Assert.Equal failure in SocketAsyncEventArgsTest.Connect_Parallel_FailsOver (got 127.0.0.1:59851)

[matouskozak]

Build Information

Build: 20260129.1, 20260129.5

Build error leg or test failing: System.Net.Sockets.Tests.SocketAsyncEventArgsTest.Connect_Parallel_FailsOver, System.Net.Sockets.Tests.SocketAsyncEventArgsTest.Connect_Parallel_Success, System.Net.Sockets.Tests.SocketAsyncEventArgsTest.Connect_Parallel_Fails

Affected CI jobs: build_tvOS_arm64_Release_AllSubsets_Mono

Causing Commit Range Information

Commit range: {TODO: Insert commit range or link to changes}

Summary

• Assert.Equal failure in SocketAsyncEventArgsTest.Connect_Parallel_FailsOver: Expected null, Actual 127.0.0.1:59851
• Job: build_tvOS_arm64_Release_AllSubsets_Mono; failing assembly: System.Net.Sockets.Tests
• Related test Connect_Parallel_Fails timed out with message 'Completed did not get called in time' (execution time ~30.00s)
• Connect_Parallel_Success also failed with System.InvalidOperationException: 'You must call the Bind method before performing this operation.' in Socket.AcceptAsync

Failure Statistics

Note: These statistics are based on the configured time range and might not reflect the full history of the failure.

• Occurrence Count: 8
• First Failure: 2026-01-29 13:02:39 UTC
• Last Failure: 2026-01-30 07:39:10 UTC

Error Message

{
  "ErrorMessage": [
    "Expected: null",
    "Actual:   127.0.0.1"
  ],
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

[dotnet-policy-service]

Tagging subscribers to 'os-tvos': @vitek-karas, @kotlarmilos, @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

[dotnet-policy-service]

Tagging subscribers to this area: @karelz, @dotnet/ncl
See info in area-owners.md if you want to be subscribed.

[liveans]

cc @wfurt

[wfurt]

seems tvOS specific. We should investigate.