Error [ERR_INTERNAL_ASSERTION] with autoSelectFamily enabled

[marcopdonoso]

Version

Node.js v19.6.0

Platform

Darwin MacBook-Pro-de-Marco.local 22.3.0 Darwin Kernel Version 22.3.0: Thu Jan 5 20:48:54 PST 2023; root:xnu-8792.81.2~2/RELEASE_ARM64_T6000 arm64

Subsystem

No response

What steps will reproduce the bug?

Just connect to the mongod using mongosh, and after a while the console shows the Error maessage and stop the process.

How often does it reproduce? Is there a required condition?

Every time

What is the expected behavior?

Normal using

What do you see instead?

node:internal/assert:14
    throw new ERR_INTERNAL_ASSERTION(message);
    ^

Error [ERR_INTERNAL_ASSERTION]: This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
Please open an issue with this stack trace at https://github.com/nodejs/node/issues

    at new NodeError (node:internal/errors:399:5)
    at assert (node:internal/assert:14:11)
    at internalConnectMultiple (node:net:1070:3)
    at Timeout.internalConnectMultipleTimeout (node:net:1565:3)
    at listOnTimeout (node:internal/timers:570:11)
    at process.processTimers (node:internal/timers:511:7) {
  code: 'ERR_INTERNAL_ASSERTION'
}

Node.js v19.6.0

Additional information

No response

[bnoordhuis]

@addaleax you can probably tell if this is a node bug or something mongosh is doing?

[addaleax]

Fascinating, a mongosh issue here :)

We just enabled calling net.setDefaultAutoSelectFamily?.(true) in the latest release, so that’s what would be causing this to occur now. We don’t do anything out of the ordinary when creating network connections, so I would assume for now that this is a real Node.js bug. I’m not sure if #46587 would affect this.

I couldn’t reproduce this out of the box though, I would imagine there’s more to it than generically “connect to a mongod server”.

---

@marcopdonoso A few things: You most likely installed mongosh through homebrew. If you get the compiled version through https://www.mongodb.com/try/download/shell, that should make this issue go away for you.

Then, can you share more information about what exactly you are doing? A mongosh log file might be a good start (be sure to look through it and redact sensitive information before sharing).

[Bhutania]

I'm encountering a similar issue:

node:internal/assert:14
    throw new ERR_INTERNAL_ASSERTION(message);
    ^

Error [ERR_INTERNAL_ASSERTION]: This is caused by either a bug in Node.js or incorrect usage of Node.js internals.
Please open an issue with this stack trace at https://github.com/nodejs/node/issues

    at new NodeError (node:internal/errors:399:5)
    at assert (node:internal/assert:14:11)
    at internalConnectMultiple (node:net:1070:3)
    at afterConnectMultiple (node:net:1532:5) {
  code: 'ERR_INTERNAL_ASSERTION'
}

Node.js v19.6.0

This exception occurs when the mongosh endpoint isn't available through dns.

dns_failure_redacted_log.txt

When DNS is available (through vpn), I get failures with the string MongoServerSelectionError:

dns_resolved_redacted_log.txt

I haven't tried using the compiled version of mongosh, but I was able to gain access to the cluster using mongodb compass.

[Trott]

Although the stack traces are different, #46670 looks suspiciously similar.

[addaleax]

Yeah, I think there’s a very high chance of these being duplicates, esp. considering that mongosh is also a REPL environment. #46670 has a nice isolated reproduction, though, maybe it’s nicer to keep that one open.

[tniessen]

(Funny, I checked for duplicate issues but this was posted just one minute before I submitted #46670.)

[tniessen]

Refs: #44731

There is also a simpler repro of this issue in #46670.

cc @ShogunPanda

[ShogunPanda]

Yes, I discovered this as well and I was already taking care of it in #46587.

I hope I'll able to land a fix next week!