1 files changed, 17 insertions, 0 deletions
diff --git a/third_party/rust/warp/examples/dyn_reply.rs b/third_party/rust/warp/examples/dyn_reply.rs
new file mode 100644
index 0000000000..4f59cf8ba9
--- /dev/null
+++ b/third_party/rust/warp/examples/dyn_reply.rs
@@ -0,0 +1,17 @@
+#![deny(warnings)]
+use warp::{http::StatusCode, Filter};
+
+async fn dyn_reply(word: String) -> Result<Box<dyn warp::Reply>, warp::Rejection> {
+    if &word == "hello" {
+        Ok(Box::new("world"))
+    } else {
+        Ok(Box::new(StatusCode::BAD_REQUEST))
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let routes = warp::path::param().and_then(dyn_reply);
+
+    warp::serve(routes).run(([127, 0, 0, 1], 3030)).await;
+}