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RE: Has the semantics for Modules changed?

From: Henrik Frystyk Nielsen <frystyk@microsoft.com>
Date: Sun, 18 Mar 2001 14:43:13 -0800
To: "'Mark Nottingham'" <mnot@akamai.com>
Cc: "Jean-Jacques Moreau" <moreau@crf.canon.fr>, "Williams Stuart" <skw@hplb.hpl.hp.com>, <xml-dist-app@w3.org>
Message-ID: <79107D208BA38C45A4E45F62673A434D0297CA65@red-msg-07.redmond.corp.microsoft.com>

>This brings another question to mind - will there ever be a 
>case where a block is targeted at a node in the request, the 
>node processes the block during the request, and the response 
>also needs processing by the node, without targeting?
>
>I can imagine that your challenge/credentials module would be 
>targeted in both directions. Would there ever be a case where 
>the response would be implicitly targeted, based on its 
>correlation with the request?

I think so. The reason is that there is only one "from" (i.e. a party
responsible for a message) and that party is located at the initial
sender. The initial sender may outsource processing to other nodes in
the message path but that doesn't change the party responsible for the
message in the first place.

In other words, each block doesn't have an individual "from" associated
with it and when a receiver receives a message it always looks like a
single message with a single "from". Any party in the path can of course
send additional messages, which allows these parties to be associated
with the "from" for the messages they generate.

Henrik
Received on Sunday, 18 March 2001 17:43:50 GMT

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