[Bug]: Can't preview markdown and plantuml through web

[JWleo]

Is there an existing issue for this?

• I have searched the existing issues

OS/Web Information

• Web Browser: Google Chrome 86.0.4240.198
• Local OS: WIN10
• Remote OS: LIUNX
• Remote Architecture: CENTOS 8.2
• code-server --version:4.3.0

Steps to Reproduce

1. code-server

Expected

Actual

Logs

Screenshot/Video

No response

Does this issue happen in VS Code?

• I cannot reproduce this in VS Code.

Are you accessing code-server over HTTPS?

• I am using HTTPS.

Notes

How can i use code-server easily without setting so much things???

[ThunderingII]

This issue is same to #4421

Do you know which version of codeserver doesn't has this bug？

[jsjoeio]

Did you disable service workers? I'm not sure why it's failing to register.

[JWleo]

solve this. It's the prolblem of https. just make mkcert to produce *.crt and *.pfx, and download to local to terify it.

[JWleo]

This issue is same to #4421

Do you know which version of codeserver doesn't has this bug？

NO,IT's your duty to slove your env. Maybe @jsjoeio could make it easily to use in the future version

[ThunderingII]

do you mean that this web app force us to use https？but sometimes we run it on local area network，so we don't use domain and only use ip like 192.168.1.x，when in this env，this feature looks like a bug

[jsjoeio]

@ThunderingII unfortunately that's a limitation of the browsers. They only allow service workers in secure contexts (i.e. HTTPS/localhost). VS Code needs service workers enabled for most features so there isn't much we can do.