server headers impact

[pmp-p]

When self.send_header("Cross-Origin-Embedder-Policy", "require-corp") is missing the sixel addon of xterm js won't load.

Todo check impact of self.send_header("Access-Control-Allow-Origin", "*") missing.

on pyscript some people got CORB problems too ( like getting images from another site) , so i guess pygbag will get impacted too. https://chromium.googlesource.com/chromium/src/+/master/services/network/cross_origin_read_blocking_explainer.md

https://snigel.com/blog/a-simple-guide-to-coop-coep-corp-and-cors