diff --git a/.idea/libraries/Dart_SDK.xml b/.idea/libraries/Dart_SDK.xml
index 91dae00..71fcae3 100644
--- a/.idea/libraries/Dart_SDK.xml
+++ b/.idea/libraries/Dart_SDK.xml
@@ -1,25 +1,25 @@
 <component name="libraryTable">
   <library name="Dart SDK">
     <CLASSES>
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/async" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/cli" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/collection" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/convert" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/core" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/developer" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/ffi" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/html" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/indexed_db" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/io" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/isolate" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/js" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/js_util" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/math" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/mirrors" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/svg" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/typed_data" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/web_audio" />
-      <root url="file://$PROJECT_DIR$/../../flutter/bin/cache/dart-sdk/lib/web_gl" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/async" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/cli" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/collection" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/convert" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/core" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/developer" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/ffi" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/html" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/indexed_db" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/io" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/isolate" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/js" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/js_util" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/math" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/mirrors" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/svg" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/typed_data" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/web_audio" />
+      <root url="file://$USER_HOME$/Development/flutter/bin/cache/dart-sdk/lib/web_gl" />
     </CLASSES>
     <JAVADOC />
     <SOURCES />
diff --git a/example/pubspec.lock b/example/pubspec.lock
index d6e0738..9538822 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -5,56 +5,56 @@ packages:
     dependency: transitive
     description:
       name: async
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.3.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.16.0"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.0.5"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.3.0"
   flutter:
@@ -78,28 +78,28 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.12.11"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.1.4"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.7.0"
   path:
     dependency: transitive
     description:
       name: path
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.8.1"
   sky_engine:
@@ -111,49 +111,49 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.8.2"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.4.9"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.2"
 sdks:
diff --git a/lib/src/openim.dart b/lib/src/openim.dart
index 6ddba81..291581d 100644
--- a/lib/src/openim.dart
+++ b/lib/src/openim.dart
@@ -2,7 +2,7 @@ import 'package:flutter/services.dart';
 import 'package:flutter_openim_sdk/flutter_openim_sdk.dart';
 
 class OpenIM {
-  static const version = '2.3.0';
+  static const version = '2.3.2';
 
   static const _channel = const MethodChannel('flutter_openim_sdk');
 
diff --git a/pubspec.lock b/pubspec.lock
index 4f45481..72b79cf 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -5,49 +5,49 @@ packages:
     dependency: transitive
     description:
       name: async
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.3.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.16.0"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.3.0"
   flutter:
@@ -64,28 +64,28 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.12.11"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.1.4"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.7.0"
   path:
     dependency: transitive
     description:
       name: path
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.8.1"
   sky_engine:
@@ -97,49 +97,49 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.8.2"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.4.9"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://mirrors.sjtug.sjtu.edu.cn/dart-pub/"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.2"
 sdks: