Proposal (Was: When are and aren't two URLs the same?)

[Jonathan Daugherty]

# Now the argument can be made that this trivial transformation --
# dropping redundant port 80 -- should be made by the identity host,
# but unless we all agree what are and aren't allowed, encouraged, ..
# transformations, that way lies interoperability hell.

I don't see how this leads to interoperability problems.  If identity
providers implement redirects to canonicalize URLs, then the
"interoperability" problem goes away because a relying party will
presumably follow those redirects.  Am I missing something?  Can you
contrive a case where this doesn't work?

-- 
  Jonathan Daugherty
  JanRain, Inc.