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System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse: System.TimeoutException #132085

Description

@elinor-fung

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1544854
Build error leg or test failing: System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
Pull request: #131671

System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse [FAIL]
  System.TimeoutException : The operation has timed out.
  Stack Trace:
    /_/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(1584,0): at System.Net.Http.Functional.Tests.DiagnosticsTest.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse()
    --- End of stack trace from previous location ---

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.

{
  "ErrorMessage": ["SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse [FAIL]", "System.TimeoutException"],
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1544854
Error message validated: [SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse [FAIL] System.TimeoutException]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 8/10/2026 5:18:45 PM UTC

Report

Build Repository Test Pull Request
1625044 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #135281
1624641 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #135262
1624088 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #135144
1623874 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #135160
1623811 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134726
1623659 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1623450 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #135210
1622909 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #135177
1621681 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #132584
1620751 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134260
1620717 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1620545 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1620153 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #135049
1619875 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #132861
1619547 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134845
1619076 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1618873 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134494
1617696 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134921
1617576 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134917
1616619 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134835
1616625 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #132584
1616307 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134854
1615080 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134812
1614606 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134792
1613470 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134699
1612970 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134682
1612887 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134675
1612276 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133197
1612096 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134645
1611363 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134548
1610977 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134570
1609942 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134497
1609193 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134497
1608768 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134507
1608542 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133174
1608362 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134306
1608312 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #130463
1608142 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1608111 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134471
1607706 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1606207 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133804
1605985 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134318
1605639 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1605355 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1605092 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134331
1605122 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134333
1604773 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134323
1604513 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134319
1604366 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1604302 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134313
1604117 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1604099 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1603718 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #130079
1603111 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134228
1602441 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1602429 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134178
1602193 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133360
1601144 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1600981 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133773
1600677 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134069
1599834 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133804
1599622 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1599609 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133773
1599408 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134010
1598798 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #134034
1598532 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1596986 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1595682 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #129220
1594905 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133389
1594658 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133819
1594502 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #130050
1594338 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133606
1594314 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1594266 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133793
1593618 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133747
1592920 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1592705 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133696
1592299 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1592119 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133665
1591647 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133637
1591180 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1589610 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1588952 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1588425 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1587854 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse
1586665 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #133394
1586039 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse #131597

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
2 19 87

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    Known Build ErrorUse this to report build issues in the .NET Helix tabarea-System.Net.Httpblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

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