Unhandeled exception? TaskCompletionSource`1[TResult].SetException

[SHuygh]

Previous issue and what changed

#682

I updated to version 3.4.0 as suggested to see if the issue would be fixed. However the behaviour remains the same. Since our latest release on April 3th about 2% of our users have been affected by this issue.

Actual Behavior

1. Exception is thrown which causes the application to crash

Expected Behavior

Either

1. Exception can be caught and handled
2. Exception is not thrown

Versions

• OS platform and version: Android 8.0.0
• .NET Version: Xamarin
• NuGet package version or commit ID: 3.1.1

Description

It is not clear where and when the exception is thrown. It first appeared that it would have been thrown in the ctor but no exception was caught here and the application still crashes.
Is this a bug, or are we missing where this exception should be handled.

Code

               _subscriptionClient = new SubscriptionClient(_settingsService.PrimaryOutboundEndpoint,
                                                             PrimaryOutboundTopic,
                                                             PrimaryOutboundSubscription, TokenProvider.CreateSharedAccessSignatureTokenProvider(PrimaryOutboundSasToken),
                                                             receiveMode: ReceiveMode.PeekLock,
                                                             retryPolicy: _retryPolicy);
            
        _subscriptionClient.RegisterMessageHandler(

               async (message, cancellationToken1) =>
                {
                    if (_subscriptionClient != null && !_subscriptionClient.IsClosedOrClosing)
                    {
                        await MessageHandler(message, cancellationToken1, _subscriptionClient);
                    }
                },
                new MessageHandlerOptions(LogMessageHandlerException) { AutoComplete = false, MaxConcurrentCalls = MAX_CONCURRENT_CALLS });

StackTrace

Android: 8.0.0
Android Build: R16NW
Manufacturer: samsung
Model: SM-A600FN
CrashReporter Key: 9246b0b2-7af1-4db1-99ed-980b0f207e8b
Date: undefined

Xamarin Exception Stack:
System.InvalidOperationException:
at System.Threading.Tasks.TaskCompletionSource`1[TResult].SetException (System.Exception exception) [0x00013] in :0
at Microsoft.Azure.Amqp.Transport.AmqpTransportInitiator+<>c__DisplayClass15_0.b__0 (Microsoft.Azure.Amqp.Transport.TransportAsyncCallbackArgs a) [0x00014] in :0
at Microsoft.Azure.Amqp.Transport.AmqpTransportInitiator.Complete (Microsoft.Azure.Amqp.Transport.TransportAsyncCallbackArgs args) [0x00076] in :0
at Microsoft.Azure.Amqp.Transport.AmqpTransportInitiator.OnConnectComplete (Microsoft.Azure.Amqp.Transport.TransportAsyncCallbackArgs args) [0x00008] in :0
at Microsoft.Azure.Amqp.Transport.TlsTransportInitiator.Complete () [0x00059] in :0
at Microsoft.Azure.Amqp.Transport.TlsTransportInitiator.HandleInnerTransportConnected (Microsoft.Azure.Amqp.Transport.TransportAsyncCallbackArgs innerArgs) [0x0002a] in :0
at Microsoft.Azure.Amqp.Transport.TlsTransportInitiator.OnInnerTransportConnected (Microsoft.Azure.Amqp.Transport.TransportAsyncCallbackArgs innerArgs) [0x00006] in :0
at Microsoft.Azure.Amqp.Transport.TcpTransportInitiator.Complete (System.Net.Sockets.SocketAsyncEventArgs e, System.Boolean completeSynchronously) [0x000b7] in :0
at Microsoft.Azure.Amqp.Transport.TcpTransportInitiator.OnConnectComplete (System.Object sender, System.Net.Sockets.SocketAsyncEventArgs e) [0x00026] in :0
at System.Net.Sockets.SocketAsyncEventArgs.OnCompleted (System.Net.Sockets.SocketAsyncEventArgs e) [0x0000e] in <4c0ea12a669844598cada415d99299fd>:0
at System.Net.Sockets.SocketAsyncEventArgs.Complete () [0x00000] in <4c0ea12a669844598cada415d99299fd>:0
at System.Net.Sockets.Socket+<>c.<.cctor>b__309_3 (System.IAsyncResult ares) [0x00057] in <4c0ea12a669844598cada415d99299fd>:0
at System.Net.Sockets.SocketAsyncResult+<>c.b__27_0 (System.Object state) [0x0000b] in <4c0ea12a669844598cada415d99299fd>:0
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem () [0x00008] in :0
at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00074] in :0
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback () [0x00000] in :0

Thread 2:
0 md532e88b764fa2f2b57f502dd15796e5c4.GmsLocationTrackingService.n_onSensorChanged(GmsLocationTrackingService.java:-2)
1 md532e88b764fa2f2b57f502dd15796e5c4.GmsLocationTrackingService.onSensorChanged(GmsLocationTrackingService.java:48)
2 android.hardware.SystemSensorManager$SensorEventQueue.dispatchSensorEvent(SystemSensorManager.java:964)
3 android.os.MessageQueue.nativePollOnce(MessageQueue.java:-2)
4 android.os.MessageQueue.next(MessageQueue.java:325)
5 android.os.Looper.loop(Looper.java:142)
6 android.app.ActivityThread.main(ActivityThread.java:6944)
7 java.lang.reflect.Method.invoke(Method.java:-2)
8 com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
9 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

Thread 51698:
0 java.lang.Object.wait(Object.java:-2)
1 java.lang.Daemons$ReferenceQueueDaemon.runInternal(Daemons.java:178)
2 java.lang.Daemons$Daemon.run(Daemons.java:103)
3 java.lang.Thread.run(Thread.java:764)

Thread 51699:
0 java.lang.Object.wait(Object.java:-2)
1 java.lang.Object.wait(Object.java:422)
2 java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:188)
3 java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:209)
4 java.lang.Daemons$FinalizerDaemon.runInternal(Daemons.java:232)
5 java.lang.Daemons$Daemon.run(Daemons.java:103)
6 java.lang.Thread.run(Thread.java:764)

Thread 51700:
0 java.lang.Thread.sleep(Thread.java:-2)
1 java.lang.Thread.sleep(Thread.java:373)
2 java.lang.Thread.sleep(Thread.java:314)
3 java.lang.Daemons$FinalizerWatchdogDaemon.sleepFor(Daemons.java:342)
4 java.lang.Daemons$FinalizerWatchdogDaemon.waitForFinalization(Daemons.java:364)
5 java.lang.Daemons$FinalizerWatchdogDaemon.runInternal(Daemons.java:281)
6 java.lang.Daemons$Daemon.run(Daemons.java:103)
7 java.lang.Thread.run(Thread.java:764)

Thread 51718:
0 android.os.MessageQueue.nativePollOnce(MessageQueue.java:-2)
1 android.os.MessageQueue.next(MessageQueue.java:325)
2 android.os.Looper.loop(Looper.java:142)
3 android.os.HandlerThread.run(HandlerThread.java:65)

Thread 51719:
0 android.os.MessageQueue.nativePollOnce(MessageQueue.java:-2)
1 android.os.MessageQueue.next(MessageQueue.java:325)
2 android.os.Looper.loop(Looper.java:142)
3 android.os.HandlerThread.run(HandlerThread.java:65)

Thread 51721:
0 android.os.MessageQueue.nativePollOnce(MessageQueue.java:-2)
1 android.os.MessageQueue.next(MessageQueue.java:325)
2 android.os.Looper.loop(Looper.java:142)
3 android.os.HandlerThread.run(HandlerThread.java:65)

Thread 51722:
0 android.os.MessageQueue.nativePollOnce(MessageQueue.java:-2)
1 android.os.MessageQueue.next(MessageQueue.java:325)
2 android.os.Looper.loop(Looper.java:142)
3 android.os.HandlerThread.run(HandlerThread.java:65)

Thread 51730:
0 android.os.MessageQueue.nativePollOnce(MessageQueue.java:-2)
1 android.os.MessageQueue.next(MessageQueue.java:325)
2 android.os.Looper.loop(Looper.java:142)
3 android.os.HandlerThread.run(HandlerThread.java:65)

Thread 51737:
0 java.lang.Object.wait(Object.java:-2)
1 com.android.okhttp.okio.AsyncTimeout.awaitTimeout(AsyncTimeout.java:323)
2 com.android.okhttp.okio.AsyncTimeout.-wrap0
3 com.android.okhttp.okio.AsyncTimeout$Watchdog.run(AsyncTimeout.java:286)

Thread 51752:
0 android.os.MessageQueue.nativePollOnce(MessageQueue.java:-2)
1 android.os.MessageQueue.next(MessageQueue.java:325)
2 android.os.Looper.loop(Looper.java:142)
3 android.os.HandlerThread.run(HandlerThread.java:65)

Thread 52769:
0 java.lang.Object.wait(Object.java:-2)
1 java.lang.Thread.parkFor$(Thread.java:2135)
2 sun.misc.Unsafe.park(Unsafe.java:358)
3 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:230)
4 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2101)
5 java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
6 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1086)
7 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
8 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
9 java.lang.Thread.run(Thread.java:764)

Thread 52770:
0 java.lang.Object.wait(Object.java:-2)
1 java.lang.Thread.parkFor$(Thread.java:2135)
2 sun.misc.Unsafe.park(Unsafe.java:358)
3 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:230)
4 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2101)
5 java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
6 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1086)
7 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
8 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
9 java.lang.Thread.run(Thread.java:764)

Thread 52771:
0 java.lang.Object.wait(Object.java:-2)
1 java.lang.Thread.parkFor$(Thread.java:2135)
2 sun.misc.Unsafe.park(Unsafe.java:358)
3 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:230)
4 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2101)
5 java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
6 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1086)
7 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
8 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
9 java.lang.Thread.run(Thread.java:764)

Thread 52772:
0 java.lang.Object.wait(Object.java:-2)
1 com.android.okhttp.ConnectionPool$1.run(ConnectionPool.java:101)
2 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
3 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
4 java.lang.Thread.run(Thread.java:764)

Thread 52773:
0 java.lang.Object.wait(Object.java:-2)
1 java.lang.Thread.parkFor$(Thread.java:2135)
2 sun.misc.Unsafe.park(Unsafe.java:358)
3 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:230)
4 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2101)
5 java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
6 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1086)
7 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
8 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
9 java.lang.Thread.run(Thread.java:764)

Thread 52851:
0 java.lang.Object.wait(Object.java:-2)
1 com.android.okhttp.ConnectionPool$1.run(ConnectionPool.java:101)
2 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
3 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
4 java.lang.Thread.run(Thread.java:764)