BREAKING CHANGE: Update API for connection, communication channel state and is browser value (#14)

* refactor(lib, example, example_full): use streams for communication channel and is ios browser

* feat: add abstract toJson() to message

* refactor: add deprecations for nearby_service

* feat(example): update main.dart

* feat(nearby_service): add comments

* feat(nearby_service_platform_interface): add deprecation to getConnectedDeviceStream

* feat(nearby_service/message): add concrete implementation for toJson()

* feat(nearby_service/android): add deprecations

* fix(nearby_service/android): reset check for android device

* fix(nearby_service/ios): change ios service to deprecations variant

* chore(nearby_service): edit deprecation messages

* chore: update gitignore

* doc: add CONTRIBUTING file

* doc: update CONTRIBUTING file

* chore: update CONTRIBUTING.md

* chore: update CONTRIBUTING.md

* chore: version 0.1.0

* fix(example_full): move startListeningCommunicationChannelState() upper

.gitignore

@@ -35,3 +35,4 @@ build/
 
 # FVM Version Cache
 .fvm/
+playground/*

CHANGELOG.md

@@ -1,3 +1,17 @@
+## 0.1.0
+
+**!! BREAKING CHANGES !!**
+
+- Method `connect()` is **deprecated**. Added `connectById()` method instead
+- Method `disconnect()` is **deprecated**. Added `disconnectById()` method instead
+- Getter `communicationChannelState` is **deprecated**. Added `getCommunicationChannelStateStream()` method
+  and `communicationChannelStateValue` getter instead
+- Getter `isBrowser` is **deprecated**. Added `getIsBrowserStream()` method and `isBrowserValue` getter instead
+- Added `toJson()` method to `NearbyMessage` class and its subclasses
+
+More information about the deprecated API here: https://github.com/ksenia312/nearby_service/pull/14.
+In the next versions, the deprecated API will be removed.
+
 ## 0.0.9
 
 - Add initialization checks for Android and IOS

CONTRIBUTING.md

@@ -0,0 +1,61 @@
+[![Xenikii Website](https://img.shields.io/badge/-xenikii.one-313866?style=for-the-badge&logoColor=white)](https://xenikii.one)
+[![LICENSE BSD](https://img.shields.io/badge/License-BSD-504099?style=for-the-badge)](https://github.com/ksenia312/nearby_service/blob/main/LICENSE)
+[![Pub package](https://img.shields.io/pub/v/nearby_service.svg?style=for-the-badge&color=974EC3)](https://pub.dev/packages/nearby_service)
+[![Pub Likes](https://img.shields.io/pub/likes/nearby_service?style=for-the-badge&color=FE7BE5)](https://pub.dev/packages/nearby_service)
+
+## Contributing to Nearby Service
+
+Thank you for considering contributing to the Nearby Service package! Please follow the guidelines below based on your
+use case.
+
+#### Reporting a bug
+
+If you have found a bug, please follow these steps:
+
+1. **Search for existing issues**: Before opening a new issue, please check
+   the [Issues](https://github.com/ksenia312/nearby_service/issues) to see if the bug has already been reported.
+2. **Open a new Bug Report issue**: If the bug has not been reported yet, open a new
+   issue [here](https://github.com/ksenia312/nearby_service/issues/new/choose) and use template `Bug Report` to indicate
+   that this is a bug report.
+3. **Provide details**: Include a clear and concise description of the bug, steps to reproduce it, and any relevant logs
+   or screenshots.
+
+#### Suggesting an improvement or feature
+
+If you have an idea for an improvement or a new feature, follow these steps:
+
+1. **Search for existing issues**: Check the [Issues](https://github.com/ksenia312/nearby_service/issues) to see if your
+   suggestion has already been made.
+2. **Open a new Feature Request issue**: If not, open a new
+   issue [here](https://github.com/ksenia312/nearby_service/issues/new/choose) and use
+   template `Feature Request` to indicate that this is a suggestion for improvement.
+3. **Describe your suggestion**: Provide a detailed description of the improvement or feature, including potential use
+   cases and any other relevant information.
+
+#### Submitting a bug fix or improvement
+
+If you have created a fix for a bug or an improvement, please follow these steps:
+
+1. **Search for existing issues**: Ensure the issue has not already been fixed or the improvement has not been
+   implemented by checking the [Issues](https://github.com/ksenia312/nearby_service/issues).
+2. **Fork the repository**: Fork the [Nearby Service repository](https://github.com/ksenia312/nearby_service) to your
+   own GitHub account.
+3. **Create a new branch**: In your forked repository, create a new branch for your fix or improvement.
+4. **Implement your fix or improvement**: Make your changes in the new branch.
+5. **Open a Pull Request**: Once your changes are complete, open a Pull Request (PR) from your forked repository’s
+   branch to the `main` branch of the original repository.
+6. **Fill in the PR template**: In your PR, fill in the PR template with the appropriate information.
+
+#### Asking a question about nearby_service or source code
+
+If you have a question about how to use Nearby Service or about the source code, please follow these steps:
+
+1. **Search for existing questions**: Check the [Issues](https://github.com/ksenia312/nearby_service/issues) to see if
+   your question has already been answered.
+2. **Open a new Question issue**: If your question has not been addressed, open a new
+   issue [here](https://github.com/ksenia312/nearby_service/issues/new/choose) and use one of `Question` templates to
+   indicate that this is a question.
+3. **Describe your question**: Clearly state your question and provide any necessary context.
+
+---
+Your effort is appreciated 💗

example/lib/main.dart

@@ -60,7 +60,7 @@ class _AppBodyState extends State<AppBody> {
   late final _nearbyService = NearbyService.getInstance(
     /// Define log level here
     logLevel: NearbyServiceLogLevel.debug,
-  )..communicationChannelState.addListener(() => setState(() {}));
+  );
 
   AppState _state = AppState.idle;
 
@@ -70,9 +70,11 @@ class _AppBodyState extends State<AppBody> {
   /// List of discovered devices
   List<NearbyDevice> _peers = [];
   StreamSubscription? _peersSubscription;
+  CommunicationChannelState _communicationChannelState =
+      CommunicationChannelState.notConnected;
 
   /// Temporary solution to check the connection,
-  /// use [NearbyService.getConnectedDeviceStream] for this purpose
+  /// use [NearbyService.getConnectedDeviceStreamById] for this purpose
   /// in your application
   Timer? _connectionCheckTimer;
   NearbyDevice? _connectedDevice;
@@ -158,10 +160,6 @@ class _AppBodyState extends State<AppBody> {
     return Container();
   }
 
-  CommunicationChannelState get _communicationChannelState {
-    return _nearbyService.communicationChannelState.value;
-  }
-
   Future<void> _initialize() async {
     await _nearbyService.initialize();
   }
@@ -204,7 +202,7 @@ class _AppBodyState extends State<AppBody> {
   Future<void> _connect(NearbyDevice device) async {
     // Be careful with already connected devices,
     // double connection may be unnecessary
-    final result = await _nearbyService.connect(device);
+    final result = await _nearbyService.connectById(device.info.id);
     if (result || device.status.isConnected) {
       final channelStarting = _tryCommunicate(device);
       if (!channelStarting) {
@@ -240,8 +238,14 @@ class _AppBodyState extends State<AppBody> {
   }
 
   void _startCommunicationChannel(NearbyDevice device) {
-    if (!_communicationChannelState.isNotConnected) return;
+    if (_communicationChannelState != CommunicationChannelState.notConnected) {
-
+      // channel is loading or already connected
+      return;
+    }
+    // start listening communication channel state
+    _nearbyService.getCommunicationChannelStateStream().listen((event) {
+      _communicationChannelState = event;
+    });
     _nearbyService.startCommunicationChannel(
       NearbyCommunicationChannelData(
         device.info.id,
@@ -275,7 +279,7 @@ class _AppBodyState extends State<AppBody> {
 
   Future<void> _disconnect() async {
     try {
-      await _nearbyService.disconnect(_connectedDevice!);
+      await _nearbyService.disconnectById(_connectedDevice!.info.id);
     } finally {
       await _nearbyService.endCommunicationChannel();
       await _nearbyService.stopDiscovery();

example_full/lib/domain/app_service.dart

@@ -8,14 +8,16 @@ import 'package:nearby_service_example_full/utils/files_saver.dart';
 import 'app_state.dart';
 
 class AppService extends ChangeNotifier {
-  late final _nearbyService = NearbyService.getInstance()
+  late final _nearbyService = NearbyService.getInstance();
-    ..communicationChannelState.addListener(notifyListeners);
 
   AppState state = AppState.idle;
   List<NearbyDevice>? peers;
   NearbyDevice? connectedDevice;
   NearbyDeviceInfo? currentDeviceInfo;
   NearbyConnectionAndroidInfo? _connectionAndroidInfo;
+  CommunicationChannelState _communicationChannelState =
+      CommunicationChannelState.notConnected;
+  bool _isIOSBrowser = true;
 
   String platformVersion = 'Unknown';
   String platformModel = 'Unknown';
@@ -47,6 +49,10 @@ class AppService extends ChangeNotifier {
       await _nearbyService.initialize(
         data: NearbyInitializeData(iosDeviceName: iosDeviceName),
       );
+      _nearbyService.ios?.getIsBrowserStream().listen((event) {
+        _isIOSBrowser = event;
+      });
+      startListeningCommunicationChannelState();
       updateState(
         Platform.isAndroid ? AppState.permissions : AppState.selectClientType,
       );
@@ -152,7 +158,7 @@ class AppService extends ChangeNotifier {
 
   Future<void> connect(NearbyDevice device) async {
     try {
-      await _nearbyService.connect(device);
+      await _nearbyService.connectById(device.info.id);
     } on NearbyServiceBusyException catch (_) {
       _logBusyException();
     } catch (e, s) {
@@ -163,7 +169,7 @@ class AppService extends ChangeNotifier {
 
   Future<void> disconnect([NearbyDevice? device]) async {
     try {
-      await _nearbyService.disconnect(device);
+      await _nearbyService.disconnectById(device?.info.id);
     } on NearbyServiceBusyException catch (_) {
       _logBusyException();
     } catch (e, s) {
@@ -204,12 +210,11 @@ class AppService extends ChangeNotifier {
 }
 
 extension GettersExtension on AppService {
-  CommunicationChannelState get communicationChannelState {
+  CommunicationChannelState get communicationChannelState =>
-    return _nearbyService.communicationChannelState.value;
+      _communicationChannelState;
-  }
 
   bool get isIOSBrowser {
-    return _nearbyService.ios?.isBrowser.value ?? false;
+    return _isIOSBrowser;
   }
 
   bool? get isAndroidGroupOwner {
@@ -233,6 +238,21 @@ extension ConnectionInfoExtension on AppService {
     _notify();
   }
 
+  void startListeningCommunicationChannelState() {
+    try {
+      _connectionInfoSubscription =
+          _nearbyService.getCommunicationChannelStateStream().listen(
+        (event) async {
+          _communicationChannelState = event;
+          _notify();
+        },
+      );
+    } catch (e, s) {
+      _log(e, s);
+    }
+    _notify();
+  }
+
   Future<void> stopListeningConnectionInfo() async {
     await _connectionInfoSubscription?.cancel();
     _connectionInfoSubscription = null;
@@ -266,7 +286,7 @@ extension ConnectedDeviceExtension on AppService {
     updateState(AppState.loadingConnection);
     try {
       _connectedDeviceSubscription =
-          _nearbyService.getConnectedDeviceStream(device).listen(
+          _nearbyService.getConnectedDeviceStreamById(device.info.id).listen(
         (event) async {
           final wasConnected = connectedDevice?.status.isConnected ?? false;
           final nowConnected = event?.status.isConnected ?? false;

lib/nearby_service.dart

@@ -74,8 +74,26 @@ abstract class NearbyService {
   /// For **IOS** this is the state of the message stream subscription.
   /// which is generated for the device with the current connected device ID.
   ///
+  @Deprecated(
+    'Use getCommunicationChannelStateStream or communicationChannelStateValue instead',
+  )
   ValueListenable<CommunicationChannelState> get communicationChannelState;
 
+  ///
+  /// **A value to determine the communication channel's status.**
+  ///
+  /// For **Android** this is the socket connection state.
+  /// The server can wait for the client to connect,
+  /// and the client can be waiting for the server to be created.
+  /// Also, both can be in connected and unconnected states.
+  ///
+  /// For **IOS** this is the state of the message stream subscription.
+  /// which is generated for the device with the current connected device ID.
+  ///
+  /// **Can be used to retrieve the current state of the communication channel without listening to the stream via** [getCommunicationChannelStateStream].
+  ///
+  CommunicationChannelState get communicationChannelStateValue;
+
   ///
   /// Gets version of current platform.
   ///
@@ -147,10 +165,20 @@ abstract class NearbyService {
   /// Returns the  constantly updating [NearbyDevice] you are currently connected to.
   /// If it returns null, then there is no connection at the moment.
   ///
+  @Deprecated('Use getConnectedDeviceStreamById instead')
   Stream<NearbyDevice?> getConnectedDeviceStream(NearbyDevice device) {
     return NearbyServicePlatform.instance.getConnectedDeviceStream(device);
   }
 
+  ///
+  /// Returns the  constantly updating [NearbyDevice] you are currently connected to.
+  /// If it returns null, then there is no connection at the moment.
+  ///
+  Stream<NearbyDevice?> getConnectedDeviceStreamById(String deviceId) {
+    return NearbyServicePlatform.instance
+        .getConnectedDeviceStreamById(deviceId);
+  }
+
   ///
   /// Initialization of a platform-specific service.
   ///
@@ -166,7 +194,7 @@ abstract class NearbyService {
   /// Starts searching for devices using a platform-specific service.
   ///
   /// Note that the [NearbyIOSService] implementation starts **browsing** or
-  /// **advertising** depending on the [NearbyIOSService.isBrowser].
+  /// **advertising** depending on the [NearbyIOSService.isBrowserValue].
   ///
   /// On Android can throw mapped from native platform exceptions:
   /// 1. [NearbyServiceBusyException]
@@ -181,7 +209,7 @@ abstract class NearbyService {
   /// Stops searching for devices using a platform-specific service.
   ///
   /// Note that the [NearbyIOSService] implementation stops **browsing** or
-  /// **advertising** depending on the [NearbyIOSService.isBrowser].
+  /// **advertising** depending on the [NearbyIOSService.isBrowserValue].
   ///
   /// On Android can throw mapped from native platform exceptions:
   /// 1. [NearbyServiceBusyException]
@@ -208,16 +236,18 @@ abstract class NearbyService {
   /// 4. [NearbyServiceGenericErrorException]
   /// 5. [NearbyServiceUnknownException]
   ///
+  @Deprecated('Use connectById instead')
   Future<bool> connect(NearbyDevice device);
 
   ///
-  /// Disconnects from passed [device] using a platform-specific service.
+  /// Connects to passed [deviceId] using a platform-specific service.
+  ///
+  /// Note that the [NearbyIOSService] implementation **invites** or
+  /// **accepts invite** depending on the [NearbyIOSService.isBrowserValue].
   ///
   /// Note that if [Platform.isIOS] == true, [NearbyIOSDevice] should be passed.
   /// If [Platform.isAndroid] == true, [NearbyAndroidDevice] should be passed.
   ///
-  /// **For IOS [device] is required!!!**
-  ///
   /// On Android can throw mapped from native platform exceptions:
   /// 1. [NearbyServiceBusyException]
   /// 2. [NearbyServiceP2PUnsupportedException]
@@ -225,8 +255,41 @@ abstract class NearbyService {
   /// 4. [NearbyServiceGenericErrorException]
   /// 5. [NearbyServiceUnknownException]
   ///
+  Future<bool> connectById(String deviceId);
+
+  ///
+  /// Disconnects from passed [device] using a platform-specific service.
+  ///
+  /// Note that if [Platform.isIOS] == true, [NearbyIOSDevice] should be passed.
+  /// If [Platform.isAndroid] == true, [NearbyAndroidDevice] should be passed.
+  ///
+  /// On Android can throw mapped from native platform exceptions:
+  /// 1. [NearbyServiceBusyException]
+  /// 2. [NearbyServiceP2PUnsupportedException]
+  /// 3. [NearbyServiceNoServiceRequestsException]
+  /// 4. [NearbyServiceGenericErrorException]
+  /// 5. [NearbyServiceUnknownException]
+  ///
+  /// **For IOS [device] is required!!!**
+  @Deprecated('Use disconnectById instead')
   Future<bool> disconnect([NearbyDevice? device]);
 
+  ///
+  /// Disconnects from passed [deviceId] using a platform-specific service.
+  ///
+  /// Note that if [Platform.isIOS] == true, [NearbyIOSDevice] should be passed.
+  /// If [Platform.isAndroid] == true, [NearbyAndroidDevice] should be passed.
+  ///
+  /// On Android can throw mapped from native platform exceptions:
+  /// 1. [NearbyServiceBusyException]
+  /// 2. [NearbyServiceP2PUnsupportedException]
+  /// 3. [NearbyServiceNoServiceRequestsException]
+  /// 4. [NearbyServiceGenericErrorException]
+  /// 5. [NearbyServiceUnknownException]
+  ///
+  /// **For IOS [deviceId] is required!!!**
+  Future<bool> disconnectById([String? deviceId]);
+
   ///
   /// If the device is already connected, it does not mean that you can
   /// send and receive data.
@@ -235,11 +298,9 @@ abstract class NearbyService {
   /// You need to call [startCommunicationChannel] before using [send].
   /// A communication channel can only be created if you are connected to some device.
   ///
-  /// You can monitor changes in communication channel state using the [communicationChannelState] getter.
+  /// You can monitor changes in communication channel state using the [getCommunicationChannelStateStream] method.
   ///
-  FutureOr<bool> startCommunicationChannel(
+  FutureOr<bool> startCommunicationChannel(NearbyCommunicationChannelData data);
-    NearbyCommunicationChannelData data,
-  );
 
   ///
   /// If you called [startCommunicationChannel], remember that you have
@@ -250,6 +311,19 @@ abstract class NearbyService {
   ///
   FutureOr<bool> endCommunicationChannel();
 
+  ///
+  /// **A stream with values of [CommunicationChannelState] to determine the communication channel's status.**
+  ///
+  /// For **Android** this is the socket connection state.
+  /// The server can wait for the client to connect,
+  /// and the client can be waiting for the server to be created.
+  /// Also, both can be in connected and unconnected states.
+  ///
+  /// For **IOS** this is the state of the message stream subscription.
+  /// which is generated for the device with the current connected device ID.
+  ///
+  Stream<CommunicationChannelState> getCommunicationChannelStateStream();
+
   ///
   /// Method to send data to the created communication channel.
   ///

lib/nearby_service_method_channel.dart

@@ -54,13 +54,17 @@ class MethodChannelNearbyService extends NearbyServicePlatform {
   }
 
   @override
+  @Deprecated('Use getConnectedDeviceStreamById instead')
   Stream<NearbyDevice?> getConnectedDeviceStream(NearbyDevice device) {
+    return getConnectedDeviceStreamById(device.info.id);
+  }
+
+  @override
+  Stream<NearbyDevice?> getConnectedDeviceStreamById(String deviceId) {
     const connectedDeviceChannel = EventChannel(
       "nearby_service_connected_device",
     );
-    return connectedDeviceChannel
+    return connectedDeviceChannel.receiveBroadcastStream(deviceId).map((e) {
-        .receiveBroadcastStream(device.info.id)
-        .map((e) {
       final updatedResult = ResultHandler.instance.handle(e);
       return NearbyDeviceMapper.instance.mapToDevice(updatedResult);
     });

lib/nearby_service_platform_interface.dart

@@ -48,11 +48,21 @@ abstract class NearbyServicePlatform extends PlatformInterface {
     throw UnimplementedError('streamPeers() has not been implemented.');
   }
 
+  @Deprecated('Use getConnectedDeviceStreamById instead')
   Stream<NearbyDevice?> getConnectedDeviceStream(NearbyDevice device) {
     throw UnimplementedError(
         'getConnectedDeviceStream() has not been implemented.');
   }
 
+  Stream<NearbyDevice?> getConnectedDeviceStreamById(String deviceId) {
+    throw UnimplementedError(
+      'getConnectedDeviceStreamById() has not been implemented.',
+    );
+  }
+
+  @Deprecated(
+    'This method will be removed. Method disconnect is platform-specific and you should use NearbyServiceIOSPlatform.disconnectById or NearbyServiceAndroidPlatform.disconnectById instead.',
+  )
   Future<bool> disconnect(NearbyDevice device) {
     throw UnimplementedError('disconnect() has not been implemented.');
   }

lib/src/base/nearby_message_base.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:nearby_service/nearby_service.dart';
 
 ///
@@ -36,4 +37,10 @@ abstract base class NearbyMessage<C extends NearbyMessageContent> {
   String toString() {
     return 'NearbyMessage{content: $content}';
   }
+
+  ///
+  /// Get [Map] from [NearbyMessage].
+  ///
+  @mustCallSuper
+  Map<String, dynamic> toJson() => {'content': content.toJson()};
 }

lib/src/model/nearby_message.dart

@@ -23,10 +23,11 @@ final class OutgoingNearbyMessage<C extends NearbyMessageContent>
   ///
   /// Get [Map] from [OutgoingNearbyMessage].
   ///
+  @override
   Map<String, dynamic> toJson() {
     return {
-      'content': content.toJson(),
       'receiver': receiver.toJson(),
+      ...super.toJson(),
     };
   }
 
@@ -92,4 +93,15 @@ final class ReceivedNearbyMessage<C extends NearbyMessageContent>
   String toString() {
     return 'ReceivedNearbyMessage{sender: $sender content: $content}';
   }
+
+  ///
+  /// Get [Map] from [ReceivedNearbyMessage].
+  ///
+  @override
+  Map<String, dynamic> toJson() {
+    return {
+      'sender': sender.toJson(),
+      ...super.toJson(),
+    };
+  }
 }

lib/src/platforms/android/nearby_android_service.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-
 import 'package:flutter/foundation.dart';
 import 'package:nearby_service/nearby_service.dart';
 
@@ -14,10 +13,16 @@ import 'socket_service/nearby_socket_service.dart';
 class NearbyAndroidService extends NearbyService {
   late final _socketService = NearbySocketService(this);
 
+  @Deprecated(
+    'Use getCommunicationChannelStateStream or communicationChannelStateValue instead',
+  )
   @override
-  ValueListenable<CommunicationChannelState> get communicationChannelState {
+  ValueListenable<CommunicationChannelState> get communicationChannelState =>
-    return _socketService.state;
+      _socketService.communicationChannelState;
-  }
+
+  @override
+  CommunicationChannelState get communicationChannelStateValue =>
+      _socketService.communicationChannelStateValue;
 
   ///
   /// Initializes Android [WifiP2PManager](https://developer.android.com/reference/android/net/wifi/p2p/WifiP2pManager)
@@ -53,19 +58,39 @@ class NearbyAndroidService extends NearbyService {
   ///
   /// Note! Requires [NearbyAndroidDevice] to be passed.
   ///
+  @Deprecated('Use connectById instead')
   @override
   Future<bool> connect(NearbyDevice device) {
     _requireAndroidDevice(device);
     return NearbyServiceAndroidPlatform.instance.connect(device.info.id);
   }
 
+  ///
+  /// Connects to the [deviceId] on the Wifi Direct network.
+  ///
+  @override
+  Future<bool> connectById(String deviceId) {
+    return NearbyServiceAndroidPlatform.instance.connect(deviceId);
+  }
+
   ///
   /// Disconnects from the [device] on the Wifi Direct network.
   ///
+  /// [device] is not required for Android.
+  ///
+  @Deprecated('Use disconnectById instead')
+  @override
+  Future<bool> disconnect([NearbyDevice? device]) {
+    return NearbyServiceAndroidPlatform.instance.disconnect();
+  }
+
+  ///
+  /// Disconnects from the [deviceId] on the Wifi Direct network.
+  ///
   /// Note! Requires [NearbyAndroidDevice] to be passed.
   ///
   @override
-  Future<bool> disconnect([NearbyDevice? device]) {
+  Future<bool> disconnectById([String? deviceId]) {
     return NearbyServiceAndroidPlatform.instance.disconnect();
   }
 
@@ -143,6 +168,11 @@ class NearbyAndroidService extends NearbyService {
     return NearbyServiceAndroidPlatform.instance.getConnectionInfoStream();
   }
 
+  @override
+  Stream<CommunicationChannelState> getCommunicationChannelStateStream() {
+    return _socketService.stateController.stream.asBroadcastStream();
+  }
+
   void _requireAndroidDevice(NearbyDevice device) {
     assert(
       device is NearbyAndroidDevice,

lib/src/platforms/android/socket_service/nearby_socket_service.dart

@@ -30,7 +30,10 @@ class NearbySocketService {
     _pingManager,
   );
 
-  final state = ValueNotifier(CommunicationChannelState.notConnected);
+  late final stateController =
+      StreamController<CommunicationChannelState>.broadcast()
+        ..add(_state.value)
+        ..stream.asBroadcastStream().listen((e) => _state.value = e);
 
   NearbyAndroidCommunicationChannelData _androidData =
       const NearbyAndroidCommunicationChannelData();
@@ -40,6 +43,13 @@ class NearbySocketService {
   HttpServer? _server;
   StreamSubscription? _messagesSubscription;
 
+  final _state = ValueNotifier(CommunicationChannelState.notConnected);
+
+  CommunicationChannelState get communicationChannelStateValue => _state.value;
+
+  ValueListenable<CommunicationChannelState> get communicationChannelState =>
+      _state;
+
   ///
   /// Start a socket with the user's role defined.
   /// If he is the owner of the group, he becomes a server.
@@ -53,7 +63,7 @@ class NearbySocketService {
   Future<bool> startSocket({
     required NearbyCommunicationChannelData data,
   }) async {
-    state.value = CommunicationChannelState.loading;
+    stateController.add(CommunicationChannelState.loading);
 
     _androidData = data.androidData;
     _connectedDeviceId = data.connectedDeviceId;
@@ -123,7 +133,7 @@ class NearbySocketService {
       _server = null;
       _connectedDeviceId = null;
 
-      state.value = CommunicationChannelState.notConnected;
+      stateController.add(CommunicationChannelState.notConnected);
       return true;
     } catch (e) {
       return false;
@@ -134,7 +144,7 @@ class NearbySocketService {
     required NearbyServiceMessagesListener socketListener,
     required NearbyConnectionAndroidInfo info,
   }) async {
-    if (state.value.isLoading) {
+    if (_state.value.isLoading) {
       final response = await _network.pingServer(
         address: info.ownerIpAddress,
         port: _androidData.port,
@@ -216,23 +226,23 @@ class NearbySocketService {
           }
         },
         onDone: () {
-          state.value = CommunicationChannelState.notConnected;
+          stateController.add(CommunicationChannelState.notConnected);
           socketListener.onDone?.call();
         },
         onError: (e, s) {
           Logger.error(e);
-          state.value = CommunicationChannelState.notConnected;
+          stateController.add(CommunicationChannelState.notConnected);
           socketListener.onError?.call(e, s);
         },
         cancelOnError: socketListener.cancelOnError,
       );
     }
     if (_messagesSubscription != null) {
-      state.value = CommunicationChannelState.connected;
+      stateController.add(CommunicationChannelState.connected);
       Logger.info('Socket subscription was created successfully');
       socketListener.onCreated?.call();
     } else {
-      state.value = CommunicationChannelState.notConnected;
+      stateController.add(CommunicationChannelState.notConnected);
     }
   }
 

lib/src/platforms/ios/nearby_ios_service.dart

@@ -14,29 +14,56 @@ import 'package:nearby_service/src/utils/stream_mapper.dart';
 ///
 class NearbyIOSService extends NearbyService {
   final _isBrowser = ValueNotifier<bool>(true);
-  final _state = ValueNotifier(CommunicationChannelState.notConnected);
+  final _communicationChannelState =
+      ValueNotifier(CommunicationChannelState.notConnected);
+
+  late final _isBrowserController = StreamController<bool>.broadcast()
+    ..add(_isBrowser.value)
+    ..stream.asBroadcastStream().listen((e) => _isBrowser.value = e);
+
+  late final _stateController =
+      StreamController<CommunicationChannelState>.broadcast()
+        ..add(_communicationChannelState.value)
+        ..stream
+            .asBroadcastStream()
+            .listen((e) => _communicationChannelState.value = e);
 
   StreamSubscription? _messagesSubscription;
   StreamSubscription? _resourcesSubscription;
 
   @override
+  CommunicationChannelState get communicationChannelStateValue =>
+      _communicationChannelState.value;
+
+  @override
+  @Deprecated(
+    'Use getCommunicationChannelStateStream or communicationChannelStateValue instead',
+  )
   ValueListenable<CommunicationChannelState> get communicationChannelState =>
-      _state;
+      _communicationChannelState;
 
   ///
   /// Determines whether the current device is a **Browser** or **Advertiser**.
   ///
+  @Deprecated('Use getIsBrowserStream or isBrowserValue instead')
+  ValueListenable<bool> get isBrowser => _isBrowser;
+
+  ///
+  /// Determines whether the current device is a **Browser** or **Advertiser**.
+  ///
+  bool get isBrowserValue => _isBrowser.value;
+
+  ///
+  /// Stream that determines whether the current device is a **Browser** or **Advertiser**.
+  ///
   /// * Browser will only see devices with Advertiser status in the peers list.
   /// Browser sends connection requests.
   /// * Advertiser will see in the peers list only devices with Browser
   /// status that have sent it a connection request.
   /// Advertiser accepts or rejects connection requests.
   ///
-  ValueListenable<bool> get isBrowser => _isBrowser;
+  Stream<bool> getIsBrowserStream() =>
-
+      _isBrowserController.stream.asBroadcastStream();
-  String get _currentConnectionType {
-    return _isBrowser.value ? 'browsing' : 'advertising';
-  }
 
   ///
   /// Initializes [MCNearbyServiceAdvertiser](https://developer.apple.com/documentation/multipeerconnectivity/mcnearbyserviceadvertiser)
@@ -73,8 +100,8 @@ class NearbyIOSService extends NearbyService {
   ///
   /// Starts discovery on the local P2P network.
   ///
-  /// Starts browsing for peers if [isBrowser] is true.
+  /// Starts browsing for peers if [isBrowserValue] is true.
-  /// Starts advertising for peers if [isBrowser] is false.
+  /// Starts advertising for peers if [isBrowserValue] is false.
   ///
   @override
   Future<bool> discover() async {
@@ -92,8 +119,8 @@ class NearbyIOSService extends NearbyService {
   ///
   /// Slops discovery on the local P2P network.
   ///
-  /// Slops browsing for peers if [isBrowser] is true.
+  /// Slops browsing for peers if [isBrowserValue] is true.
-  /// Slops advertising for peers if [isBrowser] is false.
+  /// Slops advertising for peers if [isBrowserValue] is false.
   ///
   @override
   Future<bool> stopDiscovery() async {
@@ -112,24 +139,35 @@ class NearbyIOSService extends NearbyService {
   ///
   /// Connects to the [device] on the P2P network.
   ///
-  /// Invites [device] if [isBrowser] is true.
+  /// Invites [device] if [isBrowserValue] is true.
-  /// Accepts invite from [device] if [isBrowser] is false.
+  /// Accepts invite from [device] if [isBrowserValue] is false.
   ///
   /// Note! Requires [NearbyIOSDevice] to be passed.
-  ///
+  @Deprecated('Use connectById instead')
   @override
   Future<bool> connect(NearbyDevice device) async {
     _requireIOSDevice(device);
+    return connectById(device.info.id);
+  }
+
+  ///
+  /// Connects to the [deviceId] on the P2P network.
+  ///
+  /// Invites [deviceId] if [isBrowserValue] is true.
+  /// Accepts invite from [deviceId] if [isBrowserValue] is false.
+  ///
+  @override
+  Future<bool> connectById(String deviceId) async {
     final result = _isBrowser.value
-        ? await NearbyServiceIOSPlatform.instance.invite(device.info.id)
+        ? await NearbyServiceIOSPlatform.instance.invite(deviceId)
-        : await NearbyServiceIOSPlatform.instance.acceptInvite(device.info.id);
+        : await NearbyServiceIOSPlatform.instance.acceptInvite(deviceId);
 
     _logResult(
       result,
       onSuccess:
           '${_isBrowser.value ? 'Sent invitation to' : 'Accepted invitation from'} '
-          '${device.info.id}',
+          '$deviceId',
-      onError: 'Failed to connect to ${device.info.id}',
+      onError: 'Failed to connect to $deviceId',
     );
     return result;
   }
@@ -139,17 +177,25 @@ class NearbyIOSService extends NearbyService {
   ///
   /// Note! Requires [NearbyIOSDevice] to be passed.
   ///
+  @Deprecated('Use disconnectById instead')
   @override
   Future<bool> disconnect([NearbyDevice? device]) async {
     if (device == null) return false;
     _requireIOSDevice(device);
-    final result = await NearbyServiceIOSPlatform.instance.disconnect(
+    return disconnectById(device.info.id);
-      device.info.id,
+  }
-    );
+
+  ///
+  /// Disconnects from the [deviceId] on the P2P network.
+  ///
+  @override
+  Future<bool> disconnectById([String? deviceId]) async {
+    if (deviceId == null) return false;
+    final result = await NearbyServiceIOSPlatform.instance.disconnect(deviceId);
     _logResult(
       result,
-      onSuccess: 'Disconnected from ${device.info.id}',
+      onSuccess: 'Disconnected from $deviceId',
-      onError: 'Failed to disconnect from ${device.info.id}',
+      onError: 'Failed to disconnect from $deviceId',
     );
     return result;
   }
@@ -163,7 +209,8 @@ class NearbyIOSService extends NearbyService {
     NearbyCommunicationChannelData data,
   ) async {
     Logger.debug('Creating messages subscription');
-    _state.value = CommunicationChannelState.loading;
+    _stateController.add(CommunicationChannelState.loading);
+
     await endCommunicationChannel();
     final eventListener = data.messagesListener;
     final filesListener = data.filesListener;
@@ -175,12 +222,12 @@ class NearbyIOSService extends NearbyService {
         .listen(
       eventListener.onData,
       onDone: () {
-        _state.value = CommunicationChannelState.notConnected;
+        _stateController.add(CommunicationChannelState.notConnected);
         eventListener.onDone?.call();
       },
       onError: (e, s) {
         Logger.error(e);
-        _state.value = CommunicationChannelState.notConnected;
+        _stateController.add(CommunicationChannelState.notConnected);
         eventListener.onError?.call(e, s);
       },
       cancelOnError: eventListener.cancelOnError,
@@ -194,7 +241,7 @@ class NearbyIOSService extends NearbyService {
       onDone: filesListener?.onDone,
       onError: (e, s) {
         Logger.error(e);
-        _state.value = CommunicationChannelState.notConnected;
+        _stateController.add(CommunicationChannelState.notConnected);
         filesListener?.onError?.call(e, s);
       },
       cancelOnError: filesListener?.cancelOnError,
@@ -202,9 +249,9 @@ class NearbyIOSService extends NearbyService {
     if (_messagesSubscription != null) {
       Logger.info('Messages subscription was created successfully');
       eventListener.onCreated?.call();
-      _state.value = CommunicationChannelState.connected;
+      _stateController.add(CommunicationChannelState.connected);
     } else {
-      _state.value = CommunicationChannelState.notConnected;
+      _stateController.add(CommunicationChannelState.notConnected);
     }
     if (_resourcesSubscription != null) {
       Logger.info('Resources subscription was created successfully');
@@ -223,7 +270,7 @@ class NearbyIOSService extends NearbyService {
     await _resourcesSubscription?.cancel();
     _messagesSubscription = null;
     _resourcesSubscription = null;
-    _state.value = CommunicationChannelState.notConnected;
+    _stateController.add(CommunicationChannelState.notConnected);
     Logger.debug('Communication channel was cancelled');
     return true;
   }
@@ -240,6 +287,11 @@ class NearbyIOSService extends NearbyService {
     throw NearbyServiceException.invalidMessage(message.content);
   }
 
+  @override
+  Stream<CommunicationChannelState> getCommunicationChannelStateStream() {
+    return _stateController.stream.asBroadcastStream();
+  }
+
   ///
   /// If you want to ask the user to change the name on the network,
   /// you can retrieve the name previously saved in
@@ -253,11 +305,11 @@ class NearbyIOSService extends NearbyService {
   }
 
   ///
-  /// Changes the [isBrowser] to the passed [value].
+  /// Changes the [isBrowserValue] to the passed [value].
   ///
   void setIsBrowser({required bool value}) {
     Logger.debug('Is Browser Value was set to $value');
-    _isBrowser.value = value;
+    _isBrowserController.add(value);
   }
 
   void _logResult(
@@ -272,6 +324,10 @@ class NearbyIOSService extends NearbyService {
     }
   }
 
+  String get _currentConnectionType {
+    return _isBrowser.value ? 'browsing' : 'advertising';
+  }
+
   void _requireIOSDevice(NearbyDevice device) {
     assert(
       device is NearbyIOSDevice,

pubspec.yaml

@@ -1,6 +1,6 @@
 name: nearby_service
 description: Nearby Service Flutter Plugin is used to create connections in a P2P network. Supports sending text messages and files.
-version: 0.0.9
+version: 0.1.0
 homepage: https://github.com/ksenia312/nearby_service
 repository: https://github.com/ksenia312/nearby_service
 

test/nearby_service_test.dart

@@ -49,6 +49,12 @@ class MockNearbyServicePlatform
     throw UnimplementedError();
   }
 
+  @override
+  Stream<NearbyDevice?> getConnectedDeviceStreamById(String deviceId) {
+    // TODO: implement getConnectedDeviceStreamById
+    throw UnimplementedError();
+  }
+
   @override
   Future<NearbyDeviceInfo?> getCurrentDeviceInfo() {
     // TODO: implement getCurrentDevice