diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/.gitignore b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/.gitignore
new file mode 100644
index 00000000..24476c5d
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/.gitignore
@@ -0,0 +1,44 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/chat_controller.dart b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/chat_controller.dart
new file mode 100644
index 00000000..071ddf7d
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/chat_controller.dart
@@ -0,0 +1,201 @@
+import 'dart:async';
+
+import 'package:get/get.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/conf/config_entity.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/auto_relogin_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/keep_alive_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_sender.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/qos_4_receive_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/qos_4_send_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/event/chat_base_event.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/event/chat_message_event.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/event/message_qoS_event.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Ext.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/c/p_login_info.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_kickout_info.dart';
+import 'package:oktoast/oktoast.dart';
+
+import 'test_home_page.dart';
+
+class ChatBaseEventImpl extends ChatBaseEvent {
+  final _tag = "登录";
+
+  late ChatController _chat;
+
+  void setChatController(ChatController chatController) {
+    _chat = chatController;
+  }
+
+  void _refreshState() {
+    _chat.refreshState();
+  }
+
+
+  @override
+  void onLinkClose(int errorCode) {
+    _refreshState();
+    final info =
+        "[error] $_tag ${nowHmsStrWithMark()} 与服务端的通信断开的回调事件通知:$errorCode";
+    Log.error(info, _tag);
+    _chat.msgList.add(info);
+  }
+
+  @override
+  void onLoginResponse(int errorCode) {
+    _refreshState();
+    final info = "$_tag ${nowHmsStrWithMark()} 结果:$errorCode";
+    Log.info(info, _tag);
+    _chat.msgList.add(info);
+    ClientCoreSDK.getInstance().setLoginHasInit(errorCode == 0);
+    if (errorCode == 0) {
+      Get.to(const TestHomePage());
+    } else {
+      showToast("登录失败:$errorCode");
+    }
+  }
+
+  @override
+  void onKickOut(PKickoutInfo kickOutInfo) {
+    _refreshState();
+    final info = "[error] $_tag ${nowHmsStrWithMark()} 被踢:$kickOutInfo";
+    Log.error(info, _tag);
+    _chat.msgList.add(info);
+  }
+
+}
+
+class ChatMessageEventImpl extends ChatMessageEvent {
+  final _tag = "消息";
+
+  late ChatController _chat;
+
+  void setChatController(ChatController chatController) {
+    _chat = chatController;
+  }
+
+  void _refreshMsg() {}
+
+  @override
+  void onErrorResponse(int errorCode, String errorMsg) {
+    final info =
+        "$_tag ${nowHmsStrWithMark()} 【DEBUG_UI】收到服务端错误消息，errorCode=$errorCode errorMsg:$errorMsg";
+    Log.warn(info, _tag);
+    _chat.msgList.add(info);
+  }
+
+  @override
+  void onReceiveMessage(String fingerPrintOfProtocol, String userid,
+      String dataContent, int typeu) {
+    final info =
+        "$_tag ${nowHmsStrWithMark()} 【DEBUG_UI】[typeu=$typeu]收到来自用户 $userid 的消息: $dataContent";
+    Log.info(info, _tag);
+    _chat.msgList.add(info);
+    _chat.newestReceiveMsg.value = info;
+  }
+}
+
+class MessageQoSEventImpl extends MessageQoSEvent {
+  final _tag = "消息QoS";
+
+  late ChatController _chat;
+
+  void setChatController(ChatController chatController) {
+    _chat = chatController;
+  }
+
+  void _refreshState() {}
+
+  @override
+  void messagesBeReceived(String theFingerPrint) {
+    final info =
+        "$_tag ${nowHmsStrWithMark()} 【DEBUG_UI】收到对方已收到消息事件的通知，fp=$theFingerPrint";
+    Log.info(info, _tag);
+    _chat.msgList.add(info);
+  }
+
+  @override
+  void messagesLost(List<Protocol> lostMessages) {
+    final info =
+        "$_tag ${nowHmsStrWithMark()} 【DEBUG_UI】收到系统的未实时送达事件通知，当前共有 ${lostMessages.length} 个包QoS保证机制结束，判定为【无法实时送达】！";
+    Log.warn(info, _tag);
+    _chat.msgList.add(info);
+  }
+}
+
+class ChatController extends GetxController {
+  final sdk = ClientCoreSDK.getInstance();
+
+  final linkState = false.obs;
+
+  /// 重连
+  final reLinkState = false.obs;
+
+  /// 心跳
+  final heartbeatState = false.obs;
+
+  /// 送达（发）
+  final qosSendState = false.obs;
+
+  /// 送达（收）
+  final qosReceiveState = false.obs;
+
+  final msgList = RxList();
+
+  final newestReceiveMsg = "".obs;
+
+  Timer? _periodicSecTimer;
+
+  @override
+  void onInit() {
+    super.onInit();
+    _initSdk();
+    _periodicSecTimer = Timer.periodic(const Duration(seconds: 3), (timer) {
+      refreshState();
+    });
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    _periodicSecTimer?.cancel();
+    sdk.release();
+  }
+
+  void _initSdk() {
+    msgList.clear();
+    sdk
+      ..init()
+      ..setChatBaseEvent(ChatBaseEventImpl()..setChatController(this))
+      ..setChatMessageEvent(ChatMessageEventImpl()..setChatController(this))
+      ..setMessageQoSEvent(MessageQoSEventImpl()..setChatController(this));
+  }
+
+  void refreshState() {
+    linkState.value = sdk.isConnectedToServer();
+    reLinkState.value = AutoReLoginDaemon.getInstance().isAutoReLoginRunning();
+    heartbeatState.value = KeepAliveDaemon.getInstance().isKeepAliveRunning();
+    qosSendState.value = QoS4SendDaemon.getInstance().isRunning();
+    qosReceiveState.value = QoS4ReceiveDaemon.getInstance().isRunning();
+  }
+
+  void doLogin(String ip, int port, String name, String pwd) {
+    _initSdk();
+
+    ConfigEntity.serverIP = ip;
+    ConfigEntity.serverPort = port;
+
+    LocalDataSender.getInstance().sendLogin(PLoginInfo(name, loginToken: pwd));
+  }
+
+  void logout() {
+    var i = LocalDataSender.getInstance().sendLogout();
+    if (i == 0) {
+      showToast("退出登录成功");
+      sdk.release();
+    }
+    refreshState();
+  }
+}
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/loading_button.dart b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/loading_button.dart
new file mode 100644
index 00000000..dc688bbd
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/loading_button.dart
@@ -0,0 +1,92 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+/// 有加载动画的按钮
+class LoadingButton extends StatefulWidget {
+  final bool loading;
+  final String title;
+  final String loadingText;
+  final TextStyle? titleStyle;
+  final Widget? indicator;
+  final Color? loadingColor;
+  final Color? color;
+  final double radius;
+  final double width;
+  final double height;
+  final VoidCallback? onTap;
+
+  const LoadingButton({
+    super.key,
+    this.loading = false,
+    required this.title,
+    this.loadingText = '加载中',
+    this.titleStyle,
+    this.loadingColor,
+    this.color,
+    this.radius = 0,
+    this.height = 30,
+    this.width = 100,
+    this.indicator,
+    this.onTap,
+  });
+
+  @override
+  State<LoadingButton> createState() => _LoadingButtonState();
+}
+
+class _LoadingButtonState extends State<LoadingButton> {
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  /// 标题
+  Text _titleWidget() => Text(
+        widget.loading ? widget.loadingText : widget.title,
+        style: widget.titleStyle ??
+            const TextStyle(
+              fontSize: 16,
+              color: Colors.white,
+            ),
+        overflow: TextOverflow.ellipsis,
+      );
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: () {
+        if (!widget.loading && widget.onTap != null) {
+          widget.onTap!();
+        }
+      },
+      child: Container(
+        decoration: BoxDecoration(
+          color: widget.color ?? Colors.blue,
+          borderRadius: BorderRadius.all(Radius.circular(widget.radius)),
+        ),
+        child: TextButton(
+          onPressed: () {
+            if (!widget.loading && widget.onTap != null) {
+              widget.onTap!();
+            }
+          },
+          child: widget.loading
+              ? Row(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    widget.indicator ??
+                        CupertinoActivityIndicator(
+                          animating: widget.loading,
+                          color: widget.loadingColor ?? Colors.white,
+                        ),
+                    const SizedBox(width: 8),
+                    _titleWidget(),
+                  ],
+                )
+              : _titleWidget(),
+        ),
+      ),
+    );
+  }
+}
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/log.dart b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/log.dart
new file mode 100644
index 00000000..c96aa02b
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/log.dart
@@ -0,0 +1,43 @@
+import 'package:flutter/foundation.dart';
+import 'package:logger/logger.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/ext.dart';
+
+class Log {
+  static Function? cacheLogInfo;
+
+  static final Logger _logger = Logger(
+    printer: PrefixPrinter(PrettyPrinter()),
+  );
+
+  static void i(dynamic message, String? tag) {
+    if (kDebugMode) {
+      var info = "$tag ${nowHmsStrWithMark()}--> $message";
+      print(info);
+      cacheLogInfo?.call(info);
+    }
+  }
+
+  static void d(dynamic message, String? tag) {
+    if (kDebugMode) {
+      _logger.d("$tag --> $message", time: DateTime.now());
+    }
+  }
+
+  static void w(dynamic message, String? tag) {
+    if (kDebugMode) {
+      _logger.w("$tag --> $message", time: DateTime.now());
+    }
+  }
+
+  static void e(dynamic message, String? tag) {
+    if (kDebugMode) {
+      _logger.e("$tag --> $message", time: DateTime.now());
+    }
+  }
+
+  static void f(dynamic message, String? tag) {
+    if (kDebugMode) {
+      _logger.f("$tag --> $message", time: DateTime.now());
+    }
+  }
+}
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/main.dart b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/main.dart
new file mode 100644
index 00000000..5bad9ea3
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/main.dart
@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:get_storage/get_storage.dart';
+import 'package:mobile_im_sdk_flutter_tcp_example/test_login_page.dart';
+import 'package:oktoast/oktoast.dart';
+
+void main() async {
+  // 初始化持久化
+  await GetStorage.init();
+
+  runApp(const TestApp());
+}
+
+class TestApp extends StatelessWidget {
+  const TestApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return OKToast(
+      radius: 15,
+      textPadding:
+          const EdgeInsets.only(left: 15, right: 15, top: 6, bottom: 6),
+      position: ToastPosition.bottom,
+      backgroundColor: Colors.black.withOpacity(0.7),
+      child: GetMaterialApp(
+        title: 'Chat Demo',
+        theme: ThemeData(
+          primarySwatch: Colors.blue,
+        ),
+        debugShowCheckedModeBanner: true,
+        home: const TestLoginPage(),
+      ),
+    );
+  }
+}
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/test_home_page.dart b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/test_home_page.dart
new file mode 100644
index 00000000..016eb92f
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/test_home_page.dart
@@ -0,0 +1,335 @@
+import 'dart:io';
+import 'dart:math';
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:get_storage/get_storage.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_sender.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Ext.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:oktoast/oktoast.dart';
+
+import 'chat_controller.dart';
+import 'loading_button.dart';
+
+class TestHomeController extends GetxController {
+  final accountController = TextEditingController();
+  final msgController = TextEditingController();
+  bool loading = false;
+
+  final ChatController chatController = Get.find();
+
+  final storage = GetStorage();
+
+  @override
+  void onInit() {
+    super.onInit();
+    String name = storage.read("rec_name") ?? "";
+    String info = storage.read("msg") ?? "{消息[doge]} ";
+    accountController.text = name;
+    msgController.text = info;
+  }
+
+  void sendMsg() {
+    var info = msgController.text ?? "";
+    var name = accountController.text ?? "";
+    if (info.isEmpty || name.isEmpty) {
+      showToast("消息 和 用户名 不可为空");
+      return;
+    }
+
+    storage.write("rec_name", name);
+    storage.write("msg", info);
+
+    var finalMsg = nowHmsStrWithMark() + info;
+
+    chatController.msgList.add(finalMsg);
+
+    LocalDataSender.getInstance().sendCommonData(finalMsg, name);
+  }
+}
+
+class TestHomePage extends StatefulWidget {
+  const TestHomePage({super.key});
+
+  @override
+  State<TestHomePage> createState() => _TestHomePageState();
+}
+
+class _TestHomePageState extends State<TestHomePage>
+    with WidgetsBindingObserver, RouteAware {
+  bool _inCurrentPage = true;
+
+  /// 由子页面 返回时刷新
+  @override
+  void didPopNext() {
+    _inCurrentPage = true;
+    super.didPopNext();
+  }
+
+  /// 进入子页面
+  @override
+  void didPushNext() {
+    _inCurrentPage = false;
+    super.didPushNext();
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    Log.cacheLogInfo = (str) {
+      var finalStr = str.toString();
+      var flag = finalStr.contains("[error]") || finalStr.contains("[warning]");
+      var notMsg = !finalStr.contains("[msg]");
+      if (flag && notMsg) {
+        chatController.msgList.add(finalStr);
+      }
+    };
+
+    WidgetsBinding.instance.addObserver(this);
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    // App 的生命周期回调
+    switch (state) {
+      case AppLifecycleState.inactive:
+        print('app -> inactive');
+        break;
+      case AppLifecycleState.resumed:
+        print('app -> resumed 恢复');
+        // 连接
+        break;
+      case AppLifecycleState.paused:
+        print('app -> paused 挂起');
+        break;
+      case AppLifecycleState.detached:
+        print('app -> detached 已经退出(进程已杀死)');
+        // 关闭连接
+        break;
+    }
+  }
+
+  TestHomeController controller = Get.find();
+  ChatController chatController = Get.find();
+
+  ScrollController scrollController = ScrollController();
+
+  Color getBgColor() => Color.fromARGB(Random().nextInt(125),
+      Random().nextInt(255), Random().nextInt(255), Random().nextInt(255));
+
+  late Color bgColor = Colors.lime;
+
+  final autoScroll = false.obs;
+
+  @override
+  Widget build(BuildContext context) {
+    chatController.msgList.listen((p0) {
+      if (!autoScroll.value) return;
+
+      /// 延迟 300 毫秒，再进行滑动
+      Future.delayed(const Duration(milliseconds: 300), () {
+        scrollController.jumpTo(scrollController.position.maxScrollExtent);
+      });
+    });
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('主页'),
+      ),
+      body: SizedBox.expand(
+        child: Padding(
+          padding: const EdgeInsets.only(top: 20, left: 15, right: 15),
+          child: Column(
+            children: [
+              SingleChildScrollView(
+                  scrollDirection: Axis.horizontal,
+                  child: Row(
+                    children: [
+                      Obx(() => Text(
+                            "网络 ${chatController.linkState.value ? "连接" : "断开"}",
+                            style: TextStyle(
+                                fontSize: 8,
+                                color: chatController.linkState.value
+                                    ? Colors.green
+                                    : Colors.red),
+                          )),
+                      const SizedBox(width: 10),
+                      Obx(() => Text(
+                            "重连 ${chatController.reLinkState.value ? "连接" : "断开"}",
+                            style: TextStyle(
+                                fontSize: 8,
+                                color: chatController.reLinkState.value
+                                    ? Colors.green
+                                    : Colors.red),
+                          )),
+                      const SizedBox(width: 10),
+                      Obx(() => Text(
+                            "心跳 ${chatController.heartbeatState.value ? "连接" : "断开"}",
+                            style: TextStyle(
+                                fontSize: 8,
+                                color: chatController.heartbeatState.value
+                                    ? Colors.green
+                                    : Colors.red),
+                          )),
+                      const SizedBox(width: 10),
+                      Obx(() => Text(
+                            "QoS 发送 ${chatController.qosSendState.value ? "连接" : "断开"}",
+                            style: TextStyle(
+                                fontSize: 8,
+                                color: chatController.qosSendState.value
+                                    ? Colors.green
+                                    : Colors.red),
+                          )),
+                      const SizedBox(width: 10),
+                      Obx(() => Text(
+                            "QoS 接收 ${chatController.qosReceiveState.value ? "连接" : "断开"}",
+                            style: TextStyle(
+                                fontSize: 8,
+                                color: chatController.qosReceiveState.value
+                                    ? Colors.green
+                                    : Colors.red),
+                          )),
+                    ],
+                  )),
+              const SizedBox(height: 15),
+              Obx(() {
+                return Row(
+                  mainAxisSize: MainAxisSize.max,
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    const Text("自动滚动到底部"),
+                    const SizedBox(width: 5),
+                    CupertinoSwitch(
+                        value: autoScroll.value,
+                        onChanged: (v) {
+                          autoScroll.value = v;
+                        }),
+                  ],
+                );
+              }),
+              const SizedBox(height: 15),
+              CupertinoTextField(
+                placeholder: '请输入接收者...',
+                controller: controller.accountController,
+                clearButtonMode: OverlayVisibilityMode.editing,
+              ),
+              const SizedBox(height: 15),
+              CupertinoTextField(
+                placeholder: '请输入消息...',
+                controller: controller.msgController,
+                keyboardType: TextInputType.text,
+                clearButtonMode: OverlayVisibilityMode.editing,
+              ),
+              const SizedBox(height: 15),
+              Row(
+                mainAxisSize: MainAxisSize.max,
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Expanded(
+                    child: SizedBox(
+                      width: 100,
+                      height: 30,
+                      child: LoadingButton(
+                        title: '发送',
+                        loadingText: '发送中',
+                        titleStyle: const TextStyle(
+                          fontSize: 8,
+                          color: Colors.white,
+                        ),
+                        radius: 17.5,
+                        loading: controller.loading,
+                        onTap: () {
+                          controller.sendMsg();
+                        },
+                      ),
+                    ),
+                  ),
+                  const SizedBox(width: 50),
+                  Expanded(
+                    child: SizedBox(
+                      width: 100,
+                      height: 30,
+                      child: LoadingButton(
+                        title: '批量发送 ($_multiCount)',
+                        loadingText: '发送中',
+                        titleStyle: const TextStyle(
+                          fontSize: 8,
+                          color: Colors.white,
+                        ),
+                        radius: 17.5,
+                        loading: controller.loading,
+                        onTap: () {
+                          doMultiSend();
+                        },
+                      ),
+                    ),
+                  ),
+                  const SizedBox(width: 50),
+                  Expanded(
+                    child: SizedBox(
+                      height: 30,
+                      child: LoadingButton(
+                        title: '清屏',
+                        loadingText: '清屏中',
+                        titleStyle: const TextStyle(
+                          fontSize: 8,
+                          color: Colors.white,
+                        ),
+                        radius: 17.5,
+                        loading: controller.loading,
+                        onTap: () {
+                          chatController.msgList.clear();
+                        },
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+              const SizedBox(height: 15),
+              Obx(() => Text(
+                    chatController.newestReceiveMsg.value,
+                    style: const TextStyle(color: Colors.blue),
+                  )),
+              const SizedBox(height: 15),
+              Obx(() => Text("${chatController.msgList.length}")),
+              const SizedBox(height: 5),
+              Expanded(
+                  child: Obx(() => ListView.builder(
+                        controller: scrollController,
+                        itemCount: chatController.msgList.length,
+                        reverse: false,
+                        itemBuilder: (context, index) {
+                          return Container(
+                            color: bgColor,
+                            padding: const EdgeInsets.all(8.0),
+                            margin: const EdgeInsets.symmetric(
+                                horizontal: 3.0, vertical: 5),
+                            child: Text(
+                                "$index  ${chatController.msgList[index]}"),
+                          );
+                        },
+                      )))
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  doMultiSend() async {
+    for (int i = 0; i < _multiCount; i++) {
+      controller.sendMsg();
+      sleep(const Duration(milliseconds: 100));
+    }
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    chatController.logout();
+  }
+}
+
+const int _multiCount = 10;
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/test_login_page.dart b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/test_login_page.dart
new file mode 100644
index 00000000..2e992309
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/lib/test_login_page.dart
@@ -0,0 +1,109 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:get_storage/get_storage.dart';
+import 'package:oktoast/oktoast.dart';
+import 'chat_controller.dart';
+import 'loading_button.dart';
+import 'test_home_page.dart';
+
+class TestLoginController extends GetxController {
+  final ipController = TextEditingController();
+  final accountController = TextEditingController();
+  bool loading = false;
+  final storage = GetStorage();
+
+  @override
+  void onInit() {
+    super.onInit();
+    String ip = storage.read("ip") ?? "rbcore.52im.net";
+    String name = storage.read("name") ?? "f";
+    ipController.text = ip;
+    accountController.text = name;
+  }
+
+  final ChatController chatController = Get.find();
+
+  void doLogin() {
+    final ip = ipController.text ?? '';
+    final name = accountController.text ?? '';
+    if (ip.isEmpty || name.isEmpty) {
+      showToast("Ip 和 用户名 不可为空");
+      return;
+    }
+    storage.write("ip", ip);
+    storage.write("name", name);
+
+    chatController.doLogin(ip, 8901, name, name);
+  }
+}
+
+class TestLoginPage extends StatelessWidget {
+  const TestLoginPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    var chatController = Get.put(ChatController());
+    var homeController = Get.put(TestHomeController());
+    TestLoginController controller = Get.put(TestLoginController());
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('登陆'),
+      ),
+      body: Center(
+        child: Padding(
+          padding: const EdgeInsets.only(top: 100, left: 15, right: 15),
+          child: Column(
+            children: [
+              CupertinoTextField(
+                placeholder: '请输入ip...',
+                controller: controller.ipController,
+                clearButtonMode: OverlayVisibilityMode.editing,
+              ),
+              const SizedBox(height: 15),
+              CupertinoTextField(
+                placeholder: '请输入用户...',
+                controller: controller.accountController,
+                keyboardType: TextInputType.visiblePassword,
+                clearButtonMode: OverlayVisibilityMode.editing,
+              ),
+              const SizedBox(height: 15),
+              SizedBox(
+                width: 100,
+                height: 50,
+                child: LoadingButton(
+                  title: '登陆',
+                  loadingText: '登陆中',
+                  radius: 17.5,
+                  loading: controller.loading,
+                  onTap: () {
+                    // 登陆
+                    controller.doLogin();
+                  },
+                ),
+              ),
+              const SizedBox(height: 15),
+              const SizedBox(height: 5),
+              Expanded(
+                  child: Obx(() => ListView.builder(
+                        itemCount: chatController.msgList.length,
+                        reverse: false,
+                        itemBuilder: (context, index) {
+                          return Container(
+                            color: Colors.lightGreen,
+                            padding: const EdgeInsets.all(8.0),
+                            margin: const EdgeInsets.symmetric(
+                                horizontal: 3.0, vertical: 5),
+                            child: Text(
+                                "$index  ${chatController.msgList[index]}"),
+                          );
+                        },
+                      )))
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/pubspec.lock b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/pubspec.lock
new file mode 100644
index 00000000..8b5b84ec
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/pubspec.lock
@@ -0,0 +1,324 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.11.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.1"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.3.0"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.1.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "4a07be6cb69c84d677a6c3096fcf960cc3285a8330b4603e0d463d15d9bd934c"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.17.1"
+  cupertino_icons:
+    dependency: "direct main"
+    description:
+      name: cupertino_icons
+      sha256: e35129dc44c9118cee2a5603506d823bab99c68393879edb440e0090d07586be
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.0.5"
+  duffer:
+    dependency: transitive
+    description:
+      name: duffer
+      sha256: "482fa7e454d66ab1cc6616fdb0c076bb971f7eb54b0ce4ab6ad870ada928feb0"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.2.5"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.3.1"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: ed5337a5660c506388a9f012be0288fb38b49020ce2b45fe1f8b8323fe429f99
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.2"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_lints:
+    dependency: "direct dev"
+    description:
+      name: flutter_lints
+      sha256: "2118df84ef0c3ca93f96123a616ae8540879991b8b57af2f81b76a7ada49b2a4"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.2"
+  flutter_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  get:
+    dependency: "direct main"
+    description:
+      name: get
+      sha256: "2ba20a47c8f1f233bed775ba2dd0d3ac97b4cf32fc17731b3dfc672b06b0e92a"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.6.5"
+  get_storage:
+    dependency: "direct main"
+    description:
+      name: get_storage
+      sha256: "39db1fffe779d0c22b3a744376e86febe4ade43bf65e06eab5af707dc84185a2"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.1"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.6.7"
+  lints:
+    dependency: transitive
+    description:
+      name: lints
+      sha256: "0a217c6c989d21039f1498c3ed9f3ed71b354e69873f13a8dfc3c9fe76f1b452"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.1"
+  logger:
+    dependency: "direct main"
+    description:
+      name: logger
+      sha256: "66cb048220ca51cf9011da69fa581e4ee2bed4be6e82870d9e9baae75739da49"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.1"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: "6501fbd55da300384b768785b83e5ce66991266cec21af89ab9ae7f5ce1c4cbb"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.12.15"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      sha256: d92141dc6fe1dad30722f9aa826c7fbc896d021d792f80678280601aff8cf724
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.2.0"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.9.1"
+  mobile_im_sdk_flutter_tcp:
+    dependency: "direct main"
+    description:
+      path: "../../../sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open"
+      relative: true
+    source: path
+    version: "1.0.0+1"
+  oktoast:
+    dependency: "direct main"
+    description:
+      name: oktoast
+      sha256: fd5dd5c7dd02c41c56bdbdbc163351bd6cd59cba61c416daf255e35d1a86dce1
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.3.1"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.8.3"
+  path_provider:
+    dependency: transitive
+    description:
+      name: path_provider
+      sha256: "3087813781ab814e4157b172f1a11c46be20179fcc9bea043e0fba36bc0acaa2"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.15"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: "2cec049d282c7f13c594b4a73976b0b4f2d7a1838a6dd5aaf7bd9719196bee86"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.27"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "916731ccbdce44d545414dd9961f26ba5fbaa74bcbb55237d8e65a623a8c7297"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.4"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      sha256: ffbb8cc9ed2c9ec0e4b7a541e56fd79b138e8f47d2fb86815f15358a349b3b57
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.11"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      sha256: bced5679c7df11190e1ddc35f3222c858f328fff85c3942e46e7f5589bf9eb84
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.0"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      sha256: "1cb68ba4cd3a795033de62ba1b7b4564dace301f952de6bfb3cd91b202b6ee96"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.7"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      sha256: "4a451831508d7d6ca779f7ac6e212b4023dd5a7d08a27a63da33756410e32b76"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.0"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      sha256: "43798d895c929056255600343db8f049921cbec94d31ec87f1dc5c16c01935dd"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.5"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.99"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: dd904f795d4b4f3b870833847c461801f6750a9fa8e61ea5ac53f9422b31f250
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.9.1"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.11.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.1"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.2.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.2.1"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: eb6ac1540b26de412b3403a163d919ba86f6a973fe6cc50ae3541b80092fdcfb
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.5.1"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.4"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: f2add6fa510d3ae152903412227bda57d0d5a8da61d2c39c1fb022c9429a41c0
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "5.0.6"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      sha256: e0b1147eec179d3911f1f19b59206448f78195ca1d20514134e10641b7d7fbff
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.0.1"
+sdks:
+  dart: ">=3.0.5 <4.0.0"
+  flutter: ">=3.3.0"
diff --git a/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/pubspec.yaml b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/pubspec.yaml
new file mode 100644
index 00000000..44fc5357
--- /dev/null
+++ b/demo_src/TCP_Client/MobileIMSDK4fDemo_tcp/pubspec.yaml
@@ -0,0 +1,86 @@
+name: mobile_im_sdk_flutter_tcp_example
+description: mobile_im_sdk_flutter_tcp_example.
+# The following line prevents the package from being accidentally published to
+# pub.dev using `flutter pub publish`. This is preferred for private packages.
+publish_to: 'none' # Remove this line if you wish to publish to pub.dev
+
+# The following defines the version and build number for your application.
+# A version number is three numbers separated by dots, like 1.2.43
+# followed by an optional build number separated by a +.
+# Both the version and the builder number may be overridden in flutter
+# build by specifying --build-name and --build-number, respectively.
+# In Android, build-name is used as versionName while build-number used as versionCode.
+# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
+# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
+# Read more about iOS versioning at
+# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
+# In Windows, build-name is used as the major, minor, and patch parts
+# of the product and file versions while build-number is used as the build suffix.
+version: 1.0.0+1
+
+environment:
+  sdk: '>=3.0.5 <4.0.0'
+
+# Dependencies specify other packages that your package needs in order to work.
+# To automatically upgrade your package dependencies to the latest versions
+# consider running `flutter pub upgrade --major-versions`. Alternatively,
+# dependencies can be manually updated by changing the version numbers below to
+# the latest version available on pub.dev. To see which dependencies have newer
+# versions available, run `flutter pub outdated`.
+dependencies:
+  flutter:
+    sdk: flutter
+  mobile_im_sdk_flutter_tcp:
+    path: ../../../sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open
+  get: ^4.6.5
+  get_storage: ^2.1.1
+  oktoast: ^3.3.1
+  logger: ^2.0.1
+
+  # The following adds the Cupertino Icons font to your application.
+  # Use with the CupertinoIcons class for iOS style icons.
+  cupertino_icons: ^1.0.2
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+  # The "flutter_lints" package below contains a set of recommended lints to
+  # encourage good coding practices. The lint set provided by the package is
+  # activated in the `analysis_options.yaml` file located at the root of your
+  # package. See that file for information about deactivating specific lint
+  # rules and activating additional ones.
+  flutter_lints: ^2.0.0
+
+# For information on the generic Dart part of this file, see the
+# following page: https://dart.dev/tools/pub/pubspec
+
+# The following section is specific to Flutter packages.
+flutter:
+
+  # The following line ensures that the Material Icons font is
+  # included with your application, so that you can use the icons in
+  # the material Icons class.
+  uses-material-design: true
+
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.dev/assets-and-images/#resolution-aware
+
+  # For details regarding adding assets from package dependencies, see
+  # https://flutter.dev/assets-and-images/#from-packages
+
+  # To add custom fonts to your application, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts from package dependencies,
+  # see https://flutter.dev/custom-fonts/#from-packages
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/.gitignore b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/.gitignore
new file mode 100644
index 00000000..24476c5d
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/.gitignore
@@ -0,0 +1,44 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/analysis_options.yaml b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/analysis_options.yaml
new file mode 100644
index 00000000..61b6c4de
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/analysis_options.yaml
@@ -0,0 +1,29 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at
+  # https://dart-lang.github.io/linter/lints/index.html.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/client_core_sdk.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/client_core_sdk.dart
new file mode 100644
index 00000000..d8043ac3
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/client_core_sdk.dart
@@ -0,0 +1,129 @@
+import 'package:mobile_im_sdk_flutter_tcp/sdk/conf/config_entity.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/auto_relogin_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/keep_alive_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_receiver.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_socket_provider.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/qos_4_receive_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/qos_4_send_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/event/chat_base_event.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/event/chat_message_event.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/event/message_qoS_event.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/c/p_login_info.dart';
+
+class ClientCoreSDK {
+  static const String TAG = "ClientCoreSDK";
+  static bool autoReLogin = true;
+
+  static int getCurrentTimeStamp() {
+    return DateTime.now().millisecondsSinceEpoch;
+  }
+
+  //<editor-fold desc="单例">
+
+  factory ClientCoreSDK.getInstance() => _instance;
+
+  static late final ClientCoreSDK _instance = ClientCoreSDK._internal();
+
+  ClientCoreSDK._internal();
+
+  //</editor-fold>
+
+  bool _init = false;
+
+  bool _connectedToServer = true;
+  bool _loginHasInit = false;
+
+  ChatBaseEvent? _chatBaseEvent;
+  ChatMessageEvent? _chatMessageEvent;
+  MessageQoSEvent? _messageQoSEvent;
+
+  PLoginInfo? _currentLoginInfo;
+
+  void init({SenseMode senseMode = SenseMode.MODE_10S}) {
+    if (!_init) {
+      ConfigEntity.setSenseMode(senseMode);
+      AutoReLoginDaemon.getInstance();
+      KeepAliveDaemon.getInstance();
+      LocalDataReceiver.getInstance();
+      QoS4SendDaemon.getInstance();
+      QoS4ReceiveDaemon.getInstance();
+
+      _init = true;
+    }
+  }
+
+  void release() {
+    setConnectedToServer(false);
+
+    LocalSocketProvider.getInstance().closeLocalSocket();
+    AutoReLoginDaemon.getInstance().stop();
+    KeepAliveDaemon.getInstance().stop();
+
+    QoS4SendDaemon.getInstance().stop();
+    QoS4ReceiveDaemon.getInstance().stop();
+
+    QoS4SendDaemon.getInstance().clear();
+    QoS4ReceiveDaemon.getInstance().clear();
+
+    _init = false;
+    setLoginHasInit(false);
+    setCurrentLoginInfo(null);
+  }
+
+  void setCurrentLoginInfo(PLoginInfo? currentLoginInfo) {
+    _currentLoginInfo = currentLoginInfo;
+  }
+
+  PLoginInfo? getCurrentLoginInfo() {
+    return _currentLoginInfo;
+  }
+
+  void saveFirstLoginTime(int firstLoginTime) {
+    _currentLoginInfo?.setFirstLoginTime(firstLoginTime);
+  }
+
+  bool isLoginHasInit() {
+    return _loginHasInit;
+  }
+
+  ClientCoreSDK setLoginHasInit(bool loginHasInit) {
+    _loginHasInit = loginHasInit;
+    return this;
+  }
+
+  bool isConnectedToServer() {
+    return _connectedToServer;
+  }
+
+  void setConnectedToServer(bool connectedToServer) {
+    _connectedToServer = connectedToServer;
+  }
+
+  bool isInitialed() {
+    return _init;
+  }
+
+  void setChatBaseEvent(ChatBaseEvent chatBaseEvent) {
+    _chatBaseEvent = chatBaseEvent;
+  }
+
+  ChatBaseEvent? getChatBaseEvent() {
+    return _chatBaseEvent;
+  }
+
+  void setChatMessageEvent(ChatMessageEvent chatMessageEvent) {
+    _chatMessageEvent = chatMessageEvent;
+  }
+
+  ChatMessageEvent? getChatMessageEvent() {
+    return _chatMessageEvent;
+  }
+
+  void setMessageQoSEvent(MessageQoSEvent messageQoSEvent) {
+    _messageQoSEvent = messageQoSEvent;
+  }
+
+  MessageQoSEvent? getMessageQoSEvent() {
+    return _messageQoSEvent;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/conf/config_entity.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/conf/config_entity.dart
new file mode 100644
index 00000000..7312a843
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/conf/config_entity.dart
@@ -0,0 +1,102 @@
+// ignore_for_file: constant_identifier_names
+
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/keep_alive_daemon.dart';
+
+class ConfigEntity {
+  static String serverIP = "192.168.31.108"; //
+  static int serverPort = 8901;
+
+  static void setSenseMode(SenseMode mode) {
+    int keepAliveInterval = 0;
+    int networkConnectionTimeout = 0;
+    switch (mode) {
+      case SenseMode.MODE_3S:
+        {
+          keepAliveInterval = 3000; // 3s
+          networkConnectionTimeout = keepAliveInterval * 1 + 2000; // 5s
+          break;
+        }
+      case SenseMode.MODE_5S:
+        {
+          keepAliveInterval = 5000; // 3s
+          networkConnectionTimeout = keepAliveInterval * 1 + 3000; // 8s
+          break;
+        }
+      case SenseMode.MODE_10S:
+        keepAliveInterval = 10000; // 10s
+        networkConnectionTimeout = keepAliveInterval * 1 + 5000; // 15s
+        break;
+      case SenseMode.MODE_15S:
+        keepAliveInterval = 15000; // 15s
+        networkConnectionTimeout = keepAliveInterval * 1 + 5000; // 20s
+        break;
+      case SenseMode.MODE_30S:
+        keepAliveInterval = 30000; // 30s
+        networkConnectionTimeout = keepAliveInterval * 1 + 5000; // 35s
+        break;
+      case SenseMode.MODE_60S:
+        keepAliveInterval = 60000; // 60s
+        networkConnectionTimeout = keepAliveInterval * 1 + 5000; // 65s
+        break;
+      case SenseMode.MODE_120S:
+        keepAliveInterval = 120000; // 120s
+        networkConnectionTimeout = keepAliveInterval * 1 + 5000; // 125s
+        break;
+    }
+
+    if (keepAliveInterval > 0) {
+      KeepAliveDaemon.KEEP_ALIVE_INTERVAL = keepAliveInterval;
+    }
+    if (networkConnectionTimeout > 0) {
+      KeepAliveDaemon.NETWORK_CONNECTION_TIME_OUT = networkConnectionTimeout;
+    }
+  }
+}
+
+/// 即时通讯核心框架预设的敏感度模式.
+///
+/// <p>
+/// 对于客户端而言，此模式决定了用户与服务端网络会话的健康模式，原则上越敏感客户端的体验越好。
+///
+/// <p>
+/// <b>重要说明：</b><u>客户端本模式的设定必须要与服务端的模式设制保持一致</u>，否则可能因参数的不一致而导致
+/// IM算法的不匹配，进而出现不可预知的问题。
+///
+enum SenseMode {
+  /// 此模式下：<br>
+  /// * KeepAlive心跳问隔为3秒；<br>
+  /// * 5秒后未收到服务端心跳反馈即认为连接已断开（相当于连续2个心跳间隔(即算法最大6秒延迟后)后仍未收到服务端反馈）。
+  MODE_3S,
+
+  /// 此模式下：<br>
+  /// * KeepAlive心跳问隔为5秒；<br>
+  /// * 8秒后未收到服务端心跳反馈即认为连接已断开（相当于连续1个心跳间隔+3秒链路延迟容忍时间后仍未收到服务端反馈）。
+  MODE_5S,
+
+  /// 此模式下：<br>
+  /// * KeepAlive心跳问隔为10秒；<br>
+  /// * 15秒后未收到服务端心跳反馈即认为连接已断开（相当于连续2个心跳间隔(即算法最大20秒延迟后)后仍未收到服务端反馈）。
+  MODE_10S,
+
+  /// 此模式下：<br>
+  /// * KeepAlive心跳问隔为15秒；<br>
+  /// * 20秒后未收到服务端心跳反馈即认为连接已断开（相当于连续2个心跳间隔(即算法最大30秒延迟后)后仍未收到服务端反馈）。
+  ///
+  /// @since 5.0
+  MODE_15S,
+
+  /// 此模式下：<br>
+  /// * KeepAlive心跳问隔为30秒；<br>
+  /// * 35秒后未收到服务端心跳反馈即认为连接已断开（相当于连续2个心跳间隔(即算法最大60秒延迟后)后仍未收到服务端反馈）。
+  MODE_30S,
+
+  /// 此模式下：<br>
+  /// * KeepAlive心跳问隔为60秒；<br>
+  /// * 65秒后未收到服务端心跳反馈即认为连接已断开（相当于连续2个心跳间隔(即算法最大120秒延迟后)后仍未收到服务端反馈）。
+  MODE_60S,
+
+  /// 此模式下：<br>
+  /// * KeepAlive心跳问隔为120秒；<br>
+  /// * 125秒后未收到服务端心跳反馈即认为连接已断开（相当于连续2个心跳间隔(即算法最大240秒延迟后)后仍未收到服务端反馈）。
+  MODE_120S
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/auto_relogin_daemon.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/auto_relogin_daemon.dart
new file mode 100644
index 00000000..0bbbfff2
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/auto_relogin_daemon.dart
@@ -0,0 +1,118 @@
+// ignore_for_file: constant_identifier_names
+
+import 'dart:async';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_sender.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+
+class AutoReLoginDaemon {
+  static const String _tag = "AutoReLoginDaemon";
+  static const int AUTO_RE$LOGIN_INTERVAL = 3000;
+
+  //<editor-fold desc="单例">
+
+  factory AutoReLoginDaemon.getInstance() => _instance;
+
+  static late final AutoReLoginDaemon _instance = AutoReLoginDaemon._internal();
+
+  AutoReLoginDaemon._internal() {
+    init();
+  }
+
+  //</editor-fold>
+
+  bool _autoReLoginRunning = false;
+  bool _init = false;
+  bool _executing = false;
+  late void Function() _callback;
+  Timer? _timer;
+
+  void init() {
+    if (_init) return;
+
+    _callback = () async {
+      if (!_executing) {
+        final int code = await _doSendLogin();
+        _onSendLogin(code);
+      }
+    };
+
+    _init = true;
+  }
+
+  Future<int> _doSendLogin() async {
+    // todo 重连有时会进行两次？ 第一次会被关掉， 倒是也可正常使用，但是怕高并发时会白白多一倍的连接数
+    //[INFO] - [15:37:48.748][IMCORE-tcp]与{uid:null}/10.10.2.61:55978的会话建立(channelActive)了... | (ServerCoreHandler^sessionCreated:396)
+    // [DEBUG] - [15:37:48.754]-Dio.netty.recycler.maxCapacityPerThread: 4096 | (Recycler^<clinit>:100)
+    // [DEBUG] - [15:37:48.754]-Dio.netty.recycler.maxSharedCapacityFactor: 2 | (Recycler^<clinit>:101)
+    // [DEBUG] - [15:37:48.754]-Dio.netty.recycler.linkCapacity: 16 | (Recycler^<clinit>:102)
+    // [DEBUG] - [15:37:48.755]-Dio.netty.recycler.ratio: 8 | (Recycler^<clinit>:103)
+    // [DEBUG] - [15:37:48.755]-Dio.netty.recycler.delayedQueue.ratio: 8 | (Recycler^<clinit>:104)
+    // [INFO] - [15:37:48.771][IMCORE-tcp]与{uid:null}/10.10.2.61:55976的会话建立(channelActive)了... | (ServerCoreHandler^sessionCreated:396)
+    // [INFO] - [15:37:48.791][IMCORE-tcp]>> 客户端{uid:null}/10.10.2.61:55978发过来的登陆信息内容是：uid=b、token=b、firstLoginTime=1690443347718 | (LogicProcessor^processLogin:161)
+    // [DEBUG] - [15:37:48.792]【DEBUG_回调通知】正在调用回调方法：OnVerifyUserCallBack...(extra=null) | (ServerEventListenerImpl^onUserLoginVerify:60)
+    // [DEBUG] - [15:37:48.801]【@】当前在线用户共(1)人-------------------> | (OnlineProcessor^__printOnline:212)
+    // [DEBUG] - [15:37:48.801]【IM_回调通知onUserLoginSucess】用户：b 上线了！ | (ServerEventListenerImpl^onUserLoginSucess:78)
+    // [WARN] - [15:37:53.822][IMCORE-tcp]>> 客户端{uid:null}/10.10.2.61:55976尚未登陆，{}处理未继续. | (LocalSendHelper^replyDataForUnlogined:368)
+    // [WARN] - [15:37:53.824][IMCORE-tcp]>> 客户端{uid:null}/10.10.2.61:55976未登陆，服务端反馈发送成功？true（会话即将关闭） | (LocalSendHelper$2^update:379)
+    // [WARN] - [15:37:53.825][IMCORE-unknow]【注意】会话{uid:null}/10.10.2.61:55976被系统close了，但它里面没有存放user_id，它 很可能是没有成功合法认证而被提前关闭，从而正常释放资源。 | (ServerCoreHandler^sessionClosed:378)
+    // [INFO] - [15:37:59.815][IMCORE-tcp]客户端{uid:b}/10.10.2.61:55978的会话已超时失效，很可能是对方非正常通出或网络故障，即 将以会话异常的方式执行关闭流程 ... | (MBTCPClientInboundHandler^exceptionCaught:58)
+    // [DEBUG] - [15:37:59.815][IMCORE-tcp]此客户端的Channel抛出了exceptionCaught，原因是：null，可以提前close掉了哦！ | (ServerCoreHandler^exceptionCaught:154)
+    // io.netty.handler.timeout.ReadTimeoutException: null
+    // [INFO] - [15:37:59.816][IMCORE-unknow]{uid:b}/10.10.2.61:55978的会话已关闭(user_id=b, firstLoginTime=1690443347718)了... | (ServerCoreHandler^sessionClosed:321)
+    // [INFO] - [15:37:59.816].......... 【0】[当前正在被关闭的session] session.hashCode=79431750, session.ip+port=/10.10.2.61:55978 | (ServerCoreHandler^sessionClosed:327)
+    // [INFO] - [15:37:59.817].......... 【1】[处于在线列表中的session] session.hashCode=79431750, session.ip+port= | (ServerCoreHandler^sessionClosed:332)
+    // [DEBUG] - [15:37:59.817]【DEBUG_回调通知onUserLogout】用户：b 离线了（beKickoutCode=-1）！ | (ServerEventListenerImpl^onUserLogout:94)
+    // [INFO] - [15:37:59.892][IMCORE-tcp]与{uid:null}/10.10.2.61:55980的会话建立(channelActive)了... | (ServerCoreHandler^sessionCreated:396)
+    // [INFO] - [15:37:59.896][IMCORE-tcp]>> 客户端{uid:null}/10.10.2.61:55980发过来的登陆信息内容是：uid=b、token=b、firstLoginTime=1690443347718 | (LogicProcessor^processLogin:161)
+    // [DEBUG] - [15:37:59.897]【DEBUG_回调通知】正在调用回调方法：OnVerifyUserCallBack...(extra=null) | (ServerEventListenerImpl^onUserLoginVerify:60)
+    // [DEBUG] - [15:37:59.898]【@】当前在线用户共(1)人-------------------> | (OnlineProcessor^__printOnline:212)
+    // [DEBUG] - [15:37:59.898]【IM_回调通知onUserLoginSucess】用户：b 上线了！ | (ServerEventListenerImpl^onUserLoginSucess:78)
+    _executing = true;
+    Log.info(
+        "$_tag【IMCORE-TCP】自动重新登陆线程执行中, autoReLogin=${ClientCoreSDK.autoReLogin} ...",
+        _tag);
+    int code = -1;
+    if (ClientCoreSDK.autoReLogin) {
+      code = LocalDataSender.getInstance()
+          .sendLogin(ClientCoreSDK.getInstance().getCurrentLoginInfo()!);
+    }
+    return code;
+  }
+
+  void _onSendLogin(int result) {
+    if (result == 0) {
+      _executing = false;
+    }
+  }
+
+  void stop() {
+    _timer?.cancel();
+    _autoReLoginRunning = false;
+    _executing = false;
+  }
+
+  void start(bool immediately) {
+    stop();
+
+    int time = immediately ? 0 : AUTO_RE$LOGIN_INTERVAL;
+
+    _timer = Timer(Duration(milliseconds: time), () {
+      _timer = Timer.periodic(
+          const Duration(milliseconds: AUTO_RE$LOGIN_INTERVAL), (timer) {
+        if (_autoReLoginRunning) _callback();
+      });
+    });
+
+    Log.info("自动重登启动", _tag);
+    _autoReLoginRunning = true;
+  }
+
+  bool isAutoReLoginRunning() {
+    return _autoReLoginRunning;
+  }
+
+  bool isInit() {
+    return _init;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/keep_alive_daemon.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/keep_alive_daemon.dart
new file mode 100644
index 00000000..cc198f28
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/keep_alive_daemon.dart
@@ -0,0 +1,184 @@
+// ignore_for_file: non_constant_identifier_names
+
+import 'dart:async';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_sender.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Handler.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/mb_observer.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/mb_simple_timer.dart';
+
+class KeepAliveDaemon {
+  static const String _tag = "KeepAliveDaemon";
+
+  /// Keep Alive 心跳发送时间间隔（单位：毫秒），默认15000毫秒（即15秒）
+  ///
+  /// 心跳间隔越短则保持会话活性的健康度更佳，但将使得在大量客户端连接情况下服务端因此而增加负载，
+  /// 且手机将消耗更多电量和流量，所以此间隔需要权衡（建议为：大于3秒 且 小于270秒(即4分半钟) ）！
+  ///
+  /// 说明：此参数用于设定客户端发送到服务端的心跳间隔，心跳包的作用是用来保持与服务端的会话活性
+  /// （更准确的说是为了避免客户端因路由器的NAT算法而导致路由器端口老化，相关知识见此文：http://www.52im.net/thread-281-1-1.html）.
+  /// 参定此参数的同时，也需要相应设置服务端的ServerLauncher.SESION_RECYCLER_EXPIRE参数。
+  ///
+  static int KEEP_ALIVE_INTERVAL = 15 * 1000;
+
+  /// 收到服务端响应心跳包的超时间时间（单位：毫秒），默认（15 * 1000 + 5000）＝ 20000 毫秒（即20秒）
+  ///
+  /// 超过这个时间客户端将判定与服务端的网络连接已断开（此间隔建议为(KEEP_ALIVE_INTERVAL * 1) + 5 秒），
+  /// 没有上限，但不可太长，否则将不能即时反映出与服务器端的连接断开（比如掉掉线时），请从 能忍受的反应时长和即时性上做出权衡。
+  ///
+  /// 本参数除与 [KEEP_ALIVE_INTERVAL] 有关联外，不受其它设置影响。
+  ///
+  static int NETWORK_CONNECTION_TIME_OUT = KEEP_ALIVE_INTERVAL + 5000;
+
+  /// 心跳包超时检查定时器的运行间隔时间（单位：毫秒），默认（2 * 1000）＝ 2000 毫秒（即2秒）
+  ///
+  /// 此时间将决定断网感应灵敏度。建议设置值的范围为1~5秒内。
+  ///
+  static int NETWORK_CONNECTION_TIME_OUT_CHECK_INTERVAL = 2 * 1000;
+
+  bool _keepAliveRunning = false;
+  int _lastGetKeepAliveResponseFromServerTimestamp = 0;
+  MBObserver? _networkConnectionLostObserver;
+
+  Timer? _keepAliveHandler;
+  late Runnable _keepAliveRunnable;
+
+  bool _keepAliveTaskExecuting = false;
+  bool _keepAliveWillStop = false;
+
+  late MBSimpleTimer _keepAliveTimeoutTimer;
+
+  bool _init = false;
+
+  //<editor-fold desc="单例">
+
+  factory KeepAliveDaemon.getInstance() => _instance;
+
+  static late final KeepAliveDaemon _instance = KeepAliveDaemon._internal();
+
+  KeepAliveDaemon._internal() {
+    _initFunc();
+  }
+
+  //</editor-fold>
+
+  void _initFunc() {
+    if (_init) return;
+
+    _keepAliveRunnable = () async {
+      if (!_keepAliveTaskExecuting) {
+        final int code = _doKeepAlive();
+        _onKeepAlive(code);
+      }
+    };
+
+    _keepAliveTimeoutTimer =
+        MBSimpleTimer(NETWORK_CONNECTION_TIME_OUT_CHECK_INTERVAL, () {
+      Log.info("【IMCORE-TCP】心跳[超时检查]线程执行中... $hashCode ", _tag);
+      _doTimeoutCheck();
+    });
+
+    _init = true;
+  }
+
+  int _doKeepAlive() {
+    _keepAliveTaskExecuting = true;
+    Log.info("【IMCORE-TCP】心跳包[发送]线程执行中...", _tag);
+    int code = LocalDataSender.getInstance().sendKeepAlive();
+
+    return code;
+  }
+
+  void _onKeepAlive(int code) {
+    bool isInitialedForKeepAlive = _isInitialedForKeepAlive();
+    if (isInitialedForKeepAlive) {
+      updateGetKeepAliveResponseFromServerTimestamp();
+    }
+
+    _keepAliveTaskExecuting = false;
+    if (!_keepAliveWillStop) {
+      _keepAliveHandler =
+          Timer(Duration(milliseconds: KEEP_ALIVE_INTERVAL), () {
+        _keepAliveRunnable.call();
+      });
+    }
+  }
+
+  void _doTimeoutCheck() {
+    bool isInitialedForKeepAlive = _isInitialedForKeepAlive();
+    if (!isInitialedForKeepAlive) {
+      int now = ClientCoreSDK.getCurrentTimeStamp();
+      if (now - _lastGetKeepAliveResponseFromServerTimestamp >=
+          NETWORK_CONNECTION_TIME_OUT) {
+        Log.info("【IMCORE-TCP】心跳机制已判定网络断开，将进入断网通知和重连处理逻辑 ...", _tag);
+        notifyConnectionLost();
+        _keepAliveWillStop = true;
+      }
+    }
+  }
+
+  bool _isInitialedForKeepAlive() {
+    return _lastGetKeepAliveResponseFromServerTimestamp == 0;
+  }
+
+  /// 心跳线程算法已判定需要与服务器的“通信通道”断开，调用此方法将进入框架的“通信通道”断开处理逻辑
+  /// 本方法，目前属于 MobileIMSDK 框架算法的一部分，暂时无需也不建议由应用层开发者自行调用。
+  void notifyConnectionLost() {
+    stop();
+    _networkConnectionLostObserver?.update(true, null);
+  }
+
+  /// 是否正在运行中
+  bool isKeepAliveRunning() {
+    return _keepAliveRunning;
+  }
+
+  /// 本类对象是否已补初始化过
+  bool isInit() {
+    return _init;
+  }
+
+  /// 收到服务端反馈的心跳包时调用此方法：作用是更新服务端最背后的响应时间戳
+  /// 本方法的调用，目前属于 MobileIMSDK 算法的一部分，暂时无需也不建议由应用层自行调用。
+  void updateGetKeepAliveResponseFromServerTimestamp() {
+    _lastGetKeepAliveResponseFromServerTimestamp =
+        ClientCoreSDK.getCurrentTimeStamp();
+  }
+
+  /// 设置网络断开事件观察者
+  /// 本方法的调用，目前属于 MobileIMSDK 算法的一部分，暂时无需也不建议由应用层自行调用。
+  void setNetworkConnectionLostObserver(
+      MBObserver networkConnectionLostObserver) {
+    _networkConnectionLostObserver = networkConnectionLostObserver;
+  }
+
+  ///会尝试首先调用 stop()方法，以便确保实例被启动前是真正处 于停止状态，这也意味着可无害调用本方法。
+  ///
+  /// 目前属于MobileIMSDK算法的一部分，暂时无需也不建议由应用层自行调用。
+  ///
+  /// 参数:
+  /// [immediately] - true 表示立即执行线程作业，否则直到 [KEEP_ALIVE_INTERVAL] 执行间隔的到来才 进行首次作业的执行。
+  ///
+  void start(bool immediately) {
+    stop();
+    var time = immediately ? 0 : KEEP_ALIVE_INTERVAL;
+    _keepAliveHandler = Timer(Duration(milliseconds: time), () {
+      _keepAliveRunnable.call();
+    });
+    _keepAliveRunning = true;
+    _keepAliveWillStop = false;
+    Log.info("【IMCORE-TCP】心跳 start()  time:$time ... ", _tag);
+    _keepAliveTimeoutTimer.start(immediately);
+  }
+
+  /// 无条件停止本实例，目前属于MobileIMSDK算法的一部分，暂时无需也不建议由应用层自行调用。
+  void stop() {
+    _keepAliveTimeoutTimer.stop();
+
+    _keepAliveHandler?.cancel();
+    _keepAliveRunning = false;
+    _keepAliveWillStop = false;
+    _lastGetKeepAliveResponseFromServerTimestamp = 0;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_data_receiver.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_data_receiver.dart
new file mode 100644
index 00000000..478a171c
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_data_receiver.dart
@@ -0,0 +1,252 @@
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/auto_relogin_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/keep_alive_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_sender.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_socket_provider.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/qos_4_receive_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/qos_4_send_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/mb_observer.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/error_code.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol_i_type.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol_factory.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_error_response.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_kickout_info.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_login_info_response.dart';
+
+class LocalDataReceiver {
+  final String _tag = "LocalDataReceiver";
+
+  //<editor-fold desc="单例">
+
+  factory LocalDataReceiver.getInstance() => _instance;
+
+  static late final LocalDataReceiver _instance = LocalDataReceiver._internal();
+
+  LocalDataReceiver._internal() {
+    _init();
+  }
+
+  //</editor-fold>
+
+  void _init() {}
+
+  void handleProtocolJson(String fullProtocolOfBodyJson) {
+    _handleProtocolImpl(fullProtocolOfBodyJson);
+  }
+
+  void _handleProtocolImpl(String? fullProtocolOfBodyJson) {
+    if (fullProtocolOfBodyJson == null || fullProtocolOfBodyJson.isEmpty) {
+      Log.info("【IMCORE-TCP】无效的 fullProtocolOfBodyJson（.length == 0）！", _tag);
+      return;
+    }
+
+    final Protocol pFromServer;
+    try {
+      pFromServer = ProtocolFactory.parseFromString(fullProtocolOfBodyJson);
+
+      if (pFromServer.isQoS()) {
+        Log.info("pb预处理：$pFromServer", _tag);
+        if (pFromServer.getType() ==
+                ProtocolTypeS.FROM_SERVER_TYPE_OF_RESPONSE$LOGIN &&
+            ProtocolFactory.parsePLoginInfoResponse(
+                        pFromServer.getDataContent())
+                    .getCode() !=
+                0) {
+          Log.info("IMCORE-TCP】这是服务端的登陆返回响应包，且服务端判定登陆失败(即code!=0)，本次无需发送ACK应答包！",
+              _tag);
+        } else {
+          if (QoS4ReceiveDaemon.getInstance()
+              .hasReceived(pFromServer.getFp())) {
+            Log.info(
+                "【IMCORE-TCP】【QoS机制】${pFromServer.getFp()} 已经存在于发送列表中，这是重复包，通知应用层收到该包！",
+                _tag);
+            QoS4ReceiveDaemon.getInstance().addReceived(pFromServer);
+            _sendReceivedBack(pFromServer);
+            return;
+          }
+
+          QoS4ReceiveDaemon.getInstance().addReceived(pFromServer);
+          _sendReceivedBack(pFromServer);
+        }
+      }
+    } catch (e) {
+      Log.error("pb预处理错误：${e.toString()}", _tag);
+      return;
+    }
+
+    try {
+      switch (pFromServer.getType()) {
+        case ProtocolTypeC.FROM_CLIENT_TYPE_OF_COMMON$DATA:
+          {
+            _onReceivedCommonData(pFromServer);
+            break;
+          }
+        case ProtocolTypeS.FROM_SERVER_TYPE_OF_RESPONSE$KEEP$ALIVE:
+          {
+            _onServerResponseKeepAlive();
+            break;
+          }
+        case ProtocolTypeC.FROM_CLIENT_TYPE_OF_RECEIVED:
+          {
+            _onMessageRecievedACK(pFromServer);
+            break;
+          }
+        case ProtocolTypeS.FROM_SERVER_TYPE_OF_RESPONSE$LOGIN:
+          {
+            _onServerResponseLogin(pFromServer);
+            break;
+          }
+        case ProtocolTypeS.FROM_SERVER_TYPE_OF_RESPONSE$FOR$ERROR:
+          {
+            _onServerResponseError(pFromServer);
+            break;
+          }
+        case ProtocolTypeS.FROM_SERVER_TYPE_OF_KICKOUT:
+          {
+            _onKickOut(pFromServer);
+            break;
+          }
+        default:
+          Log.info(
+              "【IMCORE-TCP】收到的服务端消息类型：${pFromServer.getType()}，但目前该类型客户端不支持解析和处理！",
+              _tag);
+          break;
+      }
+    } catch (e) {
+      Log.info(
+          "【IMCORE-TCP】处理消息的过程中发生了错误. ${e.toString()},${pFromServer.toJson()}",
+          _tag);
+    }
+  }
+
+  void _onReceivedCommonData(Protocol pFromServer) {
+    Log.info(
+        ">>>>>>>>>>>>>>>>>>>>>>>>>>>>收到${pFromServer.getFrom()}发过来的消息：${pFromServer.getDataContent()},${pFromServer.getTo()}",
+        _tag);
+
+    ClientCoreSDK.getInstance().getChatMessageEvent()?.onReceiveMessage(
+        pFromServer.getFp(),
+        pFromServer.getFrom(),
+        pFromServer.getDataContent(),
+        pFromServer.getTypeu());
+  }
+
+  void _onServerResponseKeepAlive() {
+    Log.info("【IMCORE-TCP】收到服务端回过来的Keep Alive心跳响应包.", _tag);
+    KeepAliveDaemon.getInstance()
+        .updateGetKeepAliveResponseFromServerTimestamp();
+  }
+
+  void _onMessageRecievedACK(Protocol pFromServer) {
+    String theFingerPrint = pFromServer.getDataContent();
+
+    Log.info(
+        "【IMCORE-TCP】【QoS】收到 ${pFromServer.getFrom()}发过来的指纹为$theFingerPrint的应答包.",
+        _tag);
+
+    ClientCoreSDK.getInstance()
+        .getMessageQoSEvent()
+        ?.messagesBeReceived(theFingerPrint);
+
+    QoS4SendDaemon.getInstance().removeByFp(theFingerPrint);
+  }
+
+  void _onServerResponseLogin(Protocol pFromServer) {
+    PLoginInfoResponse loginInfoRes =
+        ProtocolFactory.parsePLoginInfoResponse(pFromServer.getDataContent());
+    if (loginInfoRes.getCode() == 0) {
+      if (!ClientCoreSDK.getInstance().isLoginHasInit()) {
+        ClientCoreSDK.getInstance()
+            .saveFirstLoginTime(loginInfoRes.getFirstLoginTime());
+      }
+      _fireConnectedToServer();
+    } else {
+      Log.info("【IMCORE-TCP】登陆验证失败，错误码=${loginInfoRes.getCode()}！", _tag);
+      LocalSocketProvider.getInstance().closeLocalSocket();
+      ClientCoreSDK.getInstance().setConnectedToServer(false);
+    }
+
+    ClientCoreSDK.getInstance()
+        .getChatBaseEvent()
+        ?.onLoginResponse(loginInfoRes.getCode());
+  }
+
+  void _onServerResponseError(Protocol pFromServer) {
+    PErrorResponse errorRes =
+        ProtocolFactory.parsePErrorResponse(pFromServer.getDataContent());
+    if (errorRes.getErrorCode() == ErrorCodeForS.RESPONSE_FOR_UN_LOGIN) {
+      ClientCoreSDK.getInstance().setLoginHasInit(false);
+
+      Log.info("【IMCORE-TCP】收到服务端的“尚未登陆”的错误消息，心跳线程将停止，请应用层重新登陆.", _tag);
+      KeepAliveDaemon.getInstance().stop();
+      AutoReLoginDaemon.getInstance().start(false);
+    }
+
+    ClientCoreSDK.getInstance()
+        .getChatMessageEvent()
+        ?.onErrorResponse(errorRes.getErrorCode(), errorRes.getErrorMsg());
+  }
+
+  void _onKickOut(Protocol pFromServer) {
+    Log.info("【IMCORE-TCP】收到服务端发过来的“被踢”指令.", _tag);
+
+    ClientCoreSDK.getInstance().release();
+
+    PKickoutInfo kickOutInfo =
+        ProtocolFactory.parsePKickoutInfo(pFromServer.getDataContent());
+    ClientCoreSDK.getInstance().getChatBaseEvent()?.onKickOut(kickOutInfo);
+
+    ClientCoreSDK.getInstance().getChatBaseEvent()?.onLinkClose(-1);
+  }
+
+  void _fireConnectedToServer() {
+    Log.info("【IMCORE-TCP】 取得和服务器的连接.", _tag);
+
+    ClientCoreSDK.getInstance().setLoginHasInit(true);
+    AutoReLoginDaemon.getInstance().stop();
+
+    KeepAliveDaemon.getInstance()
+        .setNetworkConnectionLostObserver(MBObserver((success, extraObj) {
+      _fireDisconnectedToServer();
+    }));
+
+    KeepAliveDaemon.getInstance().start(false);
+
+    QoS4SendDaemon.getInstance().startup(true);
+    QoS4ReceiveDaemon.getInstance().startup(true);
+    ClientCoreSDK.getInstance().setConnectedToServer(true);
+  }
+
+  void _fireDisconnectedToServer() {
+    Log.info("【IMCORE-TCP】 失去和服务器的连接.", _tag);
+
+    ClientCoreSDK.getInstance().setConnectedToServer(false);
+    LocalSocketProvider.getInstance().closeLocalSocket();
+
+    QoS4SendDaemon.getInstance().stop();
+    QoS4ReceiveDaemon.getInstance().stop();
+
+    // 建议：此参数可由true改为false，防止服务端重启等情况下，客户端立即重连等
+    AutoReLoginDaemon.getInstance().start(true);
+
+    ClientCoreSDK.getInstance().getChatBaseEvent()?.onLinkClose(-1);
+  }
+
+  void _sendReceivedBack(final Protocol pFromServer) async {
+    if (pFromServer.getFp() != null) {
+      var pb = ProtocolFactory.createRecivedBack(
+          pFromServer.getTo(), pFromServer.getFrom(), pFromServer.getFp(),
+          bridge: pFromServer.isBridge());
+      var i = LocalDataSender.getInstance().sendCommonDataObj(pb);
+      Log.info(
+          "【IMCORE-TCP】【QoS】向 ${pFromServer.getFrom()} 发送 ${pFromServer.getFp()} 包的应答包成功,from= ${pFromServer.getTo()}, resultCode = $i!",
+          _tag);
+    } else {
+      Log.info(
+          "【IMCORE-TCP】【QoS】收到 ${pFromServer.getFrom()} 发过来需要QoS的包，但它的指纹码却为null！无法发应答包！",
+          _tag);
+    }
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_data_sender.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_data_sender.dart
new file mode 100644
index 00000000..2959f86d
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_data_sender.dart
@@ -0,0 +1,134 @@
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/qos_4_send_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Ext.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/mb_observer.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/c/p_login_info.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/error_code.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/Protocol_factory.dart';
+import 'local_socket_provider.dart';
+
+class LocalDataSender {
+  final String _tag = "LocalDataSender";
+
+  //<editor-fold desc="单例">
+
+  factory LocalDataSender.getInstance() => _instance;
+
+  static late final LocalDataSender _instance = LocalDataSender._internal();
+
+  LocalDataSender._internal();
+
+  //</editor-fold>
+
+  int sendLogout() {
+    int code = 0;
+    if (ClientCoreSDK.getInstance().isLoginHasInit()) {
+      final loginInfo = ClientCoreSDK.getInstance().getCurrentLoginInfo()!;
+      code = _send(ProtocolFactory.createPLogoutInfo(loginInfo));
+    }
+
+    if (code == 0) {
+      ClientCoreSDK.getInstance().setLoginHasInit(false);
+      ClientCoreSDK.getInstance().setCurrentLoginInfo(null);
+      ClientCoreSDK.getInstance().setConnectedToServer(false);
+    }
+
+    return code;
+  }
+
+  int sendLogin(PLoginInfo loginInfo) {
+    int codeForCheck = _checkBeforeSend();
+    if (codeForCheck != ErrorCode.COMMON_CODE_OK) return codeForCheck;
+
+    if (!LocalSocketProvider.getInstance().isLocalSocketReady()) {
+      Log.info(
+          "【IMCORE-TCP】发送登陆指令时，socket连接未就绪，首先开始尝试发起连接（登陆指令将在连接成功后的回调中自动发出）。。。。",
+          _tag);
+
+      MBObserver connectionDoneObserver = MBObserver((success, extraObj) {
+        Log.info("【IMCORE-TCP】[来自 Tcp 的连接结果回调观察者通知]socket连接：$success ,$extraObj",
+            _tag);
+        if (success) {
+          _sendLoginImpl(loginInfo);
+        }
+      });
+
+      LocalSocketProvider.getInstance()
+          .setConnectionDoneObserver(connectionDoneObserver);
+
+      return LocalSocketProvider.getInstance().resetLocalSocket() != null
+          ? ErrorCode.COMMON_CODE_OK
+          : ErrorCodeForC.BAD_CONNECT_TO_SERVER;
+    } else {
+      return _sendLoginImpl(loginInfo);
+    }
+  }
+
+  int _sendLoginImpl(PLoginInfo loginInfo) {
+    int code = _send(ProtocolFactory.createPLoginInfo(loginInfo));
+    if (code == 0) {
+      ClientCoreSDK.getInstance().setCurrentLoginInfo(loginInfo);
+    }
+    return code;
+  }
+
+  int sendKeepAlive() {
+    return _send(ProtocolFactory.createPKeepAlive(
+        ClientCoreSDK.getInstance().getCurrentLoginInfo()!.getLoginUserId()));
+  }
+
+  int sendCommonData(String dataContentWidthStr, String to_user_id,
+      {int typeu = -1, String? fingerPrint, bool QoS = true}) {
+    return sendCommonDataObj(ProtocolFactory.createCommonData(
+        dataContentWidthStr,
+        ClientCoreSDK.getInstance().getCurrentLoginInfo()!.getLoginUserId(),
+        to_user_id,
+        QoS,
+        fingerPrint: fingerPrint,
+        typeu: typeu));
+  }
+
+  int sendCommonDataObj(Protocol? p) {
+    if (p != null) {
+      int code = _send(p);
+      if (code == 0) {
+        if (p.isQoS() && !QoS4SendDaemon.getInstance().exist(p.getFp())) {
+          QoS4SendDaemon.getInstance().put(p);
+        }
+      }
+      return code;
+    } else {
+      return ErrorCode.COMMON_INVALID_Protocol;
+    }
+  }
+
+  int _send(Protocol Protocol) {
+    int codeForCheck = _checkBeforeSend();
+    if (codeForCheck != ErrorCode.COMMON_CODE_OK) {
+      return codeForCheck;
+    }
+
+    var dataStr = Protocol.toJson().toJsonStr();
+    Log.info(" _send 发送消息:$dataStr", _tag);
+
+    var tcpSm = LocalSocketProvider.getInstance().getLocalSocket();
+    Log.info(" _send tcpSm:${tcpSm?.isActive()}", _tag);
+    if (tcpSm != null && tcpSm.isActive()) {
+      return tcpSm.sendMsg(dataStr)
+          ? ErrorCode.COMMON_CODE_OK
+          : ErrorCode.COMMON_DATA_SEND_FAILED;
+    } else {
+      Log.info("【IMCORE-TCP】socket 未连接，无法发送，本条将被忽略（dataStr=$dataStr）!", _tag);
+      return ErrorCode.COMMON_CODE_OK;
+    }
+  }
+
+  int _checkBeforeSend() {
+    if (!ClientCoreSDK.getInstance().isInitialed()) {
+      return ErrorCodeForC.CLIENT_SDK_NO_INITIALED;
+    }
+    return ErrorCode.COMMON_CODE_OK;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_socket_provider.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_socket_provider.dart
new file mode 100644
index 00000000..06a7c887
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/local_socket_provider.dart
@@ -0,0 +1,109 @@
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/conf/config_entity.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_receiver.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/mb_observer.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/tcp_socket_manager.dart';
+import 'keep_alive_daemon.dart';
+
+class LocalSocketProvider {
+  final String _tag = "LocalSocketProvider";
+
+  //<editor-fold desc="单例">
+
+  factory LocalSocketProvider.getInstance() => _instance;
+
+  static late final LocalSocketProvider _instance =
+      LocalSocketProvider._internal();
+
+  LocalSocketProvider._internal() {
+    _localSocket = TcpSocketManager();
+    _localSocket.init(ConfigEntity.serverIP, ConfigEntity.serverPort,
+        onConnectionLost: () {
+      Log.info(
+          "【IMCORE】连接已断开。。。。(isLocalSocketReady=${isLocalSocketReady()}, ClientCoreSDK.connectedToServer=${ClientCoreSDK.getInstance().isConnectedToServer()})",
+          _tag);
+
+      // 快速响应tcp连接断开事件，第一时间反馈给上层
+      if (ClientCoreSDK.getInstance().isConnectedToServer()) {
+        Log.info(
+            "【IMCORE】连接已断开，立即提前进入框架的“通信通道”断开处理逻辑(而不是等心跳线程探测到，那就已经比较迟了)......",
+            _tag);
+        KeepAliveDaemon.getInstance().notifyConnectionLost();
+      }
+    }, messageReceived: (msg) {
+      LocalDataReceiver.getInstance().handleProtocolJson(msg);
+    });
+  }
+
+  //</editor-fold>
+
+  late TcpSocketManager _localSocket;
+
+  MBObserver? _connectionDoneObserver;
+
+  void setConnectionDoneObserver(MBObserver connectionDoneObserver) {
+    _connectionDoneObserver = connectionDoneObserver;
+  }
+
+  TcpSocketManager? resetLocalSocket() {
+    try {
+      closeLocalSocket();
+      tryConnectToHost();
+      return _localSocket;
+    } catch (e) {
+      Log.error("【IMCORE-TCP】重置localSocket时出错，原因是：${e.toString()}", _tag);
+      return null;
+    }
+  }
+
+  tryConnectToHost() {
+    try {
+      Log.info("【IMCORE-TCP】tryConnectToHost并获取connection开始了...", _tag);
+
+      _localSocket.connectSocket(onSuccess: () {
+        Log.info(
+            "【IMCORE-tryConnectToHost-异步回调】Connection established successfully",
+            _tag);
+        _connectionDoneObserver?.update(true, null);
+        _connectionDoneObserver = null;
+      }, onError: (e) {
+        Log.error(
+            "【IMCORE-tryConnectToHost-异步回调】连接失败，原因是：${e.toString()}", _tag);
+      });
+    } catch (e) {
+      Log.error(
+          "【IMCORE-TCP】连接Server(IP[${ConfigEntity.serverIP}],PORT[${ConfigEntity.serverPort}])失败  ${e.toString()}",
+          _tag);
+    }
+  }
+
+  bool isLocalSocketReady() {
+    return _localSocket.isActive();
+  }
+
+  TcpSocketManager? getLocalSocket() {
+    if (isLocalSocketReady()) {
+      return _localSocket;
+    } else {
+      return resetLocalSocket();
+    }
+  }
+
+  void closeLocalSocket({bool silent = true}) {
+    if (!silent) {
+      Log.info("【IMCORE-TCP】正在closeLocalSocket()...", _tag);
+    }
+    try {
+      _localSocket.close();
+    } catch (e) {
+      Log.error(
+          "【IMCORE-TCP】在closeLocalSocket方法中试图释放localSocket资源时：${e.toString()}",
+          _tag);
+    }
+
+    if (!silent) {
+      Log.info("【IMCORE-TCP】Socket处于未初化状态（可能是您还未登陆），无需关闭。", _tag);
+    }
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/qos_4_receive_daemon.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/qos_4_receive_daemon.dart
new file mode 100644
index 00000000..9d033c01
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/qos_4_receive_daemon.dart
@@ -0,0 +1,135 @@
+// ignore_for_file: constant_identifier_names
+
+import 'dart:collection';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Ext.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Handler.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol.dart';
+
+class QoS4ReceiveDaemon {
+  final String _tag = "QoS4ReceiveDaemon";
+
+  //<editor-fold desc="单例">
+
+  factory QoS4ReceiveDaemon.getInstance() => _instance;
+
+  static late final QoS4ReceiveDaemon _instance = QoS4ReceiveDaemon._internal();
+
+  QoS4ReceiveDaemon._internal() {
+    _initM();
+  }
+
+  //</editor-fold>
+
+  static const CHECK_INTERVAL = 5 * 60 * 1000; // 5分钟
+  static const MESSAGES_VALID_TIME = 10 * 60 * 1000; // 10分钟
+
+  final LinkedHashMap<String, int> _receivedMessages =
+      LinkedHashMap<String, int>();
+
+  bool _running = false;
+  bool _executing = false;
+  bool _init = false;
+
+  late Handler _handler;
+  late Runnable _runnable;
+
+  void _initM() {
+    if (_init) return;
+
+    _handler = Handler();
+    _runnable = () async {
+      if (!_executing) {
+        _executing = true;
+
+        Log.info(
+            "【IMCORE-TCP】【QoS接收方】+++++ START 暂存处理线程正在运行中，当前长度 ${_receivedMessages.length} .",
+            _tag);
+
+        for (String key in _receivedMessages.keys) {
+          int receivedTime = _receivedMessages[key] ?? 0;
+          int delta = ClientCoreSDK.getCurrentTimeStamp() - receivedTime;
+          if (delta >= MESSAGES_VALID_TIME) {
+            _receivedMessages.remove(key);
+            Log.info(
+                "【IMCORE-TCP】【QoS接收方】指纹为 $key 的包已生存 $delta ms(最大允许${MESSAGES_VALID_TIME}ms), 马上将删除之.",
+                _tag);
+          }
+        }
+      }
+    };
+
+    Log.info(
+        "【IMCORE-TCP】【QoS接收方】+++++ END 暂存处理线程正在运行中，当前长度 ${_receivedMessages.length}.",
+        _tag);
+
+    _executing = false;
+
+    _handler.postDelayed(_runnable, CHECK_INTERVAL);
+
+    _init = true;
+  }
+
+  void startup(bool immediately) {
+    stop();
+
+    if (_receivedMessages.isNotEmpty) {
+      for (var key in _receivedMessages.keys) {
+        putImpl(key);
+      }
+    }
+
+    _handler.postDelayed(_runnable, immediately ? 0 : CHECK_INTERVAL);
+    _running = true;
+  }
+
+  void stop() {
+    _handler.removeCallbacks(_runnable);
+    _running = false;
+  }
+
+  bool isRunning() {
+    return _running;
+  }
+
+  bool isInit() {
+    return _init;
+  }
+
+  void addReceived(Protocol p) {
+    if (!p.isQoS()) return;
+
+    var fingerPrintOfProtocol = p.toJson().toJsonStr();
+
+    if (fingerPrintOfProtocol.isEmpty) {
+      Log.info("【IMCORE-TCP】无效的 fingerPrintOfProtocol isEmpty!", _tag);
+      return;
+    }
+
+    if (_receivedMessages.containsKey(fingerPrintOfProtocol)) {
+      Log.info(
+          "【IMCORE-TCP】【QoS接收方】指纹为 $fingerPrintOfProtocol 的消息已经存在于接收列表中，该消息重复了（原理可能是对方因未收到应答包而错误重传导致），更新收到时间戳哦.",
+          _tag);
+    }
+
+    putImpl(fingerPrintOfProtocol);
+  }
+
+  void putImpl(String fingerPrintOfProtocol) {
+    _receivedMessages[fingerPrintOfProtocol] =
+        DateTime.now().millisecondsSinceEpoch;
+  }
+
+  bool hasReceived(String fingerPrintOfProtocol) {
+    return _receivedMessages.containsKey(fingerPrintOfProtocol);
+  }
+
+  void clear() {
+    _receivedMessages.clear();
+  }
+
+  int size() {
+    return _receivedMessages.length;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/qos_4_send_daemon.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/qos_4_send_daemon.dart
new file mode 100644
index 00000000..7aa49a37
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/core/qos_4_send_daemon.dart
@@ -0,0 +1,191 @@
+// ignore_for_file: constant_identifier_names
+
+import 'dart:collection';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/client_core_sdk.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/local_data_sender.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Handler.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol.dart';
+
+class QoS4SendDaemon {
+  final _tag = "QoS4SendDaemon";
+
+  //<editor-fold desc="单例">
+
+  factory QoS4SendDaemon.getInstance() => _instance;
+
+  static late final QoS4SendDaemon _instance = QoS4SendDaemon._internal();
+
+  QoS4SendDaemon._internal() {
+    _initM();
+  }
+
+  //</editor-fold>
+
+  static const CHECK_INTERVAL = 5000;
+  static const MESSAGES_JUST$NOW_TIME = 3 * 1000;
+  static const QOS_TRY_COUNT = 2;
+
+  final HashMap<String, Protocol> _sentMessages = HashMap();
+  final HashMap<String, int> _sendMessagesTimestamp = HashMap();
+
+  bool _running = false;
+  bool _executing = false;
+  bool _init = false;
+
+  late Handler _handler;
+  late Runnable _runnable;
+
+  void _initM() {
+    if (_init) return;
+
+    _handler = Handler();
+    _runnable = () async {
+      if (!_executing) {
+        List<Protocol> lostMessages = [];
+        final List<Protocol> ret = _doRetryCheck(lostMessages);
+        _onRetryCheck(ret);
+      }
+    };
+
+    _init = true;
+  }
+
+  List<Protocol> _doRetryCheck(List<Protocol> lostMessages) {
+    _executing = true;
+
+    try {
+      if (_sentMessages.isNotEmpty) {
+        Log.info(
+            "【IMCORE-TCP】【QoS】====== 消息发送质量保证线程运行中, 当前需要处理的列表长度为 ${_sentMessages.length} ...",
+            _tag);
+      }
+
+      final needRemoveKeyList = List.empty(growable: true);
+
+      for (String key in _sentMessages.keys) {
+        final p = _sentMessages[key];
+        if (p != null && p.isQoS()) {
+          if (p.getRetryCount() >= QOS_TRY_COUNT) {
+            Log.info(
+                "【IMCORE-TCP】【QoS】指纹为 ${p.getFp()} 的消息包重传次数已达 ${p.getRetryCount()}(最多 $QOS_TRY_COUNT 次)上限，将判定为丢包！",
+                _tag);
+            lostMessages.add(p);
+            needRemoveKeyList.add(p.getFp());
+          } else {
+            // Bug Fix: 解决了无线网络延较大时，刚刚发出的消息在其应答包还在途中时被错误地进行重传
+            final sendMessageTimestamp = _sendMessagesTimestamp[key];
+            final delta = ClientCoreSDK.getCurrentTimeStamp() -
+                (sendMessageTimestamp ?? 0);
+            if (delta <= MESSAGES_JUST$NOW_TIME) {
+              Log.info(
+                  "【IMCORE-TCP】【QoS】指纹为 $key 的包距\"刚刚\"发出才 $delta ms(<=${MESSAGES_JUST$NOW_TIME} ms将被认定是\"刚刚\"), 本次不需要重传哦.",
+                  _tag);
+            }
+            // Bug Fix END
+            else {
+              var code = LocalDataSender.getInstance().sendCommonDataObj(p);
+              p.increaseRetryCount();
+              if (code == 0) {
+                Log.info(
+                    "【IMCORE-TCP】【QoS】指纹为 ${p.getFp()} 的消息包已成功进行重传，此次之后重传次数已达 ${p.getRetryCount()} (最多 $QOS_TRY_COUNT 次).",
+                    _tag);
+              } else {
+                Log.info(
+                    "【IMCORE-TCP】【QoS】指纹为 ${p.getFp()} 的消息包重传失败，它的重传次数之前已累计为 ${p.getRetryCount()} (最多 $QOS_TRY_COUNT 次).",
+                    _tag);
+              }
+            }
+          }
+        } else {
+          needRemoveKeyList.add(key);
+        }
+      }
+
+      for (var element in needRemoveKeyList) {
+        removeByFp(element);
+      }
+    } catch (eee) {
+      Log.error("【IMCORE-TCP】【QoS】消息发送质量保证线程运行时发生异常,$eee", _tag);
+    }
+    return lostMessages;
+  }
+
+  void _onRetryCheck(List<Protocol> al) {
+    if (al.isNotEmpty) notifyMessageLost(al);
+    _executing = false;
+    _handler.postDelayed(_runnable, CHECK_INTERVAL);
+  }
+
+  void notifyMessageLost(List<Protocol> lostMessages) {
+    ClientCoreSDK.getInstance()
+        .getMessageQoSEvent()
+        ?.messagesLost(lostMessages);
+  }
+
+  void startup(bool immediately) {
+    stop();
+    _handler.postDelayed(_runnable, immediately ? 0 : CHECK_INTERVAL);
+    _running = true;
+  }
+
+  void stop() {
+    _handler.removeCallbacks(_runnable);
+    _running = false;
+  }
+
+  bool isRunning() {
+    return _running;
+  }
+
+  bool isInit() {
+    return _init;
+  }
+
+  bool exist(String fingerPrint) {
+    return _sentMessages[fingerPrint] != null;
+  }
+
+  void put(Protocol? p) {
+    if (p == null) {
+      Log.info("Invalid arg p==null.", _tag);
+      return;
+    }
+    if (p.getFp() == null) {
+      Log.info("Invalid arg p.getFp() == null.", _tag);
+      return;
+    }
+
+    if (!p.isQoS()) {
+      Log.info("This protocol is not QoS pkg, ignore it!", _tag);
+      return;
+    }
+
+    if (_sentMessages[p.getFp()] != null) {
+      Log.info(
+          "【IMCORE-TCP】【QoS】指纹为 ${p.getFp()} 的消息已经放入了发送质量保证队列，该消息为何会重复？（生成的指纹码重复？还是重复put？）",
+          _tag);
+    }
+
+    var key = p.getFp();
+    _sentMessages[key] = p;
+    _sendMessagesTimestamp[key] = ClientCoreSDK.getCurrentTimeStamp();
+  }
+
+  void removeByFp(final String fingerPrint) {
+    _sendMessagesTimestamp.remove(fingerPrint);
+    var removedObj = _sentMessages.remove(fingerPrint);
+    Log.info(
+        "【IMCORE-TCP】【QoS】指纹为 $fingerPrint 的消息已成功从发送质量保证队列中移除(可能是收到接收方的应答也可能是达到了重传的次数上限)，重试次数= ${removedObj?.getRetryCount()}",
+        _tag);
+  }
+
+  void clear() {
+    _sentMessages.clear();
+    _sendMessagesTimestamp.clear();
+  }
+
+  int size() {
+    return _sentMessages.length;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/chat_base_event.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/chat_base_event.dart
new file mode 100644
index 00000000..8328c35f
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/chat_base_event.dart
@@ -0,0 +1,22 @@
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_kickout_info.dart';
+
+abstract class ChatBaseEvent {
+
+  /// 本地用户的登陆结果回调事件通知。
+  ///
+  /// @param [errorCode] 服务端反馈的登录结果：0 表示登陆成功，否则为服务端自定义的出错代码（按照约定通常为>=1025的数）
+  void onLoginResponse(int errorCode);
+
+  /// 与服务端的通信断开的回调事件通知。
+  /// <br>
+  /// 该消息只有在客户端连接服务器成功之后网络异常中断之时触发。<br>
+  /// 导致与与服务端的通信断开的原因有（但不限于）：无线网络信号不稳定、WiFi与2G/3G/4G等同开情况下的网络切换、手机系统的省电策略等。
+  ///
+  /// @param [errorCode] 本回调参数表示表示连接断开的原因，目前错误码没有太多意义，仅作保留字段，目前通常为-1
+  void onLinkClose(int errorCode);
+
+  /// 本的用户被服务端踢出的回调事件通知。
+  ///
+  /// @param [kickOutInfo] 被踢信息对象，[PKickoutInfo] 对象中的 code字段定义了被踢原因代码
+  void onKickOut(PKickoutInfo kickOutInfo);
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/chat_message_event.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/chat_message_event.dart
new file mode 100644
index 00000000..56366c19
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/chat_message_event.dart
@@ -0,0 +1,22 @@
+/// 与IM服务器的数据交互事件在此 [ChatTransDataEvent] 子类中实现即可。
+abstract class ChatMessageEvent {
+
+  /// 收到普通消息的回调事件通知。
+  /// <br>应用层可以将此消息进一步按自已的IM协议进行定义，从而实现完整的即时通信软件逻辑。
+  ///
+  /// @param [fingerPrintOfProtocol] 当该消息需要QoS支持时本回调参数为该消息的特征指纹码，否则为null
+  /// @param [userid]                消息的发送者id（MobileIMSDK框架中规定发送者id="0"即表示是由服务端主动发过的，否则表示的
+  ///                              是其它客户端发过来的消息）
+  /// @param [dataContent]           消息内容的文本表示形式
+  /// @param [typeu]                 意义：应用层专用字段——用于应用层存放聊天、推送等场景下的消息类型。 注意：此值为-1时表示未定
+  ///                              义。MobileIMSDK框架中，本字段为保留字段，不参与框架的核心算法，专留用应用 层自行定义
+  ///                              和使用。 默认：-1。
+  void onReceiveMessage(String fingerPrintOfProtocol, String userid,
+      String dataContent, int typeu);
+
+  /// 服务端反馈的出错信息回调事件通知。
+  ///
+  /// @param [errorCode] 错误码，定义在常量表 [ErrorCodeForS] 类中
+  /// @param [errorMsg]  描述错误内容的文本信息
+  void onErrorResponse(int errorCode, String errorMsg);
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/message_qoS_event.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/message_qoS_event.dart
new file mode 100644
index 00000000..f1b4c696
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/event/message_qoS_event.dart
@@ -0,0 +1,25 @@
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol.dart';
+
+/// 消息送达相关事件（由QoS机制通知上来的）在此 [MessageQoSEvent]子类中实现即可。
+abstract class MessageQoSEvent {
+
+  /// 消息未送达的回调事件通知.
+  ///
+  /// @param [lostMessages] 由 MobileIMSDK QoS算法判定出来的未送达消息列表（此列表中的[Protocol]对象是原对象的
+  ///                     clone（即原对象的深拷贝），请放心使用哦），应用层可通过指纹特征码找到原消息并可
+  ///
+  void messagesLost(List<Protocol> lostMessages);
+
+  /// 消息已被对方收到的回调事件通知.
+  /// <p>
+  /// <b>目前，判定消息被对方收到是有两种可能：</b><br>
+  /// <ul>
+  /// <li>1) 对方确实是在线并且实时收到了；</li>
+  /// <li>2) 对方不在线或者服务端转发过程中出错了，由服务端进行离线存储成功后的反馈（此种情况严格来讲不能算是“已被
+  /// 		收到”，但对于应用层来说，离线存储了的消息原则上就是已送达了的消息：因为用户下次登陆时肯定能通过HTTP协议取到）。</li>
+  /// </ul>
+  ///
+  /// @param [theFingerPrint] 已被收到的消息的指纹特征码（唯一ID），应用层可据此ID来找到原先已发生的消息并可在
+  ///                       UI是将其标记为”已送达“或”已读“以便提升用户体验
+  void messagesBeReceived(String theFingerPrint);
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/ext.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/ext.dart
new file mode 100644
index 00000000..a6af2487
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/ext.dart
@@ -0,0 +1,19 @@
+import 'dart:convert';
+
+extension MapExt on Map<String, dynamic> {
+  String toJsonStr() {
+    var newMap = <String, dynamic>{};
+    for (var element in entries) {
+      if (element.value != null) newMap[element.key] = element.value;
+    }
+    return json.encode(newMap);
+  }
+}
+
+extension Tm on DateTime {
+  String hms() {
+    return "$hour:$minute:$second";
+  }
+}
+
+String nowHmsStrWithMark() => "[${DateTime.now().hms()}]";
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/handler.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/handler.dart
new file mode 100644
index 00000000..79a2436c
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/handler.dart
@@ -0,0 +1,35 @@
+import 'dart:async';
+import 'dart:collection';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+
+class Handler {
+  final HashMap<String, Timer> _mRunnableMap = HashMap();
+
+  void postDelayed(Runnable runnable, int delay) {
+    var key = runnable.getKey();
+    _mRunnableMap[key]?.cancel();
+    _mRunnableMap[key] = Timer(Duration(milliseconds: delay), () {
+      runnable.call();
+    });
+  }
+
+  void removeCallbacks(Runnable runnable) {
+    var key = runnable.getKey();
+    _mRunnableMap[key]?.cancel();
+    _mRunnableMap.remove(key);
+  }
+
+  void clearAll() {
+    _mRunnableMap.clear();
+  }
+}
+
+typedef Runnable = Function;
+
+extension RunnableExt on Runnable {
+  String getKey() {
+    var key = hashCode.toString();
+    Log.info("Runnable Handler key:$key ","RunnableExt getKey");
+    return key;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/log.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/log.dart
new file mode 100644
index 00000000..31465f4a
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/log.dart
@@ -0,0 +1,87 @@
+import 'package:flutter/foundation.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/ext.dart';
+import 'package:stack_trace/stack_trace.dart';
+
+class Log {
+  static Function? cacheLogInfo;
+
+  static void info(dynamic message, String? tag) {
+    if (kDebugMode) {
+      var info = "[info] $tag ${nowHmsStrWithMark()}--> $message";
+      WLog(info, mode: WLogMode.info);
+      cacheLogInfo?.call(info);
+    }
+  }
+
+  static void debug(dynamic message, String? tag) {
+    if (kDebugMode) {
+      var info = "[debug] $tag ${nowHmsStrWithMark()}--> $message";
+      WLog(info, mode: WLogMode.debug);
+      cacheLogInfo?.call(info);
+    }
+  }
+
+  static void warn(dynamic message, String? tag) {
+    if (kDebugMode) {
+      var info = "[warning] $tag ${nowHmsStrWithMark()}--> $message";
+      WLog(info, mode: WLogMode.warning);
+      cacheLogInfo?.call(info);
+    }
+  }
+
+  static void error(dynamic message, String? tag) {
+    if (kDebugMode) {
+      var info = "[error] $tag ${nowHmsStrWithMark()}--> $message";
+      WLog(info, mode: WLogMode.error);
+      cacheLogInfo?.call(info);
+    }
+  }
+}
+
+enum WLogMode {
+  debug, // 💚 DEBUG
+  warning, // 💛 WARNING
+  info, // 💙 INFO
+  error, // ❤️ ERROR
+}
+
+String WLog(dynamic msg, {WLogMode mode = WLogMode.debug}) {
+  if (kReleaseMode) {
+    // release模式不打印
+    return "";
+  }
+  var chain = Chain.current(); // Chain.forTrace(StackTrace.current);
+  // 将 core 和 flutter 包的堆栈合起来（即相关数据只剩其中一条）
+  chain =
+      chain.foldFrames((frame) => frame.isCore || frame.package == "flutter");
+  // 取出所有信息帧
+  final frames = chain.toTrace().frames;
+  // 找到当前函数的信息帧
+  final idx = frames.indexWhere((element) => element.member == "WLog");
+  if (idx == -1 || idx + 1 >= frames.length) {
+    return "";
+  }
+  // 调用当前函数的函数信息帧
+  final frame = frames[idx + 1];
+
+  var modeStr = "";
+  switch (mode) {
+    case WLogMode.debug:
+      modeStr = "💚 DEBUG";
+      break;
+    case WLogMode.warning:
+      modeStr = "💛 WARNING";
+      break;
+    case WLogMode.info:
+      modeStr = "💙 INFO";
+      break;
+    case WLogMode.error:
+      modeStr = "❤️ ERROR";
+      break;
+  }
+
+  final printStr =
+      "$modeStr ${frame.uri.toString().split("/").last}(${frame.line}) - $msg ";
+  debugPrint(printStr);
+  return printStr;
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/mb_observer.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/mb_observer.dart
new file mode 100644
index 00000000..3fda877c
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/mb_observer.dart
@@ -0,0 +1,9 @@
+class MBObserver {
+  final Function(bool success, Object? extraObj) _cb;
+
+  MBObserver(this._cb);
+
+  void update(bool success, Object? extraObj) {
+    _cb.call(success, extraObj);
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/mb_simple_timer.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/mb_simple_timer.dart
new file mode 100644
index 00000000..5823f3f0
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/mb_simple_timer.dart
@@ -0,0 +1,43 @@
+import 'dart:async';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+
+class MBSimpleTimer {
+  late final _tag = "MBSimpleTimer:$hashCode";
+
+  Timer? _timer;
+  int _interval = -1;
+  late Function _doAction;
+
+  MBSimpleTimer(int interval, Function action) {
+    _interval = interval;
+    _doAction = action;
+  }
+
+  void setInterval(int interval) {
+    _interval = interval;
+  }
+
+  void _doCallback() {
+    try {
+      _doAction.call();
+    } catch (e) {
+      Log.error(e, _tag);
+    }
+  }
+
+  void start(bool immediately) {
+    stop();
+
+    _timer = Timer.periodic(Duration(milliseconds: _interval), (timer) {
+      _doCallback();
+    });
+
+    if (immediately) {
+      _doCallback();
+    }
+  }
+
+  void stop() {
+    _timer?.cancel();
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/tcp_socket_manager.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/tcp_socket_manager.dart
new file mode 100644
index 00000000..3ffd2a0c
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/sdk/utils/tcp_socket_manager.dart
@@ -0,0 +1,156 @@
+import 'dart:convert';
+import 'dart:core';
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:mobile_im_sdk_flutter_tcp/sdk/core/keep_alive_daemon.dart';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/log.dart';
+
+class TcpSocketManager {
+  final tag = "TcpSocketManager";
+
+  ///用于描述消息长度的固定长度
+  static int tcpFrameFixedHeaderLength = 4; // 4 bytes
+  static int tcpFrameMaxBodyLength = 6 * 1024; // 6K bytes
+
+  late String _host;
+  late int _port;
+  Socket? _mSocket;
+  bool _cancelOnError = false;
+  bool _isActive = false;
+  Function? _messageReceived;
+  Function? _onConnectionLost;
+
+  void init(String host, int port,
+      {bool cancelOnError = false,
+      Function? messageReceived,
+      Function? onConnectionLost}) {
+    _host = host;
+    _port = port;
+    _cancelOnError = cancelOnError;
+    _messageReceived = messageReceived;
+    _onConnectionLost = onConnectionLost;
+  }
+
+  void connectSocket({Function? onSuccess, Function? onError}) async {
+    if (_mSocket != null) return;
+    try {
+      await Socket.connect(_host, _port,
+              timeout: Duration(
+                  milliseconds: KeepAliveDaemon.NETWORK_CONNECTION_TIME_OUT))
+          .then((socket) {
+        _mSocket = socket;
+        _mSocket?.listen(_receivedMsgHandler,
+            onError: _errorHandler,
+            onDone: _doneHandler,
+            cancelOnError: _cancelOnError);
+        Log.info('---------连接成功------------$_mSocket', tag);
+        _isActive = true;
+        onSuccess?.call();
+      });
+    } catch (e) {
+      onError?.call(e);
+      _mSocket?.destroy();
+      _mSocket = null;
+      _isActive = false;
+      Log.error("连接socket出现异常，e=${e.toString()}", tag);
+    }
+  }
+
+  void close() {
+    _doneHandler();
+  }
+
+  bool isActive() {
+    return _isActive && _mSocket != null;
+  }
+
+  void _errorHandler(error, StackTrace trace) {
+    Log.error("捕获socket异常信息：error=$error，trace=${trace.toString()}", tag);
+    close();
+  }
+
+  void _doneHandler() {
+    _isActive = false;
+    _mSocket?.destroy();
+    _mSocket = null;
+    _onConnectionLost?.call();
+    Log.warn("socket关闭处理", tag);
+  }
+
+  void _receivedMsgHandler(Uint8List data) async {
+    _decodeHandle(data);
+  }
+
+  //<editor-fold desc="解码消息">
+
+  /// 缓存的网络数据，暂未处理（一般这里有数据，说明当前接收的数据不是一个完整的消息，需要等待其它数据的到来拼凑成一个完整的消息） */
+  Uint8List _cacheData = Uint8List(0);
+
+  /// 解码处理方法
+  /// 处理服务器发过来的数据，注意，这里要处理粘包，这个data参数不一定是一个完整的包
+  void _decodeHandle(Uint8List newData) async {
+    //拼凑当前最新未处理的网络数据
+    _cacheData = Uint8List.fromList(_cacheData + newData);
+
+    //缓存数据长度符合最小包长度才尝试解码
+    while (_cacheData.length >= tcpFrameFixedHeaderLength) {
+      //读取消息长度
+      var byteData = _cacheData.buffer.asByteData();
+      var bodyLen = byteData.getInt32(0);
+
+      //数据长度小于消息长度，说明不是完整的数据，暂不处理
+      if (_cacheData.length < bodyLen + tcpFrameFixedHeaderLength) {
+        return;
+      }
+
+      //读取 body 数据
+      Uint8List pbBody;
+      if (bodyLen > 0) {
+        pbBody = _cacheData.sublist(
+            tcpFrameFixedHeaderLength, tcpFrameFixedHeaderLength + bodyLen);
+      } else {
+        pbBody = Uint8List.fromList(List.empty());
+      }
+
+      //整理缓存数据
+      int totalLen = tcpFrameFixedHeaderLength + pbBody.length;
+      _cacheData = _cacheData.sublist(totalLen, _cacheData.length);
+
+      var msgStr = utf8.decode(pbBody);
+      Log.info("[msg] 接收到的消息：$msgStr", tag);
+      //处理消息
+      _messageReceived?.call(msgStr);
+    }
+  }
+
+  //</editor-fold>
+
+  ///发送数据
+  bool sendMsg(String message) {
+    var result = false;
+    if (!isActive()) return result;
+
+    //序列化pb对象
+    Uint8List pbBody = Uint8List.fromList(utf8.encode(message));
+    int dataLength = pbBody.length;
+
+    //包头部分
+    var header = ByteData(tcpFrameFixedHeaderLength);
+    header.setInt32(0, dataLength);
+
+    var msgInfoIntList = pbBody.buffer.asUint8List();
+    //包头+message组合成一个完整的数据包
+    var msg = header.buffer.asUint8List() + msgInfoIntList;
+
+    //给服务器发消息
+    try {
+      _mSocket?.add(msg);
+      Log.info("[msg] 给服务端发送消息，$message", tag);
+      result = true;
+    } catch (e) {
+      Log.error("send捕获异常：message=$message，e=${e.toString()}", tag);
+    }
+    return result;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/c/p_keep_alive.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/c/p_keep_alive.dart
new file mode 100644
index 00000000..6b1615b5
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/c/p_keep_alive.dart
@@ -0,0 +1,10 @@
+class PKeepAlive {
+  PKeepAlive();
+
+  //命名式构造方法，也可以是用工厂构造方法
+  PKeepAlive.fromJson(Map<String, dynamic> json);
+
+  //如果想写成协议，归档(json和对象互转时，为了使用方便)时，可以继承协议，那么可以用普通方法，而不是构造方法
+  Map<String, dynamic> toJson() => {};
+
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/c/p_login_info.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/c/p_login_info.dart
new file mode 100644
index 00000000..34c1bf46
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/c/p_login_info.dart
@@ -0,0 +1,64 @@
+import 'dart:core';
+
+class PLoginInfo {
+  String? _loginUserId;
+  String? _loginToken;
+  String? _extra;
+  int _firstLoginTime = 0;
+
+  PLoginInfo(String this._loginUserId, {String? loginToken, String? extra}) {
+    _loginToken = loginToken;
+    _extra = extra;
+  }
+
+  //命名式构造方法，也可以是用工厂构造方法
+  PLoginInfo.fromJson(Map<String, dynamic> json)
+      : _loginUserId = json['loginUserId'],
+        _loginToken = json['loginToken'],
+        _extra = json['extra'],
+        _firstLoginTime = json['firstLoginTime'];
+
+  //如果想写成协议，归档(json和对象互转时，为了使用方便)时，可以继承协议，那么可以用普通方法，而不是构造方法
+  Map<String, dynamic> toJson() => {
+        'loginUserId': _loginUserId,
+        'loginToken': _loginToken,
+        'extra': _extra,
+        'firstLoginTime': _firstLoginTime
+      };
+
+  getLoginUserId() {
+    return _loginUserId;
+  }
+
+  void setLoginUserId(String loginUserId) {
+    _loginUserId = loginUserId;
+  }
+
+  getLoginToken() {
+    return _loginToken;
+  }
+
+  void setLoginToken(String loginToken) {
+    _loginToken = loginToken;
+  }
+
+  getExtra() {
+    return _extra;
+  }
+
+  void setExtra(String extra) {
+    _extra = extra;
+  }
+
+  getFirstLoginTime() {
+    return _firstLoginTime;
+  }
+
+  void setFirstLoginTime(int firstLoginTime) {
+    _firstLoginTime = firstLoginTime;
+  }
+
+  bool isFirstLogin() {
+    return _firstLoginTime <= 0;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/error_code.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/error_code.dart
new file mode 100644
index 00000000..9723444d
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/error_code.dart
@@ -0,0 +1,21 @@
+// ignore_for_file: constant_identifier_names
+
+class ErrorCode {
+  static const int COMMON_CODE_OK = 0;
+  static const int COMMON_NO_LOGIN = 1;
+  static const int COMMON_UNKNOWN_ERROR = 2;
+  static const int COMMON_DATA_SEND_FAILED = 3;
+  static const int COMMON_INVALID_Protocol = 4;
+}
+
+class ErrorCodeForC extends ErrorCode {
+  static const int BROKEN_CONNECT_TO_SERVER = 201;
+  static const int BAD_CONNECT_TO_SERVER = 202;
+  static const int CLIENT_SDK_NO_INITIALED = 203;
+  static const int LOCAL_NETWORK_NOT_WORKING = 204;
+  static const int TO_SERVER_NET_INFO_NOT_SETUP = 205;
+}
+
+class ErrorCodeForS extends ErrorCode {
+  static const int RESPONSE_FOR_UN_LOGIN = 301;
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol.dart
new file mode 100644
index 00000000..158f2ea2
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol.dart
@@ -0,0 +1,144 @@
+import 'dart:math';
+
+class Protocol {
+  bool _bridge = false;
+  int _type = 0;
+  String? _dataContent;
+  String _from = "-1";
+  String _to = "-1";
+  String? _fp;
+  bool _QoS = false;
+  int? _retryCount;
+  int _sm = -1;
+
+  ///意义：应用层专用字段——用于应用层存放聊天、推送等场景下的消息类型。
+  ///注意：此值为-1时表示未定义。
+  ///本字段为保留字段，不参与框架的核心算法，专留用应用 层自行定义和使用。 默认：-1
+  int _typeu = -1;
+
+  Protocol(this._type, this._dataContent, this._from, this._to,
+      {bool? QoS, String? fingerPrint, int typeu = -1}) {
+    _QoS = QoS ?? false;
+    _typeu = typeu;
+    _sm = -1;
+
+    if (_QoS && fingerPrint == null) {
+      _fp = genFingerPrint();
+    } else {
+      _fp = fingerPrint;
+    }
+  }
+
+  //命名式构造方法，也可以是用工厂构造方法
+  Protocol.fromJson(Map<String, dynamic> json)
+      : _bridge = json['bridge'],
+        _type = json['type'],
+        _dataContent = json['dataContent'],
+        _from = json['from'],
+        _to = json['to'],
+        _fp = json['fp'],
+        _QoS = json['QoS'],
+        _retryCount = json['retryCount'],
+        _sm = json['sm'],
+        _typeu = json['typeu'];
+
+  //如果想写成协议，归档(json和对象互转时，为了使用方便)时，可以继承协议，那么可以用普通方法，而不是构造方法
+  Map<String, dynamic> toJson() => {
+        'bridge': _bridge,
+        'type': _type,
+        'dataContent': _dataContent,
+        'from': _from,
+        'to': _to,
+        'fp': _fp,
+        'QoS': _QoS,
+        'retryCount': _retryCount,
+        'sm': _sm,
+        'typeu': _typeu,
+      };
+
+  getType() {
+    return _type;
+  }
+
+  void setType(int type) {
+    _type = type;
+  }
+
+  getDataContent() {
+    return _dataContent;
+  }
+
+  void setDataContent(String dataContent) {
+    _dataContent = dataContent;
+  }
+
+  getFrom() {
+    return _from;
+  }
+
+  void setFrom(String from) {
+    _from = from;
+  }
+
+  getTo() {
+    return _to;
+  }
+
+  void setTo(String to) {
+    _to = to;
+  }
+
+  getFp() {
+    return _fp;
+  }
+
+  getRetryCount() {
+    return _retryCount ?? 0;
+  }
+
+  void increaseRetryCount() {
+    int count = _retryCount ?? 0;
+    ++count;
+    _retryCount = count;
+  }
+
+  isQoS() {
+    return _QoS;
+  }
+
+  void setQoS(bool qoS) {
+    _QoS = qoS;
+  }
+
+  isBridge() {
+    return _bridge;
+  }
+
+  void setBridge(bool bridge) {
+    _bridge = bridge;
+  }
+
+  getTypeu() {
+    return _typeu;
+  }
+
+  void setTypeu(int typeu) {
+    _typeu = typeu;
+  }
+
+  getSm() {
+    return _sm;
+  }
+
+  void setSm(int sm) {
+    _sm = sm;
+  }
+
+  static int genServerTimestamp() {
+    return DateTime.now().millisecondsSinceEpoch;
+  }
+
+  static String genFingerPrint() {
+    return (genServerTimestamp()).toString() + Random().nextDouble().toString();
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol_factory.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol_factory.dart
new file mode 100644
index 00000000..48715b4b
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol_factory.dart
@@ -0,0 +1,120 @@
+import 'dart:convert';
+import 'dart:typed_data';
+import 'package:mobile_im_sdk_flutter_tcp/sdk/utils/Ext.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_error_response.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_keep_alive_response.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_kickout_info.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/s/p_login_info_response.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/c/p_keep_alive.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/c/p_login_info.dart';
+import 'package:mobile_im_sdk_flutter_tcp/server/protocol/protocol_i_type.dart';
+
+class ProtocolFactory {
+  static const serverUserId = "0";
+
+  static String create(Object c) {
+    if (c.runtimeType == Map<String, dynamic>) {
+      return (c as Map<String, dynamic>).toJsonStr();
+    }
+    return json.encode(c);
+  }
+
+  static T parseByteArray<T>(Uint8List fullProtocolJSONBytes, int len,
+      T Function(Uint8List byteArray, int len) doParse) {
+    return doParse(fullProtocolJSONBytes, len);
+  }
+
+  static T parseString<T>(String dataContentOfProtocol,
+      T Function(String dataContentOfProtocol) doParse) {
+    return doParse(dataContentOfProtocol);
+  }
+
+  static Protocol parseFromString(String dataContentOfProtocol) {
+    return Protocol.fromJson(jsonDecode(dataContentOfProtocol));
+  }
+
+  static Protocol createPKeepAliveResponse(String to_user_id) {
+    return Protocol(ProtocolTypeS.FROM_SERVER_TYPE_OF_RESPONSE$KEEP$ALIVE,
+        create(PKeepAliveResponse()), serverUserId, to_user_id);
+  }
+
+  static PKeepAliveResponse parsePKeepAliveResponse(
+      String dataContentOfProtocol) {
+    return PKeepAliveResponse();
+  }
+
+  static Protocol createPKeepAlive(String from_user_id) {
+    return Protocol(ProtocolTypeC.FROM_CLIENT_TYPE_OF_KEEP$ALIVE,
+        create(PKeepAlive()), from_user_id, serverUserId);
+  }
+
+  static PKeepAlive parsePKeepAlive(String dataContentOfProtocol) {
+    return PKeepAlive();
+  }
+
+  static Protocol createPErrorResponse(
+      int errorCode, String errorMsg, String user_id) {
+    return Protocol(ProtocolTypeS.FROM_SERVER_TYPE_OF_RESPONSE$FOR$ERROR,
+        create(PErrorResponse(errorCode, errorMsg)), serverUserId, user_id);
+  }
+
+  static PErrorResponse parsePErrorResponse(String dataContentOfProtocol) {
+    return PErrorResponse.fromJson(json.decode(dataContentOfProtocol));
+  }
+
+  static Protocol createPLogoutInfo(PLoginInfo pLoginInfo) {
+    return Protocol(
+        ProtocolTypeC.FROM_CLIENT_TYPE_OF_LOGOUT, null, pLoginInfo.getLoginUserId(), serverUserId);
+  }
+
+  static Protocol createPLoginInfo(PLoginInfo loginInfo) {
+    return Protocol(
+        ProtocolTypeC.FROM_CLIENT_TYPE_OF_LOGIN,
+        loginInfo.toJson().toJsonStr(),
+        loginInfo.getLoginUserId(),
+        serverUserId);
+  }
+
+  static PLoginInfo parsePLoginInfo(String dataContentOfProtocol) {
+    return PLoginInfo.fromJson(json.decode(dataContentOfProtocol));
+  }
+
+  static Protocol createPLoginInfoResponse(
+      int code, int firstLoginTime, String user_id) {
+    return Protocol(ProtocolTypeS.FROM_SERVER_TYPE_OF_RESPONSE$LOGIN,
+        create(PLoginInfoResponse(code, firstLoginTime)), serverUserId, user_id,
+        QoS: true, fingerPrint: Protocol.genFingerPrint());
+  }
+
+  static PLoginInfoResponse parsePLoginInfoResponse(
+      String dataContentOfProtocol) {
+    return PLoginInfoResponse.fromJson(json.decode(dataContentOfProtocol));
+  }
+
+  static Protocol createCommonData(
+      String dataContent, String from_user_id, String to_user_id, bool QoS,
+      {String? fingerPrint, int typeu = -1}) {
+    return Protocol(ProtocolTypeC.FROM_CLIENT_TYPE_OF_COMMON$DATA, dataContent,
+        from_user_id, to_user_id,
+        QoS: QoS, fingerPrint: fingerPrint, typeu: typeu);
+  }
+
+  static Protocol createRecivedBack(
+      String from_user_id, String to_user_id, String recievedMessageFingerPrint,
+      {bool bridge = false}) {
+    Protocol p = Protocol(ProtocolTypeC.FROM_CLIENT_TYPE_OF_RECEIVED,
+        recievedMessageFingerPrint, from_user_id, to_user_id);
+    p.setBridge(bridge);
+    return p;
+  }
+
+  static Protocol createPKickout(String to_user_id, int code, String reason) {
+    return Protocol(ProtocolTypeS.FROM_SERVER_TYPE_OF_KICKOUT,
+        create(PKickoutInfo(code, reason: reason)), serverUserId, to_user_id);
+  }
+
+  static PKickoutInfo parsePKickoutInfo(String dataContentOfProtocol) {
+    return PKickoutInfo.fromJson(json.decode(dataContentOfProtocol));
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol_i_type.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol_i_type.dart
new file mode 100644
index 00000000..b30fbfd2
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/protocol_i_type.dart
@@ -0,0 +1,20 @@
+// ignore_for_file: constant_identifier_names
+
+abstract class ProtocolType {}
+
+abstract class ProtocolTypeC extends ProtocolType {
+  static const int FROM_CLIENT_TYPE_OF_LOGIN = 0;
+  static const int FROM_CLIENT_TYPE_OF_KEEP$ALIVE = 1;
+  static const int FROM_CLIENT_TYPE_OF_COMMON$DATA = 2;
+  static const int FROM_CLIENT_TYPE_OF_LOGOUT = 3;
+  static const int FROM_CLIENT_TYPE_OF_RECEIVED = 4;
+  static const int FROM_CLIENT_TYPE_OF_ECHO = 5;
+}
+
+abstract class ProtocolTypeS extends ProtocolType{
+  static const int FROM_SERVER_TYPE_OF_RESPONSE$LOGIN = 50;
+  static const int FROM_SERVER_TYPE_OF_RESPONSE$KEEP$ALIVE = 51;
+  static const int FROM_SERVER_TYPE_OF_RESPONSE$FOR$ERROR = 52;
+  static const int FROM_SERVER_TYPE_OF_RESPONSE$ECHO = 53;
+  static const int FROM_SERVER_TYPE_OF_KICKOUT = 54;
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_error_response.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_error_response.dart
new file mode 100644
index 00000000..d1be2aaf
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_error_response.dart
@@ -0,0 +1,35 @@
+import 'dart:core';
+
+class PErrorResponse {
+  int _errorCode = -1;
+  String? _errorMsg;
+
+  PErrorResponse(this._errorCode,this._errorMsg);
+
+  //命名式构造方法，也可以是用工厂构造方法
+  PErrorResponse.fromJson(Map<String, dynamic> json)
+      : _errorCode = json['errorCode'],
+        _errorMsg = json['errorMsg'];
+
+  //如果想写成协议，归档(json和对象互转时，为了使用方便)时，可以继承协议，那么可以用普通方法，而不是构造方法
+  Map<String, dynamic> toJson() => {
+    'errorCode': _errorCode,
+    'errorMsg': _errorMsg
+  };
+
+  getErrorCode() {
+    return _errorCode;
+  }
+
+  void setErrorCode(int errorCode) {
+    _errorCode = errorCode;
+  }
+
+  getErrorMsg() {
+    return _errorMsg;
+  }
+
+  void setErrorMsg(String errorMsg) {
+    _errorMsg = errorMsg;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_keep_alive_response.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_keep_alive_response.dart
new file mode 100644
index 00000000..33344645
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_keep_alive_response.dart
@@ -0,0 +1,10 @@
+class PKeepAliveResponse {
+  PKeepAliveResponse();
+
+  //命名式构造方法，也可以是用工厂构造方法
+  PKeepAliveResponse.fromJson(Map<String, dynamic> json);
+
+  //如果想写成协议，归档(json和对象互转时，为了使用方便)时，可以继承协议，那么可以用普通方法，而不是构造方法
+  Map<String, dynamic> toJson() => {};
+
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_kickout_info.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_kickout_info.dart
new file mode 100644
index 00000000..d2764e66
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_kickout_info.dart
@@ -0,0 +1,37 @@
+// ignore_for_file: constant_identifier_names
+
+class PKickoutInfo {
+  static const KICK_OUT_FOR_DUPLICATE_LOGIN = 1;
+  static const KICK_OUT_FOR_ADMIN = 2;
+  int _code = -1;
+  String _reason = "";
+
+  PKickoutInfo(int code, {String reason = ""}) {
+    _code = code;
+    _reason = reason;
+  }
+
+  //命名式构造方法，也可以是用工厂构造方法
+  PKickoutInfo.fromJson(Map<String, dynamic> json)
+      : _code = json['code'],
+        _reason = json['reason'];
+
+  //如果想写成协议，归档(json和对象互转时，为了使用方便)时，可以继承协议，那么可以用普通方法，而不是构造方法
+  Map<String, dynamic> toJson() => {'code': _code, 'reason': _reason};
+
+  getCode() {
+    return _code;
+  }
+
+  void setCode(int code) {
+    _code = code;
+  }
+
+  getReason() {
+    return _reason;
+  }
+
+  void setReason(String reason) {
+    _reason = reason;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_login_info_response.dart b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_login_info_response.dart
new file mode 100644
index 00000000..b409ce02
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/lib/server/protocol/s/p_login_info_response.dart
@@ -0,0 +1,34 @@
+class PLoginInfoResponse {
+  int _code = 0;
+  int _firstLoginTime = 0;
+
+  PLoginInfoResponse(int code, int firstLoginTime) {
+    _code = code;
+    _firstLoginTime = firstLoginTime;
+  }
+
+  //命名式构造方法，也可以是用工厂构造方法
+  PLoginInfoResponse.fromJson(Map<String, dynamic> json)
+      : _code = json['code'],
+        _firstLoginTime = json['firstLoginTime'];
+
+  //如果想写成协议，归档(json和对象互转时，为了使用方便)时，可以继承协议，那么可以用普通方法，而不是构造方法
+  Map<String, dynamic> toJson() =>
+      {'code': _code, 'firstLoginTime': _firstLoginTime};
+
+  int getCode() {
+    return _code;
+  }
+
+  void setCode(int code) {
+    _code = code;
+  }
+
+  getFirstLoginTime() {
+    return _firstLoginTime;
+  }
+
+  void setFirstLoginTime(int firstLoginTime) {
+    _firstLoginTime = firstLoginTime;
+  }
+}
diff --git a/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/pubspec.yaml b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/pubspec.yaml
new file mode 100644
index 00000000..11962838
--- /dev/null
+++ b/sdk_src/TCP_Client/MobileIMSDK4f_tcp_Open/pubspec.yaml
@@ -0,0 +1,88 @@
+name: mobile_im_sdk_flutter_tcp
+description: MobileImSdkFlutterTcp.
+
+# The following line prevents the package from being accidentally published to
+# pub.dev using `flutter pub publish`. This is preferred for private packages.
+publish_to: 'none' # Remove this line if you wish to publish to pub.dev
+
+# The following defines the version and build number for your application.
+# A version number is three numbers separated by dots, like 1.2.43
+# followed by an optional build number separated by a +.
+# Both the version and the builder number may be overridden in flutter
+# build by specifying --build-name and --build-number, respectively.
+# In Android, build-name is used as versionName while build-number used as versionCode.
+# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
+# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
+# Read more about iOS versioning at
+# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
+# In Windows, build-name is used as the major, minor, and patch parts
+# of the product and file versions while build-number is used as the build suffix.
+version: 1.0.0+1
+
+environment:
+  sdk: '>=3.0.5 <4.0.0'
+
+# Dependencies specify other packages that your package needs in order to work.
+# To automatically upgrade your package dependencies to the latest versions
+# consider running `flutter pub upgrade --major-versions`. Alternatively,
+# dependencies can be manually updated by changing the version numbers below to
+# the latest version available on pub.dev. To see which dependencies have newer
+# versions available, run `flutter pub outdated`.
+dependencies:
+  flutter:
+    sdk: flutter
+
+  duffer: ^1.2.5
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+  # The "flutter_lints" package below contains a set of recommended lints to
+  # encourage good coding practices. The lint set provided by the package is
+  # activated in the `analysis_options.yaml` file located at the root of your
+  # package. See that file for information about deactivating specific lint
+  # rules and activating additional ones.
+  flutter_lints: ^1.0.0
+
+# For information on the generic Dart part of this file, see the
+# following page: https://dart.dev/tools/pub/pubspec
+
+# The following section is specific to Flutter packages.
+flutter:
+
+  # The following line ensures that the Material Icons font is
+  # included with your application, so that you can use the icons in
+  # the material Icons class.
+  uses-material-design: true
+
+  # To add assets to your application, add an assets section, like this:
+  # assets:
+  #   - images/a_dot_burr.jpeg
+  #   - images/a_dot_ham.jpeg
+
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.dev/assets-and-images/#resolution-aware
+
+  # For details regarding adding assets from package dependencies, see
+  # https://flutter.dev/assets-and-images/#from-packages
+
+  # To add custom fonts to your application, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  # fonts:
+  #   - family: Schyler
+  #     fonts:
+  #       - asset: fonts/Schyler-Regular.ttf
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts from package dependencies,
+  # see https://flutter.dev/custom-fonts/#from-packages