Related `mod_zip` issue https://github.com/evanmiller/mod_zip/issues/90
has been fixed in commit
288d66541c
By upgrading `mod_zip` to include this fix, we can remove the workaround
that involved using a separate internal location and server to serve
files for zipping.
The COEP (Cross-Origin Embedder Policy) and COOP (Cross-Origin Opener
Policy) headers are needed by EmulatorJS to use the `SharedArrayBuffer`
feature, and enable multi-threaded cores.
These headers are only being set by Nginx for responses to requests
made to the EmulatorJS player path. This is because cross-origin
isolation breaks other features in the application (such as YouTube
embeds), so we only want to enable it for the EmulatorJS player.
It's important to mention that this change does not work when `DEV_MODE`
is set, as we would need Vite server to also set these headers in that
case. This could be implemented separately, if needed.
These changes are not enough to enable multi-threaded cores in the
frontend. Because our application is a SPA, we also need to ensure
that navigation to the EmulatorJS player path results in a full page
reload, so that the cross-origin isolation can be applied. This will be
handled in a separate PR.
The nginx configuration was not updated to use the `ROMM_BASE_PATH`
environment variable when serving the library files.
We no longer hardcode the base path to `/romm`, but instead use the
provided path.
Using the `envsubst` command, we can replace environment variables in
the nginx template files. This allows for more flexibility when
configuring the nginx server.
The Docker image we use as base for Nginx does provide the
`20-envsubst-on-templates.sh` script that will replace environment
variables in the template files.
This change does not include any behavior change, but unblocks future
changes that require environment variables in the nginx configuration.
