[SR-Users] Drop 200OK re-transmissions of suspended transaction

[Daniel-Constantin Mierla]

Hello,

htable can be (almost) always a rescue option -- define one with
auto-expire value set to the transaction lifetime, when you know that
next responses should be dropped, then add an item in the htable with
callid as a key (eventually callid+cseq). When you get a response, check
if you have the item in htable and drop it.

Cheers,
Daniel

On 12.03.19 16:15, Marco Capetta wrote:
> Hi All,
>
> I started playing with async kamailio feature, in particular using
> "async_route" function provided by ASYNC module
> (https://www.kamailio.org/docs/modules/5.1.x/modules/async.html#async.f.async_route).
>
> My scenario is the following:
>  - A calls B
>  - B answer the call
>  - inside onreply_route[reply] I catch the 200OK message and I suspend
> the transaction for X seconds.
>  - after X seconds the transaction is resumed and the call continues
> as expected
>
> Everything looks good, but I encountered an issue trying to drop reply
> re-transmission messages.
>
> My desire is to drop all the messages received from B (basically 200OK
> re-transmissions) meanwhile the transaction is suspended.
> I tested "t_is_retr_async_reply" function provided by TM module
> (https://www.kamailio.org/docs/modules/5.1.x/modules/tm.html#tm.f.t_is_retr_async_reply),
> but I'm not able to get it worked as expected:
>  - t_is_retr_async_reply() function can be used only inside named
> 'onreply_route' (no default 'onreply_route' or standard 'reply_route')
>  - drop() function, on the contrary, doesn't allow to drop 200OK
> messages inside named 'onreply_route' (but only in default
> 'onreply_route' or standard 'reply_route').
>
> Do you have any suggestion on how I can achieve my task?
>
> Thank you very much for your support.
> Marco
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
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