Cannot specify base url for GDExtension on web platform

[mmarklar]

Tested versions

Tested in 4.3-stable

System information

Web/WASM

Issue description

I am trying to serve a Godot project on the web and am unable to load GDExtension wasm from urls not relative to the current page. The urls used by the server look something like:

https://servername.com/play/
https://servername.com/static/

with play/ running through an application server to template the html file while static/ files (js, wasm, etc) are served from something like S3.

This works fine until GDExtensions are involved because you can set mainPack and executable to the path you want and they will be fetched correctly. For extensions, it will fetch them as a relative path and there does not seem to be anything to change it. Using the urls above it would go to https://servername.com/play/libname.whatever.wasm instead of https://servername.com/static/libname.whatever.wasm. When I modify the application server to return the wasm on the url Godot uses, everything works.

Three questions:

• Am I missing something? Is there some way to set this?
• Is this a common problem that should be fixed for all godot users or am I on my own here?
• If it is a common problem then any pointers on what the 'correct' way to approach it would be appreciated.

Thanks!

Steps to reproduce

N/A

Minimal reproduction project (MRP)

N/A