ResolvedFlutterRealtime

[SOLVED] Realtime Connections in Flutter do not get disposed!

Dec 27, 2023, 19:19

View on Discord

Votes

Replies

Participants

Unknown

Messages

ArrowOriginal post

Rank 3: Container

Sep 14, 2023, 21:55

Hello,
In Flutter, after disposing my listeners, the console still shows the connections, what might be wrong?

Summary

The user was experiencing an issue where realtime connections in Flutter were not getting disposed. The user found a solution, which involved properly closing the realtime subscription using the `realtimeSub?.close();` method. The issue was marked as solved, but the user noted that it may still be a concern if they have a large number of simultaneous users connecting.

Arrow

Rank 3: Container

Sep 14, 2023, 21:57

  @override
  Future<RealtimeSubscription> getDoctorModelRealtimeSubscription(
      DoctorModel value) async {
    final rt = realtime.subscribe([
      'databases.$DatabaseId.collections.$DoctorsCollectionId.documents'
    ]);
    return rt;
  }

....

  StreamSubscription? _sub;

  Future<void> _startRealtimeSubscription() async {
    if (state.documentId.isEmpty || !mounted) return;

    final realtimeSubscription =
        await AsyncValue.guard(() => getDoctorModelRealtimeSubscription(state));

    if (realtimeSubscription is AsyncData<RealtimeSubscription>) {
      _sub = realtimeSubscription.value.stream.listen(_onRealtimeMessage);
    }
  }

 @override
  void dispose() {
    _sub?.cancel();
    super.dispose();
  }

Moderator

Sep 14, 2023, 21:59

Are you using Appwrite cloud?

Arrow

Rank 3: Container

Sep 14, 2023, 21:59

self hosting

Moderator

Sep 14, 2023, 21:59

What version?

Arrow

Rank 3: Container

Sep 14, 2023, 21:59

1.3.7

Moderator

Sep 14, 2023, 21:59

Same version as I'm using 👀

Moderator

Sep 14, 2023, 22:00

I had something similar in flutter. Connection was cancelled but it remained

Arrow

Rank 3: Container

Sep 14, 2023, 22:02

It's a weird behavior, I'm certain of my dispose methods but the connection is still there

Moderator

Sep 14, 2023, 22:08

If you close the app completely it stops?

Arrow

Rank 3: Container

Sep 14, 2023, 22:14

a hot restart resets things yes

Arrow

Rank 3: Container

Sep 14, 2023, 22:17

@D5 have you spent time around this issue?

Arrow

Rank 3: Container

Sep 14, 2023, 22:20

Realtime Connections in Flutter do not get disposed!

Arrow

Rank 3: Container

Sep 14, 2023, 22:30

I just found out thru some experiment that the following solves the issue

Plain text

...
realtimeSub = realtimeSubscription.value;
...
realtimeSub?.close();

Arrow

Rank 3: Container

Sep 14, 2023, 22:30

@D5 see if this can also solve yours.

Moderator

Sep 14, 2023, 22:31

Since up to 40 users connected through web simultaneously (the js app worked without issues) and there was only 1 flutter app user, sincerely I ignored the issue 😆

Moderator

Sep 14, 2023, 22:33

Seems it solves too

Arrow

Rank 3: Container

Sep 14, 2023, 22:34

this one with leaky streams was already in production, I had to find a solution

Arrow

Rank 3: Container

Sep 14, 2023, 22:35

but its fine as long as we dont have a million users simultaneously connecting lol

Moderator

Sep 14, 2023, 22:35

I'm marking this as solved then

Moderator

Sep 14, 2023, 22:35

[SOLVED] Realtime Connections in Flutter do not get disposed!

Join the discussion

Reply to this thread by joining our Discord.

Reply on Discord

Need support?_

Join Discord Get premium support