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  1. Node.js Driver
  2. NODE-3928

Windows: Uncaught exception when connecting to closed port with large minPoolSize

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 4.6.0
    • Affects Version/s: 4.3.1, 4.3.0
    • Component/s: None
    • 2
    • Not Needed

      What problem are you facing?

      The mongodb nodejs driver causes an ungcaught exception crashing the whole process.

      What driver and relevant dependency versions are you using?

      Windows 11, node 16.13.2, mongodb 4.3.1

      Steps to reproduce?

      import { MongoClient } from 'mongodb';

process.on('uncaughtExceptionMonitor', () => console.error('\nUNCAUGHT EXCEPTION, going down in flames...\n'));

try {
    await MongoClient.connect('mongodb://127.0.0.1:24242/', { minPoolSize: 50 });
} catch (err) {
    console.error('Caught mongodb error:', err);
}

      gives

      psh ❯ node .\index.mjs

UNCAUGHT EXCEPTION, going down in flames...

C:\Users\mfischer\src\tests\node-mongo-crash\node_modules\mongodb\lib\cmap\commands.js:368
        this.documents = new Array(this.numberReturned);
                         ^

RangeError: Invalid array length
    at new Response (C:\Users\mfischer\src\tests\node-mongo-crash\node_modules\mongodb\lib\cmap\commands.js:368:26)
    at processIncomingData (C:\Users\mfischer\src\tests\node-mongo-crash\node_modules\mongodb\lib\cmap\message_stream.js:108:32)
    at MessageStream._write (C:\Users\mfischer\src\tests\node-mongo-crash\node_modules\mongodb\lib\cmap\message_stream.js:28:9)
    at writeOrBuffer (node:internal/streams/writable:389:12)
    at _write (node:internal/streams/writable:330:10)
    at MessageStream.Writable.write (node:internal/streams/writable:334:10)
    at Socket.ondata (node:internal/streams/readable:754:22)
    at Socket.emit (node:events:390:28)
    at addChunk (node:internal/streams/readable:315:12)
    at readableAddChunk (node:internal/streams/readable:289:9)

        1. mongo-crash-24242.zip
          2.11 MB

            Assignee:
            durran.jordan@mongodb.com Durran Jordan
            Reporter:
            mika.fischer@zoopnet.de Mika Fischer
            Bailey Pearson
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            Watchers:
            6 Start watching this issue

              Created:
              Updated:
              Resolved: