Alex Langenfeld 93bb22ad0c Preserve committed app route response status during fallback (#98649) ...

### What?

A follow up to https://github.com/vercel/next.js/pull/94979, now we
check if response headers have already been sent before trying to send a
`500` response when falling back.

### Why?

To get streaming respnses that already sent status `200` headers from
reporting as `500`s in telemetry.

### How?

Skip the fallback `500` status response if headers have already been
sent.

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Signed-off-by: Alex Langenfeld <alex.langenfeld@vercel.com>

2026-09-16 19:21:05 +02:00

..

client-trace-metadata

Remove server route matcher stack (#94157)

2026-08-15 13:07:22 +02:00

instrumentation

Preserve committed app route response status during fallback (#98649)

2026-09-16 19:21:05 +02:00