fix: Subscription failure while parsing presence Event (#124)

* handling invalid presence event data in subscription

* PubNub SDK v4.3.4 release.

---------

Co-authored-by: PubNub Release Bot <120067856+pubnub-release-bot@users.noreply.github.com>

.pubnub.yml

@@ -1,5 +1,10 @@
 ---
 changelog:
+  - date: 2024-04-15
+    version: v4.3.4
+    changes:
+      - type: bug
+        text: "Fixes issue of parsing invalid presence data (which are not from pubnub server) in subscription."
   - date: 2024-03-28
     version: v4.3.3
     changes:
@@ -447,7 +452,7 @@ supported-platforms:
     platforms:
       - "Dart SDK >=2.6.0 <3.0.0"
     version: "PubNub Dart SDK"
-version: "4.3.3"
+version: "4.3.4"
 sdks:
   -
     full-name: PubNub Dart SDK

pubnub/CHANGELOG.md

@@ -1,3 +1,9 @@
+## v4.3.4
+April 15 2024
+
+#### Fixed
+- Fixes issue of parsing invalid presence data (which are not from pubnub server) in subscription.
+
 ## v4.3.3
 March 28 2024
 

pubnub/README.md

@@ -14,7 +14,7 @@ To add the package to your Dart or Flutter project, add `pubnub` as a dependency
 
 ```yaml
 dependencies:
-  pubnub: ^4.3.3
+  pubnub: ^4.3.4
 ```
 
 After adding the dependency to `pubspec.yaml`, run the `dart pub get` command in the root directory of your project (the same that the `pubspec.yaml` is in).

pubnub/lib/src/core/core.dart

@@ -21,7 +21,7 @@ class Core {
   /// Internal module responsible for supervising.
   SupervisorModule supervisor = SupervisorModule();
 
-  static String version = '4.3.3';
+  static String version = '4.3.4';
 
   Core(
       {Keyset? defaultKeyset,

pubnub/lib/src/subscribe/subscription.dart

@@ -62,9 +62,10 @@ class Subscription {
   /// Will only emit when [withPresence] is true.
   Stream<PresenceEvent> get presence => _envelopesController.stream
       .where((envelope) =>
-          presenceChannels.contains(envelope.channel) ||
-          presenceChannels.contains(envelope.subscriptionPattern) ||
-          presenceChannelGroups.contains(envelope.subscriptionPattern))
+          envelope.userMeta != null &&
+          (presenceChannels.contains(envelope.channel) ||
+              presenceChannels.contains(envelope.subscriptionPattern) ||
+              presenceChannelGroups.contains(envelope.subscriptionPattern)))
       .map<PresenceEvent>((envelope) => PresenceEvent.fromEnvelope(envelope));
 
   final Completer<void> _cancelCompleter = Completer();

pubnub/pubspec.yaml

@@ -1,6 +1,6 @@
 name: pubnub
 description: PubNub SDK v5 for Dart lang (with Flutter support) that allows you to create real-time applications
-version: 4.3.3
+version: 4.3.4
 homepage: https://www.pubnub.com/docs/sdks/dart
 
 environment: