From b9f0faafde1d451cc73776992a99a1eb03595a69 Mon Sep 17 00:00:00 2001
From: Rob Ede <robjtede@icloud.com>
Date: Sat, 21 Jan 2023 00:02:54 +0000
Subject: [PATCH] add cache-status and cdn-cache-control header names (#2968)

* add cache-status and cdn-cache-control header names

* fix changelog

* update docs with rfc numbers
---
 actix-http/CHANGES.md           |  5 ++++-
 actix-http/src/header/common.rs | 12 ++++++++++++
 actix-http/src/header/mod.rs    |  5 +++--
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/actix-http/CHANGES.md b/actix-http/CHANGES.md
index 7feec2a1a..4f765e28b 100644
--- a/actix-http/CHANGES.md
+++ b/actix-http/CHANGES.md
@@ -7,7 +7,9 @@
 - Implement `MessageBody` for `Pin<B>` where `B::Target: MessageBody`. [#2868]
 - Automatic h2c detection via new service finalizer `HttpService::tcp_auto_h2c()`. [#2957]
 - `HeaderMap::retain()` [#2955].
-- Header name constants in `header` module. [#2956]
+- Header name constants in `header` module. [#2956] [#2968]
+  - `CACHE_STATUS`
+  - `CDN_CACHE_CONTROL`
   - `CROSS_ORIGIN_EMBEDDER_POLICY`
   - `CROSS_ORIGIN_OPENER_POLICY`
   - `PERMISSIONS_POLICY`
@@ -24,6 +26,7 @@
 [#2957]: https://github.com/actix/actix-web/pull/2957
 [#2955]: https://github.com/actix/actix-web/pull/2955
 [#2956]: https://github.com/actix/actix-web/pull/2956
+[#2968]: https://github.com/actix/actix-web/pull/2968
 
 
 ## 3.2.2 - 2022-09-11
diff --git a/actix-http/src/header/common.rs b/actix-http/src/header/common.rs
index 52909099a..67b0a9069 100644
--- a/actix-http/src/header/common.rs
+++ b/actix-http/src/header/common.rs
@@ -4,6 +4,18 @@
 
 use http::header::HeaderName;
 
+/// Response header field that indicates how caches have handled that response and its corresponding
+/// request.
+///
+/// See [RFC 9211](https://www.rfc-editor.org/rfc/rfc9211) for full semantics.
+pub const CACHE_STATUS: HeaderName = HeaderName::from_static("cache-status");
+
+/// Response header field that allows origin servers to control the behavior of CDN caches
+/// interposed between them and clients separately from other caches that might handle the response.
+///
+/// See [RFC 9213](https://www.rfc-editor.org/rfc/rfc9213) for full semantics.
+pub const CDN_CACHE_CONTROL: HeaderName = HeaderName::from_static("cdn-cache-control");
+
 /// Response header that prevents a document from loading any cross-origin resources that don't
 /// explicitly grant the document permission (using [CORP] or [CORS]).
 ///
diff --git a/actix-http/src/header/mod.rs b/actix-http/src/header/mod.rs
index e2c2fe912..a63174a92 100644
--- a/actix-http/src/header/mod.rs
+++ b/actix-http/src/header/mod.rs
@@ -55,8 +55,9 @@ pub use self::{
 
 // re-export list is explicit so that any updates to `http` do not conflict with this set
 pub use self::common::{
-    CROSS_ORIGIN_EMBEDDER_POLICY, CROSS_ORIGIN_OPENER_POLICY, CROSS_ORIGIN_RESOURCE_POLICY,
-    PERMISSIONS_POLICY, X_FORWARDED_FOR, X_FORWARDED_HOST, X_FORWARDED_PROTO,
+    CACHE_STATUS, CDN_CACHE_CONTROL, CROSS_ORIGIN_EMBEDDER_POLICY, CROSS_ORIGIN_OPENER_POLICY,
+    CROSS_ORIGIN_RESOURCE_POLICY, PERMISSIONS_POLICY, X_FORWARDED_FOR, X_FORWARDED_HOST,
+    X_FORWARDED_PROTO,
 };
 
 /// An interface for types that already represent a valid header.