How to detect when hub disconnect?

[bahman2000]

I need to detect when user disconnect. How can I implemet that like below code:

hubConnection.on('disconnect', (arguments) async { print("Connection Closed") });

or

hubConnection.onclose( (error) => print("Connection Closed"));

[MuhammedShadi]

@bahman2000 I think that signalr_netcore: ^1.4.1 will be a good alternative to solve this issue