How Manage Multiple pages EventBus Instance and Listener

[pslxx]

like:
provider: AuthProvider.eventBus
WidgetPage: LivePage there is a socket connect, listen authProvider.eventBus.on then reconnect socket and send auth token,
now. LivePage dispose and rebuild !
how to remove Listener in page? if not there have duplicate event listener

sorry My English is very poor, can you understand me~

AuthProvider (Global~ Only one)

  Future initUserInfo() async {
    return await Request.getMyUserInfo().then((res) async {
      Map data = res['data'];
      setUser(UserInfoEntity().fromJson(data));
      print("fire user login");
      eventBus.fire(UserLoginEvent());
    }).catchError((error) {
      clearUser();
      throw error;
    });
  }

RoomProvider (multiple , can dispose and rebuild)

 Provider.of<AuthProvider>(context, listen: false)
        .eventBus
        .on<UserLoginEvent>()
        .listen((event) {
      print("----------------------------user login");
      disposeSocket();
      initSocket();
    });

    Provider.of<AuthProvider>(context, listen: false)
        .eventBus
        .on<UserLogoutEvent>()
        .listen((event) {
      print("----------------------------user logout");
      disposeSocket();
      initSocket();
    });

[pslxx]

yeah,I know ,
can define a StreamSubscription~~~~ and StreamSubscription.cancel