All dem changes

lib/backend/modules/networking.dart

@@ -9,11 +9,16 @@ import 'package:shelf_web_socket/shelf_web_socket.dart';
 import 'package:web_socket_channel/web_socket_channel.dart';
 import 'package:bus_infotainment/backend/modules/info_module.dart';
 import 'package:bus_infotainment/utils/delegates.dart';
+import 'package:http/http.dart' as http;
 
 class NetworkingModule extends InfoModule {
   // Host websocket server
-  String host = "ws://0.0.0.0:8080";
-  HttpServer? _server;
+
+  int webSocketPort = 8080;
+  int httpPort = 8081;
+
+  HttpServer? _sockerServer;
+  HttpServer? _httpServer;
   WebSocketChannel? _channel;
 
   // Store connected WebSocket channels
@@ -50,8 +55,13 @@ class NetworkingModule extends InfoModule {
         });
       });
 
-      _server = await io.serve(handler, InternetAddress.anyIPv4, 8080);
-      print('WebSocket server started at ${_server?.address.address}:${_server?.port}');
+      _sockerServer = await io.serve(handler, InternetAddress.anyIPv4, webSocketPort);
+      print('WebSocket server started at ${_sockerServer?.address.address}:${_sockerServer?.port}');
+
+      // Start Http api server
+      _httpServer = await io.serve((Request request) async {
+        return Response.ok('bus infotainment server');
+      }, InternetAddress.anyIPv4, httpPort);
 
       return true;
     } catch (e) {
@@ -61,7 +71,7 @@ class NetworkingModule extends InfoModule {
   }
 
   bool stopWebSocketServer() {
-    if (_server == null) {
+    if (_sockerServer == null) {
       throw Exception('WebSocket server is not running');
     }
 
@@ -70,8 +80,12 @@ class NetworkingModule extends InfoModule {
         client.sink.close();
       }
       _connectedClients.clear();
-      _server?.close(force: true);
-      _server = null;
+      _sockerServer?.close(force: true);
+      _sockerServer = null;
+
+      _httpServer?.close(force: true);
+      _httpServer = null;
+
       print('WebSocket server stopped');
       return true;
     } catch (e) {
@@ -82,6 +96,17 @@ class NetworkingModule extends InfoModule {
 
   Future<bool> connectToWebSocketServer(String url) async {
     try {
+
+      {
+        // Verify that the server we are connecting to is running, and is a bus infotainment server
+        var response = await http.get(Uri.parse('http://$url:$httpPort'));
+
+        if (response.statusCode != 200 || response.body != 'bus infotainment server') {
+          print('Server at $url is not a bus infotainment server');
+          return false;
+        }
+      }
+
       _channel = await WebSocketChannel.connect(Uri.parse(url));
       _channel?.stream.listen((message) {
         // Handle messages from the server here
@@ -116,7 +141,7 @@ class NetworkingModule extends InfoModule {
   bool sendMessage(String message) {
 
     // If hosting a server, send message to all clients
-    if (_server != null) {
+    if (_sockerServer != null) {
       return sendMessageToClients(message);
     }
 
@@ -193,4 +218,4 @@ class NetworkingModule extends InfoModule {
       }
     }
   }
-}
+}