SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo test failed with "Exception type was not an exact match"

[jkotas]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1081940
Build error leg or test failing: System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo
Pull request: #117128

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": ["Failure: Exception type was not an exact match","SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo [FAIL]"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1081940
Error message validated: [Failure: Exception type was not an exact match SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo [FAIL]]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 6/30/2025 5:09:32 PM UTC

Report

Build	Definition	Test	Pull Request
1085494	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo	#117292
1085320	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo	#117254
1084966	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo	#113299
1082720	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo	#117056
1082674	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_HttpClientHandlerTest_Http3.SendAsync_RequestWithDangerousControlHeaderValue_ThrowsHttpRequestException	#117188
1082625	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_MaxResponseHeadersLength_Http3.LargeSingleHeader_ThrowsException	#116901
1081940	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo	#117128

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
3	7	7

[jkotas]

Log snippet:

Unhandled exception. Xunit.Sdk.ThrowsException: Assert.Throws() Failure: Exception type was not an exact match
Expected: typeof(System.Threading.Tasks.TaskCanceledException)
Actual:   typeof(Xunit.Sdk.EqualException)
   at Xunit.Assert.Throws(Type exceptionType, Exception exception) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 45
   at Xunit.Assert.ThrowsAsync[T](Func`1 testCode) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 272
   at System.Net.Http.Functional.Tests.DiagnosticsTest.<>c__DisplayClass19_0.<<SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo>b__1>d.MoveNext() in /_/src/libraries/System.Net.Http/tests/FunctionalTests/DiagnosticsTests.cs:line 874
--- End of stack trace from previous location ---
   at System.Threading.Tasks.TaskTimeoutExtensions.GetRealException(Task task) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 120
--- End of stack trace from previous location ---
   at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 90
   at System.Net.Test.Common.LoopbackServerFactory.<>c__DisplayClass6_0.<<CreateClientAndServerAsync>b__0>d.MoveNext() in /_/src/libraries/Common/tests/System/Net/Http/GenericLoopbackServer.cs:line 44
--- End of stack trace from previous location ---
   at System.Net.Test.Common.Http3LoopbackServerFactory.CreateServerAsync(Func`3 funcAsync, Int32 millisecondsTimeout, GenericLoopbackOptions options) in /_/src/libraries/Common/tests/System/Net/Http/Http3LoopbackServer.cs:line 115
   at System.Net.Http.Functional.Tests.DiagnosticsTest.<SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo>g__RunTest|19_0(String useVersion, String testAsync) in /_/src/libraries/System.Net.Http/tests/FunctionalTests/DiagnosticsTests.cs:line 865
   at Microsoft.DotNet.RemoteExecutor.Program.Main(String[] args) in /_/src/arcade/src/Microsoft.DotNet.RemoteExecutor/src/Program.cs:line 65
--- End of stack trace from previous location ---
   at Microsoft.DotNet.RemoteExecutor.Program.Main(String[] args) in /_/src/arcade/src/Microsoft.DotNet.RemoteExecutor/src/Program.cs:line 97
    System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo [FAIL]
      Microsoft.DotNet.RemoteExecutor.RemoteExecutionException : Remote process failed with an unhandled exception.
      Stack Trace:
        
        Child exception:
          Xunit.Sdk.ThrowsException: Assert.Throws() Failure: Exception type was not an exact match
        Expected: typeof(System.Threading.Tasks.TaskCanceledException)
        Actual:   typeof(Xunit.Sdk.EqualException)
        /_/src/libraries/System.Net.Http/tests/FunctionalTests/DiagnosticsTests.cs(874,0): at System.Net.Http.Functional.Tests.DiagnosticsTest.<>c__DisplayClass19_0.<<SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo>b__1>d.MoveNext()
        --- End of stack trace from previous location ---
        /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs(120,0): at System.Threading.Tasks.TaskTimeoutExtensions.GetRealException(Task task)
        --- End of stack trace from previous location ---
        /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs(90,0): at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks)
        /_/src/libraries/Common/tests/System/Net/Http/GenericLoopbackServer.cs(44,0): at System.Net.Test.Common.LoopbackServerFactory.<>c__DisplayClass6_0.<<CreateClientAndServerAsync>b__0>d.MoveNext()
        --- End of stack trace from previous location ---
        /_/src/libraries/Common/tests/System/Net/Http/Http3LoopbackServer.cs(115,0): at System.Net.Test.Common.Http3LoopbackServerFactory.CreateServerAsync(Func`3 funcAsync, Int32 millisecondsTimeout, GenericLoopbackOptions options)
        /_/src/libraries/System.Net.Http/tests/FunctionalTests/DiagnosticsTests.cs(865,0): at System.Net.Http.Functional.Tests.DiagnosticsTest.<SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo>g__RunTest|19_0(String useVersion, String testAsync)
        /_/src/arcade/src/Microsoft.DotNet.RemoteExecutor/src/Program.cs(65,0): at Microsoft.DotNet.RemoteExecutor.Program.Main(String[] args)
        
        Child process:
          System.Net.Http.Functional.Tests, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51 System.Net.Http.Functional.Tests.DiagnosticsTest System.Threading.Tasks.Task <SendAsync_OperationCanceledException_RecordsActivitiesWithCorrectErrorInfo>g__RunTest|19_0(System.String, System.String)
        
        Child arguments:
          3.0, True

[jkotas]

More of #116279. cc @antonfirsov

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[antonfirsov]

There seems to be some flakyness around cancellation timing in this test.

[amanasifkhalid]

I'm seeing similar failures in SendAsync_RequestWithDangerousControlHeaderValue_ThrowsHttpRequestException (example log):

System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_HttpClientHandlerTest_Http3.SendAsync_RequestWithDangerousControlHeaderValue_ThrowsHttpRequestException(dangerousChar: 'A', headerType: Cookie) [FAIL]
      Assert.Contains() Failure: Sub-string not found
      String:    "A QUIC protocol error was encountered."
      Not found: "ASCII"
      Stack Trace:
        /_/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs(2222,0): at System.Net.Http.Functional.Tests.HttpClientHandlerTest.SendAsync_RequestWithDangerousControlHeaderValue_ThrowsHttpRequestException(Char dangerousChar, HeaderType headerType)
        --- End of stack trace from previous location ---
      Output:
        System.Net.Http.HttpRequestException: A QUIC protocol error was encountered. (example.com:443)
...

@jkotas can we update the error message filter to capture "A QUIC protocol error was encountered", or should these be tracked separately?