Re: XML Schema versioning in 4310bis

> Ulrich Wisser <[email protected]> wrote on 26/01/2010 08:01:47:
> Re: [ietf-provreg] XML Schema versioning in 4310bis
>
> in this case I have to agree with James. We discussed changing the URI
> and came to the conclusion that changing the URI will break old clients
> without any need to do so.
>
> But let's have a look on the alternatives:
>
> 1. Server supports only the "old" 1.0
>     - no changes on client or server
> 2. Server supports only the "new" 1.0
>     - only changes on the server side needed
> 3. Server supports both
>     - only changes on the server side needed

That's OK for the server, but thinking about it from the client's point of
view:  How does a client know whether it should use the "old" or "new"
format?
Having the server advertise the protocol version in the <hello> makes it
possible to write a client that can handle both.


Anthony Kirby

--
Nominet UK - http://www.nominet.org.uk

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