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Re: Gateways

From: Mark Baker <distobj@acm.org>
Date: Tue, 8 Oct 2002 14:09:15 -0400
To: Ugo Corda <UCorda@SeeBeyond.com>
Cc: www-ws-arch@w3.org
Message-ID: <20021008140915.A648@www.markbaker.ca>

On Tue, Oct 08, 2002 at 10:41:49AM -0700, Ugo Corda wrote:
> >> Yes, and taking that at the SOAP level, a SOAP node could receive SOAP
> >> messages traveling over HTTP and forward them to another SOAP node over
> >> SMTP. Is that still a gateway?
> >
> >If it terminates the message, yes, I'd say so.
> Well, I can probably look at it either way. The first SOAP message
> terminates and a new SOAP message is generated to go to the next node. Or
> it's the same SOAP message, just going through an intermediary.

I think the best way to look at it, is that it may be the same sequence
of bytes (or not), but it's definitely a new message.

Ok, so to take Mike's cue, it sounds like we're probably agreeing, and
I don't hear other people chiming in, so how about this for the

Gateway; a node that terminates a message on an inbound interface with
the intent of presenting it through an outbound interface as a new
message.  Due to possible mismatches between the inbound and outbound
interfaces, a message may have some or all of its meaning lost during
the conversion process.  Note; gateways may or may not be SOAP nodes,
and gateways that are SOAP nodes are not SOAP intermediaries.

> P.S. All this reminds me of the particle/wave duality in quantum mechanics,
> where it is one or the other depending on how you look at it  :-).

Yep. 8-)

Mark Baker, CTO, Idokorro Mobile (formerly Planetfred)
Ottawa, Ontario, CANADA.               distobj@acm.org
http://www.markbaker.ca        http://www.idokorro.com
Received on Tuesday, 8 October 2002 14:08:13 UTC

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