SignalR Connection Timeout in Xamarin Forms-CodePudding

This

Finding out the reason for disconnect using code, per Microsoft ref:

public override System.Threading.Tasks.Task OnDisconnected(bool stopCalled) { if (stopCalled) { Console.WriteLine(String.Format("Client {0} explicitly closed the connection.", Context.ConnectionId)); } else { Console.WriteLine(String.Format("Client {0} timed out .", Context.ConnectionId)); } return base.OnDisconnected(stopCalled); }

Armed with these two

your Question 1/Answer

...If so, how do I make user aware of updates?

$.connection.hub.reconnecting(function() { notifyUserOfTryingToReconnect(); // wire up your custom function to notify user. }); $.connection.hub.connectionSlow(function() { notifyUserOfConnectionProblem(); // wire up your custom function let them know its slow. });

Question 2: on Xamarin / Android

On mobile/Android (ios is pain though) you will need a Foreground Service running, which aids the app in keeping the connection alive. Alternatively like your original idea, long polling is another good option.

For e.g

[Service] public class MyUserChatForegroundService : Service { // implement your foreground service to keep the connection alive. ... }

Wherever you start your Activity with Intent wire this up, and lastly your Service first,

invoke StartForeground using OnStartCommand override, otherwise the service will just get killed.

var intent = new Intent(this, typeof(MyUserChatForegroundService )); StartForegroundService(intent);

Hope this helps.