio send this "expire=0" on
> behalf of these clients?
>> Can Kamailio determine that a client got offline based on e.g. TLS
> connection or other "heartbeats"?
>> On 20.04.2015 10:16, Daniel Grotti wrote:
>>> Hi,
>>> here you are:
>>>
>>> https://tools.ietf.org/html/rfc3665#section-2.4
>>>
>>>
>>>
>>> --
>>> Daniel Grotti
>>> VoIP Engineer
>>>
>>>
>>> Sipwise GmbH
>>> Europaring F15 | 2345 Brunn am Gebirge, Austria | www.sipwise.com
>>>
>>> On 04/20/2015 10:10 AM, Mickael Marrache wrote:
>>>> Hi,
>>>>
>>>>  
>>>>
>>>> You need to configure your client to un register when the app is closed.
>>>>
>>>>  
>>>>
>>>> For that, your client must send a REGISTER with Expires: 0.
>>>>
>>>>  
>>>>
>>>> Mickael
>>>>
>>>>  
>>>>
>>>> *From:*sr-users [mailto:sr-users-bounces at lists.sip-router.org] *On 
>>>> Behalf Of *xuefeng zhang
>>>> *Sent:* Monday, April 20, 2015 10:58 AM
>>>> *To:* Daniel-Constantin Mierla; Kamailio (SER) - Users Mailing List
>>>> *Subject:* [SR-Users] Expect the kamailio's sip account is 
>>>> unregistered state when the client app is shutdown
>>>>
>>>>  
>>>>
>>>> Hi Daniel,
>>>>
>>>>  
>>>>
>>>> When the client's app is closed,the sip account may be registered 
>>>> state,because the expired time may have some rest time.I want to 
>>>> implement when the client's app is closed,the account also unregister.
>>>>
>>>>  
>>>>
>>>> How can I implement this function?Would you give me some advices?
>>>>
>>>>  
>>>>
>>>> Thanks!
>>>>
>>>>  
>>>>
>>>> Xuefeng Zhang
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> 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
>>>
>>
>> _______________________________________________
>> 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
>>
> _______________________________________________
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> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
>
> _______________________________________________
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> sr-users at lists.sip-router.org
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-- 
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