v.24.9Improvement

Use HTTP/1.1 for External HTTP Authenticators

Official CH changelog text
Use HTTP/1.1 instead of HTTP/1.0 (set by default) for external HTTP authenticators. #68456 (Aleksei Filatov).
ClickHouse external HTTP authenticators now use HTTP/1.1 instead of HTTP/1.0 by default.

Why it matters

This change improves compatibility and performance by upgrading the HTTP protocol version used for external HTTP authentication requests from HTTP/1.0 to HTTP/1.1, which supports features like persistent connections and chunked transfer encoding.

How to use it

No manual action is required as the external HTTP authenticators use HTTP/1.1 by default starting from this version.

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