Update the handler to close the connection if empty data.

notification_producer/producer_client.py

@@ -58,10 +58,16 @@ class ProducerClient:
                 message = input('message: ')
                 await self.send_notification(title, message)
 
+                if title == '' and message == '':
+                    self.console.print(f"[yellow b][INFO][/] Finished.")
+                    self.console.print("[green]bye[/]")
+                    break
+
         except asyncio.CancelledError:
             pass
         except KeyboardInterrupt:
             print("\nbye")
+            await self.send_notification('', '')
             sys.exit(0)
         finally:
             self.writer.close()