heartbeat

crates/common/src/lib.rs

@@ -1,7 +1,21 @@
 use serde::Deserialize;
 use serde::Serialize;
 
-pub type WebSocketMessage = State;
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
+pub enum WebSocketMessageServerToApp {
+    /// State (server to app).
+    State(State),
+
+    /// Keep-alive message.
+    HeartBeat,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
+pub enum WebSocketMessageAppToServer {
+    /// Keep-alive message.
+    HeartBeat,
+}
+
 pub type RestResponse<T> = Result<T, RestError>;
 
 #[derive(thiserror::Error, Default, Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]