On Fri, Jan 21, 2011 at 12:51 AM, Alex Pankratov <[email protected]> wrote:
>
>> What if you need super-high success rates for direct connectivity
>> (+95%)?
>
> In my experience one cannot achieve these rates with client-driven
> traversal, there's gotta be a coordinating third party.

Not a problem, right? Even in a purely edge-based deployment, some
fraction of the nodes are going to be able to play the role of
coordinator.


> I meant that providing
> reliability over UDP tunnels (or lossy behaviour over TCP ones)
> is a subject that is not directly related to the "NAT traversal
> state of the art". NAT traversal domain ends when you have two
> peers talking to each other in some form or fashion. Adapting
> this form to the needs of the application is a separate issue.

Understood, these are separate issues. I brought them up together
because as far as I can tell from the literature and reported results,
TCP traversal success rates are much lower than for UDP, so if you
have a real requirement for reducing relaying as much as possible, you
are going to need to use UDP and deal with the consequences. I thought
it would be useful to discuss the two topics together.

Cheers,
Alen
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