fix: close micro race window between connect() resolve and abort listener removal#700
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hanhan761 wants to merge 2 commits into
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fix: close micro race window between connect() resolve and abort listener removal#700hanhan761 wants to merge 2 commits into
hanhan761 wants to merge 2 commits into
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fix: close micro race window between connect() resolve and abort listener removal Add a `connected` flag that is set immediately after `mongoClient.connect()` resolves. The `onAbort` handler now checks this flag before calling `close()`, preventing a late abort from closing an already-connected client during the synchronous window between connect() resolving and removeEventListener firing. Fixes microsoft#644 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> @
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Pull request overview
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Copilot was unable to run its full agentic suite in this review.
Adds a guard in the abort handler to prevent closing an already-connected MongoClient during the brief window between connect() resolving and the abort listener being removed.
Changes:
- Introduce a
connectedflag tracked across the connect call. - Early-return from
onAbortwhenconnectedis true.
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Summary
connectedflag that is set immediately aftermongoClient.connect()resolvesonAborthandler now checks this flag before callingclose(), preventing a late abort from closing an already-connected clientconnect()resolving andremoveEventListenerfiringIssue
Fixes #644
Changes
src/documentdb/ClustersClient.tsconnectedflag; guardonAbortclose with!connectedcheckVerification
connectedflag transitions fromfalsetotrueatomically in the same synchronous tick asconnect()resolvesconnected === false→ close the client (existing behavior preserved)connected === true→ skip close (race window closed)finallyblock still removes the listener for cleanup@