protocol 8. (#134)

* protocol 8.

* add FastConnectOptions.

* update.

* fix.

* Deprecated the top connect method.

* Add fast connect button in example.

* Create a Listener before connecting.

* Force protocol-v7 for deprecated APIs.

* remove commented out line.

* relative path import.

* update.

example/lib/pages/connect.dart

@@ -24,6 +24,7 @@ class _ConnectPageState extends State<ConnectPage> {
   static const _storeKeySimulcast = 'simulcast';
   static const _storeKeyAdaptiveStream = 'adaptive-stream';
   static const _storeKeyDynacast = 'dynacast';
+  static const _storeKeyFastConnect = 'fast-connect';
 
   final _uriCtrl = TextEditingController();
   final _tokenCtrl = TextEditingController();
@@ -31,6 +32,7 @@ class _ConnectPageState extends State<ConnectPage> {
   bool _adaptiveStream = true;
   bool _dynacast = true;
   bool _busy = false;
+  bool _fastConnect = false;
 
   @override
   void initState() {
@@ -58,6 +60,7 @@ class _ConnectPageState extends State<ConnectPage> {
       _simulcast = prefs.getBool(_storeKeySimulcast) ?? true;
       _adaptiveStream = prefs.getBool(_storeKeyAdaptiveStream) ?? true;
       _dynacast = prefs.getBool(_storeKeyDynacast) ?? true;
+      _fastConnect = prefs.getBool(_storeKeyFastConnect) ?? false;
     });
   }
 
@@ -69,6 +72,7 @@ class _ConnectPageState extends State<ConnectPage> {
     await prefs.setBool(_storeKeySimulcast, _simulcast);
     await prefs.setBool(_storeKeyAdaptiveStream, _adaptiveStream);
     await prefs.setBool(_storeKeyDynacast, _dynacast);
+    await prefs.setBool(_storeKeyFastConnect, _fastConnect);
   }
 
   Future<void> _connect(BuildContext ctx) async {
@@ -84,24 +88,36 @@ class _ConnectPageState extends State<ConnectPage> {
       print('Connecting with url: ${_uriCtrl.text}, '
           'token: ${_tokenCtrl.text}...');
 
-      // Try to connect to a room
+      //create new room
+      final room = Room();
+
+      // Create a Listener before connecting
+      final listener = room.createListener();
+
+      // Try to connect to the room
       // This will throw an Exception if it fails for any reason.
-      final room = await LiveKitClient.connect(
+      await room.connect(
         _uriCtrl.text,
         _tokenCtrl.text,
         roomOptions: RoomOptions(
-            adaptiveStream: _adaptiveStream,
-            dynacast: _dynacast,
-            defaultVideoPublishOptions: VideoPublishOptions(
-              simulcast: _simulcast,
-            ),
-            defaultScreenShareCaptureOptions: const ScreenShareCaptureOptions(
-                useiOSBroadcastExtension: true)),
+          adaptiveStream: _adaptiveStream,
+          dynacast: _dynacast,
+          defaultVideoPublishOptions: VideoPublishOptions(
+            simulcast: _simulcast,
+          ),
+          defaultScreenShareCaptureOptions:
+              const ScreenShareCaptureOptions(useiOSBroadcastExtension: true),
+        ),
+        fastConnectOptions: _fastConnect
+            ? FastConnectOptions(
+                microphone: const TrackOption(enabled: true),
+                camera: const TrackOption(enabled: true),
+              )
+            : null,
       );
-
       await Navigator.push<void>(
         ctx,
-        MaterialPageRoute(builder: (_) => RoomPage(room)),
+        MaterialPageRoute(builder: (_) => RoomPage(room, listener)),
       );
     } catch (error) {
       print('Could not connect $error');
@@ -134,6 +150,13 @@ class _ConnectPageState extends State<ConnectPage> {
     });
   }
 
+  void _setFastConnect(bool? value) async {
+    if (value == null || _fastConnect == value) return;
+    setState(() {
+      _fastConnect = value;
+    });
+  }
+
   @override
   Widget build(BuildContext context) => Scaffold(
         body: Container(
@@ -195,6 +218,19 @@ class _ConnectPageState extends State<ConnectPage> {
                       ],
                     ),
                   ),
+                  Padding(
+                    padding: const EdgeInsets.only(bottom: 5),
+                    child: Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        const Text('Fast Connect'),
+                        Switch(
+                          value: _fastConnect,
+                          onChanged: (value) => _setFastConnect(value),
+                        ),
+                      ],
+                    ),
+                  ),
                   Padding(
                     padding: const EdgeInsets.only(bottom: 25),
                     child: Row(

example/lib/pages/room.dart

@@ -11,9 +11,11 @@ import '../widgets/participant.dart';
 class RoomPage extends StatefulWidget {
   //
   final Room room;
+  final EventsListener<RoomEvent> listener;
 
   const RoomPage(
-    this.room, {
+    this.room,
+    this.listener, {
     Key? key,
   }) : super(key: key);
 
@@ -24,16 +26,19 @@ class RoomPage extends StatefulWidget {
 class _RoomPageState extends State<RoomPage> {
   //
   List<Participant> participants = [];
-  late final EventsListener<RoomEvent> _listener = widget.room.createListener();
-
+  EventsListener<RoomEvent> get _listener => widget.listener;
+  bool get fastConnection => widget.room.engine.fastConnectOptions != null;
   @override
   void initState() {
     super.initState();
     widget.room.addListener(_onRoomDidUpdate);
     _setUpListeners();
     _sortParticipants();
-    WidgetsBindingCompatible.instance
-        ?.addPostFrameCallback((_) => _askPublish());
+    WidgetsBindingCompatible.instance?.addPostFrameCallback((_) {
+      if (!fastConnection) {
+        _askPublish();
+      }
+    });
   }
 
   @override