Enabling HTTPS is not working for astro preview

[sebthom]

Astro Info

Astro                    v5.1.2
Node                     v22.12.0
System                   Windows (x64)
Package Manager          pnpm
Output                   static
Adapter                  none
Integrations             unplugin-yaml
                         @astrojs/sitemap
                         pagefind
                         astro-runtime-config
                         @playform/compress
                         @astrojs/mdx

If this issue only occurs in one browser, which browser is a problem?

No response

Describe the Bug

Enabling HTTPS via @vitejs/plugin-basic-ssl works for dev mode but is ignored for preview mode.

astro config:

import { defineConfig } from 'astro/config';
import basicSsl from '@vitejs/plugin-basic-ssl';

// https://astro.build/config
export default defineConfig({
  vite: {
    plugins: [basicSsl()],
  },
});

What's the expected result?

Preview mode also uses HTTPS when @vitejs/plugin-basic-ssl is configured.

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-aymh1xh1

Participation

• I am willing to submit a pull request for this issue.

[ematipico]

I don't think we have the mean to make this work in preview unless this is implemented inside Astro.

After the build, vite doesn't exist anymore, and so as the plugin.

This isn't a bug. I suggest you to open a new discussion and propose supporting https in preview command.