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Subject: RE: [xri] Returning a complete XRDS in proxy resolution
Hi Gabe, I remember very vaguely discussions about
that. What you said makes sense, and I agree that the proxy output should
include the GCS XRD in its output. There are a few issues though:
I’m not sure if it would be a
trivial change in OpenXRI yet; we’ll need to see what changes are made to
the spec. From: Wachob, Gabe
[mailto:gwachob@visa.com] I have been playing with the openxri 1.0.0 proxy code and
noticed that when I request a full XRDS document back, the first XRD inside
does NOT correlate to the GCS character (e.g. "@"), but rather to the
first subsegment after the GCS. In an earlier draft of our specs, we explicitly
addressed this issue and the only sensical thing to do was to include the XRD
for the GCS authority (but only when doing proxy resolution - this is one of
the main differences with lookahead/recursive resolution). The openxri proxy seems NOT to return an XRD for the GCS
authority and this seems broken to me. I can't find in the resolution text
where this is spelled out so I understand why it was implemented this way.
However, I think an XRDS returned from proxy resolution MUST include the GCS
authority XRD so a client knows exactly which GCS authority is the root
(even if not doing trusted resolution). I'm assuming this is a fairly trivial change
to the openxri proxy code. I strongly suggest we add this language explicilty in 7.6
(in addition to referring to the requirements of 4.2) for when a client is
using XRI proxy resolvers. In addition, I think we should add this requirement
for section 6 (trusted resolution). While a client doing trusted resolution
verification already has to know about roots it trusts (and therefore can do
correlation with the root authority and the first non-root-authority XRD), I
think explicitness and parallelism to the non-trusted mode are important. -Gabe
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