bind on ipv6 too

src/main.rs

@@ -78,7 +78,8 @@ async fn main() -> std::io::Result<()> {
             .service(json)
             .service(actix_files::Files::new("/", static_dir.clone()).index_file("index.html"))
     })
-    .bind("127.0.0.1:8080")?
+    .bind((std::net::Ipv4Addr::LOCALHOST, 8080))?
+    .bind((std::net::Ipv6Addr::LOCALHOST, 8080))?
     .run()
     .await
 }