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webp transcoding does not work for MapProxyDomain resources written in-place. #1149

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jmarantz opened this Issue Oct 6, 2015 · 1 comment

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jmarantz commented Oct 6, 2015

If you have
MapProxyDomain mps_host/origin origin_host/static
a request for:
http://mps_host/origin/foo.jpg
will not be transcoded to webp.

This might seem like an odd case, because why would a browser request http://mps_host/origin/foo.jpg? It works fine with MapProxyDomain when there is URL rewriting in HTML, in which case the webp request is encoded in the rewritten URL and it is not rewritten in-place.

However you can in theory construct an HTML page with MapProxyDomain and a bunch of references to external images via their manually rewritten proxied location, say, as a demo showing the benefits of passing those images through MPS.

@jmarantz jmarantz self-assigned this Oct 6, 2015

jmarantz added a commit that referenced this issue Oct 9, 2015

Allow IPRO transcoding to work with MapProxyDomain, addressing
#1149

Note that IPRO+MPD was working (and optimizing) in MPS; it just wasn't
getting the right UA/Accept-header bits propagated into the
request_properties, so webp transcoding didn't happen.
@jeffkaufman

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jeffkaufman commented Oct 23, 2015

Fixed by 52f0d46

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