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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">We found on issue when updating MapCache to version 1.6 from some ancient version.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We have png-format configured to 8-bit by limiting the number of colors like<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><format name="mypng" type="PNG"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <compression>fast</compression><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <colors>256</colors><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"></format><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Now the WMS service is advertising this format with mime type “image/png; mode=8bit”. However, we have existing applications which make GetMaps with plain “&FORMAT=image/png” and that used to work with the old MapCache
version.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Is there a way to override the mime type with the MapCache config file? I can see a promising section in the RFC 119
<a href="http://mapserver.gis.umn.edu/development/rfc/ms-rfc-119.html">http://mapserver.gis.umn.edu/development/rfc/ms-rfc-119.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><format name="MVT" type="RAW"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <extension>mvt</extension><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <mime_type>application/vnd.mapbox-vector-tile</mime_type><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"></format><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, it is not clear from the documentation if mime_type configuration is supposed to work also for the image formats, and in which MapCache version.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-Jukka Rahkonen-<o:p></o:p></span></p>
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