[OpenSIPS-Users] Strange Nat issue

Andrew Colin andrew.colin at ipcortex.co.uk
Wed Nov 29 15:27:31 UTC 2023

Hi Bogdan,

Seems to be in the context of the ACK yes.
Why would I be seeing proto 5 if we are using WSS then?

Kind Regards

From: Bogdan-Andrei Iancu <bogdan at opensips.org>
Date: Wednesday, 29 November 2023 at 15:17
To: users at lists.opensips.org <users at lists.opensips.org>, Andrew Colin <andrew.colin at ipcortex.co.uk>
Subject: Re: [OpenSIPS-Users] Strange Nat issue
Hi Andrew,

Proto 5 is WS (not WSS). Can you confirm if the error occurs in the context of the ACK ?


Bogdan-Andrei Iancu

OpenSIPS Founder and Developer


On 29.11.2023 15:15, Andrew Colin via Users wrote:
Hi All,

Recently deployed opensips into AWS and when we make calls between 2 webrtc clients I keep seeing this error in the logs and the call eventually drops after 32 seconds

ERROR:tm:update_uac_dst: failed to fwd to af 2, proto 5  (no corresponding listening socket)
ERROR:tm:t_forward_nonack: failure to add branches

Normal SIP to SIP calls do not have the issue


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