Re: [Ekiga-devel-list] DCCP

["Dr. Christian Hoene" <hoene uni-tuebingen de>]

Hello Eugen Dedu,

yes I think that will be way VoIP will evolved. It not a question  
whether but when.

As we are planing this implementation for a research project, we need  
to be a bit ahead of the line.

Lets work together on this issues? I am actually not sure where to add it ;-)

With best regards

 Christian



> Hi,
>
> DCCP is a new transport protocol, like TCP and UDP, RFC 4340.  For
> ekiga, as a streaming video application, it should be better from
> several points of view:
> - it has congestion control, unlike UDP
> - the packet retransmission is not mandatory, as TCP
> - it has acks from receiver to sender
> - two congestion controls are standard, TCP-like (like TCP :o)), and
> TFRC, which seems better for streaming, since it has a less sharp
> sending curve (reduced jitter) than TCP
>
> See http://en.wikipedia.org/wiki/DCCP for more info.
>
> DCCP is in vanilla linux kernel since about 2 years.  Windows does not
> have it.
>
> Do you think useful to port ekiga transfers to this protocol too?  In
> fact, several applications already support it, like development vlc and
> (development?) gstreamer.  It will probably be the first messenger with
> DCCP :o)  And it is not too difficult, I have worked on this, I have
> examples etc.
>
> --
> Eugen
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