[OpenSIPS-Users] PRACK response to 183 without SDP

[solarmon]

Hi Johan,

The first 183 packet that is received has no SDP in it and has:

Require: 100rel

I wish to prevent this from being passed on, but still respond what with a
PRACK (since 100rel has been requested). The reason for this is that our
system will not work if it first receives a 183 without SDP and then
receives a second 183 with SDP.

Thank you.

On Mon, 18 Jan 2021 at 16:13, Johan De Clercq <Johan at democon.be> wrote:

> you mean that the remote party sends you required:100rel ? The only way
> that I know is by using b2b logic.
> Maybe Bogdan can shed some light here.
>
> Op ma 18 jan. 2021 om 17:07 schreef solarmon <solarmon at one-n.co.uk>:
>
>> Hi,,
>>
>> I have a requirement to stop 183 without SDP packets from being passed,
>> as well as having to reply back with a PRACK.
>>
>> I can stop the 183 without SDP from being passed on with the following in
>> onreply_route[]
>>
>>  if ($rs == "183" && !has_body_part("application/sdp")) {
>>                 drop();
>>                 exit;
>>         }
>>
>> However, how do I reply back with a PRACK?
>>
>> Thank you.
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20210118/dcb59805/attachment.html>