Re: Kamailio change rtpengine in mid-cal

I see you make rtpengine node failover.
I have not tested failover + reinvite.
I think current behaviour need to be documented on rtpengine github ticket.

Sergey

On Wed, Apr 29, 2026 at 8:49 AM Sergey Safarov <[email protected]> wrote:

> Please check
> https://github.com/sipwise/rtpengine/issues/1241
>
> It looks like this works as expected on
> dbf79cb76274b182f4fb1be10ea894d46b9ba818
> <https://github.com/dvillaume/rtpengine/commit/dbf79cb76274b182f4fb1be10ea894d46b9ba818>
> commit.
> You can try make git bisect to find commit where this functionally is
> broke.
> Then you can report the ticket and wait when it will be fixed.
>
> Sergey
>
> On Wed, Apr 29, 2026 at 8:39 AM Myng via sr-users <
> [email protected]> wrote:
>
>> I am encountering an issue regarding how Kamailio handles rtpengine node
>> failures mid-call, and I would like to clarify the expected behavior.
>>
>> *The Scenario:* I have a setup with multiple rtpengines (e.g., 4 nodes)
>> all configured in the same pool with setid=0.
>>
>>    1.
>>
>>    An initial INVITE arrives, and Kamailio successfully selects
>>    *rtpengine-A* for the call.
>>    2.
>>
>>    Later in the dialog, a re-INVITE occurs.
>>    3.
>>
>>    Coincidentally, *rtpengine-A* is unavailable at that exact moment.
>>    4.
>>
>>    Kamailio then automatically switches to a different rtpengine node in
>>    the set.
>>
>> *The Question:* Based on my reading of an older issue (#2713
>> <https://github.com/kamailio/kamailio/issues/2713>), my understanding
>> was that Kamailio should *not* change the rtpengine node mid-call, as a
>> new node will not have the media state for the ongoing session.
>>
>> Could you please confirm if my understanding is correct, or if Kamailio’s
>> default failover behavior for mid-call transactions has changed recently?
>>
>>
>> Thank you for your time and insights!
>>
>>
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