Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010

Merged
danmoseley merged 2 commits into
mainfrom
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged

Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom
copilot/fix-large-uri-timeout-error

Conversation

CopilotAI commented Mar 24, 2026•
edited
Loading

Copy link
Copy Markdown
Contributor

SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.

Changes

  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;

This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.

Original prompt

This section details on the original issue you should resolve

<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>
<issue_description>```
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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report

Summary

24-Hour Hit Count7-Day Hit Count1-Month Count
000

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

BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...

⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.

CopilotAI changed the title [WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI requested a review from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service

dotnet-policy-serviceBot commented Mar 24, 2026

Copy link
Copy Markdown
Contributor

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

This was referenced Mar 24, 2026
Open
Closed
@danmoseley
danmoseley marked this pull request as ready for review March 25, 2026 00:57
CopilotAI reviewed Mar 25, 2026
View reviewed changes

CopilotAI left a comment

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview

Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.

Changes:

  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).

@danmoseley
danmoseley merged commit e17cbb5 into mainMar 26, 2026
89 checks passed
@danmoseley
danmoseley deleted the copilot/fix-large-uri-timeout-error branch March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot mentioned this pull request Mar 27, 2026
Merged
@ericstjericstj added needs-breaking-change-doc-created Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet and removed needs-breaking-change-doc-created Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet labels Mar 30, 2026
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley

Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

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

5 participants

@ManickaP@danmoseley@ericstj
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010
Merged
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Conversation
CopilotAI
commented
Mar 24, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.
Changes
  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;
This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.
Original prompt
This section details on the original issue you should resolve
<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>

<issue_description>```

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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report
Summary
24-Hour Hit Count7-Day Hit Count1-Month Count
000
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
BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.
CopilotAI
changed the title
[WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI
requested a review
from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service
dotnet-policy-serviceBot
commented
Mar 24, 2026

Copy link


Copy Markdown

Contributor
Tagging subscribers to this area: @karelz, @dotnet/ncl

See info in area-owners.md if you want to be subscribed.

This was referenced Mar 24, 2026

Open


Closed

@danmoseley
danmoseley
marked this pull request as ready for review
March 25, 2026 00:57
CopilotAI
reviewed
Mar 25, 2026
View reviewed changes
CopilotAI
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview
Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.
Changes:
  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).
@danmoseley
danmoseley
merged commit e17cbb5
into
mainMar 26, 2026

89 checks passed

@danmoseley
danmoseley
deleted the

copilot/fix-large-uri-timeout-error

branch
March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Mar 27, 2026
 Merged

@ericstjericstj
added

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
and removed

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
labels
Mar 30, 2026
@github-actionsgithub-actionsBot
locked and limited conversation to collaborators
Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley
Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

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


5 participants

@ManickaP@danmoseley@ericstj

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010
Merged
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Conversation
CopilotAI
commented
Mar 24, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.
Changes
  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;
This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.
Original prompt
This section details on the original issue you should resolve
<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>

<issue_description>```

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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report
Summary
24-Hour Hit Count7-Day Hit Count1-Month Count
000
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
BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.
CopilotAI
changed the title
[WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI
requested a review
from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service
dotnet-policy-serviceBot
commented
Mar 24, 2026

Copy link


Copy Markdown

Contributor
Tagging subscribers to this area: @karelz, @dotnet/ncl

See info in area-owners.md if you want to be subscribed.

This was referenced Mar 24, 2026

Open


Closed

@danmoseley
danmoseley
marked this pull request as ready for review
March 25, 2026 00:57
CopilotAI
reviewed
Mar 25, 2026
View reviewed changes
CopilotAI
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview
Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.
Changes:
  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).
@danmoseley
danmoseley
merged commit e17cbb5
into
mainMar 26, 2026

89 checks passed

@danmoseley
danmoseley
deleted the

copilot/fix-large-uri-timeout-error

branch
March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Mar 27, 2026
 Merged

@ericstjericstj
added

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
and removed

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
labels
Mar 30, 2026
@github-actionsgithub-actionsBot
locked and limited conversation to collaborators
Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley
Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

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


5 participants

@ManickaP@danmoseley@ericstj

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010
Merged
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Conversation
CopilotAI
commented
Mar 24, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.
Changes
  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;
This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.
Original prompt
This section details on the original issue you should resolve
<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>

<issue_description>```

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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report
Summary
24-Hour Hit Count7-Day Hit Count1-Month Count
000
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
BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.
CopilotAI
changed the title
[WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI
requested a review
from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service
dotnet-policy-serviceBot
commented
Mar 24, 2026

Copy link


Copy Markdown

Contributor
Tagging subscribers to this area: @karelz, @dotnet/ncl

See info in area-owners.md if you want to be subscribed.

This was referenced Mar 24, 2026

Open


Closed

@danmoseley
danmoseley
marked this pull request as ready for review
March 25, 2026 00:57
CopilotAI
reviewed
Mar 25, 2026
View reviewed changes
CopilotAI
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview
Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.
Changes:
  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).
@danmoseley
danmoseley
merged commit e17cbb5
into
mainMar 26, 2026

89 checks passed

@danmoseley
danmoseley
deleted the

copilot/fix-large-uri-timeout-error

branch
March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Mar 27, 2026
 Merged

@ericstjericstj
added

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
and removed

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
labels
Mar 30, 2026
@github-actionsgithub-actionsBot
locked and limited conversation to collaborators
Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley
Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

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


5 participants

@ManickaP@danmoseley@ericstj

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010
Merged
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Conversation
CopilotAI
commented
Mar 24, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.
Changes
  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;
This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.
Original prompt
This section details on the original issue you should resolve
<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>

<issue_description>```

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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report
Summary
24-Hour Hit Count7-Day Hit Count1-Month Count
000
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
BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.
CopilotAI
changed the title
[WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI
requested a review
from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service
dotnet-policy-serviceBot
commented
Mar 24, 2026

Copy link


Copy Markdown

Contributor
Tagging subscribers to this area: @karelz, @dotnet/ncl

See info in area-owners.md if you want to be subscribed.

This was referenced Mar 24, 2026

Open


Closed

@danmoseley
danmoseley
marked this pull request as ready for review
March 25, 2026 00:57
CopilotAI
reviewed
Mar 25, 2026
View reviewed changes
CopilotAI
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview
Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.
Changes:
  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).
@danmoseley
danmoseley
merged commit e17cbb5
into
mainMar 26, 2026

89 checks passed

@danmoseley
danmoseley
deleted the

copilot/fix-large-uri-timeout-error

branch
March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Mar 27, 2026
 Merged

@ericstjericstj
added

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
and removed

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
labels
Mar 30, 2026
@github-actionsgithub-actionsBot
locked and limited conversation to collaborators
Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley
Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

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


5 participants

@ManickaP@danmoseley@ericstj

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010
Merged
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Conversation
CopilotAI
commented
Mar 24, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.
Changes
  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;
This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.
Original prompt
This section details on the original issue you should resolve
<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>

<issue_description>```

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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report
Summary
24-Hour Hit Count7-Day Hit Count1-Month Count
000
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
BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.
CopilotAI
changed the title
[WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI
requested a review
from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service
dotnet-policy-serviceBot
commented
Mar 24, 2026

Copy link


Copy Markdown

Contributor
Tagging subscribers to this area: @karelz, @dotnet/ncl

See info in area-owners.md if you want to be subscribed.

This was referenced Mar 24, 2026

Open


Closed

@danmoseley
danmoseley
marked this pull request as ready for review
March 25, 2026 00:57
CopilotAI
reviewed
Mar 25, 2026
View reviewed changes
CopilotAI
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview
Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.
Changes:
  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).
@danmoseley
danmoseley
merged commit e17cbb5
into
mainMar 26, 2026

89 checks passed

@danmoseley
danmoseley
deleted the

copilot/fix-large-uri-timeout-error

branch
March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Mar 27, 2026
 Merged

@ericstjericstj
added

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
and removed

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
labels
Mar 30, 2026
@github-actionsgithub-actionsBot
locked and limited conversation to collaborators
Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley
Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

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


5 participants

@ManickaP@danmoseley@ericstj

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010
Merged
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Conversation
CopilotAI
commented
Mar 24, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.
Changes
  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;
This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.
Original prompt
This section details on the original issue you should resolve
<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>

<issue_description>```

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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report
Summary
24-Hour Hit Count7-Day Hit Count1-Month Count
000
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
BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.
CopilotAI
changed the title
[WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI
requested a review
from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service
dotnet-policy-serviceBot
commented
Mar 24, 2026

Copy link


Copy Markdown

Contributor
Tagging subscribers to this area: @karelz, @dotnet/ncl

See info in area-owners.md if you want to be subscribed.

This was referenced Mar 24, 2026

Open


Closed

@danmoseley
danmoseley
marked this pull request as ready for review
March 25, 2026 00:57
CopilotAI
reviewed
Mar 25, 2026
View reviewed changes
CopilotAI
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview
Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.
Changes:
  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).
@danmoseley
danmoseley
merged commit e17cbb5
into
mainMar 26, 2026

89 checks passed

@danmoseley
danmoseley
deleted the

copilot/fix-large-uri-timeout-error

branch
March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Mar 27, 2026
 Merged

@ericstjericstj
added

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
and removed

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
labels
Mar 30, 2026
@github-actionsgithub-actionsBot
locked and limited conversation to collaborators
Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley
Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

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


5 participants

@ManickaP@danmoseley@ericstj

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness - #126010
Merged
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Mar 26, 2026
Merged
Reduce LargeUriAndHeaders_Works test size on Android to fix timeout flakiness#126010
danmoseley merged 2 commits into
mainfrom 
copilot/fix-large-uri-timeout-error
Conversation
CopilotAI
commented
Mar 24, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works was consistently timing out on Android because the test allocates 10M-character strings for the path, header name, and header value — too large for Android's HTTP stack within the allotted time.
Changes
  • HttpClientHandlerTest.cs: Added Android-specific branch to the length calculation:
intlength=IsWinHttpHandler?65_000:PlatformDetection.IsAndroid?100_000:10_000_000;
This mirrors the existing WinHTTP size cap pattern and keeps non-Android platforms at the original 10M limit.
Original prompt
This section details on the original issue you should resolve
<issue_title>[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works</issue_title>

<issue_description>```

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: https://github.com/dotnet/runtime/pull/124387
<!-- Error message template -->
## Error Message
Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).
<!-- Use ErrorMessage for String.Contains matches. Use ErrorPattern for regex matches (single line/no backtracking). Set BuildRetry to `true` to retry builds with this error. Set ExcludeConsoleLog to `true` to skip helix logs analysis. -->
```json
{
"ErrorMessage": "[FAIL] System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}

Report
Summary
24-Hour Hit Count7-Day Hit Count1-Month Count
000
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
BuildDefinitionTestPull Request
1317839dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124516
1321007dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124801
1321402dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution
1320129dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#124365
1320101dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125174
1320034dotnet/runtimeSystem.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.LargeUriAndHeaders_Works#124720
1319961dotnet/runtimeSystem.Net.Http.Functional.Tests.WorkItemExecution#125146
1319852dotnet/runtime[System.Net.Http.Functional.Tests.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1319852&view=ms.vss-test-web.build-test-results-tab...
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.
CopilotAI
changed the title
[WIP] Fix timeout error in LargeUriAndHeaders testReduce LargeUriAndHeaders_Works test size on Android to fix timeout flakinessMar 24, 2026
CopilotAI
requested a review
from danmoseleyMarch 24, 2026 03:30
@dotnet-policy-service
dotnet-policy-serviceBot
commented
Mar 24, 2026

Copy link


Copy Markdown

Contributor
Tagging subscribers to this area: @karelz, @dotnet/ncl

See info in area-owners.md if you want to be subscribed.

This was referenced Mar 24, 2026

Open


Closed

@danmoseley
danmoseley
marked this pull request as ready for review
March 25, 2026 00:57
CopilotAI
reviewed
Mar 25, 2026
View reviewed changes
CopilotAI
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Pull request overview
Adjusts the LargeUriAndHeaders_Works functional test to avoid Android timeouts by reducing the size of the generated URI path and header strings on Android, while preserving the existing stress level on other platforms and the WinHTTP-specific cap.
Changes:
  • Add an Android-specific length cap for the test data to reduce runtime/memory pressure on Android.
  • Keep the existing WinHTTP cap (65,000) and the existing non-Android/non-WinHTTP size (10,000,000).
@danmoseley
danmoseley
merged commit e17cbb5
into
mainMar 26, 2026

89 checks passed

@danmoseley
danmoseley
deleted the

copilot/fix-large-uri-timeout-error

branch
March 26, 2026 02:47
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Mar 27, 2026
 Merged

@ericstjericstj
added

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
and removed

needs-breaking-change-doc-created
Breaking changes need an issue opened with https://github.com/dotnet/docs/issues/new?template=dotnet
labels
Mar 30, 2026
@github-actionsgithub-actionsBot
locked and limited conversation to collaborators
Apr 30, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

Copilot code reviewCopilot
Copilot review effort, defaults to Lite
Applies to this pull request for everyone.Learn more about Copilot code review.
Copilot left review comments
@ManickaPManickaPManickaP approved these changes
@danmoseleydanmoseleyAwaiting requested review from danmoseley

Assignees

@danmoseleydanmoseley
Copilot code reviewCopilot

Labels

area-System.Net.Http

Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

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


5 participants

@ManickaP@danmoseley@ericstj