feat: implement naive client ping

apps/server/src/adapters/WebsocketAdapter.ts

@@ -100,6 +100,16 @@ export class SocketServer implements IAdapter {
           const message = JSON.parse(data);
           const { type, payload } = message;
 
+          if (type === 'ping') {
+            ws.send(
+              JSON.stringify({
+                type: 'pong',
+                payload,
+              }),
+            );
+            return;
+          }
+
           if (type === 'get-client-name') {
             ws.send(
               JSON.stringify({

apps/server/src/app.ts

@@ -188,6 +188,7 @@ export const startServer = async (
       direction: SimpleDirection.CountDown,
     },
     frozen: false,
+    ping: -1,
   });
 
   // initialise logging service, escalateErrorFn is only exists in electron