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Re: [Ccrtp-devel] Send RTCP APP Packets

From: Federico Montesino Pouzols
Subject: Re: [Ccrtp-devel] Send RTCP APP Packets
Date: Mon, 15 May 2006 16:35:03 +0200
User-agent: Mutt/1.5.11+cvs20060403

Hi, currently there is no direct way to send APP packets with
ccRTP. Incoming packets can be handled using the virtual onGotAPP.

Probably the right place to add generic support for sending APP
packets would be the QueueRTCPManager::dispatchControlPacket method,
which builds compound RTCP packets (including SR, RR and SDES, but not
APP) and sends them. However these packets are built and sent
following well defined rules. These rules are not so completely
specified for APP packets, with app-specific content and timing. So I
guess you may be interested in writing an extension method similar to

How do you plan to request APP packets to be sent from your
application? Is there any timing constraint?

On Mon, May 15, 2006 at 10:53:28AM +0000, PXC wrote:
> Hi,
> I'm implementing a real time protocol based on RTP using ccRTP and I have the
> need of sending custom APP RTCP packets for control and negotiation purposes.
> Looking at the ccRTP manual I have'nt found how to do that but I tried to 
> modify
> QueueRTCPManager class in order to use the sendControl or
> sendControlToDestinations functions to send the packet but those also don't 
> work
> anyway.
> I don't know if this functionality is implemented on ccRTP, but if so, I can't
> find how to use it.
> Thanks.
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