[jdev] Re: XMPP Ping method?

Michal 'vorner' Vaner michal.vaner at kdemail.net
Sat Nov 4 03:43:30 CST 2006


On Sat, Nov 04, 2006 at 09:26:40AM +0000, Dave Cridland wrote:
> On Fri Nov  3 22:48:32 2006, Tobias Markmann wrote:
> >I didn't know SCTP since you've mentioned it and have some 
> >questions:
> >
> >  1. Is SCTP TCP compatible? When a server provides SCTP protocol on
> >  port 5222 for example normal TCP clients can still connect?
> Nope. Or yes. It depends on what you're asking for. "port 5222" is 
> transport-protocol specific, so SCTP, TCP, and UDP can all co-exist 
> on that port, but the server needs to listen to those ports 
> independently.
> SCTP is also message based, which means it can cope with stanza ACKs 
> by using one message per N stanzas, but on the other hand it means 
> it's very different to TCP.

Well, I more thought using one message per stanza, so you do not have to
think about where one starts and another ends. It could help the client
to apply DOM-parsing on each stanza separately.

Maybe even the multi-streaming capability could be nice.

> I don't think it's a solution, as such, and the multi-homing/mobility 
> capabilities that have been mentioned exist in several forms at the 
> IP layer, such as MIP6, and perhaps most interestingly HIP.

You can fool some of the people all of the time,
and all of the people some of the time,
but you can make a fool of yourself anytime.

Michal "vorner" Vaner
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