SendRecv_0ByteReceive_Success Fails on Mono

https://dev.azure.com/dnceng/public/_build/results?buildId=798022&view=logs&j=e25ca8f9-4d91-5a25-cc71-96bc9bb65608&t=22eea7f6-9ad0-52cf-3602-d79b35211bce

https://helix.dot.net/api/2019-06-17/jobs/46f1dd60-28dc-4609-9028-34004178de8d/workitems/System.Net.Sockets.Tests/console

/root/helix/work/workitem /root/helix/work/workitem
  Discovering: System.Net.Sockets.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  System.Net.Sockets.Tests (found 838 of 1232 test cases)
  Starting:    System.Net.Sockets.Tests (parallel test collections = on, max threads = 6)
    System.Net.Sockets.Tests.UdpClientTest.Finalize_NoExceptionsThrown [SKIP]
      Condition(s) not met: "IsPreciseGcSupported"
    System.Net.Sockets.Tests.DisposedSocket.NonDisposedSocket_SafeHandlesCollected [SKIP]
      Condition(s) not met: "IsPreciseGcSupported"
    System.Net.Sockets.Tests.CreateSocket.Ctor_Raw_Supported_Success [SKIP]
      Condition(s) not met: "SupportsRawSockets"
    System.Net.Sockets.Tests.SendReceiveTask.SendRecv_0ByteReceive_Success [FAIL]
      Assert.False() Failure
      Expected: False
      Actual:   True
      Stack Trace:
        /_/src/libraries/System.Net.Sockets/tests/FunctionalTests/SendReceive.cs(681,0): at System.Net.Sockets.Tests.SendReceive`1.<SendRecv_0ByteReceive_Success>d__11[[System.Net.Sockets.Tests.SocketHelperTask, System.Net.Sockets.Tests, Version=5.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51]].MoveNext()
        --- End of stack trace from previous location ---
  Finished:    System.Net.Sockets.Tests
=== TEST EXECUTION SUMMARY ===
   System.Net.Sockets.Tests  Total: 1118, Errors: 0, Failed: 1, Skipped: 3, Time: 22.494s

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

Using this Kusto query, it appears the test has failed once, ever.

TestResults
| where WorkItemFriendlyName == "System.Net.Sockets.Tests" and Method == "SendRecv_0ByteReceive_Success" and Result == "Fail"
| order by Duration desc

We should monitor if this continues, but I suspect it may be networking related and not a specific runtime issue.

It is interesting that the test expects Task to be pending since there is nothing to read ... yet. So this seems more like Async scheduling issue than networking.
We can certainly close it if there is re-occurence.

No hits in last 14 days. Closing

https://runfo.azurewebsites.net/search/tests/?bq=definition%3Aruntime+started%3A%7E14&tq=name%3ASendRecv_0ByteReceive_Succes

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SendRecv_0ByteReceive_Success Fails on Mono #41777

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SendRecv_0ByteReceive_Success Fails on Mono #41777

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Dotnet-GitSync-Bot commented on Sep 3, 2020

steveisok commented on Sep 11, 2020

wfurt commented on Sep 11, 2020

jaredpar commented on Sep 29, 2020

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