W3C home > Mailing lists > Public > public-ws-addressing@w3.org > October 2005

Re: Reference Parameters - using them

From: Conor P. Cahill <concahill@aol.com>
Date: Sat, 8 Oct 2005 08:01:23 -0400
To: "Pete Hendry" <peter.hendry@capeclear.com>
cc: "David Hull" <dmh@tibco.com>, "Marc Hadley" <Marc.Hadley@Sun.COM>, public-ws-addressing@w3.org
Message-ID: <4347B513.1040209@aol.com>

Pete Hendry wrote on 10/7/2005, 11:13 PM:

 > What I am arguing (and Marc too) is that there should be a means to have
 > the client automatically get this EPR and use it - a standard mechanism.
 > There should not have to be any code on the client to explicitely take
 > this EPR, extract the parameters and put them in the next request (if
 > that's what it is doing). One approach may be to allow the response to
 > contain a wsa:ReplyTo header also (this would also facilitate the case
 > where the logon service is the initial point of contact of a site and
 > then the client can be redirected once authenticated using the Address
 > field of the ReplyTo in the response - but that's getting a bit ahead of
 > myself!).

Well, I think there needs to be a standard way to update/replace
the EPR that the client used to invoke the service.  However, in
the case of WSN, this isn't what's happening.  The subscription
response is saying something along the lines of "Ok, if you want
to communicate further with respect to *this* subscription, you
need to use this new EPR".

That is different than saying "From now on, when you communicate
with me, you should use this new EPR".

I think that both situations are different and that the EPR for
the subscription related information is a application level
message that should be in the body and should be documented
by WSN as it doesn't change further invocations of the interface
that resulted in the subscription.

I also think it would be good to standardize a method for the
recipient of a message to send back a response that indicates
that the sender should alter the logical EPR used to invoke
the service (change the endpoint, change the reference parameters,

Received on Saturday, 8 October 2005 12:01:16 UTC

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