stream: avoid leaking consumers on signal failure - #65299

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nodejs-github-bot merged 1 commit into
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trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
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stream: avoid leaking consumers on signal failure#65299
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trivikr:stream-iter-bc-share-consumer-leak-invalid-signal

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Fixes: #65298

Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.

This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.

Assisted-by: codex:gpt-5.6-sol

@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
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  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 15, 2026
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.

Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️

... and 33 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

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CI: https://ci.nodejs.org/job/node-test-pull-request/75871/

@trivikrtrivikr added the commit-queue PRs queued for automated landing through the Commit Queue. label Aug 16, 2026
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nodejs-github-bot merged commit 977c20e into nodejs:mainAug 17, 2026
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@nodejs-github-botnodejs-github-bot removed the commit-queue PRs queued for automated landing through the Commit Queue. label Aug 17, 2026
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot mentioned this pull request Aug 25, 2026
Merged
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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stream: avoid leaking consumers on signal failure - #65299
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nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
Aug 17, 2026
Merged
stream: avoid leaking consumers on signal failure#65299
nodejs-github-bot merged 1 commit into
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trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
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Aug 15, 2026

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Fixes: #65298
Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.
Assisted-by: codex:gpt-5.6-sol
@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
@nodejs-github-bot
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Review requested:
  •  @nodejs/streams
@nodejs-github-botnodejs-github-bot
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️
... and 33 files with indirect coverage changes
 🚀 New features to boost your workflow: 
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.
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CI: https://ci.nodejs.org/job/node-test-pull-request/75871/
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merged commit 977c20e
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@nodejs-github-botnodejs-github-bot
removed
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label
Aug 17, 2026
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
this pull request
Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals


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@trivikr@nodejs-github-bot@jasnell@jazelly

, '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('^' + ".*" + '

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stream: avoid leaking consumers on signal failure - #65299
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nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
Aug 17, 2026
Merged
stream: avoid leaking consumers on signal failure#65299
nodejs-github-bot merged 1 commit into
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trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
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Fixes: #65298
Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.
Assisted-by: codex:gpt-5.6-sol
@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
@nodejs-github-bot
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Review requested:
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️
... and 33 files with indirect coverage changes
 🚀 New features to boost your workflow: 
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.
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label
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aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
this pull request
Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals


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@trivikr@nodejs-github-bot@jasnell@jazelly

, '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
stream: avoid leaking consumers on signal failure - #65299
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nodejs-github-bot merged 1 commit into
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trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
Aug 17, 2026
Merged
stream: avoid leaking consumers on signal failure#65299
nodejs-github-bot merged 1 commit into
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trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
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Fixes: #65298
Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.
Assisted-by: codex:gpt-5.6-sol
@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️
... and 33 files with indirect coverage changes
 🚀 New features to boost your workflow: 
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.
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@trivikr@aduh95
stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
this pull request
Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals


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@trivikr@nodejs-github-bot@jasnell@jazelly

, '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
stream: avoid leaking consumers on signal failure - #65299
Merged
nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
Aug 17, 2026
Merged
stream: avoid leaking consumers on signal failure#65299
nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
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Aug 15, 2026

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Fixes: #65298
Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.
Assisted-by: codex:gpt-5.6-sol
@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
@nodejs-github-bot
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Review requested:
  •  @nodejs/streams
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️
... and 33 files with indirect coverage changes
 🚀 New features to boost your workflow: 
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.
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CI: https://ci.nodejs.org/job/node-test-pull-request/75871/
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merged commit 977c20e
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nodejs:mainAug 17, 2026

85 of 86 checks passed

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@nodejs-github-botnodejs-github-bot
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commit-queue
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label
Aug 17, 2026
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
this pull request
Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals


4 participants

@trivikr@nodejs-github-bot@jasnell@jazelly

, '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
stream: avoid leaking consumers on signal failure - #65299
Merged
nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
Aug 17, 2026
Merged
stream: avoid leaking consumers on signal failure#65299
nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
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Aug 15, 2026

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Fixes: #65298
Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.
Assisted-by: codex:gpt-5.6-sol
@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
@nodejs-github-bot
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Review requested:
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️
... and 33 files with indirect coverage changes
 🚀 New features to boost your workflow: 
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.
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CI: https://ci.nodejs.org/job/node-test-pull-request/75871/
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merged commit 977c20e
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nodejs:mainAug 17, 2026

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@nodejs-github-botnodejs-github-bot
removed
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commit-queue
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label
Aug 17, 2026
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
this pull request
Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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@jazellyjazellyjazelly approved these changes

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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals


4 participants

@trivikr@nodejs-github-bot@jasnell@jazelly

, '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
stream: avoid leaking consumers on signal failure - #65299
Merged
nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
Aug 17, 2026
Merged
stream: avoid leaking consumers on signal failure#65299
nodejs-github-bot merged 1 commit into
nodejs:mainfrom 
trivikr:stream-iter-bc-share-consumer-leak-invalid-signal
Conversation
@trivikr
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Aug 15, 2026

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Fixes: #65298
Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.
Assisted-by: codex:gpt-5.6-sol
@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️
... and 33 files with indirect coverage changes
 🚀 New features to boost your workflow: 
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.
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stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
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Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals


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, 'i');
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} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
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stream: avoid leaking consumers on signal failure - #65299
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Fixes: #65298
Validate Broadcast.push() and Share.pull() signals before registering raw consumers. Return a rejecting iterable for pre-aborted signals without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors that inflate consumerCount and can permanently impose backpressure.
Assisted-by: codex:gpt-5.6-sol
@trivikr
stream: avoid leaking consumers on signal failure
309218d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
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Review requested:
  •  @nodejs/streams
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 90.32%. Comparing base (4551732) to head (309218d).
⚠️ Report is 20 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #65299 +/- ##
==========================================
+ Coverage 90.30% 90.32% +0.01% 
==========================================
Files 751 751 Lines 250235 250268 +33 Branches 47305 47304 -1 ==========================================
+ Hits 225987 226061 +74 + Misses 15619 15578 -41 
Partials 8629 8629 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.02% <100.00%> (+0.20%)⬆️
lib/internal/streams/iter/share.js85.80% <100.00%> (+0.32%)⬆️
... and 33 files with indirect coverage changes
 🚀 New features to boost your workflow: 
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.
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CI: https://ci.nodejs.org/job/node-test-pull-request/75871/
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@nodejs-github-botnodejs-github-bot
removed
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aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
54d0bf6
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
815424d
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
this pull request
Aug 27, 2026
@trivikr@aduh95
stream: avoid leaking consumers on signal failure
386ed6a
Validate Broadcast.push() and Share.pull() signals before registering
raw consumers. Return a rejecting iterable for pre-aborted signals
without adding a cursor.
This prevents failed subscriptions from leaving unreachable cursors
that inflate consumerCount and can permanently impose backpressure.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65299Fixes: #65298
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jason Zhang <xzha4350@gmail.com>
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stream/iter: Broadcast and Share leak consumers for invalid or pre-aborted signals


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