Update app.py

app.py

@@ -229,11 +229,11 @@ async def handler(websocket):
         # First player starts a new game.
         await start(websocket, message)
 
-    # assert event["type"] == "cmd"
+    assert event["type"] == "cmd"
 
-    # if "cmd" in event:
-    #     # Second player joins an existing game.
-    #     await execute_command(websocket, project_name, event["command"])
+    if "command" in event:
+        # Second player joins an existing game.
+        await execute_command(websocket, project_name, event["command"])
     # elif "watch" in event:
     #     # Spectator watches an existing game.
     #     await watch(websocket, event["watch"])