In a previous episode Ian Cooper said...
:: > In both cases it is
:: >possible (I assume this is true for a WPAD-enabled browser?) to determine
:: >the use of a proxy if one takes the trouble.
::
:: True, and it's also possible to detect the presence of a proxy with a
:: traffic intercepting environment.
::
but the difference lies in if the client is able to do anything about
it.. in the case of a proxy returning a 501 error for a method
extension (say from WEBDAV or something still to come).. an
autoconfigured browser would have some options: bypass the proxy
entirely, use a different (but normally less preferred) proxy,
etc.. while the one in the traffic intercepting environment is just
plain stuck and is fully at the mercy of the algorithms in the transparent proxy.
[someone that I've lost track of, not Ian, said]
:: > In summary I'm not convinced
:: >that auto-discovery introduces "transparency".
::
I'd concur strongly with that.
-P
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