[dcc2] UDP Nat2Nat Traversal

[Jeremy Iverson]

Hi Trent,

I think you're referring to actually transferring files using UDP? If
so, I think it might be a lot more hassle than it's worth. In addition
to handling ACKs, you also need to handle packet ordering; just
because one UDP packet is sent before another doesn't mean the packets
are going to arrive on the other end in that order. Basically we would
have to re-invent TCP (transmission control...), but luckily that has
already been taken care of :).

Cheers,

Jeremy
Algenta Technologies


-----Original Message-----
From: dcc2-bounces at dcc2.org [mailto:dcc2-bounces at dcc2.org] On Behalf
Of Trent Lloyd
Sent: Monday, April 26, 2004 5:23 AM
To: dcc2 at dcc2.org
Subject: [dcc2] UDP Nat2Nat Traversal

Hi Guys,

I wonder if you should consider a UDP implementation in DCC2 that will
allow people behind NAT/Firewall/Routers to still connect to each
other.

It will need a little more love than a TCP connection obviously
(because you need to handle the ACKs etc) but I don't see why you
can't do something similar to TFTP.

With many people having DSL/Cable routers these days, unconfigured
port forwarding is often a problem, as well as those behind NAT at
home, work, school, etc.

Just wondering if it had been covered, and if it's worth my wild
writing it up in detail....

Cheers,
Trent
Bur.st

--
Trent Lloyd <lathiat at bur.st>
Bur.st Networking Inc.

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