Add server password for connection, and change reconnect handling.

lib/chessapp/chess_app.dart

@@ -51,6 +51,7 @@ class ChessApp extends StatelessWidget {
                         return StreamBuilder(
                           stream: ServerConnection.getInstance().channel.stream,
                           builder: (context, snapshot) {
+                            print(snapshot.data.toString());
                             return Text(
                                 style: const TextStyle(color: Colors.white),
                                 snapshot.data.toString());
@@ -65,7 +66,6 @@ class ChessApp extends StatelessWidget {
           ),
           floatingActionButton: FloatingActionButton(
             onPressed: () {
-              ServerConnection.getInstance().reconnect();
               ConnectionCubit.getInstance().reconnect();
             },
             child: const Icon(Icons.network_wifi),

lib/connection/ws_connection.dart

@@ -2,15 +2,14 @@ import 'package:web_socket_channel/web_socket_channel.dart';
 
 class ServerConnection {
   late WebSocketChannel channel;
+  late bool wasConnected = false;
   late int counter = 0;
 
   static final ServerConnection _instance = ServerConnection._internal();
 
   ServerConnection._internal() {
     print("ServerConnection._interal constructor is called");
-    channel = WebSocketChannel.connect(
+    connect();
-      Uri.parse('ws://localhost:8080'),
-    );
   }
 
   factory ServerConnection() {
@@ -26,7 +25,16 @@ class ServerConnection {
     counter++;
   }
 
-  void reconnect() {
+  void connect() {
+    if (wasConnected) channel.sink.close();
     channel = WebSocketChannel.connect(Uri.parse('ws://localhost:8080'));
+    wasConnected = true;
+
+    sendPassword();
+  }
+
+  void sendPassword() {
+    channel.sink.add(
+        'pw NC4EjHvRcsltY3ibWuYDH9OXbKgDXppfnHNCi1K4jktMspoeZjBnOPExxCpDms7zmxijoKCSaSlZ1fWclfWr7Q32DJnv2k87Z5uM');
   }
 }

lib/connection_cubit/connection_cubit.dart

@@ -1,5 +1,7 @@
 import 'package:flutter_bloc/flutter_bloc.dart';
 
+import '../connection/ws_connection.dart';
+
 class ConnectionCubit extends Cubit<ConnectionCubitState> {
   static final ConnectionCubit _instance = ConnectionCubit._internal();
 
@@ -14,6 +16,7 @@ class ConnectionCubit extends Cubit<ConnectionCubitState> {
   }
 
   void reconnect() {
+    ServerConnection.getInstance().connect();
     emit(ConnectionCubitState(true));
   }
 }