v0.34.3

src/proxy/cache_helpers.rs

@@ -291,11 +291,14 @@ fn finish_headers(
             HeaderValue::from_static("private, no-store"),
         );
     }
-    if frontend.is_some_and(|frontend| !frontend.http3_enabled) {
-        response.headers_mut().remove("alt-svc");
-    } else {
-        crate::http3::advertise(response.headers_mut(), local, tls, active);
-    }
+    crate::http3::advertise(
+        response.headers_mut(),
+        local,
+        tls,
+        active,
+        &snapshot.listeners,
+        !frontend.is_some_and(|frontend| !frontend.http3_enabled),
+    );
 }
 fn apply_timing_headers(
     response: &mut Response,

src/proxy/upstream_helpers.rs

@@ -316,14 +316,24 @@ async fn observe(State(state): State<Arc<App>>, mut request: Request, next: Next
             .get::<RedirectResponse>()
             .is_some_and(|redirect| !redirect.http3_enabled)
         {
-            response.headers_mut().remove("alt-svc");
+            crate::http3::withdraw_advertisement(
+                response.headers_mut(),
+                local,
+                transport_tls,
+                &state.active_listeners,
+            );
         }
         if response
             .extensions()
             .get::<LocalHostResponse>()
             .is_some_and(|item| !item.http3_enabled)
         {
-            response.headers_mut().remove("alt-svc");
+            crate::http3::withdraw_advertisement(
+                response.headers_mut(),
+                local,
+                transport_tls,
+                &state.active_listeners,
+            );
         }
         let global_compression = &snapshot.envelope.config.compression;
         // All scoped policies have the global codec ceiling. With no accepted