Juha Heinanen wrote:
> Dean Willis writes:
> 
>  > Most clients are configurable with AOR, default proxy, username, and
>  > password. If they aren't configurable with this, they're broken, they've
>  > always been broken, and you need new ones. Even web browsers can be
>  > configured to use a proxy that is not related to the user's AOR.
> 
> yes, clients are configurable, but if sip is trying to compete with
> spype, xmpp, etc., configuration required by user must be minimal,
> nothing in addition to aor, username and password.  all the rest must be
> automatically learned from the network.
> 
> looks like you have lost totally touch of the real world, if you think
> that it is feasible to ask users to manually configure outbound proxies.

My former employers shipped something like 50 million "configurable" SIP
devices to the real world, and email and http clients require comparable
configuration.

I also know that at many places one has to manually configure something
like a SOCKs proxy to make XMPP work.

The human-controlled policies around network operations require systems
to act in more complex ways than protocols can optimally support. This
isn't the protocol's fault.

--
Dean


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