wasm files are not loaded on Firefox due to wrong Content-Type

[jpastuszek]

Describe the bug

On Firefox I get an error in JS console:

wasm streaming compile failed: TypeError: WebAssembly: Response has unsupported MIME type 'application/octet-stream' expected 'application/wasm'

This is in relation for request to /libs/olm.wasm.

With out this WASM compiled the performance is so low that video does not work and client gets "Connection: poor" even thought there is plenty of bandwidth available.

Context

• Hardware: VM on home server (Dell PC)
• YunoHost version: 11.0.11
• I have access to my server: Through SSH | through the webadmin
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: yes
  • If yes, please explain: It is behind Caddy, and I work around the issue there, direct request still gives wrong Content-Type.
• Using, or trying to install package version/branch: 2.0.8138~ynh1

Steps to reproduce

1. Go to Jitsi Meet
2. Start a conference
3. Check JS console output for

wasm streaming compile failed: TypeError: WebAssembly: Response has unsupported MIME type 'application/octet-stream' expected 'application/wasm'

OR

curl https://example.com/libs/olm.wasm -v

If you get this there is a problem:

< content-type: application/octet-stream

Expected behavior

No error, video working and curl request giving:

< content-type: application/wasm

[yalh76]

seems that nginx configuration is missing:

https://github.com/jitsi/jitsi-meet/blob/5e90e725626bf8a63c227897b9ddb0194f9b8651/doc/debian/jitsi-meet/jitsi-meet.example#L3-L7