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SocketException 'Connection reset by peer' causing test failures on android_arm64 and android_x64 #122493

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SocketException 'Connection reset by peer' causing test failures on android_arm64 and android_x64#122493
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Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tabarch-arm64arch-x64area-System.Net.Socketsos-androidtest-failure
Milestone
Future

Description

@matouskozak
matouskozak
opened on Dec 12, 2025
Issue body actions

Note: This issue was automatically generated by AI-Test-Triage. Please review and triage accordingly.

Build Information

Build: 20251211.4, 20251214.1, 20251216.1, 20251216.2, 20260119.4, 20260120.1, 20260120.8, 20260222.1

Build error leg or test failing: System.Net.Sockets.Tests.WorkItemExecution

Affected CI jobs: android_arm64_Release_NativeAOT, android_x64_Release_NativeAOT, build_android_arm64_Release_NativeAOT

Causing Commit Range Information

Commit range: Flaky/Intermittent (no stable transition found)

Summary

  • Test failures caused by System.Net.Sockets.SocketException 'Connection reset by peer' during socket connect
  • Failures occur in System.Net.Sockets.Tests suite on android_arm64_Release_NativeAOT and android_x64_Release_NativeAOT jobs
  • Single test failures with connection reset errors observed in multi-connect and argument validation tests
  • Test processes exit with code 1 indicating failure; one instance includes process killed by OS signal 9
  • No infrastructure timeouts or crashes reported; failures linked to socket connection resets on Android platforms

Failure Statistics

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

  • Occurrence Count: 9
  • First Failure: 2025-12-11 21:00:00 UTC
  • Last Failure: 2026-02-23 07:02:47 UTC

Work Items

Work Item Console Log Build Job Name
System.Net.Sockets.Tests
View Extract
12-11 14:58:53.992 25858 25882 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectSyncForceNonBlocking.MultiConnect_LingerState_Preserved(dnsConnect: True)
12-11 14:58:53.992 25858 25882 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer [::ffff:127.0.0.1]:38615
12-11 14:58:53.992 25858 25882 I DOTNET  :    at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) + 0x238
12-11 14:58:53.992 25858 25882 I DOTNET  :    at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) + 0x150
12-11 14:58:53.992 25858 25882 I DOTNET  :    at System.Net.Sockets.Socket.Connect(IPAddress[] addresses, Int32 port) + 0x114
...
12-11 14:59:01.904  1040  1040 I Zygote  : Process 25858 exited due to signal 9 (Killed)
12-11 14:59:01.810 25858 25882 I DOTNET  : Tests run: 2279, Errors: 0, Failures: 1, Skipped: 28. Time: 13.1907361s
12-11 14:59:01.811 25858 25877 I DOTNET  : MonoRunner finished, return-code=1
Full Log		 20251211.4 android_arm64_Release_NativeAOT
System.Net.Sockets.Tests
View Extract

                 12-11 23:16:37.136  3931  3954 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ArgumentValidation.SelectPoll_InfiniteTimeSpan_Ok
                 12-11 23:16:37.136  3931  3954 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer 127.0.0.1:38893
                 12-11 23:16:37.136  3931  3954 I DOTNET  :    at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) + 0x1f6
                 12-11 23:16:37.136  3931  3954 I DOTNET  :    at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) + 0x149
                 12-11 23:16:37.136  3931  3954 I DOTNET  :    at System.Net.Sockets.Tests.ArgumentValidation.SelectPoll_InfiniteTimeSpan_Ok() + 0x10b
                 12-11 23:16:37.136  3931  3954 I DOTNET  :    at libSystem.Net.Sockets.Tests!<BaseAddress>+0x16209a3

                 12-11 23:17:26.235  3931  3954 I DOTNET  : Tests run: 2279, Errors: 0, Failures: 1, Skipped: 28. Time: 54.1153283s
                 12-11 23:17:26.236  3931  3949 I DOTNET  : MonoRunner finished, return-code=1

                 [23:17:29] fail: Non-success instrumentation exit code: 1, expected: 0
Full Log		 20251211.4 android_x64_Release_NativeAOT
System.Net.Sockets.Tests
View Extract
12-14 02:55:59.926 25223 25254 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectTask.MultiConnect_MiscProperties_Preserved(dnsConnect: False)
12-14 02:55:59.926 25223 25254 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer
12-14 02:55:59.926 25223 25254 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) + 0x40
12-14 02:55:59.926 25223 25254 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) + 0x5c
12-14 02:55:59.926 25223 25254 I DOTNET  :    at System.Net.Sockets.Socket.<<ConnectAsync>g__Core|293_0>d.MoveNext() + 0x208
12-14 02:55:59.926 25223 25254 I DOTNET  : --- End of stack trace from previous location ---
Full Log		 20251214.1 android_arm64_Release_NativeAOT
System.Net.Sockets.Tests
View Extract
                 12-16 14:53:04.999  8860  8884 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectCancellableTask.Connect_ExposeHandle_FirstAttemptSucceeds(connectMode: "dns")
                 12-16 14:53:04.999  8860  8884 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer
                 12-16 14:53:04.999  8860  8884 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) + 0x40
                 12-16 14:53:04.999  8860  8884 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) + 0x5c
                 12-16 14:53:04.999  8860  8884 I DOTNET  :    at System.Threading.Tasks.ValueTask.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state) + 0x7c
                 12-16 14:53:04.999  8860  8884 I DOTNET  : --- End of stack trace from previous location ---
Full Log		 20251216.2 android_arm64_Release_NativeAOT
System.Net.Sockets.Tests
View Extract
                 12-16 02:57:23.136  6942  6969 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectSyncForceNonBlocking.MultiConnect_MiscProperties_Preserved(dnsConnect: True)
                 12-16 02:57:23.136  6942  6969 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer [::ffff:127.0.0.1]:42173
                 12-16 02:57:23.208  6942  6969 I DOTNET  :    at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) + 0x238
                 12-16 02:57:23.208  6942  6969 I DOTNET  :    at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) + 0x150
                 12-16 02:57:23.208  6942  6969 I DOTNET  :    at System.Net.Sockets.Socket.Connect(IPAddress[] addresses, Int32 port) + 0x114
                 12-16 02:57:23.208  6942  6969 I DOTNET  : --- End of stack trace from previous location ---
Full Log		 20251216.1 android_arm64_Release_NativeAOT
System.Net.Sockets.Tests Work Item
View Extract
01-19 14:54:56.526  7273  7300 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectCancellableTask.Connect_ExposeHandle_FirstAttemptSucceeds(connectMode: "single")
01-19 14:54:56.526  7273  7300 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer
01-19 14:54:56.526  7273  7300 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1361
01-19 14:54:56.526  7273  7300 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1277
01-19 14:55:08.547  7273  7300 I DOTNET  : Finished System.Net.Sockets.Tests, Version=11.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
01-19 14:55:08.547  7273  7300 I DOTNET  : Tests run: 2286, Errors: 0, Failures: 1, Skipped: 28. Time: 18.4498171s
01-19 14:55:08.548  7273  7292 I DOTNET  : MonoRunner finished, return-code=1
01-19 14:55:08.681  1040  1040 I Zygote  : Process 7273 exited due to signal 9 (Killed)
INSTRUMENTATION_RESULT: return-code=1
[14:55:11] fail: Non-success instrumentation exit code: 1, expected: 0
XHarness exit code: 1 (TESTS_FAILED)
Full Log		 20260119.4 build_android_arm64_Release_NativeAOT
System.Net.Sockets.Tests Work Item
View Extract
                 01-20 03:01:52.759 18977 19087 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectApm.MultiConnect_LingerState_Preserved(dnsConnect: True)
                 01-20 03:01:52.759 18977 19087 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer
                 01-20 03:01:52.759 18977 19087 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1361
                 01-20 03:01:52.759 18977 19087 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1277
                 01-20 03:02:05.568  1702  1721 V ActivityManager: Got obituary of 18977:net.dot.System.Net.Sockets.Tests
                 01-20 03:02:05.570   984   984 I Zygote  : Process 18977 exited due to signal 9 (Killed)
                 01-20 03:02:05.571  1702  1828 I libprocessgroup: Successfully killed process cgroup uid 12907 pid 18977 in 207ms
[03:02:10] fail: Non-success instrumentation exit code: 1, expected: 0
                 INSTRUMENTATION_RESULT: return-code=1
                 INSTRUMENTATION_CODE: 1
[03:02:10] info: Attempting to remove apk 'net.dot.System.Net.Sockets.Tests'..
Full Log		 20260120.1 build_android_arm64_Release_NativeAOT
System.Net.Sockets.Tests Work Item
View Extract
01-20 15:08:05.718 30874 30902 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectCancellableTask.Connect_ExposeHandle_FirstAttemptSucceeds(connectMode: "dns")
01-20 15:08:05.718 30874 30902 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer
01-20 15:08:05.718 30874 30902 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1361
01-20 15:08:05.718 30874 30902 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1277
01-20 15:08:12.467  1789  2060 I libprocessgroup: Successfully killed process cgroup uid 16576 pid 30874 in 6ms
01-20 15:08:12.609  1087  1087 I Zygote  : Process 30874 exited due to signal 9 (Killed)
[15:08:13] fail: Non-success instrumentation exit code: 1, expected: 0
[15:08:13] info: Attempting to remove apk 'net.dot.System.Net.Sockets.Tests'..
XHarness exit code: 1 (TESTS_FAILED)
INSTRUMENTATION_RESULT: return-code=1
INSTRUMENTATION_CODE: 1
Full Log		 20260120.8 build_android_arm64_Release_NativeAOT
System.Net.Sockets.Tests Work Item
View Extract
02-22 21:00:59.853  2972  3007 I DOTNET  : [FAIL] System.Net.Sockets.Tests.ConnectApm.MultiConnect_LingerState_Preserved(dnsConnect: False)
02-22 21:00:59.853  2972  3007 I DOTNET  : System.Net.Sockets.SocketException : Connection reset by peer
02-22 21:00:59.854  2972  3007 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1365
02-22 21:00:59.854  2972  3007 I DOTNET  :    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) in //src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1281
02-22 21:00:59.854  2972  3007 I DOTNET  :    at System.Net.Sockets.Socket.<<ConnectAsync>g__Core|294_0>d.MoveNext() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 187
...
INSTRUMENTATION_RESULT: return-code=1
INSTRUMENTATION_CODE: 1

[21:01:17] info: Instrumentation finished normally with exit code 1
[21:01:20] info: Wrote current ADB log to D:\h\w\A82D093C\w\A9F2099B\uploads\adb-logcat-net.dot.System.Net.Sockets.Tests-net.dot.MonoRunner.log
[21:01:20] info: Non-success instrumentation exit code: 1, expected: 0
XHarness exit code: 1 (TESTS_FAILED)
Full Log		 20260222.1 build_android_arm64_Release_NativeAOT

Error Message

{
  "ErrorMessage": "System.Net.Sockets.SocketException : Connection reset by peer",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Report

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
0 0 0

Report

Build Repository Test Pull Request
1527700 dotnet/runtime System.Net.Security.Tests.TlsSessionTests.SocketBoundSession_DeferredOptions_MultipleSni_SelectsMatchingCert
1527017 dotnet/runtime System.Net.Security.Tests.TlsSessionTests.SocketBoundSession_HandshakeAndPingPong_Succeeds
1526996 dotnet/runtime System.Net.Security.Tests.TlsSessionTests.SocketBoundSession_DeferredOptions_MultipleSni_SelectsMatchingCert
1526936 dotnet/runtime System.Net.WebSockets.Client.Tests.WorkItemExecution
1526662 dotnet/runtime System.Net.Security.Tests.TlsSessionTests.SocketBoundSession_DeferredOptions_MultipleSni_SelectsMatchingCert
1526281 dotnet/runtime System.Net.WebSockets.Client.Tests.WorkItemExecution
1525751 dotnet/runtime System.Net.Security.Tests.TlsSessionTests.SocketBoundSession_DeferredOptions_MultipleSni_SelectsMatchingCert
3030077 dotnet-runtime System.Net.Security.Tests.WorkItemExecution
1506333 dotnet/runtime System.Net.Sockets.Tests.WorkItemExecution #130622
1499116 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_DangerousAcceptAllCertificatesValidator_Test.InvalidCertificateServers_CertificateValidationDisabled_Succeeds
1499111 dotnet/runtime System.Net.Http.Functional.Tests.HttpClientHandler_RemoteServerTest.GetAsync_SetAutomaticDecompression_ContentDecompressed_Deflate
1498243 dotnet/runtime System.Net.Sockets.Tests.WorkItemExecution #130269
1492589 dotnet/runtime System.Net.Sockets.Tests.WorkItemExecution
1487856 dotnet/runtime System.Net.Sockets.Tests.WorkItemExecution #125437

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
0 8 14
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    Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tabarch-arm64arch-x64area-System.Net.Socketsos-androidtest-failure

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