JC-comp opened a new pull request, #63406:
URL: https://github.com/apache/airflow/pull/63406
##### Description
The deployment environments result in a duplicated Date header—one generated
by the Flask application layer and another by the ASGI server. This PR
introduce `StripAppDateMiddleware` to remove the 'Date' header generated by the
application layer, ensuring that only one 'Date' header exists in the final
response.
```
$ curl -I localhost:8080/auth/static/pin_32.png
HTTP/1.1 200 OK
date: Thu, 12 Mar 2026 04:38:44 GMT <-- SENT BY uvicorn
server: uvicorn
content-disposition: inline; filename=pin_32.png
content-type: image/png
content-length: 1201
last-modified: Thu, 12 Mar 2026 01:43:44 GMT
cache-control: no-cache
etag: "1773279824.6871002-1201-1792155666"
date: Thu, 12 Mar 2026 04:38:44 GMT <-- DUPLICATE SENT BY FLASK
vary: Cookie
```
##### Changes
- New Middleware: Added `StripAppDateMiddleware` to intercept outgoing
responses.
- App Integration: Registered the middleware in the `FastAPI` initialization
flow.
- Unit Tests: Added automated tests to verify the header is removed from the
response.
##### How to Verify
Unit test suite:
1. Mocks a FastAPI request through the middleware.
2. Asserts that the `date` key is no longer present in the
`response.headers`.
Manual:
1. Run the api-server.
2. Make a request using curl.
```
$ curl -I localhost:8080/auth/static/pin_32.png
```
4. Confirm no duplicate date header.
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