History-Info and retargeting

Dale.Worleycomcast.net writes:

 > To find the target name, the recipient reads up the
stack of
 > History-Info elements starting at the current element
until it finds
 > an element tagged with 'target'.  Note that for this
to work, the
 > elements need to be traversable in "address
translation" order rather
 > than "forking" order; something like the
'redir' field-parameter needs
 > to be implemented.

this sounds very complicated to me.  it is unlikely that sip
ua vendors
would ever implement such algorithms.  same for proxies if
they would
first need to process such things in order to be able to add
new
components.

-- juha
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