use uuid as session id

Signed-off-by: 21pages <pages21@163.com>

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);
   }
 }
 

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,

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

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'];

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);
   }

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();