[jdev] Re: XMPP Ping method?

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


Hello,

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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