[e2e] Lost Layer?

[Detlef Bosau]

However, don't you agree that the basic system model in a TCP connection
is sill

Endpoint 1          -------------------- Pipe
--------------------------             Endpoint 2

?

We can well discuss the nature of the "Pipe", particularly the
correspondence CWND = Pipe's capacity.

(As you may see: I well put the end 2 end principle in question.....,
however I think this is acceptable.
@DPR: IIRC, you said yourself: Science is about asking questions and
finding answers.)