[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works

[EgorBo]

                 02-16 16:47:52.072 10194 24326 I DOTNET  : 	[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works
                 02-16 16:47:52.072 10194 24326 I DOTNET  : System.TimeoutException : The operation has timed out.
                 02-16 16:47:52.072 10194 24326 I DOTNET  :    at System.Net.Http.Functional.Tests.HttpClientHandlerTest.LargeUriAndHeaders_Works()

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1296274
Build error leg or test failing: System.Net.Http.Functional.Tests.WorkItemExecution
Pull request: #124387

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Report

Summary

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

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1296274
Error message validated: [[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 2/25/2026 7:27:26 AM UTC

Report

Build	Definition	Test	Pull Request
1317839	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124516
1321007	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124801
1321402	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1320129	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124365
1320101	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125174
1320034	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works	#124720
1319961	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125146
1319852	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124966
1319766	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124766
1319483	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1319441	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124674
1319465	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125155
1319420	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125163
1319158	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works	#125089
1319072	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124977
1319209	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125080
1319057	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125091
1319067	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125092
1319139	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125156
1319108	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125090
1318988	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125056
1318869	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124842
1318535	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124994
1318548	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125088
1318341	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125125
1318723	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124940
1318486	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125142
1318611	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#122649
1318669	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#123819
1318532	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125139
1318322	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124701
1318303	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124943
1318108	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125093
1317778	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124904
1317970	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125117
1317888	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125114
1317811	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125073
1317793	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125110
1317655	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124674
1317689	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124994
1317672	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125106
1317144	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124842
1317400	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1317211	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125093
1317133	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125056
1317158	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125091
1317108	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124943
1316932	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124930
1316943	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125079
1316891	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124782
1316872	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124854
1316662	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124804
1316716	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125070
1316720	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124669
1316548	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125065
1316477	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#122649
1316451	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124966
1313476	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124203
1316353	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#121985
1316138	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124880
1316061	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#120326
1316081	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124969
1316047	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124959
1315994	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125046
1315989	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125045
1315445	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125030
1315868	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125039
1315391	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125029
1315466	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1315007	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124959
1314804	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1314633	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124663
1314593	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124943
1314556	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124375
1314477	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125010
1314458	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124915
1314427	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#123819
1314296	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124842
1314307	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1314248	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124940
1314193	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124995
1314142	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1314065	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#125000
1314097	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124997
1313908	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124375
1313899	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124940
1313795	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124991
1313773	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124938
1313778	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124985
1313732	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124933
1313510	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124919
1313459	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124921
1313374	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124944
1313325	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124815
1313178	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124882
1312794	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works	#124850
1313074	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
1313044	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124973
1313105	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#124863
1313071	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution
Displaying 100 of 171 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	171

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1296274
Error message validated: [[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 2/25/2026 7:27:26 AM UTC

[dotnet-policy-service]

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

[ManickaP]

Looks it started on Saturday 14.2. but it seems to be happenning only on android.
cc @MihaZupan

[danmoseley]

Note

This analysis was generated by GitHub Copilot.

Root Cause (likely): The test uses 10MB for the path and headers (length = 10_000_000). On an Android emulator, both the client and loopback server share the same constrained device resources. Allocating, sending, and parsing 10MB headers on an emulator is far slower than on desktop. There's no Android-specific size reduction — only WinHttpHandler gets one (65_000).

The test already has a precedent for platform-specific sizing:

int length = IsWinHttpHandler ? 65_000 : 10_000_000;

Suggested fix — add a similar reduction for Android:

int length = IsWinHttpHandler ? 65_000
           : PlatformDetection.IsAndroid ? 1_000_000
           : 10_000_000;

Using ~1MB still validates "large" headers without choking the emulator. Alternatively, the test could be marked [OuterLoop] on Android or skipped entirely, but reducing the size is the least disruptive and still exercises the code path.

Other observations:

• The test only has [ConditionalFact(...IsNotBrowser)] — no Android exclusion
• The onset (~Feb 14) across many unrelated PRs confirms it's infrastructure/environment, not a code regression
• @ManickaP confirmed it's Android-only; @MihaZupan was cc'd but no follow-up yet

[danmoseley]

@ManickaP OK to get copilot to reduce length for Android as suggested above? (if so feel free to assign or I can)