add failing test for external middleware rewrite with changed headers #49606
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What?
Within Issue #48040 / PR #49487 the middleware proxy for external rewrites was fixed. Unfortunately, this does not work when you change the headers in your middleware (according to https://vercel.com/templates/next.js/edge-functions-modify-request-header)
Why?
We still have issues with the latest canary
How?
Unfortunately I was not able to find the issue, just recreating the bug in a testcase