[gdal-dev] Help with STACIT

[Even Rouault]

Hi,

I concur with Laurențiu's analysis. I've just pushed a fix in 
https://github.com/OSGeo/gdal/commit/b4565edc5931d1111228fbbdada739e18ebd2bf6 
. With that retrieving items work as well as pagination ... but that 
collection doesn't implement the Projection Extension Specification 
(https://github.com/stac-extensions/projection/) so ultimately the 
driver errors out.

And you shouldn't use /vsicurl/ prefixing for STAC API servers, since 
they aren't serving static content but reply to requests, and so can't 
work with HTTP range requests

Even

Le 03/12/2025 à 21:19, Laurențiu Nicola via gdal-dev a écrit :
> Hi Scott,
>
> It's a little strange:
>
> $ CPL_DEBUG=ON CURL_CPL_VERBOSE=YES gdal raster info --if STACIT "https://cmr.earthdata.nasa.gov/stac/LPCLOUD/search?collections=VIP01_004&bbox=-180,-90,180,90"
>
> HTTP: Fetch(https://cmr.earthdata.nasa.gov/stac/LPCLOUD/search?collections=VIP01_004&bbox=-180,-90,180,90)
> HTTP: libcurl/8.15.0 OpenSSL/3.5.4 zlib/1.3.1.zlib-ng libidn2/2.3.8 nghttp2/1.66.0
> HTTP: These POSTFIELDS were sent:{}
> ERROR 1: HTTP error code : 403
>
> This doesn't log as much as I expected, but it sounds like it's doing a POST, given https://github.com/OSGeo/gdal/blob/master/port/cpl_http.cpp#L2565-L2571. However, if I connect to a dummy server, I see:
>
> GET /stac/LPCLOUD/search?collections=VIP01_004&bbox=-180,-90,180,90 HTTP/1.1
> Host: 127.0.0.1:7777
> User-Agent: GDAL/3.11.5
> Accept: */*
> Accept-Encoding: gzip
> Content-Type: application/json
> Content-Length: 2
>
> {}
>
> That's a GET request with a body, which isn't really supported. You can reproduce this with cURL:
>
> $ curl -X GET --json '{}' "https://cmr.earthdata.nasa.gov/stac/LPCLOUD/search?collections=VIP01_004&bbox=-180,-90,180,90"
>
> [snipped CloudFront 403 error]
>
> Laurentiu
>
> On Wed, Dec 3, 2025, at 22:01, Scott via gdal-dev wrote:
>> Greetings,
>>
>> I need some help with STACIT syntax. This does not work:
>>
>> gdal raster info
>> "STACIT:\"/vsicurl/https://cmr.earthdata.nasa.gov/stac/LPCLOUD/search?collections=VIP01_004&bbox=-180,-90,180,90\""
>>
>> ...it returns:
>>
>> ERROR 1: JSON parsing error: continue (at offset 0)
>> Usage: gdal raster info [OPTIONS] <INPUT>
>> Try 'gdal raster info --help' for help.
>>
>> If I open the link in a browser or use wget, I get the expected geojson
>> output:
>>
>> wget
>> 'https://cmr.earthdata.nasa.gov/stac/LPCLOUD/search?collections=VIP01_004&bbox=-180,-90,180,90'
>> -O tst.geojson
>>
>> Debian 12, GDAL 3.12.0
>>
>> Thanks!
>> Scott
>>
>> -- 
>> www.postholer.com
>>
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