CORS Issue: Custom Header Being Blocked by IC Boundary Node

I’m not sure. I had issues with partial media files back in the day. I think this has been resolved. I know you can mess with headers in asset canisters using the json5 file.

See discussion: Boundary node http response headers - #72 by faraz.shaikh

This is what we used but it was last updated 3 years ago:

This may be the new one:

Maybe some clues as to what happens here: Code search results · GitHub

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