Re: [tae] [tsv-area] Transport negotiation

james woodyatt wrote:
...
> But is it a good idea to do it this way?  It doesn't seem likely when I
> think about it.  Why not just define a single layer that unifies all the
> various E2E tools in one conceptual model?  (I'm now remembering an
> esoteric transport protocol called XTP that purported to attempt this. 
> <sardonic>I wonder whatever happened to it.</sardonic>)

TP++ as well, FWIW. There's a difference between trying to unify the
functions of the layers (as with XTP and TP++) and declaring that this
means only a single layer is sufficient. RNA argues (and Day's book also
suggests) that the layering itself provides utility in limiting scope,
and in abstracting services for layers above (and from layers below).

Joe
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