STAC browser - relative urls not supported: Protocol "" is uknown

[ttomasz]

What is the bug or the crash?

When STAC catalog has relative URLs to its children then the browser throws error Protocol "" is unknown.

I also see in debugging tools (F12) that it tries to make request to the URL exactly as it's presented i.e. without trying to resolve the relative URL based on URL from connection.

Steps to reproduce the issue

1. Add connection to STAC catalog that has relative URLs e.g.: https://pub-a8cc9feb8bdc4fdf9cbf37078dc21b8e.r2.dev/catalog.json.
2. Try to open the collection by clicking the little arrow

Versions

QGIS version	3.40.0-Bratislava
QGIS code branch	Release 3.40
Libraries
Qt version	5.15.10
Python version	3.11.9
GDAL/OGR version	3.10.0
PROJ version	9.5.0
EPSG Registry database version	v11.016 (2024-08-31)
GEOS version	3.13.0-CAPI-1.19.0
SQLite version	3.47.0
PDAL version	2.8.1
PostgreSQL client version	unknown
SpatiaLite version	5.1.0
QWT version	6.1.5
QScintilla2 version	2.14.1
OS version	KDE Flatpak runtime
Active Python plugins
QuickOSM	2.2.3
cartogram3	3.1.5
felt	3.1.5
qgis_stac	1.1.2
AnotherDXF2Shape	1.3.2
GTFS_Loader	1.0.0
zoom_level	0.3.1
qgis-maptiler-plugin	3.3.2
AnimateOsm	0.3.0
processing	2.12.99
db_manager	0.1.20
grassprovider	2.12.99
MetaSearch	0.3.6

Supported QGIS version

• [X] I'm running a supported QGIS version according to the roadmap.

New profile

• [ ] I tried with a new QGIS profile

Additional context

Relative URLs may not be recommended but they are allowed according to the specification and work in STAC Web Browser: https://radiantearth.github.io/stac-browser/#/external/pub-a8cc9feb8bdc4fdf9cbf37078dc21b8e.r2.dev/catalog.json

[wonder-sk]

Can you try with the nightly builds please? It should be already fixed by https://github.com/qgis/QGIS/pull/59199

[uclaros]

Automatic backporting to 3.40 failed though, I'll do a manual back port

[github-actions[bot]]

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