Hi Jean Jacques, > -----Original Message----- > From: Jean-Jacques Moreau [mailto:moreau@crf.canon.fr] > Sent: 20 March 2001 12:16 > To: frystyk@microsoft.com > Cc: 'Mark Nottingham'; Williams Stuart; xml-dist-app@w3.org > Subject: Re: Has the semantics for Modules changed? > > > Henrik Frystyk Nielsen wrote: > > > >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. > > Allowing multiple parties (handlers, intermediaries) to add blocks to a > request is like allowing multiple conversations to be carried out on the > same channel. In such a multi-speaker context, doesn't it matter to be able > to identify individual speakers (this is probably implied by Fig. 2.1@AM)? > If so, shouldn't we explicitely tag individual blocks with a "from" > attribute? I think that there may be value in being able to 'tag' blocks with something that identifies their originator, however, I don't think that "Fig 2.1@AM" implies that. > Jean-Jacques. StuartReceived on Tuesday, 20 March 2001 07:45:57 UTC
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