Revert client.

Author: kinyoklion

packages/event_source_client/CHANGELOG.md

@@ -2,17 +2,6 @@
 
 All notable changes to the LaunchDarkly Event Source Client SDK will be documented in this file. This project adheres to [Semantic Versioning](https://semver.org).
 
-## [2.0.0](https://github.com/launchdarkly/flutter-client-sdk/compare/launchdarkly_event_source_client-v1.2.1...launchdarkly_event_source_client-v2.0.0) (2025-09-03)
-
-
-### ⚠ BREAKING CHANGES
-
-* Add support for getting headers on event source connection. ([#208](https://github.com/launchdarkly/flutter-client-sdk/issues/208))
-
-### Features
-
-* Add support for getting headers on event source connection. ([#208](https://github.com/launchdarkly/flutter-client-sdk/issues/208)) ([9f0b1e4](https://github.com/launchdarkly/flutter-client-sdk/commit/9f0b1e41b238209b60de49a1f05324c2080675fc))
-
 ## [1.2.1](https://github.com/launchdarkly/flutter-client-sdk/compare/launchdarkly_event_source_client-v1.2.0...launchdarkly_event_source_client-v1.2.1) (2025-09-02)
 
 

packages/event_source_client/lib/src/events.dart

@@ -89,3 +89,14 @@ final class OpenEvent implements Event {
           headers!.entries.map((item) => Object.hash(item.key, item.value)))
       : null.hashCode;
 }
+
+bool isMessageEvent(Event event) {
+  {
+    switch (event) {
+      case MessageEvent():
+        return true;
+      default:
+        return false;
+    }
+  }
+}

packages/event_source_client/lib/src/sse_client_http.dart

@@ -4,6 +4,7 @@ import 'dart:math' as math;
 import 'package:http/http.dart' as http;
 
 import '../launchdarkly_event_source_client.dart';
+import 'events.dart' show isMessageEvent;
 import 'state_idle.dart';
 import 'state_value_object.dart';
 

packages/event_source_client/pubspec.yaml

@@ -1,6 +1,6 @@
 name: launchdarkly_event_source_client
 description: Server-sent events (SSE) client implementation for dart and flutter.
-version: 2.0.0
+version: 1.2.1
 homepage: https://github.com/launchdarkly/flutter-client-sdk
 repository: https://github.com/launchdarkly/flutter-client-sdk/tree/main/packages/event_source_client