add the basic single R

lib/main.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:queuing_system/utils/signalR_utils.dart';
 
 import 'core/base/app_scaffold_widget.dart';
 import 'core/base/project_view_model.dart';
@@ -49,14 +50,6 @@ class MyApp extends StatelessWidget {
 
 class MyHomePage extends StatefulWidget {
 
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
 
    String title ="MyHomePage";
 
@@ -65,36 +58,19 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
-    });
-  }
-
   @override
   Widget build(BuildContext context) {
+    SignalRHelper signalRHelper= SignalRHelper();
     return AppScaffold(
       appBar: AppBar(
         title: Text(widget.title),
       ),
       body: Center(
-
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
+             Text(
+              signalRHelper.msg,
             ),
           ],
         ),

lib/utils/signalR_utils.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+import 'package:signalr_core/signalr_core.dart';
+
+class SignalRHelper{
+
+  String hubBaseURL ="";
+  String msg ="Elham";
+  HubConnection connection;
+   SignalRHelper(){
+    connection = HubConnectionBuilder()
+        .withUrl(
+        hubBaseURL,
+        HttpConnectionOptions(
+          logging: (level, message) {
+            msg = message;
+           print("$message");
+          },
+        )
+    ).build();
+  }
+
+
+  closeConnection(BuildContext context) async {
+    if(connection.state == HubConnectionState.connected)
+    {
+      await connection.stop();
+    }
+  }
+}

pubspec.lock

@@ -71,6 +71,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
+  equatable:
+    dependency: transitive
+    description:
+      name: equatable
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.3"
   fake_async:
     dependency: transitive
     description:
@@ -149,6 +163,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.1"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
   matcher:
     dependency: transitive
     description:
@@ -212,6 +233,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "6.0.2"
+  quiver:
+    dependency: transitive
+    description:
+      name: quiver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1+1"
+  signalr_core:
+    dependency: "direct main"
+    description:
+      name: signalr_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -224,6 +259,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.1"
+  sse_client:
+    dependency: transitive
+    description:
+      name: sse_client
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.0"
   stack_trace:
     dependency: transitive
     description:
@@ -259,6 +301,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.4.3"
+  tuple:
+    dependency: transitive
+    description:
+      name: tuple
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   typed_data:
     dependency: transitive
     description:
@@ -273,6 +322,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
   xml:
     dependency: transitive
     description:

pubspec.yaml

@@ -39,6 +39,10 @@ dependencies:
   flutter_svg: ^1.0.3
   http: ^0.13.0
 
+  #signalr core
+  signalr_core: ^1.1.1
+
+