mongoose dosen't throw error when network disconnected

[uuuuuup]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Mongoose version

6.4.0

Node.js version

16.13.1

MongoDB server version

5.0.7

Description

Mongoose dosen't throw error when network is disconnected.
When I call mongoose find function, I can not get error.
So server is stuck forever and can not send response to user.

When I call mongodb find function with the mongoose connection, and I can get below error.
MongoServerSelectionError: connect ECONNREFUSED x,x,x,x:27017
at Timeout._onTimeout

I use nest.js framework for server.

Steps to Reproduce

1. start mongo server
2. start nest.js server
3. nest.js server connect to mongo server
4. stop mongo server
5. I send GET command to nest.js server
6. nest.js server execute find function
7. wait timeout

Expected Behavior

Mongoose should throw error.

[vkarpov15]

Mongoose will throw a MongooseServerSelectionError after serverSelectionTimeoutMS. serverSelectionTimeoutMS is 30000 (30 seconds) by default, which is why it seems like the server is stuck, but it actually isn't.

[uuuuuup]

@vkarpov15

OK, I got error as below.
TypeError: Invalid URL
at new NodeError (node:internal/errors:372:5)
at URL.onParseError (node:internal/url:563:9)
at new URL (node:internal/url:643:5)
at isAtlas (/node_modules/mongoose/lib/helpers/topology/isAtlas.js:17:17)
at MongooseServerSelectionError.assimilateError (/node_modules/mongoose/lib/error/serverSelection.js:35:35)

It can be caught as below.
process.on('uncaughtException', () => {})

But I could not catch with below code.
try {
call.save();
} catch (err) {
console.log(err);
}
Can I catch the error with try / catch?

When I use mongodb api not mongoose api, I could catch the error with try / catch.

[vkarpov15]

try { await call.save(); } catch (err) { ... }