watch for the correct string, and use client.close()

src/game/iter_once.rs

@@ -36,7 +36,8 @@ impl Game {
 				client.send_with_prompt(message);
 			} else {
 				client.send_without_prompt(&message);
-				if message == "Goodbye".to_string() {
+				if message == "Goodbye\n\n".to_string() {
+					let _ = client.close();
 					log::info!("Disconnect from {}", client);
 					self.clients.remove(&token);
 					self.tokens.push_back(token);