Merge Vary header

[sstepanchuk]

Is this okay Vary header don't merge with Vary header from response (other layers)? each layer should add Vary header?

Here layers

let middleware_stack = ServiceBuilder::new()
        .layer(
            CorsLayer::new()
                .allow_origin(AllowOrigin::list(vec![
                    "http://test.com".parse::<HeaderValue>().unwrap(),
                    "http://example.com".parse::<HeaderValue>().unwrap(),
                ]))
                .allow_methods([Method::GET, Method::POST])
        )
        .layer(
            CompressionLayer::new()
                .quality(CompressionLevel::Best)
        );

Here resposne

HTTP/1.1 200 OK
content-type: application/json
vary: origin, access-control-request-method, access-control-request-headers
vary: accept-encoding
content-length: 109
date: Wed, 05 Feb 2025 17:45:27 GMT