[JDEV] UDP vs TCP

[mark at mjwilcox.com]

On 1 Sep 00, at 6:52, ltherond at elitehill.com -- pop account wrote:

> 
> ----- Original Message -----
> From: <mark at mjwilcox.com>
> To: <jdev at jabber.org>
> Sent: Friday, September 01, 2000 6:32 AM
> Subject: Re: [JDEV] UDP vs TCP
> 
> 
> > The basic message is still valid. TCP, at least at the moment, is
> > still the better choice for implementing Jabber because TCP will
> > give us good enough performance, with a lot less work and we'll
> > worry about massive scaling later.
> 
> I disagree. TCP makes poor use of today's networks.
> How many times do you think a message should get onto the wire?
> n times through n TCP connections, or once via a broadcast/multicast?
> 
But most networks aren't ready for this, at least not without being 
hammered. We've seen this at work (a very large univeristy), as 
we've been getting ready for streaming video. 

By default nearly all NICs are set to broadcast and if you're on a 
hub, half the traffic is just this broadcast 'ping'. 

If you're on a switched network, it's ok, but I just think this a false 
assumption.

Don't get me wrong, I think that we should be looking to a better 
solution, but I think that the default should be TCP. As Thomas has 
pointed out, you can write your own protocol plugin to give you 
multiple options.

Mark
Mark Wilcox
mark at mjwilcox.com
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