[SR-Users] Dispatcher clear dst_avp

[Daniel-Constantin Mierla]

Hello,

On 04.12.18 15:32, Grant Bagdasarian wrote:
>
> Hello,
>
>  
>
> I’m trying to use multiple destination sets which may include the same
> destination.
>
> For instance:
>
> SET ID: 1
>
> sip:10.0.0.1:5060
>
> sip:10.0.0.2:5060
>
>  
>
> SET ID: 2
>
> sip:10.0.0.1:5060
>
>  
>
> Whenever a new SIP INVITE is sent to the Kamailio instance it will use
> SET ID 1. If then for some reason this call attempt fails,
> failure_route will trigger and SET ID 2 will be used.  At first glance
> this might not make any sense, but there is some business logic behind
> this, but it’s not relevant for this case.
>
>  
>
> For some reason, the dst_avp variable still contains the destinations
> of SET ID 1 in failure_route.
>
> Is there a built-in way to reset this variable for every call to
> ds_select_domain(), such that only the destinations of passed SET ID
> will be loaded into the avp?
>
> I tried setting the avp to $null before calling ds_select_domain, but
> that had some undesirable effects.
>

If ds_next_*() returns false, then it should be no avp with a
destination address from dispatcher? Have you printed the avps and see
how amby are? Also, what where those effects?

Cheers,
Daniel


>  
>
> The reason I’m asking this is the destinations the call is being sent
> to are Freeswitch instances, which will return a 482 Request Merged
> when the same INVITE is sent to the same Freeswitch within 4 seconds
> (default T4 timer).
>
> I’m trying to match the previously selected destination in
> failure_route with the next destination and skip if they’re the same,
> or stop processing when they are the same and no more destinations are
> available.
>
> I know I can mess with the T4 timer in Freeswitch and perhaps even
> sleep in failure route to deal with the 482 failure, but I rather fix
> this in a normal way.
>
>  
>
> Regards,
>
>  
>
> Grant Bagdasarian
>
> Senior Developer
>
>  
>
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
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Kamailio Advanced Training, Nov 12-14, 2018, in Berlin -- www.asipto.com

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