Improve signalR protocol compatibility

lib/apis/contact_api.dart

@@ -7,7 +7,7 @@ import 'package:contacts_plus_plus/models/users/user.dart';
 import 'package:contacts_plus_plus/models/users/user_profile.dart';
 import 'package:contacts_plus_plus/models/users/user_status.dart';
 
-class FriendApi {
+class ContactApi {
   static Future<List<Friend>> getFriendsList(ApiClient client, {DateTime? lastStatusUpdate}) async {
     final response = await client.get("/users/${client.userId}/contacts${lastStatusUpdate != null ? "?lastStatusUpdate=${lastStatusUpdate.toUtc().toIso8601String()}" : ""}");
     client.checkResponse(response);

lib/clients/messaging_client.dart

@@ -7,7 +7,7 @@ import 'package:flutter/widgets.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:logging/logging.dart';
 
-import 'package:contacts_plus_plus/apis/friend_api.dart';
+import 'package:contacts_plus_plus/apis/contact_api.dart';
 import 'package:contacts_plus_plus/apis/message_api.dart';
 import 'package:contacts_plus_plus/apis/user_api.dart';
 import 'package:contacts_plus_plus/clients/notification_client.dart';
@@ -15,16 +15,17 @@ import 'package:contacts_plus_plus/models/users/friend.dart';
 import 'package:contacts_plus_plus/clients/api_client.dart';
 import 'package:contacts_plus_plus/config.dart';
 import 'package:contacts_plus_plus/models/message.dart';
+import 'package:uuid/uuid.dart';
 
 enum EventType {
-  unknown,
+  undefined,
-  message,
+  invocation,
-  unknown1,
+  streamItem,
-  unknown2,
+  completion,
-  unknown3,
+  streamInvocation,
-  unknown4,
+  cancelInvocation,
-  keepAlive,
+  ping,
-  error;
+  close;
 }
 
 enum EventTarget {
@@ -32,7 +33,9 @@ enum EventTarget {
   messageSent,
   receiveMessage,
   messagesRead,
-  receiveSessionUpdate;
+  receiveSessionUpdate,
+  removeSession,
+  receiveStatusUpdate;
 
   factory EventTarget.parse(String? text) {
     if (text == null) return EventTarget.unknown;
@@ -127,7 +130,7 @@ class MessagingClient extends ChangeNotifier {
     _autoRefresh?.cancel();
     _autoRefresh = Timer(_autoRefreshDuration, () => refreshFriendsList());
 
-    final friends = await FriendApi.getFriendsList(_apiClient, lastStatusUpdate: lastUpdateUtc);
+    final friends = await ContactApi.getFriendsList(_apiClient, lastStatusUpdate: lastUpdateUtc);
     for (final friend in friends) {
       await _updateFriend(friend);
     }
@@ -136,16 +139,9 @@ class MessagingClient extends ChangeNotifier {
     notifyListeners();
   }
 
-  void sendMessage(Message message) async {
+  void sendMessage(Message message) {
     final msgBody = message.toMap();
-    final data = {
+    _send("SendMessage", body: msgBody);
-      "type": EventType.message.index,
-      "target": "SendMessage",
-      "arguments": [
-        msgBody
-      ],
-    };
-    _sendData(data);
     final cache = getUserMessageCache(message.recipientId) ?? _createUserMessageCache(message.recipientId);
     cache.addMessage(message);
     notifyListeners();
@@ -153,14 +149,7 @@ class MessagingClient extends ChangeNotifier {
 
   void markMessagesRead(MarkReadBatch batch) {
     final msgBody = batch.toMap();
-    final data = {
+    _send("MarkMessagesRead", body: msgBody);
-      "type": EventType.message.index,
-      "target": "MarkMessagesRead",
-      "arguments": [
-        msgBody
-      ],
-    };
-    _sendData(data);
     clearUnreadsForUser(batch.senderId);
   }
 
@@ -281,6 +270,7 @@ class MessagingClient extends ChangeNotifier {
     _wsChannel!.done.then((error) => _onDisconnected(error));
     _wsChannel!.listen(_handleEvent, onDone: () => _onDisconnected("Connection closed."), onError: _onDisconnected);
     _wsChannel!.add(_negotiationPacket);
+    _send("InitializeStatus");
   }
 
   Future<WebSocket> _tryConnect() async {
@@ -301,34 +291,38 @@ class MessagingClient extends ChangeNotifier {
 
   void _handleEvent(event) {
     final body = jsonDecode((event.toString().replaceAll(_eofChar, "")));
-    final int rawType = body["type"] ?? 0;
+    final int? rawType = body["type"];
+    if (rawType == null) {
+      _logger.warning("Received empty event, content was $event");
+      return;
+    }
     if (rawType > EventType.values.length) {
       _logger.info("Unhandled event type $rawType: $body");
       return;
     }
     switch (EventType.values[rawType]) {
-      case EventType.unknown1:
+      case EventType.streamItem:
-      case EventType.unknown2:
+      case EventType.completion:
-      case EventType.unknown3:
+      case EventType.streamInvocation:
-      case EventType.unknown4:
+      case EventType.cancelInvocation:
-      case EventType.unknown:
+      case EventType.undefined:
-        _logger.info("Received unknown event: $rawType: $body");
+        _logger.info("Received unhandled event: $rawType: $body");
         break;
-      case EventType.message:
+      case EventType.invocation:
-        _logger.info("Received message-event.");
+        _logger.info("Received invocation-event.");
-        _handleMessageEvent(body);
+        _handleInvocation(body);
         break;
-      case EventType.keepAlive:
+      case EventType.ping:
         _logger.info("Received keep-alive.");
         break;
-      case EventType.error:
+      case EventType.close:
-        _logger.severe("Received error-event: ${body["error"]}");
+        _logger.severe("Received close-event: ${body["error"]}");
         // Should we trigger a manual reconnect here or just let the remote service close the connection?
         break;
     }
   }
 
-  void _handleMessageEvent(body) async {
+  void _handleInvocation(body) async {
     final target = EventTarget.parse(body["target"]);
     final args = body["arguments"];
     switch (target) {
@@ -366,15 +360,31 @@ class MessagingClient extends ChangeNotifier {
         }
         notifyListeners();
         break;
+      case EventTarget.receiveStatusUpdate:
+
+        break;
+      case EventTarget.removeSession:
       case EventTarget.receiveSessionUpdate:
         // TODO: Handle session updates
-        _logger.info("Received session update");
+        _logger.info("Received unhandled invocation event.");
         break;
     }
   }
 
-  void _sendData(data) {
+  String _send(String target, {Map? body}) {
+    final invocationId = const Uuid().v4();
+    final data = {
+      "type": EventType.invocation.index,
+      "invocationId": invocationId,
+      "target": target,
+      "arguments": [
+        if (body != null)
+          body
+      ],
+    };
     if (_wsChannel == null) throw "Neos Hub is not connected";
     _wsChannel!.add(jsonEncode(data)+_eofChar);
+    return invocationId;
   }
+
 }

lib/widgets/friends/user_list_tile.dart

@@ -1,4 +1,4 @@
-import 'package:contacts_plus_plus/apis/friend_api.dart';
+import 'package:contacts_plus_plus/apis/contact_api.dart';
 import 'package:contacts_plus_plus/auxiliary.dart';
 import 'package:contacts_plus_plus/client_holder.dart';
 import 'package:contacts_plus_plus/models/users/user.dart';
@@ -55,11 +55,11 @@ class _UserListTileState extends State<UserListTile> {
           });
           try {
             if (_localAdded) {
-              await FriendApi.removeUserAsFriend(ClientHolder
+              await ContactApi.removeUserAsFriend(ClientHolder
                   .of(context)
                   .apiClient, user: widget.user);
             } else {
-              await FriendApi.addUserAsFriend(ClientHolder
+              await ContactApi.addUserAsFriend(ClientHolder
                   .of(context)
                   .apiClient, user: widget.user);
             }

pubspec.lock

@@ -504,14 +504,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.5.0"
-  message_pack_dart:
-    dependency: transitive
-    description:
-      name: message_pack_dart
-      sha256: "71b9f0ff60e5896e60b337960bb535380d7dba3297b457ac763ccae807385b59"
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.0.1"
   meta:
     dependency: transitive
     description:
@@ -688,14 +680,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.4"
-  pool:
-    dependency: transitive
-    description:
-      name: pool
-      sha256: "20fe868b6314b322ea036ba325e6fc0711a22948856475e2c2b6306e8ab39c2a"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.5.1"
   process:
     dependency: transitive
     description:
@@ -776,22 +760,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.27.7"
-  shelf:
-    dependency: transitive
-    description:
-      name: shelf
-      sha256: ad29c505aee705f41a4d8963641f91ac4cee3c8fad5947e033390a7bd8180fa4
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.4.1"
-  signalr_netcore:
-    dependency: "direct main"
-    description:
-      name: signalr_netcore
-      sha256: "8f84b4b516c03f3a6872f94e9729d1441d5d223a77c81d0a7d7dae5dd0ce1f2f"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.3.6"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -821,22 +789,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.4.5"
-  sse:
-    dependency: transitive
-    description:
-      name: sse
-      sha256: "3ff9088cac3f45aa8b91336f1962e3ea6c81baaba0bbba361c05f8aa7fb59442"
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.1.2"
-  sse_channel:
-    dependency: transitive
-    description:
-      name: sse_channel
-      sha256: ba2b1382b9423c58fa83e1f01a3a40fbaa16a0594aa984870c88bad0b45d4ca4
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.0.3"
   stack_trace:
     dependency: transitive
     description:
@@ -901,14 +853,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.9.2"
-  tuple:
-    dependency: transitive
-    description:
-      name: tuple
-      sha256: a97ce2013f240b2f3807bcbaf218765b6f301c3eff91092bcfa23a039e7dd151
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.0.2"
   typed_data:
     dependency: transitive
     description:

pubspec.yaml

@@ -38,7 +38,6 @@ dependencies:
   flutter_secure_storage: ^8.0.0
   intl: ^0.18.1
   path: ^1.8.2
-  signalr_netcore: ^1.3.6
   logging: ^1.1.1
   cached_network_image: ^3.2.3
   web_socket_channel: ^2.4.0