Allow HeaderMap to be cloned (actix#1014)

* Allow HeaderMap to be cloned * Add entry to changelog
Penglq · Jul 29, 2019 · 511026c · 511026c
1 parent 81ab37f
commit 511026c
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diff --git a/actix-http/CHANGES.md b/actix-http/CHANGES.md
@@ -2,6 +2,10 @@
 
 ## [0.2.8] - 2019-07-xx
 
+### Changed
+
+* Add `Clone` impl for `HeaderMap`
+
 ### Fixed
 
 * Invalid response with compression middleware enabled, but compression-related features disabled #997

diff --git a/actix-http/src/header/map.rs b/actix-http/src/header/map.rs
@@ -9,12 +9,12 @@ use http::HttpTryFrom;
 /// `HeaderMap` is an multimap of [`HeaderName`] to values.
 ///
 /// [`HeaderName`]: struct.HeaderName.html
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct HeaderMap {
     pub(crate) inner: HashMap<HeaderName, Value>,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub(crate) enum Value {
     One(HeaderValue),
     Multi(Vec<HeaderValue>),