Can't close MongoDB watch stream

[monad98]

How frequently does the bug occur?

All the time

Description

I can't close the watch stream unless I get at least one change from the stream.
watch.return() only works when the for loop is executed at least once.

Stacktrace & log output

No response

Can you reproduce the bug?

Yes, always

Reproduction Steps

const watch = col.watch({
  filter: {
    operationType: "insert",
  },
});

setTimeout(() => {
  console.log("timed out");
  watch.return();
}, 10 * 1000);

for await (const change of watch) {
  const { fullDocument } = change;
  console.dir(fullDocument);
}

console.log("this is never printed");

I don't insert a document for 10 seconds, then it should run the last console.log, but it doesn't and stuck in for loop.
If I insert one within 10 seconds, it works as expected.

Version

"realm": "11.3.0"

What SDK flavour are you using?

Atlas App Services (auth, functions, etc.)

Are you using encryption?

No, not using encryption

Platform OS and version(s)

Node

Build environment

Which debugger for React Native: ..

Cocoapods version

No response

[kneth]

@monad98 We recently fixed a similar issue in Realm Web (see #4700), and it sounds like it is the same. We need to investigate and possibly port the fix to Realm JS.

[monad98]

@kneth @kraenhansen this fix also works for node. Any plan to apply this to NodeJs version?

@monad98 We recently fixed a similar issue in Realm Web (see #4700), and it sounds like it is the same. We need to investigate and possibly port the fix to Realm JS.

[kneth]

@monad98 Thank you for bringing it up. It should be a relative small fix for node.js, and we should try to get in it soon.