refactor all [setByName] [getByName] to async bridge function

flutter/lib/mobile/pages/connection_page.dart

@@ -54,8 +54,9 @@ class _ConnectionPageState extends State<ConnectionPage> {
       }();
     }
     if (isAndroid) {
-      Timer(Duration(seconds: 5), () {
-        _updateUrl = gFFI.getByName('software_update_url');
+      Timer(Duration(seconds: 5), () async {
+        _updateUrl = await bind.mainGetSoftwareUpdateUrl();
+        ;
         if (_updateUrl.isNotEmpty) setState(() {});
       });
     }
@@ -299,7 +300,7 @@ class _ConnectionPageState extends State<ConnectionPage> {
       elevation: 8,
     );
     if (value == 'remove') {
-      setState(() => gFFI.setByName('remove', '$id'));
+      setState(() => bind.mainRemovePeer(id: id));
       () async {
         removePreference(id);
       }();
@@ -315,10 +316,34 @@ class WebMenu extends StatefulWidget {
 }
 
 class _WebMenuState extends State<WebMenu> {
+  String? username;
+  String url = "";
+
+  @override
+  void initState() {
+    super.initState();
+    () async {
+      final usernameRes = await getUsername();
+      final urlRes = await getUrl();
+      var update = false;
+      if (usernameRes != username) {
+        username = usernameRes;
+        update = true;
+      }
+      if (urlRes != url) {
+        url = urlRes;
+        update = true;
+      }
+
+      if (update) {
+        setState(() {});
+      }
+    }();
+  }
+
   @override
   Widget build(BuildContext context) {
     Provider.of<FfiModel>(context);
-    final username = getUsername();
     return PopupMenuButton<String>(
         icon: Icon(Icons.more_vert),
         itemBuilder: (context) {
@@ -336,7 +361,7 @@ class _WebMenuState extends State<WebMenu> {
                   value: "server",
                 )
               ] +
-              (getUrl().contains('admin.rustdesk.com')
+              (url.contains('admin.rustdesk.com')
                   ? <PopupMenuItem<String>>[]
                   : [
                       PopupMenuItem(