[SR-Users] Drop calls with response 200 without previous 180/183 reponses

[David Villasmil]

Kamailio is so cool, you could even do it without the dialog module. You
could simply use a hash table (htable module) and when/if a 183/180 is
received store the callid in the table (with an expiration). Anytime a 200
is received check the table (it’s in memory, so really fast), if not found,
reject.
Super simple.


On Sat, 3 Oct 2020 at 13:51, Valentin Christoph <
Christoph.Valentin at kontron.com> wrote:

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> I am not quite sure, but I would try to store a long-term flag with the
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> [...]The dialog module provides dialog awareness for the Kamailio proxy.
> It's functionality is to keep track of the current dialogs, to offer
> information about them (e.g. how many dialogs are active), and to manage
> various characteristics of dialogs. The module
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> exports several functions that can be used directly from the configuration
> route script as well as functions for the RPC interface. [...]
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> [...]10.6. $dlg_var(key)
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> This is a read/write variable that can be used to store custom values
> assigned with a dialog (e.g. the URI of a billing-server, an assigned
> emergency-server). This pseudo-variable will be available only for
> subsequential requests after doing loose_route().
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> Note: You will receive "NULL", if there is no dialog for this request.[...]
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> Hint: ACK is a subsequential request
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> Anyway, I am wondering if your approach would be compliant to RFC 3261.
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> KR
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> ------------------------------
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> *Von:* sr-users <sr-users-bounces at lists.kamailio.org> im Auftrag von
> Valter Nogueira <valter at fastway.com.br>
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> *Gesendet:* Freitag, 2. Oktober 2020 17:01
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> *An:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
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> *Betreff:* [SR-Users] Drop calls with response 200 without previous
> 180/183 reponses
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> I would like to use Kamailio to drop every call that is answered with no
> previous 180 / 183 responses or with 180 / 183 responses with no media
> attached (no SDP?).
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> Is it possible? How could I accomplish this?
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> Thanks,
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> Valter
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> _______________________________________________
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> Kamailio (SER) - Users Mailing List
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> sr-users at lists.kamailio.org
>
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
> --
Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337
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