On Apr 4, 2008, at 7:24 AM, Hans Erik van Elburg wrote:
> There seems to be a misunderstanding here, there is no intention for
> stacking Target headers at all. There will always have to be zero or  
> one
> target header field with one clear meaning: "current target".
>

I believe you. But like others, I found the draft unclear, and it made  
more sense if I assumed a stack of Target headers.

> As soon as a retarget (using the definition from UALR draft) occurs an
> existing target header will have to be removed, as it no longer
> represents the current target.

Then it doesn't help Charlie knows that he's answering a call meant  
for Bob when Bob forwards his phone to Charlie and Alice calls Bob.

> Params only seems to tackle the parameter loss issue, and it seems
> further to solve a different problem alltogether i.e. how to get
> parameters from the caller to the callee.

Well, that WAS the original goal of US-Loose-Route, and is the thing  
we have a chartered milestone for:

 From our charter:
Feb 2008
Delivering request-URI and parameters to UAS via proxy to IESG (PS)

> There is a risk that
> parameters that where only intended to be received by user B end up at
> user C.

Well, that can certainly happen with any header. The workaround if it  
worries you is to use a 302.

--
Dean
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