Hi, Ryan!

That error is actually triggered by opensips, rtpengine module. There was a bug related to this issue that was fixed on 21st of February, and did not catch the 2.3.3 release. The latest 2.3 nightly has this fixed, so I'd suggest you to use that opensips version.

Best regards,
Răzvan

On 04/13/2018 04:31 PM, Esty, Ryan wrote:
Razvan,

Rtpengine is printing out this: rtpengine:parse_flags: error processing flag 
`codec-strip-VP8': unknown error. As I look at it now I don't see how it could 
be your issue. You aren't modifying the flag I sent to rtpengine. If it helps 
my version of opensips is 2.3.3.

Ryan


-----Original Message-----
From: Users [mailto:users-boun...@lists.opensips.org] On Behalf Of Razvan 
Crainea
Sent: Friday, April 13, 2018 9:17 AM
To: users@lists.opensips.org
Subject: Re: [OpenSIPS-Users] codec stripping with rtpengine

Hi, Ryan!

I think the issue you are talking about is related to OpenSIPS, rather than 
rtpengine, since you are getting the error in OpenSIPS, is that right?

Can you confirm what version of OpenSIPS you are using?

Best regards,
Răzvan

On 04/13/2018 03:42 PM, Esty, Ryan wrote:
Bogdan-Andrei,

Thanks for the information just in case someone else looks for this,
this is the tracker https://github.com/sipwise/rtpengine/issues/525.

Ryan

*From:*Bogdan-Andrei Iancu [mailto:bog...@opensips.org]
*Sent:* Thursday, April 12, 2018 4:08 PM
*To:* OpenSIPS users mailling list <users@lists.opensips.org>; Esty,
Ryan <ryan.e...@necect.com>
*Subject:* Re: [OpenSIPS-Users] codec stripping with rtpengine

Hi Ryan,

yeah, this happens because OpenSIPS applies all the changes at the
end, when the message is about to be sent out. As a side effect, when
sending the SDP to rtpengine, opensips does not see its own previous
changes over the body (changes are still pending).
Usually there are easy workarounds for this, but in this case it looks
like bug to me. Could you please open a bug report the the github tracker.

Best regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer

    http://www.opensips-solutions.com

OpenSIPS Summit 2018

    http://www.opensips.org/events/Summit-2018Amsterdam

On 04/09/2018 05:22 PM, Esty, Ryan wrote:

     Hi opensips list,

     First some background I’m trying to use opensips as a webrtc proxy.
     I found out that the packets for the invite going to my sip server
     are too big for my sip server. It doesn’t like packets to be over
     4000 bytes. I’m trying to take what I can out of the sip packets
     like codes I know the other side can’t do. First codec stripping
     works but only with the audio codecs. If I try to strip a video
     codec the packet gets mangled. This is probably a bug in rtpengine
     and not opensips. I was hoping if anyone has any idea how I might
     get my invite packets smaller? The webrtc side is generating ssrc
     lines in my sdp. I’m trying to strip them out but I’m not sure if
     rtpengine is putting them back in or not. Before my rtpengine_offer
     I do a replace_body_all(“a=ssrc.*\r\n,” “”) but the invite still has
     all the ssrc lines in it.

     Ryan




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--
Răzvan Crainea
OpenSIPS Core Developer
    http://www.opensips-solutions.com
OpenSIPS Summit 2018
    http://www.opensips.org/events/Summit-2018Amsterdam

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--
Răzvan Crainea
OpenSIPS Core Developer
  http://www.opensips-solutions.com
OpenSIPS Summit 2018
  http://www.opensips.org/events/Summit-2018Amsterdam

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