[Freeswitch-users] Issue with ReInvite after a=inactive

[Pirmin Walthert]

I don't think that there is much missing. I will have to simulate this 
behavior somehow in a lab as I can't turn on full logs on this system 
(it is a life system under heavy load). The only thing I could provide 
is sip traces that show the mentioned behavior. The dial process is 
quite simple: the B leg is called with a simple "<action 
application="bridge" 
data="{sip_invite_domain=${invite_domain};user=phone}sofia/gateway_name/xy at z;user=phone"/>

However I was able to influence the behavior with adding the following 
setting (which wasn't set before):

<param name="inbound-late-negotiation" value="true"/>

now the a=inactive information isn't forwarded anymore to A (this way A 
still doesn't know about the ReINVITE, but it doesn't need to care 
anymore about it anyway as it is not in a wrong hold state anymore)

to mention: <param name="renegotiate-codec-on-reinvite" value="true"/> 
didn't have any influence

So the above (inbound-late-negotiation) fixes the issue for me, however 
I still guess that the a=sendrecv information should be forwarded when 
a=inactive is forwarded in the first place.

On 14.07.21 00:36, Brian West wrote:
> We're not a proxy would be one reason why, Something is missing in 
> your description it seems.  Happen to have the debug logs you can post?
>
> On Tue, Jul 13, 2021 at 9:29 AM Pirmin Walthert <pirmin at walthert.net 
> <mailto:pirmin at walthert.net>> wrote:
>
>     Hi there
>
>     I have the following issue:
>
>     A calls B over FreeSWITCH
>     B sends 180 Ringing without SDP (forwarded by FreeSWITCH to A
>     correctly)
>     B answers the call with 200 OK but with a=inactive (forwarded by
>     FreeSWITCH to A correctly)
>     B sends a ReInvite about 100ms after the 200 OK, but this time with
>     a=sendrecv
>     => while FreeSWITCH is answering with 200 OK and negotiating the
>     codec,
>     it is not sending any information about this event to A. Means: for A
>     media is still in inactive state
>
>     Any idea what the reason for this behavior could be or how to
>     influence it?
>
>     I am using version 1.10.6 on debian 10.8
>     (1.10.6-release-18-1ff9d0a60e~64bit)
>
>     Best regards,
>
>     Pirmin
>
>
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