diff --git a/flutter/lib/common.dart b/flutter/lib/common.dart
index 16e8a172e..861b6b645 100644
--- a/flutter/lib/common.dart
+++ b/flutter/lib/common.dart
@@ -391,3 +391,10 @@ Future<void> initGlobalFFI() async {
   // global shared preference
   await Get.putAsync(() => SharedPreferences.getInstance());
 }
+
+String translate(String name) {
+  if (name.startsWith('Failed to') && name.contains(': ')) {
+    return name.split(': ').map((x) => translate(x)).join(': ');
+  }
+  return platformFFI.translate(name, localeName);
+}
diff --git a/flutter/lib/desktop/pages/connection_page.dart b/flutter/lib/desktop/pages/connection_page.dart
index e32275373..d992c6c62 100644
--- a/flutter/lib/desktop/pages/connection_page.dart
+++ b/flutter/lib/desktop/pages/connection_page.dart
@@ -44,13 +44,22 @@ class _ConnectionPageState extends State<ConnectionPage> {
 
   /// Update url. If it's not null, means an update is available.
   var _updateUrl = '';
-  var _menuPos;
 
   Timer? _updateTimer;
 
   @override
   void initState() {
     super.initState();
+    if (_idController.text.isEmpty) {
+      () async {
+        final lastRemoteId = await bind.mainGetLastRemoteId();
+        if (lastRemoteId != _idController.text) {
+          setState(() {
+            _idController.text = lastRemoteId;
+          });
+        }
+      }();
+    }
     _updateTimer = Timer.periodic(Duration(seconds: 1), (timer) {
       updateStatus();
     });
@@ -58,7 +67,6 @@ class _ConnectionPageState extends State<ConnectionPage> {
 
   @override
   Widget build(BuildContext context) {
-    if (_idController.text.isEmpty) _idController.text = gFFI.getId();
     return Container(
       decoration: BoxDecoration(color: isDarkTheme() ? null : MyTheme.grayBg),
       child: Column(
@@ -428,7 +436,7 @@ class _ConnectionPageState extends State<ConnectionPage> {
   }
 
   updateStatus() async {
-    svcStopped.value = gFFI.getOption("stop-service") == "Y";
+    svcStopped.value = bind.mainGetOption(key: "stop-service") == "Y";
     final status =
         jsonDecode(await bind.mainGetConnectStatus()) as Map<String, dynamic>;
     svcStatusCode.value = status["status_num"];
@@ -444,7 +452,7 @@ class _ConnectionPageState extends State<ConnectionPage> {
   }
 
   Future<Widget> buildAddressBook(BuildContext context) async {
-    final token = await gFFI.getLocalOption('access_token');
+    final token = await bind.mainGetLocalOption(key: 'access_token');
     if (token.trim().isEmpty) {
       return Center(
         child: InkWell(
diff --git a/flutter/lib/desktop/pages/desktop_home_page.dart b/flutter/lib/desktop/pages/desktop_home_page.dart
index 6dc5e8f2f..3f908c3ce 100644
--- a/flutter/lib/desktop/pages/desktop_home_page.dart
+++ b/flutter/lib/desktop/pages/desktop_home_page.dart
@@ -7,7 +7,6 @@ import 'package:flutter/services.dart';
 import 'package:flutter_hbb/common.dart';
 import 'package:flutter_hbb/desktop/pages/connection_page.dart';
 import 'package:flutter_hbb/desktop/widgets/titlebar_widget.dart';
-import 'package:flutter_hbb/models/model.dart';
 import 'package:flutter_hbb/models/platform_model.dart';
 import 'package:flutter_hbb/models/server_model.dart';
 import 'package:get/get.dart';
@@ -156,6 +155,8 @@ class _DesktopHomePageState extends State<DesktopHomePage> with TrayListener {
         },
         onTap: () async {
           final userName = await gFFI.userModel.getUserName();
+          final enabledInput = await bind.mainGetOption(key: 'enable-audio');
+          final defaultInput = await gFFI.getDefaultAudioInput();
           var menu = <PopupMenuEntry>[
             genEnablePopupMenuItem(
               translate("Enable Keyboard/Mouse"),
@@ -173,7 +174,7 @@ class _DesktopHomePageState extends State<DesktopHomePage> with TrayListener {
               translate("Enable TCP Tunneling"),
               'enable-tunnel',
             ),
-            genAudioInputPopupMenuItem(),
+            genAudioInputPopupMenuItem(enabledInput != "N", defaultInput),
             PopupMenuDivider(),
             PopupMenuItem(
               child: Text(translate("ID/Relay Server")),
@@ -465,49 +466,60 @@ class _DesktopHomePageState extends State<DesktopHomePage> with TrayListener {
     Get.find<SharedPreferences>().setString("darkTheme", choice);
   }
 
-  void onSelectMenu(String value) {
-    if (value.startsWith('enable-')) {
-      final option = gFFI.getOption(value);
-      gFFI.setOption(value, option == "N" ? "" : "N");
-    } else if (value.startsWith('allow-')) {
-      final option = gFFI.getOption(value);
+  void onSelectMenu(String key) async {
+    if (key.startsWith('enable-')) {
+      final option = await bind.mainGetOption(key: key);
+      bind.mainSetOption(key: key, value: option == "N" ? "" : "N");
+    } else if (key.startsWith('allow-')) {
+      final option = await bind.mainGetOption(key: key);
       final choice = option == "Y" ? "" : "Y";
-      gFFI.setOption(value, choice);
+      bind.mainSetOption(key: key, value: choice);
       changeTheme(choice);
-    } else if (value == "stop-service") {
-      final option = gFFI.getOption(value);
-      gFFI.setOption(value, option == "Y" ? "" : "Y");
-    } else if (value == "change-id") {
+    } else if (key == "stop-service") {
+      final option = await bind.mainGetOption(key: key);
+      bind.mainSetOption(key: key, value: option == "Y" ? "" : "Y");
+    } else if (key == "change-id") {
       changeId();
-    } else if (value == "custom-server") {
+    } else if (key == "custom-server") {
       changeServer();
-    } else if (value == "whitelist") {
+    } else if (key == "whitelist") {
       changeWhiteList();
-    } else if (value == "socks5-proxy") {
+    } else if (key == "socks5-proxy") {
       changeSocks5Proxy();
-    } else if (value == "about") {
+    } else if (key == "about") {
       about();
-    } else if (value == "logout") {
+    } else if (key == "logout") {
       logOut();
-    } else if (value == "login") {
+    } else if (key == "login") {
       login();
     }
   }
 
-  PopupMenuItem<String> genEnablePopupMenuItem(String label, String value) {
-    final v = gFFI.getOption(value);
-    final isEnable = value.startsWith('enable-') ? v != "N" : v == "Y";
+  PopupMenuItem<String> genEnablePopupMenuItem(String label, String key) {
+    Future<bool> getOptionEnable(String key) async {
+      final v = await bind.mainGetOption(key: key);
+      return key.startsWith('enable-') ? v != "N" : v == "Y";
+    }
+
     return PopupMenuItem(
-      child: Row(
-        children: [
-          Offstage(offstage: !isEnable, child: Icon(Icons.check)),
-          Text(
-            label,
-            style: genTextStyle(isEnable),
-          ),
-        ],
-      ),
-      value: value,
+      child: FutureBuilder<bool>(
+          future: getOptionEnable(key),
+          builder: (context, snapshot) {
+            var enable = false;
+            if (snapshot.hasData && snapshot.data!) {
+              enable = true;
+            }
+            return Row(
+              children: [
+                Offstage(offstage: !enable, child: Icon(Icons.check)),
+                Text(
+                  label,
+                  style: genTextStyle(enable),
+                ),
+              ],
+            );
+          }),
+      value: key,
     );
   }
 
@@ -518,10 +530,11 @@ class _DesktopHomePageState extends State<DesktopHomePage> with TrayListener {
             color: Colors.redAccent, decoration: TextDecoration.lineThrough);
   }
 
-  PopupMenuItem<String> genAudioInputPopupMenuItem() {
-    final _enabledInput = gFFI.getOption('enable-audio');
-    var defaultInput = gFFI.getDefaultAudioInput().obs;
-    var enabled = (_enabledInput != "N").obs;
+  PopupMenuItem<String> genAudioInputPopupMenuItem(
+      bool enableInput, String defaultAudioInput) {
+    final defaultInput = defaultAudioInput.obs;
+    final enabled = enableInput.obs;
+
     return PopupMenuItem(
       child: FutureBuilder<List<String>>(
         future: gFFI.getAudioInputs(),
@@ -569,12 +582,13 @@ class _DesktopHomePageState extends State<DesktopHomePage> with TrayListener {
                   alignment: Alignment.centerLeft,
                   child: Text(translate("Audio Input"))),
               itemBuilder: (context) => inputList,
-              onSelected: (dev) {
+              onSelected: (dev) async {
                 if (dev == "Mute") {
-                  gFFI.setOption(
-                      'enable-audio', _enabledInput == 'N' ? '' : 'N');
-                  enabled.value = gFFI.getOption('enable-audio') != 'N';
-                } else if (dev != gFFI.getDefaultAudioInput()) {
+                  await bind.mainSetOption(
+                      key: 'enable-audio', value: enabled.value ? '' : 'N');
+                  enabled.value =
+                      await bind.mainGetOption(key: 'enable-audio') != 'N';
+                } else if (dev != await gFFI.getDefaultAudioInput()) {
                   gFFI.setDefaultAudioInput(dev);
                   defaultInput.value = dev;
                 }
diff --git a/flutter/lib/desktop/widgets/peercard_widget.dart b/flutter/lib/desktop/widgets/peercard_widget.dart
index 0782e8426..949c46234 100644
--- a/flutter/lib/desktop/widgets/peercard_widget.dart
+++ b/flutter/lib/desktop/widgets/peercard_widget.dart
@@ -89,7 +89,8 @@ class _PeerCardState extends State<_PeerCard>
                             children: [
                               Expanded(
                                 child: FutureBuilder<String>(
-                                  future: gFFI.getPeerOption(peer.id, 'alias'),
+                                  future: bind.mainGetPeerOption(
+                                      id: peer.id, key: 'alias'),
                                   builder: (_, snapshot) {
                                     if (snapshot.hasData) {
                                       final name = snapshot.data!.isEmpty
@@ -304,7 +305,7 @@ class _PeerCardState extends State<_PeerCard>
 
   void _rename(String id) async {
     var isInProgress = false;
-    var name = await gFFI.getPeerOption(id, 'alias');
+    var name = await bind.mainGetPeerOption(id: id, key: 'alias');
     if (widget.type == PeerType.ab) {
       final peer = gFFI.abModel.peers.firstWhere((p) => id == p['id']);
       if (peer == null) {
@@ -359,7 +360,8 @@ class _PeerCardState extends State<_PeerCard>
                 if (k.currentState != null) {
                   if (k.currentState!.validate()) {
                     k.currentState!.save();
-                    await gFFI.setPeerOption(id, 'alias', name);
+                    await bind.mainSetPeerOption(
+                        id: id, key: 'alias', value: name);
                     if (widget.type == PeerType.ab) {
                       gFFI.abModel.setPeerOption(id, 'alias', name);
                       await gFFI.abModel.updateAb();
diff --git a/flutter/lib/mobile/pages/connection_page.dart b/flutter/lib/mobile/pages/connection_page.dart
index 9722b1a47..69e7b9433 100644
--- a/flutter/lib/mobile/pages/connection_page.dart
+++ b/flutter/lib/mobile/pages/connection_page.dart
@@ -7,6 +7,8 @@ import 'package:url_launcher/url_launcher.dart';
 
 import '../../common.dart';
 import '../../models/model.dart';
+import '../../models/peer_model.dart';
+import '../../models/platform_model.dart';
 import 'home_page.dart';
 import 'remote_page.dart';
 import 'scan_page.dart';
@@ -41,6 +43,16 @@ class _ConnectionPageState extends State<ConnectionPage> {
   @override
   void initState() {
     super.initState();
+    if (_idController.text.isEmpty) {
+      () async {
+        final lastRemoteId = await bind.mainGetLastRemoteId();
+        if (lastRemoteId != _idController.text) {
+          setState(() {
+            _idController.text = lastRemoteId;
+          });
+        }
+      }();
+    }
     if (isAndroid) {
       Timer(Duration(seconds: 5), () {
         _updateUrl = gFFI.getByName('software_update_url');
@@ -52,7 +64,6 @@ class _ConnectionPageState extends State<ConnectionPage> {
   @override
   Widget build(BuildContext context) {
     Provider.of<FfiModel>(context);
-    if (_idController.text.isEmpty) _idController.text = gFFI.getId();
     return SingleChildScrollView(
       child: Column(
           mainAxisAlignment: MainAxisAlignment.start,
@@ -221,44 +232,52 @@ class _ConnectionPageState extends State<ConnectionPage> {
       final n = (windowWidth / (minWidth + 2 * space)).floor();
       width = windowWidth / n - 2 * space;
     }
-    final cards = <Widget>[];
-    var peers = gFFI.peers();
-    peers.forEach((p) {
-      cards.add(Container(
-          width: width,
-          child: Card(
-              child: GestureDetector(
-                  onTap: !isWebDesktop ? () => connect('${p.id}') : null,
-                  onDoubleTap: isWebDesktop ? () => connect('${p.id}') : null,
-                  onLongPressStart: (details) {
-                    final x = details.globalPosition.dx;
-                    final y = details.globalPosition.dy;
-                    _menuPos = RelativeRect.fromLTRB(x, y, x, y);
-                    showPeerMenu(context, p.id);
-                  },
-                  child: ListTile(
-                    contentPadding: const EdgeInsets.only(left: 12),
-                    subtitle: Text('${p.username}@${p.hostname}'),
-                    title: Text('${p.id}'),
-                    leading: Container(
-                        padding: const EdgeInsets.all(6),
-                        child: getPlatformImage('${p.platform}'),
-                        color: str2color('${p.id}${p.platform}', 0x7f)),
-                    trailing: InkWell(
-                        child: Padding(
-                            padding: const EdgeInsets.all(12),
-                            child: Icon(Icons.more_vert)),
-                        onTapDown: (e) {
-                          final x = e.globalPosition.dx;
-                          final y = e.globalPosition.dy;
-                          _menuPos = RelativeRect.fromLTRB(x, y, x, y);
-                        },
-                        onTap: () {
-                          showPeerMenu(context, p.id);
-                        }),
-                  )))));
-    });
-    return Wrap(children: cards, spacing: space, runSpacing: space);
+    return FutureBuilder<List<Peer>>(
+        future: gFFI.peers(),
+        builder: (context, snapshot) {
+          final cards = <Widget>[];
+          if (snapshot.hasData) {
+            final peers = snapshot.data!;
+            peers.forEach((p) {
+              cards.add(Container(
+                  width: width,
+                  child: Card(
+                      child: GestureDetector(
+                          onTap:
+                              !isWebDesktop ? () => connect('${p.id}') : null,
+                          onDoubleTap:
+                              isWebDesktop ? () => connect('${p.id}') : null,
+                          onLongPressStart: (details) {
+                            final x = details.globalPosition.dx;
+                            final y = details.globalPosition.dy;
+                            _menuPos = RelativeRect.fromLTRB(x, y, x, y);
+                            showPeerMenu(context, p.id);
+                          },
+                          child: ListTile(
+                            contentPadding: const EdgeInsets.only(left: 12),
+                            subtitle: Text('${p.username}@${p.hostname}'),
+                            title: Text('${p.id}'),
+                            leading: Container(
+                                padding: const EdgeInsets.all(6),
+                                child: getPlatformImage('${p.platform}'),
+                                color: str2color('${p.id}${p.platform}', 0x7f)),
+                            trailing: InkWell(
+                                child: Padding(
+                                    padding: const EdgeInsets.all(12),
+                                    child: Icon(Icons.more_vert)),
+                                onTapDown: (e) {
+                                  final x = e.globalPosition.dx;
+                                  final y = e.globalPosition.dy;
+                                  _menuPos = RelativeRect.fromLTRB(x, y, x, y);
+                                },
+                                onTap: () {
+                                  showPeerMenu(context, p.id);
+                                }),
+                          )))));
+            });
+          }
+          return Wrap(children: cards, spacing: space, runSpacing: space);
+        });
   }
 
   /// Show the peer menu and handle user's choice.
diff --git a/flutter/lib/mobile/pages/scan_page.dart b/flutter/lib/mobile/pages/scan_page.dart
index 2f5a9d991..54ba44892 100644
--- a/flutter/lib/mobile/pages/scan_page.dart
+++ b/flutter/lib/mobile/pages/scan_page.dart
@@ -9,7 +9,7 @@ import 'package:qr_code_scanner/qr_code_scanner.dart';
 import 'package:zxing2/qrcode.dart';
 
 import '../../common.dart';
-import '../../models/model.dart';
+import '../../models/platform_model.dart';
 
 class ScanPage extends StatefulWidget {
   @override
@@ -153,54 +153,80 @@ class _ScanPageState extends State<ScanPage> {
 }
 
 void showServerSettingsWithValue(
-    String id, String relay, String key, String api) {
-  final formKey = GlobalKey<FormState>();
-  final id0 = gFFI.getByName('option', 'custom-rendezvous-server');
-  final relay0 = gFFI.getByName('option', 'relay-server');
-  final api0 = gFFI.getByName('option', 'api-server');
-  final key0 = gFFI.getByName('option', 'key');
+    String id, String relay, String key, String api) async {
+  Map<String, dynamic> oldOptions = jsonDecode(await bind.mainGetOptions());
+  String id0 = oldOptions['custom-rendezvous-server'] ?? "";
+  String relay0 = oldOptions['relay-server'] ?? "";
+  String api0 = oldOptions['api-server'] ?? "";
+  String key0 = oldOptions['key'] ?? "";
+  var isInProgress = false;
+  final idController = TextEditingController(text: id);
+  final relayController = TextEditingController(text: relay);
+  final apiController = TextEditingController(text: api);
+
+  String? idServerMsg;
+  String? relayServerMsg;
+  String? apiServerMsg;
+
   DialogManager.show((setState, close) {
+    Future<bool> validate() async {
+      if (idController.text != id) {
+        final res = await validateAsync(idController.text);
+        setState(() => idServerMsg = res);
+        if (idServerMsg != null) return false;
+        id = idController.text;
+      }
+      if (relayController.text != relay) {
+        relayServerMsg = await validateAsync(relayController.text);
+        if (relayServerMsg != null) return false;
+        relay = relayController.text;
+      }
+      if (apiController.text != relay) {
+        apiServerMsg = await validateAsync(apiController.text);
+        if (apiServerMsg != null) return false;
+        api = apiController.text;
+      }
+      return true;
+    }
+
     return CustomAlertDialog(
       title: Text(translate('ID/Relay Server')),
       content: Form(
-          key: formKey,
           child: Column(
               mainAxisSize: MainAxisSize.min,
               children: <Widget>[
                     TextFormField(
-                      initialValue: id,
+                      controller: idController,
                       decoration: InputDecoration(
-                        labelText: translate('ID Server'),
-                      ),
-                      validator: validate,
-                      onSaved: (String? value) {
-                        if (value != null) id = value.trim();
-                      },
+                          labelText: translate('ID Server'),
+                          errorText: idServerMsg),
                     )
                   ] +
                   (isAndroid
                       ? [
                           TextFormField(
-                            initialValue: relay,
+                            controller: relayController,
                             decoration: InputDecoration(
-                              labelText: translate('Relay Server'),
-                            ),
-                            validator: validate,
-                            onSaved: (String? value) {
-                              if (value != null) relay = value.trim();
-                            },
+                                labelText: translate('Relay Server'),
+                                errorText: relayServerMsg),
                           )
                         ]
                       : []) +
                   [
                     TextFormField(
-                      initialValue: api,
+                      controller: apiController,
                       decoration: InputDecoration(
                         labelText: translate('API Server'),
                       ),
-                      validator: validate,
-                      onSaved: (String? value) {
-                        if (value != null) api = value.trim();
+                      autovalidateMode: AutovalidateMode.onUserInteraction,
+                      validator: (v) {
+                        if (v != null && v.length > 0) {
+                          if (!(v.startsWith('http://') ||
+                              v.startsWith("https://"))) {
+                            return translate("invalid_http");
+                          }
+                        }
+                        return apiServerMsg;
                       },
                     ),
                     TextFormField(
@@ -208,11 +234,13 @@ void showServerSettingsWithValue(
                       decoration: InputDecoration(
                         labelText: 'Key',
                       ),
-                      validator: null,
-                      onSaved: (String? value) {
+                      onChanged: (String? value) {
                         if (value != null) key = value.trim();
                       },
                     ),
+                    Offstage(
+                        offstage: !isInProgress,
+                        child: LinearProgressIndicator())
                   ])),
       actions: [
         TextButton(
@@ -224,24 +252,28 @@ void showServerSettingsWithValue(
         ),
         TextButton(
           style: flatButtonStyle,
-          onPressed: () {
-            if (formKey.currentState != null &&
-                formKey.currentState!.validate()) {
-              formKey.currentState!.save();
-              if (id != id0)
-                gFFI.setByName('option',
-                    '{"name": "custom-rendezvous-server", "value": "$id"}');
+          onPressed: () async {
+            setState(() {
+              idServerMsg = null;
+              relayServerMsg = null;
+              apiServerMsg = null;
+              isInProgress = true;
+            });
+            if (await validate()) {
+              if (id != id0) {
+                bind.mainSetOption(key: "custom-rendezvous-server", value: id);
+              }
               if (relay != relay0)
-                gFFI.setByName(
-                    'option', '{"name": "relay-server", "value": "$relay"}');
-              if (key != key0)
-                gFFI.setByName('option', '{"name": "key", "value": "$key"}');
+                bind.mainSetOption(key: "relay-server", value: relay);
+              if (key != key0) bind.mainSetOption(key: "key", value: key);
               if (api != api0)
-                gFFI.setByName(
-                    'option', '{"name": "api-server", "value": "$api"}');
+                bind.mainSetOption(key: "api-server", value: api);
               gFFI.ffiModel.updateUser();
               close();
             }
+            setState(() {
+              isInProgress = false;
+            });
           },
           child: Text(translate('OK')),
         ),
@@ -250,11 +282,11 @@ void showServerSettingsWithValue(
   });
 }
 
-String? validate(value) {
+Future<String?> validateAsync(String value) async {
   value = value.trim();
   if (value.isEmpty) {
     return null;
   }
-  final res = gFFI.getByName('test_if_valid_server', value);
+  final res = await bind.mainTestIfValidServer(server: value);
   return res.isEmpty ? null : res;
 }
diff --git a/flutter/lib/mobile/pages/settings_page.dart b/flutter/lib/mobile/pages/settings_page.dart
index 01cf4ae5d..3646b59e9 100644
--- a/flutter/lib/mobile/pages/settings_page.dart
+++ b/flutter/lib/mobile/pages/settings_page.dart
@@ -185,11 +185,12 @@ class _SettingsState extends State<SettingsPage> with WidgetsBindingObserver {
   }
 }
 
-void showServerSettings() {
-  final id = gFFI.getByName('option', 'custom-rendezvous-server');
-  final relay = gFFI.getByName('option', 'relay-server');
-  final api = gFFI.getByName('option', 'api-server');
-  final key = gFFI.getByName('option', 'key');
+void showServerSettings() async {
+  Map<String, dynamic> options = jsonDecode(await bind.mainGetOptions());
+  String id = options['custom-rendezvous-server'] ?? "";
+  String relay = options['relay-server'] ?? "";
+  String api = options['api-server'] ?? "";
+  String key = options['key'] ?? "";
   showServerSettingsWithValue(id, relay, key, api);
 }
 
diff --git a/flutter/lib/models/chat_model.dart b/flutter/lib/models/chat_model.dart
index ad572c164..28ffa65e2 100644
--- a/flutter/lib/models/chat_model.dart
+++ b/flutter/lib/models/chat_model.dart
@@ -2,6 +2,7 @@ import 'dart:convert';
 
 import 'package:dash_chat_2/dash_chat_2.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_hbb/models/platform_model.dart';
 
 import '../../mobile/widgets/overlay.dart';
 import 'model.dart';
@@ -72,7 +73,7 @@ class ChatModel with ChangeNotifier {
     }
   }
 
-  receive(int id, String text) {
+  receive(int id, String text) async {
     if (text.isEmpty) return;
     // first message show overlay icon
     if (chatIconOverlayEntry == null) {
@@ -82,7 +83,7 @@ class ChatModel with ChangeNotifier {
     if (id == clientModeID) {
       chatUser = ChatUser(
         firstName: _ffi.target?.ffiModel.pi.username,
-        id: _ffi.target?.getId() ?? "",
+        id: await bind.mainGetLastRemoteId(),
       );
     } else {
       final client = _ffi.target?.serverModel.clients[id];
diff --git a/flutter/lib/models/file_model.dart b/flutter/lib/models/file_model.dart
index 459e8c448..45f5ec970 100644
--- a/flutter/lib/models/file_model.dart
+++ b/flutter/lib/models/file_model.dart
@@ -444,7 +444,7 @@ class FileModel extends ChangeNotifier {
       items.items.forEach((from) async {
         _jobId++;
         await bind.sessionSendFiles(
-            id: '${_ffi.target?.getId()}',
+            id: await bind.mainGetLastRemoteId(),
             actId: _jobId,
             path: from.path,
             to: PathUtil.join(toPath, from.name, isWindows),
diff --git a/flutter/lib/models/model.dart b/flutter/lib/models/model.dart
index f67d0d5fa..7ca77f6cd 100644
--- a/flutter/lib/models/model.dart
+++ b/flutter/lib/models/model.dart
@@ -881,11 +881,6 @@ class FFI {
     this.qualityMonitorModel = QualityMonitorModel(WeakReference(this));
   }
 
-  /// Get the remote id for current client.
-  String getId() {
-    return getByName('remote_id'); // TODO
-  }
-
   /// Send a mouse tap event(down and up).
   void tap(MouseButtons button) {
     sendMouse('down', button);
@@ -963,9 +958,9 @@ class FFI {
   }
 
   /// List the saved peers.
-  List<Peer> peers() {
+  Future<List<Peer>> peers() async {
     try {
-      var str = getByName('peers'); // TODO
+      var str = await bind.mainGetRecentPeers();
       if (str == "") return [];
       List<dynamic> peers = json.decode(str);
       return peers
@@ -1046,33 +1041,6 @@ class FFI {
     platformFFI.setByName(name, value);
   }
 
-  String getOption(String name) {
-    return platformFFI.getByName("option", name);
-  }
-
-  Future<String> getLocalOption(String name) {
-    return bind.mainGetLocalOption(key: name);
-  }
-
-  Future<void> setLocalOption(String key, String value) {
-    return bind.mainSetLocalOption(key: key, value: value);
-  }
-
-  Future<String> getPeerOption(String id, String key) {
-    return bind.mainGetPeerOption(id: id, key: key);
-  }
-
-  Future<void> setPeerOption(String id, String key, String value) {
-    return bind.mainSetPeerOption(id: id, key: key, value: value);
-  }
-
-  void setOption(String name, String value) {
-    Map<String, String> res = Map()
-      ..["name"] = name
-      ..["value"] = value;
-    return platformFFI.setByName('option', jsonEncode(res));
-  }
-
   handleMouse(Map<String, dynamic> evt, {double tabBarHeight = 0.0}) {
     var type = '';
     var isMove = false;
@@ -1148,8 +1116,8 @@ class FFI {
     return await bind.mainGetSoundInputs();
   }
 
-  String getDefaultAudioInput() {
-    final input = getOption('audio-input');
+  Future<String> getDefaultAudioInput() async {
+    final input = await bind.mainGetOption(key: 'audio-input');
     if (input.isEmpty && Platform.isWindows) {
       return "System Sound";
     }
@@ -1157,11 +1125,14 @@ class FFI {
   }
 
   void setDefaultAudioInput(String input) {
-    setOption('audio-input', input);
+    bind.mainSetOption(key: 'audio-input', value: input);
   }
 
   Future<Map<String, String>> getHttpHeaders() async {
-    return {"Authorization": "Bearer " + await getLocalOption("access_token")};
+    return {
+      "Authorization":
+          "Bearer " + await bind.mainGetLocalOption(key: "access_token")
+    };
   }
 }
 
@@ -1233,11 +1204,12 @@ void initializeCursorAndCanvas(FFI ffi) async {
 /// Translate text based on the pre-defined dictionary.
 /// note: params [FFI?] can be used to replace global FFI implementation
 /// for example: during global initialization, gFFI not exists yet.
-String translate(String name, {FFI? ffi}) {
-  if (name.startsWith('Failed to') && name.contains(': ')) {
-    return name.split(': ').map((x) => translate(x)).join(': ');
-  }
-  var a = 'translate';
-  var b = '{"locale": "$localeName", "text": "$name"}';
-  return (ffi ?? gFFI).getByName(a, b);
-}
+// String translate(String name, {FFI? ffi}) {
+//   if (name.startsWith('Failed to') && name.contains(': ')) {
+//     return name.split(': ').map((x) => translate(x)).join(': ');
+//   }
+//   var a = 'translate';
+//   var b = '{"locale": "$localeName", "text": "$name"}';
+//
+//   return (ffi ?? gFFI).getByName(a, b);
+// }
diff --git a/flutter/lib/models/native_model.dart b/flutter/lib/models/native_model.dart
index 784ffe6c8..c58577945 100644
--- a/flutter/lib/models/native_model.dart
+++ b/flutter/lib/models/native_model.dart
@@ -29,6 +29,7 @@ typedef HandleEvent = void Function(Map<String, dynamic> evt);
 class PlatformFFI {
   String _dir = '';
   String _homeDir = '';
+  F2? _translate;
   F2? _getByName;
   F3? _setByName;
   var _eventHandlers = Map<String, Map<String, HandleEvent>>();
@@ -75,6 +76,19 @@ class PlatformFFI {
     }
   }
 
+  String translate(String name, String locale) {
+    if (_translate == null) return '';
+    var a = name.toNativeUtf8();
+    var b = locale.toNativeUtf8();
+    var p = _translate!(a, b);
+    assert(p != nullptr);
+    final res = p.toDartString();
+    calloc.free(p);
+    calloc.free(a);
+    calloc.free(b);
+    return res;
+  }
+
   /// Send **get** command to the Rust core based on [name] and [arg].
   /// Return the result as a string.
   String getByName(String name, [String arg = '']) {
@@ -118,6 +132,7 @@ class PlatformFFI {
                     : DynamicLibrary.process();
     debugPrint('initializing FFI ${_appType}');
     try {
+      _translate = dylib.lookupFunction<F2, F2>('translate');
       _getByName = dylib.lookupFunction<F2, F2>('get_by_name');
       _setByName =
           dylib.lookupFunction<Void Function(Pointer<Utf8>, Pointer<Utf8>), F3>(
diff --git a/flutter/lib/models/server_model.dart b/flutter/lib/models/server_model.dart
index c9147441e..362e47a78 100644
--- a/flutter/lib/models/server_model.dart
+++ b/flutter/lib/models/server_model.dart
@@ -3,6 +3,7 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
+import 'package:flutter_hbb/models/platform_model.dart';
 import 'package:wakelock/wakelock.dart';
 
 import '../common.dart';
@@ -57,7 +58,7 @@ class ServerModel with ChangeNotifier {
 
   set verificationMethod(String method) {
     _verificationMethod = method;
-    gFFI.setOption("verification-method", method);
+    bind.mainSetOption(key: "verification-method", value: method);
   }
 
   String get temporaryPasswordLength {
@@ -70,7 +71,7 @@ class ServerModel with ChangeNotifier {
 
   set temporaryPasswordLength(String length) {
     _temporaryPasswordLength = length;
-    gFFI.setOption("temporary-password-length", length);
+    bind.mainSetOption(key: "temporary-password-length", value: length);
   }
 
   TextEditingController get serverId => _serverId;
@@ -85,7 +86,7 @@ class ServerModel with ChangeNotifier {
 
   ServerModel(this.parent) {
     () async {
-      _emptyIdShow = translate("Generating ...", ffi: this.parent.target);
+      _emptyIdShow = translate("Generating ...");
       _serverId = TextEditingController(text: this._emptyIdShow);
       /**
        * 1. check android permission
@@ -153,11 +154,13 @@ class ServerModel with ChangeNotifier {
     });
   }
 
-  updatePasswordModel() {
+  updatePasswordModel() async {
     var update = false;
     final temporaryPassword = gFFI.getByName("temporary_password");
-    final verificationMethod = gFFI.getOption("verification-method");
-    final temporaryPasswordLength = gFFI.getOption("temporary-password-length");
+    final verificationMethod =
+        await bind.mainGetOption(key: "verification-method");
+    final temporaryPasswordLength =
+        await bind.mainGetOption(key: "temporary-password-length");
     final oldPwdText = _serverPasswd.text;
     if (_serverPasswd.text != temporaryPassword) {
       _serverPasswd.text = temporaryPassword;
@@ -325,7 +328,7 @@ class ServerModel with ChangeNotifier {
     const maxCount = 10;
     while (count < maxCount) {
       await Future.delayed(Duration(seconds: 1));
-      final id = parent.target?.getByName("server_id") ?? "";
+      final id = await bind.mainGetMyId();
       if (id.isEmpty) {
         continue;
       } else {
diff --git a/flutter/lib/utils/tray_manager.dart b/flutter/lib/utils/tray_manager.dart
index d911932e5..f0422f554 100644
--- a/flutter/lib/utils/tray_manager.dart
+++ b/flutter/lib/utils/tray_manager.dart
@@ -1,8 +1,9 @@
 import 'dart:io';
 
-import 'package:flutter_hbb/models/model.dart';
 import 'package:tray_manager/tray_manager.dart';
 
+import '../common.dart';
+
 Future<void> initTray({List<MenuItem>? extra_item}) async {
   List<MenuItem> items = [
     MenuItem(key: "show", label: translate("show rustdesk")),
diff --git a/src/flutter_ffi.rs b/src/flutter_ffi.rs
index 904912715..40f72444a 100644
--- a/src/flutter_ffi.rs
+++ b/src/flutter_ffi.rs
@@ -23,10 +23,10 @@ use crate::ui_interface;
 use crate::ui_interface::{change_id, check_connect_status, is_ok_change_id};
 use crate::ui_interface::{
     discover, forget_password, get_api_server, get_app_name, get_async_job_status,
-    get_connect_status, get_fav, get_id, get_lan_peers, get_license, get_local_option, get_options,
-    get_peer, get_peer_option, get_socks, get_sound_inputs, get_uuid, get_version,
-    has_rendezvous_service, post_request, set_local_option, set_options, set_peer_option,
-    set_socks, store_fav, test_if_valid_server, using_public_server,
+    get_connect_status, get_fav, get_id, get_lan_peers, get_license, get_local_option, get_option,
+    get_options, get_peer, get_peer_option, get_socks, get_sound_inputs, get_uuid, get_version,
+    has_rendezvous_service, post_request, set_local_option, set_option, set_options,
+    set_peer_option, set_socks, store_fav, test_if_valid_server, using_public_server,
 };
 
 fn initialize(app_dir: &str) {
@@ -81,14 +81,24 @@ pub enum EventToUI {
 }
 
 pub fn start_global_event_stream(s: StreamSink<String>, app_type: String) -> ResultType<()> {
-    if let Some(_) = flutter::GLOBAL_EVENT_STREAM.write().unwrap().insert(app_type.clone(), s) {
-        log::warn!("Global event stream of type {} is started before, but now removed", app_type);
+    if let Some(_) = flutter::GLOBAL_EVENT_STREAM
+        .write()
+        .unwrap()
+        .insert(app_type.clone(), s)
+    {
+        log::warn!(
+            "Global event stream of type {} is started before, but now removed",
+            app_type
+        );
     }
     Ok(())
 }
 
 pub fn stop_global_event_stream(app_type: String) {
-    let _ = flutter::GLOBAL_EVENT_STREAM.write().unwrap().remove(&app_type);
+    let _ = flutter::GLOBAL_EVENT_STREAM
+        .write()
+        .unwrap()
+        .remove(&app_type);
 }
 
 pub fn host_stop_system_key_propagate(stopped: bool) {
@@ -113,7 +123,6 @@ pub fn get_session_remember(id: String) -> Option<bool> {
     }
 }
 
-// TODO sync
 pub fn get_session_toggle_option(id: String, arg: String) -> Option<bool> {
     if let Some(session) = SESSIONS.read().unwrap().get(&id) {
         Some(session.get_toggle_option(&arg))
@@ -143,7 +152,6 @@ pub fn get_session_option(id: String, arg: String) -> Option<String> {
     }
 }
 
-// void
 pub fn session_login(id: String, password: String, remember: bool) {
     if let Some(session) = SESSIONS.read().unwrap().get(&id) {
         session.login(&password, remember);
@@ -409,6 +417,26 @@ pub fn main_get_async_status() -> String {
     get_async_job_status()
 }
 
+pub fn main_get_option(key: String) -> String {
+    get_option(key)
+}
+
+pub fn main_set_option(key: String, value: String) {
+    if key.eq("custom-rendezvous-server") {
+        set_option(key, value);
+        #[cfg(target_os = "android")]
+        crate::rendezvous_mediator::RendezvousMediator::restart();
+        #[cfg(any(
+            target_os = "android",
+            target_os = "ios",
+            feature = "cli"
+        ))]
+        crate::common::test_rendezvous_server();
+    } else {
+        set_option(key, value);
+    }
+}
+
 pub fn main_get_options() -> String {
     get_options()
 }
@@ -452,7 +480,7 @@ pub fn main_store_fav(favs: Vec<String>) {
     store_fav(favs)
 }
 
-pub fn main_get_peers(id: String) -> String {
+pub fn main_get_peer(id: String) -> String {
     let conf = get_peer(id);
     serde_json::to_string(&conf).unwrap_or("".to_string())
 }
@@ -525,13 +553,30 @@ pub fn main_forget_password(id: String) {
     forget_password(id)
 }
 
+// TODO APP_DIR & ui_interface
+pub fn main_get_recent_peers() -> String {
+    if !config::APP_DIR.read().unwrap().is_empty() {
+        let peers: Vec<(String, config::PeerInfoSerde)> = PeerConfig::peers()
+            .drain(..)
+            .map(|(id, _, p)| (id, p.info))
+            .collect();
+        serde_json::ser::to_string(&peers).unwrap_or("".to_owned())
+    } else {
+        String::new()
+    }
+}
+
 pub fn main_load_recent_peers() {
     if !config::APP_DIR.read().unwrap().is_empty() {
         let peers: Vec<(String, config::PeerInfoSerde)> = PeerConfig::peers()
             .drain(..)
             .map(|(id, _, p)| (id, p.info))
             .collect();
-        if let Some(s) = flutter::GLOBAL_EVENT_STREAM.read().unwrap().get(flutter::APP_TYPE_MAIN) {
+        if let Some(s) = flutter::GLOBAL_EVENT_STREAM
+            .read()
+            .unwrap()
+            .get(flutter::APP_TYPE_MAIN)
+        {
             let data = HashMap::from([
                 ("name", "load_recent_peers".to_owned()),
                 (
@@ -557,7 +602,11 @@ pub fn main_load_fav_peers() {
                 }
             })
             .collect();
-        if let Some(s) = flutter::GLOBAL_EVENT_STREAM.read().unwrap().get(flutter::APP_TYPE_MAIN) {
+        if let Some(s) = flutter::GLOBAL_EVENT_STREAM
+            .read()
+            .unwrap()
+            .get(flutter::APP_TYPE_MAIN)
+        {
             let data = HashMap::from([
                 ("name", "load_fav_peers".to_owned()),
                 (
@@ -571,7 +620,11 @@ pub fn main_load_fav_peers() {
 }
 
 pub fn main_load_lan_peers() {
-    if let Some(s) = flutter::GLOBAL_EVENT_STREAM.read().unwrap().get(flutter::APP_TYPE_MAIN) {
+    if let Some(s) = flutter::GLOBAL_EVENT_STREAM
+        .read()
+        .unwrap()
+        .get(flutter::APP_TYPE_MAIN)
+    {
         let data = HashMap::from([
             ("name", "load_lan_peers".to_owned()),
             ("peers", get_lan_peers()),
@@ -580,6 +633,25 @@ pub fn main_load_lan_peers() {
     };
 }
 
+pub fn main_get_last_remote_id() -> String {
+    // if !config::APP_DIR.read().unwrap().is_empty() {
+    //     res = LocalConfig::get_remote_id();
+    // }
+    LocalConfig::get_remote_id()
+}
+
+#[no_mangle]
+unsafe extern "C" fn translate(name: *const c_char, locale: *const c_char) -> *const c_char {
+    let name = CStr::from_ptr(name);
+    let locale = CStr::from_ptr(locale);
+    let res = if let (Ok(name), Ok(locale)) = (name.to_str(), locale.to_str()) {
+        crate::client::translate_locale(name.to_owned(), locale)
+    } else {
+        String::new()
+    };
+    CString::from_vec_unchecked(res.into_bytes()).into_raw()
+}
+
 /// FFI for **get** commands which are idempotent.
 /// Return result in c string.
 ///
@@ -594,93 +666,41 @@ unsafe extern "C" fn get_by_name(name: *const c_char, arg: *const c_char) -> *co
     let name: &CStr = CStr::from_ptr(name);
     if let Ok(name) = name.to_str() {
         match name {
-            "peers" => {
-                if !config::APP_DIR.read().unwrap().is_empty() {
-                    let peers: Vec<(String, config::PeerInfoSerde)> = PeerConfig::peers()
-                        .drain(..)
-                        .map(|(id, _, p)| (id, p.info))
-                        .collect();
-                    res = serde_json::ser::to_string(&peers).unwrap_or("".to_owned());
-                }
-            }
-            "remote_id" => {
-                if !config::APP_DIR.read().unwrap().is_empty() {
-                    res = LocalConfig::get_remote_id();
-                }
-            }
-            // "remember" => {
-            //     res = Session::get_remember().to_string();
-            // }
-            // "toggle_option" => {
-            //     if let Ok(arg) = arg.to_str() {
-            //         if let Some(v) = Session::get_toggle_option(arg) {
-            //             res = v.to_string();
-            //         }
+            // "peers" => {
+            //     if !config::APP_DIR.read().unwrap().is_empty() {
+            //         let peers: Vec<(String, config::PeerInfoSerde)> = PeerConfig::peers()
+            //             .drain(..)
+            //             .map(|(id, _, p)| (id, p.info))
+            //             .collect();
+            //         res = serde_json::ser::to_string(&peers).unwrap_or("".to_owned());
             //     }
             // }
-            "test_if_valid_server" => {
-                if let Ok(arg) = arg.to_str() {
-                    res = hbb_common::socket_client::test_if_valid_server(arg);
-                }
-            }
-            "option" => {
-                if let Ok(arg) = arg.to_str() {
-                    res = ui_interface::get_option(arg.to_owned());
-                }
-            }
-            // "image_quality" => {
-            //     res = Session::get_image_quality();
+            // "remote_id" => {
+            //     if !config::APP_DIR.read().unwrap().is_empty() {
+            //         res = LocalConfig::get_remote_id();
+            //     }
+            // }
+            // "test_if_valid_server" => {
+            //     if let Ok(arg) = arg.to_str() {
+            //         res = hbb_common::socket_client::test_if_valid_server(arg);
+            //     }
+            // }
+            // "option" => {
+            //     if let Ok(arg) = arg.to_str() {
+            //         res = ui_interface::get_option(arg.to_owned());
+            //     }
             // }
             "software_update_url" => {
                 res = crate::common::SOFTWARE_UPDATE_URL.lock().unwrap().clone()
             }
-            "translate" => {
-                if let Ok(arg) = arg.to_str() {
-                    if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(arg) {
-                        if let Some(locale) = m.get("locale") {
-                            if let Some(text) = m.get("text") {
-                                res = crate::client::translate_locale(text.to_owned(), locale);
-                            }
-                        }
-                    }
-                }
-            }
-            // "peer_option" => {
-            //     if let Ok(arg) = arg.to_str() {
-            //         res = Session::get_option(arg);
-            //     }
-            // }
             // File Action
             "get_home_dir" => {
                 res = fs::get_home_as_string();
             }
-            // "read_local_dir_sync" => {
-            //     if let Ok(value) = arg.to_str() {
-            //         if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-            //             if let (Some(path), Some(show_hidden)) =
-            //                 (m.get("path"), m.get("show_hidden"))
-            //             {
-            //                 if let Ok(fd) =
-            //                     fs::read_dir(&fs::get_path(path), show_hidden.eq("true"))
-            //                 {
-            //                     res = make_fd_to_json(fd);
-            //                 }
-            //             }
-            //         }
-            //     }
-            // }
             // Server Side
-            "local_option" => {
-                if let Ok(arg) = arg.to_str() {
-                    res = LocalConfig::get_option(arg);
-                }
-            }
             "langs" => {
                 res = crate::lang::LANGS.to_string();
             }
-            "server_id" => {
-                res = ui_interface::get_id();
-            }
             "temporary_password" => {
                 res = ui_interface::temporary_password();
             }
@@ -709,9 +729,6 @@ unsafe extern "C" fn get_by_name(name: *const c_char, arg: *const c_char) -> *co
                     }
                 }
             }
-            "uuid" => {
-                res = base64::encode(get_uuid());
-            }
             _ => {
                 log::error!("Unknown name of get_by_name: {}", name);
             }
@@ -742,69 +759,9 @@ unsafe extern "C" fn set_by_name(name: *const c_char, value: *const c_char) {
                 "info2" => {
                     *crate::common::FLUTTER_INFO2.lock().unwrap() = value.to_owned();
                 }
-                // "connect" => {
-                //     Session::start(value, false);
-                // }
-                // "connect_file_transfer" => {
-                //     Session::start(value, true);
-                // }
-                // "login" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let Some(password) = m.get("password") {
-                //             if let Some(remember) = m.get("remember") {
-                //                 Session::login(password, remember == "true");
-                //             }
-                //         }
-                //     }
-                // }
-                // "close" => {
-                //     Session::close();
-                // }
-                // "refresh" => {
-                //     Session::refresh();
-                // }
-                // "reconnect" => {
-                //     Session::reconnect();
-                // }
-                // "toggle_option" => {
-                //     Session::toggle_option(value);
-                // }
-                // "image_quality" => {
-                //     Session::set_image_quality(value);
-                // }
-                // "lock_screen" => {
-                //     Session::lock_screen();
-                // }
-                // "ctrl_alt_del" => {
-                //     Session::ctrl_alt_del();
-                // }
-                // "switch_display" => {
-                //     if let Ok(v) = value.parse::<i32>() {
-                //         Session::switch_display(v);
-                //     }
-                // }
                 "remove" => {
                     PeerConfig::remove(value);
                 }
-                // "input_key" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         let alt = m.get("alt").is_some();
-                //         let ctrl = m.get("ctrl").is_some();
-                //         let shift = m.get("shift").is_some();
-                //         let command = m.get("command").is_some();
-                //         let down = m.get("down").is_some();
-                //         let press = m.get("press").is_some();
-                //         if let Some(name) = m.get("name") {
-                //             Session::input_key(name, down, press, alt, ctrl, shift, command);
-                //         }
-                //     }
-                // }
-                // "input_string" => {
-                //     Session::input_string(value);
-                // }
-                // "chat_client_mode" => {
-                //     Session::send_chat(value.to_owned());
-                // }
 
                 // TODO
                 "send_mouse" => {
@@ -848,203 +805,29 @@ unsafe extern "C" fn set_by_name(name: *const c_char, value: *const c_char) {
                         }
                     }
                 }
-                "option" => {
-                    if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                        if let Some(name) = m.get("name") {
-                            if let Some(value) = m.get("value") {
-                                ui_interface::set_option(name.to_owned(), value.to_owned());
-                                if name == "custom-rendezvous-server" {
-                                    #[cfg(target_os = "android")]
-                                    crate::rendezvous_mediator::RendezvousMediator::restart();
-                                    #[cfg(any(
-                                        target_os = "android",
-                                        target_os = "ios",
-                                        feature = "cli"
-                                    ))]
-                                    crate::common::test_rendezvous_server();
-                                }
-                            }
-                        }
-                    }
-                }
-                // "peer_option" => {
+                // "option" => {
                 //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
                 //         if let Some(name) = m.get("name") {
                 //             if let Some(value) = m.get("value") {
-                //                 Session::set_option(name.to_owned(), value.to_owned());
+                //                 ui_interface::set_option(name.to_owned(), value.to_owned());
+                //                 if name == "custom-rendezvous-server" {
+                //                     #[cfg(target_os = "android")]
+                //                     crate::rendezvous_mediator::RendezvousMediator::restart();
+                //                     #[cfg(any(
+                //                         target_os = "android",
+                //                         target_os = "ios",
+                //                         feature = "cli"
+                //                     ))]
+                //                     crate::common::test_rendezvous_server();
+                //                 }
                 //             }
                 //         }
                 //     }
                 // }
-                "local_option" => {
-                    if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                        if let Some(name) = m.get("name") {
-                            if let Some(value) = m.get("value") {
-                                LocalConfig::set_option(name.to_owned(), value.to_owned());
-                            }
-                        }
-                    }
-                }
-                // "input_os_password" => {
-                //     Session::input_os_password(value.to_owned(), true);
-                // }
                 "restart_remote_device" => {
                     // TODO
                     // Session::restart_remote_device();
                 }
-                // // File Action
-                // "read_remote_dir" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let (Some(path), Some(show_hidden), Some(session)) = (
-                //             m.get("path"),
-                //             m.get("show_hidden"),
-                //             Session::get().read().unwrap().as_ref(),
-                //         ) {
-                //             session.read_remote_dir(path.to_owned(), show_hidden.eq("true"));
-                //         }
-                //     }
-                // }
-                // "send_files" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let (
-                //             Some(id),
-                //             Some(path),
-                //             Some(to),
-                //             Some(file_num),
-                //             Some(show_hidden),
-                //             Some(is_remote),
-                //         ) = (
-                //             m.get("id"),
-                //             m.get("path"),
-                //             m.get("to"),
-                //             m.get("file_num"),
-                //             m.get("show_hidden"),
-                //             m.get("is_remote"),
-                //         ) {
-                //             Session::send_files(
-                //                 id.parse().unwrap_or(0),
-                //                 path.to_owned(),
-                //                 to.to_owned(),
-                //                 file_num.parse().unwrap_or(0),
-                //                 show_hidden.eq("true"),
-                //                 is_remote.eq("true"),
-                //             );
-                //         }
-                //     }
-                // }
-                // "set_confirm_override_file" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let (
-                //             Some(id),
-                //             Some(file_num),
-                //             Some(need_override),
-                //             Some(remember),
-                //             Some(is_upload),
-                //         ) = (
-                //             m.get("id"),
-                //             m.get("file_num"),
-                //             m.get("need_override"),
-                //             m.get("remember"),
-                //             m.get("is_upload"),
-                //         ) {
-                //             Session::set_confirm_override_file(
-                //                 id.parse().unwrap_or(0),
-                //                 file_num.parse().unwrap_or(0),
-                //                 need_override.eq("true"),
-                //                 remember.eq("true"),
-                //                 is_upload.eq("true"),
-                //             );
-                //         }
-                //     }
-                // }
-                // ** TODO ** continue
-                // "remove_file" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let (
-                //             Some(id),
-                //             Some(path),
-                //             Some(file_num),
-                //             Some(is_remote),
-                //             Some(session),
-                //         ) = (
-                //             m.get("id"),
-                //             m.get("path"),
-                //             m.get("file_num"),
-                //             m.get("is_remote"),
-                //             Session::get().write().unwrap().as_mut(),
-                //         ) {
-                //             session.remove_file(
-                //                 id.parse().unwrap_or(0),
-                //                 path.to_owned(),
-                //                 file_num.parse().unwrap_or(0),
-                //                 is_remote.eq("true"),
-                //             );
-                //         }
-                //     }
-                // }
-                // "read_dir_recursive" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let (Some(id), Some(path), Some(is_remote), Some(session)) = (
-                //             m.get("id"),
-                //             m.get("path"),
-                //             m.get("is_remote"),
-                //             Session::get().write().unwrap().as_mut(),
-                //         ) {
-                //             session.remove_dir_all(
-                //                 id.parse().unwrap_or(0),
-                //                 path.to_owned(),
-                //                 is_remote.eq("true"),
-                //             );
-                //         }
-                //     }
-                // }
-                // "remove_all_empty_dirs" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let (Some(id), Some(path), Some(is_remote), Some(session)) = (
-                //             m.get("id"),
-                //             m.get("path"),
-                //             m.get("is_remote"),
-                //             Session::get().write().unwrap().as_mut(),
-                //         ) {
-                //             session.remove_dir(
-                //                 id.parse().unwrap_or(0),
-                //                 path.to_owned(),
-                //                 is_remote.eq("true"),
-                //             );
-                //         }
-                //     }
-                // }
-                // "cancel_job" => {
-                //     if let (Ok(id), Some(session)) =
-                //         (value.parse(), Session::get().write().unwrap().as_mut())
-                //     {
-                //         session.cancel_job(id);
-                //     }
-                // }
-                // "create_dir" => {
-                //     if let Ok(m) = serde_json::from_str::<HashMap<String, String>>(value) {
-                //         if let (Some(id), Some(path), Some(is_remote), Some(session)) = (
-                //             m.get("id"),
-                //             m.get("path"),
-                //             m.get("is_remote"),
-                //             Session::get().write().unwrap().as_mut(),
-                //         ) {
-                //             session.create_dir(
-                //                 id.parse().unwrap_or(0),
-                //                 path.to_owned(),
-                //                 is_remote.eq("true"),
-                //             );
-                //         }
-                //     }
-                // }
-                // Server Side
-                // "update_password" => {
-                //     if value.is_empty() {
-                //         Config::set_password(&Config::get_auto_password());
-                //     } else {
-                //         Config::set_password(value);
-                //     }
-                // }
                 #[cfg(target_os = "android")]
                 "chat_server_mode" => {
                     if let Ok(m) = serde_json::from_str::<HashMap<String, Value>>(value) {
@@ -1105,7 +888,11 @@ unsafe extern "C" fn set_by_name(name: *const c_char, value: *const c_char) {
 }
 
 fn handle_query_onlines(onlines: Vec<String>, offlines: Vec<String>) {
-    if let Some(s) = flutter::GLOBAL_EVENT_STREAM.read().unwrap().get(flutter::APP_TYPE_MAIN) {
+    if let Some(s) = flutter::GLOBAL_EVENT_STREAM
+        .read()
+        .unwrap()
+        .get(flutter::APP_TYPE_MAIN)
+    {
         let data = HashMap::from([
             ("name", "callback_query_onlines".to_owned()),
             ("onlines", onlines.join(",")),
diff --git a/src/ui_interface.rs b/src/ui_interface.rs
index 2aa4f36ec..cdfd0edce 100644
--- a/src/ui_interface.rs
+++ b/src/ui_interface.rs
@@ -138,10 +138,11 @@ pub fn get_license() -> String {
 }
 
 pub fn get_option(key: String) -> String {
-    #[cfg(any(target_os = "android", target_os = "ios"))]
-    return Config::get_option(&key);
-    #[cfg(not(any(target_os = "android", target_os = "ios")))]
-    return get_option_(&key);
+    get_option_(&key)
+    // #[cfg(any(target_os = "android", target_os = "ios"))]
+    // return Config::get_option(&key);
+    // #[cfg(not(any(target_os = "android", target_os = "ios")))]
+    // return get_option_(&key);
 }
 
 fn get_option_(key: &str) -> String {
@@ -250,33 +251,31 @@ pub fn get_sound_inputs() -> Vec<String> {
 }
 
 pub fn set_options(m: HashMap<String, String>) {
+    *OPTIONS.lock().unwrap() = m.clone();
     #[cfg(not(any(target_os = "android", target_os = "ios")))]
-    {
-        *OPTIONS.lock().unwrap() = m.clone();
-        ipc::set_options(m).ok();
-    }
+    ipc::set_options(m).ok();
+    #[cfg(any(target_os = "android", target_os = "ios"))]
+    Config::set_options(m);
 }
 
 pub fn set_option(key: String, value: String) {
+    let mut options = OPTIONS.lock().unwrap();
+    #[cfg(target_os = "macos")]
+    if &key == "stop-service" {
+        let is_stop = value == "Y";
+        if is_stop && crate::platform::macos::uninstall() {
+            return;
+        }
+    }
+    if value.is_empty() {
+        options.remove(&key);
+    } else {
+        options.insert(key.clone(), value.clone());
+    }
+    #[cfg(not(any(target_os = "android", target_os = "ios")))]
+    ipc::set_options(options.clone()).ok();
     #[cfg(any(target_os = "android", target_os = "ios"))]
     Config::set_option(key, value);
-    #[cfg(not(any(target_os = "android", target_os = "ios")))]
-    {
-        let mut options = OPTIONS.lock().unwrap();
-        #[cfg(target_os = "macos")]
-        if &key == "stop-service" {
-            let is_stop = value == "Y";
-            if is_stop && crate::platform::macos::uninstall() {
-                return;
-            }
-        }
-        if value.is_empty() {
-            options.remove(&key);
-        } else {
-            options.insert(key.clone(), value.clone());
-        }
-        ipc::set_options(options.clone()).ok();
-    }
 }
 
 pub fn install_path() -> String {