[gdal-dev] /vsicurl/ and 3XX response code

[aborruso]

Hi Even,


Even Rouault-2 wrote
> /vsicurl/ should automatically follow links. This is even tested in
> https://github.com/OSGeo/gdal/blob/master/autotest/gcore/vsicurl.py#L230

I have this example CSV input source
https://query.data.world/s/q4h3mwm2acruvoc5snpp5ltsn5h2gk

It replies:

HTTP/1.1 301 Moved Permanently
Connection: keep-alive
Content-Length: 0
Date: Wed, 11 Mar 2020 17:24:23 GMT
Location:
https://download.data.world/file_download/ondata/covid-19-italia-dati-dipartimento-protezione-civile/dpc-covid19-ita-regioni.csv?auth=eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiJwcm9kLXVzZXItY2xpZW50OmFib3JydXNvIiwiaXNzIjoiYWdlbnQ6YWJvcnJ1c286OmRlNTc0ZTFlLTVhNzktNDhhZC1hMDk0LTdiZmI5YWExNTBiYyIsImlhdCI6MTU4MzkzNDg2Nywicm9sZSI6WyJ1c2VyIiwidXNlcl9hcGlfYWRtaW4iLCJ1c2VyX2FwaV9yZWFkIiwidXNlcl9hcGlfd3JpdGUiXSwiZ2VuZXJhbC1wdXJwb3NlIjpmYWxzZSwidXJsIjoiMjU5OTdiNjUwZGYzYjllOWM2ZTM1MWIxYTMwZDVmYWJhZjA0NjQxYiJ9.8-yXU5WpfkOcZ5VFMNVtaGwBy7ZaT4yIWIWQ8P1NIgR4o11jnwqH9DpcghdUcvvHNYQZwIDAYIRiwJe5zVLWLA
Server: nginx
Vary: Origin

If I set this VRT input file

<OGRVRTDataSource>
<OGRVRTLayer name="dpc-covid19-ita-regioni">
    <SrcDataSource
relativeToVRT="0">/vsicurl/https://query.data.world/s/q4h3mwm2acruvoc5snpp5ltsn5h2gk</SrcDataSource>
    <GeometryType>wkbPoint</GeometryType>
    <LayerSRS>WGS84</LayerSRS>
    <GeometryField encoding="PointFromColumns" x="long" y="lat"/>
</OGRVRTLayer>
</OGRVRTDataSource>

and run "ogrinfo input.vrt" I have

"ERROR 1: Failed to open datasource
`/vsicurl/https://query.data.world/s/q4h3mwm2acruvoc5snpp5ltsn5h2gk'"

If I run "curl -L http...." I have the CSV.

Probably there is some error of mine, but I don't know which it is.

Thank you





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