Unclear Astro.redirect behavior in SSR

[y-nk]

What version of astro are you using?

latest

Are you using an SSR adapter? If so, which one?

vercel@latest

What package manager are you using?

yarn

What operating system are you using?

doesn't matter

What browser are you using?

chromium

Describe the Bug

Usecase

I'm trying to create a "Protected Route" pattern where a page would be wrapped in a <ProtectedRoute> component which would redirect to /login if a user is not logged in.

Problem

1. I've tried with a layout → there's an error
2. I've tried with a component → there's an error
3. I've tried with a separate page → it gets ignored

Question

Since we must return Astro.redirect(), it seems we can't wrap things up a level upper. How to proceed then?

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-fnw2f4?file=src/pages/from-page.astro,src/pages/index.astro,src/pages/redirected.astro,src/pages/from-layout.astro,src/pages/from-component.astro,src/pages/from-other-page.astro&on=stackblitz

Participation

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

[matthewp]

This is the same issue as #6632. I'll try to create a better error message. But you can only use Astro.redirect, and set headers in the page component due to streaming.