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<p>Hi Edward,</p>
<p><br>
</p>
<p>They don't seem to be required on the Demo MapServer (which is <span style="color: rgb(35, 110, 37); font-family: monospace; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: pre; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline !important; float: none;">MapServer version 7.0.6)</span>:</p>
<p><a class="moz-txt-link-freetext" href="http://demo.mapserver.org/cgi-bin/wms_landsat?request=DescribeLayer&service=WMS&version=1.3.0&sld_version=1.1.0&layers=WMS_raster">http://demo.mapserver.org/cgi-bin/wms_landsat?request=DescribeLayer&service=WMS&version=1.3.0&sld_version=1.1.0&layers=WMS_raster</a></p>
<p><br>
</p>
<p>For SLD 1.1.0, looking at the spec, Table 1 and 2 both list the
"Parameters in DescribeLayer operation request". The required ones
(beyond the standard service/request/version) are:<br>
layers, sld_version</p>
<p>There are no others, either mandatory or optional.</p>
<p><br>
</p>
<p>The SLD 1.0 spec is less clear about what's going on, but when I
changed the sld_version=1.0.0, Mapserver excepted telling me only
1.1.0 is supported.<br>
</p>
<p><br>
</p>
<p>Hope that helps in some way,</p>
<p>Cheers,</p>
<p>Jonathan<br>
</p>
<br>
<div class="moz-cite-prefix">On 2018-07-02 16:35, Edward Mac
Gillavry wrote:<br>
</div>
<blockquote type="cite"
cite="mid:VI1P189MB0542037E21ACA1BF3A730651D7430@VI1P189MB0542.EURP189.PROD.OUTLOOK.COM">
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<p style="margin-top:0;margin-bottom:0">Dear list,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">We're currently
investigating an error message we get from the WMS service
<font size="2"><span style="font-size:11pt;">when we execute a
DescribeLayer request. It appears MapServer requires WIDTH
and HEIGHT parameters to be present:</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;"><br>
</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;"><a
href="https://github.com/mapserver/mapserver/blob/branch-7-0/mapwms.c#L1705"
class="OWAAutoLink" id="LPlnk214898"
previewremoved="true" moz-do-not-send="true">https://github.com/mapserver/mapserver/blob/branch-7-0/mapwms.c#L1705</a><a
href="https://github.com/mapserver/mapserver/blob/branch-7-0/mapwms.c#L1705"
class="OWAAutoLink" id="LPlnk214898"
previewremoved="true" moz-do-not-send="true"><br>
</a><br>
</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;">However, according to the SLD
specs, these are NOT required:</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;"><br>
</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;"><a
href="http://portal.opengeospatial.org/files/?artifact_id=22364"
class="OWAAutoLink" id="LPlnk236007"
previewremoved="true" moz-do-not-send="true">http://portal.opengeospatial.org/files/?artifact_id=22364</a><br>
</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;"><br>
</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;">Am I interpreting the code or SLD
spec incorrectly? Or should I go ahead and remove these
checks and provide a PR?</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;"><br>
</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;">Many thanks,</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;"><br>
</span></font></p>
<p style="margin-top:0;margin-bottom:0"><font size="2"><span
style="font-size:11pt;">Edward</span></font></p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
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