[OpenSIPS-Users] PRACK response to 183 without SDP

[Tomi Hakkarainen]

Hi,

I guess does not answer the guestion but take a look at this:

https://github.com/OpenSIPS/opensips/issues/2076

that said could you setup b2b logic to fix interworking issues?

Tomi

On 18. Jan 2021, at 18.31, solarmon <solarmon at one-n.co.uk> wrote:


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.
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