Goals

I want to be able to call {{Realm.open(

)}} with two different values for the sync.validate_ssl configuration.

Specifically I want to be able to

1. First call with {{Realm.open(
   Unknown macro: { sync}

   )}}

2. Ff the connection fails (I can detect that when the the sync's error callback is fired) I want to re-open the realm with a different configuration {{Realm.open(
   Unknown macro: { sync}

   )}}.

Expected Results

If opening a synchronized Realm on ROS that uses an untrusted certificate I would expect the first call to fail and the second call to succeed.

Actual Results

The second call to Realm.open never resolves (and it actually never gets rejected either).

I suspect that the underlying implementation caches the configuration - probably because its used to open a sync session which is reused. But that is an unexpected and undocumented side-effect from calling Realm.open.

If this is the case - a couple of alternative ways of achieving the goal comes to mind:

1. The Session object used by Realm JS could be invalidated, forgotten (and perhaps closed) - so the next call to Realm.open would instantiate and open a new session. Perhaps by calling Realm.closeSession(), Realm.invalidateSession() or Realm.forgetSession().
2. The call to Realm.open might take a session as an argument instead of the sync config parameters that gets passed to initialize the session.
3. Perhaps opening a Realm should be a function on a session rather than the global Realm object and Realm.open just be a shorthand to open with the default session.

Steps to Reproduce & Code Sample

Start ROS with a self-signed certificate and run the following .js script using node:

async function run() {
  const user = await Realm.Sync.User.login('https://localhost:9443/', 'realm-admin', '');
  const url = 'realms://localhost:9443/__admin';
  // First attempt
  try {
    await Realm.open({
      sync: {
        url,
        user,
        validate_ssl: true,
      }
    });
  } catch (err) {
    console.log(`Expected failure: ${err.message}`);
  }
  // Second attempt
  await Realm.open({
    sync: {
      url,
      user,
      validate_ssl: false,
    }
  });
}

run();

Version of Realm and Tooling

• Realm JS SDK Version: 2.0.2
• Node or React Native: Electron
• Client OS & Version: Mac