Szymon Malewski 6b2fce03f9 alternator: optional stripping of http response headers ...

In Alternator's HTTP API, response headers can dominate bandwidth for
small payloads. The Server, Date, and Content-Type headers were sent on
every response but many clients never use them.

This patch introduces three Alternator config options:
  - alternator_http_response_server_header,
  - alternator_http_response_disable_date_header,
  - alternator_http_response_disable_content_type_header,
which allow customizing or suppressing the respective HTTP response
headers. All three options support live update (no restart needed).
The Server header is no longer sent by default; the Date and
Content-Type defaults preserve the existing behavior.

The Server and Date header suppression uses Seastar's
set_server_header() and set_generate_date_header() APIs added in
https://github.com/scylladb/seastar/pull/3217. This patch also
fixes deprecation warnings from older Seastar HTTP APIs.

Tests are in test/alternator/test_http_headers.py.

Fixes https://scylladb.atlassian.net/browse/SCYLLADB-70

Closes scylladb/scylladb#28288

2026-05-19 10:47:13 +03:00

169 KiB

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