CI failure on Windows: Connection aborted in SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds

## Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1542869
Build error leg or test failing: System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds
Pull request: https://github.com/dotnet/runtime.git/pull/131876

## Error Message

**DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK** otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Build%20Analysis/KnownIssueJsonStepByStep.md).

```json
{
"ErrorMessage": ["SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds", "SocketException : An established connection was aborted by the software in your host machine."],
"BuildRetry": false,
"ExcludeConsoleLog": false
}
```

```
System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds(safeChar: 0x007f, headerType: Content) [FAIL]
System.Net.Http.HttpRequestException : An error occurred while sending the request.
---- System.IO.IOException : Unable to read data from the transport connection: An established connection was aborted by the software in your host machine..
-------- System.Net.Sockets.SocketException : An established connection was aborted by the software in your host machine.
Stack Trace:
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs(902,0): at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
/_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/AsyncHelpers.CoreCLR.cs(725,0): at System.Runtime.CompilerServices.AsyncHelpers.TransparentAwait[T](Task`1 task)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(389,0): at System.Net.Http.HttpConnectionPool.SendWithNtConnectionAuthAsync(HttpConnection connection, HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(501,0): at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
/_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(139,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/RedirectHandler.cs(29,0): at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpMessageHandlerStage.cs(21,0): at System.Net.Http.HttpMessageHandlerStage.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/SocketsHttpHandler.cs(668,0): at System.Net.Http.SocketsHttpHandler.g__CreateHandlerAndSendAsync|119_0(HttpRequestMessage request, CancellationToken cancellationToken)
/_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(139,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
/_/src/libraries/System.Net.Http/src/System/Net/Http/HttpClient.cs(544,0): at System.Net.Http.HttpClient.g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
/_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(139,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
/_/src/libraries/System.Net.Http/src/System/Net/Http/HttpClient.cs(518,0): at System.Net.Http.HttpClient.SendAsync(HttpRequestMessage request)
/_/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs(2276,0): at System.Net.Http.Functional.Tests.HttpClientHandlerTest.<>c__DisplayClass54_0.b__0(Uri uri)
/_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs(119,0): at System.Threading.Tasks.TaskTimeoutExtensions.GetRealException(Task task)
--- End of stack trace from previous location ---
/_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs(89,0): 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.b__0(GenericLoopbackServer server, Uri uri)
/_/src/libraries/Common/tests/System/Net/Http/LoopbackServer.cs(107,0): at System.Net.Test.Common.LoopbackServer.CreateServerAsync(Func`2 funcAsync, Options options)
/_/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs(2251,0): at System.Net.Http.Functional.Tests.HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds(Char safeChar, HeaderType headerType)
--- End of stack trace from previous location ---
----- Inner Stack Trace -----
/_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/AsyncHelpers.CoreCLR.cs(739,0): at System.Runtime.CompilerServices.AsyncHelpers.TransparentAwait[T](ValueTask`1 task)
/_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/NetworkStream.cs(607,0): at System.Net.Sockets.NetworkStream.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs(1655,0): at System.Net.Http.HttpConnection.InitialFillAsync(Boolean async)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs(650,0): at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
----- Inner Stack Trace -----
/_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs(1374,0): at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError error, Boolean forAsyncThrow)
/_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs(1056,0): at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ReceiveAsync(Socket socket, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs(305,0): at System.Net.Sockets.Socket.ReceiveAsync(Memory`1 buffer, SocketFlags socketFlags, Boolean fromNetworkStream, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/NetworkStream.cs(597,0): at System.Net.Sockets.NetworkStream.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs(1655,0): at System.Net.Http.HttpConnection.InitialFillAsync(Boolean async)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs(650,0): at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(398,0): at System.Net.Http.HttpConnectionPool.SendWithNtProxyAuthAsync(HttpConnection connection, HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(388,0): at System.Net.Http.HttpConnectionPool.SendWithNtConnectionAuthAsync(HttpConnection connection, HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
/_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(501,0): at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
/_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs(3636,0): at System.Threading.Tasks.Task.RunContinuations(Object continuationObject)
/_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs(960,0): at System.Threading.ThreadPoolWorkQueue.Dispatch()
/_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.cs(137,0): at System.Threading.PortableThreadPool.WorkerThread.WorkerDoWork(PortableThreadPool threadPoolInstance)
/_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.cs(110,0): at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
/_/src/coreclr/System.Private.CoreLib/src/System/Threading/Thread.CoreCLR.cs(117,0): at System.Threading.Thread.StartCallback(Thread* pThread)
--- End of stack trace from previous location ---
```

This is similar to https://github.com/dotnet/runtime/issues/130458

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=1542869
**Error message validated:** `[SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds SocketException : An established connection was aborted by the software in your host machine.`]
**Result validation:** :white_check_mark: Known issue matched with the provided build.
**Validation performed at:** 8/7/2026 1:52:53 PM UTC

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1596084](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596084)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596084&view=ms.vss-test-web.build-test-results-tab&runId=44065636&resultId=207306)|dotnet/runtime#133896|
|[1595880](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595880)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595880&view=ms.vss-test-web.build-test-results-tab&runId=44060756&resultId=199253)|dotnet/runtime#133885|
|[1594338](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594338)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594338&view=ms.vss-test-web.build-test-results-tab&runId=44011344&resultId=221926)|dotnet/runtime#133606|
|[1592607](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592607)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592607&view=ms.vss-test-web.build-test-results-tab&runId=43965026&resultId=208245)|dotnet/runtime#133689|
|[1591994](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591994)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591994&view=ms.vss-test-web.build-test-results-tab&runId=43944764&resultId=199263)|dotnet/runtime#132970|
|[1591947](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591947)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591947&view=ms.vss-test-web.build-test-results-tab&runId=43943860&resultId=212966)|dotnet/runtime#133655|
|[1591631](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591631)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591631&view=ms.vss-test-web.build-test-results-tab&runId=43934960&resultId=220098)|dotnet/runtime#133599|
|[1591587](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591587)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591587&view=ms.vss-test-web.build-test-results-tab&runId=43934134&resultId=159820)|dotnet/runtime#131589|
|[1591564](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591564)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591564&view=ms.vss-test-web.build-test-results-tab&runId=43933494&resultId=146625)|dotnet/runtime#133635|
|[1591040](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591040)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591040&view=ms.vss-test-web.build-test-results-tab&runId=43921222&resultId=207893)|dotnet/runtime#133496|
|[1588474](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588474)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588474&view=ms.vss-test-web.build-test-results-tab&runId=43842544&resultId=207567)|dotnet/runtime#131461|
|[1587780](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587780)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587780&view=ms.vss-test-web.build-test-results-tab&runId=43823702&resultId=239533)|dotnet/runtime#133439|
|[1586426](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586426)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586426&view=ms.vss-test-web.build-test-results-tab&runId=43776052&resultId=188252)|dotnet/runtime#132419|
|[1586034](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586034)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586034&view=ms.vss-test-web.build-test-results-tab&runId=43764942&resultId=212016)|dotnet/runtime#133361|
|[1584602](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584602)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584602&view=ms.vss-test-web.build-test-results-tab&runId=43723004&resultId=217349)|dotnet/runtime#133312|
|[1583332](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1583332)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1583332&view=ms.vss-test-web.build-test-results-tab&runId=43686708&resultId=210166)|dotnet/runtime#133115|
|[1582578](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1582578)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1582578&view=ms.vss-test-web.build-test-results-tab&runId=43661286&resultId=224844)|dotnet/runtime#133159|
|[1581573](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1581573)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1581573&view=ms.vss-test-web.build-test-results-tab&runId=43632300&resultId=206027)|dotnet/runtime#133195|
|[1581414](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1581414)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1581414&view=ms.vss-test-web.build-test-results-tab&runId=43628868&resultId=215151)|dotnet/runtime#133111|
|[1580911](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580911)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580911&view=ms.vss-test-web.build-test-results-tab&runId=43614598&resultId=181167)|dotnet/runtime#133134|
|[1580906](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580906)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580906&view=ms.vss-test-web.build-test-results-tab&runId=43613966&resultId=184749)|dotnet/runtime#133164|
|[1580171](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580171)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1580171&view=ms.vss-test-web.build-test-results-tab&runId=43582430&resultId=147963)|dotnet/runtime#132420|
|[1578952](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1578952)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1578952&view=ms.vss-test-web.build-test-results-tab&runId=43545582&resultId=197510)|dotnet/runtime#133042|
|[1578322](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1578322)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1578322&view=ms.vss-test-web.build-test-results-tab&runId=43526106&resultId=232501)|dotnet/runtime#132687|
|[1577761](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1577761)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1577761&view=ms.vss-test-web.build-test-results-tab&runId=43503130&resultId=221316)|dotnet/runtime#132579|
|[1576966](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1576966)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1576966&view=ms.vss-test-web.build-test-results-tab&runId=43487482&resultId=190150)|dotnet/runtime#132827|
|[1575846](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1575846)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1575846&view=ms.vss-test-web.build-test-results-tab&runId=43441024&resultId=227674)|dotnet/runtime#132989|
|[1575548](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1575548)|dotnet/runtime|[System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1575548&view=ms.vss-test-web.build-test-results-tab&runId=43431038&resultId=233265)|dotnet/runtime#131877|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|2|12|28|

Start with the failing SocketsHttpHandler_HttpClientHandlerTest.SendAsync_RequestWithLatin1HeaderValue_Succeeds test in libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs, especially the reported lines around 2251 and 2276. Review the Windows build result and compare the failure with issue 130458. Done means identifying and addressing the cause of the repeated connection-aborted failure, with the test passing on Windows.

Written by the indexing model from the issue text.