feat: add CLEAR_SITE_DATA header

actix-http/CHANGES.md

@@ -2,6 +2,12 @@
 
 ## Unreleased
 
+### Added
+
+- Add `header::CLEAR_SITE_DATA` constant.
+
+### Changed
+
 - Update `brotli` dependency to `7`.
 - Minimum supported Rust version (MSRV) is now 1.75.
 

actix-http/src/header/common.rs

@@ -18,6 +18,14 @@ pub const CACHE_STATUS: HeaderName = HeaderName::from_static("cache-status");
 // TODO(breaking): replace with http's version
 pub const CDN_CACHE_CONTROL: HeaderName = HeaderName::from_static("cdn-cache-control");
 
+/// Response header field that sends a signal to the user agent that it ought to remove all data of
+/// a certain set of types.
+///
+/// See the [W3C Clear-Site-Data spec] for full semantics.
+///
+/// [W3C Clear-Site-Data spec]: https://www.w3.org/TR/clear-site-data/#header
+pub const CLEAR_SITE_DATA: HeaderName = HeaderName::from_static("clear-site-data");
+
 /// Response header that prevents a document from loading any cross-origin resources that don't
 /// explicitly grant the document permission (using [CORP] or [CORS]).
 ///

actix-http/src/header/mod.rs

@@ -42,9 +42,9 @@ pub use self::{
     as_name::AsHeaderName,
     // re-export list is explicit so that any updates to `http` do not conflict with this set
     common::{
-        CACHE_STATUS, CDN_CACHE_CONTROL, CROSS_ORIGIN_EMBEDDER_POLICY, CROSS_ORIGIN_OPENER_POLICY,
+        CACHE_STATUS, CDN_CACHE_CONTROL, CLEAR_SITE_DATA, CROSS_ORIGIN_EMBEDDER_POLICY,
-        CROSS_ORIGIN_RESOURCE_POLICY, PERMISSIONS_POLICY, X_FORWARDED_FOR, X_FORWARDED_HOST,
+        CROSS_ORIGIN_OPENER_POLICY, CROSS_ORIGIN_RESOURCE_POLICY, PERMISSIONS_POLICY,
-        X_FORWARDED_PROTO,
+        X_FORWARDED_FOR, X_FORWARDED_HOST, X_FORWARDED_PROTO,
     },
     into_pair::TryIntoHeaderPair,
     into_value::TryIntoHeaderValue,