[SR-Users] Dispatcher and SUBSCRIBE issue

[Barry Flanagan]

On 08/04/2021 11:37, Daniel-Constantin Mierla wrote:
>
> Hello,
>
> have you changed the value for the force_dst modparam for dispatcher 
> module?
>
>   * 
> https://www.kamailio.org/docs/modules/stable/modules/dispatcher.html#dispatcher.p.force_dst
>
> Also not, iirc, in the older versions the value was 0.
>
Thanks Daniel, this was not explicitly set and is currently running an 
old 4.4 so I will set it and see if it helps, although the docs say it 
defaults to 1.

-Barry

> Cheers,
> Daniel
>
> On 08.04.21 11:58, Barry Flanagan wrote:
>> Hi
>>
>> I am using the dispatcher module with Kamailio as a front-end 
>> Registrar/LB in front of a cluster of Asterisk boxes. I have come 
>> across an issue with SUBSCRIBE messages not getting routed to the 
>> correct server in the event that the phone endpoint's dispatch set is 
>> changed. It will still go to the old server until such time as the 
>> phone is rebooted.
>>
>> The reason this is happening is because the 200 OK in the response 
>> from the Asterisk server has Contact set to its own IP:port and 
>> subsequent in-dialog reSUBSCRIBE are sent with the original Asterisk 
>> ip:port in the RURI. When Kamailio receives these reSUBSCRIBE it does 
>> not change the RURI even though ds_select_dst is being called in the 
>> [WITHIN_DIALOG] route.
>>
>> My feeling is I have two choices - either alter the Contact in the 
>> reply from Asterisk, or, change the RURI manually on receipt of an 
>> in-dialog SUBSCRIBE.
>>
>> Has anyone else come across this, or have advice on the best way to 
>> handle this?
>>
>> Thanks
>>
>> -- 
>>
>> -Barry
>>
>>
>> _______________________________________________
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>> sr-users at lists.kamailio.org
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> -- 
> Daniel-Constantin Mierla --www.asipto.com
> www.twitter.com/miconda  --www.linkedin.com/in/miconda
> Kamailio Advanced Training - Online
> May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
>    *https://www.asipto.com/sw/kamailio-advanced-training-online/

-- 
-Barry

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