Re: [asterisk-users] Asterisk behind NAT Early Media Video

[Joshua Colp]

On Mon, Apr 9, 2018, at 1:05 PM, Benjamin Marty wrote:
> wohoo, so if I unterstand it correctly with that patch early media video
> works over the Asterisk server? In other words the Asterisk server get's
> able to (process/)forward the early media video stream with that patch?

The patch forwards video while in an early media state before the call is 
answered and bridged, yes.

-- 
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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Re: [asterisk-users] Asterisk behind NAT Early Media Video

[Benjamin Marty]

wohoo, so if I unterstand it correctly with that patch early media video
works over the Asterisk server? In other words the Asterisk server get's
able to (process/)forward the early media video stream with that patch?

2018-04-09 17:57 GMT+02:00 Joshua Colp :

> On Mon, Apr 9, 2018, at 12:04 PM, Benjamin Marty wrote:
> > My understanding based on Wireshark analysis is that the signaling works
> > (also the recipent phone is displaying the video frame before accepting
> the
> > call), also the calling phone send video (i see that also via Wireshark)
> > but the recipent phone doesn't get any video from the Asterisk before the
> > call.
>
> Ah yeah video, I forgot that it was a recent change to add support for
> it[1]. It's not yet in any release.
>
> [1] https://gerrit.asterisk.org/#/c/8398/
>
> --
> 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
>
> --
> _
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> Check out the new Asterisk community forum at: https://community.asterisk.
> org/
>
> New to Asterisk? Start here:
>   https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
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> To UNSUBSCRIBE or update options visit:
>http://lists.digium.com/mailman/listinfo/asterisk-users
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Re: [asterisk-users] Asterisk behind NAT Early Media Video

[Joshua Colp]

On Mon, Apr 9, 2018, at 12:04 PM, Benjamin Marty wrote:
> My understanding based on Wireshark analysis is that the signaling works
> (also the recipent phone is displaying the video frame before accepting the
> call), also the calling phone send video (i see that also via Wireshark)
> but the recipent phone doesn't get any video from the Asterisk before the
> call.

Ah yeah video, I forgot that it was a recent change to add support for it[1]. 
It's not yet in any release.

[1] https://gerrit.asterisk.org/#/c/8398/

-- 
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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Re: [asterisk-users] Asterisk behind NAT Early Media Video

[Benjamin Marty]

My understanding based on Wireshark analysis is that the signaling works
(also the recipent phone is displaying the video frame before accepting the
call), also the calling phone send video (i see that also via Wireshark)
but the recipent phone doesn't get any video from the Asterisk before the
call.

2018-04-09 17:02 GMT+02:00 Joshua Colp :

> On Mon, Apr 9, 2018, at 11:53 AM, Benjamin Marty wrote:
> > Yes, media is flowing through Asterisk because both client's are behind
> > different NAT's.
>
> This doesn't answer the question of what is ACTUALLY happening in the
> scenario you describe which is very important.
>
> > Do I need to do something special in the Call Flow? Or anything
> additional
> > to the pjsip.conf?
>
> The "rtp_symmetric" option as you've used causes Asterisk to send media to
> the source of media, but it requires us to receive media. If we don't
> receive it then we send media to where they've told us to send it, which as
> I've mentioned can be wrong.
>
> --
> 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
>
> --
> _
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> Check out the new Asterisk community forum at: https://community.asterisk.
> org/
>
> New to Asterisk? Start here:
>   https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>http://lists.digium.com/mailman/listinfo/asterisk-users
>
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Re: [asterisk-users] Asterisk behind NAT Early Media Video

[Joshua Colp]

On Mon, Apr 9, 2018, at 11:53 AM, Benjamin Marty wrote:
> Yes, media is flowing through Asterisk because both client's are behind
> different NAT's.

This doesn't answer the question of what is ACTUALLY happening in the scenario 
you describe which is very important.
 
> Do I need to do something special in the Call Flow? Or anything additional
> to the pjsip.conf?

The "rtp_symmetric" option as you've used causes Asterisk to send media to the 
source of media, but it requires us to receive media. If we don't receive it 
then we send media to where they've told us to send it, which as I've mentioned 
can be wrong.

-- 
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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Re: [asterisk-users] Asterisk behind NAT Early Media Video

[Benjamin Marty]

Yes, media is flowing through Asterisk because both client's are behind
different NAT's.

Do I need to do something special in the Call Flow? Or anything additional
to the pjsip.conf?

2018-04-09 16:50 GMT+02:00 Joshua Colp :

> On Mon, Apr 9, 2018, at 11:42 AM, Benjamin Marty wrote:
> > Hello,
> >
> > I have an Asterisk 15 with PJSIP behind NAT (Amazon EC2).
> >
> > Now I would like to get Early Media Video working between clients in
> > different NATed networks. The 183 signalling goes trough perfectly, but
> > asterisk doesn't forward the Early Media RTP stream from the caller to
> the
> > recipent.
>
> You would need to examine things specifically and see where media is
> flowing. Is the recipient behind NAT? If so then until we receive media
> from them (wich may or may not occur with early media) we may not have the
> correct target of media.
>
> Cheers,
>
> --
> 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
>
> --
> _
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> Check out the new Asterisk community forum at: https://community.asterisk.
> org/
>
> New to Asterisk? Start here:
>   https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>http://lists.digium.com/mailman/listinfo/asterisk-users
>
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Re: [asterisk-users] Asterisk behind NAT Early Media Video

[Joshua Colp]

On Mon, Apr 9, 2018, at 11:42 AM, Benjamin Marty wrote:
> Hello,
> 
> I have an Asterisk 15 with PJSIP behind NAT (Amazon EC2).
> 
> Now I would like to get Early Media Video working between clients in
> different NATed networks. The 183 signalling goes trough perfectly, but
> asterisk doesn't forward the Early Media RTP stream from the caller to the
> recipent.

You would need to examine things specifically and see where media is flowing. 
Is the recipient behind NAT? If so then until we receive media from them (wich 
may or may not occur with early media) we may not have the correct target of 
media.

Cheers,

-- 
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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[asterisk-users] Asterisk behind NAT Early Media Video

[Benjamin Marty]

Hello,

I have an Asterisk 15 with PJSIP behind NAT (Amazon EC2).

Now I would like to get Early Media Video working between clients in
different NATed networks. The 183 signalling goes trough perfectly, but
asterisk doesn't forward the Early Media RTP stream from the caller to the
recipent.

I have the following configuration:

[6001]
type = endpoint
context = internal
rewrite_contact = yes
direct_media = no
rtp_symmetric = yes
force_rport = yes
disallow = all
allow = alaw, ulaw, h264
aors = 6001
auth = auth6001

[6001]
type = aor
max_contacts = 2

[auth6001]
type=auth
auth_type=userpass
password=1234
username=6001

Is there a Solution for an such scenario?

Thanks

Benjamin
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