Does "gdalinfo --debug on --config CPL_CURL_VERBOSE YES ..." show 2x requests?
I think the problem likely is the S3 signature is only valid for one file/url, not the corresponding .jp2.aux.xml file, so the request for the latter fails. Not sure of an easy way to fix that without writing a vsicurls3 module that can do the signing... Though JP2 supports storing coordinate information (bounds) in the file, just not the projection details - not sure if you could work around that? Rob :) On Wed, Dec 10, 2014 at 8:37 AM, MWilson Matthew <[email protected]> wrote: > Good afternoon, > > I’ve been trying to track down some intermittent failures and I believe > I’ve come across something. I was able to run the gdalinfo command on > imagery on s3 using a presigned url, vsicurl, and the following options: > > --config GDAL_HTTP_UNSAFESSL YES --config GDAL_DISABLE_READDIR_ON_OPEN > EMPTY_DIR --config CPL_VSIL_CURL_USE_HEAD NO > > > > However, I did note today that running the gdalinfo command on a jp2 did > not return the coordinate information against an s3 image that required a > presigned url. Running it against another s3 instance that does not > require a presigned url resulted in the full coordinate/projection > information being visible. > > > > As another test, I ran the gdalinfo command against a tif file on the > presigned url instance, and that also worked. > > > > To me, this means that there is a limitation in how gdal is reading the > images on s3 when a presigned url is required to get at them, specifically, > the auxiliary files aren’t being read. This does kind of make sense > because the geotiff would have that information in the header if I’m not > mistaken, and the jp2 would not. > > > > Would anyone on the list have come across this before? Does this make > sense? > > > > Thanks, > > Matthew > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- *Koordinates*PO Box 1604, Shortland St, Auckland 1140, New Zealand Phone +64-9-966 0433 koordinates.com <https://koordinates.com/about>
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