UDP seems to work now

src/listener.rs

@@ -1,9 +1,9 @@
-use crate::shutdown::Shutdown;
+use crate::shutdown::ShutdownReceiver;
 use std::sync::Arc;
 use tokio::sync::RwLock;
 
 pub(crate) struct Listener {
-   pub(crate) shutdown: Shutdown,
-   pub(crate) source: String,
-   pub(crate) targets: Arc<RwLock<Vec<String>>>,
+    pub(crate) shutdown: ShutdownReceiver,
+    pub(crate) source: String,
+    pub(crate) targets: Arc<RwLock<Vec<String>>>,
 }