Exception & Crash on disconnect

In both iOS and Android now, we’re getting a crash when calling Client.DisconnectAsync

has anyone else seen this?

[mono] Unhandled Exception:
[mono] System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. ---> System.ObjectDisposedException: Cannot access a disposed object.
[mono] Object name: 'MobileAuthenticatedStream'.
[mono]   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <fcbf47a04b2e4d90beafbae627e1fca4>:0 
[mono]   at Mono.Net.Security.MobileAuthenticatedStream+<StartOperation>d__58.MoveNext () [0x001bf] in <bcdc1df2b3724ab69797f3819a126346>:0 
[mono]    --- End of inner exception stack trace ---

[chkr1011]

Hi @acrabb , thanks for reporting this issue. I already fixed this for the next version (2.7.2). Best regards Christian

[acrabb]

hm, looks like this is happening again for iOS. Both in 2.7.3-rc3 and after upgrading to 2.7.4 Not sure if @Flo1987 (https://github.com/chkr1011/MQTTnet/issues/210) is seeing it too?

2018-04-27 10:51:40.775 Wolf.iOS[4764:86068] (Workout) IMqttPipe: disconnected
2018-04-27 10:51:40.792 Wolf.iOS[4764:83576] (Error) UnobservedTaskException: System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. ---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'MobileAuthenticatedStream'.
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152 
  at Mono.Net.Security.MobileAuthenticatedStream+<StartOperation>d__58.MoveNext () [0x001b9] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/System/Mono.Net.Security/MobileAuthenticatedStream.cs:380 
   --- End of inner exception stack trace ---
---> (Inner Exception #0) System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'MobileAuthenticatedStream'.
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152 
  at Mono.Net.Security.MobileAuthenticatedStream+<StartOperation>d__58.MoveNext () [0x001b9] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.8.0.20/src/Xamarin.iOS/mcs/class/System/Mono.Net.Security/MobileAuthenticatedStream.cs:380 <---