Make LocalEndPointTest and some Connect tests non-parallel

[antonfirsov]

There is some chance that sockets in these tests are connecting to, or being connected by sockets of other, unrelated parallel tests.

Fixes #52141. Hopefully fixes #55709 too, although I don't have a proof that the reported socket error can be the result of unrelated accepts. We can reopen the issues if we'll keep experiencing them in the CI.

Fixes #52141
Fixes #55709
Fixes #56042

[ghost]

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Issue Details

---

There is some chance that these tests are connected/being connected by sockets of unrelated tests.

Fixes #52141. Hopefully fixes #55709 too, although I don't have a proof that the reported socket error can be the result of unrelated accepts. We can reopen the issues if we'll keep experiencing them in the CI.

Author:	antonfirsov
Assignees:	-
Labels:	area-System.Net.Sockets
Milestone:	-

[wfurt]

do you know how much time it added to complete run @antonfirsov? (just curious)

[antonfirsov]

< 100 ms for LocalEndPointTest. Haven't checked the Connect tests.

[karelz]

@antonfirsov I updated top post with "Fixes #number" to trigger auto-close when this is merged.

[karelz]

Test failures seem to be unrelated: (re-running just in case)

• https://github.com/dotnet/runtime/pull/56399/checks?check_run_id=3174766497
  • Tests failed: /root/runtime/artifacts/TestResults/Release/AppHost.Bundle.Tests_net6.0_x64.html [net6.0|x64]
• https://github.com/dotnet/runtime/pull/56399/checks?check_run_id=3174211175

Failed to retrieve information about 'System.ComponentModel.TypeConverter.TestData' from remote source 'https://pkgs.dev.azure.com/dnceng/9ee6d478-d288-47f7-aacc-f6e6d082ae6d/_packaging/1a5f89f6-d8da-4080-b15f-242650c914a8/nuget/v3/flat2/system.componentmodel.typeconverter.testdata/index.json'.
   at NuGet.Protocol.HttpFileSystemBasedFindPackageByIdResource.FindPackagesByIdAsync(String id, SourceCacheContext cacheContext, ILogger logger, CancellationToken cancellationToken) in NuGet.Protocol.dll:token 0x6000392+0x2dc
   at NuGet.Protocol.HttpFileSystemBasedFindPackageByIdResource.EnsurePackagesAsync(String id, SourceCacheContext cacheContext, ILogger logger, CancellationToken cancellationToken) in NuGet.Protocol.dll:token 0x6000391+0x13f
   at NuGet.Protocol.HttpFileSystemBasedFindPackageByIdResource.DoesPackageExistAsync(String id, NuGetVersion version, SourceCacheContext cacheContext, ILogger logger, CancellationToken cancellationToken) in NuGet.Protocol.dll:token 0x6000390+0x17c
   at NuGet.Commands.SourceRepositoryDependencyProvider.FindLibraryCoreAsync(LibraryRange libraryRange, SourceCacheContext cacheContext, ILogger logger, CancellationToken cancellationToken) in NuGet.Commands.dll:token 0x6000459+0x379
   at NuGet.Commands.SourceRepositoryDependencyProvider.<>c__DisplayClass19_0.<<FindLibraryAsync>b__0>d.MoveNext() in NuGet.Commands.dll:token 0x6000a2d+0xb6