System.Net.Quic is leaking UnobservedTaskExceptions #80111
Closed
Description
I have a console app with HttpClient that continuously sends requests to a localhost Kestrel instance.
If I randomly shut down and restart the server while HttpClient is making requests, I can see sporadic UnobservedTaskExceptions coming from System.Net.Quic.
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. (Operation aborted.)
---> System.Net.Quic.QuicException: Operation aborted.
at System.Net.Quic.ResettableValueTaskSource.TryComplete(Exception exception, Boolean final) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\Internal\ResettableValueTaskSource.cs:line 157
at System.Net.Quic.ResettableValueTaskSource.TrySetException(Exception exception, Boolean final) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\Internal\ResettableValueTaskSource.cs:line 221
at System.Net.Quic.QuicStream.HandleEventShutdownComplete(_SHUTDOWN_COMPLETE_e__Struct& data) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicStream.cs:line 634
at System.Net.Quic.QuicStream.HandleStreamEvent(QUIC_STREAM_EVENT& streamEvent) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicStream.cs:line 671
at System.Net.Quic.QuicStream.NativeCallback(QUIC_HANDLE* connection, Void* context, QUIC_STREAM_EVENT* streamEvent) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicStream.cs:line 695
--- End of stack trace from previous location ---
at System.Net.Quic.ResettableValueTaskSource.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\Internal\ResettableValueTaskSource.cs:line 235
at System.Net.Quic.QuicStream.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicStream.cs:line 306
at System.Net.Http.Http3Connection.<>c__DisplayClass45_0.<<ProcessServerControlStreamAsync>g__ReadFrameEnvelopeAsync|0>d.MoveNext() in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Http\src\System\Net\Http\SocketsHttpHandler\Http3Connection.cs:line 679
--- End of stack trace from previous location ---
at System.Net.Http.Http3Connection.ProcessServerControlStreamAsync(QuicStream stream, ArrayBuffer buffer) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Http\src\System\Net\Http\SocketsHttpHandler\Http3Connection.cs:line 624
at System.Net.Http.Http3Connection.ProcessServerStreamAsync(QuicStream stream) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Http\src\System\Net\Http\SocketsHttpHandler\Http3Connection.cs:line 520
at System.Net.Http.Http3Connection.ProcessServerStreamAsync(QuicStream stream) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Http\src\System\Net\Http\SocketsHttpHandler\Http3Connection.cs:line 575
--- End of inner exception stack trace ---
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. (Operation aborted.)
---> System.Net.Quic.QuicException: Operation aborted.
at System.Net.Quic.QuicConnection.HandleEventShutdownComplete() in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 492
at System.Net.Quic.QuicConnection.HandleConnectionEvent(QUIC_CONNECTION_EVENT& connectionEvent) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 571
at System.Net.Quic.QuicConnection.NativeCallback(QUIC_HANDLE* connection, Void* context, QUIC_CONNECTION_EVENT* connectionEvent) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 598
--- End of stack trace from previous location ---
at System.Net.Quic.QuicConnection.AcceptInboundStreamAsync(CancellationToken cancellationToken) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 402
at System.Net.Http.Http3Connection.AcceptStreamsAsync() in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Http\src\System\Net\Http\SocketsHttpHandler\Http3Connection.cs:line 438
--- End of inner exception stack trace ---
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. (The server is currently unreachable.)
---> System.Net.Quic.QuicException: The server is currently unreachable.
at System.Net.Quic.QuicConnection.HandleEventShutdownInitiatedByTransport(_SHUTDOWN_INITIATED_BY_TRANSPORT_e__Struct& data) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 470
at System.Net.Quic.QuicConnection.HandleConnectionEvent(QUIC_CONNECTION_EVENT& connectionEvent) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 569
at System.Net.Quic.QuicConnection.NativeCallback(QUIC_HANDLE* connection, Void* context, QUIC_CONNECTION_EVENT* connectionEvent) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 598
--- End of stack trace from previous location ---
at System.Net.Quic.ValueTaskSource.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\Internal\ValueTaskSource.cs:line 176
at System.Net.Quic.QuicConnection.FinishConnectAsync(QuicClientConnectionOptions options, CancellationToken cancellationToken) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 312
at System.Net.Quic.QuicConnection.ConnectAsync(QuicClientConnectionOptions options, CancellationToken cancellationToken) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 68
at System.Net.Quic.QuicConnection.ConnectAsync(QuicClientConnectionOptions options, CancellationToken cancellationToken) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Quic\src\System\Net\Quic\QuicConnection.cs:line 73
at System.Net.Http.ConnectHelper.ConnectQuicAsync(HttpRequestMessage request, DnsEndPoint endPoint, TimeSpan idleTimeout, SslClientAuthenticationOptions clientAuthenticationOptions, CancellationToken cancellationToken) in C:\MihaZupan\runtime-debug\src\libraries\System.Net.Http\src\System\Net\Http\SocketsHttpHandler\ConnectHelper.cs:line 120
--- End of inner exception stack trace ---
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