From 046bbb482bd2546ddc8ca41c8db87d22d3167a02 Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 04:34:17 +0900
Subject: [PATCH 1/8] fix imports

---
 example/lib/widgets/controls.dart         | 2 +-
 lib/src/agent/agent.dart                  | 2 +-
 lib/src/agent/chat/message.dart           | 2 +-
 lib/src/core/engine.dart                  | 3 ++-
 lib/src/core/room.dart                    | 3 +--
 lib/src/core/signal_client.dart           | 2 +-
 lib/src/e2ee/e2ee_manager.dart            | 4 +++-
 lib/src/managers/broadcast_manager.dart   | 2 +-
 lib/src/participant/local.dart            | 3 ++-
 lib/src/stats/stats.dart                  | 2 +-
 lib/src/support/disposable.dart           | 4 +++-
 lib/src/support/platform/io.dart          | 2 +-
 lib/src/support/platform/web.dart         | 2 +-
 lib/src/track/local/local.dart            | 2 +-
 lib/src/track/local/video.dart            | 3 ++-
 lib/src/track/track.dart                  | 2 +-
 lib/src/types/transcription_segment.dart  | 2 +-
 lib/src/utils.dart                        | 3 ++-
 lib/src/widgets/screen_select_dialog.dart | 3 ++-
 lib/src/widgets/video_track_renderer.dart | 2 +-
 20 files changed, 29 insertions(+), 21 deletions(-)

diff --git a/example/lib/widgets/controls.dart b/example/lib/widgets/controls.dart
index e022364b7..fbe8c815e 100644
--- a/example/lib/widgets/controls.dart
+++ b/example/lib/widgets/controls.dart
@@ -2,7 +2,7 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:collection/collection.dart';
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/material.dart';
 import 'package:flutter_background/flutter_background.dart';
 import 'package:livekit_client/livekit_client.dart';
diff --git a/lib/src/agent/agent.dart b/lib/src/agent/agent.dart
index 4c2ff5bcd..e230829fb 100644
--- a/lib/src/agent/agent.dart
+++ b/lib/src/agent/agent.dart
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show ChangeNotifier;
 
 import 'package:collection/collection.dart';
 
diff --git a/lib/src/agent/chat/message.dart b/lib/src/agent/chat/message.dart
index b744fee25..0a01a3743 100644
--- a/lib/src/agent/chat/message.dart
+++ b/lib/src/agent/chat/message.dart
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'package:flutter/foundation.dart';
+import 'package:meta/meta.dart';
 
 /// A message received from the agent.
 @immutable
diff --git a/lib/src/core/engine.dart b/lib/src/core/engine.dart
index 37e846570..e667659d2 100644
--- a/lib/src/core/engine.dart
+++ b/lib/src/core/engine.dart
@@ -15,8 +15,9 @@
 // ignore_for_file: deprecated_member_use_from_same_package
 
 import 'dart:async';
+import 'dart:typed_data' show Uint8List;
 
-import 'package:flutter/foundation.dart' hide internal;
+import 'package:flutter/foundation.dart' show kDebugMode, kIsWeb;
 
 import 'package:collection/collection.dart';
 import 'package:connectivity_plus/connectivity_plus.dart';
diff --git a/lib/src/core/room.dart b/lib/src/core/room.dart
index 2508063f8..77ede0fb5 100644
--- a/lib/src/core/room.dart
+++ b/lib/src/core/room.dart
@@ -13,8 +13,7 @@
 // limitations under the License.
 
 import 'dart:async';
-
-import 'package:flutter/foundation.dart' hide internal;
+import 'dart:typed_data' show Uint8List;
 
 import 'package:collection/collection.dart';
 import 'package:http/http.dart' as http;
diff --git a/lib/src/core/signal_client.dart b/lib/src/core/signal_client.dart
index 3145ddfca..47ce08832 100644
--- a/lib/src/core/signal_client.dart
+++ b/lib/src/core/signal_client.dart
@@ -15,7 +15,7 @@
 import 'dart:async';
 import 'dart:collection';
 
-import 'package:flutter/foundation.dart' hide internal;
+import 'package:flutter/foundation.dart' show kIsWeb;
 
 import 'package:connectivity_plus/connectivity_plus.dart';
 import 'package:fixnum/fixnum.dart';
diff --git a/lib/src/e2ee/e2ee_manager.dart b/lib/src/e2ee/e2ee_manager.dart
index b9278d09d..3241a4e81 100644
--- a/lib/src/e2ee/e2ee_manager.dart
+++ b/lib/src/e2ee/e2ee_manager.dart
@@ -12,7 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'package:flutter/foundation.dart';
+import 'dart:typed_data' show Uint8List;
+
+import 'package:flutter/foundation.dart' show kDebugMode, kIsWeb;
 
 import 'package:flutter_webrtc/flutter_webrtc.dart';
 
diff --git a/lib/src/managers/broadcast_manager.dart b/lib/src/managers/broadcast_manager.dart
index 8d92bb3d1..e42e8eea4 100644
--- a/lib/src/managers/broadcast_manager.dart
+++ b/lib/src/managers/broadcast_manager.dart
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'package:flutter/foundation.dart' hide internal;
+import 'package:flutter/foundation.dart' show ChangeNotifier;
 
 import 'package:meta/meta.dart';
 
diff --git a/lib/src/participant/local.dart b/lib/src/participant/local.dart
index 62978adcb..432c7883f 100644
--- a/lib/src/participant/local.dart
+++ b/lib/src/participant/local.dart
@@ -17,8 +17,9 @@
 import 'dart:async';
 import 'dart:io';
 import 'dart:math';
+import 'dart:typed_data' show Uint8List;
 
-import 'package:flutter/foundation.dart' hide internal;
+import 'package:flutter/foundation.dart' show kIsWeb;
 
 import 'package:async/async.dart';
 import 'package:fixnum/fixnum.dart';
diff --git a/lib/src/stats/stats.dart b/lib/src/stats/stats.dart
index a38898467..f75d9ac58 100644
--- a/lib/src/stats/stats.dart
+++ b/lib/src/stats/stats.dart
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show kIsWeb;
 
 import 'audio_source_stats.dart';
 
diff --git a/lib/src/support/disposable.dart b/lib/src/support/disposable.dart
index 5d1ebeb5e..70d77015e 100644
--- a/lib/src/support/disposable.dart
+++ b/lib/src/support/disposable.dart
@@ -14,7 +14,9 @@
 
 import 'dart:async';
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show ChangeNotifier, VoidCallback;
+
+import 'package:meta/meta.dart';
 
 import '../extensions.dart';
 import '../logger.dart';
diff --git a/lib/src/support/platform/io.dart b/lib/src/support/platform/io.dart
index 2a2afa556..af31ba351 100644
--- a/lib/src/support/platform/io.dart
+++ b/lib/src/support/platform/io.dart
@@ -14,7 +14,7 @@
 
 import 'dart:io';
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show kIsWeb, kIsWasm;
 
 import '../platform.dart';
 
diff --git a/lib/src/support/platform/web.dart b/lib/src/support/platform/web.dart
index f5316dfa0..7fa7f774b 100644
--- a/lib/src/support/platform/web.dart
+++ b/lib/src/support/platform/web.dart
@@ -15,7 +15,7 @@
 import 'dart:js_interop';
 import 'dart:js_interop_unsafe';
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show defaultTargetPlatform, TargetPlatform;
 
 import 'package:web/web.dart' as web;
 
diff --git a/lib/src/track/local/local.dart b/lib/src/track/local/local.dart
index 981b0717d..2ce82883b 100644
--- a/lib/src/track/local/local.dart
+++ b/lib/src/track/local/local.dart
@@ -14,7 +14,7 @@
 
 import 'dart:async';
 
-import 'package:flutter/foundation.dart' hide internal;
+import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/material.dart';
 
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
diff --git a/lib/src/track/local/video.dart b/lib/src/track/local/video.dart
index 9b8e66b28..b16388895 100644
--- a/lib/src/track/local/video.dart
+++ b/lib/src/track/local/video.dart
@@ -12,10 +12,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show kIsWeb;
 
 import 'package:collection/collection.dart';
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
+import 'package:meta/meta.dart';
 
 import '../../events.dart';
 import '../../exceptions.dart';
diff --git a/lib/src/track/track.dart b/lib/src/track/track.dart
index 3c0f09170..92dffc66e 100644
--- a/lib/src/track/track.dart
+++ b/lib/src/track/track.dart
@@ -14,7 +14,7 @@
 
 import 'dart:async';
 
-import 'package:flutter/foundation.dart' hide internal;
+import 'package:flutter/foundation.dart' show kIsWeb;
 
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
 import 'package:meta/meta.dart';
diff --git a/lib/src/types/transcription_segment.dart b/lib/src/types/transcription_segment.dart
index 37d61aded..0b2b5d0f0 100644
--- a/lib/src/types/transcription_segment.dart
+++ b/lib/src/types/transcription_segment.dart
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'package:flutter/foundation.dart';
+import 'package:meta/meta.dart';
 
 @immutable
 class TranscriptionSegment {
diff --git a/lib/src/utils.dart b/lib/src/utils.dart
index d242e6d90..aa8259ea3 100644
--- a/lib/src/utils.dart
+++ b/lib/src/utils.dart
@@ -15,8 +15,9 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:math' as math;
+import 'dart:typed_data' show Uint8List;
 
-import 'package:flutter/foundation.dart' hide internal;
+import 'package:flutter/foundation.dart' show kIsWeb, defaultTargetPlatform;
 
 import 'package:collection/collection.dart';
 import 'package:connectivity_plus/connectivity_plus.dart';
diff --git a/lib/src/widgets/screen_select_dialog.dart b/lib/src/widgets/screen_select_dialog.dart
index 16af8b34b..69a69136a 100644
--- a/lib/src/widgets/screen_select_dialog.dart
+++ b/lib/src/widgets/screen_select_dialog.dart
@@ -13,8 +13,9 @@
 // limitations under the License.
 
 import 'dart:async';
+import 'dart:typed_data' show Uint8List;
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show kDebugMode;
 import 'package:flutter/material.dart';
 
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
diff --git a/lib/src/widgets/video_track_renderer.dart b/lib/src/widgets/video_track_renderer.dart
index 06f8817bd..95b683bce 100644
--- a/lib/src/widgets/video_track_renderer.dart
+++ b/lib/src/widgets/video_track_renderer.dart
@@ -15,7 +15,7 @@
 import 'dart:async';
 import 'dart:math';
 
-import 'package:flutter/foundation.dart';
+import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/material.dart';
 
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;

From 60f04f78a619305a48d6d3023095cfaa6d0652ab Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 04:39:18 +0900
Subject: [PATCH 2/8] Create fix-imports

---
 .changes/fix-imports | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 .changes/fix-imports

diff --git a/.changes/fix-imports b/.changes/fix-imports
new file mode 100644
index 000000000..929483765
--- /dev/null
+++ b/.changes/fix-imports
@@ -0,0 +1 @@
+patch type="fixed" "Use explicit show clauses for foundation imports"

From 35d61e4f37d784cf59ebed02fe9575165e976988 Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 04:54:47 +0900
Subject: [PATCH 3/8] v13

---
 lib/src/core/engine.dart | 7 +++++++
 lib/src/extensions.dart  | 1 +
 lib/src/options.dart     | 2 +-
 lib/src/types/other.dart | 1 +
 4 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/src/core/engine.dart b/lib/src/core/engine.dart
index e667659d2..8a6848f22 100644
--- a/lib/src/core/engine.dart
+++ b/lib/src/core/engine.dart
@@ -1372,9 +1372,16 @@ class Engine extends Disposable with EventsEmittable<EngineEvent> {
           await handleReconnect(ClientDisconnectReason.leaveReconnect);
           break;
         case lk_rtc.LeaveRequest_Action.RESUME:
+          fullReconnectOnNext = false;
           // reconnect immediately instead of waiting for next attempt
           await handleReconnect(ClientDisconnectReason.leaveReconnect);
+          break;
         default:
+          // Fallback for protocol version < 13: check canReconnect field
+          if (event.canReconnect) {
+            fullReconnectOnNext = true;
+            await handleReconnect(ClientDisconnectReason.leaveReconnect);
+          }
           break;
       }
     });
diff --git a/lib/src/extensions.dart b/lib/src/extensions.dart
index d919da94b..a5d43d7f3 100644
--- a/lib/src/extensions.dart
+++ b/lib/src/extensions.dart
@@ -66,6 +66,7 @@ extension ProtocolVersionExt on ProtocolVersion {
         ProtocolVersion.v10: '10',
         ProtocolVersion.v11: '11',
         ProtocolVersion.v12: '12',
+        ProtocolVersion.v13: '13',
       }[this]!;
 }
 
diff --git a/lib/src/options.dart b/lib/src/options.dart
index af31ce5fd..a18f53a60 100644
--- a/lib/src/options.dart
+++ b/lib/src/options.dart
@@ -64,7 +64,7 @@ class ConnectOptions {
   const ConnectOptions({
     this.autoSubscribe = true,
     this.rtcConfiguration = const RTCConfiguration(),
-    this.protocolVersion = ProtocolVersion.v12,
+    this.protocolVersion = ProtocolVersion.v13,
     this.timeouts = Timeouts.defaultTimeouts,
   });
 }
diff --git a/lib/src/types/other.dart b/lib/src/types/other.dart
index 46f39b07b..35e1cd13d 100644
--- a/lib/src/types/other.dart
+++ b/lib/src/types/other.dart
@@ -35,6 +35,7 @@ enum ProtocolVersion {
   v10,
   v11,
   v12,
+  v13, // Regions in leave request, canReconnect obsoleted by action
 }
 
 /// Connection state type used throughout the SDK.

From 3c724efa7010ec68e89cfc4efbc162453fd4d9f9 Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 14:32:03 +0900
Subject: [PATCH 4/8] update leave request

---
 lib/src/core/signal_client.dart | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/src/core/signal_client.dart b/lib/src/core/signal_client.dart
index 47ce08832..388b40964 100644
--- a/lib/src/core/signal_client.dart
+++ b/lib/src/core/signal_client.dart
@@ -199,7 +199,11 @@ class SignalClient extends Disposable with EventsEmittable<SignalEvent> {
 
   Future<void> sendLeave() async {
     _sendRequest(lk_rtc.SignalRequest(
-        leave: lk_rtc.LeaveRequest(canReconnect: false, reason: lk_models.DisconnectReason.CLIENT_INITIATED)));
+        leave: lk_rtc.LeaveRequest(
+      reason: lk_models.DisconnectReason.CLIENT_INITIATED,
+      // server doesn't process this field, keeping it here to indicate the intent of a full disconnect
+      action: lk_rtc.LeaveRequest_Action.DISCONNECT,
+    )));
   }
 
   // resets internal state to a re-usable state

From d18d855417ae000b1bc191ac42a6cb88a016ffaf Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 14:52:59 +0900
Subject: [PATCH 5/8] update leave action

---
 lib/src/core/engine.dart | 47 ++++++++++++++++------------------------
 1 file changed, 19 insertions(+), 28 deletions(-)

diff --git a/lib/src/core/engine.dart b/lib/src/core/engine.dart
index 8a6848f22..8271c049c 100644
--- a/lib/src/core/engine.dart
+++ b/lib/src/core/engine.dart
@@ -1355,34 +1355,25 @@ class Engine extends Disposable with EventsEmittable<EngineEvent> {
         logger.fine('updating regions');
         _regionUrlProvider?.setServerReportedRegions(event.regions!);
       }
-      switch (event.action) {
-        case lk_rtc.LeaveRequest_Action.DISCONNECT:
-          if (connectionState == ConnectionState.reconnecting) {
-            logger.warning('[Signal] Received Leave while engine is reconnecting, ignoring...');
-            return;
-          }
-          await signalClient.cleanUp();
-          fullReconnectOnNext = false;
-          await disconnect();
-          events.emit(EngineDisconnectedEvent(reason: event.reason.toSDKType()));
-          break;
-        case lk_rtc.LeaveRequest_Action.RECONNECT:
-          fullReconnectOnNext = true;
-          // reconnect immediately instead of waiting for next attempt
-          await handleReconnect(ClientDisconnectReason.leaveReconnect);
-          break;
-        case lk_rtc.LeaveRequest_Action.RESUME:
-          fullReconnectOnNext = false;
-          // reconnect immediately instead of waiting for next attempt
-          await handleReconnect(ClientDisconnectReason.leaveReconnect);
-          break;
-        default:
-          // Fallback for protocol version < 13: check canReconnect field
-          if (event.canReconnect) {
-            fullReconnectOnNext = true;
-            await handleReconnect(ClientDisconnectReason.leaveReconnect);
-          }
-          break;
+      if (event.action == lk_rtc.LeaveRequest_Action.RESUME) {
+        fullReconnectOnNext = false;
+        // reconnect immediately instead of waiting for next attempt
+        await handleReconnect(ClientDisconnectReason.leaveReconnect);
+      } else if (event.action == lk_rtc.LeaveRequest_Action.RECONNECT ||
+          // canReconnect is deprecated in protocol version >= 13
+          event.canReconnect) {
+        fullReconnectOnNext = true;
+        // reconnect immediately instead of waiting for next attempt
+        await handleReconnect(ClientDisconnectReason.leaveReconnect);
+      } else {
+        if (connectionState == ConnectionState.reconnecting) {
+          logger.warning('[Signal] Received Leave while engine is reconnecting, ignoring...');
+          return;
+        }
+        await signalClient.cleanUp();
+        fullReconnectOnNext = false;
+        await disconnect();
+        events.emit(EngineDisconnectedEvent(reason: event.reason.toSDKType()));
       }
     });
 

From 6f50e9f8ab004587ab9f985e6758cbdcfd523825 Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 14:54:04 +0900
Subject: [PATCH 6/8] changes

---
 .changes/protocol-v13 | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 .changes/protocol-v13

diff --git a/.changes/protocol-v13 b/.changes/protocol-v13
new file mode 100644
index 000000000..3f973f1d9
--- /dev/null
+++ b/.changes/protocol-v13
@@ -0,0 +1 @@
+minor type="feature" "Support protocol v13 with LeaveRequest action"

From 2e066c945066ae386f28762aa61f02bf0f631e8c Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 17:59:20 +0900
Subject: [PATCH 7/8] comments and log

---
 lib/src/core/engine.dart | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/src/core/engine.dart b/lib/src/core/engine.dart
index 8271c049c..3babe5123 100644
--- a/lib/src/core/engine.dart
+++ b/lib/src/core/engine.dart
@@ -1351,21 +1351,25 @@ class Engine extends Disposable with EventsEmittable<EngineEvent> {
       token = event.token;
     })
     ..on<SignalLeaveEvent>((event) async {
+      logger.fine('[Signal] Leave received, action: ${event.action}, reason: ${event.reason}');
       if (event.regions != null && _regionUrlProvider != null) {
         logger.fine('updating regions');
         _regionUrlProvider?.setServerReportedRegions(event.regions!);
       }
+      // Protocol v13: LeaveRequest.action replaces the deprecated canReconnect boolean.
+      // canReconnect is still checked for backward compatibility with v12 servers
+      // (where action defaults to DISCONNECT=0 since it's unset).
       if (event.action == lk_rtc.LeaveRequest_Action.RESUME) {
         fullReconnectOnNext = false;
         // reconnect immediately instead of waiting for next attempt
         await handleReconnect(ClientDisconnectReason.leaveReconnect);
       } else if (event.action == lk_rtc.LeaveRequest_Action.RECONNECT ||
-          // canReconnect is deprecated in protocol version >= 13
           event.canReconnect) {
         fullReconnectOnNext = true;
         // reconnect immediately instead of waiting for next attempt
         await handleReconnect(ClientDisconnectReason.leaveReconnect);
       } else {
+        // DISCONNECT or v12 server with canReconnect=false
         if (connectionState == ConnectionState.reconnecting) {
           logger.warning('[Signal] Received Leave while engine is reconnecting, ignoring...');
           return;

From 5f42b4985ea9e1c23435b23cc3c15b473695ca14 Mon Sep 17 00:00:00 2001
From: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>
Date: Fri, 6 Feb 2026 18:01:04 +0900
Subject: [PATCH 8/8] format

---
 lib/src/core/engine.dart | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/src/core/engine.dart b/lib/src/core/engine.dart
index 3babe5123..570e3101e 100644
--- a/lib/src/core/engine.dart
+++ b/lib/src/core/engine.dart
@@ -1363,8 +1363,7 @@ class Engine extends Disposable with EventsEmittable<EngineEvent> {
         fullReconnectOnNext = false;
         // reconnect immediately instead of waiting for next attempt
         await handleReconnect(ClientDisconnectReason.leaveReconnect);
-      } else if (event.action == lk_rtc.LeaveRequest_Action.RECONNECT ||
-          event.canReconnect) {
+      } else if (event.action == lk_rtc.LeaveRequest_Action.RECONNECT || event.canReconnect) {
         fullReconnectOnNext = true;
         // reconnect immediately instead of waiting for next attempt
         await handleReconnect(ClientDisconnectReason.leaveReconnect);