Call `onClosed` or provide an `onStopped` method to be called when the connection is stopped in certain cases

[Haidar Mehsen]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

I was running a Flutter app that uses on its android side the signalr java client.
In the android side (the java client), I listen to the onClosed callback from the java client to schedule automatice reconnects in my app.
I was doing a heavy download on my wifi network which was taking the bandwidth from all other apps including my app mentioned above, so the activatePingTimer method appears to have timedout and called the private stop method.
The problem is that this private stop method, does not call the onClosed callback registered by my app, so my app never knew the connection was closed so that it can reschedule an auto-reconnect.
I know that the onClosed callback is documented as

Registers a callback to run when the connection is closed.

But does not this case indicate that connection is closed?
If this is a bug, then the private stop method should call the onClosed callbacks.
Else if this is how its intended to work, then can you provide a way to listen to when the connection stops?
(Whats the difference anyway between "stop" and "close", other than that "close" disposes the resources associated with the object?)

Expected Behavior

No response

Steps To Reproduce

No response

Exceptions (if any)

No response

.NET Version

No response

Anything else?

Here is a part of the logs

I/HubConnection( 2748): HubConnection started.
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
E/HubConnection( 2748): HubConnection disconnected with an error: Server timeout elapsed without receiving a message from the server..
I/OkHttpWebSocketWrapper( 2748): WebSocket closing with status code '1000' and reason ''.
E/HubConnection( 2748): HubConnection disconnected with an error Server timeout elapsed without receiving a message from the server..
I/HubConnection( 2748): HubConnection stopped.
I/WebSocketTransport( 2748): WebSocket connection stopped.

(I removed my app logs from the logs above)