优化配置，修复 demo bug

1，network 框架完善
2，websocket 机制完善
3，设计文档整理到架构文档
4，脚本，配置完善

packages/networks_sdk/android/build.gradle

@@ -1,66 +0,0 @@
-group = "com.example.networks_sdk"
-version = "1.0-SNAPSHOT"
-
-buildscript {
-    ext.kotlin_version = "2.2.20"
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath("com.android.tools.build:gradle:8.11.1")
-        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-apply plugin: "com.android.library"
-apply plugin: "kotlin-android"
-
-android {
-    namespace = "com.example.networks_sdk"
-
-    compileSdk = 36
-
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
-    }
-
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_17
-    }
-
-    sourceSets {
-        main.java.srcDirs += "src/main/kotlin"
-        test.java.srcDirs += "src/test/kotlin"
-    }
-
-    defaultConfig {
-        minSdk = 24
-    }
-
-    dependencies {
-        testImplementation("org.jetbrains.kotlin:kotlin-test")
-        testImplementation("org.mockito:mockito-core:5.0.0")
-    }
-
-    testOptions {
-        unitTests.all {
-            useJUnitPlatform()
-
-            testLogging {
-               events "passed", "skipped", "failed", "standardOut", "standardError"
-               outputs.upToDateWhen {false}
-               showStandardStreams = true
-            }
-        }
-    }
-}

packages/networks_sdk/android/build.gradle.kts

@@ -0,0 +1,71 @@
+group = "com.example.networks_sdk"
+version = "1.0-SNAPSHOT"
+
+buildscript {
+    val kotlinVersion = "2.2.20"
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath("com.android.tools.build:gradle:8.11.1")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+plugins {
+    id("com.android.library")
+    id("org.jetbrains.kotlin.android")
+}
+
+android {
+    namespace = "com.example.networks_sdk"
+    compileSdk = 36
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    sourceSets {
+        getByName("main") { java.srcDirs("src/main/kotlin") }
+        getByName("test") { java.srcDirs("src/test/kotlin") }
+    }
+
+    defaultConfig {
+        minSdk = 24
+    }
+
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+            all {
+                it.useJUnitPlatform()
+                it.outputs.upToDateWhen { false }
+                it.testLogging {
+                    events("passed", "skipped", "failed", "standardOut", "standardError")
+                    showStandardStreams = true
+                }
+            }
+        }
+    }
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
+    }
+}
+
+dependencies {
+    // Compose BOM 统一管理子库版本，按需在各 SDK 中引入具体组件
+    testImplementation("org.jetbrains.kotlin:kotlin-test")
+    testImplementation("org.mockito:mockito-core:5.0.0")
+}

packages/networks_sdk/ios/Classes/NetworksSdkPlugin.swift

@@ -1,4 +1,4 @@
-import Flutter
+@preconcurrency import Flutter
 import UIKit
 
 public class NetworksSdkPlugin: NSObject, FlutterPlugin {

packages/networks_sdk/ios/networks_sdk.podspec

@@ -19,7 +19,7 @@ A new Flutter plugin project.
 
   # Flutter.framework does not contain a i386 slice.
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
-  s.swift_version = '5.0'
+  s.swift_version = '6.2'
 
   # If your plugin requires a privacy manifest, for example if it uses any
   # required reason APIs, update the PrivacyInfo.xcprivacy file to describe your

packages/networks_sdk/lib/networks_sdk.dart

@@ -6,8 +6,9 @@ export 'src/presentation/facade/networks_messaging_api.dart';
 // Wiring - Implementations
 export 'src/presentation/wiring/networks_messaging_api_impl.dart';
 
-// Dio 类型重导出（App 层上传 / override decodeResponse 需要，避免直接依赖 dio）
-export 'package:dio/dio.dart' show FormData, MultipartFile, Response;
+// Dio 类型重导出（App 层上传 / CancelToken / override decodeResponse 需要，避免直接依赖 dio）
+export 'package:dio/dio.dart'
+    show FormData, MultipartFile, Response, CancelToken;
 
 // Config
 export 'src/presentation/wiring/api_config.dart';
@@ -18,6 +19,7 @@ export 'src/presentation/wiring/network_callbacks.dart';
 export 'src/data/dto/api_requestable.dart';
 export 'src/data/dto/api_response_wrapper.dart';
 export 'src/domain/entities/api_error.dart';
+export 'src/domain/entities/encrypted_request.dart';
 export 'src/domain/entities/http_method.dart';
 export 'src/domain/entities/api_request_type.dart';
 

packages/networks_sdk/lib/src/data/datasources/http/api_client.dart

@@ -1,12 +1,15 @@
 import 'package:dio/dio.dart';
 import 'package:networks_sdk/src/data/datasources/http/interceptor/auth_interceptor.dart';
+import 'package:networks_sdk/src/data/datasources/http/interceptor/encryption_interceptor.dart';
 import 'package:networks_sdk/src/data/datasources/http/interceptor/logging_interceptor.dart';
 import 'package:networks_sdk/src/data/datasources/http/interceptor/retry_interceptor.dart';
 import 'package:networks_sdk/src/domain/entities/api_error.dart';
 import 'package:networks_sdk/src/presentation/wiring/api_config.dart';
 
 /// REST API 客户端
-/// 基于 Dio，提供 `executeRequest<T>` 唯一入口
+/// 基于 Dio，提供请求执行入口
+///
+/// 拦截器链顺序：Auth → Encryption → 自定义 → Retry → Logging
 ///
 /// 使用方式：
 /// ```dart
@@ -28,9 +31,10 @@ class ApiClient {
       receiveTimeout: const Duration(seconds: 60),
     );
 
-    // 挂载拦截器（顺序：Auth → 自定义 → Retry → Logging）
+    // 挂载拦截器（顺序：Auth → Encryption → 自定义 → Retry → Logging）
     _dio.interceptors.addAll([
       AuthInterceptor(config),
+      EncryptionInterceptor(config),
       if (additionalInterceptors != null) ...additionalInterceptors,
       RetryInterceptor(config: config, dio: _dio),
       LoggingInterceptor(onLog: config.onLog),
@@ -49,16 +53,16 @@ class ApiClient {
         return const ApiError.timeout();
       case DioExceptionType.connectionError:
         return const ApiError.noNetworkConnection();
+      case DioExceptionType.cancel:
+        return const ApiError.cancelled();
       default:
         if (e.response != null) {
           return ApiError.apiError(
             code: e.response!.statusCode ?? 0,
-            message: e.response!.statusMessage ??
-                e.message ??
-                'Request failed',
+            message: e.response!.statusMessage ?? e.message ?? 'Request failed',
           );
         }
         return ApiError.networkError(e.message ?? 'Network error');
     }
   }
-}
+}

packages/networks_sdk/lib/src/data/datasources/http/interceptor/encryption_interceptor.dart

@@ -0,0 +1,114 @@
+import 'package:dio/dio.dart';
+import 'package:networks_sdk/src/presentation/wiring/api_config.dart';
+
+/// 加密拦截器（预留给 cipher_guard_sdk）
+///
+/// 在拦截器链中位于 Auth 之后、Retry 之前：
+/// `Auth → Encryption → Custom → Retry → Logging`
+///
+/// 回调为 null 时自动跳过，不影响正常请求流程。
+/// 后续 cipher_guard_sdk 接入后，App 层在 ApiConfig 中注入
+/// `onEncryptRequest` / `onDecryptResponse` 即可启用加密。
+///
+/// ## 加密能力
+///
+/// 与简单的 body 加解密不同，本拦截器支持完整的请求改写：
+/// - 路径加密（如 `/api/login` → `/api/hex(encrypt(login))`）
+/// - 请求体加密（Map → base64 字符串）
+/// - Header 注入（X-Token、X-Signature、secret-key 等）
+/// - Content-Type 覆盖（application/json → text/plain）
+///
+/// 加密回调接收原始 path、headers、body，返回 [EncryptedRequest]，
+/// 拦截器根据非 null 字段覆盖请求。
+class EncryptionInterceptor extends Interceptor {
+  final ApiConfig _config;
+
+  EncryptionInterceptor(this._config);
+
+  @override
+  void onRequest(
+    RequestOptions options,
+    RequestInterceptorHandler handler,
+  ) async {
+    final encrypt = _config.onEncryptRequest;
+    if (encrypt == null) {
+      handler.next(options);
+      return;
+    }
+
+    try {
+      // 收集当前 headers（转为 Map<String, String>）
+      final currentHeaders = <String, String>{};
+      options.headers.forEach((key, value) {
+        if (value != null) currentHeaders[key] = value.toString();
+      });
+
+      final result = await encrypt(options.path, currentHeaders, options.data);
+
+      // 根据非 null 字段覆盖请求
+      if (result.path != null) {
+        options.path = result.path!;
+      }
+      if (result.body != null) {
+        options.data = result.body;
+      }
+      if (result.headers != null) {
+        options.headers.addAll(result.headers!);
+      }
+      if (result.contentType != null) {
+        options.contentType = result.contentType;
+      }
+
+      _config.onLog?.call(
+        'Request encrypted: ${options.path}',
+        tag: 'Encryption',
+      );
+
+      handler.next(options);
+    } catch (e) {
+      _config.onLog?.call('Request encryption failed: $e', tag: 'Encryption');
+      handler.reject(
+        DioException(
+          requestOptions: options,
+          message: 'Request encryption failed: $e',
+        ),
+      );
+    }
+  }
+
+  @override
+  void onResponse(Response response, ResponseInterceptorHandler handler) async {
+    final decrypt = _config.onDecryptResponse;
+    if (decrypt == null) {
+      handler.next(response);
+      return;
+    }
+
+    // 跳过 null 响应
+    if (response.data == null) {
+      handler.next(response);
+      return;
+    }
+
+    try {
+      final decrypted = await decrypt(response.data as Object);
+      response.data = decrypted;
+
+      _config.onLog?.call(
+        'Response decrypted: ${response.requestOptions.path}',
+        tag: 'Encryption',
+      );
+
+      handler.next(response);
+    } catch (e) {
+      _config.onLog?.call('Response decryption failed: $e', tag: 'Encryption');
+      handler.reject(
+        DioException(
+          requestOptions: response.requestOptions,
+          response: response,
+          message: 'Response decryption failed: $e',
+        ),
+      );
+    }
+  }
+}

packages/networks_sdk/lib/src/data/datasources/http/interceptor/retry_interceptor.dart

@@ -1,35 +1,41 @@
-import 'dart:async';
 import 'dart:math';
 
 import 'package:dio/dio.dart';
+import 'package:networks_sdk/src/data/datasources/http/token_refresh_manager.dart';
 import 'package:networks_sdk/src/presentation/wiring/api_config.dart';
 
-
 /// 重试拦截器
 ///
 /// 两层重试机制：
 ///
 /// 1. **Token 刷新重试**（onResponse）
-///    检测 Token 过期响应 → 触发刷新回调 → 用新 Token 重试原请求
+///    检测 Token 过期响应 → 触发 [TokenRefreshManager] → 用新 Token 重试原请求
 ///
 /// 2. **瞬态错误重试**（onError）
 ///    5xx / 超时 / 连接失败 → 指数退避 + jitter → 自动重试
 ///    由 [ApiConfig.maxRetries] 控制（默认 0 = 不启用）
 ///
+/// 另外在 onResponse 中处理强制登出码和业务错误码。
+///
 /// 两层独立运作，可叠加。
 class RetryInterceptor extends Interceptor {
   final ApiConfig config;
   final Dio dio;
-
-  /// Token 刷新锁（防止多个请求同时刷新）
-  bool _isRefreshing = false;
-  Completer<bool>? _refreshCompleter;
+  final TokenRefreshManager _tokenManager;
 
   final _random = Random();
 
-  RetryInterceptor({required this.config, required this.dio});
+  RetryInterceptor({required this.config, required this.dio})
+    : _tokenManager = TokenRefreshManager(
+        onTokenRefresh: config.onTokenRefresh,
+        onLog: config.onLog,
+        timeout: config.tokenRefreshTimeout,
+        reuseWindow: config.tokenReuseWindow,
+        onGetTokenExpiry: config.onGetTokenExpiry,
+        proactiveRefreshThreshold: config.proactiveRefreshThreshold,
+      );
 
-  // ── Token 刷新重试 ────────────────────────────────────────────────────────
+  // ── 响应处理（Token 过期 / 强制登出 / 业务错误码）──────────────────────
 
   @override
   void onResponse(Response response, ResponseInterceptorHandler handler) {
@@ -40,13 +46,12 @@ class RetryInterceptor extends Interceptor {
 
     final data = response.data as Map<String, dynamic>;
     final code = _parseCode(data['code']);
+    final message = data['message'] as String? ?? '';
+    final requestPath = response.requestOptions.path;
 
     // 检查强制登出
     if (config.forceLogoutCodes.contains(code)) {
-      config.onLog?.call(
-        'Force logout detected (code: $code)',
-        tag: 'Network',
-      );
+      config.onLog?.call('Force logout detected (code: $code)', tag: 'Network');
       config.onForceLogout?.call();
       handler.reject(
         DioException(
@@ -58,8 +63,9 @@ class RetryInterceptor extends Interceptor {
       return;
     }
 
-    // 检查 Token 过期
-    if (config.tokenExpiredCodes.contains(code)) {
+    // 检查 Token 过期（跳过已标记为 token 重试的请求，防止递归）
+    if (config.tokenExpiredCodes.contains(code) &&
+        response.requestOptions.extra['_isTokenRetry'] != true) {
       config.onLog?.call(
         'Token expired (code: $code), refreshing...',
         tag: 'Network',
@@ -68,17 +74,27 @@ class RetryInterceptor extends Interceptor {
       return;
     }
 
+    // 业务错误码拦截：非 0 且不在特殊码集合中
+    if (code != 0 && config.onBusinessError != null) {
+      final handled = config.onBusinessError!(code, message, requestPath);
+      if (handled) {
+        // App 层已处理，正常传递响应
+        handler.next(response);
+        return;
+      }
+    }
+
     handler.next(response);
   }
 
   /// 处理 Token 过期：刷新 + 重试
   Future<void> _handleTokenExpired(
-      Response response,
-      ResponseInterceptorHandler handler,
-      ) async {
-    final refreshSuccess = await _refreshToken();
+    Response response,
+    ResponseInterceptorHandler handler,
+  ) async {
+    final newToken = await _tokenManager.refreshIfNeeded();
 
-    if (!refreshSuccess) {
+    if (newToken == null) {
       config.onLog?.call('Token refresh failed', tag: 'Network');
       config.onForceLogout?.call();
       handler.reject(
@@ -91,12 +107,14 @@ class RetryInterceptor extends Interceptor {
       return;
     }
 
-    // 刷新成功，用新 token 重试原请求
+    // 刷新成功，更新 config 并用新 token 重试原请求
+    config.updateToken(newToken);
     config.onLog?.call('Token refreshed, retrying...', tag: 'Network');
     try {
       final options = response.requestOptions;
-      // 更新 header 中的 token
-      options.headers['token'] = config.token;
+      options.headers['token'] = newToken;
+      // 标记为 token 重试请求，防止重试后再次进入 _handleTokenExpired 造成递归
+      options.extra['_isTokenRetry'] = true;
 
       final retryResponse = await dio.fetch(options);
       handler.resolve(retryResponse);
@@ -105,41 +123,6 @@ class RetryInterceptor extends Interceptor {
     }
   }
 
-  /// Token 刷新（串行锁）
-  /// 多个请求同时过期时，只刷新一次，其余等待
-  Future<bool> _refreshToken() async {
-    if (_isRefreshing) {
-      // 等待正在进行的刷新
-      return _refreshCompleter?.future ?? Future.value(false);
-    }
-
-    _isRefreshing = true;
-    _refreshCompleter = Completer<bool>();
-
-    try {
-      if (config.onTokenRefresh == null) {
-        _refreshCompleter!.complete(false);
-        return false;
-      }
-
-      final newToken = await config.onTokenRefresh!();
-      final success = newToken != null;
-
-      if (success) {
-        config.updateToken(newToken);
-      }
-
-      _refreshCompleter!.complete(success);
-      return success;
-    } catch (e) {
-      _refreshCompleter!.complete(false);
-      return false;
-    } finally {
-      _isRefreshing = false;
-      _refreshCompleter = null;
-    }
-  }
-
   // ── 瞬态错误重试（指数退避 + jitter）────────────────────────────────────
 
   @override
@@ -162,7 +145,7 @@ class RetryInterceptor extends Interceptor {
     final delayMs = _backoffDelay(attempt);
     config.onLog?.call(
       'Transient error, retry ${attempt + 1}/${config.maxRetries} '
-          'in ${delayMs}ms: ${options.path}',
+      'in ${delayMs}ms: ${options.path}',
       tag: 'Retry',
     );
 
@@ -184,7 +167,7 @@ class RetryInterceptor extends Interceptor {
       case DioExceptionType.connectionError:
         return true;
       case DioExceptionType.badResponse:
-      // 5xx 服务端错误可重试
+        // 5xx 服务端错误可重试
         final statusCode = err.response?.statusCode;
         return statusCode != null && statusCode >= 500;
       default:
@@ -198,7 +181,9 @@ class RetryInterceptor extends Interceptor {
   int _backoffDelay(int attempt) {
     final baseMs = config.retryBaseDelay.inMilliseconds;
     final exponentialMs = min(baseMs * pow(2, attempt).toInt(), 30000);
-    final jitterMs = _random.nextInt((exponentialMs * 0.25).toInt().clamp(1, 7500));
+    final jitterMs = _random.nextInt(
+      (exponentialMs * 0.25).toInt().clamp(1, 7500),
+    );
     return exponentialMs + jitterMs;
   }
 

packages/networks_sdk/lib/src/data/datasources/http/token_refresh_manager.dart

@@ -0,0 +1,152 @@
+import 'dart:async';
+
+import 'package:networks_sdk/src/presentation/wiring/network_callbacks.dart';
+
+/// Token 刷新管理器
+///
+/// 两种刷新模式：
+///
+/// 1. **被动刷新**（[refreshIfNeeded]）— 拦截器检测到 token 过期后调用
+/// 2. **主动刷新**（[proactivelyRefreshIfNeeded]）— 解析 JWT exp，
+///    距过期不足阈值时提前刷新，避免带过期 token 发请求
+///
+/// 两种模式共享串行锁和时间窗口保护：
+/// - **串行锁** — 同一时刻只执行一次刷新，其余请求等待同一 Completer
+/// - **时间窗口** — 刷新成功后 [reuseWindow] 内再次调用直接返回缓存 token
+/// - **超时保护** — 刷新回调超过 [timeout] 自动失败，防止死锁
+class TokenRefreshManager {
+  final OnTokenRefresh? onTokenRefresh;
+  final OnLog? onLog;
+
+  /// 刷新超时时间（防止 onTokenRefresh 卡住导致所有请求阻塞）
+  final Duration timeout;
+
+  /// 时间窗口：刷新成功后此时间内再次调用直接返回缓存 token
+  final Duration reuseWindow;
+
+  /// Token 过期时间解析（App 层注入 JWT exp 解析逻辑）
+  final OnGetTokenExpiry? onGetTokenExpiry;
+
+  /// 主动刷新阈值：距过期不足此时间时提前刷新（默认 1 小时）
+  final Duration proactiveRefreshThreshold;
+
+  /// 当前正在进行的刷新任务（null = 空闲）
+  Completer<String?>? _completer;
+
+  /// 上次刷新成功的时间戳
+  DateTime? _lastRefreshTime;
+
+  /// 上次刷新成功的 token（时间窗口内复用）
+  String? _lastToken;
+
+  TokenRefreshManager({
+    this.onTokenRefresh,
+    this.onLog,
+    this.timeout = const Duration(seconds: 10),
+    this.reuseWindow = const Duration(seconds: 3),
+    this.onGetTokenExpiry,
+    this.proactiveRefreshThreshold = const Duration(hours: 1),
+  });
+
+  /// 执行 token 刷新（如果需要）
+  ///
+  /// 返回新 token（刷新成功或在时间窗口内），
+  /// 返回 null = 刷新失败或超时。
+  Future<String?> refreshIfNeeded() async {
+    // 1. 时间窗口：最近刷新过且未超时 → 直接返回缓存的 token
+    if (_isWithinReuseWindow()) {
+      _log('Token refreshed recently, reusing');
+      return _lastToken;
+    }
+
+    // 2. 有正在进行的刷新 → 等待同一 Completer
+    final existing = _completer;
+    if (existing != null) {
+      _log('Waiting for ongoing token refresh');
+      return existing.future;
+    }
+
+    // 3. 发起新的刷新
+    if (onTokenRefresh == null) {
+      _log('No onTokenRefresh callback configured');
+      return null;
+    }
+
+    final completer = Completer<String?>();
+    _completer = completer;
+
+    try {
+      final newToken = await onTokenRefresh!().timeout(
+        timeout,
+        onTimeout: () {
+          _log('Token refresh timed out after ${timeout.inSeconds}s');
+          return null;
+        },
+      );
+
+      final success = newToken != null && newToken.isNotEmpty;
+
+      if (success) {
+        _lastRefreshTime = DateTime.now();
+        _lastToken = newToken;
+        _log('Token refreshed successfully');
+      } else {
+        _log('Token refresh failed (null or empty token)');
+      }
+
+      // 先 complete 再清引用，确保等待者能拿到结果
+      completer.complete(success ? newToken : null);
+      return success ? newToken : null;
+    } catch (e) {
+      _log('Token refresh error: $e');
+      completer.complete(null);
+      return null;
+    } finally {
+      // 清理引用（Completer 已 complete，等待者不受影响）
+      _completer = null;
+    }
+  }
+
+  /// 检查 token 是否即将过期，是则主动刷新
+  ///
+  /// 解析 [currentToken] 的过期时间，距过期不足 [proactiveRefreshThreshold]
+  /// 时调用 [refreshIfNeeded] 刷新。复用串行锁和超时保护。
+  ///
+  /// 返回新 token（已刷新）或 null（不需要刷新 / 刷新失败 / 无法解析过期时间）。
+  Future<String?> proactivelyRefreshIfNeeded(String? currentToken) async {
+    if (currentToken == null || onGetTokenExpiry == null) return null;
+
+    final expiry = onGetTokenExpiry!(currentToken);
+    if (expiry == null) return null;
+
+    final remaining = expiry.difference(DateTime.now());
+    if (remaining > proactiveRefreshThreshold) {
+      _log(
+        'Token valid (expires in ${remaining.inMinutes}min), skip proactive refresh',
+      );
+      return null;
+    }
+
+    _log(
+      'Token expiring soon (${remaining.inMinutes}min left), proactively refreshing',
+    );
+    return refreshIfNeeded();
+  }
+
+  /// 重置状态（登出时调用）
+  void reset() {
+    _lastRefreshTime = null;
+    _lastToken = null;
+    // 不清理 _completer，让正在等待的请求正常结束
+  }
+
+  bool _isWithinReuseWindow() {
+    final lastTime = _lastRefreshTime;
+    if (lastTime == null) return false;
+    return DateTime.now().difference(lastTime) < reuseWindow;
+  }
+
+  void _log(String message) {
+    onLog?.call(message, tag: 'TokenRefresh');
+  }
+}

packages/networks_sdk/lib/src/data/datasources/networks_sdk_method_channel_datasource.dart

@@ -1,14 +1,25 @@
+import 'dart:io';
+
 import 'package:dio/dio.dart';
 import 'package:networks_sdk/src/data/datasources/http/api_client.dart';
 import 'package:networks_sdk/src/data/dto/api_requestable.dart';
 import 'package:networks_sdk/src/domain/entities/api_error.dart';
 import 'package:networks_sdk/src/domain/entities/api_request_type.dart';
 import 'package:networks_sdk/src/presentation/wiring/api_config.dart';
+import 'package:networks_sdk/src/presentation/wiring/network_callbacks.dart';
 import '../../../networks_sdk_platform_interface.dart';
 import '../../domain/entities/http_method.dart';
 
-class NetworksSdkMethodChannelDataSource 
-{
+/// 网络层数据源
+///
+/// 封装 [ApiClient]，提供两种请求入口：
+/// - [executeRequest] — 统一请求入口（标准 / Upload / 流式）
+/// - [executeDownload] — 带进度的文件下载（支持断点续传）
+///
+/// 流式（SSE）请求也走 [executeRequest]，由业务 Request 类 override
+/// `decodeResponse` 处理 SSE 解析。SDK 内部根据
+/// `requestType == ApiRequestType.stream` 自动切换 `ResponseType.plain`。
+class NetworksSdkMethodChannelDataSource {
   final NetworksSdkPlatform platform;
 
   late ApiClient apiClient;
@@ -16,44 +27,51 @@ class NetworksSdkMethodChannelDataSource
   NetworksSdkMethodChannelDataSource(this.platform);
 
   Future<String?> getPlatformVersion() async {
-    return await getPlatformVersion();
+    return await platform.getPlatformVersion();
   }
 
-  void initialize(ApiConfig apiConfig){
+  void initialize(ApiConfig apiConfig) {
     apiClient = ApiClient(config: apiConfig);
   }
 
-  /// 执行 API 请求 — 唯一入口
+  // ══════════════════════════════════════════════════════════════════════════
+  //  统一请求入口
+  // ══════════════════════════════════════════════════════════════════════════
+
+  /// 执行 API 请求 — 统一入口
   ///
-  /// 流程：网络前置检查 → 构建 URL → 设置元数据 → 执行请求 → 解码响应 → 错误映射
-  /// 拦截器负责：header 注入、Token 刷新重试、日志
+  /// 支持三种请求类型，由 `request.requestType` 控制行为：
+  /// - `request` / `login` — 标准 JSON 请求
+  /// - `upload` — 文件上传（FormData / 二进制）
+  /// - `stream` — SSE / chunked，内部用 `ResponseType.plain` 获取原始文本，
+  ///   由业务 Request 类 override `decodeResponse` 处理 SSE 解析
+  ///
+  /// 流程：网络前置检查 → 构建 URL → 设置元数据 → 执行请求
+  /// → 响应变换（可选，stream 类型跳过）→ 解码响应 → 错误映射
+  ///
+  /// 拦截器负责：header 注入、加密/解密、Token 刷新重试、业务错误拦截、日志
   ///
   /// Upload 类型支持两种模式：
   /// - 自有后端上传：path 为相对路径，自动拼接 baseURL
   /// - S3 presigned URL：path 以 http 开头，直接使用全路径
-  Future<T?> executeRequest<T>(ApiRequestable<T> request) async {
-    // 前置检查：网络不可用时直接抛错，避免无效请求
-    if (apiClient.config.onCheckNetworkAvailable != null) {
-      final available = await apiClient.config.onCheckNetworkAvailable!();
-      if (!available) {
-        apiClient.config.onLog?.call(
-          'Network unavailable, abort request: ${request.path}',
-          tag: 'ApiClient',
-        );
-        throw const ApiError.noNetworkConnection();
-      }
-    }
+  Future<T?> executeRequest<T>(
+    ApiRequestable<T> request, {
+    CancelToken? cancelToken,
+  }) async {
+    await _checkNetwork(request.path);
 
     try {
-      // Upload 且 path 以 http 开头 → 直接用全路径（S3 presigned URL）
-      // 否则 → 拼接 baseURL
       final isUpload = request.requestType == ApiRequestType.upload;
+      final isStream = request.requestType == ApiRequestType.stream;
       final path = request.path;
-      final url = (isUpload && path.startsWith('http')) ? path : '${apiClient.config.baseURL}$path';
+      final url = (isUpload && path.startsWith('http'))
+          ? path
+          : '${apiClient.config.baseURL}$path';
 
-      // 将请求元数据写入 extra，供拦截器读取
       final options = Options(
         method: request.method.value,
+        // 流式请求用 plain，Dio 返回原始文本，由 decodeResponse 解析 SSE
+        responseType: isStream ? ResponseType.plain : null,
         extra: {
           'requestType': request.requestType,
           'includeToken': request.includeToken,
@@ -62,19 +80,22 @@ class NetworksSdkMethodChannelDataSource
       );
 
       // 访问 parameters 触发代码生成器的 fromJson 注册
-      // （@ApiRequest 生成的 mixin 在 parameters getter 中注册响应类型）
       final params = request.parameters;
 
-      // GET → queryParameters；POST/PUT/DELETE/PATCH → JSON body；Upload → uploadData
       final isGet = request.method == HttpMethod.get;
       final response = await apiClient.dio.request(
         url,
         data: isUpload ? request.uploadData : (isGet ? null : params),
         queryParameters: isGet ? params : null,
         options: options,
+        cancelToken: cancelToken,
       );
 
-      // 解码响应（Upload 类型通常需要 override decodeResponse）
+      // 响应变换：stream 类型由 decodeResponse 自行处理，不做变换
+      if (!isStream) {
+        _applyResponseTransform(response);
+      }
+
       return request.decodeResponse(response);
     } on DioException catch (e) {
       throw apiClient.mapDioError(e);
@@ -85,4 +106,162 @@ class NetworksSdkMethodChannelDataSource
     }
   }
 
+  // ══════════════════════════════════════════════════════════════════════════
+  //  文件下载
+  // ══════════════════════════════════════════════════════════════════════════
+
+  /// 下载文件到本地路径
+  ///
+  /// 支持进度回调和断点续传（通过 HTTP Range header 实现）。
+  ///
+  /// 非续传模式直接用 Dio.download（高效，内部流式写入）。
+  /// 续传模式用 stream + FileMode.append，因为 Dio.download 始终从
+  /// 文件头部写入，无法正确追加到已下载部分之后。
+  ///
+  /// [url] — 下载 URL（完整路径或相对路径，相对路径自动拼接 baseURL）
+  /// [savePath] — 本地保存路径
+  /// [onProgress] — 下载进度回调
+  /// [cancelToken] — 取消令牌
+  /// [resume] — 是否断点续传（文件已存在时从断点继续下载）
+  /// [headers] — 额外请求头
+  Future<void> executeDownload({
+    required String url,
+    required String savePath,
+    OnDownloadProgress? onProgress,
+    CancelToken? cancelToken,
+    bool resume = false,
+    Map<String, String>? headers,
+  }) async {
+    await _checkNetwork(url);
+
+    try {
+      final fullUrl = url.startsWith('http')
+          ? url
+          : '${apiClient.config.baseURL}$url';
+
+      final extraHeaders = <String, String>{};
+      if (headers != null) extraHeaders.addAll(headers);
+
+      // 断点续传：读取已下载部分的大小，设置 Range header
+      int startBytes = 0;
+      if (resume) {
+        final file = File(savePath);
+        if (file.existsSync()) {
+          startBytes = file.lengthSync();
+          extraHeaders['Range'] = 'bytes=$startBytes-';
+        }
+      }
+
+      if (resume && startBytes > 0) {
+        // 续传模式：stream + append，确保新数据追加到文件末尾
+        await _downloadWithResume(
+          url: fullUrl,
+          savePath: savePath,
+          startBytes: startBytes,
+          headers: extraHeaders,
+          onProgress: onProgress,
+          cancelToken: cancelToken,
+        );
+      } else {
+        // 普通下载：Dio.download（高效，内部流式写入）
+        await apiClient.dio.download(
+          fullUrl,
+          savePath,
+          cancelToken: cancelToken,
+          deleteOnError: true,
+          options: Options(
+            headers: extraHeaders.isEmpty ? null : extraHeaders,
+            extra: {
+              'requestType': ApiRequestType.download,
+              'includeToken': true,
+            },
+          ),
+          onReceiveProgress: onProgress != null
+              ? (received, total) => onProgress(received, total)
+              : null,
+        );
+      }
+    } on DioException catch (e) {
+      throw apiClient.mapDioError(e);
+    } on ApiError {
+      rethrow;
+    } catch (e) {
+      throw ApiError.unknown(e.toString());
+    }
+  }
+
+  /// 断点续传下载：stream 响应 + FileMode.append
+  ///
+  /// Dio.download 内部用 FileMode.write（从头覆盖），无法正确续传。
+  /// 这里手动读流并追加写入文件。
+  Future<void> _downloadWithResume({
+    required String url,
+    required String savePath,
+    required int startBytes,
+    required Map<String, String> headers,
+    OnDownloadProgress? onProgress,
+    CancelToken? cancelToken,
+  }) async {
+    final response = await apiClient.dio.get<ResponseBody>(
+      url,
+      cancelToken: cancelToken,
+      options: Options(
+        responseType: ResponseType.stream,
+        headers: headers.isEmpty ? null : headers,
+        extra: {'requestType': ApiRequestType.download, 'includeToken': true},
+      ),
+    );
+
+    final stream = response.data?.stream;
+    if (stream == null) return;
+
+    // Content-Length 是本次传输量（不含已下载部分）
+    final contentLength =
+        int.tryParse(response.headers.value('content-length') ?? '') ?? -1;
+    final totalBytes = contentLength > 0 ? contentLength + startBytes : -1;
+
+    final file = File(savePath);
+    final raf = file.openSync(mode: FileMode.writeOnlyAppend);
+    int received = startBytes;
+
+    try {
+      await for (final chunk in stream) {
+        raf.writeFromSync(chunk);
+        received += chunk.length;
+        onProgress?.call(received, totalBytes);
+      }
+    } finally {
+      raf.closeSync();
+    }
+  }
+
+  // ══════════════════════════════════════════════════════════════════════════
+  //  内部辅助
+  // ══════════════════════════════════════════════════════════════════════════
+
+  /// 网络前置检查，不可用时直接抛 [ApiError.noNetworkConnection]
+  Future<void> _checkNetwork(String path) async {
+    if (apiClient.config.onCheckNetworkAvailable != null) {
+      final available = await apiClient.config.onCheckNetworkAvailable!();
+      if (!available) {
+        apiClient.config.onLog?.call(
+          'Network unavailable, abort request: $path',
+          tag: 'ApiClient',
+        );
+        throw const ApiError.noNetworkConnection();
+      }
+    }
+  }
+
+  /// 应用响应变换（如果 App 层注入了 onTransformResponse）
+  void _applyResponseTransform(Response response) {
+    final transform = apiClient.config.onTransformResponse;
+    if (transform == null) return;
+    if (response.data is! Map<String, dynamic>) return;
+
+    final transformed = transform(response.data as Map<String, dynamic>);
+    if (transformed != null) {
+      response.data = transformed;
+    }
+  }
 }

packages/networks_sdk/lib/src/data/datasources/socket/socket_client.dart

@@ -1,6 +1,8 @@
 import 'dart:async';
 import 'dart:convert';
+import 'dart:io' as io;
 import 'dart:math';
+import 'dart:typed_data';
 
 import 'package:networks_sdk/networks_sdk.dart';
 import 'package:web_socket_channel/io.dart';
@@ -9,10 +11,12 @@ import 'package:web_socket_channel/web_socket_channel.dart';
 /// WebSocket 长连接客户端
 ///
 /// 提供：
-/// - 连接 / 断连 / 自动重连（指数退避）
+/// - 连接 / 断连 / 自动重连（指数退避，支持无限重连）
 /// - 双层心跳（底层 ping + 应用层 heartbeat）
-/// - Stream 输出（消息、连接状态、错误）
+/// - Stream 输出（JSON 消息、原始字符串、二进制、连接状态、错误）
 /// - 生命周期感知（前后台切换）
+/// - Token 热更新（不断连）
+/// - 消息加密/解密钩子（预留给 cipher_guard_sdk）
 ///
 /// ## 使用方式
 ///
@@ -28,6 +32,9 @@ import 'package:web_socket_channel/web_socket_channel.dart';
 /// // 发消息
 /// await client.send({'type': 'chat', 'data': {...}});
 ///
+/// // Token 热更新（不断连，下次重连自动使用新 token）
+/// client.updateToken('new_token');
+///
 /// // 断连
 /// await client.disconnect();
 /// ```
@@ -56,8 +63,9 @@ class SocketClient {
   // ── Stream Controllers ──
   final _messageController = StreamController<Map<String, dynamic>>.broadcast();
   final _rawMessageController = StreamController<String>.broadcast();
+  final _binaryMessageController = StreamController<Uint8List>.broadcast();
   final _connectionStateController =
-  StreamController<SocketConnectionState>.broadcast();
+      StreamController<SocketConnectionState>.broadcast();
   final _errorController = StreamController<SocketError>.broadcast();
 
   SocketClient({required this.config});
@@ -93,12 +101,20 @@ class SocketClient {
   }
 
   /// 当前是否已连接
-  bool get isConnected =>
-      _connectionState == SocketConnectionState.connected;
+  bool get isConnected => _connectionState == SocketConnectionState.connected;
 
   /// 当前连接状态
   SocketConnectionState get connectionState => _connectionState;
 
+  /// Token 热更新（不断开连接）
+  ///
+  /// 仅更新内部持有的 token，下次重连时自动使用新 token。
+  /// 适用于 token 刷新后同步到 WebSocket 的场景。
+  void updateToken(String token) {
+    _currentToken = token;
+    _log('Token updated (no reconnect)');
+  }
+
   // ══════════════════════════════════════════════════════════════════════════
   //  公开 API — 发送
   // ══════════════════════════════════════════════════════════════════════════
@@ -109,6 +125,8 @@ class SocketClient {
   }
 
   /// 发送原始字符串
+  ///
+  /// 如果配置了 [SocketConfig.onEncryptMessage]，发送前自动加密。
   Future<bool> sendString(String message) async {
     if (!isConnected || _channel == null) {
       _emitError(SocketError.sendFailed('Not connected'));
@@ -116,7 +134,27 @@ class SocketClient {
     }
 
     try {
-      _channel!.sink.add(message);
+      String payload = message;
+      if (config.onEncryptMessage != null) {
+        payload = await config.onEncryptMessage!(message);
+      }
+      _channel!.sink.add(payload);
+      return true;
+    } catch (e) {
+      _emitError(SocketError.sendFailed(e.toString()));
+      return false;
+    }
+  }
+
+  /// 发送二进制数据
+  Future<bool> sendBytes(List<int> bytes) async {
+    if (!isConnected || _channel == null) {
+      _emitError(SocketError.sendFailed('Not connected'));
+      return false;
+    }
+
+    try {
+      _channel!.sink.add(bytes);
       return true;
     } catch (e) {
       _emitError(SocketError.sendFailed(e.toString()));
@@ -134,6 +172,9 @@ class SocketClient {
   /// 原始字符串消息流（JSON 解析失败的也走这里）
   Stream<String> get rawMessageStream => _rawMessageController.stream;
 
+  /// 二进制消息流
+  Stream<Uint8List> get binaryMessageStream => _binaryMessageController.stream;
+
   /// 连接状态变化流
   Stream<SocketConnectionState> get connectionStateStream =>
       _connectionStateController.stream;
@@ -171,6 +212,7 @@ class SocketClient {
     await _doDisconnect(reason: 'Dispose');
     await _messageController.close();
     await _rawMessageController.close();
+    await _binaryMessageController.close();
     await _connectionStateController.close();
     await _errorController.close();
   }
@@ -197,24 +239,36 @@ class SocketClient {
     _log('Connecting to $url');
 
     try {
-      // 构建最终 URL（拼接 token）
-      final connectUri = _currentToken != null
-          ? uri.replace(
-        queryParameters: {
-          ...uri.queryParameters,
-          'token': _currentToken!,
-        },
-      )
-          : uri;
+      // 构建最终连接 URL
+      //
+      // 有 onBuildConnectUrl 回调时，App 层完全控制 URL（路径加密、
+      // token 加密、添加 cipher 参数等）。
+      // 无回调时使用默认行为：URL 后追加 ?token=xxx。
+      final String connectUrlString;
 
-      // 创建 WebSocket 连接
-      _channel = IOWebSocketChannel.connect(
-        connectUri,
-        pingInterval: config.pingInterval,
-      );
+      if (config.onBuildConnectUrl != null) {
+        connectUrlString = config.onBuildConnectUrl!(url, _currentToken);
+      } else {
+        final connectUri = _currentToken != null
+            ? uri.replace(
+                queryParameters: {
+                  ...uri.queryParameters,
+                  'token': _currentToken!,
+                },
+              )
+            : uri;
+        connectUrlString = connectUri.toString();
+      }
 
-      // 等待连接就绪
-      await _channel!.ready.timeout(config.connectTimeout);
+      // 创建 WebSocket 连接（通过 dart:io 支持压缩选项）
+      final rawSocket = await io.WebSocket.connect(
+        connectUrlString,
+        compression: config.enableCompression
+            ? io.CompressionOptions.compressionDefault
+            : io.CompressionOptions.compressionOff,
+      ).timeout(config.connectTimeout);
+      rawSocket.pingInterval = config.pingInterval;
+      _channel = IOWebSocketChannel(rawSocket);
 
       _log('Connected');
       _updateConnectionState(SocketConnectionState.connected);
@@ -270,26 +324,45 @@ class SocketClient {
   //  内部 — 消息处理
   // ══════════════════════════════════════════════════════════════════════════
 
-  void _handleMessage(dynamic data) {
+  void _handleMessage(dynamic data) async {
+    // 二进制消息
+    if (data is List<int>) {
+      _binaryMessageController.add(
+        data is Uint8List ? data : Uint8List.fromList(data),
+      );
+      return;
+    }
+
     if (data is! String) {
-      // 非字符串消息（如二进制），走 rawMessageStream
       _rawMessageController.add(data.toString());
       return;
     }
 
-    // 检查 pong 心跳回复
-    if (data == 'pong') {
+    // 解密（如果配置了解密回调）
+    String text = data;
+    if (config.onDecryptMessage != null) {
+      try {
+        text = await config.onDecryptMessage!(data);
+      } catch (e) {
+        _log('Message decryption failed: $e');
+        _rawMessageController.add(data);
+        return;
+      }
+    }
+
+    // 检查 pong 心跳回复（解密后检查，加密场景下也能正确匹配）
+    if (text == 'pong') {
       _onPongReceived();
       return;
     }
 
     // 尝试 JSON 解析
     try {
-      final json = jsonDecode(data) as Map<String, dynamic>;
+      final json = jsonDecode(text) as Map<String, dynamic>;
       _messageController.add(json);
     } catch (_) {
       // JSON 解析失败，走原始消息流
-      _rawMessageController.add(data);
+      _rawMessageController.add(text);
     }
   }
 
@@ -328,11 +401,21 @@ class SocketClient {
     _waitingForPong = false;
   }
 
-  void _sendPing() {
+  void _sendPing() async {
     if (_waitingForPong) return;
 
     _waitingForPong = true;
-    _channel?.sink.add('ping');
+
+    // 加密场景下 ping 也要加密，与 pong 解密对称
+    String pingPayload = 'ping';
+    if (config.onEncryptMessage != null) {
+      try {
+        pingPayload = await config.onEncryptMessage!('ping');
+      } catch (e) {
+        _log('Ping encryption failed: $e');
+      }
+    }
+    _channel?.sink.add(pingPayload);
 
     // 启动 pong 超时计时器
     _pongTimeoutTimer = Timer(config.pongTimeout, () {
@@ -360,7 +443,9 @@ class SocketClient {
     if (_manualDisconnect || !config.autoReconnect || _isBackground) return;
     if (_connectionState == SocketConnectionState.reconnecting) return;
 
-    if (_reconnectAttempts >= config.maxReconnectAttempts) {
+    // 非无限重连模式下检查重连次数上限
+    if (!config.unlimitedReconnect &&
+        _reconnectAttempts >= config.maxReconnectAttempts) {
       _log('Max reconnect attempts reached ($_reconnectAttempts)');
       _reconnectAttempts = 0;
       return;
@@ -375,11 +460,16 @@ class SocketClient {
       pow(2, _reconnectAttempts).toInt() * 1000,
       config.maxReconnectDelay.inMilliseconds,
     );
-    final jitterMs = _random.nextInt((baseDelayMs * 0.25).toInt().clamp(1, 7500));
+    final jitterMs = _random.nextInt(
+      (baseDelayMs * 0.25).toInt().clamp(1, 7500),
+    );
     final delay = Duration(milliseconds: baseDelayMs + jitterMs);
 
-    _log('Reconnecting in ${delay.inMilliseconds}ms '
-        '(attempt $_reconnectAttempts/${config.maxReconnectAttempts})');
+    final attemptsInfo = config.unlimitedReconnect
+        ? 'attempt $_reconnectAttempts/unlimited'
+        : 'attempt $_reconnectAttempts/${config.maxReconnectAttempts}';
+
+    _log('Reconnecting in ${delay.inMilliseconds}ms ($attemptsInfo)');
 
     _reconnectTimer = Timer(delay, () async {
       // 重连前检查网络
@@ -393,6 +483,17 @@ class SocketClient {
         }
       }
 
+      // 重连前回调（App 层刷新即将过期的 token 等）
+      if (config.onBeforeReconnect != null) {
+        try {
+          await config.onBeforeReconnect!();
+        } catch (e) {
+          _log('onBeforeReconnect failed: $e, skip this reconnect');
+          _startReconnect();
+          return;
+        }
+      }
+
       _doConnect();
     });
   }

packages/networks_sdk/lib/src/data/repositories/networks_messaging_repository_impl.dart

@@ -1,10 +1,12 @@
+import 'dart:typed_data';
+
 import 'package:networks_sdk/src/data/datasources/socket/socket_client.dart';
 import 'package:networks_sdk/src/domain/entities/socket_connection_state.dart';
 import 'package:networks_sdk/src/domain/entities/socket_error.dart';
 import 'package:networks_sdk/src/domain/repositories/networks_messaging_repository.dart';
 import 'package:networks_sdk/src/presentation/wiring/socket_config.dart';
 
-/// Messaging Repository Implementation (Data)
+/// [NetworksMessagingRepository] 的实现，透传给 [SocketClient]
 class NetworksMessagingRepositoryImpl implements NetworksMessagingRepository {
   SocketClient? _socketClient;
   bool _isInitialized = false;
@@ -47,6 +49,12 @@ class NetworksMessagingRepositoryImpl implements NetworksMessagingRepository {
     return _socketClient!.connectionState;
   }
 
+  @override
+  void updateToken(String token) {
+    _checkInitialized();
+    _socketClient!.updateToken(token);
+  }
+
   @override
   Future<bool> send(Map<String, dynamic> message) {
     _checkInitialized();
@@ -59,6 +67,12 @@ class NetworksMessagingRepositoryImpl implements NetworksMessagingRepository {
     return _socketClient!.sendString(message);
   }
 
+  @override
+  Future<bool> sendBytes(List<int> bytes) {
+    _checkInitialized();
+    return _socketClient!.sendBytes(bytes);
+  }
+
   @override
   Stream<Map<String, dynamic>> get messageStream {
     _checkInitialized();
@@ -71,6 +85,12 @@ class NetworksMessagingRepositoryImpl implements NetworksMessagingRepository {
     return _socketClient!.rawMessageStream;
   }
 
+  @override
+  Stream<Uint8List> get binaryMessageStream {
+    _checkInitialized();
+    return _socketClient!.binaryMessageStream;
+  }
+
   @override
   Stream<SocketConnectionState> get connectionStateStream {
     _checkInitialized();
@@ -104,4 +124,3 @@ class NetworksMessagingRepositoryImpl implements NetworksMessagingRepository {
     _isInitialized = false;
   }
 }
-

packages/networks_sdk/lib/src/data/repositories/networks_sdk_repository_impl.dart

@@ -1,13 +1,15 @@
-//Repository Impl
+// Repository Impl
 
+import 'package:dio/dio.dart';
 import 'package:networks_sdk/src/data/dto/api_requestable.dart';
 import 'package:networks_sdk/src/presentation/wiring/api_config.dart';
+import 'package:networks_sdk/src/presentation/wiring/network_callbacks.dart';
 
 import '../../domain/repositories/networks_sdk_repository.dart';
 import '../datasources/networks_sdk_method_channel_datasource.dart';
 
-class NetworksSdkRepositoryImpl implements NetworksSdkRepository
-{
+/// [NetworksSdkRepository] 的实现，透传给 [NetworksSdkMethodChannelDataSource]
+class NetworksSdkRepositoryImpl implements NetworksSdkRepository {
   final NetworksSdkMethodChannelDataSource _datasource;
 
   const NetworksSdkRepositoryImpl(this._datasource);
@@ -18,12 +20,34 @@ class NetworksSdkRepositoryImpl implements NetworksSdkRepository
   }
 
   @override
-  void initialize(ApiConfig apiConfig){
-     _datasource.initialize(apiConfig);
+  void initialize(ApiConfig apiConfig) {
+    _datasource.initialize(apiConfig);
   }
 
   @override
-  Future<T?> executeRequest<T>(ApiRequestable<T> request) {
-    return _datasource.executeRequest(request);
+  Future<T?> executeRequest<T>(
+    ApiRequestable<T> request, {
+    CancelToken? cancelToken,
+  }) {
+    return _datasource.executeRequest(request, cancelToken: cancelToken);
+  }
+
+  @override
+  Future<void> executeDownload({
+    required String url,
+    required String savePath,
+    OnDownloadProgress? onProgress,
+    CancelToken? cancelToken,
+    bool resume = false,
+    Map<String, String>? headers,
+  }) {
+    return _datasource.executeDownload(
+      url: url,
+      savePath: savePath,
+      onProgress: onProgress,
+      cancelToken: cancelToken,
+      resume: resume,
+      headers: headers,
+    );
   }
 }

packages/networks_sdk/lib/src/domain/entities/api_error.dart

@@ -13,6 +13,9 @@ class ApiError with _$ApiError implements Exception {
     required int code,
     required String message,
   }) = _ApiError;
+
+  /// 请求被 CancelToken 取消
+  const factory ApiError.cancelled() = _Cancelled;
   const factory ApiError.unknown(String? message) = _Unknown;
 }
 
@@ -25,7 +28,8 @@ extension ApiErrorExtension on ApiError {
       networkError: (message) => 'Network error: $message',
       decodingError: (message) => 'Decoding error: $message',
       apiError: (code, message) => message,
+      cancelled: () => 'Request cancelled',
       unknown: (message) => message ?? 'Unknown error',
     );
   }
-}
+}

packages/networks_sdk/lib/src/domain/entities/api_request_type.dart

@@ -8,4 +8,13 @@ enum ApiRequestType {
 
   /// 文件上传（multipart，不序列化 parameters）
   upload,
+
+  /// 流式请求（SSE / chunked）
+  ///
+  /// SDK 内部自动切换 `ResponseType.plain`，Dio 返回原始文本。
+  /// 业务 Request 类 override `decodeResponse` 处理 SSE 解析。
+  stream,
+
+  /// 文件下载（带进度回调，支持断点续传）
+  download,
 }

packages/networks_sdk/lib/src/domain/entities/encrypted_request.dart

@@ -0,0 +1,55 @@
+/// HTTP 请求加密结果
+///
+/// 加密回调返回此对象，[EncryptionInterceptor] 根据非 null 字段覆盖原始请求。
+/// 未设置的字段保持原值不变。
+///
+/// 设计依据：HTTP 加密模式下，加密后需要同时修改：
+/// - 路径（原文 path 加密为 hex 编码）
+/// - 请求体（JSON body 加密为 base64 字符串，不再是 Map）
+/// - Headers（添加 X-Token、X-Signature、secret-key 等加密 header）
+/// - Content-Type（JSON → text/plain）
+///
+/// ```dart
+/// // 加密回调返回示例
+/// EncryptedRequest(
+///   path: '/api/${hexEncode(encrypt(originalPath))}',
+///   body: base64Encode(encrypt(jsonBody)),
+///   headers: {
+///     'X-Token': encryptedToken,
+///     'X-Signature': signature,
+///     'secret-key': clientPublicKey,
+///   },
+///   contentType: 'text/plain',
+/// )
+/// ```
+class EncryptedRequest {
+  /// 加密后的路径
+  ///
+  /// null 表示不修改路径。
+  /// 如需加密，拦截器会用此值替换 `RequestOptions.path`。
+  final String? path;
+
+  /// 加密后的请求体
+  ///
+  /// null 表示不修改 body。
+  /// 类型不限于 Map — 加密后通常是 base64 字符串或 bytes。
+  final Object? body;
+
+  /// 需要添加或覆盖的 headers
+  ///
+  /// null 表示不修改 headers。
+  /// 拦截器会将这些 header 合并到请求中（覆盖同名 header）。
+  final Map<String, String>? headers;
+
+  /// 覆盖 Content-Type
+  ///
+  /// null 表示不修改。加密后通常是 `text/plain`（body 已是字符串，非 JSON）。
+  final String? contentType;
+
+  const EncryptedRequest({
+    this.path,
+    this.body,
+    this.headers,
+    this.contentType,
+  });
+}

packages/networks_sdk/lib/src/domain/repositories/networks_messaging_repository.dart

@@ -1,49 +1,45 @@
+import 'dart:typed_data';
+
 import 'package:networks_sdk/src/domain/entities/socket_connection_state.dart';
 import 'package:networks_sdk/src/domain/entities/socket_error.dart';
 import 'package:networks_sdk/src/presentation/wiring/socket_config.dart';
 
-/// Messaging Repository Interface (Domain)
+/// Messaging Repository 接口
 abstract class NetworksMessagingRepository {
-  /// Initialize with config
   void initialize(SocketConfig config);
 
-  /// Connect to messaging server
   Future<bool> connect(String url, {String? token});
 
-  /// Disconnect from server
   Future<void> disconnect();
 
-  /// Check if connected
   bool get isConnected;
 
-  /// Current connection state
   SocketConnectionState get connectionState;
 
-  /// Send a JSON message
+  /// Token 热更新（不断连）
+  void updateToken(String token);
+
   Future<bool> send(Map<String, dynamic> message);
 
-  /// Send a raw string message
   Future<bool> sendString(String message);
 
-  /// Stream of incoming parsed JSON messages
+  /// 发送二进制数据
+  Future<bool> sendBytes(List<int> bytes);
+
   Stream<Map<String, dynamic>> get messageStream;
 
-  /// Stream of raw string messages
   Stream<String> get rawMessageStream;
 
-  /// Stream of connection state changes
+  /// 二进制消息流
+  Stream<Uint8List> get binaryMessageStream;
+
   Stream<SocketConnectionState> get connectionStateStream;
 
-  /// Stream of errors
   Stream<SocketError> get errorStream;
 
-  /// Called when app enters foreground
   void onEnterForeground();
 
-  /// Called when app enters background
   void onEnterBackground();
 
-  /// Dispose all resources
   Future<void> dispose();
 }
-

packages/networks_sdk/lib/src/domain/repositories/networks_sdk_repository.dart

@@ -1,12 +1,32 @@
 // Repository Interface（Domain）
 
+import 'package:dio/dio.dart';
 import 'package:networks_sdk/src/data/dto/api_requestable.dart';
 import 'package:networks_sdk/src/presentation/wiring/api_config.dart';
+import 'package:networks_sdk/src/presentation/wiring/network_callbacks.dart';
 
+/// 网络层 Repository 接口
+///
+/// 定义两种请求入口：
+/// - [executeRequest] — 统一请求入口（标准 / Upload / 流式）
+/// - [executeDownload] — 带进度的文件下载（支持断点续传）
 abstract class NetworksSdkRepository {
   Future<String?> platformVersion();
 
   void initialize(ApiConfig apiConfig);
 
-  Future<T?> executeRequest<T>(ApiRequestable<T> request);
-}
+  Future<T?> executeRequest<T>(
+    ApiRequestable<T> request, {
+    CancelToken? cancelToken,
+  });
+
+  /// 文件下载（支持进度回调和断点续传）
+  Future<void> executeDownload({
+    required String url,
+    required String savePath,
+    OnDownloadProgress? onProgress,
+    CancelToken? cancelToken,
+    bool resume = false,
+    Map<String, String>? headers,
+  });
+}

packages/networks_sdk/lib/src/presentation/facade/networks_messaging_api.dart

@@ -1,92 +1,75 @@
+import 'dart:typed_data';
+
 import 'package:networks_sdk/src/domain/entities/socket_connection_state.dart';
 import 'package:networks_sdk/src/domain/entities/socket_error.dart';
 import 'package:networks_sdk/src/presentation/wiring/networks_sdk_wiring.dart';
 import 'package:networks_sdk/src/presentation/wiring/socket_config.dart';
 
-/// Messaging API for real-time communication
+/// 实时通信公开接口
 ///
-/// This abstract class provides a technology-agnostic interface for
-/// real-time messaging. The actual implementation may use WebSocket
-/// or other transport mechanisms.
+/// 底层基于 WebSocket，支持 JSON / 字符串 / 二进制消息、
+/// 自动重连（含无限重连）、Token 热更新、消息加密/解密钩子。
 ///
-/// ## Usage
+/// ## 使用方式
 ///
 /// ```dart
 /// final messaging = NetworksMessagingApi();
 /// await messaging.initialize(SocketConfig(...));
 ///
-/// // Connect to messaging server
 /// await messaging.connect('wss://api.example.com/ws', token: 'xxx');
 ///
-/// // Listen for messages
 /// messaging.messageStream.listen((msg) => print(msg));
 ///
-/// // Send messages
 /// await messaging.send({'type': 'chat', 'data': {...}});
 ///
-/// // Handle connection state
-/// messaging.connectionStateStream.listen((state) => ...);
+/// // Token 热更新（不断连）
+/// messaging.updateToken('new_token');
 ///
-/// // Handle errors
-/// messaging.errorStream.listen((error) => ...);
+/// // 发送二进制
+/// await messaging.sendBytes(Uint8List.fromList([0x01, 0x02]));
 ///
-/// // Lifecycle management
-/// messaging.onEnterForeground();
-/// messaging.onEnterBackground();
-///
-/// // Cleanup
 /// await messaging.disconnect();
 /// await messaging.dispose();
 /// ```
-abstract class NetworksMessagingApi
-{
+abstract class NetworksMessagingApi {
   factory NetworksMessagingApi() => NetworksSdkWiring.buildMessagingApi();
 
-  /// Initialize the messaging service with configuration
   void initialize(SocketConfig config);
 
-  /// Connect to the messaging server
-  ///
-  /// [url] - WebSocket URL (e.g., 'wss://api.example.com/ws')
-  /// [token] - Optional authentication token
   Future<bool> connect(String url, {String? token});
 
-  /// Disconnect from the messaging server
-  ///
-  /// Manual disconnect does not trigger auto-reconnect
   Future<void> disconnect();
 
-  /// Check if currently connected
   bool get isConnected;
 
-  /// Current connection state
   SocketConnectionState get connectionState;
 
-  /// Send a JSON message
+  /// Token 热更新（不断开连接）
+  ///
+  /// 仅更新内部 token，下次重连自动使用新 token。
+  void updateToken(String token);
+
   Future<bool> send(Map<String, dynamic> message);
 
-  /// Send a raw string message
   Future<bool> sendString(String message);
 
-  /// Stream of incoming parsed JSON messages
+  /// 发送二进制数据
+  Future<bool> sendBytes(List<int> bytes);
+
   Stream<Map<String, dynamic>> get messageStream;
 
-  /// Stream of raw string messages (including failed JSON parses)
   Stream<String> get rawMessageStream;
 
-  /// Stream of connection state changes
+  /// 二进制消息流
+  Stream<Uint8List> get binaryMessageStream;
+
   Stream<SocketConnectionState> get connectionStateStream;
 
-  /// Stream of errors
   Stream<SocketError> get errorStream;
 
-  /// Called when app enters foreground
   void onEnterForeground();
 
-  /// Called when app enters background
   void onEnterBackground();
 
-  /// Dispose all resources
   Future<void> dispose();
 }
-

packages/networks_sdk/lib/src/presentation/facade/networks_sdk_api.dart

@@ -1,19 +1,69 @@
-
-
-
+import 'package:dio/dio.dart';
 import 'package:networks_sdk/src/data/dto/api_requestable.dart';
 import 'package:networks_sdk/src/presentation/wiring/api_config.dart';
+import 'package:networks_sdk/src/presentation/wiring/network_callbacks.dart';
 import 'package:networks_sdk/src/presentation/wiring/networks_sdk_wiring.dart';
 
-
-/// SDK API
-abstract class NetworksSdkApi
-{
+/// Networks SDK 公开接口
+///
+/// 提供两种请求入口：
+/// - [executeRequest] — 统一请求入口（标准 / Upload / 流式）
+/// - [executeDownload] — 带进度的文件下载（支持断点续传）
+///
+/// 流式请求（SSE）也走 [executeRequest]，由业务 Request 类 override
+/// `decodeResponse` 处理 SSE 解析。SDK 根据 `requestType == stream`
+/// 自动切换响应类型。
+///
+/// 使用方式：
+/// ```dart
+/// final sdk = NetworksSdkApi();
+/// sdk.initialize(apiConfig);
+///
+/// // 标准请求
+/// final data = await sdk.executeRequest(LoginRequest(...));
+///
+/// // 流式请求（SSE）— 同一入口，Request 类 override decodeResponse
+/// final result = await sdk.executeRequest(VoiceTranscribeRequest(...));
+///
+/// // 文件下载
+/// await sdk.executeDownload(
+///   url: '/files/report.pdf',
+///   savePath: '/tmp/report.pdf',
+///   onProgress: (received, total) => print('$received / $total'),
+/// );
+/// ```
+abstract class NetworksSdkApi {
   factory NetworksSdkApi() => NetworksSdkWiring.build();
 
   Future<String?> platformVersion();
 
-  void initialize(ApiConfig aApiConfig);
+  void initialize(ApiConfig apiConfig);
 
-  Future<T?> executeRequest<T>(ApiRequestable<T> request);
+  /// 执行 API 请求 — 统一入口
+  ///
+  /// 支持标准请求、登录、上传、流式（SSE），由 `request.requestType` 控制。
+  /// 流式请求由业务 Request 类 override `decodeResponse` 处理 SSE 解析。
+  ///
+  /// [cancelToken] — 可选，用于取消正在进行的请求
+  Future<T?> executeRequest<T>(
+    ApiRequestable<T> request, {
+    CancelToken? cancelToken,
+  });
+
+  /// 下载文件到本地路径
+  ///
+  /// [url] — 下载 URL（完整路径或相对路径）
+  /// [savePath] — 本地保存路径
+  /// [onProgress] — 下载进度回调
+  /// [cancelToken] — 取消令牌
+  /// [resume] — 是否断点续传
+  /// [headers] — 额外请求头
+  Future<void> executeDownload({
+    required String url,
+    required String savePath,
+    OnDownloadProgress? onProgress,
+    CancelToken? cancelToken,
+    bool resume = false,
+    Map<String, String>? headers,
+  });
 }

packages/networks_sdk/lib/src/presentation/wiring/api_config.dart

@@ -1,4 +1,3 @@
-
 import 'network_callbacks.dart';
 
 /// API 配置
@@ -13,12 +12,22 @@ class ApiConfig {
   /// 平台相关 headers（App 层注入：version、platform、channel 等）
   Map<String, String> platformHeaders;
 
+  // ── 认证回调 ──
+
   /// Token 过期时的刷新回调
   final OnTokenRefresh? onTokenRefresh;
 
   /// 需要强制登出时的回调
   final OnForceLogout? onForceLogout;
 
+  /// Token 更新后的通知回调
+  ///
+  /// 在 [updateToken] 被调用且新 token 非空时触发。
+  /// App 层用于同步 token 到 WebSocket 等其他模块。
+  final void Function(String newToken)? onTokenUpdated;
+
+  // ── 基础回调 ──
+
   /// 日志输出回调（不设置则不输出日志）
   final OnLog? onLog;
 
@@ -29,12 +38,39 @@ class ApiConfig {
   /// 返回 false 则直接抛 [ApiError.noNetworkConnection]，不走网络。
   final OnCheckNetworkAvailable? onCheckNetworkAvailable;
 
+  // ── 加密回调（预留给 cipher_guard_sdk）──
+
+  /// 请求体加密回调，null 时不加密
+  final OnEncryptRequest? onEncryptRequest;
+
+  /// 响应体解密回调，null 时不解密
+  final OnDecryptResponse? onDecryptResponse;
+
+  // ── 业务错误回调 ──
+
+  /// 业务错误拦截回调
+  ///
+  /// 在 token 过期 / 强制登出判断之后执行。
+  /// 返回 true = App 层已处理，SDK 正常传递响应；
+  /// 返回 false = 未处理，SDK 继续正常流程。
+  final OnBusinessError? onBusinessError;
+
+  /// 响应变换回调
+  ///
+  /// 在 `executeRequest` 解码前调用，App 层可以统一解包
+  /// `{ code, data, message }` 结构。返回 null 表示不变换。
+  final OnTransformResponse? onTransformResponse;
+
+  // ── 错误码集合 ──
+
   /// App 层定义的 Token 过期错误码集合
   final Set<int> tokenExpiredCodes;
 
   /// App 层定义的强制登出错误码集合
   final Set<int> forceLogoutCodes;
 
+  // ── 重试配置 ──
+
   /// 瞬态错误最大重试次数（5xx / 超时 / 连接失败）
   ///
   /// 0 = 不重试（默认），设为 3 启用重试。
@@ -46,18 +82,50 @@ class ApiConfig {
   /// 实际延迟 = min(baseDelay * 2^attempt, 30s) + jitter
   final Duration retryBaseDelay;
 
+  // ── Token 刷新配置 ──
+
+  /// Token 刷新超时时间，防止 onTokenRefresh 卡住导致请求永远阻塞
+  final Duration tokenRefreshTimeout;
+
+  /// Token 刷新时间窗口：刷新成功后此时间内再次收到过期码直接返回成功，
+  /// 避免服务端同步延迟导致的误判
+  final Duration tokenReuseWindow;
+
+  // ── 主动刷新配置 ──
+
+  /// Token 过期时间解析回调
+  ///
+  /// App 层解析 JWT `exp` claim，用于主动刷新判断。
+  /// 未注入时不启用主动刷新。
+  final OnGetTokenExpiry? onGetTokenExpiry;
+
+  /// 主动刷新阈值：距过期不足此时间时提前刷新
+  ///
+  /// 默认 1 小时。WebSocket 重连前、App 回前台时
+  /// 自动检查并刷新即将过期的 token，避免带过期 token 发起请求。
+  final Duration proactiveRefreshThreshold;
+
   ApiConfig({
     required this.baseURL,
     this.token,
     this.platformHeaders = const {},
     this.onTokenRefresh,
     this.onForceLogout,
+    this.onTokenUpdated,
     this.onLog,
     this.onCheckNetworkAvailable,
+    this.onEncryptRequest,
+    this.onDecryptResponse,
+    this.onBusinessError,
+    this.onTransformResponse,
     this.tokenExpiredCodes = const {},
     this.forceLogoutCodes = const {},
     this.maxRetries = 0,
     this.retryBaseDelay = const Duration(seconds: 1),
+    this.tokenRefreshTimeout = const Duration(seconds: 10),
+    this.tokenReuseWindow = const Duration(seconds: 3),
+    this.onGetTokenExpiry,
+    this.proactiveRefreshThreshold = const Duration(hours: 1),
   });
 
   /// 构建默认 headers
@@ -70,6 +138,8 @@ class ApiConfig {
     final headers = <String, String>{
       'Content-Type': 'application/json; charset=utf-8',
       'Accept': 'application/json',
+      'Keep-Alive': 'timeout=60',
+      // Unix 时间戳（秒），整数值，非格式化日期字符串
       'Timestamp': '${DateTime.now().millisecondsSinceEpoch ~/ 1000}',
       'APP-Request-ID': _generateRequestId(),
     };
@@ -91,8 +161,13 @@ class ApiConfig {
   }
 
   /// 更新 token
+  ///
+  /// 同时触发 [onTokenUpdated] 通知其他模块（如 WebSocket）同步 token。
   void updateToken(String? newToken) {
     token = newToken;
+    if (newToken != null && newToken.isNotEmpty) {
+      onTokenUpdated?.call(newToken);
+    }
   }
 
   /// 更新 base URL
@@ -105,4 +180,4 @@ class ApiConfig {
     final now = DateTime.now().microsecondsSinceEpoch;
     return '$now${Object().hashCode}';
   }
-}
+}

packages/networks_sdk/lib/src/presentation/wiring/network_callbacks.dart

@@ -1,13 +1,105 @@
 /// 网络层回调类型定义，由 App 层注入 SDK，避免 SDK 直接依赖外部实现。
 library;
 
+import 'package:networks_sdk/src/domain/entities/encrypted_request.dart';
+
+// ── 认证 ──
+
+/// Token 刷新回调，返回新 token；返回 null 表示刷新失败
 typedef OnTokenRefresh = Future<String?> Function();
 
-/// 強制登出回調
+/// 强制登出回调
 typedef OnForceLogout = void Function();
 
-/// 日誌輸出回調
+// ── Token 生命周期 ──
+
+/// 获取 token 过期时间
+///
+/// App 层解析 JWT 的 `exp` claim 返回过期时间。
+/// 返回 null 表示无法解析（非 JWT 或格式错误）。
+typedef OnGetTokenExpiry = DateTime? Function(String token);
+
+// ── 基础 ──
+
+/// 日志输出回调
 typedef OnLog = void Function(String message, {String? tag});
 
-/// 網路可用性查詢（App 層注入，SDK 在請求前調用）
-typedef OnCheckNetworkAvailable = Future<bool> Function();
+/// 网络可用性查询（App 层注入，SDK 在请求前调用）
+typedef OnCheckNetworkAvailable = Future<bool> Function();
+
+// ── 加密（预留给 cipher_guard_sdk）──
+
+/// HTTP 请求加密回调
+///
+/// 接收原始路径、headers、请求体，返回 [EncryptedRequest]。
+/// 拦截器根据返回值中的非 null 字段覆盖原始请求。
+///
+/// 参数说明：
+/// - [path] — 原始请求路径（如 `/api/v1/auth/login`）
+/// - [headers] — 当前请求的全部 headers（含 token、platform headers 等）
+/// - [body] — 原始请求体（可能是 Map、String、null 等）
+///
+/// App 层实现示例（X25519 + AES-256-CBC 模式）：
+/// - 加密 path → hex 编码 → 替换路径
+/// - 加密 body → base64 编码 → 替换请求体
+/// - 加密 token → 放入 X-Token header
+/// - Ed25519 签名 → 放入 X-Signature header
+/// - Content-Type → text/plain
+typedef OnEncryptRequest =
+    Future<EncryptedRequest> Function(
+      String path,
+      Map<String, String> headers,
+      Object? body,
+    );
+
+/// HTTP 响应解密回调
+///
+/// 输入是原始响应数据（加密后可能是 String、`List<int>`、或 Map），
+/// 返回解密后的 Map 供业务层使用。
+///
+/// [responseData] 的实际类型取决于服务端响应格式：
+/// - 加密模式下通常是 base64 字符串
+/// - 非加密模式下是 `Map<String, dynamic>`
+typedef OnDecryptResponse =
+    Future<Map<String, dynamic>> Function(Object responseData);
+
+// ── 业务错误 ──
+
+/// 业务错误拦截回调
+///
+/// App 层统一处理特定错误码，返回 true = 已处理（SDK 不再抛错），
+/// 返回 false = 未处理（SDK 继续正常流程）。
+typedef OnBusinessError = bool Function(int code, String message, String path);
+
+/// 响应变换回调
+///
+/// App 层自定义响应解包逻辑（如统一解包 `{ code, data, message }` 结构）。
+/// 返回 null 表示不变换，使用原始响应。
+typedef OnTransformResponse =
+    Map<String, dynamic>? Function(Map<String, dynamic> raw);
+
+// ── 下载 ──
+
+/// 下载进度回调
+typedef OnDownloadProgress = void Function(int received, int total);
+
+// ── WebSocket 加密（预留给 cipher_guard_sdk）──
+
+/// WebSocket 连接 URL 构建回调
+///
+/// 建立连接前调用，接收原始 URL 和 token，返回最终的连接 URL 字符串。
+/// WS 握手本质是 HTTP GET 升级请求，只需控制 URL（路径 + 查询参数）。
+///
+/// App 层可在此（通过调用 cipher_guard_sdk）：
+/// - 加密 URL 路径（如 `/ws` → `/hex(encrypt(ws))`）
+/// - 加密 token 参数（明文 token 不出现在 URL 中）
+/// - 添加加密模式协商参数（如 `cipher=true&type=mode3`）
+///
+/// null 时使用默认行为：在 URL 后追加 `?token=xxx`。
+typedef OnBuildConnectUrl = String Function(String url, String? token);
+
+/// WebSocket 发送前加密回调
+typedef OnEncryptMessage = Future<String> Function(String plainText);
+
+/// WebSocket 收到后解密回调
+typedef OnDecryptMessage = Future<String> Function(String cipherText);

packages/networks_sdk/lib/src/presentation/wiring/networks_messaging_api_impl.dart

@@ -1,3 +1,5 @@
+import 'dart:typed_data';
+
 import 'package:networks_sdk/src/data/repositories/networks_messaging_repository_impl.dart';
 import 'package:networks_sdk/src/domain/entities/socket_connection_state.dart';
 import 'package:networks_sdk/src/domain/entities/socket_error.dart';
@@ -5,7 +7,7 @@ import 'package:networks_sdk/src/domain/repositories/networks_messaging_reposito
 import 'package:networks_sdk/src/presentation/facade/networks_messaging_api.dart';
 import 'package:networks_sdk/src/presentation/wiring/socket_config.dart';
 
-/// Implementation of [NetworksMessagingApi] using [NetworksMessagingRepository]
+/// [NetworksMessagingApi] 的实现，透传给 [NetworksMessagingRepository]
 class NetworksMessagingApiImpl implements NetworksMessagingApi {
   NetworksMessagingRepository? _repository;
 
@@ -47,6 +49,12 @@ class NetworksMessagingApiImpl implements NetworksMessagingApi {
     return _repository!.connectionState;
   }
 
+  @override
+  void updateToken(String token) {
+    _checkInitialized();
+    _repository!.updateToken(token);
+  }
+
   @override
   Future<bool> send(Map<String, dynamic> message) {
     _checkInitialized();
@@ -59,6 +67,12 @@ class NetworksMessagingApiImpl implements NetworksMessagingApi {
     return _repository!.sendString(message);
   }
 
+  @override
+  Future<bool> sendBytes(List<int> bytes) {
+    _checkInitialized();
+    return _repository!.sendBytes(bytes);
+  }
+
   @override
   Stream<Map<String, dynamic>> get messageStream {
     _checkInitialized();
@@ -71,6 +85,12 @@ class NetworksMessagingApiImpl implements NetworksMessagingApi {
     return _repository!.rawMessageStream;
   }
 
+  @override
+  Stream<Uint8List> get binaryMessageStream {
+    _checkInitialized();
+    return _repository!.binaryMessageStream;
+  }
+
   @override
   Stream<SocketConnectionState> get connectionStateStream {
     _checkInitialized();
@@ -103,4 +123,3 @@ class NetworksMessagingApiImpl implements NetworksMessagingApi {
     }
   }
 }
-

packages/networks_sdk/lib/src/presentation/wiring/networks_sdk_api_impl.dart

@@ -1,7 +1,7 @@
 import '../../../networks_sdk.dart';
 import 'networks_sdk_core.dart';
 
-/// SDK API Implementation
+/// [NetworksSdkApi] 的实现，透传给 Repository
 class NetworksSdkApiImpl implements NetworksSdkApi {
   final NetworksSdkCore _core;
 
@@ -14,6 +14,29 @@ class NetworksSdkApiImpl implements NetworksSdkApi {
   void initialize(ApiConfig apiConfig) => _core.repo.initialize(apiConfig);
 
   @override
-  Future<T?> executeRequest<T>(ApiRequestable<T> request) => _core.repo.executeRequest(request);
+  Future<T?> executeRequest<T>(
+    ApiRequestable<T> request, {
+    CancelToken? cancelToken,
+  }) {
+    return _core.repo.executeRequest(request, cancelToken: cancelToken);
+  }
 
+  @override
+  Future<void> executeDownload({
+    required String url,
+    required String savePath,
+    OnDownloadProgress? onProgress,
+    CancelToken? cancelToken,
+    bool resume = false,
+    Map<String, String>? headers,
+  }) {
+    return _core.repo.executeDownload(
+      url: url,
+      savePath: savePath,
+      onProgress: onProgress,
+      cancelToken: cancelToken,
+      resume: resume,
+      headers: headers,
+    );
+  }
 }

packages/networks_sdk/lib/src/presentation/wiring/socket_config.dart

@@ -1,9 +1,13 @@
+import 'package:networks_sdk/src/presentation/wiring/network_callbacks.dart';
+
 /// WebSocket 配置
 /// 非单例，由 App 层构造并注入到 SocketClient
 ///
 /// 与 [ApiConfig] 设计一致：SDK 不依赖 Flutter，
 /// 网络检测、生命周期等业务逻辑通过回调注入。
 class SocketConfig {
+  // ── 心跳 ──
+
   /// 应用层心跳间隔（定时发送 "ping" 字符串）
   final Duration heartbeatInterval;
 
@@ -13,10 +17,19 @@ class SocketConfig {
   /// Pong 超时（超过此时间未收到 pong 则判定连接断开）
   final Duration pongTimeout;
 
+  // ── 连接 ──
+
   /// 连接超时
   final Duration connectTimeout;
 
+  /// 是否启用 WebSocket 压缩（permessage-deflate）
+  final bool enableCompression;
+
+  // ── 重连 ──
+
   /// 最大重连次数（0 = 不重连）
+  ///
+  /// 当 [unlimitedReconnect] 为 true 时此字段无效。
   final int maxReconnectAttempts;
 
   /// 最大重连延迟（指数退避上限）
@@ -25,22 +38,65 @@ class SocketConfig {
   /// 是否自动重连
   final bool autoReconnect;
 
+  /// 无限重连模式
+  ///
+  /// IM 场景建议开启：连接断开后始终尝试重连，不受
+  /// [maxReconnectAttempts] 限制。退避延迟仍受
+  /// [maxReconnectDelay] 约束。
+  final bool unlimitedReconnect;
+
+  // ── 回调 ──
+
   /// 日志输出回调（与 ApiConfig.onLog 同签名）
-  final void Function(String message, {String? tag})? onLog;
+  final OnLog? onLog;
 
   /// 网络可用性查询（App 层注入，SDK 在重连前调用）
   /// 返回 true 表示网络可用，可以尝试重连
-  final Future<bool> Function()? onCheckNetworkAvailable;
+  final OnCheckNetworkAvailable? onCheckNetworkAvailable;
+
+  /// 重连前回调
+  ///
+  /// 每次自动重连前调用（心跳超时、连接断开等触发的内部重连）。
+  /// App 层用于：
+  /// - 检查并刷新即将过期的 token（通过 [SocketClient.updateToken]）
+  /// - 其他重连前准备工作
+  ///
+  /// 回调完成后才发起实际连接。如果回调抛出异常，本次重连跳过，
+  /// 等下一轮退避定时器触发。
+  final Future<void> Function()? onBeforeReconnect;
+
+  // ── 加密回调（预留给 cipher_guard_sdk）──
+
+  /// 连接 URL 构建回调
+  ///
+  /// 建立连接前调用，接收原始 URL 和 token，返回最终连接 URL 字符串。
+  /// null 时使用默认行为（URL 后追加 `?token=xxx`）。
+  ///
+  /// App 层注入 cipher_guard_sdk 的加密逻辑：路径/token 加密、
+  /// 添加 `cipher=true` 参数等。
+  final OnBuildConnectUrl? onBuildConnectUrl;
+
+  /// 发送前加密回调，null 时不加密
+  final OnEncryptMessage? onEncryptMessage;
+
+  /// 收到后解密回调，null 时不解密
+  final OnDecryptMessage? onDecryptMessage;
 
   SocketConfig({
     this.heartbeatInterval = const Duration(seconds: 10),
     this.pingInterval = const Duration(seconds: 5),
     this.pongTimeout = const Duration(seconds: 10),
     this.connectTimeout = const Duration(seconds: 15),
+    this.enableCompression = false,
     this.maxReconnectAttempts = 5,
     this.maxReconnectDelay = const Duration(seconds: 30),
     this.autoReconnect = true,
+    this.unlimitedReconnect = false,
     this.onLog,
     this.onCheckNetworkAvailable,
+    this.onBeforeReconnect,
+    this.onBuildConnectUrl,
+    this.onEncryptMessage,
+    this.onDecryptMessage,
   });
 }