On Thu, Feb 7, 2013 at 4:11 PM, Jonathan Moules <
[email protected]> wrote:
> Another spec that does odd things. :-)
>
> Looking at the specs, WMS 1.1.0 doesn't appear to have an opinion on
> duplicate parameters:
>
> *Parameters in a request may be specified in any order. *
> *
> *
> *An OGC Web Service shall be prepared to encounter parameters that are
> not part of this *
> *specification. In terms of producing results per this specification, an
> OGC Web Service *
> *shall not require such parameters. *
>
>
>
> But WMS 1.3.0 is clearer:
>
> *When request parameters are duplicated with conflicting values, the
> response from the server may be undefined. *
> *This International Standard does not mandate which of the duplicated
> values sent by the client are to be used by *
> *the server. *
>
>
> However, these aren't conflicting values, they're identical values. Also,
> the second line strongly implies (to me anyway), that the WMS should still
> work with duplicate values, otherwise why specify that the server gets to
> choose which of the parameters to use? And that the server can perform
> "undefined" behaviour if they're conflicting?
>
If the response is undefined the server can do whatever it wants, including
sending back an exception.
However GeoServer by tradition tries to to be backrwards incompatible, so
apps that used to work against
version 2.2.x should keep on working in 2.3.x
I'm afraid the fix won't be simple though...
Cheers
Andrea
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