Petacope_AcceptVersions in WCS requests

[Bang Pham Huu]

From OGC document ​https://portal.opengeospatial.org/files/09-148r1, WCS request in XML should have a request like this

GetCapabilities
Requirement 3 /req/post-xml/getCapabilities-request-structure:
A GetCapabilities request using POST/XML shall consist of an XML document of type
wcs:GetCapabilities.
Example The following is a minimum GetCapabilities request encoded in XML:
<?xml version="1.0" encoding="UTF-8"?>
<GetCapabilities
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:ows="http://www.opengis.net/ows/1.1"
 xmlns:wcs="http://www.opengis.net/wcs/2.0"
 xsi:schemaLocation=
 "http://schemas.opengis.net/wcs/2.0 ../wcsAll.xsd"
 service="WCS">
 <ows:AcceptVersions>
     <ows:Version>2.0.0</ows:Version>
 </ows:AcceptVersions>
</GetCapabilities>

It was fixed in WCS XML Parser to accept this format, but with KVP Request it uses the request like this

service=WCS&version=2.0.1&request=GetCapabilities

As Petascope only supports WCS version 2.0.1.

However, with some checks with WCS implementation provider

MapServer: ​http://mapserver.org/de/ogc/wcs_server.html#wcs-2-0

# GetCapabilities
http://www.yourserver.com/wcs?SERVICE=WCS&ACCEPTVERSIONS=1.0.0,2.0.1
  &REQUEST=GetCapabilities
http://www.yourserver.com/wcs?SERVICE=WCS&REQUEST=GetCapabilities

and an INSPIRE guidance technical document
​http://inspire.ec.europa.eu/file/1635/download?token=7m3PXp4a

http://myserver.ac.uk/some/folders/ows?
 service=WCS&
 request=GetCapabilities&
 AcceptVersions=2.0.1, 2.0.0&

it shows that version in KVP request should be change to AcceptVersions (even Petascope only supports WCS 2.0.1) in system test, examples,…but keep the version as backward support.