[OpenSIPS-Users] Convert 183 to 180?

[Ben Newlin]

You are trying to change a reply because the 183 response is a reply to the INVITE. It is not the final reply, but it is still a reply. In fact, the change_reply_status  function explicitly does not allow you to change final replies, only provisional replies like 1xx.

You need to use an onreply_route [1], either the global one or a transaction one using t_on_reply [2], and the in that reply route you will check if the response is 183 (t_check_status [3]) and if it is use change_reply_status to change it to a 180.

[1] https://www.opensips.org/Documentation/Script-Routes-2-4#toc4
[2] https://opensips.org/html/docs/modules/2.4.x/tm.html#func_t_on_reply
[3] https://opensips.org/html/docs/modules/2.4.x/tm.html#func_t_check_status


Ben Newlin

From: Users <users-bounces at lists.opensips.org> on behalf of David Villasmil <david.villasmil.work at gmail.com>
Reply-To: OpenSIPS users mailling list <users at lists.opensips.org>
Date: Wednesday, October 9, 2019 at 5:42 AM
To: OpenSIPS users mailling list <users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] Convert 183 to 180?

That’s exactly what it does. You might want to check for the absence of sdp with


if(has_body("application/sdp"))

On Wed, 9 Oct 2019 at 10:03, solarmon <solarmon at one-n.co.uk<mailto:solarmon at one-n.co.uk>> wrote:
Hi,

Had a quick look at the change_reply_status() function and I'm a bit unsure as it suitability for what I am wanting to do.

Our setup has opensips sitting between our system and a SIP provider. The 183 is coming from SIP provider and I would like to convert this to 180 before passing it on to our system.

The documentation for change_reply_status() suggest it is used to "Intercept a SIP reply". I am not looking to change a 'reply' to the SIP provider, or to our system. I want to convert the 183 message from the SIP provider and pass it on as 180 to our system.

Will this  change_reply_status() function allow us to do that?

On Mon, 7 Oct 2019 at 14:23, solarmon <solarmon at one-n.co.uk<mailto:solarmon at one-n.co.uk>> wrote:
Hi,

Thanks. I forgot to say that I'm using openSIPS 2.4.x, but the same function is available for it too:

https://opensips.org/html/docs/modules/2.4.x/sipmsgops.html#change_reply_status<https://opensips.org/html/docs/modules/2.4.x/sipmsgops.html#change_reply_status>

Thanks for the tip!


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On Mon, 7 Oct 2019 at 14:00, Ben Newlin <Ben.Newlin at genesys.com<mailto:Ben.Newlin at genesys.com>> wrote:
I think you are looking for this: https://opensips.org/html/docs/modules/3.0.x/sipmsgops.html#change_reply_status<https://opensips.org/html/docs/modules/3.0.x/sipmsgops.html#change_reply_status>

Ben Newlin

From: Users <users-bounces at lists.opensips.org<mailto:users-bounces at lists.opensips.org>> on behalf of solarmon <solarmon at one-n.co.uk<mailto:solarmon at one-n.co.uk>>
Reply-To: OpenSIPS users mailling list <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Date: Monday, October 7, 2019 at 5:15 AM
To: OpenSIPS users mailling list <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Subject: [OpenSIPS-Users] Convert 183 to 180?

Hi,

Our system connected to openSIPS is not handling 183 (with and without SDP) very well and is non-trivial for us to try to change the behavior. If we receive an initial 183 without SDP, it does not processed a subsequent 183 with SDP.

We would like to explore how 183 (with and without SDP) can be converted to 180 (with and without SDP) see if this can resolve our issues. Can this be achieved and are there any examples of how this could be done?

Thank you in advance for any help.

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