feature: expose redirect policy through extension

tower-http/src/builder.rs

@@ -160,6 +160,26 @@ pub trait ServiceBuilderExt<L>: sealed::Sealed<L> + Sized {
         >,
     >;
 
+    /// Follow redirect responses using the [`Standard`] policy,
+    /// storing it as an extension.
+    ///
+    /// See [`tower_http::follow_redirect`] for more details.
+    ///
+    /// [`tower_http::follow_redirect`]: crate::follow_redirect
+    /// [`Standard`]: crate::follow_redirect::policy::Standard
+    #[cfg(feature = "follow-redirect")]
+    fn follow_redirects_extension(
+        self,
+    ) -> ServiceBuilder<
+        Stack<
+            crate::follow_redirect::FollowRedirectLayer<
+                crate::follow_redirect::policy::Standard,
+                crate::follow_redirect::UriAndPolicyExtensions,
+            >,
+            L,
+        >,
+    >;
+
     /// Mark headers as [sensitive] on both requests and responses.
     ///
     /// See [`tower_http::sensitive_headers`] for more details.
@@ -459,6 +479,25 @@ impl<L> ServiceBuilderExt<L> for ServiceBuilder<L> {
         self.layer(crate::follow_redirect::FollowRedirectLayer::new())
     }
 
+    #[cfg(feature = "follow-redirect")]
+    fn follow_redirects_extension(
+        self,
+    ) -> ServiceBuilder<
+        Stack<
+            crate::follow_redirect::FollowRedirectLayer<
+                crate::follow_redirect::policy::Standard,
+                crate::follow_redirect::UriAndPolicyExtensions,
+            >,
+            L,
+        >,
+    > {
+        self.layer(
+            crate::follow_redirect::FollowRedirectLayer::with_policy_extension(
+                crate::follow_redirect::policy::Standard::default(),
+            ),
+        )
+    }
+
     #[cfg(feature = "sensitive-headers")]
     fn sensitive_headers<I>(
         self,