use uuid as session id

Signed-off-by: 21pages <pages21@163.com>
2025-10-29 17:00:05 +00:00 · 2023-06-06 07:39:44 +08:00
parent 71838ad821
commit 2ececed0c1
36 changed files with 706 additions and 546 deletions
--- a/flutter/lib/common.dart
+++ b/flutter/lib/common.dart
@@ -23,6 +23,7 @@ import 'package:texture_rgba_renderer/texture_rgba_renderer.dart';
 import 'package:uni_links/uni_links.dart';
 import 'package:uni_links_desktop/uni_links_desktop.dart';
 import 'package:url_launcher/url_launcher.dart';
+import 'package:uuid/uuid.dart';
 import 'package:win32/win32.dart' as win32;
 import 'package:window_manager/window_manager.dart';
 import 'package:window_size/window_size.dart' as window_size;
@@ -68,6 +69,7 @@ typedef F = String Function(String);
 typedef FMethod = String Function(String, dynamic);

 typedef StreamEventHandler = Future<void> Function(Map<String, dynamic>);
+typedef SessionID = UuidValue;
 final iconHardDrive = MemoryImage(Uint8List.fromList(base64Decode(
    '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')));

@@ -890,8 +892,8 @@ class CustomAlertDialog extends StatelessWidget {
  }
 }

-void msgBox(String id, String type, String title, String text, String link,
-    OverlayDialogManager dialogManager,
+void msgBox(SessionID sessionId, String type, String title, String text,
+    String link, OverlayDialogManager dialogManager,
    {bool? hasCancel, ReconnectHandle? reconnect}) {
  dialogManager.dismissAll();
  List<Widget> buttons = [];
@@ -936,7 +938,7 @@ void msgBox(String id, String type, String title, String text, String link,
    buttons.insert(
        0,
        dialogButton('Reconnect', isOutline: true, onPressed: () {
-          reconnect(dialogManager, id, false);
+          reconnect(dialogManager, sessionId, false);
        }));
  }
  if (link.isNotEmpty) {
@@ -950,7 +952,7 @@ void msgBox(String id, String type, String title, String text, String link,
      onSubmit: hasOk ? submit : null,
      onCancel: hasCancel == true ? cancel : null,
    ),
-    tag: '$id-$type-$title-$text-$link',
+    tag: '$sessionId-$type-$title-$text-$link',
  );
 }

--- a/flutter/lib/common/widgets/dialog.dart
+++ b/flutter/lib/common/widgets/dialog.dart
@@ -10,9 +10,9 @@ import '../../common.dart';
 import '../../models/model.dart';
 import '../../models/platform_model.dart';

-void clientClose(String id, OverlayDialogManager dialogManager) {
-  msgBox(id, 'info', 'Close', 'Are you sure to close the connection?', '',
-      dialogManager);
+void clientClose(SessionID sessionId, OverlayDialogManager dialogManager) {
+  msgBox(sessionId, 'info', 'Close', 'Are you sure to close the connection?',
+      '', dialogManager);
 }

 abstract class ValidationRule {
@@ -423,8 +423,8 @@ class _PasswordWidgetState extends State<PasswordWidget> {
  }
 }

-void wrongPasswordDialog(
-    String id, OverlayDialogManager dialogManager, type, title, text) {
+void wrongPasswordDialog(SessionID sessionId,
+    OverlayDialogManager dialogManager, type, title, text) {
  dialogManager.dismissAll();
  dialogManager.show((setState, close, context) {
    cancel() {
@@ -433,7 +433,7 @@ void wrongPasswordDialog(
    }

    submit() {
-      enterPasswordDialog(id, dialogManager);
+      enterPasswordDialog(sessionId, dialogManager);
    }

    return CustomAlertDialog(
@@ -455,17 +455,19 @@ void wrongPasswordDialog(
  });
 }

-void enterPasswordDialog(String id, OverlayDialogManager dialogManager) async {
+void enterPasswordDialog(
+    SessionID sessionId, OverlayDialogManager dialogManager) async {
  await _connectDialog(
-    id,
+    sessionId,
    dialogManager,
    passwordController: TextEditingController(),
  );
 }

-void enterUserLoginDialog(String id, OverlayDialogManager dialogManager) async {
+void enterUserLoginDialog(
+    SessionID sessionId, OverlayDialogManager dialogManager) async {
  await _connectDialog(
-    id,
+    sessionId,
    dialogManager,
    osUsernameController: TextEditingController(),
    osPasswordController: TextEditingController(),
@@ -473,9 +475,9 @@ void enterUserLoginDialog(String id, OverlayDialogManager dialogManager) async {
 }

 void enterUserLoginAndPasswordDialog(
-    String id, OverlayDialogManager dialogManager) async {
+    SessionID sessionId, OverlayDialogManager dialogManager) async {
  await _connectDialog(
-    id,
+    sessionId,
    dialogManager,
    osUsernameController: TextEditingController(),
    osPasswordController: TextEditingController(),
@@ -484,7 +486,7 @@ void enterUserLoginAndPasswordDialog(
 }

 _connectDialog(
-  String id,
+  SessionID sessionId,
  OverlayDialogManager dialogManager, {
  TextEditingController? osUsernameController,
  TextEditingController? osPasswordController,
@@ -492,11 +494,13 @@ _connectDialog(
 }) async {
  var rememberPassword = false;
  if (passwordController != null) {
-    rememberPassword = await bind.sessionGetRemember(id: id) ?? false;
+    rememberPassword =
+        await bind.sessionGetRemember(sessionId: sessionId) ?? false;
  }
  var rememberAccount = false;
  if (osUsernameController != null) {
-    rememberAccount = await bind.sessionGetRemember(id: id) ?? false;
+    rememberAccount =
+        await bind.sessionGetRemember(sessionId: sessionId) ?? false;
  }
  dialogManager.dismissAll();
  dialogManager.show((setState, close, context) {
@@ -511,13 +515,15 @@ _connectDialog(
      final password = passwordController?.text.trim() ?? '';
      if (passwordController != null && password.isEmpty) return;
      if (rememberAccount) {
-        bind.sessionPeerOption(id: id, name: 'os-username', value: osUsername);
-        bind.sessionPeerOption(id: id, name: 'os-password', value: osPassword);
+        bind.sessionPeerOption(
+            sessionId: sessionId, name: 'os-username', value: osUsername);
+        bind.sessionPeerOption(
+            sessionId: sessionId, name: 'os-password', value: osPassword);
      }
      gFFI.login(
        osUsername,
        osPassword,
-        id,
+        sessionId,
        password,
        rememberPassword,
      );
@@ -650,10 +656,10 @@ _connectDialog(
 }

 void showWaitUacDialog(
-    String id, OverlayDialogManager dialogManager, String type) {
+    SessionID sessionId, OverlayDialogManager dialogManager, String type) {
  dialogManager.dismissAll();
  dialogManager.show(
-      tag: '$id-wait-uac',
+      tag: '$sessionId-wait-uac',
      (setState, close, context) => CustomAlertDialog(
            title: null,
            content: msgboxContent(type, 'Wait', 'wait_accept_uac_tip'),
@@ -661,7 +667,8 @@ void showWaitUacDialog(
 }

 // Another username && password dialog?
-void showRequestElevationDialog(String id, OverlayDialogManager dialogManager) {
+void showRequestElevationDialog(
+    SessionID sessionId, OverlayDialogManager dialogManager) {
  RxString groupValue = ''.obs;
  RxString errUser = ''.obs;
  RxString errPwd = ''.obs;
@@ -785,7 +792,8 @@ void showRequestElevationDialog(String id, OverlayDialogManager dialogManager) {
  );

  dialogManager.dismissAll();
-  dialogManager.show(tag: '$id-request-elevation', (setState, close, context) {
+  dialogManager.show(tag: '$sessionId-request-elevation',
+      (setState, close, context) {
    void submit() {
      if (groupValue.value == 'logon') {
        if (userController.text.isEmpty) {
@@ -797,11 +805,11 @@ void showRequestElevationDialog(String id, OverlayDialogManager dialogManager) {
          return;
        }
        bind.sessionElevateWithLogon(
-            id: id,
+            sessionId: sessionId,
            username: userController.text,
            password: pwdController.text);
      } else {
-        bind.sessionElevateDirect(id: id);
+        bind.sessionElevateDirect(sessionId: sessionId);
      }
    }

@@ -828,20 +836,20 @@ void showRequestElevationDialog(String id, OverlayDialogManager dialogManager) {
 }

 void showOnBlockDialog(
-  String id,
+  SessionID sessionId,
  String type,
  String title,
  String text,
  OverlayDialogManager dialogManager,
 ) {
-  if (dialogManager.existing('$id-wait-uac') ||
-      dialogManager.existing('$id-request-elevation')) {
+  if (dialogManager.existing('$sessionId-wait-uac') ||
+      dialogManager.existing('$sessionId-request-elevation')) {
    return;
  }
-  dialogManager.show(tag: '$id-$type', (setState, close, context) {
+  dialogManager.show(tag: '$sessionId-$type', (setState, close, context) {
    void submit() {
      close();
-      showRequestElevationDialog(id, dialogManager);
+      showRequestElevationDialog(sessionId, dialogManager);
    }

    return CustomAlertDialog(
@@ -858,12 +866,12 @@ void showOnBlockDialog(
  });
 }

-void showElevationError(String id, String type, String title, String text,
-    OverlayDialogManager dialogManager) {
-  dialogManager.show(tag: '$id-$type', (setState, close, context) {
+void showElevationError(SessionID sessionId, String type, String title,
+    String text, OverlayDialogManager dialogManager) {
+  dialogManager.show(tag: '$sessionId-$type', (setState, close, context) {
    void submit() {
      close();
-      showRequestElevationDialog(id, dialogManager);
+      showRequestElevationDialog(sessionId, dialogManager);
    }

    return CustomAlertDialog(
@@ -881,8 +889,8 @@ void showElevationError(String id, String type, String title, String text,
  });
 }

-void showWaitAcceptDialog(String id, String type, String title, String text,
-    OverlayDialogManager dialogManager) {
+void showWaitAcceptDialog(SessionID sessionId, String type, String title,
+    String text, OverlayDialogManager dialogManager) {
  dialogManager.dismissAll();
  dialogManager.show((setState, close, context) {
    onCancel() {
@@ -900,8 +908,8 @@ void showWaitAcceptDialog(String id, String type, String title, String text,
  });
 }

-void showRestartRemoteDevice(
-    PeerInfo pi, String id, OverlayDialogManager dialogManager) async {
+void showRestartRemoteDevice(PeerInfo pi, String id, SessionID sessionId,
+    OverlayDialogManager dialogManager) async {
  final res = await dialogManager
      .show<bool>((setState, close, context) => CustomAlertDialog(
            title: Row(children: [
@@ -928,26 +936,33 @@ void showRestartRemoteDevice(
            onCancel: close,
            onSubmit: () => close(true),
          ));
-  if (res == true) bind.sessionRestartRemoteDevice(id: id);
+  if (res == true) bind.sessionRestartRemoteDevice(sessionId: sessionId);
 }

 showSetOSPassword(
-  String id,
+  SessionID sessionId,
  bool login,
  OverlayDialogManager dialogManager,
 ) async {
  final controller = TextEditingController();
-  var password = await bind.sessionGetOption(id: id, arg: 'os-password') ?? '';
-  var autoLogin = await bind.sessionGetOption(id: id, arg: 'auto-login') != '';
+  var password =
+      await bind.sessionGetOption(sessionId: sessionId, arg: 'os-password') ??
+          '';
+  var autoLogin =
+      await bind.sessionGetOption(sessionId: sessionId, arg: 'auto-login') !=
+          '';
  controller.text = password;
  dialogManager.show((setState, close, context) {
    submit() {
      var text = controller.text.trim();
-      bind.sessionPeerOption(id: id, name: 'os-password', value: text);
      bind.sessionPeerOption(
-          id: id, name: 'auto-login', value: autoLogin ? 'Y' : '');
+          sessionId: sessionId, name: 'os-password', value: text);
+      bind.sessionPeerOption(
+          sessionId: sessionId,
+          name: 'auto-login',
+          value: autoLogin ? 'Y' : '');
      if (text != '' && login) {
-        bind.sessionInputOsPassword(id: id, value: text);
+        bind.sessionInputOsPassword(sessionId: sessionId, value: text);
      }
      close();
    }
@@ -999,21 +1014,27 @@ showSetOSPassword(
 }

 showSetOSAccount(
-  String id,
+  SessionID sessionId,
  OverlayDialogManager dialogManager,
 ) async {
  final usernameController = TextEditingController();
  final passwdController = TextEditingController();
-  var username = await bind.sessionGetOption(id: id, arg: 'os-username') ?? '';
-  var password = await bind.sessionGetOption(id: id, arg: 'os-password') ?? '';
+  var username =
+      await bind.sessionGetOption(sessionId: sessionId, arg: 'os-username') ??
+          '';
+  var password =
+      await bind.sessionGetOption(sessionId: sessionId, arg: 'os-password') ??
+          '';
  usernameController.text = username;
  passwdController.text = password;
  dialogManager.show((setState, close, context) {
    submit() {
      final username = usernameController.text.trim();
      final password = usernameController.text.trim();
-      bind.sessionPeerOption(id: id, name: 'os-username', value: username);
-      bind.sessionPeerOption(id: id, name: 'os-password', value: password);
+      bind.sessionPeerOption(
+          sessionId: sessionId, name: 'os-username', value: username);
+      bind.sessionPeerOption(
+          sessionId: sessionId, name: 'os-password', value: password);
      close();
    }

@@ -1077,13 +1098,13 @@ showSetOSAccount(
  });
 }

-showAuditDialog(String id, dialogManager) async {
+showAuditDialog(SessionID sessionId, dialogManager) async {
  final controller = TextEditingController();
  dialogManager.show((setState, close) {
    submit() {
      var text = controller.text.trim();
      if (text != '') {
-        bind.sessionSendNote(id: id, note: text);
+        bind.sessionSendNote(sessionId: sessionId, note: text);
      }
      close();
    }
@@ -1139,10 +1160,10 @@ showAuditDialog(String id, dialogManager) async {
 }

 void showConfirmSwitchSidesDialog(
-    String id, OverlayDialogManager dialogManager) async {
+    SessionID sessionId, String id, OverlayDialogManager dialogManager) async {
  dialogManager.show((setState, close, context) {
    submit() async {
-      await bind.sessionSwitchSides(id: id);
+      await bind.sessionSwitchSides(sessionId: sessionId);
      closeConnection(id: id);
    }

@@ -1159,7 +1180,7 @@ void showConfirmSwitchSidesDialog(
  });
 }

-customImageQualityDialog(String id, FFI ffi) async {
+customImageQualityDialog(SessionID sessionId, String id, FFI ffi) async {
  double qualityInitValue = 50;
  double fpsInitValue = 30;
  bool qualitySet = false;
@@ -1167,20 +1188,22 @@ customImageQualityDialog(String id, FFI ffi) async {
  setCustomValues({double? quality, double? fps}) async {
    if (quality != null) {
      qualitySet = true;
-      await bind.sessionSetCustomImageQuality(id: id, value: quality.toInt());
+      await bind.sessionSetCustomImageQuality(
+          sessionId: sessionId, value: quality.toInt());
    }
    if (fps != null) {
      fpsSet = true;
-      await bind.sessionSetCustomFps(id: id, fps: fps.toInt());
+      await bind.sessionSetCustomFps(sessionId: sessionId, fps: fps.toInt());
    }
    if (!qualitySet) {
      qualitySet = true;
      await bind.sessionSetCustomImageQuality(
-          id: id, value: qualityInitValue.toInt());
+          sessionId: sessionId, value: qualityInitValue.toInt());
    }
    if (!fpsSet) {
      fpsSet = true;
-      await bind.sessionSetCustomFps(id: id, fps: fpsInitValue.toInt());
+      await bind.sessionSetCustomFps(
+          sessionId: sessionId, fps: fpsInitValue.toInt());
    }
  }

@@ -1190,7 +1213,7 @@ customImageQualityDialog(String id, FFI ffi) async {
  });

  // quality
-  final quality = await bind.sessionGetCustomImageQuality(id: id);
+  final quality = await bind.sessionGetCustomImageQuality(sessionId: sessionId);
  qualityInitValue =
      quality != null && quality.isNotEmpty ? quality[0].toDouble() : 50.0;
  const qualityMinValue = 10.0;
@@ -1238,7 +1261,8 @@ customImageQualityDialog(String id, FFI ffi) async {
        ],
      ));
  // fps
-  final fpsOption = await bind.sessionGetOption(id: id, arg: 'custom-fps');
+  final fpsOption =
+      await bind.sessionGetOption(sessionId: sessionId, arg: 'custom-fps');
  fpsInitValue = fpsOption == null ? 30 : double.tryParse(fpsOption) ?? 30;
  if (fpsInitValue < 5 || fpsInitValue > 120) {
    fpsInitValue = 30;
--- a/flutter/lib/common/widgets/peer_card.dart
+++ b/flutter/lib/common/widgets/peer_card.dart
@@ -735,7 +735,6 @@ abstract class BasePeerCard extends StatelessWidget {
            }
            await bind.mainRemovePeer(id: id);
          }
-          removePreference(id);
          await reloadFunc();
          close();
        }
--- a/flutter/lib/common/widgets/toolbar.dart
+++ b/flutter/lib/common/widgets/toolbar.dart
@@ -48,6 +48,7 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
  final ffiModel = ffi.ffiModel;
  final pi = ffiModel.pi;
  final perms = ffiModel.permissions;
+  final sessionId = ffi.sessionId;

  List<TTextMenu> v = [];
  // elevation
@@ -55,7 +56,8 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
    v.add(
      TTextMenu(
          child: Text(translate('Request Elevation')),
-          onPressed: () => showRequestElevationDialog(id, ffi.dialogManager)),
+          onPressed: () =>
+              showRequestElevationDialog(sessionId, ffi.dialogManager)),
    );
  }
  // osAccount / osPassword
@@ -70,8 +72,8 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
        ]),
        trailingIcon: Transform.scale(scale: 0.8, child: Icon(Icons.edit)),
        onPressed: () => pi.is_headless
-            ? showSetOSAccount(id, ffi.dialogManager)
-            : showSetOSPassword(id, false, ffi.dialogManager)),
+            ? showSetOSAccount(sessionId, ffi.dialogManager)
+            : showSetOSPassword(sessionId, false, ffi.dialogManager)),
  );
  // paste
  if (isMobile && perms['keyboard'] != false && perms['clipboard'] != false) {
@@ -80,7 +82,8 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
        onPressed: () async {
          ClipboardData? data = await Clipboard.getData(Clipboard.kTextPlain);
          if (data != null && data.text != null) {
-            bind.sessionInputString(id: id, value: data.text ?? "");
+            bind.sessionInputString(
+                sessionId: sessionId, value: data.text ?? "");
          }
        }));
  }
@@ -107,11 +110,13 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
    );
  }
  // note
-  if (bind.sessionGetAuditServerSync(id: id, typ: "conn").isNotEmpty) {
+  if (bind
+      .sessionGetAuditServerSync(sessionId: sessionId, typ: "conn")
+      .isNotEmpty) {
    v.add(
      TTextMenu(
          child: Text(translate('Note')),
-          onPressed: () => showAuditDialog(id, ffi.dialogManager)),
+          onPressed: () => showAuditDialog(sessionId, ffi.dialogManager)),
    );
  }
  // divider
@@ -125,7 +130,7 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
    v.add(
      TTextMenu(
          child: Text('${translate("Insert")} Ctrl + Alt + Del'),
-          onPressed: () => bind.sessionCtrlAltDel(id: id)),
+          onPressed: () => bind.sessionCtrlAltDel(sessionId: sessionId)),
    );
  }
  // restart
@@ -136,7 +141,8 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
    v.add(
      TTextMenu(
          child: Text(translate('Restart Remote Device')),
-          onPressed: () => showRestartRemoteDevice(pi, id, ffi.dialogManager)),
+          onPressed: () =>
+              showRestartRemoteDevice(pi, id, sessionId, ffi.dialogManager)),
    );
  }
  // insertLock
@@ -144,7 +150,7 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
    v.add(
      TTextMenu(
          child: Text(translate('Insert Lock')),
-          onPressed: () => bind.sessionLockScreen(id: id)),
+          onPressed: () => bind.sessionLockScreen(sessionId: sessionId)),
    );
  }
  // blockUserInput
@@ -157,7 +163,8 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
        onPressed: () {
          RxBool blockInput = BlockInputState.find(id);
          bind.sessionToggleOption(
-              id: id, value: '${blockInput.value ? 'un' : ''}block-input');
+              sessionId: sessionId,
+              value: '${blockInput.value ? 'un' : ''}block-input');
          blockInput.value = !blockInput.value;
        }));
  }
@@ -169,13 +176,14 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {
      version_cmp(pi.version, '1.2.0') >= 0) {
    v.add(TTextMenu(
        child: Text(translate('Switch Sides')),
-        onPressed: () => showConfirmSwitchSidesDialog(id, ffi.dialogManager)));
+        onPressed: () =>
+            showConfirmSwitchSidesDialog(sessionId, id, ffi.dialogManager)));
  }
  // refresh
  if (pi.version.isNotEmpty) {
    v.add(TTextMenu(
        child: Text(translate('Refresh')),
-        onPressed: () => bind.sessionRefresh(id: id)));
+        onPressed: () => bind.sessionRefresh(sessionId: sessionId)));
  }
  // record
  var codecFormat = ffi.qualityMonitorModel.data.codecFormat;
@@ -213,11 +221,12 @@ List<TTextMenu> toolbarControls(BuildContext context, String id, FFI ffi) {

 Future<List<TRadioMenu<String>>> toolbarViewStyle(
    BuildContext context, String id, FFI ffi) async {
-  final groupValue = await bind.sessionGetViewStyle(id: id) ?? '';
+  final groupValue =
+      await bind.sessionGetViewStyle(sessionId: ffi.sessionId) ?? '';
  void onChanged(String? value) async {
    if (value == null) return;
    bind
-        .sessionSetViewStyle(id: id, value: value)
+        .sessionSetViewStyle(sessionId: ffi.sessionId, value: value)
        .then((_) => ffi.canvasModel.updateViewStyle());
  }

@@ -237,10 +246,11 @@ Future<List<TRadioMenu<String>>> toolbarViewStyle(

 Future<List<TRadioMenu<String>>> toolbarImageQuality(
    BuildContext context, String id, FFI ffi) async {
-  final groupValue = await bind.sessionGetImageQuality(id: id) ?? '';
+  final groupValue =
+      await bind.sessionGetImageQuality(sessionId: ffi.sessionId) ?? '';
  onChanged(String? value) async {
    if (value == null) return;
-    await bind.sessionSetImageQuality(id: id, value: value);
+    await bind.sessionSetImageQuality(sessionId: ffi.sessionId, value: value);
  }

  return [
@@ -265,7 +275,7 @@ Future<List<TRadioMenu<String>>> toolbarImageQuality(
      groupValue: groupValue,
      onChanged: (value) {
        onChanged(value);
-        customImageQualityDialog(id, ffi);
+        customImageQualityDialog(ffi.sessionId, id, ffi);
      },
    ),
  ];
@@ -273,9 +283,12 @@ Future<List<TRadioMenu<String>>> toolbarImageQuality(

 Future<List<TRadioMenu<String>>> toolbarCodec(
    BuildContext context, String id, FFI ffi) async {
-  final alternativeCodecs = await bind.sessionAlternativeCodecs(id: id);
-  final groupValue =
-      await bind.sessionGetOption(id: id, arg: 'codec-preference') ?? '';
+  final sessionId = ffi.sessionId;
+  final alternativeCodecs =
+      await bind.sessionAlternativeCodecs(sessionId: sessionId);
+  final groupValue = await bind.sessionGetOption(
+          sessionId: sessionId, arg: 'codec-preference') ??
+      '';
  final List<bool> codecs = [];
  try {
    final Map codecsJson = jsonDecode(alternativeCodecs);
@@ -296,8 +309,8 @@ Future<List<TRadioMenu<String>>> toolbarCodec(
  onChanged(String? value) async {
    if (value == null) return;
    await bind.sessionPeerOption(
-        id: id, name: 'codec-preference', value: value);
-    bind.sessionChangePreferCodec(id: id);
+        sessionId: sessionId, name: 'codec-preference', value: value);
+    bind.sessionChangePreferCodec(sessionId: sessionId);
  }

  TRadioMenu<String> radio(String label, String value, bool enabled) {
@@ -324,6 +337,7 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
  final ffiModel = ffi.ffiModel;
  final pi = ffiModel.pi;
  final perms = ffiModel.permissions;
+  final sessionId = ffi.sessionId;

  // show remote cursor
  if (pi.platform != kPeerPlatformAndroid &&
@@ -338,14 +352,15 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
        onChanged: enabled
            ? (value) async {
                if (value == null) return;
-                await bind.sessionToggleOption(id: id, value: option);
-                state.value =
-                    bind.sessionGetToggleOptionSync(id: id, arg: option);
+                await bind.sessionToggleOption(
+                    sessionId: sessionId, value: option);
+                state.value = bind.sessionGetToggleOptionSync(
+                    sessionId: sessionId, arg: option);
              }
            : null));
  }
  // zoom cursor
-  final viewStyle = await bind.sessionGetViewStyle(id: id) ?? '';
+  final viewStyle = await bind.sessionGetViewStyle(sessionId: sessionId) ?? '';
  if (!isMobile &&
      pi.platform != kPeerPlatformAndroid &&
      viewStyle != kRemoteViewStyleOriginal) {
@@ -356,30 +371,32 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
      value: peerState.value,
      onChanged: (value) async {
        if (value == null) return;
-        await bind.sessionToggleOption(id: id, value: option);
-        peerState.value = bind.sessionGetToggleOptionSync(id: id, arg: option);
+        await bind.sessionToggleOption(sessionId: sessionId, value: option);
+        peerState.value =
+            bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: option);
      },
    ));
  }
  // show quality monitor
  final option = 'show-quality-monitor';
  v.add(TToggleMenu(
-      value: bind.sessionGetToggleOptionSync(id: id, arg: option),
+      value: bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: option),
      onChanged: (value) async {
        if (value == null) return;
-        await bind.sessionToggleOption(id: id, value: option);
-        ffi.qualityMonitorModel.checkShowQualityMonitor(id);
+        await bind.sessionToggleOption(sessionId: sessionId, value: option);
+        ffi.qualityMonitorModel.checkShowQualityMonitor(sessionId);
      },
      child: Text(translate('Show quality monitor'))));
  // mute
  if (perms['audio'] != false) {
    final option = 'disable-audio';
-    final value = bind.sessionGetToggleOptionSync(id: id, arg: option);
+    final value =
+        bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: option);
    v.add(TToggleMenu(
        value: value,
        onChanged: (value) {
          if (value == null) return;
-          bind.sessionToggleOption(id: id, value: option);
+          bind.sessionToggleOption(sessionId: sessionId, value: option);
        },
        child: Text(translate('Mute'))));
  }
@@ -388,12 +405,13 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
      pi.platform == kPeerPlatformWindows &&
      perms['file'] != false) {
    final option = 'enable-file-transfer';
-    final value = bind.sessionGetToggleOptionSync(id: id, arg: option);
+    final value =
+        bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: option);
    v.add(TToggleMenu(
        value: value,
        onChanged: (value) {
          if (value == null) return;
-          bind.sessionToggleOption(id: id, value: option);
+          bind.sessionToggleOption(sessionId: sessionId, value: option);
        },
        child: Text(translate('Allow file copy and paste'))));
  }
@@ -401,14 +419,15 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
  if (ffiModel.keyboard && perms['clipboard'] != false) {
    final enabled = !ffiModel.viewOnly;
    final option = 'disable-clipboard';
-    var value = bind.sessionGetToggleOptionSync(id: id, arg: option);
+    var value =
+        bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: option);
    if (ffiModel.viewOnly) value = true;
    v.add(TToggleMenu(
        value: value,
        onChanged: enabled
            ? (value) {
                if (value == null) return;
-                bind.sessionToggleOption(id: id, value: option);
+                bind.sessionToggleOption(sessionId: sessionId, value: option);
              }
            : null,
        child: Text(translate('Disable clipboard'))));
@@ -416,12 +435,13 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
  // lock after session end
  if (ffiModel.keyboard) {
    final option = 'lock-after-session-end';
-    final value = bind.sessionGetToggleOptionSync(id: id, arg: option);
+    final value =
+        bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: option);
    v.add(TToggleMenu(
        value: value,
        onChanged: (value) {
          if (value == null) return;
-          bind.sessionToggleOption(id: id, value: option);
+          bind.sessionToggleOption(sessionId: sessionId, value: option);
        },
        child: Text(translate('Lock after session end'))));
  }
@@ -434,11 +454,11 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
        onChanged: (value) {
          if (value == null) return;
          if (ffiModel.pi.currentDisplay != 0) {
-            msgBox(id, 'custom-nook-nocancel-hasclose', 'info',
+            msgBox(sessionId, 'custom-nook-nocancel-hasclose', 'info',
                'Please switch to Display 1 first', '', ffi.dialogManager);
            return;
          }
-          bind.sessionToggleOption(id: id, value: option);
+          bind.sessionToggleOption(sessionId: sessionId, value: option);
        },
        child: Text(translate('Privacy mode'))));
  }
@@ -447,12 +467,13 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
      ((Platform.isMacOS && pi.platform != kPeerPlatformMacOS) ||
          (!Platform.isMacOS && pi.platform == kPeerPlatformMacOS))) {
    final option = 'allow_swap_key';
-    final value = bind.sessionGetToggleOptionSync(id: id, arg: option);
+    final value =
+        bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: option);
    v.add(TToggleMenu(
        value: value,
        onChanged: (value) {
          if (value == null) return;
-          bind.sessionToggleOption(id: id, value: option);
+          bind.sessionToggleOption(sessionId: sessionId, value: option);
        },
        child: Text(translate('Swap control-command key'))));
  }
--- a/flutter/lib/desktop/pages/file_manager_page.dart
+++ b/flutter/lib/desktop/pages/file_manager_page.dart
@@ -449,7 +449,8 @@ class _FileManagerViewState extends State<FileManagerView> {
                          padding: EdgeInsets.all(8.0),
                          child: FutureBuilder<String>(
                              future: bind.sessionGetPlatform(
-                                  id: _ffi.id, isRemote: !isLocal),
+                                  sessionId: _ffi.sessionId,
+                                  isRemote: !isLocal),
                              builder: (context, snapshot) {
                                if (snapshot.hasData &&
                                    snapshot.data!.isNotEmpty) {
--- a/flutter/lib/desktop/pages/port_forward_page.dart
+++ b/flutter/lib/desktop/pages/port_forward_page.dart
@@ -194,7 +194,7 @@ class _PortForwardPageState extends State<PortForwardPage>
                (remoteHostController.text.isEmpty ||
                    remoteHostController.text.trim().isNotEmpty)) {
              await bind.sessionAddPortForward(
-                  id: 'pf_${widget.id}',
+                  sessionId: _ffi.sessionId,
                  localPort: localPort,
                  remoteHost: remoteHostController.text.trim().isEmpty
                      ? 'localhost'
@@ -254,7 +254,7 @@ class _PortForwardPageState extends State<PortForwardPage>
            icon: const Icon(Icons.close),
            onPressed: () async {
              await bind.sessionRemovePortForward(
-                  id: 'pf_${widget.id}', localPort: pf.localPort);
+                  sessionId: _ffi.sessionId, localPort: pf.localPort);
              refreshTunnelConfig();
            },
          ),
@@ -313,7 +313,7 @@ class _PortForwardPageState extends State<PortForwardPage>
                        width: 120,
                        child: ElevatedButton(
                          onPressed: () =>
-                              bind.sessionNewRdp(id: "pf_${widget.id}"),
+                              bind.sessionNewRdp(sessionId: _ffi.sessionId),
                          child: Text(
                            translate('New RDP'),
                          ),
--- a/flutter/lib/desktop/pages/port_forward_tab_page.dart
+++ b/flutter/lib/desktop/pages/port_forward_tab_page.dart
@@ -110,12 +110,12 @@ class _PortForwardTabPageState extends State<PortForwardTabPage> {
    return Platform.isMacOS || kUseCompatibleUiMode
        ? tabWidget
        : Obx(
-          () => SubWindowDragToResizeArea(
+            () => SubWindowDragToResizeArea(
              child: tabWidget,
              resizeEdgeSize: stateGlobal.resizeEdgeSize.value,
              windowId: stateGlobal.windowId,
            ),
-        );
+          );
  }

  void onRemoveId(String id) {
--- a/flutter/lib/desktop/pages/remote_page.dart
+++ b/flutter/lib/desktop/pages/remote_page.dart
@@ -76,6 +76,8 @@ class _RemotePageState extends State<RemotePage>

  late FFI _ffi;

+  SessionID get sessionId => _ffi.sessionId;
+
  void _initStates(String id) {
    initSharedStates(id);
    _zoomCursor = PeerBoolOption.find(id, 'zoom-cursor');
@@ -117,19 +119,19 @@ class _RemotePageState extends State<RemotePage>
        debugPrint("id: $id, texture_key: $_textureKey");
        if (id != -1) {
          final ptr = await textureRenderer.getTexturePtr(_textureKey);
-          platformFFI.registerTexture(widget.id, ptr);
+          platformFFI.registerTexture(sessionId, ptr);
          _textureId.value = id;
        }
      });
    }
-    _ffi.ffiModel.updateEventListener(widget.id);
+    _ffi.ffiModel.updateEventListener(sessionId, widget.id);
    bind.pluginSyncUi(syncTo: kAppTypeDesktopRemote);
-    _ffi.qualityMonitorModel.checkShowQualityMonitor(widget.id);
+    _ffi.qualityMonitorModel.checkShowQualityMonitor(sessionId);
    // Session option should be set after models.dart/FFI.start
    _showRemoteCursor.value = bind.sessionGetToggleOptionSync(
-        id: widget.id, arg: 'show-remote-cursor');
-    _zoomCursor.value =
-        bind.sessionGetToggleOptionSync(id: widget.id, arg: 'zoom-cursor');
+        sessionId: sessionId, arg: 'show-remote-cursor');
+    _zoomCursor.value = bind.sessionGetToggleOptionSync(
+        sessionId: sessionId, arg: 'zoom-cursor');
    DesktopMultiWindow.addListener(this);
    // if (!_isCustomCursorInited) {
    //   customCursorController.registerNeedUpdateCursorCallback(
@@ -203,11 +205,11 @@ class _RemotePageState extends State<RemotePage>
  void dispose() {
    debugPrint("REMOTE PAGE dispose ${widget.id}");
    if (useTextureRender) {
-      platformFFI.registerTexture(widget.id, 0);
+      platformFFI.registerTexture(sessionId, 0);
      textureRenderer.closeTexture(_textureKey);
    }
    // ensure we leave this session, this is a double check
-    bind.sessionEnterOrLeave(id: widget.id, enter: false);
+    bind.sessionEnterOrLeave(sessionId: sessionId, enter: false);
    DesktopMultiWindow.removeListener(this);
    _ffi.dialogManager.hideMobileActionsOverlay();
    _ffi.recordingModel.onClose();
@@ -278,7 +280,7 @@ class _RemotePageState extends State<RemotePage>
    super.build(context);
    return WillPopScope(
        onWillPop: () async {
-          clientClose(widget.id, _ffi.dialogManager);
+          clientClose(sessionId, _ffi.dialogManager);
          return false;
        },
        child: MultiProvider(providers: [
@@ -305,7 +307,7 @@ class _RemotePageState extends State<RemotePage>
      if (!_rawKeyFocusNode.hasFocus) {
        _rawKeyFocusNode.requestFocus();
      }
-      bind.sessionEnterOrLeave(id: widget.id, enter: true);
+      bind.sessionEnterOrLeave(sessionId: sessionId, enter: true);
    }
  }

@@ -325,7 +327,7 @@ class _RemotePageState extends State<RemotePage>
    }
    // See [onWindowBlur].
    if (!Platform.isWindows) {
-      bind.sessionEnterOrLeave(id: widget.id, enter: false);
+      bind.sessionEnterOrLeave(sessionId: sessionId, enter: false);
    }
  }

--- a/flutter/lib/desktop/pages/remote_tab_page.dart
+++ b/flutter/lib/desktop/pages/remote_tab_page.dart
@@ -56,7 +56,11 @@ class _ConnectionTabPageState extends State<ConnectionTabPage> {
    if (peerId != null) {
      ConnectionTypeState.init(peerId);
      tabController.onSelected = (_, id) {
-        bind.setCurSessionId(id: id);
+        final remotePage = tabController.state.value.tabs
+            .firstWhere((tab) => tab.key == id)
+            .page as RemotePage;
+        final ffi = remotePage.ffi;
+        bind.setCurSessionId(sessionId: ffi.sessionId);
        WindowController.fromWindowId(windowId())
            .setTitle(getWindowNameWithId(id));
      };
@@ -243,6 +247,7 @@ class _ConnectionTabPageState extends State<ConnectionTabPage> {
    final ffi = remotePage.ffi;
    final pi = ffi.ffiModel.pi;
    final perms = ffi.ffiModel.permissions;
+    final sessionId = ffi.sessionId;
    menu.addAll([
      MenuEntryButton<String>(
        childBuilder: (TextStyle? style) => Text(
@@ -282,6 +287,7 @@ class _ConnectionTabPageState extends State<ConnectionTabPage> {
      menu.add(MenuEntryDivider<String>());
      menu.add(RemoteMenuEntry.showRemoteCursor(
        key,
+        sessionId,
        padding,
        dismissFunc: cancelFunc,
      ));
@@ -289,15 +295,15 @@ class _ConnectionTabPageState extends State<ConnectionTabPage> {

    if (perms['keyboard'] != false && !ffi.ffiModel.viewOnly) {
      if (perms['clipboard'] != false) {
-        menu.add(RemoteMenuEntry.disableClipboard(key, padding,
+        menu.add(RemoteMenuEntry.disableClipboard(sessionId, padding,
            dismissFunc: cancelFunc));
      }

-      menu.add(
-          RemoteMenuEntry.insertLock(key, padding, dismissFunc: cancelFunc));
+      menu.add(RemoteMenuEntry.insertLock(sessionId, padding,
+          dismissFunc: cancelFunc));

      if (pi.platform == kPeerPlatformLinux || pi.sasEnabled) {
-        menu.add(RemoteMenuEntry.insertCtrlAltDel(key, padding,
+        menu.add(RemoteMenuEntry.insertCtrlAltDel(sessionId, padding,
            dismissFunc: cancelFunc));
      }
    }
--- a/flutter/lib/desktop/pages/server_page.dart
+++ b/flutter/lib/desktop/pages/server_page.dart
@@ -30,7 +30,7 @@ class _DesktopServerPageState extends State<DesktopServerPage>
  final tabController = gFFI.serverModel.tabController;
  @override
  void initState() {
-    gFFI.ffiModel.updateEventListener("");
+    gFFI.ffiModel.updateEventListener(gFFI.sessionId, "");
    windowManager.addListener(this);
    tabController.onRemoved = (_, id) {
      onRemoveId(id);
--- a/flutter/lib/desktop/widgets/remote_toolbar.dart
+++ b/flutter/lib/desktop/widgets/remote_toolbar.dart
@@ -141,14 +141,16 @@ class RemoteMenuEntry {
      ],
      curOptionGetter: () async {
        // null means peer id is not found, which there's no need to care about
-        final viewStyle = await bind.sessionGetViewStyle(id: remoteId) ?? '';
+        final viewStyle =
+            await bind.sessionGetViewStyle(sessionId: ffi.sessionId) ?? '';
        if (rxViewStyle != null) {
          rxViewStyle.value = viewStyle;
        }
        return viewStyle;
      },
      optionSetter: (String oldValue, String newValue) async {
-        await bind.sessionSetViewStyle(id: remoteId, value: newValue);
+        await bind.sessionSetViewStyle(
+            sessionId: ffi.sessionId, value: newValue);
        if (rxViewStyle != null) {
          rxViewStyle.value = newValue;
        }
@@ -165,6 +167,7 @@ class RemoteMenuEntry {

  static MenuEntrySwitch2<String> showRemoteCursor(
    String remoteId,
+    SessionID sessionId,
    EdgeInsets padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
@@ -178,9 +181,9 @@ class RemoteMenuEntry {
        return state;
      },
      setter: (bool v) async {
-        await bind.sessionToggleOption(id: remoteId, value: optKey);
+        await bind.sessionToggleOption(sessionId: sessionId, value: optKey);
        state.value =
-            bind.sessionGetToggleOptionSync(id: remoteId, arg: optKey);
+            bind.sessionGetToggleOptionSync(sessionId: sessionId, arg: optKey);
        if (dismissFunc != null) {
          dismissFunc();
        }
@@ -192,13 +195,13 @@ class RemoteMenuEntry {
  }

  static MenuEntrySwitch<String> disableClipboard(
-    String remoteId,
+    SessionID sessionId,
    EdgeInsets? padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
  }) {
    return createSwitchMenuEntry(
-      remoteId,
+      sessionId,
      'Disable clipboard',
      'disable-clipboard',
      padding,
@@ -208,7 +211,7 @@ class RemoteMenuEntry {
  }

  static MenuEntrySwitch<String> createSwitchMenuEntry(
-    String remoteId,
+    SessionID sessionId,
    String text,
    String option,
    EdgeInsets? padding,
@@ -220,10 +223,11 @@ class RemoteMenuEntry {
      switchType: SwitchType.scheckbox,
      text: translate(text),
      getter: () async {
-        return bind.sessionGetToggleOptionSync(id: remoteId, arg: option);
+        return bind.sessionGetToggleOptionSync(
+            sessionId: sessionId, arg: option);
      },
      setter: (bool v) async {
-        await bind.sessionToggleOption(id: remoteId, value: option);
+        await bind.sessionToggleOption(sessionId: sessionId, value: option);
        if (dismissFunc != null) {
          dismissFunc();
        }
@@ -235,7 +239,7 @@ class RemoteMenuEntry {
  }

  static MenuEntryButton<String> insertLock(
-    String remoteId,
+    SessionID sessionId,
    EdgeInsets? padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
@@ -246,7 +250,7 @@ class RemoteMenuEntry {
        style: style,
      ),
      proc: () {
-        bind.sessionLockScreen(id: remoteId);
+        bind.sessionLockScreen(sessionId: sessionId);
        if (dismissFunc != null) {
          dismissFunc();
        }
@@ -258,7 +262,7 @@ class RemoteMenuEntry {
  }

  static insertCtrlAltDel(
-    String remoteId,
+    SessionID sessionId,
    EdgeInsets? padding, {
    DismissFunc? dismissFunc,
    DismissCallback? dismissCallback,
@@ -269,7 +273,7 @@ class RemoteMenuEntry {
        style: style,
      ),
      proc: () {
-        bind.sessionCtrlAltDel(id: remoteId);
+        bind.sessionCtrlAltDel(sessionId: sessionId);
        if (dismissFunc != null) {
          dismissFunc();
        }
@@ -329,7 +333,8 @@ class _RemoteMenubarState extends State<RemoteMenubar> {

    Future.delayed(Duration.zero, () async {
      _fractionX.value = double.tryParse(await bind.sessionGetOption(
-                  id: widget.id, arg: 'remote-menubar-drag-x') ??
+                  sessionId: widget.ffi.sessionId,
+                  arg: 'remote-menubar-drag-x') ??
              '0.5') ??
          0.5;
    });
@@ -387,7 +392,7 @@ class _RemoteMenubarState extends State<RemoteMenubar> {
            elevation: _MenubarTheme.elevation,
            shadowColor: MyTheme.color(context).shadow,
            child: _DraggableShowHide(
-              id: widget.id,
+              sessionId: widget.ffi.sessionId,
              dragging: _dragging,
              fractionX: _fractionX,
              show: show,
@@ -621,7 +626,7 @@ class _MonitorMenu extends StatelessWidget {
          _menuDismissCallback(ffi);
          RxInt display = CurrentDisplayState.find(id);
          if (display.value != i) {
-            bind.sessionSwitchDisplay(id: id, value: i);
+            bind.sessionSwitchDisplay(sessionId: ffi.sessionId, value: i);
          }
        },
      ));
@@ -763,7 +768,8 @@ class ScreenAdjustor {
  }

  Future<bool> isWindowCanBeAdjusted() async {
-    final viewStyle = await bind.sessionGetViewStyle(id: id) ?? '';
+    final viewStyle =
+        await bind.sessionGetViewStyle(sessionId: ffi.sessionId) ?? '';
    if (viewStyle != kRemoteViewStyleOriginal) {
      return false;
    }
@@ -885,9 +891,11 @@ class _DisplayMenuState extends State<_DisplayMenu> {

  scrollStyle() {
    return futureBuilder(future: () async {
-      final viewStyle = await bind.sessionGetViewStyle(id: id) ?? '';
+      final viewStyle =
+          await bind.sessionGetViewStyle(sessionId: ffi.sessionId) ?? '';
      final visible = viewStyle == kRemoteViewStyleOriginal;
-      final scrollStyle = await bind.sessionGetScrollStyle(id: widget.id) ?? '';
+      final scrollStyle =
+          await bind.sessionGetScrollStyle(sessionId: ffi.sessionId) ?? '';
      return {'visible': visible, 'scrollStyle': scrollStyle};
    }(), hasData: (data) {
      final visible = data['visible'] as bool;
@@ -895,7 +903,8 @@ class _DisplayMenuState extends State<_DisplayMenu> {
      final groupValue = data['scrollStyle'] as String;
      onChange(String? value) async {
        if (value == null) return;
-        await bind.sessionSetScrollStyle(id: widget.id, value: value);
+        await bind.sessionSetScrollStyle(
+            sessionId: ffi.sessionId, value: value);
        widget.ffi.canvasModel.updateScrollStyle();
      }

@@ -1007,6 +1016,7 @@ class _ResolutionsMenuState extends State<_ResolutionsMenu> {
  late final TextEditingController _customHeight =
      TextEditingController(text: display.height.toString());

+  FFI get ffi => widget.ffi;
  PeerInfo get pi => widget.ffi.ffiModel.pi;
  FfiModel get ffiModel => widget.ffi.ffiModel;
  Display get display => ffiModel.display;
@@ -1101,7 +1111,7 @@ class _ResolutionsMenuState extends State<_ResolutionsMenu> {

  _changeResolution(int w, int h) async {
    await bind.sessionChangeResolution(
-      id: widget.id,
+      sessionId: ffi.sessionId,
      display: pi.currentDisplay,
      width: w,
      height: h,
@@ -1254,12 +1264,15 @@ class _KeyboardMenu extends StatelessWidget {
    if (!ffiModel.keyboard) return Offstage();
    String? modeOnly;
    if (stateGlobal.grabKeyboard) {
-      if (bind.sessionIsKeyboardModeSupported(id: id, mode: _kKeyMapMode)) {
-        bind.sessionSetKeyboardMode(id: id, value: _kKeyMapMode);
+      if (bind.sessionIsKeyboardModeSupported(
+          sessionId: ffi.sessionId, mode: _kKeyMapMode)) {
+        bind.sessionSetKeyboardMode(
+            sessionId: ffi.sessionId, value: _kKeyMapMode);
        modeOnly = _kKeyMapMode;
      } else if (bind.sessionIsKeyboardModeSupported(
-          id: id, mode: _kKeyLegacyMode)) {
-        bind.sessionSetKeyboardMode(id: id, value: _kKeyLegacyMode);
+          sessionId: ffi.sessionId, mode: _kKeyLegacyMode)) {
+        bind.sessionSetKeyboardMode(
+            sessionId: ffi.sessionId, value: _kKeyLegacyMode);
        modeOnly = _kKeyLegacyMode;
      }
    }
@@ -1279,7 +1292,8 @@ class _KeyboardMenu extends StatelessWidget {

  mode(String? modeOnly) {
    return futureBuilder(future: () async {
-      return await bind.sessionGetKeyboardMode(id: id) ?? _kKeyLegacyMode;
+      return await bind.sessionGetKeyboardMode(sessionId: ffi.sessionId) ??
+          _kKeyLegacyMode;
    }(), hasData: (data) {
      final groupValue = data as String;
      List<KeyboardModeMenu> modes = [
@@ -1291,14 +1305,15 @@ class _KeyboardMenu extends StatelessWidget {
      final enabled = !ffi.ffiModel.viewOnly;
      onChanged(String? value) async {
        if (value == null) return;
-        await bind.sessionSetKeyboardMode(id: id, value: value);
+        await bind.sessionSetKeyboardMode(
+            sessionId: ffi.sessionId, value: value);
      }

      for (KeyboardModeMenu mode in modes) {
        if (modeOnly != null && mode.key != modeOnly) {
          continue;
        } else if (!bind.sessionIsKeyboardModeSupported(
-            id: id, mode: mode.key)) {
+            sessionId: ffi.sessionId, mode: mode.key)) {
          continue;
        }

@@ -1351,7 +1366,8 @@ class _KeyboardMenu extends StatelessWidget {
        onChanged: enabled
            ? (value) async {
                if (value == null) return;
-                await bind.sessionToggleOption(id: id, value: 'view-only');
+                await bind.sessionToggleOption(
+                    sessionId: ffi.sessionId, value: 'view-only');
                ffiModel.setViewOnly(id, value);
              }
            : null,
@@ -1412,7 +1428,8 @@ class _ChatMenuState extends State<_ChatMenu> {
    return MenuButton(
      child: Text(translate('Voice call')),
      ffi: widget.ffi,
-      onPressed: () => bind.sessionRequestVoiceCall(id: widget.id),
+      onPressed: () =>
+          bind.sessionRequestVoiceCall(sessionId: widget.ffi.sessionId),
    );
  }
 }
@@ -1447,7 +1464,8 @@ class _VoiceCallMenu extends StatelessWidget {
        return _IconMenuButton(
            assetName: icon,
            tooltip: tooltip,
-            onPressed: () => bind.sessionCloseVoiceCall(id: id),
+            onPressed: () =>
+                bind.sessionCloseVoiceCall(sessionId: ffi.sessionId),
            color: _MenubarTheme.redColor,
            hoverColor: _MenubarTheme.hoverRedColor);
      },
@@ -1492,7 +1510,7 @@ class _CloseMenu extends StatelessWidget {
    return _IconMenuButton(
      assetName: 'assets/close.svg',
      tooltip: 'Close',
-      onPressed: () => clientClose(id, ffi.dialogManager),
+      onPressed: () => clientClose(ffi.sessionId, ffi.dialogManager),
      color: _MenubarTheme.redColor,
      hoverColor: _MenubarTheme.hoverRedColor,
    );
@@ -1753,13 +1771,13 @@ class RdoMenuButton<T> extends StatelessWidget {
 }

 class _DraggableShowHide extends StatefulWidget {
-  final String id;
+  final SessionID sessionId;
  final RxDouble fractionX;
  final RxBool dragging;
  final RxBool show;
  const _DraggableShowHide({
    Key? key,
-    required this.id,
+    required this.sessionId,
    required this.fractionX,
    required this.dragging,
    required this.show,
@@ -1826,7 +1844,7 @@ class _DraggableShowHideState extends State<_DraggableShowHide> {
          widget.fractionX.value = right;
        }
        bind.sessionPeerOption(
-          id: widget.id,
+          sessionId: widget.sessionId,
          name: 'remote-menubar-drag-x',
          value: widget.fractionX.value.toString(),
        );
@@ -1952,7 +1970,7 @@ class _MultiMonitorMenu extends StatelessWidget {
            ),
            onPressed: () {
              if (display.value != i) {
-                bind.sessionSwitchDisplay(id: id, value: i);
+                bind.sessionSwitchDisplay(sessionId: ffi.sessionId, value: i);
              }
            },
          );
--- a/flutter/lib/desktop/widgets/tabbar_widget.dart
+++ b/flutter/lib/desktop/widgets/tabbar_widget.dart
@@ -17,6 +17,7 @@ import 'package:flutter_svg/flutter_svg.dart';
 import 'package:get/get.dart';
 import 'package:get/get_rx/src/rx_workers/utils/debouncer.dart';
 import 'package:scroll_pos/scroll_pos.dart';
+import 'package:uuid/uuid.dart';
 import 'package:window_manager/window_manager.dart';

 import '../../utils/multi_window_manager.dart';
--- a/flutter/lib/mobile/pages/file_manager_page.dart
+++ b/flutter/lib/mobile/pages/file_manager_page.dart
@@ -73,7 +73,7 @@ class _FileManagerPageState extends State<FileManagerPage> {
      gFFI.dialogManager
          .showLoading(translate('Connecting...'), onCancel: closeConnection);
    });
-    gFFI.ffiModel.updateEventListener(widget.id);
+    gFFI.ffiModel.updateEventListener(gFFI.sessionId, widget.id);
    Wakelock.enable();
  }

@@ -104,7 +104,8 @@ class _FileManagerPageState extends State<FileManagerPage> {
          leading: Row(children: [
            IconButton(
                icon: Icon(Icons.close),
-                onPressed: () => clientClose(widget.id, gFFI.dialogManager)),
+                onPressed: () =>
+                    clientClose(gFFI.sessionId, gFFI.dialogManager)),
          ]),
          centerTitle: true,
          title: ToggleSwitch(
--- a/flutter/lib/mobile/pages/remote_page.dart
+++ b/flutter/lib/mobile/pages/remote_page.dart
@@ -54,6 +54,7 @@ class _RemotePageState extends State<RemotePage> {
  var _showEdit = false; // use soft keyboard

  InputModel get inputModel => gFFI.inputModel;
+  SessionID get sessionId => gFFI.sessionId;

  @override
  void initState() {
@@ -66,9 +67,9 @@ class _RemotePageState extends State<RemotePage> {
    });
    Wakelock.enable();
    _physicalFocusNode.requestFocus();
-    gFFI.ffiModel.updateEventListener(widget.id);
+    gFFI.ffiModel.updateEventListener(sessionId, widget.id);
    gFFI.inputModel.listenToMouse(true);
-    gFFI.qualityMonitorModel.checkShowQualityMonitor(widget.id);
+    gFFI.qualityMonitorModel.checkShowQualityMonitor(sessionId);
    keyboardSubscription =
        keyboardVisibilityController.onChange.listen(onSoftKeyboardChanged);
    _blockableOverlayState.applyFfi(gFFI);
@@ -130,7 +131,7 @@ class _RemotePageState extends State<RemotePage> {
      if (newValue.length > common) {
        var s = newValue.substring(common);
        if (s.length > 1) {
-          bind.sessionInputString(id: widget.id, value: s);
+          bind.sessionInputString(sessionId: sessionId, value: s);
        } else {
          inputChar(s);
        }
@@ -164,11 +165,11 @@ class _RemotePageState extends State<RemotePage> {
                content == '（）' ||
                content == '【】')) {
          // can not only input content[0], because when input ], [ are also auo insert, which cause ] never be input
-          bind.sessionInputString(id: widget.id, value: content);
+          bind.sessionInputString(sessionId: sessionId, value: content);
          openKeyboard();
          return;
        }
-        bind.sessionInputString(id: widget.id, value: content);
+        bind.sessionInputString(sessionId: sessionId, value: content);
      } else {
        inputChar(content);
      }
@@ -213,7 +214,7 @@ class _RemotePageState extends State<RemotePage> {

    return WillPopScope(
      onWillPop: () async {
-        clientClose(widget.id, gFFI.dialogManager);
+        clientClose(sessionId, gFFI.dialogManager);
        return false;
      },
      child: getRawPointerAndKeyBody(Scaffold(
@@ -305,7 +306,7 @@ class _RemotePageState extends State<RemotePage> {
                      color: Colors.white,
                      icon: Icon(Icons.clear),
                      onPressed: () {
-                        clientClose(widget.id, gFFI.dialogManager);
+                        clientClose(sessionId, gFFI.dialogManager);
                      },
                    )
                  ] +
@@ -476,7 +477,7 @@ class _RemotePageState extends State<RemotePage> {
        },
        onTwoFingerScaleEnd: (d) {
          _scale = 1;
-          bind.sessionSetViewStyle(id: widget.id, value: "");
+          bind.sessionSetViewStyle(sessionId: sessionId, value: "");
        },
        onThreeFingerVerticalDragUpdate: gFFI.ffiModel.isPeerAndroid
            ? null
@@ -535,7 +536,7 @@ class _RemotePageState extends State<RemotePage> {
    var paints = <Widget>[ImagePaint()];
    if (!gFFI.canvasModel.cursorEmbedded) {
      final cursor = bind.sessionGetToggleOptionSync(
-          id: widget.id, arg: 'show-remote-cursor');
+          sessionId: sessionId, arg: 'show-remote-cursor');
      if (keyboard || cursor) {
        paints.add(CursorPaint());
      }
@@ -579,7 +580,7 @@ class _RemotePageState extends State<RemotePage> {
                  gFFI.ffiModel.toggleTouchMode();
                  final v = gFFI.ffiModel.touchMode ? 'Y' : '';
                  bind.sessionPeerOption(
-                      id: widget.id, name: "touch", value: v);
+                      sessionId: sessionId, name: "touch", value: v);
                })));
  }

@@ -830,7 +831,7 @@ void showOptions(
      children.add(InkWell(
          onTap: () {
            if (i == cur) return;
-            bind.sessionSwitchDisplay(id: id, value: i);
+            bind.sessionSwitchDisplay(sessionId: gFFI.sessionId, value: i);
            gFFI.dialogManager.dismissAll();
          },
          child: Ink(
--- a/flutter/lib/models/chat_model.dart
+++ b/flutter/lib/models/chat_model.dart
@@ -74,7 +74,11 @@ class ChatModel with ChangeNotifier {

  final WeakReference<FFI> parent;

-  ChatModel(this.parent);
+  late final SessionID sessionId;
+
+  ChatModel(this.parent) {
+    sessionId = parent.target!.sessionId;
+  }

  FocusNode inputNode = FocusNode();

@@ -302,7 +306,7 @@ class ChatModel with ChangeNotifier {
      _messages[_currentID]?.insert(message);
      if (_currentID == clientModeID) {
        if (parent.target != null) {
-          bind.sessionSendChat(id: parent.target!.id, text: message.text);
+          bind.sessionSendChat(sessionId: sessionId, text: message.text);
        }
      } else {
        bind.cmSendChat(connId: _currentID, msg: message.text);
@@ -347,8 +351,8 @@ class ChatModel with ChangeNotifier {
    }
  }

-  void closeVoiceCall(String id) {
-    bind.sessionCloseVoiceCall(id: id);
+  void closeVoiceCall() {
+    bind.sessionCloseVoiceCall(sessionId: sessionId);
  }
 }

--- a/flutter/lib/models/file_model.dart
+++ b/flutter/lib/models/file_model.dart
@@ -33,11 +33,11 @@ class JobID {
  }
 }

-typedef GetSessionID = String Function();
+typedef GetSessionID = SessionID Function();

 class FileModel {
  final WeakReference<FFI> parent;
-  // late final String sessionID;
+  // late final String sessionId;
  late final FileFetcher fileFetcher;
  late final JobController jobController;

@@ -45,11 +45,11 @@ class FileModel {
  late final FileController remoteController;

  late final GetSessionID getSessionID;
-  String get sessionID => getSessionID();
+  SessionID get sessionId => getSessionID();
  late final FileDialogEventLoop evtLoop;

  FileModel(this.parent) {
-    getSessionID = () => parent.target?.id ?? "";
+    getSessionID = () => parent.target!.sessionId;
    fileFetcher = FileFetcher(getSessionID);
    jobController = JobController(getSessionID);
    localController = FileController(
@@ -133,7 +133,7 @@ class FileModel {
        evtLoop.setSkip(!need_override);
      }
      await bind.sessionSetConfirmOverrideFile(
-          id: sessionID,
+          sessionId: sessionId,
          actId: id,
          fileNum: int.parse(evt['file_num']),
          needOverride: need_override,
@@ -236,7 +236,7 @@ class DirectoryData {
 class FileController {
  final bool isLocal;
  final GetSessionID getSessionID;
-  String get sessionID => getSessionID();
+  SessionID get sessionId => getSessionID();

  final FileFetcher fileFetcher;

@@ -287,7 +287,7 @@ class FileController {
      options.value.home = await bind.mainGetHomeDir();
    }
    options.value.showHidden = (await bind.sessionGetPeerOption(
-            id: sessionID,
+            sessionId: sessionId,
            name: isLocal ? "local_show_hidden" : "remote_show_hidden"))
        .isNotEmpty;
    options.value.isWindows = isLocal
@@ -297,7 +297,7 @@ class FileController {
    await Future.delayed(Duration(milliseconds: 100));

    final dir = (await bind.sessionGetPeerOption(
-        id: sessionID, name: isLocal ? "local_dir" : "remote_dir"));
+        sessionId: sessionId, name: isLocal ? "local_dir" : "remote_dir"));
    openDirectory(dir.isEmpty ? options.value.home : dir);

    await Future.delayed(Duration(seconds: 1));
@@ -315,7 +315,7 @@ class FileController {
        options.value.showHidden ? "Y" : "";
    for (final msg in msgMap.entries) {
      await bind.sessionPeerOption(
-          id: sessionID, name: msg.key, value: msg.value);
+          sessionId: sessionId, name: msg.key, value: msg.value);
    }
    directory.value.clear();
    options.value.clear();
@@ -447,7 +447,7 @@ class FileController {
    for (var from in items.items) {
      final jobID = jobController.add(from, isRemoteToLocal);
      bind.sessionSendFiles(
-          id: sessionID,
+          sessionId: sessionId,
          actId: jobID,
          path: from.path,
          to: PathUtil.join(toPath, from.name, isWindows),
@@ -547,7 +547,8 @@ class FileController {

  Future<bool?> showRemoveDialog(
      String title, String content, bool showCheckbox) async {
-    return await dialogManager?.show<bool>((setState, Function(bool v) close, context) {
+    return await dialogManager?.show<bool>(
+        (setState, Function(bool v) close, context) {
      cancel() => close(false);
      submit() => close(true);
      return CustomAlertDialog(
@@ -611,7 +612,7 @@ class FileController {

  void sendRemoveFile(String path, int fileNum) {
    bind.sessionRemoveFile(
-        id: sessionID,
+        sessionId: sessionId,
        actId: JobController.jobID.next(),
        path: path,
        isRemote: !isLocal,
@@ -621,7 +622,7 @@ class FileController {
  void sendRemoveEmptyDir(String path, int fileNum) {
    history.removeWhere((element) => element.contains(path));
    bind.sessionRemoveAllEmptyDirs(
-        id: sessionID,
+        sessionId: sessionId,
        actId: JobController.jobID.next(),
        path: path,
        isRemote: !isLocal);
@@ -629,7 +630,7 @@ class FileController {

  Future<void> createDir(String path) async {
    bind.sessionCreateDir(
-        id: sessionID,
+        sessionId: sessionId,
        actId: JobController.jobID.next(),
        path: path,
        isRemote: !isLocal);
@@ -641,7 +642,7 @@ class JobController {
  final jobTable = List<JobProgress>.empty(growable: true).obs;
  final jobResultListener = JobResultListener<Map<String, dynamic>>();
  final GetSessionID getSessionID;
-  String get sessionID => getSessionID();
+  SessionID get sessionId => getSessionID();

  JobController(this.getSessionID);

@@ -719,7 +720,7 @@ class JobController {
  }

  Future<void> cancelJob(int id) async {
-    await bind.sessionCancelJob(id: sessionID, actId: id);
+    await bind.sessionCancelJob(sessionId: sessionId, actId: id);
  }

  void loadLastJob(Map<String, dynamic> evt) {
@@ -745,7 +746,7 @@ class JobController {
      ..state = JobState.paused;
    jobTable.add(jobProgress);
    bind.sessionAddJob(
-      id: sessionID,
+      sessionId: sessionId,
      isRemote: isRemote,
      includeHidden: showHidden,
      actId: currJobId,
@@ -760,7 +761,7 @@ class JobController {
    if (jobIndex != -1) {
      final job = jobTable[jobIndex];
      bind.sessionResumeJob(
-          id: sessionID, actId: job.id, isRemote: job.isRemoteToLocal);
+          sessionId: sessionId, actId: job.id, isRemote: job.isRemoteToLocal);
      job.state = JobState.inProgress;
      jobTable.refresh();
    } else {
@@ -831,7 +832,7 @@ class FileFetcher {
  Map<int, Completer<FileDirectory>> readRecursiveTasks = {};

  final GetSessionID getSessionID;
-  String get sessionID => getSessionID();
+  SessionID get sessionId => getSessionID();

  FileFetcher(this.getSessionID);

@@ -896,12 +897,12 @@ class FileFetcher {
    try {
      if (isLocal) {
        final res = await bind.sessionReadLocalDirSync(
-            id: sessionID, path: path, showHidden: showHidden);
+            sessionId: sessionId, path: path, showHidden: showHidden);
        final fd = FileDirectory.fromJson(jsonDecode(res));
        return fd;
      } else {
        await bind.sessionReadRemoteDir(
-            id: sessionID, path: path, includeHidden: showHidden);
+            sessionId: sessionId, path: path, includeHidden: showHidden);
        return registerReadTask(isLocal, path);
      }
    } catch (e) {
@@ -914,7 +915,7 @@ class FileFetcher {
    // TODO test Recursive is show hidden default?
    try {
      await bind.sessionReadDirRecursive(
-          id: sessionID,
+          sessionId: sessionId,
          actId: actID,
          path: path,
          isRemote: !isLocal,
--- a/flutter/lib/models/input_model.dart
+++ b/flutter/lib/models/input_model.dart
@@ -59,9 +59,13 @@ class InputModel {

  get id => parent.target?.id ?? "";

+  late final SessionID sessionId;
+
  bool get keyboardPerm => parent.target!.ffiModel.keyboard;

-  InputModel(this.parent);
+  InputModel(this.parent) {
+    sessionId = parent.target!.sessionId;
+  }

  KeyEventResult handleRawKeyEvent(FocusNode data, RawKeyEvent e) {
    if (isDesktop && !stateGlobal.grabKeyboard) {
@@ -70,7 +74,7 @@ class InputModel {

    // * Currently mobile does not enable map mode
    if (isDesktop) {
-      bind.sessionGetKeyboardMode(id: id).then((result) {
+      bind.sessionGetKeyboardMode(sessionId: sessionId).then((result) {
        keyboardMode = result.toString();
      });
    }
@@ -169,7 +173,7 @@ class InputModel {
      lockModes |= (1 << scrolllock);
    }
    bind.sessionHandleFlutterKeyEvent(
-        id: id,
+        sessionId: sessionId,
        name: name,
        platformCode: platformCode,
        positionCode: positionCode,
@@ -204,7 +208,7 @@ class InputModel {
  void inputKey(String name, {bool? down, bool? press}) {
    if (!keyboardPerm) return;
    bind.sessionInputKey(
-        id: id,
+        sessionId: sessionId,
        name: name,
        down: down ?? false,
        press: press ?? true,
@@ -264,7 +268,7 @@ class InputModel {
  /// Send scroll event with scroll distance [y].
  void scroll(int y) {
    bind.sessionSendMouse(
-        id: id,
+        sessionId: sessionId,
        msg: json
            .encode(modify({'id': id, 'type': 'wheel', 'y': y.toString()})));
  }
@@ -287,7 +291,7 @@ class InputModel {
  void sendMouse(String type, MouseButtons button) {
    if (!keyboardPerm) return;
    bind.sessionSendMouse(
-        id: id,
+        sessionId: sessionId,
        msg: json.encode(modify({'type': type, 'buttons': button.value})));
  }

@@ -297,7 +301,7 @@ class InputModel {
      resetModifiers();
    }
    _flingTimer?.cancel();
-    bind.sessionEnterOrLeave(id: id, enter: enter);
+    bind.sessionEnterOrLeave(sessionId: sessionId, enter: enter);
  }

  /// Send mouse movement event with distance in [x] and [y].
@@ -306,7 +310,8 @@ class InputModel {
    var x2 = x.toInt();
    var y2 = y.toInt();
    bind.sessionSendMouse(
-        id: id, msg: json.encode(modify({'x': '$x2', 'y': '$y2'})));
+        sessionId: sessionId,
+        msg: json.encode(modify({'x': '$x2', 'y': '$y2'})));
  }

  void onPointHoverImage(PointerHoverEvent e) {
@@ -333,7 +338,8 @@ class InputModel {
    var y = delta.dy.toInt();
    if (x != 0 || y != 0) {
      bind.sessionSendMouse(
-          id: id, msg: '{"type": "trackpad", "x": "$x", "y": "$y"}');
+          sessionId: sessionId,
+          msg: '{"type": "trackpad", "x": "$x", "y": "$y"}');
    }
  }

@@ -364,7 +370,8 @@ class InputModel {
      }

      bind.sessionSendMouse(
-          id: id, msg: '{"type": "trackpad", "x": "$dx", "y": "$dy"}');
+          sessionId: sessionId,
+          msg: '{"type": "trackpad", "x": "$dx", "y": "$dy"}');
      _scheduleFling(x, y, delay);
    });
  }
@@ -439,7 +446,8 @@ class InputModel {
        dy = 1;
      }
      bind.sessionSendMouse(
-          id: id, msg: '{"type": "wheel", "x": "$dx", "y": "$dy"}');
+          sessionId: sessionId,
+          msg: '{"type": "wheel", "x": "$dx", "y": "$dy"}');
    }
  }

@@ -632,7 +640,7 @@ class InputModel {
        break;
    }
    evt['buttons'] = buttons;
-    bind.sessionSendMouse(id: id, msg: json.encode(evt));
+    bind.sessionSendMouse(sessionId: sessionId, msg: json.encode(evt));
  }

  /// Web only
--- a/flutter/lib/models/model.dart
+++ b/flutter/lib/models/model.dart
@@ -27,6 +27,7 @@ import 'package:image/image.dart' as img2;
 import 'package:flutter_custom_cursor/cursor_manager.dart';
 import 'package:flutter_svg/flutter_svg.dart';
 import 'package:get/get.dart';
+import 'package:uuid/uuid.dart';
 import 'package:window_manager/window_manager.dart';

 import '../common.dart';
@@ -36,7 +37,7 @@ import 'input_model.dart';
 import 'platform_model.dart';

 typedef HandleMsgBox = Function(Map<String, dynamic> evt, String id);
-typedef ReconnectHandle = Function(OverlayDialogManager, String, bool);
+typedef ReconnectHandle = Function(OverlayDialogManager, SessionID, bool);
 final _waitForImage = <String, bool>{};

 class FfiModel with ChangeNotifier {
@@ -52,6 +53,7 @@ class FfiModel with ChangeNotifier {
  var _reconnects = 1;
  bool _viewOnly = false;
  WeakReference<FFI> parent;
+  late final SessionID sessionId;

  Map<String, bool> get permissions => _permissions;

@@ -77,6 +79,7 @@ class FfiModel with ChangeNotifier {

  FfiModel(this.parent) {
    clear();
+    sessionId = parent.target!.sessionId;
  }

  toggleTouchMode() {
@@ -139,20 +142,21 @@ class FfiModel with ChangeNotifier {
    _permissions.clear();
  }

-  StreamEventHandler startEventListener(String peerId) {
+  // todo: why called by two position
+  StreamEventHandler startEventListener(SessionID sessionId, String peerId) {
    return (evt) async {
      var name = evt['name'];
      if (name == 'msgbox') {
-        handleMsgBox(evt, peerId);
+        handleMsgBox(evt, sessionId, peerId);
      } else if (name == 'peer_info') {
        handlePeerInfo(evt, peerId);
      } else if (name == 'sync_peer_info') {
-        handleSyncPeerInfo(evt, peerId);
+        handleSyncPeerInfo(evt, sessionId);
      } else if (name == 'connection_ready') {
        setConnectionType(
            peerId, evt['secure'] == 'true', evt['direct'] == 'true');
      } else if (name == 'switch_display') {
-        handleSwitchDisplay(evt, peerId);
+        handleSwitchDisplay(evt, sessionId, peerId);
      } else if (name == 'cursor_data') {
        await parent.target?.cursorModel.updateCursorData(evt);
      } else if (name == 'cursor_id') {
@@ -193,7 +197,7 @@ class FfiModel with ChangeNotifier {
      } else if (name == 'update_block_input_state') {
        updateBlockInputState(evt, peerId);
      } else if (name == 'update_privacy_mode') {
-        updatePrivacyMode(evt, peerId);
+        updatePrivacyMode(evt, sessionId, peerId);
      } else if (name == 'new_connection') {
        var uni_links = evt['uni_links'].toString();
        if (uni_links.startsWith(kUniLinksPrefix)) {
@@ -205,10 +209,10 @@ class FfiModel with ChangeNotifier {
        final show = evt['show'].toString() == 'true';
        parent.target?.serverModel.setShowElevation(show);
      } else if (name == 'cancel_msgbox') {
-        cancelMsgBox(evt, peerId);
+        cancelMsgBox(evt, sessionId);
      } else if (name == 'switch_back') {
        final peer_id = evt['peer_id'].toString();
-        await bind.sessionSwitchSides(id: peer_id);
+        await bind.sessionSwitchSides(sessionId: sessionId);
        closeConnection(id: peer_id);
      } else if (name == 'portable_service_running') {
        parent.target?.elevationModel.onPortableServiceRunning(evt);
@@ -234,12 +238,12 @@ class FfiModel with ChangeNotifier {
      } else if (name == 'plugin_manager') {
        pluginManager.handleEvent(evt);
      } else if (name == 'plugin_event') {
-        handlePluginEvent(
-            evt, peerId, (Map<String, dynamic> e) => handleMsgBox(e, peerId));
+        handlePluginEvent(evt,
+            (Map<String, dynamic> e) => handleMsgBox(e, sessionId, peerId));
      } else if (name == 'plugin_reload') {
-        handleReloading(evt, peerId);
+        handleReloading(evt);
      } else if (name == 'plugin_option') {
-        handleOption(evt, peerId);
+        handleOption(evt);
      } else {
        debugPrint('Unknown event name: $name');
      }
@@ -271,8 +275,8 @@ class FfiModel with ChangeNotifier {
  }

  /// Bind the event listener to receive events from the Rust core.
-  updateEventListener(String peerId) {
-    platformFFI.setEventCallback(startEventListener(peerId));
+  updateEventListener(SessionID sessionId, String peerId) {
+    platformFFI.setEventCallback(startEventListener(sessionId, peerId));
  }

  handleAliasChanged(Map<String, dynamic> evt) {
@@ -282,18 +286,19 @@ class FfiModel with ChangeNotifier {
    }
  }

-  _updateCurDisplay(String peerId, Display newDisplay) {
+  _updateCurDisplay(SessionID sessionId, Display newDisplay) {
    if (newDisplay != _display) {
      if (newDisplay.x != _display.x || newDisplay.y != _display.y) {
        parent.target?.cursorModel
            .updateDisplayOrigin(newDisplay.x, newDisplay.y);
      }
      _display = newDisplay;
-      _updateSessionWidthHeight(peerId);
+      _updateSessionWidthHeight(sessionId);
    }
  }

-  handleSwitchDisplay(Map<String, dynamic> evt, String peerId) {
+  handleSwitchDisplay(
+      Map<String, dynamic> evt, SessionID sessionId, String peerId) {
    _pi.currentDisplay = int.parse(evt['display']);
    var newDisplay = Display();
    newDisplay.x = double.tryParse(evt['x']) ?? newDisplay.x;
@@ -306,7 +311,7 @@ class FfiModel with ChangeNotifier {
    newDisplay.originalHeight =
        int.tryParse(evt['original_height']) ?? kInvalidResolutionValue;

-    _updateCurDisplay(peerId, newDisplay);
+    _updateCurDisplay(sessionId, newDisplay);

    try {
      CurrentDisplayState.find(peerId).value = _pi.currentDisplay;
@@ -318,15 +323,15 @@ class FfiModel with ChangeNotifier {
    notifyListeners();
  }

-  cancelMsgBox(Map<String, dynamic> evt, String id) {
+  cancelMsgBox(Map<String, dynamic> evt, SessionID sessionId) {
    if (parent.target == null) return;
    final dialogManager = parent.target!.dialogManager;
-    final tag = '$id-${evt['tag']}';
+    final tag = '$sessionId-${evt['tag']}';
    dialogManager.dismissByTag(tag);
  }

  /// Handle the message box event based on [evt] and [id].
-  handleMsgBox(Map<String, dynamic> evt, String id) {
+  handleMsgBox(Map<String, dynamic> evt, SessionID sessionId, String peerId) {
    if (parent.target == null) return;
    final dialogManager = parent.target!.dialogManager;
    final type = evt['type'];
@@ -334,43 +339,43 @@ class FfiModel with ChangeNotifier {
    final text = evt['text'];
    final link = evt['link'];
    if (type == 're-input-password') {
-      wrongPasswordDialog(id, dialogManager, type, title, text);
+      wrongPasswordDialog(sessionId, dialogManager, type, title, text);
    } else if (type == 'input-password') {
-      enterPasswordDialog(id, dialogManager);
+      enterPasswordDialog(sessionId, dialogManager);
    } else if (type == 'session-login' || type == 'session-re-login') {
-      enterUserLoginDialog(id, dialogManager);
+      enterUserLoginDialog(sessionId, dialogManager);
    } else if (type == 'session-login-password' ||
        type == 'session-login-password') {
-      enterUserLoginAndPasswordDialog(id, dialogManager);
+      enterUserLoginAndPasswordDialog(sessionId, dialogManager);
    } else if (type == 'restarting') {
-      showMsgBox(id, type, title, text, link, false, dialogManager,
+      showMsgBox(sessionId, type, title, text, link, false, dialogManager,
          hasCancel: false);
    } else if (type == 'wait-remote-accept-nook') {
-      showWaitAcceptDialog(id, type, title, text, dialogManager);
+      showWaitAcceptDialog(sessionId, type, title, text, dialogManager);
    } else if (type == 'on-uac' || type == 'on-foreground-elevated') {
-      showOnBlockDialog(id, type, title, text, dialogManager);
+      showOnBlockDialog(sessionId, type, title, text, dialogManager);
    } else if (type == 'wait-uac') {
-      showWaitUacDialog(id, dialogManager, type);
+      showWaitUacDialog(sessionId, dialogManager, type);
    } else if (type == 'elevation-error') {
-      showElevationError(id, type, title, text, dialogManager);
+      showElevationError(sessionId, type, title, text, dialogManager);
    } else if (type == 'relay-hint') {
-      showRelayHintDialog(id, type, title, text, dialogManager);
+      showRelayHintDialog(sessionId, type, title, text, dialogManager);
    } else {
      var hasRetry = evt['hasRetry'] == 'true';
-      showMsgBox(id, type, title, text, link, hasRetry, dialogManager);
+      showMsgBox(sessionId, type, title, text, link, hasRetry, dialogManager);
    }
  }

  /// Show a message box with [type], [title] and [text].
-  showMsgBox(String id, String type, String title, String text, String link,
-      bool hasRetry, OverlayDialogManager dialogManager,
+  showMsgBox(SessionID sessionId, String type, String title, String text,
+      String link, bool hasRetry, OverlayDialogManager dialogManager,
      {bool? hasCancel}) {
-    msgBox(id, type, title, text, link, dialogManager,
+    msgBox(sessionId, type, title, text, link, dialogManager,
        hasCancel: hasCancel, reconnect: reconnect);
    _timer?.cancel();
    if (hasRetry) {
      _timer = Timer(Duration(seconds: _reconnects), () {
-        reconnect(dialogManager, id, false);
+        reconnect(dialogManager, sessionId, false);
      });
      _reconnects *= 2;
    } else {
@@ -378,17 +383,17 @@ class FfiModel with ChangeNotifier {
    }
  }

-  void reconnect(
-      OverlayDialogManager dialogManager, String id, bool forceRelay) {
-    bind.sessionReconnect(id: id, forceRelay: forceRelay);
+  void reconnect(OverlayDialogManager dialogManager, SessionID sessionId,
+      bool forceRelay) {
+    bind.sessionReconnect(sessionId: sessionId, forceRelay: forceRelay);
    clearPermissions();
    dialogManager.showLoading(translate('Connecting...'),
        onCancel: closeConnection);
  }

-  void showRelayHintDialog(String id, String type, String title, String text,
-      OverlayDialogManager dialogManager) {
-    dialogManager.show(tag: '$id-$type', (setState, close, context) {
+  void showRelayHintDialog(SessionID sessionId, String type, String title,
+      String text, OverlayDialogManager dialogManager) {
+    dialogManager.show(tag: '$sessionId-$type', (setState, close, context) {
      onClose() {
        closeConnection();
        close();
@@ -403,15 +408,17 @@ class FfiModel with ChangeNotifier {
        actions: [
          dialogButton('Close', onPressed: onClose, isOutline: true),
          dialogButton('Retry',
-              onPressed: () => reconnect(dialogManager, id, false)),
+              onPressed: () => reconnect(dialogManager, sessionId, false)),
          dialogButton('Connect via relay',
-              onPressed: () => reconnect(dialogManager, id, true),
+              onPressed: () => reconnect(dialogManager, sessionId, true),
              buttonStyle: style),
          dialogButton('Always connect via relay', onPressed: () {
            const option = 'force-always-relay';
            bind.sessionPeerOption(
-                id: id, name: option, value: bool2option(option, true));
-            reconnect(dialogManager, id, true);
+                sessionId: sessionId,
+                name: option,
+                value: bool2option(option, true));
+            reconnect(dialogManager, sessionId, true);
          }, buttonStyle: style),
        ],
        onCancel: onClose,
@@ -419,13 +426,14 @@ class FfiModel with ChangeNotifier {
    });
  }

-  _updateSessionWidthHeight(String id) {
+  _updateSessionWidthHeight(SessionID sessionId) {
    parent.target?.canvasModel.updateViewStyle();
    if (display.width <= 0 || display.height <= 0) {
      debugPrintStack(
          label: 'invalid display size (${display.width},${display.height})');
    } else {
-      bind.sessionSetSize(id: id, width: display.width, height: display.height);
+      bind.sessionSetSize(
+          sessionId: sessionId, width: display.width, height: display.height);
    }
  }

@@ -461,8 +469,9 @@ class FfiModel with ChangeNotifier {
                .showMobileActionsOverlay(ffi: parent.target!));
      }
    } else {
-      _touchMode =
-          await bind.sessionGetOption(id: peerId, arg: 'touch-mode') != '';
+      _touchMode = await bind.sessionGetOption(
+              sessionId: sessionId, arg: 'touch-mode') !=
+          '';
    }

    if (connType == ConnType.fileTransfer) {
@@ -476,7 +485,7 @@ class FfiModel with ChangeNotifier {
      stateGlobal.displaysCount.value = _pi.displays.length;
      if (_pi.currentDisplay < _pi.displays.length) {
        _display = _pi.displays[_pi.currentDisplay];
-        _updateSessionWidthHeight(peerId);
+        _updateSessionWidthHeight(sessionId);
      }
      if (displays.isNotEmpty) {
        parent.target?.dialogManager.showLoading(
@@ -491,8 +500,10 @@ class FfiModel with ChangeNotifier {
      parent.target?.elevationModel.onPeerInfo(_pi);
    }
    if (connType == ConnType.defaultConn) {
-      setViewOnly(peerId,
-          bind.sessionGetToggleOptionSync(id: peerId, arg: 'view-only'));
+      setViewOnly(
+          peerId,
+          bind.sessionGetToggleOptionSync(
+              sessionId: sessionId, arg: 'view-only'));
    }
    if (connType == ConnType.defaultConn) {
      final platform_additions = evt['platform_additions'];
@@ -547,7 +558,7 @@ class FfiModel with ChangeNotifier {
  }

  /// Handle the peer info synchronization event based on [evt].
-  handleSyncPeerInfo(Map<String, dynamic> evt, String peerId) async {
+  handleSyncPeerInfo(Map<String, dynamic> evt, SessionID sessionId) async {
    if (evt['displays'] != null) {
      List<dynamic> displays = json.decode(evt['displays']);
      List<Display> newDisplays = [];
@@ -557,7 +568,7 @@ class FfiModel with ChangeNotifier {
      _pi.displays = newDisplays;
      stateGlobal.displaysCount.value = _pi.displays.length;
      if (_pi.currentDisplay >= 0 && _pi.currentDisplay < _pi.displays.length) {
-        _updateCurDisplay(peerId, _pi.displays[_pi.currentDisplay]);
+        _updateCurDisplay(sessionId, _pi.displays[_pi.currentDisplay]);
      }
    }
    notifyListeners();
@@ -573,11 +584,12 @@ class FfiModel with ChangeNotifier {
    }
  }

-  updatePrivacyMode(Map<String, dynamic> evt, String peerId) {
+  updatePrivacyMode(
+      Map<String, dynamic> evt, SessionID sessionId, String peerId) {
    notifyListeners();
    try {
-      PrivacyModeState.find(peerId).value =
-          bind.sessionGetToggleOptionSync(id: peerId, arg: 'privacy-mode');
+      PrivacyModeState.find(peerId).value = bind.sessionGetToggleOptionSync(
+          sessionId: sessionId, arg: 'privacy-mode');
    } catch (e) {
      //
    }
@@ -592,8 +604,8 @@ class FfiModel with ChangeNotifier {
      if (value) {
        ShowRemoteCursorState.find(id).value = value;
      } else {
-        ShowRemoteCursorState.find(id).value =
-            bind.sessionGetToggleOptionSync(id: id, arg: 'show-remote-cursor');
+        ShowRemoteCursorState.find(id).value = bind.sessionGetToggleOptionSync(
+            sessionId: sessionId, arg: 'show-remote-cursor');
      }
    } catch (e) {
      //
@@ -612,11 +624,15 @@ class ImageModel with ChangeNotifier {

  String id = '';

+  late final SessionID sessionId;
+
  WeakReference<FFI> parent;

  final List<Function(String)> callbacksOnFirstImage = [];

-  ImageModel(this.parent);
+  ImageModel(this.parent) {
+    sessionId = parent.target!.sessionId;
+  }

  addCallbackOnFirstImage(Function(String) cb) => callbacksOnFirstImage.add(cb);

@@ -645,7 +661,7 @@ class ImageModel with ChangeNotifier {
        isWeb ? ui.PixelFormat.rgba8888 : ui.PixelFormat.bgra8888,
        onPixelsCopied: () {
      // Unlock the rgba memory from rust codes.
-      platformFFI.nextRgba(id);
+      platformFFI.nextRgba(sessionId);
    }).then((image) {
      if (parent.target?.id != pid) return;
      try {
@@ -674,7 +690,7 @@ class ImageModel with ChangeNotifier {
        await initializeCursorAndCanvas(parent.target!);
      }
      if (parent.target?.ffiModel.isPeerAndroid ?? false) {
-        bind.sessionSetViewStyle(id: id, value: 'adaptive');
+        bind.sessionSetViewStyle(sessionId: sessionId, value: 'adaptive');
        parent.target?.canvasModel.updateViewStyle();
      }
    }
@@ -793,6 +809,7 @@ class CanvasModel with ChangeNotifier {
  // double windowBorderWidth = 0.0;
  // remote id
  String id = '';
+  late final SessionID sessionId;
  // scroll offset x percent
  double _scrollX = 0.0;
  // scroll offset y percent
@@ -804,7 +821,9 @@ class CanvasModel with ChangeNotifier {

  WeakReference<FFI> parent;

-  CanvasModel(this.parent);
+  CanvasModel(this.parent) {
+    sessionId = parent.target!.sessionId;
+  }

  double get x => _x;
  double get y => _y;
@@ -847,7 +866,7 @@ class CanvasModel with ChangeNotifier {
      return Size(w < 0 ? 0 : w, h < 0 ? 0 : h);
    }

-    final style = await bind.sessionGetViewStyle(id: id);
+    final style = await bind.sessionGetViewStyle(sessionId: sessionId);
    if (style == null) {
      return;
    }
@@ -883,7 +902,7 @@ class CanvasModel with ChangeNotifier {
  }

  updateScrollStyle() async {
-    final style = await bind.sessionGetScrollStyle(id: id);
+    final style = await bind.sessionGetScrollStyle(sessionId: sessionId);
    if (style == kRemoteScrollStyleBar) {
      _scrollStyle = ScrollStyle.scrollbar;
      _resetScroll();
@@ -1358,8 +1377,8 @@ class CursorModel with ChangeNotifier {
  Future<bool> _updateCache(
      Uint8List rgba, ui.Image image, int id, int w, int h) async {
    Uint8List? data;
-    img2.Image imgOrigin =
-        img2.Image.fromBytes(width: w, height:h, bytes: rgba.buffer, order: img2.ChannelOrder.rgba);
+    img2.Image imgOrigin = img2.Image.fromBytes(
+        width: w, height: h, bytes: rgba.buffer, order: img2.ChannelOrder.rgba);
    if (Platform.isWindows) {
      data = imgOrigin.getBytes(order: img2.ChannelOrder.bgra);
    } else {
@@ -1474,9 +1493,9 @@ class QualityMonitorModel with ChangeNotifier {
  bool get show => _show;
  QualityMonitorData get data => _data;

-  checkShowQualityMonitor(String id) async {
+  checkShowQualityMonitor(SessionID sessionId) async {
    final show = await bind.sessionGetToggleOption(
-            id: id, arg: 'show-quality-monitor') ==
+            sessionId: sessionId, arg: 'show-quality-monitor') ==
        true;
    if (_show != show) {
      _show = show;
@@ -1510,32 +1529,35 @@ class RecordingModel with ChangeNotifier {

  onSwitchDisplay() {
    if (isIOS || !_start) return;
-    var id = parent.target?.id;
+    final sessionId = parent.target?.sessionId;
    int? width = parent.target?.canvasModel.getDisplayWidth();
    int? height = parent.target?.canvasModel.getDisplayHeight();
-    if (id == null || width == null || height == null) return;
-    bind.sessionRecordScreen(id: id, start: true, width: width, height: height);
+    if (sessionId == null || width == null || height == null) return;
+    bind.sessionRecordScreen(
+        sessionId: sessionId, start: true, width: width, height: height);
  }

  toggle() {
    if (isIOS) return;
-    var id = parent.target?.id;
-    if (id == null) return;
+    final sessionId = parent.target?.sessionId;
+    if (sessionId == null) return;
    _start = !_start;
    notifyListeners();
    if (_start) {
-      bind.sessionRefresh(id: id);
+      bind.sessionRefresh(sessionId: sessionId);
    } else {
-      bind.sessionRecordScreen(id: id, start: false, width: 0, height: 0);
+      bind.sessionRecordScreen(
+          sessionId: sessionId, start: false, width: 0, height: 0);
    }
  }

  onClose() {
    if (isIOS) return;
-    var id = parent.target?.id;
-    if (id == null) return;
+    final sessionId = parent.target?.sessionId;
+    if (sessionId == null) return;
    _start = false;
-    bind.sessionRecordScreen(id: id, start: false, width: 0, height: 0);
+    bind.sessionRecordScreen(
+        sessionId: sessionId, start: false, width: 0, height: 0);
  }
 }

@@ -1558,6 +1580,7 @@ enum ConnType { defaultConn, fileTransfer, portForward, rdp }

 /// Flutter state manager and data communication with the Rust core.
 class FFI {
+  final sessionId = Uuid().v4obj();
  var id = '';
  var version = '';
  var connType = ConnType.defaultConn;
@@ -1610,10 +1633,8 @@ class FFI {
    assert(!(isFileTransfer && isPortForward), 'more than one connect type');
    if (isFileTransfer) {
      connType = ConnType.fileTransfer;
-      id = 'ft_$id';
    } else if (isPortForward) {
      connType = ConnType.portForward;
-      id = 'pf_$id';
    } else {
      chatModel.resetClientMode();
      connType = ConnType.defaultConn;
@@ -1623,6 +1644,7 @@ class FFI {
    }
    // ignore: unused_local_variable
    final addRes = bind.sessionAddSync(
+      sessionId: sessionId,
      id: id,
      isFileTransfer: isFileTransfer,
      isPortForward: isPortForward,
@@ -1631,8 +1653,8 @@ class FFI {
      forceRelay: forceRelay ?? false,
      password: password ?? "",
    );
-    final stream = bind.sessionStart(id: id);
-    final cb = ffiModel.startEventListener(id);
+    final stream = bind.sessionStart(sessionId: sessionId, id: id);
+    final cb = ffiModel.startEventListener(sessionId, id);
    () async {
      final useTextureRender = bind.mainUseTextureRender();
      // Preserved for the rgba data.
@@ -1664,11 +1686,11 @@ class FFI {
            }
          } else {
            // Fetch the image buffer from rust codes.
-            final sz = platformFFI.getRgbaSize(id);
+            final sz = platformFFI.getRgbaSize(sessionId);
            if (sz == null || sz == 0) {
              return;
            }
-            final rgba = platformFFI.getRgba(id, sz);
+            final rgba = platformFFI.getRgba(sessionId, sz);
            if (rgba != null) {
              imageModel.onRgba(rgba);
            }
@@ -1682,10 +1704,10 @@ class FFI {
  }

  /// Login with [password], choose if the client should [remember] it.
-  void login(String osUsername, String osPassword, String id, String password,
-      bool remember) {
+  void login(String osUsername, String osPassword, SessionID sessionId,
+      String password, bool remember) {
    bind.sessionLogin(
-        id: id,
+        sessionId: sessionId,
        osUsername: osUsername,
        osPassword: osPassword,
        password: password,
@@ -1696,15 +1718,21 @@ class FFI {
  Future<void> close() async {
    chatModel.close();
    if (imageModel.image != null && !isWebDesktop) {
-      await setCanvasConfig(id, cursorModel.x, cursorModel.y, canvasModel.x,
-          canvasModel.y, canvasModel.scale, ffiModel.pi.currentDisplay);
+      await setCanvasConfig(
+          sessionId,
+          cursorModel.x,
+          cursorModel.y,
+          canvasModel.x,
+          canvasModel.y,
+          canvasModel.scale,
+          ffiModel.pi.currentDisplay);
    }
    imageModel.update(null);
    cursorModel.clear();
    ffiModel.clear();
    canvasModel.clear();
    inputModel.resetModifiers();
-    await bind.sessionClose(id: id);
+    await bind.sessionClose(sessionId: sessionId);
    debugPrint('model $id closed');
    id = '';
  }
@@ -1795,8 +1823,14 @@ class PeerInfo {

 const canvasKey = 'canvas';

-Future<void> setCanvasConfig(String id, double xCursor, double yCursor,
-    double xCanvas, double yCanvas, double scale, int currentDisplay) async {
+Future<void> setCanvasConfig(
+    SessionID sessionId,
+    double xCursor,
+    double yCursor,
+    double xCanvas,
+    double yCanvas,
+    double scale,
+    int currentDisplay) async {
  final p = <String, dynamic>{};
  p['xCursor'] = xCursor;
  p['yCursor'] = yCursor;
@@ -1804,12 +1838,14 @@ Future<void> setCanvasConfig(String id, double xCursor, double yCursor,
  p['yCanvas'] = yCanvas;
  p['scale'] = scale;
  p['currentDisplay'] = currentDisplay;
-  await bind.sessionSetFlutterConfig(id: id, k: canvasKey, v: jsonEncode(p));
+  await bind.sessionSetFlutterConfig(
+      sessionId: sessionId, k: canvasKey, v: jsonEncode(p));
 }

-Future<Map<String, dynamic>?> getCanvasConfig(String id) async {
+Future<Map<String, dynamic>?> getCanvasConfig(SessionID sessionId) async {
  if (!isWebDesktop) return null;
-  var p = await bind.sessionGetFlutterConfig(id: id, k: canvasKey);
+  var p =
+      await bind.sessionGetFlutterConfig(sessionId: sessionId, k: canvasKey);
  if (p == null || p.isEmpty) return null;
  try {
    Map<String, dynamic> m = json.decode(p);
@@ -1819,12 +1855,8 @@ Future<Map<String, dynamic>?> getCanvasConfig(String id) async {
  }
 }

-void removePreference(String id) async {
-  await bind.sessionSetFlutterConfig(id: id, k: canvasKey, v: '');
-}
-
 Future<void> initializeCursorAndCanvas(FFI ffi) async {
-  var p = await getCanvasConfig(ffi.id);
+  var p = await getCanvasConfig(ffi.sessionId);
  int currentDisplay = 0;
  if (p != null) {
    currentDisplay = p['currentDisplay'];
--- a/flutter/lib/models/native_model.dart
+++ b/flutter/lib/models/native_model.dart
@@ -104,9 +104,10 @@ class PlatformFFI {
    return res;
  }

-  Uint8List? getRgba(String id, int bufSize) {
+  Uint8List? getRgba(SessionID sessionId, int bufSize) {
    if (_session_get_rgba == null) return null;
-    var a = id.toNativeUtf8();
+    final sessionIdStr = sessionId.toString();
+    var a = sessionIdStr.toNativeUtf8();
    try {
      final buffer = _session_get_rgba!(a);
      if (buffer == nullptr) {
@@ -119,24 +120,27 @@ class PlatformFFI {
    }
  }

-  int? getRgbaSize(String id) {
+  int? getRgbaSize(SessionID sessionId) {
    if (_session_get_rgba_size == null) return null;
-    var a = id.toNativeUtf8();
+    final sessionIdStr = sessionId.toString();
+    var a = sessionIdStr.toNativeUtf8();
    final bufferSize = _session_get_rgba_size!(a);
    malloc.free(a);
    return bufferSize;
  }

-  void nextRgba(String id) {
+  void nextRgba(SessionID sessionId) {
    if (_session_next_rgba == null) return;
-    final a = id.toNativeUtf8();
+    final sessionIdStr = sessionId.toString();
+    final a = sessionIdStr.toNativeUtf8();
    _session_next_rgba!(a);
    malloc.free(a);
  }

-  void registerTexture(String id, int ptr) {
+  void registerTexture(SessionID sessionId, int ptr) {
    if (_session_register_texture == null) return;
-    final a = id.toNativeUtf8();
+    final sessionIdStr = sessionId.toString();
+    final a = sessionIdStr.toNativeUtf8();
    _session_register_texture!(a, ptr);
    malloc.free(a);
  }
--- a/flutter/lib/models/server_model.dart
+++ b/flutter/lib/models/server_model.dart
@@ -343,7 +343,7 @@ class ServerModel with ChangeNotifier {
  Future<void> startService() async {
    _isStart = true;
    notifyListeners();
-    parent.target?.ffiModel.updateEventListener("");
+    parent.target?.ffiModel.updateEventListener(parent.target!.sessionId, "");
    await parent.target?.invokeMethod("init_service");
    // ugly is here, because for desktop, below is useless
    await bind.mainStartService();
--- a/flutter/lib/plugin/event.dart
+++ b/flutter/lib/plugin/event.dart
@@ -3,7 +3,6 @@ import 'package:flutter/material.dart';

 void handlePluginEvent(
  Map<String, dynamic> evt,
-  String peer,
  Function(Map<String, dynamic> e) handleMsgBox,
 ) {
  Map<String, dynamic>? content;
--- a/flutter/lib/plugin/widgets/desc_ui.dart
+++ b/flutter/lib/plugin/widgets/desc_ui.dart
@@ -275,7 +275,7 @@ class PluginItem extends StatelessWidget {
  }
 }

-void handleReloading(Map<String, dynamic> evt, String peer) {
+void handleReloading(Map<String, dynamic> evt) {
  if (evt['id'] == null || evt['location'] == null) {
    return;
  }
@@ -295,7 +295,7 @@ void handleReloading(Map<String, dynamic> evt, String peer) {
  }
 }

-void handleOption(Map<String, dynamic> evt, String peer) {
+void handleOption(Map<String, dynamic> evt) {
  updateOption(
      evt['location'], evt['id'], evt['peer'] ?? '', evt['key'], evt['value']);
 }
--- a/flutter/pubspec.lock
+++ b/flutter/pubspec.lock
@@ -1331,7 +1331,7 @@ packages:
    source: hosted
    version: "3.0.3"
  uuid:
-    dependency: transitive
+    dependency: "direct main"
    description:
      name: uuid
      sha256: "648e103079f7c64a36dc7d39369cabb358d377078a051d6ae2ad3aa539519313"
--- a/flutter/pubspec.yaml
+++ b/flutter/pubspec.yaml
@@ -95,6 +95,7 @@ dependencies:
  texture_rgba_renderer: ^0.0.16
  percent_indicator: ^4.2.2
  dropdown_button2: ^2.0.0
+  uuid: ^3.0.7

 dev_dependencies:
  icons_launcher: ^2.0.4