The current behaviour is that Earlymedia video isn't working when NAT's in
between are involved. The source/destination IP's are correct. So the
client is sending Early media video + Early media audio to the Asterisk
Server "in the cloud" and the Asterisk Server "in the cloud" is sending
both to the IP where the Client is located. But strangely just the Early
media audio is passing the NAT to the recipent.

My guess is that the NAT traversal for Early media audio is fine, but the
one for Early media video not yet. Can you propably comprehend something in
that direction? Or can you guide me to the code part where Asterisk is
doing the Port change when a NAT is detected and the Client itself is
sending "fake" RTP Early media traffic to get a NAT Binding for incoming
RTP Early media traffic?

Benjamin

2018-04-11 11:50 GMT+02:00 Joshua Colp <jc...@digium.com>:

> On Wed, Apr 11, 2018, at 4:33 AM, Benjamin Marty wrote:
> > I added the bind_rtp_to_media_address=yes on all endpoints but still the
> > same behaviour. The funny thing is that the G711 audio early media works
> > and doesn't have that Private IP issue. I was also able to cross check
> with
> > chan_sip on Asterisk 15, exactly the same wrong behaviour. See following
> > capture (PJSIP):
>
> As I stated previously in order for media to go to the source IP address
> and port, media has to be received from the endpoint. If this doesn't
> happen then you'll see exactly this behavior - we'll send to the IP address
> and port they told us. There's nothing that Asterisk itself can do in that
> instance, the endpoint has to send media or place the correct IP address
> and port in the messages.
>
> Was any media received from it?
>
> --
> Joshua Colp
> Digium, Inc. | Senior Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US
> Check us out at: www.digium.com & www.asterisk.org
>
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