udpate version and release not

公众号消息添加摘要字段
升级netty版本为4.1.68.Final
2022-09-20 10:46:07 +08:00 · 2022-09-20 10:41:45 +08:00 · 2022-09-18 22:05:22 +08:00 · 2022-09-08 21:28:42 +08:00 · 2022-09-08 13:34:18 +08:00 · 2022-09-06 16:14:20 +08:00
194 changed files with 12042 additions and 1339 deletions
@@ -15,3 +15,6 @@

 #### demo对比结果
 请用demo对比测试，demo上是什么状态。
+
+#### 检索已有问题
+除了可以检索已有issue外，还可以去野火论坛查找已有问题，论坛地址为 https://bbs.wildfirechat.cn
@@ -1,54 +1,70 @@
-## 野火IM解决方案
+# 野火IM解决方案
+野火IM是专业级的即时通讯和实时音视频整体解决方案，由北京野火无限网络科技有限公司维护和支持。

-野火IM是专业级即时通讯和实时音视频整体解决方案，由北京野火无限网络科技有限公司维护和支持。
+## 功能特性
+* 极致地硬件利用率，IM服务最低128M内存即可运行，上不封顶。
+* 协议先进，采用MQTT+Protobuf组合，流量和性能极致优化。
+* 性能强大，专业版IM服务支持百万在线和集群部署。
+* 部署运维简单，依赖服务少，稍加配置一键启动。
+* 安全加密。网络连接AES加密。客户端数据库SqlCipher加密。安全无小事。
+* 全平台客户端，四端同时在线（移动端，pc端，web端和小程序端），数据和状态多端完美同步。
+* 支持国产化。支持国产化操作系统、国产化芯片和国产操作系统。支持国密加密。
+* 客户端使用微信[mars](https://github.com/tencent/mars)连接库，野火IM可能是最适应中国网络国情的即时通讯服务。
+* 支持加速点加速，即可用于全球应用，也可用于政企内外双网复杂的网络环境。
+* 支持阅读回执和在线状态功能，适用于办公环境。
+* 音视频多种解决方案，丰俭由人，可自由选择。
+* 高级音视频功能强大，支持9人以上的群组视频通话，支持1080P视频，支持会议模式，支持百人以上会议，支持服务器端录制。
+* 全私有部署，可不依赖任何第三方服务，完全内网部署。
+* 功能齐全，涵盖所有常见即时通讯功能。另外具有强大的可扩展能力。Demo成熟完善，基本可以做到开箱即用，也可把SDK嵌入其它应用。
+* 拥有应用开放平台，可以开发和创建自建应用，扩展您的工作台。
+* API丰富，方便与其它服务系统的对接。
+* 拥有机器人和频道功能。
+* 代码开源率高，二次开发简单。可以先试用3到6个月，二开搞定后再购买。

-主要特性有：私有部署安全可靠，性能强大，功能齐全，全平台支持，开源率高，部署运维简单，二次开发友好，方便与第三方系统对接或者嵌入现有系统中。详细情况请参考[在线文档](https://docs.wildfirechat.cn)。
+## 野火开源项目
+主要包括以下项目：

-主要包括一下项目：
+| [GitHub仓库地址](https://github.com/wildfirechat)      | [码云仓库地址](https://gitee.com/wfchat)        | 说明                                                                                      
+| ------------------------------------------------------------ | ----------------------------------------------------- | --------------------------------------------------------------------------
+| [im-server](https://github.com/wildfirechat/im-server)       | [im-server](https://gitee.com/wfchat/im-server)          | 野火社区版IM服务，野火IM的核心服务，处理所有IM相关业务。  |
+| [app_server](https://github.com/wildfirechat/app_server)     | [app_server](https://gitee.com/wfchat/app_server)     | Demo应用服务，模拟客户的应用服登陆处理逻辑及部分二次开发示例。 |
+| [robot_server](https://github.com/wildfirechat/robot_server) | [robot_server](https://gitee.com/wfchat/robot_server) | 机器人服务，演示野火机器人对接其它系统的方法。 |
+| [push_server](https://github.com/wildfirechat/push_server)   | [push_server](https://gitee.com/wfchat/push_server)   | 推送服务器，可以对接所有的系统厂商推送服务或者第三方推送服务。 |
+| [wf-minio](https://github.com/wildfirechat/WF-minio)   | [wf-minio](https://gitee.com/wfchat/WF-minio)   | 私有对象存储服务，用来支持野火IM专业版的文件存储。 |
+| [wf-janus](https://github.com/wildfirechat/wf-janus  )   | [wf-janus](https://gitee.com/wfchat/wf-janus  )   | 高级音视频媒体服务。 |
+| [open-platform](https://github.com/wildfirechat/open-platform)   | [open-platform](https://gitee.com/wfchat/open-platform)   | 野火开放平台服务。  |
+| [daily-report](https://github.com/wildfirechat/daily-report)   | [daily-report](https://github.com/wildfirechat/daily-report)   | 野火开放平台日报 demo服务。 |
+| [channel-platform](https://github.com/wildfirechat/channel-platform)   | [channel-platform](https://gitee.com/wfchat/channel-platform)   | 野火频道(公众号)平台服务。  |
+| [android-chat](https://github.com/wildfirechat/android-chat) | [android-chat](https://gitee.com/wfchat/android-chat) | 野火IM Android SDK源码和App源码。 |
+| [ios-chat](https://github.com/wildfirechat/ios-chat)         | [ios-chat](https://gitee.com/wfchat/ios-chat)         | 野火IM iOS SDK源码和App源码。|
+| [pc-chat](https://github.com/wildfirechat/vue-pc-chat)       | [pc-chat](https://gitee.com/wfchat/vue-pc-chat)       | 基于[Electron](https://electronjs.org/)的PC 端，支持Windows、Mac、Linux（包括国产化linux系统和CPU）。   |
+| [web-chat](https://github.com/wildfirechat/vue-chat)         | [web-chat](https://gitee.com/wfchat/vue-chat)         | 野火IM Web 端, [体验地址](https://web.wildfirechat.cn)。  |
+| [wx-chat](https://github.com/wildfirechat/wx-chat)           | [wx-chat](https://gitee.com/wfchat/wx-chat)           | 小程序平台的Demo(支持微信、百度、阿里、字节、QQ 等小程序平台)。  |
+| [uni-chat](https://github.com/wildfirechat/uni-chat)           | [uni-chat](https://gitee.com/wfchat/uni-chat)           | UniApp平台移动端应用(使用原生插件)。   |
+| [uni-wfc-client](https://github.com/wildfirechat/uni-wfc-client)           | [uni-wfc-client](https://gitee.com/wfchat/uni-wfc-client)           | UniApp平台原生插件。   |
+| [flutter_imclient](https://github.com/wildfirechat/flutter_imclient)           | [flutter_imclient](https://gitee.com/wfchat/flutter_imclient)           | Flutter平台原生插件。   |
+| [docs](https://github.com/wildfirechat/docs)                 | [docs](https://gitee.com/wfchat/docs)                 | 野火IM相关文档，包含设计、概念、开发、使用说明，[在线查看](https://docs.wildfirechat.cn/)。 |

-| [GitHub仓库地址(主站)](https://github.com/wildfirechat)      | [码云仓库地址(镜像)](https://gitee.com/wfchat)        | 说明                                                                                      | 备注                                           |
-| ------------------------------------------------------------ | ----------------------------------------------------- | ----------------------------------------------------------------------------------------- | ---------------------------------------------- |
-| [android-chat](https://github.com/wildfirechat/android-chat) | [android-chat](https://gitee.com/wfchat/android-chat) | 野火IM Android SDK源码和App源码                                                           | 可以很方便地进行二次开发，或集成到现有应用当中 |
-| [ios-chat](https://github.com/wildfirechat/ios-chat)         | [ios-chat](https://gitee.com/wfchat/ios-chat)         | 野火IM iOS SDK源码和App源码                                                               | 可以很方便地进行二次开发，或集成到现有应用当中 |
-| [pc-chat](https://github.com/wildfirechat/pc-chat)           | [pc-chat](https://gitee.com/wfchat/pc-chat)           | 基于[Electron](https://electronjs.org/)开发的PC平台应用                                   |                                                |
-| [web-chat](https://github.com/wildfirechat/web-chat)         | [web-chat](https://gitee.com/wfchat/web-chat)         | Web平台的Demo, [体验地址](http://web.wildfirechat.cn)                                     |                                                |
-| [wx-chat](https://github.com/wildfirechat/wx-chat)           | [wx-chat](https://gitee.com/wfchat/wx-chat)           | 微信小程序平台的Demo                                                                      |                                                |
-| [server](https://github.com/wildfirechat/server)             | [server](https://gitee.com/wfchat/server)             | IM server                                                                                 |                                                |
-| [app server](https://github.com/wildfirechat/app_server)     | [app server](https://gitee.com/wfchat/app_server)     | 应用服务端                                                                                |                                                |
-| [robot_server](https://github.com/wildfirechat/robot_server) | [robot_server](https://gitee.com/wfchat/robot_server) | 机器人服务端                                                                              |                                                |
-| [push_server](https://github.com/wildfirechat/push_server)   | [push_server](https://gitee.com/wfchat/push_server)   | 推送服务器                                                                                |                                                |
-| [docs](https://github.com/wildfirechat/docs)                 | [docs](https://gitee.com/wfchat/docs)                 | 野火IM相关文档，包含设计、概念、开发、使用说明，[在线查看](https://docs.wildfirechat.cn/) |                                                |  |
+## 野火开发文档
+[在线文档](https://docs.wildfirechat.cn/)

-
-# server
-本工程为野火IM 社区版IM服务软件。野火IM作为一个通用的即时通讯解决方案，既可以直接使用，也可以集成到各种应用中。
-
-
-开发一套IM系统真的很艰辛，请路过的朋友们给点个star，支持我们坚持下去🙏🙏🙏🙏🙏
-
-### 联系我们
-
-> 商务合作请优先采用邮箱和我们联系。技术问题请到[野火IM论坛](http://bbs.wildfirechat.cn/)发帖交流
-
-1. heavyrain.lee  邮箱: heavyrain.lee@wildfirechat.cn  微信：wildfirechat
-2. imndx  邮箱: imndx@wildfirechat.cn  微信：wfchat
-
-### 问题交流
-
-1. 如果大家发现bug，请在GitHub提issue
-2. 其他问题，请到[野火IM论坛](http://bbs.wildfirechat.cn/)进行交流学习
-3. 微信公众号
-
-<img src="http://static.wildfirechat.cn/wx_wfc_qrcode.jpg" width = 50% height = 50% />
-
-> 强烈建议关注我们的公众号。我们有新版本发布或者有重大更新会通过公众号通知大家，另外我们也会不定期的发布一些关于野火IM的技术介绍。
-
-#### 体验Demo
-我们提供了体验demo，请使用微信扫码下载安装体验
+## 野火Demo
+请使用微信扫码下载安装体验野火IM移动客户端

 ![野火IM](http://static.wildfirechat.cn/download_qrcode.png)

-#### 应用截图
+Web客户端点击[这里](https://web.wildfirechat.cn)
+
+PC客户端点[这里](https://github.com/wildfirechat/vue-pc-chat/releases)下载安装。
+
+小程序客户端请用微信扫码
+
+![野火IM](http://static.wildfirechat.net/wx.jpg)
+
+## 快速使用
+野火提供免费的社区版IM服务和移动端，包括完整的移动端即时通讯和实时音视频功能，可以无条件商用。您可以直接从开源项目里下载到完整的后端和移动端产品，包括社区版IM服务、应用服务、开放平台服务、频道（公众号）服务、机器人服务、推送服务以及Android和iOS端源码。可以按照[快速开始](https://docs.wildfirechat.cn/quick_start/)来部署应用服务和IM服务，然后打包移动端，以最小化运行。之后可以详细阅读文档部署其他支撑服务。
+
+## 应用截图
 ![ios-demo](http://static.wildfirechat.cn/ios-demo.gif)

 <img src="http://static.wildfirechat.cn/ios-message-view.png" width = 50% height = 50% />
@@ -71,16 +87,49 @@

 <img src="http://static.wildfirechat.cn/ios-voip-view.png" width = 50% height = 50% />

+
 ## 编译
-在安装JDK1.8以上及maven的前提下，在命令行中执行```mvn clean compile package```，生成的目标文件在```./distribution/target/distribution-xxxx-bundle-tar.tar.gz```
+在安装JDK1.8以上及maven的前提下，在命令行中执行```mvn clean package```，生成的目标文件在```./distribution/target/distribution-xxxx-bundle-tar.tar.gz```
 > 由于使用了一个git的maven插件，如果本地没有git信息就会编译出错，请使用```git clone```的方法下载代码，或者下载压缩包解压后在根目录创建```.git```的空目录。建议用```git clone```的方式下载代码。

+## 配置
+解压```distribution-xxxx-bundle-tar.tar.gz```，修改解压出来的```config```目录下的```wildfirechat.conf```。修改如下部分：
+1. 修改```server.ip```为您的服务器的公网IP，或者域名。如果用域名需要做好域名解析。
+2. 可以阅读配置文件注释和文档，对其它配置项进行调整。
+
+## 运行
+在程序目录运行如下命令：
+```
+./bin/wildfirechat.sh
+```
+
+## 验证
+1. 在浏览器中输入地址 ```http://${ip}/api/version```可以看到返回一个json文件。
+2. 部署[应用服务](应用服务)，配置和编译[Android客户端](https://github.com/wildfirechat/android-chat)和[iOS客户端](https://github.com/wildfirechat/ios-chat)进行验证。详情可参考[快速开始](https://docs.wildfirechat.cn/quick_start/)。
+
 ## 升级说明
 1. 从0.42 版本增加了群成员数限制，默认为2000。如果您从之前的版本升级到这个版本或以后，需要注意到群成员数的限制。升级之后超出限制的群不受影响，但不能继续加人，如果您想修改默认值，可以在升级版本之后，修改t_setting表，把默认的大小改为您期望的人数。另外修改t_group表，把已经存在的群组max_member_count改成您期望的，然后重启。
 2. 0.46和0.47版本升级到0.48及以后版本时，可能会提示flyway migrate 38错误，请执行 [修复脚本](https://github.com/wildfirechat/server/blob/wildfirechat/flyway_repaire_migrate_38.sql) 进行修复。0.46和0.47版本之外的版本不会出现此问题。
 3. 从0.54之前版本升级到0.54及以后版本时，会提示flyway migrate错误。因为0.54版本删除了sql脚本中默认敏感词的内容，flyway checksum失败。请执行```update flyway_schema_history set checksum = 0 where script = 'V17__add_default_sensitive_word.sql';```来修复。
 4. 从0.59之前的版本升级到之后的版本执行数据库升级时间比较长，请耐心等待提示运行成功，避免中途中断。

+
+## 联系我们
+
+商务合作请使用如下邮箱和微信联系：
+
+邮箱: support@wildfirechat.cn  微信1：wfchat 微信2：wildfirechat
+
+## 问题交流
+
+1. 如果大家发现bug，请在GitHub提issue；如果有需求也请给我们提issue。
+2. 其他问题，请到[野火IM论坛](http://bbs.wildfirechat.cn/)进行交流学习
+3. 关注我们的公众号。我们有新版本发布或者有重大更新会通过公众号通知大家，另外我们也会不定期的发布一些关于野火IM的技术介绍。
+
+<img src="http://static.wildfirechat.cn/wx_wfc_qrcode.jpg" width = 50% height = 50% />
+
+> 我们有研发工程师轮流值班处理issue和论坛，一般简单问题几个小时就会回复一遍，疑难Bug的修改和新需求的开发我们也会尽快解决。
+
 ## 特别感谢
 1. [moquette](https://github.com/moquette-io/moquette) 本项目是基于此项目二次开发而来，处理MQTT相关业务。
 2. [loServer](https://github.com/looly/loServer) 本项目使用loServer处理HTTP相关业务。
@@ -26,17 +26,19 @@ http.admin.port 18080
 ##节点ID，当集群部署时，一定不能有重复。
 node_id 1

-##绑定IP，保持不变即可
-host 0.0.0.0
+##绑定IP，不要打开，除非有特殊需求才可以打开
+#host 0.0.0.0

 ##本地绑定端口
 local_port 80

-##是否使用内置DB。0使用mysql；1使用h2db。
+## 是否使用内置DB。0使用mysql；1使用h2db。
+## MySQL需要把事物隔离级别改成"Read committed"，使用命令来修改"set global transaction_isolation='read-committed';"，其他数据库默认已经是这个级别不用修改
 embed.db 1

 ## 是否自动清理历史消息记录，当为true时，IM服务会定时扫描t_messages_x和t_user_messages_x表，清除掉3年前的历史消息。
 ## 如果不开启自动清理，需要手动清理t_messages_x和t_user_messages_x表内的历史数据，保存数据不能超过3年。
+## 如果需要消息保存更长时间，可以把临近销毁的消息转储到别的数据库，客户端在拉取不到服务器消息时，再去转储的数据库拉取。
 ## 使用mongodb时次开关无效（因为mongodb设置了消息过期时间，会自动清理，仅专业版支持mongodb）。
 db.auto_clean_history_messages true

@@ -55,10 +57,13 @@ token.key testim
 ##token.expire_time 2592000000

 ##首次登录，是否接收之前的历史消息。
-##0 不接收历史消息，只接收5分钟以内的消息，由于服务器没有保存已经收取记录，所以如果有超过5分钟之前未收取的消息也不会收取下拉；
+##0 不接收历史消息，只接收${message.compensate_time_limit}毫秒以内的消息，由于服务器没有保存已经收取记录，所以如果有超过${message.compensate_time_limit}毫秒之前未收取的消息也不会收取下拉；
 ##1接收，会接收 message.max_queue 配置的条数的历史消息
 message.roaming 0

+## 消息补偿时限，当${message.roaming}为0时，会同步时限以内且小于${message.max_queue}的消息，默认时限为5分钟。当${message.roaming}为1时，会接收 message.max_queue 配置的条数的历史消息。
+message.compensate_time_limit 300000
+
 ##是否开启拉取远程历史消息。如果为1，客户端在会话内如果本地消息读取完了，可以下拉继续加载在服务器上的该会话的消息；如果为0则不能。
 message.remote_history_message 0

@@ -107,6 +112,14 @@ message.global_mute_exception_types 401,402,403,404,405,407,408,410,411
 ## 当为true时，不转发server api发送的消息；当为false时，转发server api发送的消息。
 message.no_forward_admin_message false

+## 消息转发功能开启时，转发信息是否带上用户clientId和平台类型。
+message.forward_with_client_info false
+
+## 机器人回调信息是否带上用户clientId和平台类型。
+robot.callback_with_client_info false
+
+## 频道回调信息是否带上用户clientId和平台类型。
+channel.callback_with_client_info false

 ##禁止搜索用户
 friend.disable_search false
@@ -117,13 +130,13 @@ friend.disable_nick_name_search false
 ##禁止发送好友邀请，通过server api添加好友不受此限制(force参数需要为true)
 friend.disable_friend_request false

-##好友请求重复发送的间隔，单位是毫秒，默认是7天，0为不限制
+##好友请求重复发送的间隔，单位是毫秒，默认是7天，0为无限长期限。
 friend.repeat_request_duration 604800000

-##好友请求被拒绝后再次发送的间隔，单位是毫秒，默认是30天，0为不限制
+##好友请求被拒绝后再次发送的间隔，单位是毫秒，默认是30天，0为不限制。不能小于friend.repeat_request_duration。
 friend.reject_request_duration 2592000000

-##好友请求过期时间，单位是毫秒，默认是7天，0为不限制
+##好友请求过期时间，单位是毫秒，默认是7天，0为无限长期限。
 friend.request_expiration_duration 604800000

 ##添加好友后会发送欢迎消息，比如"你们已经是好友了，可以聊天了"。这个开关控制是用旧的方式还是用新的方式。
@@ -156,6 +169,9 @@ group.visible_quit_or_kickoff_notification 0
 ## 注意，修改本配置不会对已经同步的信息产生影响。
 #user.hide_properties 3,4,5

+## 销毁用户时，用户信息会被清空，deleted字段设置为1，这个开关控制是否保留用户昵称，默认为true。
+user.keep_display_name_when_destroy true
+
 # 好友/好友请求/用户设置 这三类数据同步的最大条目数。之前是客户第一次登录时，会把所有的对应数据一次下载到客户端，但如果有特别多的信息，会导致无法同步到客户端，
 # 因此需要分段多次同步，此开关定义了每次同步的数据的条数。此需要客户端支持，客户端SDK在2021.5.25日后支持此功能。如果确认所有客户端都在这个日志之后才可以打开此设置。
 #sync.data_part_size 1000
@@ -234,6 +250,9 @@ local.media.storage.root media
 # 建议使用false
 server.multi_endpoint false

+## 是否支持PC多端登陆，当server.multi_endpoint为true时，此开关无意义，当为false时，可以单独打开PC端多端登录。
+server.multi_pc_endpoint false
+
 # 多平台连接状态通知（仅当multi_endpoint为false时有效），true时移动端可以收到pc或web端登录的通知。
 server.multi_platform_notification true

@@ -285,6 +304,10 @@ push.ios.server.address http://localhost:8085/ios/push
 ##需要转发的消息类型，当有多个时以英文逗号分割。如果转发所有消息，请注释掉配置或者设置为空
 #message.forward.types 1,2,3

+##敏感消息转发地址
+##注意回调是单线程回调，接收服务必须在同一内网，且异步处理快速返回，否则会有延迟问题！！
+#message.sensitive.forward.url http://localhost:8888/im_event/message
+
 ##提醒消息转发地址，@全体用户和@某个用户消息会回调此地址。此转发不受${message.forward.types}限制。
 ##注意回调是单线程回调，接收服务必须在同一内网，且异步处理快速返回，否则会有延迟问题！！
 #message.mentionmsg.forward.url http://localhost:8888/im_event/message
@@ -0,0 +1 @@
+alter table `t_user_setting` modify column `_key` varchar(128) NOT NULL;
@@ -0,0 +1,13 @@
+
+DROP TABLE IF EXISTS `t_secret_chat`;
+CREATE TABLE `t_secret_chat` (
+  `id` int(11) NOT NULL PRIMARY KEY AUTO_INCREMENT,
+  `_uid` varchar(64) NOT NULL,
+  `_from` varchar(64) DEFAULT '',
+  `_from_cid` varchar(64) DEFAULT '',
+  `_to` varchar(64) DEFAULT '',
+  `_to_cid` varchar(64) DEFAULT '',
+  `_state` tinyint NOT NULL DEFAULT 0,
+  `_dt` bigint(20) NOT NULL,
+  UNIQUE INDEX `secret_chat_uid_index` (`_uid` DESC)
+);
@@ -0,0 +1 @@
+alter table `t_messages` add INDEX `messages_conv_index` ( `_type`, `_target`, `_line`);
@@ -0,0 +1 @@
+alter table `t_channel_listener` add INDEX `channel_mid_index` ( `_mid`);
@@ -0,0 +1 @@
+alter table `t_channel` add column `_menu` BLOB DEFAULT NULL;
@@ -0,0 +1,3 @@
+
+ALTER TABLE `t_read_report` MODIFY COLUMN `_uid` VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL;
+ALTER TABLE `t_read_report` MODIFY COLUMN `_target` VARCHAR(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL;
@@ -0,0 +1 @@
+alter table `t_user_setting` modify column `_key` varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL;
@@ -0,0 +1,16 @@
+
+DROP TABLE IF EXISTS `t_secret_chat`;
+CREATE TABLE `t_secret_chat` (
+  `id` int(11) NOT NULL PRIMARY KEY AUTO_INCREMENT,
+  `_uid` varchar(64) NOT NULL,
+  `_from` varchar(64) DEFAULT '',
+  `_from_cid` varchar(64) DEFAULT '',
+  `_to` varchar(64) DEFAULT '',
+  `_to_cid` varchar(64) DEFAULT '',
+  `_state` tinyint NOT NULL DEFAULT 0,
+  `_dt` bigint(20) NOT NULL,
+  UNIQUE INDEX `secret_chat_uid_index` (`_uid` DESC)
+)
+ENGINE = InnoDB
+DEFAULT CHARACTER SET = utf8mb4
+COLLATE = utf8mb4_bin;
@@ -0,0 +1,37 @@
+alter table `t_messages` add INDEX `messages_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_0` add INDEX `messages0_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_1` add INDEX `messages1_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_2` add INDEX `messages2_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_3` add INDEX `messages3_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_4` add INDEX `messages4_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_5` add INDEX `messages5_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_6` add INDEX `messages6_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_7` add INDEX `messages7_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_8` add INDEX `messages8_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_9` add INDEX `messages9_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_10` add INDEX `messages10_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_11` add INDEX `messages11_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_12` add INDEX `messages12_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_13` add INDEX `messages13_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_14` add INDEX `messages14_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_15` add INDEX `messages15_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_16` add INDEX `messages16_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_17` add INDEX `messages17_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_18` add INDEX `messages18_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_19` add INDEX `messages19_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_20` add INDEX `messages20_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_21` add INDEX `messages21_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_22` add INDEX `messages22_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_23` add INDEX `messages23_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_24` add INDEX `messages24_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_25` add INDEX `messages25_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_26` add INDEX `messages26_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_27` add INDEX `messages27_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_28` add INDEX `messages28_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_29` add INDEX `messages29_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_30` add INDEX `messages30_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_31` add INDEX `messages31_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_32` add INDEX `messages32_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_33` add INDEX `messages33_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_34` add INDEX `messages34_conv_index` (`_type`, `_target`, `_line`);
+alter table `t_messages_35` add INDEX `messages35_conv_index` (`_type`, `_target`, `_line`);
@@ -0,0 +1 @@
+alter table `t_channel_listener` add INDEX `channel_mid_index` (`_mid`);
@@ -0,0 +1 @@
+alter table `t_channel` add column `_menu` BLOB DEFAULT NULL;
@@ -5,7 +5,7 @@
        <relativePath>../</relativePath>
        <artifactId>wildfirechat-parent</artifactId>
        <groupId>cn.wildfirechat</groupId>
-        <version>0.78</version>
+        <version>0.95</version>
    </parent>

    <artifactId>moquette-broker</artifactId>
@@ -18,37 +18,45 @@
    </properties>

    <dependencies>
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-api</artifactId>
-            <version>1.7.5</version>
-        </dependency>
-
-        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-log4j12</artifactId>
-            <version>1.7.5</version>
-        </dependency>
-
        <dependency>
            <groupId>cn.wildfirechat</groupId>
            <artifactId>common</artifactId>
            <version>${project.version}</version>
        </dependency>

-        <!-- https://mvnrepository.com/artifact/log4j/log4j -->
        <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.17</version>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>2.17.2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-api</artifactId>
+            <version>2.17.2</version>
+        </dependency>
+        <!--用于与slf4j保持桥接-->
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-slf4j-impl</artifactId>
+            <version>2.17.2</version>
+        </dependency>
+        <!-- slf4j核心包-->
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>1.7.25</version>
+        </dependency>
+        <dependency>
+            <groupId>com.lmax</groupId>
+            <artifactId>disruptor</artifactId>
+            <version>3.4.1</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
-            <version>8.0.19</version>
+            <version>8.0.28</version>
        </dependency>

        <dependency>
@@ -226,6 +234,11 @@
            <version>3.4.1</version>
        </dependency>

+        <dependency>
+            <groupId>org.apache.tika</groupId>
+            <artifactId>tika-core</artifactId>
+            <version>2.4.1</version>
+        </dependency>
    </dependencies>


@@ -11,6 +11,7 @@ package cn.wildfirechat.push;
 import cn.wildfirechat.common.IMExceptionEvent;
 import cn.wildfirechat.proto.ProtoConstants;
 import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 import io.moquette.persistence.MemorySessionStore;
 import io.moquette.server.config.IConfig;
 import io.moquette.spi.ISessionsStore;
@@ -29,7 +30,7 @@ import static win.liyufan.im.HttpUtils.HttpPostType.POST_TYPE_Push;

 public class PushServer {
    private static final Logger LOG = LoggerFactory.getLogger(PushServer.class);
-
+    protected static final Gson gson = new GsonBuilder().disableHtmlEscaping().create();
    public interface PushMessageType {
        int PUSH_MESSAGE_TYPE_NORMAL = 0;
        int PUSH_MESSAGE_TYPE_VOIP_INVITE = 1;
@@ -100,7 +101,7 @@ public class PushServer {
                url = iOSPushServerUrl;
                pushMessage.voipDeviceToken = session.getVoipDeviceToken();
            }
-            HttpUtils.httpJsonPost(url, new Gson().toJson(pushMessage, pushMessage.getClass()), POST_TYPE_Push);
+            HttpUtils.httpJsonPost(url, gson.toJson(pushMessage, pushMessage.getClass()), POST_TYPE_Push);
        } else {
            LOG.info("Not mobile platform {}", session.getPlatform());
        }
@@ -9,6 +9,7 @@
 package com.xiaoleilu.loServer.action;

 import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 import com.xiaoleilu.loServer.RestResult;
 import com.xiaoleilu.loServer.annotation.RequireAuthentication;
 import com.xiaoleilu.loServer.handler.Request;
@@ -39,7 +40,7 @@ import static io.moquette.BrokerConstants.*;
 abstract public class Action {
    public static IMessagesStore messagesStore = null;
    public static ISessionsStore sessionsStore = null;
-
+    protected static final Gson gson = new GsonBuilder().disableHtmlEscaping().create();
    public ChannelHandlerContext ctx;

    protected static RateLimiter adminLimiter = null;
@@ -129,7 +130,7 @@ abstract public class Action {
            }

            RestResult result = RestResult.resultOf(errorCode, errorCode.getMsg(), RestResult.resultOf(errorCode));
-            response.setContent(new Gson().toJson(result));
+            response.setContent(gson.toJson(result));
            response.send();
        }

@@ -145,7 +146,7 @@ abstract public class Action {
            FullHttpRequest fullHttpRequest = (FullHttpRequest) request;
            byte[] bytes = Utils.readBytesAndRewind(fullHttpRequest.content());
            String content = new String(bytes, StandardCharsets.UTF_8);//contribute by JiaRG from github
-            Gson gson = new Gson();
+            
            T t = gson.fromJson(content, cls);
            return t;
        }
@@ -154,6 +155,6 @@ abstract public class Action {

    protected void setResponseContent(RestResult result, Response response) {
        response.setStatus(HttpResponseStatus.OK);
-        response.setContent(new Gson().toJson(result));
+        response.setContent(gson.toJson(result));
    }
 }
@@ -131,7 +131,8 @@ public class UploadFileAction extends Action {
                }

                readHttpDataChunkByChunk(response, decoder, requestId, HttpHeaders.isKeepAlive(request));
-
+                decoder.destroy();
+                
                if (chunk instanceof LastHttpContent) {

                }
@@ -34,7 +34,7 @@ public class VersionAction extends Action {

            try {

-                response.setContent(Utility.formatJson(new Gson().toJson(GitRepositoryState.getGitRepositoryState())));
+                response.setContent(Utility.formatJson(gson.toJson(GitRepositoryState.getGitRepositoryState())));
            } catch (IOException e) {
                e.printStackTrace();
                response.setContent("{\"version\":\"unknown\"}");
@@ -34,6 +34,10 @@ abstract public class AdminAction extends Action {
        SECRET_KEY = secretKey;
    }

+    public static String getSecretKey() {
+        return SECRET_KEY;
+    }
+
    public static void setNoCheckTime(String noCheckTime) {
        try {
            NO_CHECK_TIME = Boolean.parseBoolean(noCheckTime);
@@ -95,7 +99,7 @@ abstract public class AdminAction extends Action {
            }

            RestResult result = RestResult.resultOf(errorCode, errorCode.getMsg(), data);
-            response.setContent(new Gson().toJson(result));
+            response.setContent(gson.toJson(result));
            response.send();
        }
    }
@@ -108,7 +112,7 @@ abstract public class AdminAction extends Action {
    }

    protected void sendApiMessage(Response response, String fromUser, String clientId, String topic, byte[] message, ApiCallback callback, boolean noAdmin) {
-        ServerAPIHelper.sendRequest(fromUser, clientId, topic, message, new ServerAPIHelper.Callback() {
+        ServerAPIHelper.sendRequest(fromUser, clientId, topic, message, callback == null ? null : new ServerAPIHelper.Callback() {
            @Override
            public void onSuccess(byte[] result) {
                if(callback != null) {
@@ -0,0 +1,58 @@
+package com.xiaoleilu.loServer.action.admin;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputApplicationGetUserInfo;
+import cn.wildfirechat.pojos.OutputApplicationUserInfo;
+import cn.wildfirechat.proto.ProtoConstants;
+import cn.wildfirechat.proto.WFCMessage;
+import com.google.gson.Gson;
+import com.hazelcast.util.StringUtil;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.HttpResponseStatus;
+
+@Route(APIPath.User_Application_Get_UserInfo)
+@HttpMethod("POST")
+public class ApplicationGetUserInfoAction extends AdminAction {
+
+    @Override
+    public boolean isTransactionAction() {
+        return true;
+    }
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            InputApplicationGetUserInfo inputUserToken = getRequestBody(request.getNettyRequest(), InputApplicationGetUserInfo.class);
+
+            RestResult result;
+            if (inputUserToken == null || StringUtil.isNullOrEmpty(inputUserToken.getAuthCode())) {
+                result = RestResult.resultOf(ErrorCode.INVALID_PARAMETER);
+            } else {
+                String userId = messagesStore.verifyApplicationAuthCode(inputUserToken.getAuthCode(), "admin", ProtoConstants.ApplicationType.ApplicationType_Admin);
+                if(userId != null) {
+                    OutputApplicationUserInfo outputVerifyApplicationUser = new OutputApplicationUserInfo();
+                    outputVerifyApplicationUser.setUserId(userId);
+                    WFCMessage.User user = messagesStore.getUserInfo(userId);
+                    if(user != null) {
+                        outputVerifyApplicationUser.setDisplayName(user.getDisplayName());
+                        outputVerifyApplicationUser.setPortraitUrl(user.getPortrait());
+                    }
+                    result = RestResult.ok(outputVerifyApplicationUser);
+                } else {
+                    result = RestResult.resultOf(ErrorCode.ERROR_CODE_TOKEN_ERROR);
+                }
+            }
+
+            response.setStatus(HttpResponseStatus.OK);
+            response.setContent(gson.toJson(result));
+        }
+        return true;
+    }
+}
+
@@ -42,7 +42,7 @@ public class BlockUserAction extends AdminAction {
                response.setStatus(HttpResponseStatus.OK);
                RestResult result;
                result = RestResult.resultOf(errorCode);
-                response.setContent(new Gson().toJson(result));
+                response.setContent(gson.toJson(result));

                if (inputUserBlock.getStatus() == 2) {
                    sendApiMessage(null, null, ServerAPIHelper.KICKOFF_USER_REQUEST, inputUserBlock.getUserId().getBytes(), null);
@@ -0,0 +1,62 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package com.xiaoleilu.loServer.action.admin;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputChannelSubscribe;
+import cn.wildfirechat.pojos.InputCreateChannel;
+import cn.wildfirechat.pojos.InputSubscribeChannel;
+import cn.wildfirechat.pojos.OutputCreateChannel;
+import cn.wildfirechat.proto.ProtoConstants;
+import cn.wildfirechat.proto.WFCMessage;
+import com.google.gson.Gson;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.action.channel.ChannelAction;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.util.internal.StringUtil;
+import win.liyufan.im.IMTopic;
+
+@Route(APIPath.Subscribe_Channel)
+@HttpMethod("POST")
+public class ChannelSubscriberAction extends AdminAction {
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            InputSubscribeChannel inputSubscribeChannel = getRequestBody(request.getNettyRequest(), InputSubscribeChannel.class);
+            if (inputSubscribeChannel != null
+                && !io.netty.util.internal.StringUtil.isNullOrEmpty(inputSubscribeChannel.getChannelId())
+                && !io.netty.util.internal.StringUtil.isNullOrEmpty(inputSubscribeChannel.getUserId())) {
+
+                WFCMessage.ListenChannel.Builder builder = WFCMessage.ListenChannel.newBuilder().setChannelId(inputSubscribeChannel.getChannelId()).setListen(inputSubscribeChannel.getSubscribe());
+                sendApiMessage(response, inputSubscribeChannel.getUserId(), IMTopic.ChannelListenTopic, builder.build().toByteArray(), result -> {
+                    ErrorCode errorCode = ErrorCode.fromCode(result[0]);
+                    if (errorCode == ErrorCode.ERROR_CODE_SUCCESS) {
+                        return new Result(ErrorCode.ERROR_CODE_SUCCESS);
+                    } else {
+                        return new Result(errorCode);
+                    }
+                });
+                return false;
+            } else {
+                setResponseContent(RestResult.resultOf(ErrorCode.INVALID_PARAMETER), response);
+            }
+
+        }
+        return true;
+    }
+}
@@ -36,7 +36,7 @@ public class CheckUserOnlineAction extends AdminAction {
            InputGetUserInfo inputUserId = getRequestBody(request.getNettyRequest(), InputGetUserInfo.class);
            if (inputUserId == null || !StringUtil.isNullOrEmpty(inputUserId.getUserId())) {
                sendApiMessage(response, inputUserId.getUserId(), ServerAPIHelper.CHECK_USER_ONLINE_REQUEST, inputUserId.getUserId().getBytes(), res -> {
-                    OutputCheckUserOnline out = new Gson().fromJson(new String(res), OutputCheckUserOnline.class);
+                    OutputCheckUserOnline out = gson.fromJson(new String(res), OutputCheckUserOnline.class);
                    return new Result(ErrorCode.ERROR_CODE_SUCCESS, out);
                });
                return false;
@@ -0,0 +1,52 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package com.xiaoleilu.loServer.action.admin;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputChannelId;
+import cn.wildfirechat.pojos.InputSubscribeChannel;
+import cn.wildfirechat.pojos.OutputBooleanValue;
+import cn.wildfirechat.pojos.OutputGetChannelInfo;
+import cn.wildfirechat.proto.WFCMessage;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.util.internal.StringUtil;
+
+@Route(APIPath.Check_User_Subscribe_Channel)
+@HttpMethod("POST")
+public class CheckUserSubscribeChannelAction extends AdminAction {
+
+    @Override
+    public boolean isTransactionAction() {
+        return true;
+    }
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            InputSubscribeChannel inputSubscribeChannel = getRequestBody(request.getNettyRequest(), InputSubscribeChannel.class);
+            if (inputSubscribeChannel != null
+                && !StringUtil.isNullOrEmpty(inputSubscribeChannel.getChannelId())
+                && !StringUtil.isNullOrEmpty(inputSubscribeChannel.getUserId())) {
+                boolean isInChannel = messagesStore.checkUserInChannel(inputSubscribeChannel.getUserId(), inputSubscribeChannel.getChannelId());
+                OutputBooleanValue outputBooleanValue = new OutputBooleanValue();
+                outputBooleanValue.value = isInChannel;
+                setResponseContent(RestResult.ok(outputBooleanValue), response);
+            } else {
+                setResponseContent(RestResult.resultOf(ErrorCode.INVALID_PARAMETER), response);
+            }
+        }
+        return true;
+    }
+}
@@ -39,7 +39,7 @@ public class CreateChatroomAction extends AdminAction {
            FullHttpRequest fullHttpRequest = (FullHttpRequest)request.getNettyRequest();
            byte[] bytes = Utils.readBytesAndRewind(fullHttpRequest.content());
            String content = new String(bytes);
-            Gson gson = new Gson();
+            
            InputCreateChatroom inputCreateChatroom = gson.fromJson(content, InputCreateChatroom.class);
            if (inputCreateChatroom != null
                && !StringUtil.isNullOrEmpty(inputCreateChatroom.getTitle())) {
@@ -67,7 +67,7 @@ public class CreateRobotAction extends AdminAction {
                    Utility.printExecption(LOG, e, IMExceptionEvent.EventType.ADMIN_API_Exception);
                    response.setStatus(HttpResponseStatus.OK);
                    RestResult result = RestResult.resultOf(ErrorCode.ERROR_CODE_SERVER_ERROR, e.getMessage());
-                    response.setContent(new Gson().toJson(result));
+                    response.setContent(gson.toJson(result));
                    return true;
                }

@@ -37,7 +37,7 @@ public class DestoryChatroomAction extends AdminAction {
            FullHttpRequest fullHttpRequest = (FullHttpRequest)request.getNettyRequest();
            byte[] bytes = Utils.readBytesAndRewind(fullHttpRequest.content());
            String content = new String(bytes);
-            Gson gson = new Gson();
+            
            InputDestoryChatroom inputDestoryChatroom = gson.fromJson(content, InputDestoryChatroom.class);
            if (inputDestoryChatroom != null
                && !StringUtil.isNullOrEmpty(inputDestoryChatroom.getChatroomId())) {
@@ -63,6 +63,7 @@ public class GetGroupMembersAction extends AdminAction {
                        pm.setAlias(member.getAlias());
                        pm.setType(member.getType());
                        pm.setExtra(member.getExtra());
+                        pm.setCreateDt(member.getCreateDt());
                        out.getMembers().add(pm);
                    }
                    result = RestResult.ok(out);
@@ -0,0 +1,56 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package com.xiaoleilu.loServer.action.admin;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputMessageUid;
+import cn.wildfirechat.pojos.OutputMessageData;
+import cn.wildfirechat.pojos.RecallMessageData;
+import cn.wildfirechat.proto.WFCMessage;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.util.internal.StringUtil;
+import win.liyufan.im.IMTopic;
+
+@Route(APIPath.Msg_GetOne)
+@HttpMethod("POST")
+public class GetMessageAction extends AdminAction {
+
+    @Override
+    public boolean isTransactionAction() {
+        return true;
+    }
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            InputMessageUid inputMessageUid = getRequestBody(request.getNettyRequest(), InputMessageUid.class);
+            if (inputMessageUid != null && inputMessageUid.messageUid > 0) {
+                RestResult result;
+                WFCMessage.Message msg = messagesStore.getMessage(inputMessageUid.messageUid);
+                if(msg == null) {
+                    result = RestResult.resultOf(ErrorCode.ERROR_CODE_NOT_EXIST);
+                } else {
+                    result = RestResult.ok(OutputMessageData.fromProtoMessage(msg));
+                }
+                setResponseContent(result, response);
+            } else {
+                setResponseContent(RestResult.resultOf(ErrorCode.INVALID_PARAMETER), response);
+            }
+        }
+        return true;
+    }
+}
@@ -0,0 +1,63 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package com.xiaoleilu.loServer.action.admin;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputGetUserInfo;
+import cn.wildfirechat.pojos.InputOutputUserInfo;
+import cn.wildfirechat.pojos.InputRobotId;
+import cn.wildfirechat.pojos.OutputRobot;
+import cn.wildfirechat.proto.WFCMessage;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.util.internal.StringUtil;
+
+@Route(APIPath.User_Get_Robot_Info)
+@HttpMethod("POST")
+public class GetRobotAction extends AdminAction {
+
+    @Override
+    public boolean isTransactionAction() {
+        return true;
+    }
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            InputRobotId inputUserId = getRequestBody(request.getNettyRequest(), InputRobotId.class);
+            if (inputUserId != null
+                && (!StringUtil.isNullOrEmpty(inputUserId.getRobotId()))) {
+
+                WFCMessage.User user = messagesStore.getUserInfo(inputUserId.getRobotId());
+                WFCMessage.Robot robot = messagesStore.getRobot(inputUserId.getRobotId());
+
+                RestResult result;
+                if (user == null || robot == null) {
+                    result = RestResult.resultOf(ErrorCode.ERROR_CODE_NOT_EXIST);
+                } else {
+                    OutputRobot outputRobot = new OutputRobot();
+                    outputRobot.fromUser(user);
+                    outputRobot.fromRobot(robot, true);
+                    result = RestResult.ok(outputRobot);
+                }
+
+                setResponseContent(result, response);
+            } else {
+                setResponseContent(RestResult.resultOf(ErrorCode.INVALID_PARAMETER), response);
+            }
+
+        }
+        return true;
+    }
+}
@@ -50,7 +50,7 @@ public class ModifyGroupMemberExtraAction extends AdminAction {
            } else {
                response.setStatus(HttpResponseStatus.OK);
                RestResult result = RestResult.resultOf(ErrorCode.INVALID_PARAMETER);
-                response.setContent(new Gson().toJson(result));
+                response.setContent(gson.toJson(result));
            }
        }
        return true;
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package com.xiaoleilu.loServer.action.channel;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputApplicationGetUserInfo;
+import cn.wildfirechat.pojos.OutputApplicationUserInfo;
+import cn.wildfirechat.proto.ProtoConstants;
+import cn.wildfirechat.proto.WFCMessage;
+import com.google.gson.Gson;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.util.internal.StringUtil;
+
+@Route(APIPath.Channel_Application_Get_UserInfo)
+@HttpMethod("POST")
+public class ApplicationGetUserInfoAction extends ChannelAction {
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            InputApplicationGetUserInfo inputUserToken = getRequestBody(request.getNettyRequest(), InputApplicationGetUserInfo.class);
+            RestResult result;
+            if (inputUserToken == null || StringUtil.isNullOrEmpty(inputUserToken.getAuthCode())) {
+                result = RestResult.resultOf(ErrorCode.INVALID_PARAMETER);
+            } else {
+                String userId = messagesStore.verifyApplicationAuthCode(inputUserToken.getAuthCode(), channelInfo.getTargetId(), ProtoConstants.ApplicationType.ApplicationType_Channel);
+                if(userId != null) {
+                    OutputApplicationUserInfo outputVerifyApplicationUser = new OutputApplicationUserInfo();
+                    outputVerifyApplicationUser.setUserId(userId);
+                    WFCMessage.User user = messagesStore.getUserInfo(userId);
+                    if(user != null) {
+                        outputVerifyApplicationUser.setDisplayName(user.getDisplayName());
+                        outputVerifyApplicationUser.setPortraitUrl(user.getPortrait());
+                    }
+                    result = RestResult.ok(outputVerifyApplicationUser);
+                } else {
+                    result = RestResult.resultOf(ErrorCode.ERROR_CODE_APPLICATION_TOKEN_ERROR_OR_TIMEOUT);
+                }
+            }
+
+            response.setStatus(HttpResponseStatus.OK);
+            response.setContent(gson.toJson(result));
+        }
+        return true;
+    }
+}
@@ -70,6 +70,7 @@ abstract public class ChannelAction extends Action {
        try {
            ts = Long.parseLong(timestamp);
        } catch (Exception e) {
+            LOG.error("Channel timestamp:{} invalid", timestamp);
            e.printStackTrace();
            Utility.printExecption(LOG, e, IMExceptionEvent.EventType.CHANNEL_API_Exception);
            return ErrorCode.ERROR_CODE_API_NOT_SIGNED;
@@ -81,7 +82,7 @@ abstract public class ChannelAction extends Action {

        channelInfo = messagesStore.getChannelInfo(cid);
        if (channelInfo == null) {
-            return ErrorCode.INVALID_PARAMETER;
+            return ErrorCode.ERROR_CODE_CHANNEL_NO_EXIST;
        }
        
        if (StringUtil.isNullOrEmpty(channelInfo.getSecret())) {
@@ -100,7 +101,7 @@ abstract public class ChannelAction extends Action {
        }

        RestResult result = RestResult.resultOf(errorCode, errorCode.getMsg(), data);
-        response.setContent(new Gson().toJson(result));
+        response.setContent(gson.toJson(result));
        response.send();
    }

@@ -109,7 +110,7 @@ abstract public class ChannelAction extends Action {
            FullHttpRequest fullHttpRequest = (FullHttpRequest) request;
            byte[] bytes = Utils.readBytesAndRewind(fullHttpRequest.content());
            String content = new String(bytes, StandardCharsets.UTF_8);
-            Gson gson = new Gson();
+            
            T t = gson.fromJson(content, cls);
            return t;
        }
@@ -14,16 +14,12 @@ import cn.wildfirechat.pojos.InputGetUserInfo;
 import cn.wildfirechat.pojos.InputOutputUserInfo;
 import cn.wildfirechat.proto.ProtoConstants;
 import cn.wildfirechat.proto.WFCMessage;
-import com.google.gson.Gson;
 import com.xiaoleilu.loServer.RestResult;
-import com.xiaoleilu.loServer.action.admin.AdminAction;
-import com.xiaoleilu.loServer.action.robot.RobotAction;
 import com.xiaoleilu.loServer.annotation.HttpMethod;
 import com.xiaoleilu.loServer.annotation.Route;
 import com.xiaoleilu.loServer.handler.Request;
 import com.xiaoleilu.loServer.handler.Response;
 import io.netty.handler.codec.http.FullHttpRequest;
-import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.util.internal.StringUtil;

@Route(APIPath.Channel_User_Info)
@@ -12,7 +12,6 @@ package com.xiaoleilu.loServer.action.channel;
 import cn.wildfirechat.common.APIPath;
 import cn.wildfirechat.pojos.SendChannelMessageData;
 import cn.wildfirechat.proto.ProtoConstants;
-import com.google.gson.Gson;
 import com.xiaoleilu.loServer.RestResult;
 import com.xiaoleilu.loServer.annotation.HttpMethod;
 import com.xiaoleilu.loServer.annotation.Route;
@@ -24,7 +23,6 @@ import cn.wildfirechat.pojos.SendMessageResult;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.handler.codec.http.FullHttpRequest;
-import io.netty.handler.codec.http.HttpResponseStatus;
 import cn.wildfirechat.common.ErrorCode;
 import win.liyufan.im.IMTopic;

@@ -38,7 +38,7 @@ public class SubscriberChannelAction extends ChannelAction {
                if(input.getSubscribe() > 0 && (channelInfo.getStatus() & ProtoConstants.ChannelState.Channel_State_Mask_Active_Subscribe) == 0) {
                    response.setStatus(HttpResponseStatus.OK);
                    RestResult result = RestResult.resultOf(ErrorCode.ERROR_CODE_NOT_RIGHT);
-                    response.setContent(new Gson().toJson(result));
+                    response.setContent(gson.toJson(result));
                    return true;
                }
                WFCMessage.ListenChannel listenChannel = WFCMessage.ListenChannel.newBuilder().setChannelId(channelInfo.getTargetId()).setListen(input.getSubscribe()).build();
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package com.xiaoleilu.loServer.action.robot;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputApplicationGetUserInfo;
+import cn.wildfirechat.pojos.OutputApplicationUserInfo;
+import cn.wildfirechat.proto.ProtoConstants;
+import cn.wildfirechat.proto.WFCMessage;
+import com.google.gson.Gson;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.util.internal.StringUtil;
+
+@Route(APIPath.Robot_Application_Get_UserInfo)
+@HttpMethod("POST")
+public class ApplicationGetUserInfoAction extends RobotAction {
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            InputApplicationGetUserInfo inputUserToken = getRequestBody(request.getNettyRequest(), InputApplicationGetUserInfo.class);
+            RestResult result;
+            if (inputUserToken == null || StringUtil.isNullOrEmpty(inputUserToken.getAuthCode())) {
+                result = RestResult.resultOf(ErrorCode.INVALID_PARAMETER);
+            } else {
+                String userId = messagesStore.verifyApplicationAuthCode(inputUserToken.getAuthCode(), robot.getUid(), ProtoConstants.ApplicationType.ApplicationType_Robot);
+                if(userId != null) {
+                    OutputApplicationUserInfo outputVerifyApplicationUser = new OutputApplicationUserInfo();
+                    outputVerifyApplicationUser.setUserId(userId);
+                    WFCMessage.User user = messagesStore.getUserInfo(userId);
+                    if(user != null) {
+                        outputVerifyApplicationUser.setDisplayName(user.getDisplayName());
+                        outputVerifyApplicationUser.setPortraitUrl(user.getPortrait());
+                    }
+                    result = RestResult.ok(outputVerifyApplicationUser);
+                } else {
+                    result = RestResult.resultOf(ErrorCode.ERROR_CODE_APPLICATION_TOKEN_ERROR_OR_TIMEOUT);
+                }
+            }
+
+            response.setStatus(HttpResponseStatus.OK);
+            response.setContent(gson.toJson(result));
+        }
+        return true;
+    }
+}
@@ -67,6 +67,7 @@ public class GetGroupMembersAction extends RobotAction {
                        pm.setAlias(member.getAlias());
                        pm.setType(member.getType());
                        pm.setExtra(member.getExtra());
+                        pm.setCreateDt(member.getCreateDt());
                        out.getMembers().add(pm);
                    }
                    if(!isInGroup) {
@@ -0,0 +1,46 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package com.xiaoleilu.loServer.action.robot;
+
+import cn.wildfirechat.common.APIPath;
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.pojos.InputGetUserInfo;
+import cn.wildfirechat.pojos.InputOutputUserInfo;
+import cn.wildfirechat.pojos.OutputRobot;
+import cn.wildfirechat.proto.WFCMessage;
+import com.xiaoleilu.loServer.RestResult;
+import com.xiaoleilu.loServer.annotation.HttpMethod;
+import com.xiaoleilu.loServer.annotation.Route;
+import com.xiaoleilu.loServer.handler.Request;
+import com.xiaoleilu.loServer.handler.Response;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.util.internal.StringUtil;
+
+@Route(APIPath.Robot_Get_Profile)
+@HttpMethod("POST")
+public class GetProfileAction extends RobotAction {
+
+    @Override
+    public boolean action(Request request, Response response) {
+        if (request.getNettyRequest() instanceof FullHttpRequest) {
+            WFCMessage.User user = messagesStore.getUserInfo(robot.getUid());
+            RestResult result;
+            if (user == null) {
+                result = RestResult.resultOf(ErrorCode.ERROR_CODE_NOT_EXIST);
+            } else {
+                OutputRobot outputRobot = new OutputRobot();
+                outputRobot.fromUser(user);
+                outputRobot.fromRobot(robot, false);
+                result = RestResult.ok(outputRobot);
+            }
+            setResponseContent(result, response);
+        }
+        return true;
+    }
+}
@@ -53,7 +53,7 @@ public class ModifyGroupMemberExtraAction extends RobotAction {
            } else {
                response.setStatus(HttpResponseStatus.OK);
                RestResult result = RestResult.resultOf(ErrorCode.INVALID_PARAMETER);
-                response.setContent(new Gson().toJson(result));
+                response.setContent(gson.toJson(result));
            }
        }
        return true;
@@ -102,7 +102,7 @@ abstract public class RobotAction extends Action {
        }

        RestResult result = RestResult.resultOf(errorCode, errorCode.getMsg(), data);
-        response.setContent(new Gson().toJson(result));
+        response.setContent(gson.toJson(result));
        response.send();
    }

@@ -113,7 +113,7 @@ abstract public class RobotAction extends Action {
            String content = null;
            try {
                content = new String(bytes, "UTF-8");
-                Gson gson = new Gson();
+                
                T t = gson.fromJson(content, cls);
                return t;
            } catch (UnsupportedEncodingException e) {
@@ -114,6 +114,13 @@ abstract public class ActionHandler extends SimpleChannelInboundHandler<FullHttp
 	        handleOptions(ctx, request, response);
 	        return;
        }
+
+        if ("HEAD".equalsIgnoreCase(request.getMethod())) {
+            response.setStatus(HttpResponseStatus.OK);
+            response.send();
+            return;
+        }
+
 		Action action;
 		if (isValidePath(request.getPath())) {
            action = ServerSetting.getAction(request.getPath(), request.getMethod().toUpperCase());
@@ -81,18 +81,6 @@ public class Request {

 		// request URI parameters
 		this.putParams(new QueryStringDecoder(uri));
-		if(nettyRequest.method() != HttpMethod.GET){
-			HttpPostRequestDecoder decoder = null;
-			try {
-				decoder = new HttpPostRequestDecoder(HTTP_DATA_FACTORY, nettyRequest);
-				this.putParams(decoder);
-			} finally {
-				if(null != decoder){
-					decoder.destroy();
-					decoder = null;
-				}
-			}
-		}

 		// IP
 		this.putIp(ctx);
@@ -41,6 +41,7 @@ import io.netty.handler.codec.http.LastHttpContent;
 import io.netty.handler.codec.http.cookie.Cookie;
 import io.netty.handler.codec.http.cookie.DefaultCookie;
 import io.netty.handler.codec.http.cookie.ServerCookieEncoder;
+import org.apache.tika.Tika;
 import org.slf4j.LoggerFactory;

 /**
@@ -469,7 +470,9 @@ public class Response {
 		this.setContentLength(fileLength);
 		
 		//文件类型
-		String contentType = HttpUtil.getMimeType(file.getName());
+        Tika tika = new Tika();
+        String contentType = tika.detect(file);
+//		String contentType = HttpUtil.getMimeType(file.getName());
 		if(StrUtil.isBlank(contentType)){
 			//无法识别默认使用数据流
 			contentType = "application/octet-stream";
@@ -120,16 +120,19 @@ public final class BrokerConstants {
    public static final String SENSITIVE_Remote_Fail_When_Matched = "sensitive.remote_fail_when_matched";

    public static final String MESSAGE_Forward_Url = "message.forward.url";
+    public static final String MESSAGE_Sensitive_Forward_Url = "message.sensitive.forward.url";
    public static final String MESSAGE_Forward_Types = "message.forward.types";
    public static final String MESSAGE_MentionMsg_Forward_Url = "message.mentionmsg.forward.url";


    public static final String SERVER_MULTI_ENDPOINT = "server.multi_endpoint";
+    public static final String SERVER_MULTI_PC_ENDPOINT = "server.multi_pc_endpoint";
    public static final String SERVER_MULTI_PLATFROM_NOTIFICATION = "server.multi_platform_notification";
    public static final String SERVER_MOBILE_DEFAULT_SILENT_WHEN_PC_ONLINE = "server.mobile_default_silent_when_pc_online";
    public static final String SERVER_CLIENT_SUPPORT_KICKOFF_EVENT = "server.client_support_kickoff_event";

    public static final String MESSAGE_ROAMING = "message.roaming";
+    public static final String MESSAGE_Compensate_Time_Limit = "message.compensate_time_limit";
    public static final String MESSAGE_Remote_History_Message = "message.remote_history_message";
    public static final String MESSAGE_Remote_Chatroom_History_Message = "message.chatroom_remote_history_message";

@@ -141,6 +144,10 @@ public final class BrokerConstants {

    public static final String MESSAGE_NO_Forward_Admin_Message = "message.no_forward_admin_message";

+    public static final String MESSAGE_Forward_With_Client_Info = "message.forward_with_client_info";
+    public static final String ROBOT_Callback_With_Client_Info = "robot.callback_with_client_info";
+    public static final String CHANNEL_Callback_With_Client_Info = "channel.callback_with_client_info";
+
    public static final String FRIEND_Disable_Search = "friend.disable_search";
    public static final String FRIEND_Disable_NickName_Search = "friend.disable_nick_name_search";
    public static final String FRIEND_Disable_Friend_Request = "friend.disable_friend_request";
@@ -160,6 +167,8 @@ public final class BrokerConstants {
    public static final String GROUP_Visible_Quit_Kickoff_Notification = "group.visible_quit_or_kickoff_notification";

    public static final String USER_HIDE_PROPERTIES = "user.hide_properties";
+    public static final String USER_KEEP_DISPLAY_NAME_WHEN_DESTROY = "user.keep_display_name_when_destroy";
+
    public static final String SYNC_Data_Part_Size = "sync.data_part_size";

    public static final String MESSAGES_FORBIDDEN_CLIENT_SEND_TYPES = "message.forbidden_client_send_types";
@@ -27,8 +27,6 @@ public class ChannelListenMember extends IMHandler<WFCMessage.ListenChannel> {
        if (errorCode == ErrorCode.ERROR_CODE_SUCCESS) {
            WFCMessage.ModifyUserSettingReq modifyUserSettingReq = WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingListenedChannels).setKey(request.getChannelId()).setValue(request.getListen() > 0 ? "1" : "0").build();
            mServer.onApiMessage(fromUser, null, modifyUserSettingReq.toByteArray(), 0, fromUser, PutUserSettingTopic, requestSourceType);
-
-            publisher.notifyChannelListenStatusChanged(m_messagesStore.getChannelInfo(request.getChannelId()), fromUser, request.getListen() > 0);
        }
        return errorCode;
    }
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package io.moquette.imhandler;
+
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.proto.ProtoConstants;
+import cn.wildfirechat.proto.WFCMessage;
+import io.moquette.spi.impl.Qos1PublishHandler;
+import io.netty.buffer.ByteBuf;
+import win.liyufan.im.IMTopic;
+
+import static cn.wildfirechat.common.ErrorCode.ERROR_CODE_SUCCESS;
+
+@Handler(IMTopic.ApplicationConfigRequestTopic)
+public class ConfigApplicationHandler extends IMHandler<WFCMessage.ApplicationConfigRequest> {
+    @Override
+    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.ApplicationConfigRequest request, Qos1PublishHandler.IMCallback callback) {
+        ErrorCode errorCode = m_messagesStore.configApplication(request.getAppId(), request.getAppType(), request.getTimestamp(), request.getNonce(), request.getSignature());
+        return errorCode;
+    }
+}
+
@@ -21,6 +21,9 @@ import win.liyufan.im.IMTopic;
 public class CreateGroupHandler extends GroupHandler<WFCMessage.CreateGroupRequest> {
    @Override
    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.CreateGroupRequest request, Qos1PublishHandler.IMCallback callback) {
+        if(request.getGroup().getGroupInfo().getType() < 0 || request.getGroup().getGroupInfo().getType() > 2) {
+            return ErrorCode.ERROR_CODE_INVALID_DATA;
+        }

        if (!StringUtil.isNullOrEmpty(request.getGroup().getGroupInfo().getTargetId())) {
            WFCMessage.GroupInfo existGroupInfo = m_messagesStore.getGroupInfo(request.getGroup().getGroupInfo().getTargetId());
@@ -19,11 +19,11 @@ import static win.liyufan.im.IMTopic.PutUserSettingTopic;
 import static win.liyufan.im.UserSettingScope.kUserSettingMyChannels;

@Handler(value = IMTopic.DestroyChannelInfoTopic)
-public class DistroyChannelHandler extends GroupHandler<WFCMessage.IDBuf> {
+public class DestroyChannelHandler extends GroupHandler<WFCMessage.IDBuf> {
    @Override
    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.IDBuf request, Qos1PublishHandler.IMCallback callback) {
        boolean isAdmin = requestSourceType == ProtoConstants.RequestSourceType.Request_From_Admin;
-        ErrorCode errorCode = m_messagesStore.distoryChannel(fromUser, request.getId(), isAdmin);
+        ErrorCode errorCode = m_messagesStore.destroyChannel(fromUser, request.getId(), isAdmin);
        if (errorCode == ErrorCode.ERROR_CODE_SUCCESS) {
            WFCMessage.ModifyUserSettingReq modifyUserSettingReq = WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingMyChannels).setKey(request.getId()).setValue("0").build();
            mServer.onApiMessage(fromUser, null, modifyUserSettingReq.toByteArray(), 0, fromUser, PutUserSettingTopic, requestSourceType);
@@ -11,9 +11,7 @@ package io.moquette.imhandler;
 import cn.wildfirechat.common.ErrorCode;
 import cn.wildfirechat.proto.ProtoConstants;
 import cn.wildfirechat.proto.WFCMessage;
-import io.moquette.persistence.MemorySessionStore;
 import io.moquette.spi.impl.Qos1PublishHandler;
-import io.moquette.spi.impl.security.TokenAuthenticator;
 import io.netty.buffer.ByteBuf;
 import win.liyufan.im.IMTopic;

@@ -30,7 +28,7 @@ public class DestroyUserHandler extends IMHandler<WFCMessage.IDBuf> {
                m_messagesStore.clearUserFriend(fromUser);
                m_messagesStore.clearUserGroups(fromUser);
                m_messagesStore.clearUserChannels(fromUser);
-                m_messagesStore.destoryUser(fromUser);
+                m_messagesStore.destroyUser(fromUser);

                m_messagesStore.destroyRobot(fromUser);
            });
@@ -0,0 +1,33 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package io.moquette.imhandler;
+
+import cn.wildfirechat.common.ErrorCode;
+import cn.wildfirechat.proto.ProtoConstants;
+import cn.wildfirechat.proto.WFCMessage;
+import io.moquette.spi.impl.Qos1PublishHandler;
+import io.netty.buffer.ByteBuf;
+import win.liyufan.im.IMTopic;
+
+import static cn.wildfirechat.common.ErrorCode.ERROR_CODE_SUCCESS;
+
+@Handler(IMTopic.GetApplicationTokenRequestTopic)
+public class GetApplicationTokenHandler extends IMHandler<WFCMessage.AuthCodeRequest> {
+    @Override
+    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.AuthCodeRequest request, Qos1PublishHandler.IMCallback callback) {
+        String authCode = m_messagesStore.getApplicationAuthCode(fromUser, request.getTargetId(), request.getType(), request.getHost());
+        if(authCode != null) {
+            byte[] data = WFCMessage.IDBuf.newBuilder().setId(authCode).build().toByteArray();
+            ackPayload.ensureWritable(data.length).writeBytes(data);
+            return ERROR_CODE_SUCCESS;
+        }
+        return ErrorCode.INVALID_PARAMETER;
+
+    }
+}
@@ -26,6 +26,7 @@ public class GetQiniuUploadTokenHandler extends IMHandler<Byte> {
        String token;

        WFCMessage.GetUploadTokenResult.Builder resultBuilder = WFCMessage.GetUploadTokenResult.newBuilder();
+
        if (MediaServerConfig.USER_QINIU) {
            Auth auth = Auth.create(MediaServerConfig.QINIU_ACCESS_KEY, MediaServerConfig.QINIU_SECRET_KEY);

@@ -43,7 +43,7 @@ abstract public class GroupHandler<T> extends IMHandler<T> {
            try {
                long messageId = MessageShardingUtil.generateId();
                builder.setMessageId(messageId);
-                saveAndPublish(fromUser, null, builder.build());
+                saveAndPublish(fromUser, null, builder.build(), ProtoConstants.RequestSourceType.Request_From_User);
            } catch (Exception e) {
                e.printStackTrace();
            }
@@ -28,7 +28,7 @@ public class HandleFriendRequestHandler extends IMHandler<WFCMessage.HandleFrien
    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.HandleFriendRequest request, Qos1PublishHandler.IMCallback callback) {
            WFCMessage.Message.Builder builder = WFCMessage.Message.newBuilder();
            builder.setFromUser(request.getTargetUid());
-            long[] heads = new long[2];
+            long[] heads = new long[4];
            boolean isAdmin = requestSourceType == ProtoConstants.RequestSourceType.Request_From_Admin;
            ErrorCode errorCode = m_messagesStore.handleFriendRequest(fromUser, request, builder, heads, isAdmin);

@@ -40,7 +40,7 @@ public class HandleFriendRequestHandler extends IMHandler<WFCMessage.HandleFrien
                        builder.setMessageId(messageId);
                        builder.setServerTimestamp(timestamp);
                        if(!StringUtil.isNullOrEmpty(builder.getContent().getSearchableContent())) {
-                            saveAndPublish(request.getTargetUid(), null, builder.build());
+                            saveAndPublish(request.getTargetUid(), null, builder.build(), requestSourceType);
                        }

                        MemorySessionStore.Session session = m_sessionsStore.getSession(clientID);
@@ -63,7 +63,7 @@ public class HandleFriendRequestHandler extends IMHandler<WFCMessage.HandleFrien

                        messageId = MessageShardingUtil.generateId();
                        builder.setMessageId(messageId);
-                        saveAndPublish(request.getTargetUid(), null, builder.build());
+                        saveAndPublish(request.getTargetUid(), null, builder.build(), requestSourceType);

                        if (m_messagesStore.isNewFriendWelcomeMessage()) {
                            contentBuilder.setType(93);
@@ -75,7 +75,7 @@ public class HandleFriendRequestHandler extends IMHandler<WFCMessage.HandleFrien
                        messageId = MessageShardingUtil.generateId();
                        builder.setMessageId(messageId);
                        builder.setServerTimestamp(++timestamp);
-                        saveAndPublish(request.getTargetUid(), null, builder.build());
+                        saveAndPublish(request.getTargetUid(), null, builder.build(), requestSourceType);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
@@ -84,6 +84,14 @@ public class HandleFriendRequestHandler extends IMHandler<WFCMessage.HandleFrien
                    publisher.publishNotification(IMTopic.NotifyFriendTopic, request.getTargetUid(), heads[0]);
                    publisher.publishNotification(IMTopic.NotifyFriendTopic, fromUser, heads[1]);
                }
+                if(!isAdmin) {
+                    if(heads[2] > 0) {
+                        publisher.publishNotification(IMTopic.NotifyFriendRequestTopic, request.getTargetUid(), heads[2], fromUser, null);
+                    }
+                    if(heads[3] > 0) {
+                        publisher.publishNotification(IMTopic.NotifyFriendRequestTopic, fromUser, heads[3], fromUser, null);
+                    }
+                }
            }
            if(errorCode == ERROR_CODE_ALREADY_FRIENDS) {
                errorCode = ERROR_CODE_SUCCESS;
@@ -25,6 +25,7 @@ import io.netty.util.internal.StringUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import cn.wildfirechat.common.ErrorCode;
+import win.liyufan.im.GsonUtil;
 import win.liyufan.im.RateLimiter;
 import win.liyufan.im.Utility;

@@ -39,6 +40,8 @@ import java.util.*;
 import static cn.wildfirechat.common.ErrorCode.ERROR_CODE_OVER_FREQUENCY;
 import static cn.wildfirechat.common.ErrorCode.ERROR_CODE_SUCCESS;
 import static io.moquette.BrokerConstants.CLIENT_REQUEST_RATE_LIMIT;
+import static win.liyufan.im.IMTopic.GetUserSettingTopic;
+import static win.liyufan.im.IMTopic.PullMessageTopic;

 /**
 * 请求处理接口<br>
@@ -139,7 +142,7 @@ abstract public class IMHandler<T> {
 //         }

        //json ?
-        return (T)(new Gson().fromJson(new String(bytes), dataCls));
+        return (T)(GsonUtil.gson.fromJson(new String(bytes), dataCls));
    }

    public static void init(IMessagesStore ms, ISessionsStore ss, MessagesPublisher p, ThreadPoolExecutorWrapper businessExecutor, Server server) {
@@ -162,18 +165,17 @@ abstract public class IMHandler<T> {
        mLimitCounter = new RateLimiter(5, clientRateLimit);
    }

+    boolean isNotLimitTopic(String topic) {
+        if (PullMessageTopic.equals(topic)
+            || GetUserSettingTopic.equals(topic)) {
+            return true;
+        }
+        return false;
+    }

    public ErrorCode preAction(String clientID, String fromUser, String topic, Qos1PublishHandler.IMCallback callback, ProtoConstants.RequestSourceType requestSourceType) {
        LOG.info("imHandler fromUser={}, clientId={}, topic={}", fromUser, clientID, topic);
-        if(requestSourceType == ProtoConstants.RequestSourceType.Request_From_User && !mLimitCounter.isGranted(clientID + fromUser + topic)) {
-            ByteBuf ackPayload = Unpooled.buffer();
-            ackPayload.ensureWritable(1).writeByte(ERROR_CODE_OVER_FREQUENCY.getCode());
-            try {
-                callback.onIMHandled(ERROR_CODE_OVER_FREQUENCY, ackPayload);
-            } catch (Exception e) {
-                e.printStackTrace();
-                Utility.printExecption(LOG, e);
-            }
+        if(requestSourceType == ProtoConstants.RequestSourceType.Request_From_User && !isNotLimitTopic(topic) && !mLimitCounter.isGranted(clientID + fromUser + topic)) {
            return ErrorCode.ERROR_CODE_OVER_FREQUENCY;
        }
        return ErrorCode.ERROR_CODE_SUCCESS;
@@ -246,21 +248,21 @@ abstract public class IMHandler<T> {
    public void afterAction(String clientID, String fromUser, String topic, Qos1PublishHandler.IMCallback callback) {

    }
-    protected long publish(String username, String clientID, WFCMessage.Message message) {
+    protected long publish(String username, String clientID, WFCMessage.Message message, ProtoConstants.RequestSourceType requestSourceType) {
        Set<String> notifyReceivers = new LinkedHashSet<>();

        WFCMessage.Message.Builder messageBuilder = message.toBuilder();
-        int pullType = m_messagesStore.getNotifyReceivers(username, messageBuilder, notifyReceivers);
+        int pullType = m_messagesStore.getNotifyReceivers(username, messageBuilder, notifyReceivers, requestSourceType);
        mServer.getImBusinessScheduler().execute(() -> this.publisher.publish2Receivers(messageBuilder.build(), notifyReceivers, clientID, pullType));
        return notifyReceivers.size();
    }

-    protected long saveAndPublish(String username, String clientID, WFCMessage.Message message) {
+    protected long saveAndPublish(String username, String clientID, WFCMessage.Message message, ProtoConstants.RequestSourceType requestSourceType) {
        Set<String> notifyReceivers = new LinkedHashSet<>();

        message = m_messagesStore.storeMessage(username, clientID, message);
        WFCMessage.Message.Builder messageBuilder = message.toBuilder();
-        int pullType = m_messagesStore.getNotifyReceivers(username, messageBuilder, notifyReceivers);
+        int pullType = m_messagesStore.getNotifyReceivers(username, messageBuilder, notifyReceivers, requestSourceType);
        mServer.getImBusinessScheduler().execute(() -> this.publisher.publish2Receivers(messageBuilder.build(), notifyReceivers, clientID, pullType));
        return notifyReceivers.size();
    }
@@ -33,7 +33,7 @@ public class LoadRemoteMessagesHandler extends IMHandler<WFCMessage.LoadRemoteMe
        }

        if (request.getConversation().getType() == ProtoConstants.ConversationType.ConversationType_Channel) {
-            if (!m_messagesStore.checkUserInChannel(fromUser, request.getConversation().getTarget())) {
+            if (!m_messagesStore.canSendMessageInChannel(fromUser, request.getConversation().getTarget())) {
                return ErrorCode.ERROR_CODE_NOT_IN_CHANNEL;
            }
        }
@@ -34,7 +34,7 @@ public class RecallMessageHandler extends IMHandler<WFCMessage.INT64Buf> {
            return ErrorCode.ERROR_CODE_NOT_EXIST;
        }

-        publish(fromUser, clientID, message);
+        publish(message.getFromUser(), clientID, message, requestSourceType);

        return errorCode;
    }
@@ -32,6 +32,11 @@ public class RouteHandler extends IMHandler<WFCMessage.RouteRequest> {
        }

        if (session == null || session.getDeleted() > 0) {
+            if(session == null) {
+                LOG.error("Session for <{}, {}> not exist", fromUser, clientID);
+            } else {
+                LOG.error("Session for <{}, {}> deleted", fromUser, clientID);
+            }
            return ErrorCode.ERROR_CODE_SECRECT_KEY_MISMATCH;
        }

@@ -9,19 +9,18 @@
 package io.moquette.imhandler;

 import cn.wildfirechat.pojos.MessagePayload;
+import cn.wildfirechat.pojos.OutputClient;
 import cn.wildfirechat.proto.ProtoConstants;
 import cn.wildfirechat.proto.WFCMessage;
 import com.google.gson.Gson;
 import com.hazelcast.util.StringUtil;
 import io.moquette.BrokerConstants;
+import io.moquette.persistence.MemorySessionStore;
 import io.moquette.spi.impl.Qos1PublishHandler;
 import io.netty.buffer.ByteBuf;
 import cn.wildfirechat.common.ErrorCode;
 import io.netty.buffer.Unpooled;
-import win.liyufan.im.HttpUtils;
-import win.liyufan.im.IMTopic;
-import win.liyufan.im.MessageShardingUtil;
-import win.liyufan.im.Utility;
+import win.liyufan.im.*;

 import java.util.HashSet;
 import java.util.Set;
@@ -32,6 +31,7 @@ import static cn.wildfirechat.common.ErrorCode.ERROR_CODE_SUCCESS;
 public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
    private int mSensitiveType = 0;  //命中敏感词时，0 失败，1 吞掉， 2 敏感词替换成*。
    private String mForwardUrl = null;
+    private String mSensitiveMessageForwardUrl = null;
    private Set<Integer> mForwardMessageTypes = new HashSet<>();
    private String mMentionForwardUrl = null;
    private int mBlacklistStrategy = 0; //黑名单中时，0失败，1吞掉。
@@ -54,7 +54,7 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
                }
            }
        }
-
+        mSensitiveMessageForwardUrl = mServer.getConfig().getProperty(BrokerConstants.MESSAGE_Sensitive_Forward_Url);
        mMentionForwardUrl = mServer.getConfig().getProperty(BrokerConstants.MESSAGE_MentionMsg_Forward_Url);

        try {
@@ -154,7 +154,7 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
                    }
                } else if (message.getConversation().getType() == ProtoConstants.ConversationType.ConversationType_Channel) {
                    if(!m_messagesStore.getGroupMuteExceptionTypes().contains(message.getContent().getType())) {
-                        if (!m_messagesStore.checkUserInChannel(fromUser, message.getConversation().getTarget())) {
+                        if (!m_messagesStore.canSendMessageInChannel(fromUser, message.getConversation().getTarget())) {
                            return ErrorCode.ERROR_CODE_NOT_IN_CHANNEL;
                        }
                    }
@@ -171,12 +171,20 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
            }
            message = message.toBuilder().setFromUser(fromUser).setMessageId(messageId).setServerTimestamp(timestamp).build();

+            OutputClient outputClient = null;
+            if(m_messagesStore.isForwardMessageWithClientInfo() && requestSourceType == ProtoConstants.RequestSourceType.Request_From_User && !StringUtil.isNullOrEmpty(clientID)) {
+                MemorySessionStore.Session session = m_sessionsStore.getSession(clientID);
+                if(session != null && session.getUsername().equals(fromUser)) {
+                    outputClient = new OutputClient(session.getPlatform(), clientID);
+                }
+            }
+
            if (!StringUtil.isNullOrEmpty(mForwardUrl) && (mForwardMessageTypes.isEmpty() || mForwardMessageTypes.contains(message.getContent().getType())) && !(isAdmin && mNoForwardAdminMessage)) {
-                publisher.forwardMessage(message, mForwardUrl);
+                publisher.forwardMessage(message, mForwardUrl, outputClient);
            }

            if(!StringUtil.isNullOrEmpty(mMentionForwardUrl) && message.hasContent() && message.getContent().getMentionedType() != 0 && !(isAdmin && mNoForwardAdminMessage)) {
-                publisher.forwardMessage(message, mMentionForwardUrl);
+                publisher.forwardMessage(message, mMentionForwardUrl, outputClient);
            }

            if (!isAdmin) {
@@ -184,6 +192,9 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
                    Set<String> matched = m_messagesStore.handleSensitiveWord(message.getContent().getSearchableContent());
                    if (matched != null && !matched.isEmpty()) {
                        m_messagesStore.storeSensitiveMessage(message);
+                        if (!StringUtil.isNullOrEmpty(mSensitiveMessageForwardUrl)) {
+                            publisher.forwardMessage(message, mSensitiveMessageForwardUrl, outputClient);
+                        }
                        if (mSensitiveType == 0) {
                            errorCode = ErrorCode.ERROR_CODE_SENSITIVE_MATCHED;
                        } else if (mSensitiveType == 1) {
@@ -203,15 +214,15 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
                            @Override
                            public void onSuccess(String content) {
                                if(StringUtil.isNullOrEmpty(content)) {
-                                    saveAndPublish(fromUser, clientID, finalMsg);
+                                    saveAndPublish(fromUser, clientID, finalMsg, requestSourceType);
                                } else {
-                                    MessagePayload payload = new Gson().fromJson(content, MessagePayload.class);
+                                    MessagePayload payload = GsonUtil.gson.fromJson(content, MessagePayload.class);
                                    if (payload != null && payload.getType() > 0) {
                                        WFCMessage.Message newMsg = finalMsg.toBuilder().setContent(payload.toProtoMessageContent()).build();
-                                        saveAndPublish(fromUser, clientID, newMsg);
+                                        saveAndPublish(fromUser, clientID, newMsg, requestSourceType);
                                    } else {
                                        LOG.error("Response content {} from censor is invalid payload, ignore response and send original message", content);
-                                        saveAndPublish(fromUser, clientID, finalMsg);
+                                        saveAndPublish(fromUser, clientID, finalMsg, requestSourceType);
                                    }
                                }
                                if(mWaitRemoteSensitiveServerResponse) {
@@ -236,7 +247,7 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
                                    }
                                } else {
                                    LOG.warn("Failed to censor message with status {}, errorMessage {}. Send the original message", statusCode, errorMessage);
-                                    saveAndPublish(fromUser, clientID, finalMsg);
+                                    saveAndPublish(fromUser, clientID, finalMsg, requestSourceType);

                                    if(mWaitRemoteSensitiveServerResponse) {
                                        errorCode = ERROR_CODE_SUCCESS;
@@ -268,7 +279,7 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {

            if (errorCode == ErrorCode.ERROR_CODE_SUCCESS) {
                if(!ignoreMsg) {
-                    saveAndPublish(fromUser, clientID, message);
+                    saveAndPublish(fromUser, clientID, message, requestSourceType);
                }
                ackPayload = ackPayload.capacity(20);
                ackPayload.writeLong(messageId);
@@ -72,7 +72,7 @@ public class InterceptConnectMessage extends InterceptAbstractMessage {
    }

    public byte[] getPassword() {
-        return msg.payload().password();
+        return msg.payload().passwordInBytes();
    }

    public String getWillTopic() {
@@ -553,7 +553,7 @@ public class DatabaseStore {
                statement.setInt(index++, message.getContent().getType());
                String to = message.getToUser();
                if (StringUtil.isNullOrEmpty(message.getToUser())) {
-                    if (message.getToList()!= null && message.getToList().size() == 1) {
+                    if (message.getToList().size() > 0) {
                        to = message.getToList().get(0);
                    }
                }
@@ -914,20 +914,24 @@ public class DatabaseStore {
        return false;
    }

-    void persistUserMessage(final String userId, final long messageId, final long messageSeq, final int messageContentType) {
+    void persistUserMessage(final String userId, final long messageId, final long messageSeq, int type, String target, int line, boolean directing, final int messageContentType) {
        mScheduler.execute(()->{
            Connection connection = null;
            PreparedStatement statement = null;
            try {
                connection = DBUtil.getConnection();

-                String sql = "insert into " + getUserMessageTable(userId) + " (`_mid`, `_uid`, `_seq`, `_cont_type`) values(?, ?, ?, ?)";
+                String sql = "insert into " + getUserMessageTable(userId) + " (`_mid`, `_uid`, `_seq`, `_type`, `_target`, `_line`, `_directing`, `_cont_type`) values(?, ?, ?, ?, ?, ?, ?, ?)";

                statement = connection.prepareStatement(sql);
                int index = 1;
                statement.setLong(index++, messageId);
                statement.setString(index++, userId);
                statement.setLong(index++, messageSeq);
+                statement.setInt(index++, type);
+                statement.setString(index++, target);
+                statement.setInt(index++, line);
+                statement.setInt(index++, directing ? 1 :0);
                statement.setInt(index++, messageContentType);
                int count = statement.executeUpdate();
                LOG.info("Update rows {}", count);
@@ -990,7 +994,7 @@ public class DatabaseStore {
            }
            sb.append(")");

-            sb.append(" and _scope = 6 and _key = ?");
+            sb.append(" and _scope in (5,6,26) and _key = ?");

            statement = connection.prepareStatement(sb.toString());
            int index = 1;
@@ -1138,23 +1142,21 @@ public class DatabaseStore {
        try {
            connection = DBUtil.getConnection();

-            StringBuilder sb = new StringBuilder("delete from t_user_setting where _scope in (1,3,5,7) and _uid in (");
+            StringBuilder sb = new StringBuilder("delete from t_user_setting where _scope in (1,3,5,6,7,19) and _uid in (");
            for (int i = 0; i < users.size(); i++) {
                sb.append("?");
                if (i != users.size() - 1) {
                    sb.append(",");
                }
            }
-            sb.append(") and _key like '1-_-");
-            sb.append(groupId);
-            sb.append("'");
-
+            sb.append(") and _key like ?");

            statement = connection.prepareStatement(sb.toString());
            int index = 1;
            for (String userId:users) {
                statement.setString(index++, userId);
            }
+            statement.setString(index++, "1-_-" + groupId);

            int count = statement.executeUpdate();
            LOG.info("Update rows {}", count);
@@ -2970,7 +2972,8 @@ public class DatabaseStore {
                    ", `_secret`" +
                    ", `_callback`" +
                    ", `_automatic`" +
-                    ", `_dt`) values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)" +
+                    ", `_menu`" +
+                    ", `_dt`) values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)" +
                    " ON DUPLICATE KEY UPDATE `_name`=?" +
                    ", `_portrait`=?" +
                    ", `_owner`=?" +
@@ -2980,12 +2983,20 @@ public class DatabaseStore {
                    ", `_secret`=?" +
                    ", `_callback`=?" +
                    ", `_automatic`=?" +
+                    ", `_menu`=?" +
                    ", `_dt`=?";

                statement = connection.prepareStatement(sql);

-                int index = 1;
+                WFCMessage.ChannelMenuList.Builder builder = WFCMessage.ChannelMenuList.newBuilder();
+                if (!channelInfo.getMenuList().isEmpty()) {
+                    for (WFCMessage.ChannelMenu menuBtn:channelInfo.getMenuList()) {
+                        builder.addMenu(menuBtn);
+                    }
+                }
+                byte[] menuBytes = builder.build().toByteArray();

+                int index = 1;
                statement.setString(index++, channelInfo.getTargetId());
                statement.setString(index++, channelInfo.getName());
                statement.setString(index++, channelInfo.getPortrait());
@@ -2996,6 +3007,7 @@ public class DatabaseStore {
                statement.setString(index++, channelInfo.getSecret());
                statement.setString(index++, channelInfo.getCallback());
                statement.setInt(index++, channelInfo.getAutomatic());
+                statement.setBytes(index++, menuBytes);
                statement.setLong(index++, channelInfo.getUpdateDt() == 0 ? System.currentTimeMillis() : channelInfo.getUpdateDt());

                statement.setString(index++, channelInfo.getName());
@@ -3007,6 +3019,7 @@ public class DatabaseStore {
                statement.setString(index++, channelInfo.getSecret());
                statement.setString(index++, channelInfo.getCallback());
                statement.setInt(index++, channelInfo.getAutomatic());
+                statement.setBytes(index++, menuBytes);
                statement.setLong(index++, channelInfo.getUpdateDt() == 0 ? System.currentTimeMillis() : channelInfo.getUpdateDt());

                int count = statement.executeUpdate();
@@ -3059,6 +3072,7 @@ public class DatabaseStore {
                ", `_secret`" +
                ", `_callback`" +
                ", `_automatic`" +
+                ", `_menu`" +
                ", `_dt` from t_channel  where `_cid` = ?";

            statement = connection.prepareStatement(sql);
@@ -3109,6 +3123,21 @@ public class DatabaseStore {
                intValue = rs.getInt(index++);
                builder.setAutomatic(intValue);

+                try {
+                    byte[] bytes = null;
+                    Blob blob = rs.getBlob(index++);
+                    if (blob != null) {
+                        bytes = toByteArray(blob.getBinaryStream());
+                    }
+
+                    WFCMessage.ChannelMenuList menuButtonList = WFCMessage.ChannelMenuList.parseFrom(bytes);
+                    if (menuButtonList.getMenuCount() > 0) {
+                        builder.addAllMenu(menuButtonList.getMenuList());
+                    }
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+
                long longValue = rs.getLong(index++);
                builder.setUpdateDt(longValue);

@@ -3330,6 +3359,57 @@ public class DatabaseStore {
        });
    }

+    List<String> getUserChannels(String userId) {
+        List<String> out = new ArrayList<>();
+
+        Connection connection = null;
+        PreparedStatement statement = null;
+        ResultSet rs = null;
+        try {
+            connection = DBUtil.getConnection();
+            String sql = "select _cid from t_channel_listener where _mid = ?";
+            statement = connection.prepareStatement(sql);
+
+            int index = 1;
+            statement.setString(index++, userId);
+
+            rs = statement.executeQuery();
+            while (rs.next()) {
+                String value = rs.getString(1);
+                if (!StringUtil.isNullOrEmpty(value)) {
+                    out.add(value);
+                }
+            }
+        } catch (SQLException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+            Utility.printExecption(LOG, e, RDBS_Exception);
+        } finally {
+            DBUtil.closeDB(connection, statement, rs);
+        }
+        return out;
+    }
+
+    void clearChannelListener(final String channelId) {
+        LOG.info("Database remove channel {}", channelId);
+        Connection connection = null;
+        PreparedStatement statement = null;
+        try {
+            connection = DBUtil.getConnection();
+            String sql = "delete from t_channel_listener where _cid=?";
+            statement = connection.prepareStatement(sql);
+            statement.setString(1, channelId);
+            int count = statement.executeUpdate();
+            LOG.info("Update rows {}", count);
+        } catch (SQLException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+            Utility.printExecption(LOG, e, RDBS_Exception);
+        } finally {
+            DBUtil.closeDB(connection, statement);
+        }
+    }
+
    public Set<String> getSensitiveWord() {
        Connection connection = null;
        PreparedStatement statement = null;
@@ -23,6 +23,7 @@ import com.google.gson.Gson;
 import com.google.protobuf.ByteString;
 import com.hazelcast.core.*;
 import com.hazelcast.util.StringUtil;
+import com.xiaoleilu.loServer.action.admin.AdminAction;
 import com.xiaoleilu.loServer.model.FriendData;
 import cn.wildfirechat.common.ErrorCode;
 import io.moquette.BrokerConstants;
@@ -31,14 +32,18 @@ import io.moquette.server.Constants;
 import io.moquette.server.Server;
 import io.moquette.spi.IMatchingCondition;
 import io.moquette.spi.IMessagesStore;
+import io.moquette.spi.impl.security.AES;
 import io.moquette.spi.security.Tokenor;
 import io.moquette.spi.impl.subscriptions.Topic;
 import io.netty.handler.codec.mqtt.MqttVersion;
+import org.apache.commons.codec.digest.DigestUtils;
 import org.json.simple.JSONObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import win.liyufan.im.*;

+import java.net.MalformedURLException;
+import java.net.URL;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
@@ -48,7 +53,7 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.function.Consumer;

 import static cn.wildfirechat.common.IMExceptionEvent.EventType.EVENT_CALLBACK_Exception;
-import static cn.wildfirechat.proto.ProtoConstants.ChannelState.Channel_State_Mask_Deleted;
+import static cn.wildfirechat.proto.ProtoConstants.ChannelState.*;
 import static cn.wildfirechat.proto.ProtoConstants.ChannelUpdateEventType.*;
 import static cn.wildfirechat.proto.ProtoConstants.ChatroomMemberUpdateEventType.Chatroom_Member_Event_Join;
 import static cn.wildfirechat.proto.ProtoConstants.ChatroomMemberUpdateEventType.Chatroom_Member_Event_Leave;
@@ -91,6 +96,7 @@ public class MemoryMessagesStore implements IMessagesStore {
    private static final String CHANNEL_LISTENERS = "channel_listeners";

    private static boolean IS_MESSAGE_ROAMING = true;
+    private static long msgCompensateTimeLimit = 300000;

    private static boolean IS_MESSAGE_REMOTE_HISTORY_MESSAGE = true;
    private static boolean IS_CHATROOM_MESSAGE_REMOTE_HISTORY_MESSAGE = true;
@@ -160,6 +166,11 @@ public class MemoryMessagesStore implements IMessagesStore {
    private boolean mGroupAllowRobotCustomOperationNotification;
    private int mGroupVisibleQuitKickoffNotification;
    private int mSyncDataPartSize = 0;
+    private boolean keepDisplayNameWhenDestroyUser = true;
+
+    private boolean mForwardMessageWithClientInfo = false;
+    private boolean mRobotCallbackWithClientInfo = false;
+    private boolean mChannelCallbackWithClientInfo = false;

    private Set<Integer> mUserHideProperties = new HashSet<>();

@@ -168,6 +179,11 @@ public class MemoryMessagesStore implements IMessagesStore {
        this.databaseStore = databaseStore;

        IS_MESSAGE_ROAMING = "1".equals(m_Server.getConfig().getProperty(MESSAGE_ROAMING));
+        try {
+            msgCompensateTimeLimit = Long.parseLong(m_Server.getConfig().getProperty(MESSAGE_Compensate_Time_Limit, "300000"));
+        } catch (NumberFormatException e) {
+
+        }
        IS_MESSAGE_REMOTE_HISTORY_MESSAGE = "1".equals(m_Server.getConfig().getProperty(MESSAGE_Remote_History_Message));
        IS_CHATROOM_MESSAGE_REMOTE_HISTORY_MESSAGE = "1".equals(m_Server.getConfig().getProperty(MESSAGE_Remote_Chatroom_History_Message, "1"));
        Constants.MAX_MESSAGE_QUEUE = Integer.parseInt(m_Server.getConfig().getProperty(MESSAGE_Max_Queue));
@@ -418,6 +434,11 @@ public class MemoryMessagesStore implements IMessagesStore {
            mSyncDataPartSize = Integer.parseInt(server.getConfig().getProperty(SYNC_Data_Part_Size, "0"));
        } catch (Exception e) {

+        }
+        try {
+            keepDisplayNameWhenDestroyUser = Boolean.parseBoolean(server.getConfig().getProperty(USER_KEEP_DISPLAY_NAME_WHEN_DESTROY, "true"));
+        } catch (Exception e) {
+
        }


@@ -436,6 +457,21 @@ public class MemoryMessagesStore implements IMessagesStore {
            e.printStackTrace();
        }

+        try {
+            mForwardMessageWithClientInfo = Boolean.parseBoolean(server.getConfig().getProperty(BrokerConstants.MESSAGE_Forward_With_Client_Info, "false"));
+        } catch (Exception e) {
+
+        }
+        try {
+            mRobotCallbackWithClientInfo = Boolean.parseBoolean(server.getConfig().getProperty(BrokerConstants.ROBOT_Callback_With_Client_Info, "false"));
+        } catch (Exception e) {
+
+        }
+        try {
+            mChannelCallbackWithClientInfo = Boolean.parseBoolean(server.getConfig().getProperty(BrokerConstants.CHANNEL_Callback_With_Client_Info, "false"));
+        } catch (Exception e) {
+
+        }

    }

@@ -496,7 +532,7 @@ public class MemoryMessagesStore implements IMessagesStore {


    @Override
-    public int getNotifyReceivers(String fromUser, WFCMessage.Message.Builder messageBuilder, Set<String> notifyReceivers) {
+    public int getNotifyReceivers(String fromUser, WFCMessage.Message.Builder messageBuilder, Set<String> notifyReceivers, ProtoConstants.RequestSourceType requestSourceType) {
        WFCMessage.Message message = messageBuilder.build();
        HazelcastInstance hzInstance = m_Server.getHazelcastInstance();
        int type = message.getConversation().getType();
@@ -556,8 +592,14 @@ public class MemoryMessagesStore implements IMessagesStore {
        } else if(type == ProtoConstants.ConversationType.ConversationType_Channel) {
            WFCMessage.ChannelInfo channelInfo = getChannelInfo(message.getConversation().getTarget());
            if (channelInfo != null) {
-                notifyReceivers.add(fromUser);
                if (channelInfo.getOwner().equals(fromUser)) {
+                    if(requestSourceType == ProtoConstants.RequestSourceType.Request_From_Channel
+                        && channelInfo.getAutomatic() != 0) {
+                        LOG.info("Channel api message not send to the owner when automatic");
+                    } else {
+                        notifyReceivers.add(fromUser);
+                    }
+
                    if((channelInfo.getStatus() & ProtoConstants.ChannelState.Channel_State_Mask_Global) > 0) {
                        if((message.getToList() != null && !message.getToList().isEmpty())) {
                            notifyReceivers.addAll(message.getToList());
@@ -581,8 +623,11 @@ public class MemoryMessagesStore implements IMessagesStore {
                        }
                    }
                } else {
-                    if (StringUtil.isNullOrEmpty(channelInfo.getCallback()) || channelInfo.getAutomatic() == 0) {
+                    notifyReceivers.add(fromUser);
+                    if (channelInfo.getAutomatic() == 0) {
                        notifyReceivers.add(channelInfo.getOwner());
+                    } else {
+                        LOG.info("Channel api message not send to the owner when automatic");
                    }
                }
            } else {
@@ -700,7 +745,7 @@ public class MemoryMessagesStore implements IMessagesStore {
                            }
                        }

-                        if (noRoaming && (System.currentTimeMillis() - bundle.getMessage().getServerTimestamp() > 5 * 60 * 1000)) {
+                        if (noRoaming && (System.currentTimeMillis() - bundle.getMessage().getServerTimestamp() > msgCompensateTimeLimit)) {
                            continue;
                        }

@@ -772,6 +817,15 @@ public class MemoryMessagesStore implements IMessagesStore {
        return builder.build();
    }

+    public void clearChatroomMembers(String chatroomId) {
+        MultiMap<String, UserClientEntry> chatroomMembers = m_Server.getHazelcastInstance().getMultiMap(CHATROOM_MEMBER_IDS);
+        IMap<String, String> userChatroomMap = m_Server.getHazelcastInstance().getMap(USER_CHATROOM);
+        chatroomMembers.get(chatroomId).forEach(userClientEntry -> {
+            userChatroomMap.remove(userClientEntry.userId);
+        });
+        chatroomMembers.remove(chatroomId);
+    }
+
    @Override
    public Collection<UserClientEntry> getChatroomMembers(String chatroomId) {
        MultiMap<String, UserClientEntry> chatroomMembers = m_Server.getHazelcastInstance().getMultiMap(CHATROOM_MEMBER_IDS);
@@ -849,7 +903,7 @@ public class MemoryMessagesStore implements IMessagesStore {
    }

    @Override
-    public long insertUserMessages(String sender, int conversationType, String target, int line, int messageContentType, String user, long messageId) {
+    public long insertUserMessages(String sender, int conversationType, String target, int line, int messageContentType, String user, long messageId, boolean directing) {
        // messageId是全局的，messageSeq是跟个人相关的，理论上messageId的增长数度远远大于seq。
        // 考虑到一种情况，当服务器发生变化，用户发生迁移后，messageSeq还需要保持有序。 要么把Seq持久化，要么在迁移后Seq取一个肯定比以前更大的数字（这个数字就是messageId）
        // 这里选择使用后面一种情况
@@ -889,7 +943,7 @@ public class MemoryMessagesStore implements IMessagesStore {
            mWriteLock.unlock();
        }

-        databaseStore.persistUserMessage(user, messageId, messageSeq, messageContentType);
+        databaseStore.persistUserMessage(user, messageId, messageSeq, conversationType, target, line, directing, messageContentType);
        return messageSeq;
    }

@@ -1089,7 +1143,7 @@ public class MemoryMessagesStore implements IMessagesStore {
            event.type = type;
            m_Server.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mGroupInfoUpdateCallback, new Gson().toJson(event), HttpUtils.HttpPostType.POST_TYPE_Grout_Event_Callback);
+                    HttpUtils.httpJsonPost(mGroupInfoUpdateCallback, GsonUtil.gson.toJson(event), HttpUtils.HttpPostType.POST_TYPE_Grout_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -1108,7 +1162,7 @@ public class MemoryMessagesStore implements IMessagesStore {
            event.value = value;
            m_Server.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mGroupMemberUpdateCallback, new Gson().toJson(event), HttpUtils.HttpPostType.POST_TYPE_Grout_Member_Event_Callback);
+                    HttpUtils.httpJsonPost(mGroupMemberUpdateCallback, GsonUtil.gson.toJson(event), HttpUtils.HttpPostType.POST_TYPE_Grout_Member_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -1126,7 +1180,7 @@ public class MemoryMessagesStore implements IMessagesStore {
            event.value = value;
            m_Server.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mRelationUpdateCallback, new Gson().toJson(event), HttpUtils.HttpPostType.POST_TYPE_User_Relation_Event_Callback);
+                    HttpUtils.httpJsonPost(mRelationUpdateCallback, GsonUtil.gson.toJson(event), HttpUtils.HttpPostType.POST_TYPE_User_Relation_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -1139,7 +1193,7 @@ public class MemoryMessagesStore implements IMessagesStore {
        if (!StringUtil.isNullOrEmpty(mUserInfoUpdateCallback)) {
            m_Server.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mUserInfoUpdateCallback, new Gson().toJson(InputOutputUserInfo.fromPbUser(user)), HttpUtils.HttpPostType.POST_TYPE_User_Info_Event_Callback);
+                    HttpUtils.httpJsonPost(mUserInfoUpdateCallback, GsonUtil.gson.toJson(InputOutputUserInfo.fromPbUser(user)), HttpUtils.HttpPostType.POST_TYPE_User_Info_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -1156,7 +1210,7 @@ public class MemoryMessagesStore implements IMessagesStore {
            event.type = type;
            m_Server.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mChannelInfoUpdateCallback, new Gson().toJson(event), HttpUtils.HttpPostType.POST_TYPE_Channel_Info_Event_Callback);
+                    HttpUtils.httpJsonPost(mChannelInfoUpdateCallback, GsonUtil.gson.toJson(event), HttpUtils.HttpPostType.POST_TYPE_Channel_Info_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -1172,7 +1226,7 @@ public class MemoryMessagesStore implements IMessagesStore {
            event.type = type;
            m_Server.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mChatroomInfoUpdateCallback, new Gson().toJson(event), HttpUtils.HttpPostType.POST_TYPE_Chatroom_Info_Event_Callback);
+                    HttpUtils.httpJsonPost(mChatroomInfoUpdateCallback, GsonUtil.gson.toJson(event), HttpUtils.HttpPostType.POST_TYPE_Chatroom_Info_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -1190,7 +1244,7 @@ public class MemoryMessagesStore implements IMessagesStore {
            event.type = type;
            m_Server.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mChatroomMemberUpdateCallback, new Gson().toJson(event), HttpUtils.HttpPostType.POST_TYPE_Chatroom_Member_Event_Callback);
+                    HttpUtils.httpJsonPost(mChatroomMemberUpdateCallback, GsonUtil.gson.toJson(event), HttpUtils.HttpPostType.POST_TYPE_Chatroom_Member_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -1252,11 +1306,31 @@ public class MemoryMessagesStore implements IMessagesStore {
            }
        }

+        MultiMap<String, WFCMessage.GroupMember> groupMembers = hzInstance.getMultiMap(GROUP_MEMBERS);
+        Collection<WFCMessage.GroupMember> members = groupMembers.get(groupId);
+        if (members == null || members.size() == 0) {
+            members = loadGroupMemberFromDB(hzInstance, groupId);
+        }
+
+        ArrayList<String> existMemberIds = new ArrayList<>();
+        for (WFCMessage.GroupMember member : members) {
+            if (member.getType() != GroupMemberType_Removed) {
+                existMemberIds.add(member.getMemberId());
+            }
+        }
+
        long updateDt = System.currentTimeMillis();

        List<WFCMessage.GroupMember> tmp = new ArrayList<>();
-        ArrayList<String> newInviteUsers = new ArrayList<>();
+        int newMemberCount = 0;
        for (WFCMessage.GroupMember member : memberList) {
+            if (existMemberIds.contains(member.getMemberId()) && member.getType() != GroupMemberType_Removed) {
+                if(!isAdmin)
+                    continue;
+            } else {
+                newMemberCount++;
+            }
+
            WFCMessage.GroupMember.Builder builder = member.toBuilder();
            builder.setUpdateDt(updateDt).setCreateDt(updateDt);
            if (member.getMemberId().equals(groupInfo.getOwner())) {
@@ -1276,29 +1350,23 @@ public class MemoryMessagesStore implements IMessagesStore {
            }
            member = builder.build();
            tmp.add(member);
-            newInviteUsers.add(member.getMemberId());
            updateDt++;
        }
        memberList = tmp;

-        MultiMap<String, WFCMessage.GroupMember> groupMembers = hzInstance.getMultiMap(GROUP_MEMBERS);
-        Collection<WFCMessage.GroupMember> members = groupMembers.get(groupId);
-        if (members == null || members.size() == 0) {
-            members = loadGroupMemberFromDB(hzInstance, groupId);
-        }
-
-        if (maxCount != Integer.MAX_VALUE) {
-            int existCount = 0;
-            for (WFCMessage.GroupMember member : members) {
-                if (member.getType() != GroupMemberType_Removed) {
-                    existCount++;
-                }
+        if (memberList.size() == 0) {
+            if (!isAdmin) {
+                return ErrorCode.ERROR_CODE_ALREADY_IN_GROUP;
+            } else {
+                return ErrorCode.ERROR_CODE_SUCCESS;
            }
-            if (existCount + newInviteUsers.size() > maxCount) {
+        } else {
+            if (existMemberIds.size() + newMemberCount > maxCount) {
                return ErrorCode.ERROR_CODE_GROUP_EXCEED_MAX_MEMBER_COUNT;
            }
        }

+
        databaseStore.persistGroupMember(groupId, memberList, true);
        databaseStore.updateGroupMemberCountDt(groupId);

@@ -2060,6 +2128,10 @@ public class MemoryMessagesStore implements IMessagesStore {
            if (!canRecall) {
                return ErrorCode.ERROR_CODE_NOT_RIGHT;
            }
+            
+            if(message.getContent().getType() == 80) {
+                return ErrorCode.ERROR_CODE_SUCCESS;
+            }

            JSONObject json = new JSONObject();
            json.put("s", message.getFromUser());
@@ -2296,6 +2368,24 @@ public class MemoryMessagesStore implements IMessagesStore {

    }

+    public void forceCleanOnlineStatus(String userId, String clientId) {
+        if (m_Server.isShutdowning()) {
+            return;
+        }
+
+        if(!mMultiPlatformNotification || m_Server.getStore().sessionsStore().isMultiEndpointSupported()) {
+            WFCMessage.UserSettingEntry pcentry = getUserSetting(userId, kUserSettingPCOnline, "PC");
+            if (pcentry != null && !StringUtil.isNullOrEmpty(pcentry.getValue()) && pcentry.getValue().contains(clientId)) {
+                updateUserSettings(userId, WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingPCOnline).setKey("PC").setValue("").build(), clientId);
+            }
+
+            WFCMessage.UserSettingEntry padentry = getUserSetting(userId, kUserSettingPCOnline, "Pad");
+            if (padentry != null && !StringUtil.isNullOrEmpty(padentry.getValue()) && padentry.getValue().contains(clientId)) {
+                updateUserSettings(userId, WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingPCOnline).setKey("Pad").setValue("").build(), clientId);
+            }
+        }
+    }
+
    @Override
    public void updateUserOnlineSetting(MemorySessionStore.Session session, boolean online) {
        if(!mMultiPlatformNotification) {
@@ -2309,39 +2399,31 @@ public class MemoryMessagesStore implements IMessagesStore {
            return;
        }

-        if (session.getPlatform() == Platform_LINUX || session.getPlatform() == Platform_Windows || session.getPlatform() == Platform_OSX) {
-            updateUserSettings(session.username, WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingPCOnline).setKey("PC").setValue(online ? (System.currentTimeMillis()  + "|"  + session.getPlatform() + "|" + session.getClientID() + "|" + session.getPhoneName()) : "").build(), session.clientID);
-        } else {
-            String value = null;
-            for (MemorySessionStore.Session s : m_Server.getStore().sessionsStore().sessionForUser(session.username)) {
-                if (s.getDeleted() != 0 || !m_Server.getConnectionsManager().isConnected(s.getClientID())) {
-                    continue;
-                }
-
-                switch (s.getPlatform()) {
-                    case Platform_LINUX:
-                    case Platform_Windows:
-                    case Platform_OSX:
-                        value = System.currentTimeMillis() + "|" + s.getPlatform() + "|" + s.getClientID() + "|" + s.getPhoneName();
-                        break;
-                    default:
-                        break;
-                }
-
-                if (value != null) {
-                    break;
-                }
+        String pcValue = null;
+        for (MemorySessionStore.Session s : m_Server.getStore().sessionsStore().sessionForUser(session.username)) {
+            if (s.getDeleted() != 0 || !m_Server.getConnectionsManager().isConnected(s.getClientID())) {
+                continue;
            }

-            WFCMessage.UserSettingEntry pcentry = getUserSetting(session.getUsername(), kUserSettingPCOnline, "PC");
-            if (value != null) {
-                if (pcentry == null || StringUtil.isNullOrEmpty(pcentry.getValue())) {
-                    updateUserSettings(session.username, WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingPCOnline).setKey("PC").setValue(value).build(), session.clientID);
-                }
-            } else {
-                if (pcentry != null && !StringUtil.isNullOrEmpty(pcentry.getValue())) {
-                    updateUserSettings(session.username, WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingPCOnline).setKey("PC").setValue("").build(), session.clientID);
-                }
+            switch (s.getPlatform()) {
+                case Platform_LINUX:
+                case Platform_Windows:
+                case Platform_OSX:
+                    pcValue = System.currentTimeMillis() + "|" + s.getPlatform() + "|" + s.getClientID() + "|" + s.getPhoneName();
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        WFCMessage.UserSettingEntry pcentry = getUserSetting(session.getUsername(), kUserSettingPCOnline, "PC");
+        if (pcValue != null) {
+            if (pcentry == null || StringUtil.isNullOrEmpty(pcentry.getValue())) {
+                updateUserSettings(session.username, WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingPCOnline).setKey("PC").setValue(pcValue).build(), session.clientID);
+            }
+        } else {
+            if (pcentry != null && !StringUtil.isNullOrEmpty(pcentry.getValue())) {
+                updateUserSettings(session.username, WFCMessage.ModifyUserSettingReq.newBuilder().setScope(kUserSettingPCOnline).setKey("PC").setValue("").build(), session.clientID);
            }
        }
    }
@@ -2456,12 +2538,42 @@ public class MemoryMessagesStore implements IMessagesStore {
    }

    @Override
-    public void destoryUser(String userId) {
+    public void destroyUser(String userId) {
        HazelcastInstance hzInstance = m_Server.getHazelcastInstance();
        IMap<String, WFCMessage.User> mUserMap = hzInstance.getMap(USERS);
        WFCMessage.User us = mUserMap.get(userId);
        if (us != null) {
-            us = WFCMessage.User.newBuilder().setUid(userId).setUpdateDt(System.currentTimeMillis()).setDisplayName("").setName(userId).setDeleted(1).build();
+            if (keepDisplayNameWhenDestroyUser) {
+                us = WFCMessage.User.newBuilder()
+                    .setUid(userId)
+                    .setUpdateDt(System.currentTimeMillis())
+                    .setName(userId)
+                    .setDeleted(1)
+                    .clearAddress()
+                    .clearCompany()
+                    .clearEmail()
+                    .clearExtra()
+                    .clearMobile()
+                    .clearPortrait()
+                    .clearSocial()
+                    .build();
+            } else {
+                us = WFCMessage.User.newBuilder()
+                    .setUid(userId)
+                    .setUpdateDt(System.currentTimeMillis())
+                    .setName(userId)
+                    .setDeleted(1)
+                    .clearDisplayName()
+                    .clearAddress()
+                    .clearCompany()
+                    .clearEmail()
+                    .clearExtra()
+                    .clearMobile()
+                    .clearPortrait()
+                    .clearSocial()
+                    .build();
+            }
+
            try {
                databaseStore.updateUser(us);
            } catch (Exception e) {
@@ -2565,6 +2677,7 @@ public class MemoryMessagesStore implements IMessagesStore {
        IMap<String, WFCMessage.ChatroomInfo> chatroomInfoMap = hzInstance.getMap(CHATROOMS);
        WFCMessage.ChatroomInfo room = chatroomInfoMap.get(chatroomId);
        if (room != null) {
+            clearChatroomMembers(chatroomId);
            room = room.toBuilder().setUpdateDt(System.currentTimeMillis()).setState(ProtoConstants.ChatroomState.Chatroom_State_End).build();
            chatroomInfoMap.put(chatroomId, room);
            callbackChatroomInfoUpdateEvent(chatroomId, Chatroom_Event_Destroy);
@@ -2991,6 +3104,8 @@ public class MemoryMessagesStore implements IMessagesStore {
                return ErrorCode.ERROR_CODE_FRIEND_REQUEST_EXPIRED;
            } else {
                existRequest = existRequest.toBuilder().setStatus(request.getStatus()).setUpdateDt(System.currentTimeMillis()).build();
+                heads[2] = existRequest.getUpdateDt();
+                heads[3] = existRequest.getUpdateDt();
                databaseStore.persistOrUpdateFriendRequest(existRequest);

                if (request.getStatus() == ProtoConstants.FriendRequestStatus.RequestStatus_Accepted) {
@@ -3184,7 +3299,7 @@ public class MemoryMessagesStore implements IMessagesStore {
    @Override
    public ErrorCode handleJoinChatroom(String userId, String clientId, String chatroomId) {
        IMap<String, WFCMessage.ChatroomInfo> chatroomInfoMap = m_Server.getHazelcastInstance().getMap(CHATROOMS);
-        if (chatroomInfoMap == null || chatroomInfoMap.get(chatroomId) == null) {
+        if (chatroomInfoMap == null || chatroomInfoMap.get(chatroomId) == null || chatroomInfoMap.get(chatroomId).getState() == ProtoConstants.ChatroomState.Chatroom_State_End) {
            if(mChatroomCreateWhenNotExist) {
                WFCMessage.ChatroomInfo.Builder builder = WFCMessage.ChatroomInfo.newBuilder().setTitle(chatroomId);
                createChatroom(chatroomId, builder.build());
@@ -3231,6 +3346,156 @@ public class MemoryMessagesStore implements IMessagesStore {
        return true;
    }

+    private String ensureSecretLength(String secret) {
+        while ( secret.length() < 16) {
+            secret += "w";
+            secret += secret;
+        }
+        return secret;
+    }
+
+
+    @Override
+    public String getApplicationAuthCode(String fromUser, String applicationId, int type, String host) {
+        String secret = null;
+        if(type == ProtoConstants.ApplicationType.ApplicationType_Robot) {
+            WFCMessage.Robot robotData = getRobot(applicationId);
+            if(robotData != null && !StringUtil.isNullOrEmpty(robotData.getCallback()) && !StringUtil.isNullOrEmpty(robotData.getSecret())) {
+                try {
+                    URL url = new URL(robotData.getCallback());
+                    if(url.getHost().equals(host)) {
+                        secret = robotData.getSecret();
+                    } else {
+                        LOG.warn("get application auth code error, request host is not the same host with callback host");
+                    }
+                } catch (MalformedURLException e) {
+                    e.printStackTrace();
+                }
+            } else {
+                String errorReason;
+                if(robotData == null) {
+                    errorReason = "Robot not exist.";
+                } else if(StringUtil.isNullOrEmpty(robotData.getCallback())) {
+                    errorReason = "Robot no callback address";
+                } else {
+                    errorReason = "Robot no secret";
+                }
+                LOG.warn("get application auth code error, reason {}", errorReason);
+            }
+        } else if(type == ProtoConstants.ApplicationType.ApplicationType_Channel) {
+            WFCMessage.ChannelInfo channelData = getChannelInfo(applicationId);
+            if(channelData != null && !StringUtil.isNullOrEmpty(channelData.getCallback()) && !StringUtil.isNullOrEmpty(channelData.getSecret())) {
+                try {
+                    URL url = new URL(channelData.getCallback());
+                    if(url.getHost().equals(host)) {
+                        secret = channelData.getSecret();
+                    } else {
+                        LOG.warn("get application auth code error, request host is not the same host with callback host");
+                    }
+                } catch (MalformedURLException e) {
+                    e.printStackTrace();
+                }
+            } else {
+                String errorReason;
+                if(channelData == null) {
+                    errorReason = "Channel not exist.";
+                } else if(StringUtil.isNullOrEmpty(channelData.getCallback())) {
+                    errorReason = "Channel no callback address";
+                } else {
+                    errorReason = "Channel no secret";
+                }
+                LOG.warn("get application auth code error, reason {}", errorReason);
+            }
+        } else if(type == ProtoConstants.ApplicationType.ApplicationType_Admin) {
+            secret = AdminAction.getSecretKey();
+            applicationId = "wfadmin";
+        }
+
+        if(!StringUtil.isNullOrEmpty(secret)) {
+            secret = ensureSecretLength(secret);
+            byte[] token = AES.AESEncrypt(fromUser + "?|?" + System.currentTimeMillis() + "?|?" + applicationId + "?|?" + type, secret);
+            return new String(Base64.getEncoder().encode(token));
+        }
+
+        return null;
+    }
+
+    @Override
+    public String verifyApplicationAuthCode(String authCode, String applicationId, int type) {
+        String secret = null;
+        if(type == ProtoConstants.ApplicationType.ApplicationType_Robot) {
+            WFCMessage.Robot robotData = getRobot(applicationId);
+            if(robotData != null && !StringUtil.isNullOrEmpty(robotData.getCallback()) && !StringUtil.isNullOrEmpty(robotData.getSecret())) {
+                secret = robotData.getSecret();
+            }
+        } else if(type == ProtoConstants.ApplicationType.ApplicationType_Channel) {
+            WFCMessage.ChannelInfo channelData = getChannelInfo(applicationId);
+            if(channelData != null && !StringUtil.isNullOrEmpty(channelData.getCallback()) && !StringUtil.isNullOrEmpty(channelData.getSecret())) {
+                secret = channelData.getSecret();
+            }
+        } else if(type == ProtoConstants.ApplicationType.ApplicationType_Admin) {
+            secret = AdminAction.getSecretKey();
+            applicationId = "wfadmin";
+        }
+
+        secret = ensureSecretLength(secret);
+
+        byte[] data = Base64.getDecoder().decode(authCode);
+        data = AES.AESDecrypt(data, secret, true);
+
+        if (data == null || data.length == 0) {
+            return null;
+        } else {
+            String str = new String(data);
+            String[] strArr = str.split("\\?\\|\\?");
+            if (strArr.length == 4) {
+                if (applicationId.equals(strArr[2])) {
+                    long timestamp= Long.parseLong(strArr[1]);
+                    if(System.currentTimeMillis() - timestamp > 60*1000) {
+                        return null;
+                    }
+                    return strArr[0];
+                }
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public ErrorCode configApplication(String appId, int appType, long timestamp, String nonce, String signature) {
+        String secret;
+        if(System.currentTimeMillis()/1000 - timestamp > 300) {
+            return ErrorCode.ERROR_CODE_SIGN_EXPIRED;
+        }
+
+        if(appType == ProtoConstants.ApplicationType.ApplicationType_Robot) {
+            WFCMessage.Robot robotData = getRobot(appId);
+            if(robotData != null) {
+                secret = robotData.getSecret();
+            } else {
+                return ErrorCode.ERROR_CODE_NOT_EXIST;
+            }
+        } else if(appType == ProtoConstants.ApplicationType.ApplicationType_Channel) {
+            WFCMessage.ChannelInfo channelData = getChannelInfo(appId);
+            if(channelData != null) {
+                secret = channelData.getSecret();
+            } else {
+                return ErrorCode.ERROR_CODE_NOT_EXIST;
+            }
+        } else {
+            LOG.error("Config application type only support 0 or 1");
+            return ErrorCode.INVALID_PARAMETER;
+        }
+
+        String str = nonce + "|" + appId + "|" + timestamp + "|" + secret;
+        String sign = DigestUtils.sha1Hex(str);
+        if(sign.equals(signature)) {
+            return ErrorCode.ERROR_CODE_SUCCESS;
+        }
+
+        return ErrorCode.ERROR_CODE_AUTH_FAILURE;
+    }
+
    @Override
    public boolean isNewFriendWelcomeMessage() {
        return mFriendNewWelcomeMessage;
@@ -3581,7 +3846,7 @@ public class MemoryMessagesStore implements IMessagesStore {

    @Override
    public void clearUserChannels(String userId) {
-
+        databaseStore.getUserChannels(userId).forEach(s -> listenChannel(userId, s, false));
    }


@@ -3623,9 +3888,15 @@ public class MemoryMessagesStore implements IMessagesStore {
                e.printStackTrace();
                Utility.printExecption(LOG, e);
            }
+        } else if(modifyType == Modify_Channel_Menu) {
+            OutputGetChannelInfo.OutputMenuList outputMenuButtons = GsonUtil.gson.fromJson(value, OutputGetChannelInfo.OutputMenuList.class);
+            if (!outputMenuButtons.isEmpty()) {
+                for (OutputGetChannelInfo.OutputMenu outputMenuButton : outputMenuButtons) {
+                    newInfoBuilder.addMenu(outputMenuButton.toPbInfo());
+                }
+            }
        }

-
        newInfoBuilder.setUpdateDt(System.currentTimeMillis());
        mIMap.put(channelId, newInfoBuilder.build());
        callbackChannelInfoUpdateEvent(operator, channelId, Channel_Event_Update);
@@ -3661,7 +3932,7 @@ public class MemoryMessagesStore implements IMessagesStore {
    }

    @Override
-    public ErrorCode distoryChannel(String operator, String channelId, boolean isAdmin) {
+    public ErrorCode destroyChannel(String operator, String channelId, boolean isAdmin) {
        HazelcastInstance hzInstance = m_Server.getHazelcastInstance();
        IMap<String, WFCMessage.ChannelInfo> mIMap = hzInstance.getMap(CHANNELS);

@@ -3681,6 +3952,8 @@ public class MemoryMessagesStore implements IMessagesStore {
        newInfoBuilder.setStatus(oldInfo.getStatus() | Channel_State_Mask_Deleted);
        newInfoBuilder.setUpdateDt(System.currentTimeMillis());
        mIMap.put(channelId, newInfoBuilder.build());
+        databaseStore.clearChannelListener(channelId);
+        hzInstance.getMultiMap(CHANNEL_LISTENERS).remove(channelId);

        callbackChannelInfoUpdateEvent(operator, channelId, Channel_Event_Destroy);
        return ErrorCode.ERROR_CODE_SUCCESS;
@@ -3698,18 +3971,18 @@ public class MemoryMessagesStore implements IMessagesStore {
        IMap<String, WFCMessage.ChannelInfo> mIMap = hzInstance.getMap(CHANNELS);
        WFCMessage.ChannelInfo channelInfo = mIMap.get(channelId);
        if(channelInfo != null && (channelInfo.getStatus() & ProtoConstants.ChannelState.Channel_State_Mask_Private) > 0) {
-            return ErrorCode.ERROR_CODE_NOT_RIGHT;
+            return ErrorCode.ERROR_CODE_NOT_EXIST;
        }

-        getChannelListener(channelId);
-
-        if (listen) {
-            listeners.put(channelId, operator);
-        } else {
-            listeners.remove(channelId, operator);
+        try {
+            mWriteLock.lock();
+            databaseStore.updateChannelListener(channelId, operator, listen);
+            listeners.remove(channelId);
+        } finally {
+            mWriteLock.unlock();
        }
-        databaseStore.updateChannelListener(channelId, operator, listen);
-
+        
+        IMHandler.getPublisher().notifyChannelListenStatusChanged(channelInfo, operator, listen);
        return ErrorCode.ERROR_CODE_SUCCESS;
    }

@@ -3718,9 +3991,14 @@ public class MemoryMessagesStore implements IMessagesStore {
        MultiMap<String, String> listeners = hzInstance.getMultiMap(CHANNEL_LISTENERS);
        Collection<String> result = listeners.get(channelId);
        if (result.isEmpty()) {
-            result = databaseStore.getChannelListener(channelId);
-            for (String userId : result) {
-                listeners.put(channelId, userId);
+            try {
+                mWriteLock.lock();
+                result = databaseStore.getChannelListener(channelId);
+                for (String userId : result) {
+                    listeners.put(channelId, userId);
+                }
+            } finally {
+                mWriteLock.unlock();
            }
        }
        return result;
@@ -3733,6 +4011,29 @@ public class MemoryMessagesStore implements IMessagesStore {
        return mIMap.get(channelId);
    }

+    @Override
+    public boolean canSendMessageInChannel(String user, String channelId) {
+        IMap<String, WFCMessage.ChannelInfo> mIMap = m_Server.getHazelcastInstance().getMap(CHANNELS);
+        WFCMessage.ChannelInfo info = mIMap.get(channelId);
+        if(info == null || info.getStatus() == Channel_State_Mask_Deleted) {
+            return false;
+        }
+        if(user.equals(info.getOwner())) {
+            return true;
+        }
+
+        if((info.getStatus() & Channel_State_Mask_Global) > 0 || (info.getStatus() & Channel_State_Mask_Message_Unsubscribed) > 0) {
+            return true;
+        }
+
+        Collection<String> channelMembers = getChannelListener(channelId);
+        if (channelMembers == null || !channelMembers.contains(user)) {
+            return false;
+        }
+
+        return true;
+    }
+
    @Override
    public boolean checkUserInChannel(String user, String channelId) {
        Collection<String> channelMembers = getChannelListener(channelId);
@@ -3752,12 +4053,7 @@ public class MemoryMessagesStore implements IMessagesStore {

    @Override
    public Collection<String> getChannelSubscriber(String channelId) {
-        MultiMap<String, String> channelMembers = m_Server.getHazelcastInstance().getMultiMap(CHANNEL_LISTENERS);
-        if (channelMembers == null) {
-            return new ArrayList<>();
-        }
-
-        return channelMembers.get(channelId);
+        return getChannelListener(channelId);
    }

    @Override
@@ -3817,6 +4113,20 @@ public class MemoryMessagesStore implements IMessagesStore {
        return mGroupVisibleQuitKickoffNotification;
    }

+    @Override
+    public boolean isForwardMessageWithClientInfo() {
+        return mForwardMessageWithClientInfo;
+    }
+
+    @Override
+    public boolean isRobotCallbackWithClientInfo() {
+        return mRobotCallbackWithClientInfo;
+    }
+
+    @Override
+    public boolean isChannelCallbackWithClientInfo() {
+        return mChannelCallbackWithClientInfo;
+    }

    @Override
    public List<Integer> getClientForbiddenSendTypes() {
@@ -39,6 +39,7 @@ public class MemorySessionStore implements ISessionsStore {
    private static final Logger LOG = LoggerFactory.getLogger(MemorySessionStore.class);

    private boolean supportMultiEndpoint = false;
+    private boolean supportMultiPCEndpoint = false;
    private boolean clientSupportKickoff = false;

    public static class Session implements Comparable<Session>{
@@ -287,6 +288,11 @@ public class MemorySessionStore implements ISessionsStore {
            Utility.printExecption(LOG, e);
        }

+        try {
+            supportMultiPCEndpoint = Boolean.parseBoolean(server.getConfig().getProperty(BrokerConstants.SERVER_MULTI_PC_ENDPOINT, "false"));
+        } catch (Exception e) {
+        }
+
        try {
            clientSupportKickoff = Boolean.parseBoolean(server.getConfig().getProperty(BrokerConstants.SERVER_CLIENT_SUPPORT_KICKOFF_EVENT, "false"));
        } catch (Exception e) {
@@ -385,7 +391,12 @@ public class MemorySessionStore implements ISessionsStore {
        }
        databaseStore.clearMultiUser(username, clientID);

-        if (!supportMultiEndpoint && platform > 0) {
+        if (!supportMultiEndpoint
+            && platform > 0
+            && !(platform == ProtoConstants.Platform.Platform_Windows && supportMultiPCEndpoint)
+            && !(platform == ProtoConstants.Platform.Platform_LINUX && supportMultiPCEndpoint)
+            && !(platform == ProtoConstants.Platform.Platform_OSX && supportMultiPCEndpoint)
+        ) {
            databaseStore.clearMultiEndpoint(username, clientID, platform);
            if (userSessions.get(username) != null) {
                Iterator<String> it = userSessions.get(username).iterator();
@@ -723,6 +734,11 @@ public class MemorySessionStore implements ISessionsStore {
    public ErrorCode kickoffPCClient(String operator, String pcClientId) {
        Session session = sessions.get(pcClientId);
        if (session != null) {
+            if(!operator.equals(session.getUsername())) {
+                LOG.error("kickoffPCClient failure, user {} don't have client {}", operator, pcClientId);
+                mServer.getProcessor().getMessagesStore().forceCleanOnlineStatus(operator, pcClientId);
+                return ErrorCode.ERROR_CODE_SUCCESS;
+            }
            if (session.getPlatform() == ProtoConstants.Platform.Platform_LINUX
                || session.getPlatform() == ProtoConstants.Platform.Platform_WEB
                || session.getPlatform() == ProtoConstants.Platform.Platform_Windows
@@ -731,8 +747,12 @@ public class MemorySessionStore implements ISessionsStore {
                sessions.remove(pcClientId);
                mServer.getProcessor().kickoffSession(session);
            } else {
+                LOG.error("session {} is not pc client:{}", pcClientId, session.getPlatform());
                return ErrorCode.ERROR_CODE_NOT_RIGHT;
            }
+        } else {
+            LOG.error("Can't find the session for client <{}>", pcClientId);
+            mServer.getProcessor().getMessagesStore().forceCleanOnlineStatus(operator, pcClientId);
        }
        return ErrorCode.ERROR_CODE_SUCCESS;
    }
@@ -742,10 +762,12 @@ public class MemorySessionStore implements ISessionsStore {
    public void disableSession(String userId, String clientId) {
        Session session = sessions.get(clientId);
        if (session != null && session.getDeleted() == 0 && (userId == null || session.getUsername().equals(userId))) {
-            databaseStore.updateSessionDeleted(session.getUsername(), clientId, 1);
-            ConcurrentSkipListSet<String> sessionSet = getUserSessionSet(session.username);
-            sessionSet.remove(clientId);
-            sessions.remove(clientId);
+            mServer.getProcessor().processOffline(session, true, () -> {
+                databaseStore.updateSessionDeleted(session.getUsername(), clientId, 1);
+                ConcurrentSkipListSet<String> sessionSet = getUserSessionSet(session.username);
+                sessionSet.remove(clientId);
+                sessions.remove(clientId);
+            });
        }
    }

@@ -763,23 +785,25 @@ public class MemorySessionStore implements ISessionsStore {
            return;
        }

-        ConcurrentSkipListSet<String> sessionSet = getUserSessionSet(session.username);
-        sessionSet.remove(clientID);
+        mServer.getProcessor().processOffline(session, true, () -> {
+            ConcurrentSkipListSet<String> sessionSet = getUserSessionSet(session.username);
+            sessionSet.remove(clientID);

-        // remove also the messages stored of type QoS1/2
-        LOG.info("Removing stored messages with QoS 1 and 2. ClientId={}", clientID);
+            // remove also the messages stored of type QoS1/2
+            LOG.info("Removing stored messages with QoS 1 and 2. ClientId={}", clientID);

-        session.secondPhaseStore.clear();
-        session.outboundFlightMessages.clear();
-        session.inboundFlightMessages.clear();
+            session.secondPhaseStore.clear();
+            session.outboundFlightMessages.clear();
+            session.inboundFlightMessages.clear();

-        LOG.info("Wiping existing subscriptions. ClientId={}", clientID);
+            LOG.info("Wiping existing subscriptions. ClientId={}", clientID);

-        //remove also the enqueued messages
-        dropQueue(clientID);
+            //remove also the enqueued messages
+            dropQueue(clientID);

-        // TODO this missing last step breaks the junit test
-        sessions.remove(clientID);
+            // TODO this missing last step breaks the junit test
+            sessions.remove(clientID);
+        });
    }
    @Override
    public boolean isMultiEndpointSupported() {
@@ -369,9 +369,6 @@ public class Server {
    private String getServerIp(IConfig config) {
        String serverIp = config.getProperty(BrokerConstants.SERVER_IP_PROPERTY_NAME);
        if (serverIp == null || serverIp.equals("0.0.0.0")) {
-            String warning = "警告：无效配置，server.ip不能为空，需要配置服务的公网IP地址或者域名才能在公网使用！！！\nIM服务将使用本地地址，只能在局域网内使用！";
-            System.out.println(warning);
-            LOG.error(warning);
            serverIp = Utility.getLocalAddress().getHostAddress();
        }
        return serverIp;
@@ -160,7 +160,7 @@ public class NettyAcceptor implements ServerAcceptor {
                                             IConfig props) throws IOException {
        LOG.info("Configuring TCP MQTT transport");
        final MoquetteIdleTimeoutHandler timeoutHandler = new MoquetteIdleTimeoutHandler();
-        String host = props.getProperty(BrokerConstants.HOST_PROPERTY_NAME);
+        String host = props.getProperty(BrokerConstants.HOST_PROPERTY_NAME, "0.0.0.0");
        String tcpPortProp = props.getProperty(PORT_PROPERTY_NAME, DISABLED_PORT_BIND);
        if (DISABLED_PORT_BIND.equals(tcpPortProp)) {
            LOG.info("Property {} has been set to {}. TCP MQTT will be disabled", BrokerConstants.PORT_PROPERTY_NAME,
@@ -18,6 +18,7 @@ package io.moquette.spi;

 import cn.wildfirechat.pojos.InputOutputUserInfo;
 import cn.wildfirechat.pojos.SystemSettingPojo;
+import cn.wildfirechat.proto.ProtoConstants;
 import cn.wildfirechat.proto.WFCMessage;
 import com.xiaoleilu.loServer.model.FriendData;
 import cn.wildfirechat.pojos.InputOutputUserBlockStatus;
@@ -101,11 +102,11 @@ public interface IMessagesStore {
    DatabaseStore getDatabaseStore();
    WFCMessage.Message storeMessage(String fromUser, String fromClientId, WFCMessage.Message message);
    void storeSensitiveMessage(WFCMessage.Message message);
-	int getNotifyReceivers(String fromUser, WFCMessage.Message.Builder message, Set<String> notifyReceivers);
+	int getNotifyReceivers(String fromUser, WFCMessage.Message.Builder message, Set<String> notifyReceivers, ProtoConstants.RequestSourceType requestSourceType);
    Set<String> getAllEnds();
    WFCMessage.PullMessageResult fetchMessage(String user, String exceptClientId, long fromMessageId, int pullType);
    WFCMessage.PullMessageResult loadRemoteMessages(String user, WFCMessage.Conversation conversation, long beforeUid, int count, Collection<Integer> contentTypes);
-    long insertUserMessages(String sender, int conversationType, String target, int line, int messageContentType, String userId, long messageId);
+    long insertUserMessages(String sender, int conversationType, String target, int line, int messageContentType, String userId, long messageId, boolean directing);
    WFCMessage.GroupInfo createGroup(String operator, WFCMessage.GroupInfo groupInfo, List<WFCMessage.GroupMember> memberList, String memberExtra, boolean isAdmin);
    ErrorCode addGroupMembers(String operator, boolean isAdmin, String groupId, List<WFCMessage.GroupMember> memberList, String extra);
    ErrorCode kickoffGroupMembers(String operator, boolean isAdmin, String groupId, List<String> memberList);
@@ -139,6 +140,8 @@ public interface IMessagesStore {

    ErrorCode modifyUserInfo(String userId, WFCMessage.ModifyMyInfoRequest request) throws Exception;

+    void forceCleanOnlineStatus(String userId, String clientId);
+
    void updateUserOnlineSetting(MemorySessionStore.Session session, boolean online);

    ErrorCode modifyUserStatus(String userId, int status);
@@ -147,7 +150,7 @@ public interface IMessagesStore {

    ErrorCode updateUserInfo(InputOutputUserInfo userInfo, int flag);
    void addUserInfo(WFCMessage.User user, String password) throws Exception;
-    void destoryUser(String userId);
+    void destroyUser(String userId);
    void updateUserInfo(WFCMessage.User user) throws Exception;
    WFCMessage.User getUserInfo(String userId);
    WFCMessage.User getUserInfoByName(String name);
@@ -190,6 +193,11 @@ public interface IMessagesStore {

    boolean checkChatroomParticipantIdelTime(MemorySessionStore.Session session);

+
+    String getApplicationAuthCode(String fromUser, String applicationId, int appType, String host);
+    String verifyApplicationAuthCode(String token, String applicationId, int type);
+    ErrorCode configApplication(String appId, int appType, long timestamp, String nonce, String signature);
+
    ErrorCode getUserSettings(String userId, long version, WFCMessage.GetUserSettingResult.Builder builder);
    WFCMessage.UserSettingEntry getUserSetting(String userId, int scope, String key);
    List<WFCMessage.UserSettingEntry> getUserSetting(String userId, int scope);
@@ -206,10 +214,11 @@ public interface IMessagesStore {
    void clearUserChannels(String userId);
    ErrorCode modifyChannelInfo(String operator, String channelId, int modifyType, String value);
    ErrorCode transferChannel(String operator, String channelId, String newOwner);
-    ErrorCode distoryChannel(String operator, String channelId, boolean isAdmin);
+    ErrorCode destroyChannel(String operator, String channelId, boolean isAdmin);
    List<WFCMessage.ChannelInfo> searchChannel(String keyword, boolean buzzy, int page);
    ErrorCode listenChannel(String operator, String channelId, boolean listen);
    WFCMessage.ChannelInfo getChannelInfo(String channelId);
+    boolean canSendMessageInChannel(String user, String channelId);
    boolean checkUserInChannel(String user, String channelId);
    Collection<String> getChannelSubscriber(String channelId);

@@ -224,6 +233,10 @@ public interface IMessagesStore {
    boolean isAllowRobotCustomGroupNotification();
    int getVisibleQuitKickoffNotification();

+    boolean isForwardMessageWithClientInfo();
+    boolean isRobotCallbackWithClientInfo();
+    boolean isChannelCallbackWithClientInfo();
+
    List<Integer> getClientForbiddenSendTypes();
    List<Integer> getBlackListExceptionTypes();
    List<Integer> getGroupMuteExceptionTypes();
@@ -16,6 +16,7 @@

 package io.moquette.spi.impl;

+import cn.wildfirechat.pojos.OutputClient;
 import cn.wildfirechat.pojos.OutputMessageData;
 import cn.wildfirechat.proto.ProtoConstants;
 import cn.wildfirechat.proto.WFCMessage;
@@ -24,7 +25,6 @@ import com.google.gson.Gson;
 import com.hazelcast.core.HazelcastInstance;
 import com.hazelcast.util.StringUtil;
 import cn.wildfirechat.pojos.OutputNotifyChannelSubscribeStatus;
-import cn.wildfirechat.pojos.SendMessageData;
 import com.xiaoleilu.loServer.model.FriendData;
 import io.moquette.persistence.*;
 import io.moquette.persistence.MemorySessionStore.Session;
@@ -35,6 +35,7 @@ import io.moquette.spi.ISessionsStore;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.handler.codec.mqtt.*;
+import win.liyufan.im.GsonUtil;
 import win.liyufan.im.HttpUtils;
 import win.liyufan.im.IMTopic;

@@ -160,7 +161,7 @@ public class MessagesPublisher {
        }
    }

-    private void publish2Receivers(String sender, int conversationType, String target, int line, long messageId, Collection<String> receivers, String pushContent, String pushData, String exceptClientId, int pullType, int messageContentType, long serverTime, int mentionType, List<String> mentionTargets, int persistFlag) {
+    private void publish2Receivers(String sender, int conversationType, String target, int line, long messageId, Collection<String> receivers, String pushContent, String pushData, String exceptClientId, int pullType, int messageContentType, long serverTime, int mentionType, List<String> mentionTargets, int persistFlag, boolean directing) {
        if (persistFlag == Transparent) {
            publishTransparentMessage2Receivers(messageId, receivers, pullType, exceptClientId);
            return;
@@ -176,10 +177,19 @@ public class MessagesPublisher {
                        if (message == null) {
                            message = m_messagesStore.getMessage(messageId);
                        }
+                        OutputClient outputClient = null;
+                        if(m_messagesStore.isRobotCallbackWithClientInfo() && !StringUtil.isNullOrEmpty(exceptClientId)) {
+                            Session session = m_sessionsStore.getSession(exceptClientId);
+                            if(session != null && session.getUsername().equals(sender)) {
+                                outputClient = new OutputClient(session.getPlatform(), exceptClientId);
+                            }
+                        }
+
                        final WFCMessage.Message finalMsg = message;
+                        OutputClient finalOutputClient = outputClient;
                        Server.getServer().getCallbackScheduler().execute(() -> {
                            try {
-                                HttpUtils.httpJsonPost(robot.getCallback(), new Gson().toJson(SendMessageData.fromProtoMessage(finalMsg), SendMessageData.class), HttpUtils.HttpPostType.POST_TYPE_Robot_Message_Callback);
+                                HttpUtils.httpJsonPost(robot.getCallback(), GsonUtil.gson.toJson(OutputMessageData.fromProtoMessage(finalMsg, finalOutputClient), OutputMessageData.class), HttpUtils.HttpPostType.POST_TYPE_Robot_Message_Callback);
                            } catch (Exception e) {
                                e.printStackTrace();
                                Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -191,7 +201,7 @@ public class MessagesPublisher {
            }
            long messageSeq;
            if (pullType != ProtoConstants.PullType.Pull_ChatRoom) {
-                messageSeq = m_messagesStore.insertUserMessages(sender, conversationType, target, line, messageContentType, user, messageId);
+                messageSeq = m_messagesStore.insertUserMessages(sender, conversationType, target, line, messageContentType, user, messageId, directing);
            } else {
                messageSeq = m_messagesStore.insertChatroomMessages(user, line, messageId);
            }
@@ -595,15 +605,30 @@ public class MessagesPublisher {
    public void publish2Receivers(WFCMessage.Message message, Set<String> receivers, String exceptClientId, int pullType) {
        if (message.getConversation().getType() == ProtoConstants.ConversationType.ConversationType_Channel) {
            WFCMessage.ChannelInfo channelInfo = m_messagesStore.getChannelInfo(message.getConversation().getTarget());
-            if (channelInfo != null && !StringUtil.isNullOrEmpty(channelInfo.getCallback())) {
+            if (channelInfo != null && !StringUtil.isNullOrEmpty(channelInfo.getCallback()) && channelInfo.getAutomatic() == 1 && !message.getFromUser().equals(channelInfo.getOwner())) {
+                OutputClient outputClient = null;
+                if(m_messagesStore.isChannelCallbackWithClientInfo() && !StringUtil.isNullOrEmpty(exceptClientId)) {
+                    Session session = m_sessionsStore.getSession(exceptClientId);
+                    if(session != null && session.getUsername().equals(message.getFromUser())) {
+                        outputClient = new OutputClient(session.getPlatform(), exceptClientId);
+                    }
+                }
+
+                OutputClient finalOutputClient = outputClient;
                Server.getServer().getCallbackScheduler().execute(() -> {
                    try {
-                        HttpUtils.httpJsonPost(channelInfo.getCallback() + "/message", new Gson().toJson(SendMessageData.fromProtoMessage(message), SendMessageData.class), HttpUtils.HttpPostType.POST_TYPE_Channel_Message_Callback);
+                        HttpUtils.httpJsonPost(channelInfo.getCallback() + "/message", GsonUtil.gson.toJson(OutputMessageData.fromProtoMessage(message, finalOutputClient), OutputMessageData.class), HttpUtils.HttpPostType.POST_TYPE_Channel_Message_Callback);
                    } catch (Exception e) {
                        e.printStackTrace();
                        Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
                    }
                });
+            } else {
+                if (channelInfo == null) {
+                    LOG.info("Channel {} not exist", message.getConversation().getTarget());
+                } else {
+                    LOG.info("Channel {} callback {}", message.getConversation().getTarget(), channelInfo.getCallback());
+                }
            }
        }
        long messageId = message.getMessageId();
@@ -621,8 +646,8 @@ public class MessagesPublisher {
                pushContent = "[语音]";
            } else if(type == ProtoConstants.ContentType.Video) {
                pushContent = "[视频]";
-            } else if(type == ProtoConstants.ContentType.RichMedia) {
-                pushContent = "[图文]";
+            } else if(type == ProtoConstants.ContentType.Link) {
+                pushContent = "[链接]";
            } else if(type == ProtoConstants.ContentType.File) {
                pushContent = "[文件]";
            } else if(type == ProtoConstants.ContentType.Sticker) {
@@ -638,14 +663,14 @@ public class MessagesPublisher {
                    message.getConversation().getType(), message.getConversation().getTarget(), message.getConversation().getLine(),
                    messageId,
                    receivers,
-                    pushContent, message.getContent().getPushData(), exceptClientId, pullType, message.getContent().getType(), message.getServerTimestamp(), message.getContent().getMentionedType(), message.getContent().getMentionedTargetList(), message.getContent().getPersistFlag());
+                    pushContent, message.getContent().getPushData(), exceptClientId, pullType, message.getContent().getType(), message.getServerTimestamp(), message.getContent().getMentionedType(), message.getContent().getMentionedTargetList(), message.getContent().getPersistFlag(), message.hasToUser() || !message.getToList().isEmpty());

    }

-    public void forwardMessage(final WFCMessage.Message message, String forwardUrl) {
+    public void forwardMessage(final WFCMessage.Message message, String forwardUrl, OutputClient outputClient) {
        Server.getServer().getCallbackScheduler().execute(() -> {
            try {
-                HttpUtils.httpJsonPost(forwardUrl, new Gson().toJson(OutputMessageData.fromProtoMessage(message), OutputMessageData.class), HttpUtils.HttpPostType.POST_TYPE_Forward_Message_Callback);
+                HttpUtils.httpJsonPost(forwardUrl, GsonUtil.gson.toJson(OutputMessageData.fromProtoMessage(message, outputClient), OutputMessageData.class), HttpUtils.HttpPostType.POST_TYPE_Forward_Message_Callback);
            } catch (Exception e) {
                e.printStackTrace();
                Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -655,7 +680,7 @@ public class MessagesPublisher {

    public void forwardMessageWithCallback(final WFCMessage.Message message, String forwardUrl, HttpUtils.HttpCallback callback) {
        try {
-            HttpUtils.httpJsonPost(forwardUrl, new Gson().toJson(OutputMessageData.fromProtoMessage(message), OutputMessageData.class), new HttpUtils.HttpCallback() {
+            HttpUtils.httpJsonPost(forwardUrl, GsonUtil.gson.toJson(OutputMessageData.fromProtoMessage(message), OutputMessageData.class), new HttpUtils.HttpCallback() {
                @Override
                public void onSuccess(String content) {
                    Server.getServer().getImBusinessScheduler().execute(()->{
@@ -677,13 +702,13 @@ public class MessagesPublisher {
    }

    public void notifyChannelListenStatusChanged(WFCMessage.ChannelInfo channelInfo, String user, boolean listen) {
-        if (channelInfo == null || StringUtil.isNullOrEmpty(channelInfo.getCallback())) {
+        if (channelInfo == null || StringUtil.isNullOrEmpty(channelInfo.getCallback()) || channelInfo.getAutomatic() == 0) {
            return;
        }

        Server.getServer().getCallbackScheduler().execute(() -> {
            try {
-                HttpUtils.httpJsonPost(channelInfo.getCallback() + "/subscribe", new Gson().toJson(new OutputNotifyChannelSubscribeStatus(user, channelInfo.getTargetId(), listen), OutputNotifyChannelSubscribeStatus.class), HttpUtils.HttpPostType.POST_TYPE_Channel_Subscriber_Event_Callback);
+                HttpUtils.httpJsonPost(channelInfo.getCallback() + "/subscribe", GsonUtil.gson.toJson(new OutputNotifyChannelSubscribeStatus(user, channelInfo.getTargetId(), listen), OutputNotifyChannelSubscribeStatus.class), HttpUtils.HttpPostType.POST_TYPE_Channel_Subscriber_Event_Callback);
            } catch (Exception e) {
                e.printStackTrace();
                Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -43,6 +43,7 @@ import io.netty.handler.codec.mqtt.*;
 import io.netty.handler.timeout.IdleStateHandler;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import win.liyufan.im.GsonUtil;
 import win.liyufan.im.HttpUtils;
 import win.liyufan.im.IMTopic;
 import win.liyufan.im.Utility;
@@ -264,7 +265,7 @@ public class ProtocolProcessor {
        if (!StringUtil.isNullOrEmpty(mUserOnlineStatusCallback)) {
            mServer.getCallbackScheduler().execute(() -> {
                try {
-                    HttpUtils.httpJsonPost(mUserOnlineStatusCallback, new Gson().toJson(new UserOnlineStatus(userId, clientId, platform, status, packageName)), HttpUtils.HttpPostType.POST_TYPE_User_Online_Event_Callback);
+                    HttpUtils.httpJsonPost(mUserOnlineStatusCallback, GsonUtil.gson.toJson(new UserOnlineStatus(userId, clientId, platform, status, packageName)), HttpUtils.HttpPostType.POST_TYPE_User_Online_Event_Callback);
                } catch (Exception e) {
                    e.printStackTrace();
                    Utility.printExecption(LOG, e, EVENT_CALLBACK_Exception);
@@ -307,7 +308,7 @@ public class ProtocolProcessor {
            }
            byte[] pwd = null;
            if (msg.variableHeader().hasPassword()) {
-                pwd = msg.payload().password();
+                pwd = msg.payload().passwordInBytes();

                MemorySessionStore.Session session = m_sessionsStore.getSession(clientId);
                if (session == null) {
@@ -619,17 +620,30 @@ public class ProtocolProcessor {

        String username = NettyUtils.userName(channel);
        MemorySessionStore.Session session = m_sessionsStore.getSession(clientID);
+        if(session != null) {
+            processOffline(session, clearSession, () -> {
+                ConnectionDescriptor oldConnDescr = new ConnectionDescriptor(clientID, channel);
+                if(connectionDescriptors.removeConnection(oldConnDescr)) {
+                    m_interceptor.notifyClientConnectionLost(clientID, username);
+                }
+            });
+        } else {
+            ConnectionDescriptor oldConnDescr = new ConnectionDescriptor(clientID, channel);
+            if(connectionDescriptors.removeConnection(oldConnDescr)) {
+                m_interceptor.notifyClientConnectionLost(clientID, username);
+            }
+        }
+    }
+
+    public void processOffline(MemorySessionStore.Session session, boolean logout, Runnable runnable) {
        if(session != null) {
            session.refreshLastActiveTime();
-            forwardOnlineStatusEvent(username, clientID, session.getPlatform(), clearSession ? UserOnlineStatus.LOGOUT : UserOnlineStatus.OFFLINE, session.getAppName());
+            forwardOnlineStatusEvent(session.getUsername(), session.getClientID(), session.getPlatform(), logout ? UserOnlineStatus.LOGOUT : UserOnlineStatus.OFFLINE, session.getAppName());
+            if(runnable != null) {
+                runnable.run();
+            }
            m_messagesStore.updateUserOnlineSetting(session, false);
        }
-
-        ConnectionDescriptor oldConnDescr = new ConnectionDescriptor(clientID, channel);
-        if(connectionDescriptors.removeConnection(oldConnDescr)) {
-            m_interceptor.notifyClientConnectionLost(clientID, username);
-        }
-
    }

    /**
@@ -57,6 +57,7 @@ import io.netty.handler.codec.mqtt.MqttFixedHeader;
 import io.netty.handler.codec.mqtt.MqttMessageType;
 import io.netty.handler.codec.mqtt.MqttPublishMessage;
 import cn.wildfirechat.common.ErrorCode;
+import win.liyufan.im.GsonUtil;
 import win.liyufan.im.IMTopic;
 import win.liyufan.im.RateLimiter;
 import win.liyufan.im.Utility;
@@ -142,7 +143,7 @@ public class Qos1PublishHandler extends QosPublishHandler {
                out.addSession(userId, session.getClientID(), session.getPlatform(), status, session.getLastActiveTime());
            }

-            callback.onRouteHandled(new Gson().toJson(out).getBytes());
+            callback.onRouteHandled(GsonUtil.gson.toJson(out).getBytes());
        });
    }

@@ -163,16 +164,19 @@ public class Qos1PublishHandler extends QosPublishHandler {
                        } else {
                            MemorySessionStore.Session session = m_sessionStore.getSession(clientID);
                            if (session != null && session.getUsername().equals(fromUser)) {
-                                if (data.length > 7*1024 && session.getMqttVersion().protocolLevel() >= MqttVersion.Wildfire_1.protocolLevel()) {
+                                if (data.length > 7*1024 && session.getMqttVersion().protocolLevel() >= MqttVersion.MQTT_5.protocolLevel()) {
                                    ByteArrayOutputStream out = new ByteArrayOutputStream();
-                                    GZIPOutputStream gzip;
+                                    GZIPOutputStream gzip = null;
                                    try {
                                        gzip = new GZIPOutputStream(out);
                                        gzip.write(data);
-                                        gzip.close();
                                    } catch (Exception e) {
                                        e.printStackTrace();
                                        Utility.printExecption(LOG, e);
+                                    } finally {
+                                        if(gzip != null) {
+                                            gzip.close();
+                                        }
                                    }
                                    data = out.toByteArray();
                                    code = (byte)ErrorCode.ERROR_CODE_SUCCESS_GZIPED.code;
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -16,13 +16,30 @@

 package io.netty.handler.codec.mqtt;

+import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.DecoderException;
+import io.netty.util.Attribute;
+import io.netty.util.AttributeKey;

 final class MqttCodecUtil {

    private static final char[] TOPIC_WILDCARDS = {'#', '+'};
-    private static final int MIN_CLIENT_ID_LENGTH = 1;
-    private static final int MAX_CLIENT_ID_LENGTH = 23;
+
+    static final AttributeKey<MqttVersion> MQTT_VERSION_KEY = AttributeKey.valueOf("NETTY_CODEC_MQTT_VERSION");
+
+    static MqttVersion getMqttVersion(ChannelHandlerContext ctx) {
+        Attribute<MqttVersion> attr = ctx.channel().attr(MQTT_VERSION_KEY);
+        MqttVersion version = attr.get();
+        if (version == null) {
+            return MqttVersion.MQTT_3_1_1;
+        }
+        return version;
+    }
+
+    static void setMqttVersion(ChannelHandlerContext ctx, MqttVersion version) {
+        Attribute<MqttVersion> attr = ctx.channel().attr(MQTT_VERSION_KEY);
+        attr.set(version);
+    }

    static boolean isValidPublishTopicName(String topicName) {
        // publish topic name must not contain any wildcard
@@ -38,20 +55,20 @@ final class MqttCodecUtil {
        return messageId != 0;
    }

-    static boolean isValidClientId(MqttVersion mqttVersion, String clientId) {
+    static boolean isValidClientId(MqttVersion mqttVersion, int maxClientIdLength, String clientId) {
        if (mqttVersion == MqttVersion.MQTT_3_1) {
-            return clientId != null && clientId.length() >= MIN_CLIENT_ID_LENGTH &&
-                clientId.length() <= MAX_CLIENT_ID_LENGTH;
+            return clientId != null && clientId.length() >= MqttConstant.MIN_CLIENT_ID_LENGTH &&
+                clientId.length() <= maxClientIdLength;
        }
        if (mqttVersion.protocolLevel() >= MqttVersion.MQTT_3_1_1.protocolLevel()) {
-            // In 3.1.3.1 Client Identifier of MQTT 3.1.1 specification, The Server MAY allow ClientId’s
+            // In 3.1.3.1 Client Identifier of MQTT 3.1.1 and 5.0 specifications, The Server MAY allow ClientId’s
            // that contain more than 23 encoded bytes. And, The Server MAY allow zero-length ClientId.
            return clientId != null;
        }
        throw new IllegalArgumentException(mqttVersion + " is unknown mqtt version");
    }

-    static MqttFixedHeader validateFixedHeader(MqttFixedHeader mqttFixedHeader) {
+    static MqttFixedHeader validateFixedHeader(ChannelHandlerContext ctx, MqttFixedHeader mqttFixedHeader) {
        switch (mqttFixedHeader.messageType()) {
            case PUBREL:
            case SUBSCRIBE:
@@ -59,6 +76,12 @@ final class MqttCodecUtil {
                if (mqttFixedHeader.qosLevel() != MqttQoS.AT_LEAST_ONCE) {
                    throw new DecoderException(mqttFixedHeader.messageType().name() + " message must have QoS 1");
                }
+                return mqttFixedHeader;
+            case AUTH:
+                if (MqttCodecUtil.getMqttVersion(ctx) != MqttVersion.MQTT_5) {
+                    throw new DecoderException("AUTH message requires at least MQTT 5");
+                }
+                return mqttFixedHeader;
            default:
                return mqttFixedHeader;
        }
@@ -75,7 +98,7 @@ final class MqttCodecUtil {
            case UNSUBACK:
            case PINGREQ:
            case PINGRESP:
-            //case DISCONNECT:
+            case DISCONNECT:
                if (mqttFixedHeader.isDup() ||
                        mqttFixedHeader.qosLevel() != MqttQoS.AT_MOST_ONCE ||
                        mqttFixedHeader.isRetain()) {
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -17,7 +17,7 @@
 package io.netty.handler.codec.mqtt;

 /**
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#connack">MQTTV3.1/connack</a>
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#connack">MQTTV3.1/connack</a>
 */
 public final class MqttConnAckMessage extends MqttMessage {

@@ -28,7 +28,7 @@ public final class MqttConnAckMessage extends MqttMessage {
    public MqttConnAckMessage(MqttFixedHeader mqttFixedHeader, MqttConnAckVariableHeader variableHeader, MqttConnectAckPayload payload) {
        super(mqttFixedHeader, variableHeader, payload);
    }
-
+    
    @Override
    public MqttConnAckVariableHeader variableHeader() {
        return (MqttConnAckVariableHeader) super.variableHeader();
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -27,9 +27,17 @@ public final class MqttConnAckVariableHeader {

    private final boolean sessionPresent;

+    private final MqttProperties properties;
+
    public MqttConnAckVariableHeader(MqttConnectReturnCode connectReturnCode, boolean sessionPresent) {
+        this(connectReturnCode, sessionPresent, MqttProperties.NO_PROPERTIES);
+    }
+
+    public MqttConnAckVariableHeader(MqttConnectReturnCode connectReturnCode, boolean sessionPresent,
+                                     MqttProperties properties) {
        this.connectReturnCode = connectReturnCode;
        this.sessionPresent = sessionPresent;
+        this.properties = MqttProperties.withEmptyDefaults(properties);
    }

    public MqttConnectReturnCode connectReturnCode() {
@@ -40,6 +48,10 @@ public final class MqttConnAckVariableHeader {
        return sessionPresent;
    }

+    public MqttProperties properties() {
+        return properties;
+    }
+
    @Override
    public String toString() {
        return new StringBuilder(StringUtil.simpleClassName(this))
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -17,7 +17,7 @@
 package io.netty.handler.codec.mqtt;

 /**
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#connect">MQTTV3.1/connect</a>
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#connect">MQTTV3.1/connect</a>
 */
 public final class MqttConnectMessage extends MqttMessage {

@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -16,6 +16,9 @@

 package io.netty.handler.codec.mqtt;

+import java.util.Arrays;
+
+import io.netty.util.CharsetUtil;
 import io.netty.util.internal.StringUtil;

 /**
@@ -24,18 +27,55 @@ import io.netty.util.internal.StringUtil;
 public final class MqttConnectPayload {

    private final String clientIdentifier;
+    private final MqttProperties willProperties;
    private final String willTopic;
-    private final String willMessage;
+    private final byte[] willMessage;
    private final String userName;
    private final byte[] password;

+    /**
+     * @deprecated use {@link MqttConnectPayload#MqttConnectPayload(String,
+     * MqttProperties, String, byte[], String, byte[])} instead
+     */
+    @Deprecated
    public MqttConnectPayload(
            String clientIdentifier,
            String willTopic,
            String willMessage,
            String userName,
+            String password) {
+        this(
+          clientIdentifier,
+          MqttProperties.NO_PROPERTIES,
+          willTopic,
+          willMessage.getBytes(CharsetUtil.UTF_8),
+          userName,
+          password.getBytes(CharsetUtil.UTF_8));
+    }
+
+    public MqttConnectPayload(
+            String clientIdentifier,
+            String willTopic,
+            byte[] willMessage,
+            String userName,
+            byte[] password) {
+        this(clientIdentifier,
+                MqttProperties.NO_PROPERTIES,
+                willTopic,
+                willMessage,
+                userName,
+                password);
+    }
+
+    public MqttConnectPayload(
+            String clientIdentifier,
+            MqttProperties willProperties,
+            String willTopic,
+            byte[] willMessage,
+            String userName,
            byte[] password) {
        this.clientIdentifier = clientIdentifier;
+        this.willProperties = MqttProperties.withEmptyDefaults(willProperties);
        this.willTopic = willTopic;
        this.willMessage = willMessage;
        this.userName = userName;
@@ -46,11 +86,23 @@ public final class MqttConnectPayload {
        return clientIdentifier;
    }

+    public MqttProperties willProperties() {
+        return willProperties;
+    }
+
    public String willTopic() {
        return willTopic;
    }

+    /**
+     * @deprecated use {@link MqttConnectPayload#willMessageInBytes()} instead
+     */
+    @Deprecated
    public String willMessage() {
+        return willMessage == null ? null : new String(willMessage, CharsetUtil.UTF_8);
+    }
+
+    public byte[] willMessageInBytes() {
        return willMessage;
    }

@@ -58,7 +110,15 @@ public final class MqttConnectPayload {
        return userName;
    }

-    public byte[] password() {
+    /**
+     * @deprecated use {@link MqttConnectPayload#passwordInBytes()} instead
+     */
+    @Deprecated
+    public String password() {
+        return password == null ? null : new String(password, CharsetUtil.UTF_8);
+    }
+
+    public byte[] passwordInBytes() {
        return password;
    }

@@ -68,9 +128,9 @@ public final class MqttConnectPayload {
            .append('[')
            .append("clientIdentifier=").append(clientIdentifier)
            .append(", willTopic=").append(willTopic)
-            .append(", willMessage=").append(willMessage)
+            .append(", willMessage=").append(Arrays.toString(willMessage))
            .append(", userName=").append(userName)
-            .append(", password=").append(password)
+            .append(", password=").append(Arrays.toString(password))
            .append(']')
            .toString();
    }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -16,31 +16,52 @@

 package io.netty.handler.codec.mqtt;

-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-
 /**
 * Return Code of {@link MqttConnAckMessage}
 */
 public enum MqttConnectReturnCode {
    CONNECTION_ACCEPTED((byte) 0x00),
+    //MQTT 3 codes
    CONNECTION_REFUSED_UNACCEPTABLE_PROTOCOL_VERSION((byte) 0X01),
    CONNECTION_REFUSED_IDENTIFIER_REJECTED((byte) 0x02),
    CONNECTION_REFUSED_SERVER_UNAVAILABLE((byte) 0x03),
    CONNECTION_REFUSED_BAD_USER_NAME_OR_PASSWORD((byte) 0x04),
    CONNECTION_REFUSED_NOT_AUTHORIZED((byte) 0x05),
    CONNECTION_REFUSED_UNEXPECT_NODE((byte) 0X06),
-    CONNECTION_REFUSED_SESSION_NOT_EXIST((byte) 0x07);
+    CONNECTION_REFUSED_SESSION_NOT_EXIST((byte) 0x07),
+    //MQTT 5 codes
+    CONNECTION_REFUSED_UNSPECIFIED_ERROR((byte) 0x80),
+    CONNECTION_REFUSED_MALFORMED_PACKET((byte) 0x81),
+    CONNECTION_REFUSED_PROTOCOL_ERROR((byte) 0x82),
+    CONNECTION_REFUSED_IMPLEMENTATION_SPECIFIC((byte) 0x83),
+    CONNECTION_REFUSED_UNSUPPORTED_PROTOCOL_VERSION((byte) 0x84),
+    CONNECTION_REFUSED_CLIENT_IDENTIFIER_NOT_VALID((byte) 0x85),
+    CONNECTION_REFUSED_BAD_USERNAME_OR_PASSWORD((byte) 0x86),
+    CONNECTION_REFUSED_NOT_AUTHORIZED_5((byte) 0x87),
+    CONNECTION_REFUSED_SERVER_UNAVAILABLE_5((byte) 0x88),
+    CONNECTION_REFUSED_SERVER_BUSY((byte) 0x89),
+    CONNECTION_REFUSED_BANNED((byte) 0x8A),
+    CONNECTION_REFUSED_BAD_AUTHENTICATION_METHOD((byte) 0x8C),
+    CONNECTION_REFUSED_TOPIC_NAME_INVALID((byte) 0x90),
+    CONNECTION_REFUSED_PACKET_TOO_LARGE((byte) 0x95),
+    CONNECTION_REFUSED_QUOTA_EXCEEDED((byte) 0x97),
+    CONNECTION_REFUSED_PAYLOAD_FORMAT_INVALID((byte) 0x99),
+    CONNECTION_REFUSED_RETAIN_NOT_SUPPORTED((byte) 0x9A),
+    CONNECTION_REFUSED_QOS_NOT_SUPPORTED((byte) 0x9B),
+    CONNECTION_REFUSED_USE_ANOTHER_SERVER((byte) 0x9C),
+    CONNECTION_REFUSED_SERVER_MOVED((byte) 0x9D),
+    CONNECTION_REFUSED_CONNECTION_RATE_EXCEEDED((byte) 0x9F);

-    private static final Map<Byte, MqttConnectReturnCode> VALUE_TO_CODE_MAP;
+    private static final MqttConnectReturnCode[] VALUES;

    static {
-        final Map<Byte, MqttConnectReturnCode> valueMap = new HashMap<Byte, MqttConnectReturnCode>();
-        for (MqttConnectReturnCode code: values()) {
-            valueMap.put(code.byteValue, code);
+        MqttConnectReturnCode[] values = values();
+        VALUES = new MqttConnectReturnCode[160];
+        for (MqttConnectReturnCode code : values) {
+            final int unsignedByte = code.byteValue & 0xFF;
+            // Suppress a warning about out of bounds access since the enum contains only correct values
+            VALUES[unsignedByte] = code;    // lgtm [java/index-out-of-bounds]
        }
-        VALUE_TO_CODE_MAP = Collections.unmodifiableMap(valueMap);
    }

    private final byte byteValue;
@@ -54,9 +75,16 @@ public enum MqttConnectReturnCode {
    }

    public static MqttConnectReturnCode valueOf(byte b) {
-        if (VALUE_TO_CODE_MAP.containsKey(b)) {
-            return VALUE_TO_CODE_MAP.get(b);
+        final int unsignedByte = b & 0xFF;
+        MqttConnectReturnCode mqttConnectReturnCode = null;
+        try {
+            mqttConnectReturnCode = VALUES[unsignedByte];
+        } catch (ArrayIndexOutOfBoundsException ignored) {
+            // no op
        }
-        throw new IllegalArgumentException("unknown connect return code: " + (b & 0xFF));
+        if (mqttConnectReturnCode == null) {
+            throw new IllegalArgumentException("unknown connect return code: " + unsignedByte);
+        }
+        return mqttConnectReturnCode;
    }
 }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -32,6 +32,7 @@ public final class MqttConnectVariableHeader {
    private final boolean isWillFlag;
    private final boolean isCleanSession;
    private final int keepAliveTimeSeconds;
+    private final MqttProperties properties;

    public MqttConnectVariableHeader(
            String name,
@@ -43,6 +44,29 @@ public final class MqttConnectVariableHeader {
            boolean isWillFlag,
            boolean isCleanSession,
            int keepAliveTimeSeconds) {
+        this(name,
+                version,
+                hasUserName,
+                hasPassword,
+                isWillRetain,
+                willQos,
+                isWillFlag,
+                isCleanSession,
+                keepAliveTimeSeconds,
+                MqttProperties.NO_PROPERTIES);
+    }
+
+    public MqttConnectVariableHeader(
+            String name,
+            int version,
+            boolean hasUserName,
+            boolean hasPassword,
+            boolean isWillRetain,
+            int willQos,
+            boolean isWillFlag,
+            boolean isCleanSession,
+            int keepAliveTimeSeconds,
+            MqttProperties properties) {
        this.name = name;
        this.version = version;
        this.hasUserName = hasUserName;
@@ -52,6 +76,7 @@ public final class MqttConnectVariableHeader {
        this.isWillFlag = isWillFlag;
        this.isCleanSession = isCleanSession;
        this.keepAliveTimeSeconds = keepAliveTimeSeconds;
+        this.properties = MqttProperties.withEmptyDefaults(properties);
    }

    public String name() {
@@ -90,6 +115,10 @@ public final class MqttConnectVariableHeader {
        return keepAliveTimeSeconds;
    }

+    public MqttProperties properties() {
+        return properties;
+    }
+
    @Override
    public String toString() {
        return new StringBuilder(StringUtil.simpleClassName(this))
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.handler.codec.mqtt;
+
+public final class MqttConstant {
+
+    private MqttConstant() {
+    }
+
+    /**
+     * Default max bytes in message
+     */
+    public static final int DEFAULT_MAX_BYTES_IN_MESSAGE = 262144; //256KB
+
+    /**
+     * min client id length
+     */
+    public static final int MIN_CLIENT_ID_LENGTH = 1;
+
+    /**
+     * Default max client id length,In the mqtt3.1 protocol,
+     * the default maximum Client Identifier length is 23
+     */
+    public static final int DEFAULT_MAX_CLIENT_ID_LENGTH = 23;
+
+}
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -20,26 +20,22 @@ import io.netty.buffer.ByteBuf;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.DecoderException;
 import io.netty.handler.codec.ReplayingDecoder;
-import io.netty.handler.codec.mqtt.MqttDecoder.DecoderState;
+import io.netty.handler.codec.TooLongFrameException;
 import io.netty.util.CharsetUtil;
+import io.netty.util.internal.ObjectUtil;

 import java.util.ArrayList;
 import java.util.List;

-import static io.netty.handler.codec.mqtt.MqttCodecUtil.isValidClientId;
-import static io.netty.handler.codec.mqtt.MqttCodecUtil.isValidMessageId;
-import static io.netty.handler.codec.mqtt.MqttCodecUtil.isValidPublishTopicName;
-import static io.netty.handler.codec.mqtt.MqttCodecUtil.resetUnusedFields;
-import static io.netty.handler.codec.mqtt.MqttCodecUtil.validateFixedHeader;
-
 /**
 * Decodes Mqtt messages from bytes, following
- * <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html">
- *     the MQTT protocol specification v3.1</a>
+ * the MQTT protocol specification
+ * <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html">v3.1</a>
+ * or
+ * <a href="https://docs.oasis-open.org/mqtt/mqtt/v5.0/mqtt-v5.0.html">v5.0</a>, depending on the
+ * version specified in the CONNECT message that first goes through the channel.
 */
-public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
-
-    private static final int DEFAULT_MAX_BYTES_IN_MESSAGE = 262144; //256K
+public final class MqttDecoder extends ReplayingDecoder<MqttDecoder.DecoderState> {

    /**
     * States of the decoder.
@@ -58,31 +54,42 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
    private int bytesRemainingInVariablePart;

    private final int maxBytesInMessage;
+    private final int maxClientIdLength;

    public MqttDecoder() {
-      this(DEFAULT_MAX_BYTES_IN_MESSAGE);
+      this(MqttConstant.DEFAULT_MAX_BYTES_IN_MESSAGE, MqttConstant.DEFAULT_MAX_CLIENT_ID_LENGTH);
    }

    public MqttDecoder(int maxBytesInMessage) {
+        this(maxBytesInMessage, MqttConstant.DEFAULT_MAX_CLIENT_ID_LENGTH);
+    }
+
+    public MqttDecoder(int maxBytesInMessage, int maxClientIdLength) {
        super(DecoderState.READ_FIXED_HEADER);
-        this.maxBytesInMessage = maxBytesInMessage;
+        this.maxBytesInMessage = ObjectUtil.checkPositive(maxBytesInMessage, "maxBytesInMessage");
+        this.maxClientIdLength = ObjectUtil.checkPositive(maxClientIdLength, "maxClientIdLength");
    }

    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) throws Exception {
        switch (state()) {
-            case READ_FIXED_HEADER:
-                mqttFixedHeader = decodeFixedHeader(buffer);
+            case READ_FIXED_HEADER: try {
+                mqttFixedHeader = decodeFixedHeader(ctx, buffer);
                bytesRemainingInVariablePart = mqttFixedHeader.remainingLength();
                checkpoint(DecoderState.READ_VARIABLE_HEADER);
                // fall through
+            } catch (Exception cause) {
+                out.add(invalidMessage(cause));
+                return;
+            }

            case READ_VARIABLE_HEADER:  try {
-                if (bytesRemainingInVariablePart > maxBytesInMessage) {
-                    throw new DecoderException("too large message: " + bytesRemainingInVariablePart + " bytes");
-                }
-                final Result<?> decodedVariableHeader = decodeVariableHeader(buffer, mqttFixedHeader);
+                final Result<?> decodedVariableHeader = decodeVariableHeader(ctx, buffer, mqttFixedHeader);
                variableHeader = decodedVariableHeader.value;
+                if (bytesRemainingInVariablePart > maxBytesInMessage) {
+                    buffer.skipBytes(actualReadableBytes());
+                    throw new TooLongFrameException("too large message: " + bytesRemainingInVariablePart + " bytes");
+                }
                bytesRemainingInVariablePart -= decodedVariableHeader.numberOfBytesConsumed;
                checkpoint(DecoderState.READ_PAYLOAD);
                // fall through
@@ -94,9 +101,11 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
            case READ_PAYLOAD: try {
                final Result<?> decodedPayload =
                        decodePayload(
+                                ctx,
                                buffer,
                                mqttFixedHeader.messageType(),
                                bytesRemainingInVariablePart,
+                                maxClientIdLength,
                                variableHeader);
                bytesRemainingInVariablePart -= decodedPayload.numberOfBytesConsumed;
                if (bytesRemainingInVariablePart != 0) {
@@ -129,16 +138,20 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {

    private MqttMessage invalidMessage(Throwable cause) {
      checkpoint(DecoderState.BAD_MESSAGE);
-      return MqttMessageFactory.newInvalidMessage(cause);
+      return MqttMessageFactory.newInvalidMessage(mqttFixedHeader, variableHeader, cause);
    }

    /**
-     * Decodes the fixed header. It's one byte for the flags and then variable bytes for the remaining length.
+     * Decodes the fixed header. It's one byte for the flags and then variable
+     * bytes for the remaining length.
+     *
+     * @see
+     * https://docs.oasis-open.org/mqtt/mqtt/v3.1.1/errata01/os/mqtt-v3.1.1-errata01-os-complete.html#_Toc442180841
     *
     * @param buffer the buffer to decode from
     * @return the fixed header
     */
-    private static MqttFixedHeader decodeFixedHeader(ByteBuf buffer) {
+    private static MqttFixedHeader decodeFixedHeader(ChannelHandlerContext ctx, ByteBuf buffer) {
        short b1 = buffer.readUnsignedByte();

        MqttMessageType messageType = MqttMessageType.valueOf(b1 >> 4);
@@ -146,6 +159,59 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
        int qosLevel = (b1 & 0x06) >> 1;
        boolean retain = (b1 & 0x01) != 0;

+        switch (messageType) {
+            case PUBLISH:
+                if (qosLevel == 3) {
+                    throw new DecoderException("Illegal QOS Level in fixed header of PUBLISH message ("
+                            + qosLevel + ')');
+                }
+                break;
+
+            case PUBREL:
+            case SUBSCRIBE:
+            case UNSUBSCRIBE:
+                if (dupFlag) {
+                    throw new DecoderException("Illegal BIT 3 in fixed header of " + messageType
+                            + " message, must be 0, found 1");
+                }
+                if (qosLevel != 1) {
+                    throw new DecoderException("Illegal QOS Level in fixed header of " + messageType
+                            + " message, must be 1, found " + qosLevel);
+                }
+                if (retain) {
+                    throw new DecoderException("Illegal BIT 0 in fixed header of " + messageType
+                            + " message, must be 0, found 1");
+                }
+                break;
+
+            case AUTH:
+            case CONNACK:
+            case CONNECT:
+            case DISCONNECT:
+            case PINGREQ:
+            case PINGRESP:
+            case PUBACK:
+            case PUBCOMP:
+            case PUBREC:
+            case SUBACK:
+            case UNSUBACK:
+                if (dupFlag) {
+                    throw new DecoderException("Illegal BIT 3 in fixed header of " + messageType
+                            + " message, must be 0, found 1");
+                }
+                if (qosLevel != 0) {
+                    throw new DecoderException("Illegal BIT 2 or 1 in fixed header of " + messageType
+                            + " message, must be 0, found " + qosLevel);
+                }
+                if (retain) {
+                    throw new DecoderException("Illegal BIT 0 in fixed header of " + messageType
+                            + " message, must be 0, found 1");
+                }
+                break;
+            default:
+                throw new DecoderException("Unknown message type, do not know how to validate fixed header");
+        }
+
        int remainingLength = 0;
        int multiplier = 1;
        short digit;
@@ -163,7 +229,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
        }
        MqttFixedHeader decodedFixedHeader =
                new MqttFixedHeader(messageType, dupFlag, MqttQoS.valueOf(qosLevel), retain, remainingLength);
-        return validateFixedHeader(resetUnusedFields(decodedFixedHeader));
+        return MqttCodecUtil.validateFixedHeader(ctx, MqttCodecUtil.resetUnusedFields(decodedFixedHeader));
    }

    /**
@@ -172,50 +238,60 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
     * @param mqttFixedHeader MqttFixedHeader of the same message
     * @return the variable header
     */
-    private static Result<?> decodeVariableHeader(ByteBuf buffer, MqttFixedHeader mqttFixedHeader) {
+    private Result<?> decodeVariableHeader(ChannelHandlerContext ctx, ByteBuf buffer, MqttFixedHeader mqttFixedHeader) {
        switch (mqttFixedHeader.messageType()) {
            case CONNECT:
-                return decodeConnectionVariableHeader(buffer);
+                return decodeConnectionVariableHeader(ctx, buffer);

            case CONNACK:
-                return decodeConnAckVariableHeader(buffer);
+                return decodeConnAckVariableHeader(ctx, buffer);

-            case SUBSCRIBE:
            case UNSUBSCRIBE:
+            case SUBSCRIBE:
            case SUBACK:
            case UNSUBACK:
+                return decodeMessageIdAndPropertiesVariableHeader(ctx, buffer);
+
            case PUBACK:
            case PUBREC:
            case PUBCOMP:
            case PUBREL:
-                return decodeMessageIdVariableHeader(buffer);
+                return decodePubReplyMessage(buffer);

            case PUBLISH:
-                return decodePublishVariableHeader(buffer, mqttFixedHeader);
+                return decodePublishVariableHeader(ctx, buffer, mqttFixedHeader);
+
+            case DISCONNECT:
+            case AUTH:
+                return decodeReasonCodeAndPropertiesVariableHeader(buffer);

            case PINGREQ:
            case PINGRESP:
-            case DISCONNECT:
                // Empty variable header
                return new Result<Object>(null, 0);
+            default:
+                //shouldn't reach here
+                throw new DecoderException("Unknown message type: " + mqttFixedHeader.messageType());
        }
-        return new Result<Object>(null, 0); //should never reach here
    }

-    private static Result<MqttConnectVariableHeader> decodeConnectionVariableHeader(ByteBuf buffer) {
+    private static Result<MqttConnectVariableHeader> decodeConnectionVariableHeader(
+            ChannelHandlerContext ctx,
+            ByteBuf buffer) {
        final Result<String> protoString = decodeString(buffer);
        int numberOfBytesConsumed = protoString.numberOfBytesConsumed;

        final byte protocolLevel = buffer.readByte();
        numberOfBytesConsumed += 1;

-        final MqttVersion mqttVersion = MqttVersion.fromProtocolNameAndLevel(protoString.value, protocolLevel);
+        MqttVersion version = MqttVersion.fromProtocolNameAndLevel(protoString.value, protocolLevel);
+        MqttCodecUtil.setMqttVersion(ctx, version);

        final int b1 = buffer.readUnsignedByte();
        numberOfBytesConsumed += 1;

-        final Result<Integer> keepAlive = decodeMsbLsb(buffer);
-        numberOfBytesConsumed += keepAlive.numberOfBytesConsumed;
+        final int keepAlive = decodeMsbLsb(buffer);
+        numberOfBytesConsumed += 2;

        final boolean hasUserName = (b1 & 0x80) == 0x80;
        final boolean hasPassword = (b1 & 0x40) == 0x40;
@@ -223,69 +299,178 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
        final int willQos = (b1 & 0x18) >> 3;
        final boolean willFlag = (b1 & 0x04) == 0x04;
        final boolean cleanSession = (b1 & 0x02) == 0x02;
-        if (mqttVersion.protocolLevel() >= MqttVersion.MQTT_3_1_1.protocolLevel()) {
+        if (version == MqttVersion.MQTT_3_1_1 || version == MqttVersion.MQTT_5) {
            final boolean zeroReservedFlag = (b1 & 0x01) == 0x0;
            if (!zeroReservedFlag) {
                // MQTT v3.1.1: The Server MUST validate that the reserved flag in the CONNECT Control Packet is
                // set to zero and disconnect the Client if it is not zero.
-                // See http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc385349230
+                // See https://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc385349230
                throw new DecoderException("non-zero reserved flag");
            }
        }

+        final MqttProperties properties;
+        if (version == MqttVersion.MQTT_5) {
+            final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
+            properties = propertiesResult.value;
+            numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
+        } else {
+            properties = MqttProperties.NO_PROPERTIES;
+        }
+
        final MqttConnectVariableHeader mqttConnectVariableHeader = new MqttConnectVariableHeader(
-                mqttVersion.protocolName(),
-                mqttVersion.protocolLevel(),
+                version.protocolName(),
+                version.protocolLevel(),
                hasUserName,
                hasPassword,
                willRetain,
                willQos,
                willFlag,
                cleanSession,
-                keepAlive.value);
+                keepAlive,
+                properties);
        return new Result<MqttConnectVariableHeader>(mqttConnectVariableHeader, numberOfBytesConsumed);
    }

-    private static Result<MqttConnAckVariableHeader> decodeConnAckVariableHeader(ByteBuf buffer) {
+    private static Result<MqttConnAckVariableHeader> decodeConnAckVariableHeader(
+            ChannelHandlerContext ctx,
+            ByteBuf buffer) {
+        final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
        final boolean sessionPresent = (buffer.readUnsignedByte() & 0x01) == 0x01;
        byte returnCode = buffer.readByte();
-        final int numberOfBytesConsumed = 2;
+        int numberOfBytesConsumed = 2;
+
+        final MqttProperties properties;
+        if (mqttVersion == MqttVersion.MQTT_5) {
+            final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
+            properties = propertiesResult.value;
+            numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
+        } else {
+            properties = MqttProperties.NO_PROPERTIES;
+        }
+
        final MqttConnAckVariableHeader mqttConnAckVariableHeader =
-                new MqttConnAckVariableHeader(MqttConnectReturnCode.valueOf(returnCode), sessionPresent);
+                new MqttConnAckVariableHeader(MqttConnectReturnCode.valueOf(returnCode), sessionPresent, properties);
        return new Result<MqttConnAckVariableHeader>(mqttConnAckVariableHeader, numberOfBytesConsumed);
    }

-    private static Result<MqttMessageIdVariableHeader> decodeMessageIdVariableHeader(ByteBuf buffer) {
-        final Result<Integer> messageId = decodeMessageId(buffer);
-        return new Result<MqttMessageIdVariableHeader>(
-                MqttMessageIdVariableHeader.from(messageId.value),
-                messageId.numberOfBytesConsumed);
+    private static Result<MqttMessageIdAndPropertiesVariableHeader> decodeMessageIdAndPropertiesVariableHeader(
+            ChannelHandlerContext ctx,
+            ByteBuf buffer) {
+        final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+        final int packetId = decodeMessageId(buffer);
+
+        final MqttMessageIdAndPropertiesVariableHeader mqttVariableHeader;
+        final int mqtt5Consumed;
+
+        if (mqttVersion == MqttVersion.MQTT_5) {
+            final Result<MqttProperties> properties = decodeProperties(buffer);
+            mqttVariableHeader = new MqttMessageIdAndPropertiesVariableHeader(packetId, properties.value);
+            mqtt5Consumed = properties.numberOfBytesConsumed;
+        } else {
+            mqttVariableHeader = new MqttMessageIdAndPropertiesVariableHeader(packetId,
+                    MqttProperties.NO_PROPERTIES);
+            mqtt5Consumed = 0;
+        }
+
+        return new Result<MqttMessageIdAndPropertiesVariableHeader>(mqttVariableHeader,
+                2 + mqtt5Consumed);
    }

-    private static Result<MqttPublishVariableHeader> decodePublishVariableHeader(
+    private Result<MqttPubReplyMessageVariableHeader> decodePubReplyMessage(ByteBuf buffer) {
+        final int packetId = decodeMessageId(buffer);
+
+        final MqttPubReplyMessageVariableHeader mqttPubAckVariableHeader;
+        final int consumed;
+        final int packetIdNumberOfBytesConsumed = 2;
+        if (bytesRemainingInVariablePart > 3) {
+            final byte reasonCode = buffer.readByte();
+            final Result<MqttProperties> properties = decodeProperties(buffer);
+            mqttPubAckVariableHeader = new MqttPubReplyMessageVariableHeader(packetId,
+                    reasonCode,
+                    properties.value);
+            consumed = packetIdNumberOfBytesConsumed + 1 + properties.numberOfBytesConsumed;
+        } else if (bytesRemainingInVariablePart > 2) {
+            final byte reasonCode = buffer.readByte();
+            mqttPubAckVariableHeader = new MqttPubReplyMessageVariableHeader(packetId,
+                    reasonCode,
+                    MqttProperties.NO_PROPERTIES);
+            consumed = packetIdNumberOfBytesConsumed + 1;
+        } else {
+            mqttPubAckVariableHeader = new MqttPubReplyMessageVariableHeader(packetId,
+                    (byte) 0,
+                    MqttProperties.NO_PROPERTIES);
+            consumed = packetIdNumberOfBytesConsumed;
+        }
+
+        return new Result<MqttPubReplyMessageVariableHeader>(mqttPubAckVariableHeader, consumed);
+    }
+
+    private Result<MqttReasonCodeAndPropertiesVariableHeader> decodeReasonCodeAndPropertiesVariableHeader(
+            ByteBuf buffer) {
+        final byte reasonCode;
+        final MqttProperties properties;
+        final int consumed;
+        if (bytesRemainingInVariablePart > 1) {
+            reasonCode = buffer.readByte();
+            final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
+            properties = propertiesResult.value;
+            consumed = 1 + propertiesResult.numberOfBytesConsumed;
+        } else if (bytesRemainingInVariablePart > 0) {
+            reasonCode = buffer.readByte();
+            properties = MqttProperties.NO_PROPERTIES;
+            consumed = 1;
+        } else {
+            reasonCode = 0;
+            properties = MqttProperties.NO_PROPERTIES;
+            consumed = 0;
+        }
+        final MqttReasonCodeAndPropertiesVariableHeader mqttReasonAndPropsVariableHeader =
+                new MqttReasonCodeAndPropertiesVariableHeader(reasonCode, properties);
+
+        return new Result<MqttReasonCodeAndPropertiesVariableHeader>(
+                mqttReasonAndPropsVariableHeader,
+                consumed);
+    }
+
+    private Result<MqttPublishVariableHeader> decodePublishVariableHeader(
+            ChannelHandlerContext ctx,
            ByteBuf buffer,
            MqttFixedHeader mqttFixedHeader) {
+        final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
        final Result<String> decodedTopic = decodeString(buffer);
-        if (!isValidPublishTopicName(decodedTopic.value)) {
+        if (!MqttCodecUtil.isValidPublishTopicName(decodedTopic.value)) {
            throw new DecoderException("invalid publish topic name: " + decodedTopic.value + " (contains wildcards)");
        }
        int numberOfBytesConsumed = decodedTopic.numberOfBytesConsumed;

        int messageId = -1;
        if (mqttFixedHeader.qosLevel().value() > 0) {
-            final Result<Integer> decodedMessageId = decodeMessageId(buffer);
-            messageId = decodedMessageId.value;
-            numberOfBytesConsumed += decodedMessageId.numberOfBytesConsumed;
+            messageId = decodeMessageId(buffer);
+            numberOfBytesConsumed += 2;
        }
+
+        final MqttProperties properties;
+        if (mqttVersion == MqttVersion.MQTT_5) {
+            final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
+            properties = propertiesResult.value;
+            numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
+        } else {
+            properties = MqttProperties.NO_PROPERTIES;
+        }
+
        final MqttPublishVariableHeader mqttPublishVariableHeader =
-                new MqttPublishVariableHeader(decodedTopic.value, messageId);
+                new MqttPublishVariableHeader(decodedTopic.value, messageId, properties);
        return new Result<MqttPublishVariableHeader>(mqttPublishVariableHeader, numberOfBytesConsumed);
    }

-    private static Result<Integer> decodeMessageId(ByteBuf buffer) {
-        final Result<Integer> messageId = decodeMsbLsb(buffer);
-        if (!isValidMessageId(messageId.value)) {
-            throw new DecoderException("invalid messageId: " + messageId.value);
+    /**
+     * @return messageId with numberOfBytesConsumed is 2
+     */
+    private static int decodeMessageId(ByteBuf buffer) {
+        final int messageId = decodeMsbLsb(buffer);
+        if (!MqttCodecUtil.isValidMessageId(messageId)) {
+            throw new DecoderException("invalid messageId: " + messageId);
        }
        return messageId;
    }
@@ -300,13 +485,15 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
     * @return the payload
     */
    private static Result<?> decodePayload(
+            ChannelHandlerContext ctx,
            ByteBuf buffer,
            MqttMessageType messageType,
            int bytesRemainingInVariablePart,
+            int maxClientIdLength,
            Object variableHeader) {
        switch (messageType) {
            case CONNECT:
-                return decodeConnectionPayload(buffer, (MqttConnectVariableHeader) variableHeader);
+                return decodeConnectionPayload(buffer, maxClientIdLength, (MqttConnectVariableHeader) variableHeader);

            case SUBSCRIBE:
                return decodeSubscribePayload(buffer, bytesRemainingInVariablePart);
@@ -317,6 +504,9 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
            case UNSUBSCRIBE:
                return decodeUnsubscribePayload(buffer, bytesRemainingInVariablePart);

+            case UNSUBACK:
+                return decodeUnsubAckPayload(ctx, buffer, bytesRemainingInVariablePart);
+
            case PUBLISH:
                return decodePublishPayload(buffer, bytesRemainingInVariablePart);

@@ -328,42 +518,55 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {

    private static Result<MqttConnectPayload> decodeConnectionPayload(
            ByteBuf buffer,
+            int maxClientIdLength,
            MqttConnectVariableHeader mqttConnectVariableHeader) {
        final Result<String> decodedClientId = decodeString(buffer);
        final String decodedClientIdValue = decodedClientId.value;
        final MqttVersion mqttVersion = MqttVersion.fromProtocolNameAndLevel(mqttConnectVariableHeader.name(),
                (byte) mqttConnectVariableHeader.version());
-        if (!isValidClientId(mqttVersion, decodedClientIdValue)) {
+        if (!MqttCodecUtil.isValidClientId(mqttVersion, maxClientIdLength, decodedClientIdValue)) {
            throw new MqttIdentifierRejectedException("invalid clientIdentifier: " + decodedClientIdValue);
        }
        int numberOfBytesConsumed = decodedClientId.numberOfBytesConsumed;

        Result<String> decodedWillTopic = null;
-        Result<String> decodedWillMessage = null;
+        byte[] decodedWillMessage = null;
+
+        final MqttProperties willProperties;
        if (mqttConnectVariableHeader.isWillFlag()) {
+            if (mqttVersion == MqttVersion.MQTT_5) {
+                final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
+                willProperties = propertiesResult.value;
+                numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
+            } else {
+                willProperties = MqttProperties.NO_PROPERTIES;
+            }
            decodedWillTopic = decodeString(buffer, 0, 32767);
            numberOfBytesConsumed += decodedWillTopic.numberOfBytesConsumed;
-            decodedWillMessage = decodeAsciiString(buffer);
-            numberOfBytesConsumed += decodedWillMessage.numberOfBytesConsumed;
+            decodedWillMessage = decodeByteArray(buffer);
+            numberOfBytesConsumed += decodedWillMessage.length + 2;
+        } else {
+            willProperties = MqttProperties.NO_PROPERTIES;
        }
        Result<String> decodedUserName = null;
-        Result<byte[]> decodedPassword = null;
+        byte[] decodedPassword = null;
        if (mqttConnectVariableHeader.hasUserName()) {
            decodedUserName = decodeString(buffer);
            numberOfBytesConsumed += decodedUserName.numberOfBytesConsumed;
        }
        if (mqttConnectVariableHeader.hasPassword()) {
-            decodedPassword = decodeByte(buffer);
-            numberOfBytesConsumed += decodedPassword.numberOfBytesConsumed;
+            decodedPassword = decodeByteArray(buffer);
+            numberOfBytesConsumed += decodedPassword.length + 2;
        }

        final MqttConnectPayload mqttConnectPayload =
                new MqttConnectPayload(
                        decodedClientId.value,
+                        willProperties,
                        decodedWillTopic != null ? decodedWillTopic.value : null,
-                        decodedWillMessage != null ? decodedWillMessage.value : null,
+                        decodedWillMessage,
                        decodedUserName != null ? decodedUserName.value : null,
-                        decodedPassword != null ? decodedPassword.value : null);
+                        decodedPassword);
        return new Result<MqttConnectPayload>(mqttConnectPayload, numberOfBytesConsumed);
    }

@@ -375,9 +578,21 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
        while (numberOfBytesConsumed < bytesRemainingInVariablePart) {
            final Result<String> decodedTopicName = decodeString(buffer);
            numberOfBytesConsumed += decodedTopicName.numberOfBytesConsumed;
-            int qos = buffer.readUnsignedByte() & 0x03;
+            //See 3.8.3.1 Subscription Options of MQTT 5.0 specification for optionByte details
+            final short optionByte = buffer.readUnsignedByte();
+
+            MqttQoS qos = MqttQoS.valueOf(optionByte & 0x03);
+            boolean noLocal = ((optionByte & 0x04) >> 2) == 1;
+            boolean retainAsPublished = ((optionByte & 0x08) >> 3) == 1;
+            MqttSubscriptionOption.RetainedHandlingPolicy retainHandling = MqttSubscriptionOption.RetainedHandlingPolicy.valueOf((optionByte & 0x30) >> 4);
+
+            final MqttSubscriptionOption subscriptionOption = new MqttSubscriptionOption(qos,
+                    noLocal,
+                    retainAsPublished,
+                    retainHandling);
+
            numberOfBytesConsumed++;
-            subscribeTopics.add(new MqttTopicSubscription(decodedTopicName.value, MqttQoS.valueOf(qos)));
+            subscribeTopics.add(new MqttTopicSubscription(decodedTopicName.value, subscriptionOption));
        }
        return new Result<MqttSubscribePayload>(new MqttSubscribePayload(subscribeTopics), numberOfBytesConsumed);
    }
@@ -385,16 +600,30 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
    private static Result<MqttSubAckPayload> decodeSubackPayload(
            ByteBuf buffer,
            int bytesRemainingInVariablePart) {
-        final List<Integer> grantedQos = new ArrayList<Integer>();
+        final List<Integer> grantedQos = new ArrayList<Integer>(bytesRemainingInVariablePart);
        int numberOfBytesConsumed = 0;
        while (numberOfBytesConsumed < bytesRemainingInVariablePart) {
-            int qos = buffer.readUnsignedByte() & 0x03;
+            int reasonCode = buffer.readUnsignedByte();
            numberOfBytesConsumed++;
-            grantedQos.add(qos);
+            grantedQos.add(reasonCode);
        }
        return new Result<MqttSubAckPayload>(new MqttSubAckPayload(grantedQos), numberOfBytesConsumed);
    }

+    private static Result<MqttUnsubAckPayload> decodeUnsubAckPayload(
+        ChannelHandlerContext ctx,
+        ByteBuf buffer,
+        int bytesRemainingInVariablePart) {
+        final List<Short> reasonCodes = new ArrayList<Short>(bytesRemainingInVariablePart);
+        int numberOfBytesConsumed = 0;
+        while (numberOfBytesConsumed < bytesRemainingInVariablePart) {
+            short reasonCode = buffer.readUnsignedByte();
+            numberOfBytesConsumed++;
+            reasonCodes.add(reasonCode);
+        }
+        return new Result<MqttUnsubAckPayload>(new MqttUnsubAckPayload(reasonCodes), numberOfBytesConsumed);
+    }
+
    private static Result<MqttUnsubscribePayload> decodeUnsubscribePayload(
            ByteBuf buffer,
            int bytesRemainingInVariablePart) {
@@ -419,25 +648,9 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
        return decodeString(buffer, 0, Integer.MAX_VALUE);
    }

-    private static Result<String> decodeAsciiString(ByteBuf buffer) {
-        Result<String> result = decodeString(buffer, 0, Integer.MAX_VALUE);
-        final String s = result.value;
-        for (int i = 0; i < s.length(); i++) {
-            if (s.charAt(i) > 127) {
-                return new Result<String>(null, result.numberOfBytesConsumed);
-            }
-        }
-        return new Result<String>(s, result.numberOfBytesConsumed);
-    }
-
-    private static Result<byte[]> decodeByte(ByteBuf buffer) {
-        return decodeByte(buffer, 0, Integer.MAX_VALUE);
-    }
-
    private static Result<String> decodeString(ByteBuf buffer, int minBytes, int maxBytes) {
-        final Result<Integer> decodedSize = decodeMsbLsb(buffer);
-        int size = decodedSize.value;
-        int numberOfBytesConsumed = decodedSize.numberOfBytesConsumed;
+        int size = decodeMsbLsb(buffer);
+        int numberOfBytesConsumed = 2;
        if (size < minBytes || size > maxBytes) {
            buffer.skipBytes(size);
            numberOfBytesConsumed += size;
@@ -449,35 +662,68 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
        return new Result<String>(s, numberOfBytesConsumed);
    }

-    private static Result<byte[]> decodeByte(ByteBuf buffer, int minBytes, int maxBytes) {
-        final Result<Integer> decodedSize = decodeMsbLsb(buffer);
-        int size = decodedSize.value;
-        int numberOfBytesConsumed = decodedSize.numberOfBytesConsumed;
-        if (size < minBytes || size > maxBytes) {
-            buffer.skipBytes(size);
-            numberOfBytesConsumed += size;
-            return new Result<>(null, numberOfBytesConsumed);
-        }
-        byte[] s = new byte[size];
-        buffer.getBytes(buffer.readerIndex(), s, 0, size);
-        buffer.skipBytes(size);
-        numberOfBytesConsumed += size;
-        return new Result<>(s, numberOfBytesConsumed);
+    /**
+     *
+     * @return the decoded byte[], numberOfBytesConsumed = byte[].length + 2
+     */
+    private static byte[] decodeByteArray(ByteBuf buffer) {
+        int size = decodeMsbLsb(buffer);
+        byte[] bytes = new byte[size];
+        buffer.readBytes(bytes);
+        return bytes;
    }

-    private static Result<Integer> decodeMsbLsb(ByteBuf buffer) {
-        return decodeMsbLsb(buffer, 0, 65535);
+    // packing utils to reduce the amount of garbage while decoding ints
+    private static long packInts(int a, int b) {
+        return (((long) a) << 32) | (b & 0xFFFFFFFFL);
    }

-    private static Result<Integer> decodeMsbLsb(ByteBuf buffer, int min, int max) {
+    private static int unpackA(long ints) {
+        return (int) (ints >> 32);
+    }
+
+    private static int unpackB(long ints) {
+        return (int) ints;
+    }
+
+    /**
+     *  numberOfBytesConsumed = 2. return decoded result.
+     */
+    private static int decodeMsbLsb(ByteBuf buffer) {
+        int min = 0;
+        int max = 65535;
        short msbSize = buffer.readUnsignedByte();
        short lsbSize = buffer.readUnsignedByte();
-        final int numberOfBytesConsumed = 2;
        int result = msbSize << 8 | lsbSize;
        if (result < min || result > max) {
            result = -1;
        }
-        return new Result<Integer>(result, numberOfBytesConsumed);
+        return result;
+    }
+
+    /**
+     * See 1.5.5 Variable Byte Integer section of MQTT 5.0 specification for encoding/decoding rules
+     *
+     * @param buffer the buffer to decode from
+     * @return result pack with a = decoded integer, b = numberOfBytesConsumed. Need to unpack to read them.
+     * @throws DecoderException if bad MQTT protocol limits Remaining Length
+     */
+    private static long decodeVariableByteInteger(ByteBuf buffer) {
+        int remainingLength = 0;
+        int multiplier = 1;
+        short digit;
+        int loops = 0;
+        do {
+            digit = buffer.readUnsignedByte();
+            remainingLength += (digit & 127) * multiplier;
+            multiplier *= 128;
+            loops++;
+        } while ((digit & 128) != 0 && loops < 4);
+
+        if (loops == 4 && (digit & 128) != 0) {
+            throw new DecoderException("MQTT protocol limits Remaining Length to 4 bytes");
+        }
+        return packInts(remainingLength, loops);
    }

    private static final class Result<T> {
@@ -490,4 +736,82 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
            this.numberOfBytesConsumed = numberOfBytesConsumed;
        }
    }
+
+    private static Result<MqttProperties> decodeProperties(ByteBuf buffer) {
+        final long propertiesLength = decodeVariableByteInteger(buffer);
+        int totalPropertiesLength = unpackA(propertiesLength);
+        int numberOfBytesConsumed = unpackB(propertiesLength);
+
+        MqttProperties decodedProperties = new MqttProperties();
+        while (numberOfBytesConsumed < totalPropertiesLength) {
+            long propertyId = decodeVariableByteInteger(buffer);
+            final int propertyIdValue = unpackA(propertyId);
+            numberOfBytesConsumed += unpackB(propertyId);
+            MqttProperties.MqttPropertyType propertyType = MqttProperties.MqttPropertyType.valueOf(propertyIdValue);
+            switch (propertyType) {
+                case PAYLOAD_FORMAT_INDICATOR:
+                case REQUEST_PROBLEM_INFORMATION:
+                case REQUEST_RESPONSE_INFORMATION:
+                case MAXIMUM_QOS:
+                case RETAIN_AVAILABLE:
+                case WILDCARD_SUBSCRIPTION_AVAILABLE:
+                case SUBSCRIPTION_IDENTIFIER_AVAILABLE:
+                case SHARED_SUBSCRIPTION_AVAILABLE:
+                    final int b1 = buffer.readUnsignedByte();
+                    numberOfBytesConsumed++;
+                    decodedProperties.add(new MqttProperties.IntegerProperty(propertyIdValue, b1));
+                    break;
+                case SERVER_KEEP_ALIVE:
+                case RECEIVE_MAXIMUM:
+                case TOPIC_ALIAS_MAXIMUM:
+                case TOPIC_ALIAS:
+                    final int int2BytesResult = decodeMsbLsb(buffer);
+                    numberOfBytesConsumed += 2;
+                    decodedProperties.add(new MqttProperties.IntegerProperty(propertyIdValue, int2BytesResult));
+                    break;
+                case PUBLICATION_EXPIRY_INTERVAL:
+                case SESSION_EXPIRY_INTERVAL:
+                case WILL_DELAY_INTERVAL:
+                case MAXIMUM_PACKET_SIZE:
+                    final int maxPacketSize = buffer.readInt();
+                    numberOfBytesConsumed += 4;
+                    decodedProperties.add(new MqttProperties.IntegerProperty(propertyIdValue, maxPacketSize));
+                    break;
+                case SUBSCRIPTION_IDENTIFIER:
+                    long vbIntegerResult = decodeVariableByteInteger(buffer);
+                    numberOfBytesConsumed += unpackB(vbIntegerResult);
+                    decodedProperties.add(new MqttProperties.IntegerProperty(propertyIdValue, unpackA(vbIntegerResult)));
+                    break;
+                case CONTENT_TYPE:
+                case RESPONSE_TOPIC:
+                case ASSIGNED_CLIENT_IDENTIFIER:
+                case AUTHENTICATION_METHOD:
+                case RESPONSE_INFORMATION:
+                case SERVER_REFERENCE:
+                case REASON_STRING:
+                    final Result<String> stringResult = decodeString(buffer);
+                    numberOfBytesConsumed += stringResult.numberOfBytesConsumed;
+                    decodedProperties.add(new MqttProperties.StringProperty(propertyIdValue, stringResult.value));
+                    break;
+                case USER_PROPERTY:
+                    final Result<String> keyResult = decodeString(buffer);
+                    final Result<String> valueResult = decodeString(buffer);
+                    numberOfBytesConsumed += keyResult.numberOfBytesConsumed;
+                    numberOfBytesConsumed += valueResult.numberOfBytesConsumed;
+                    decodedProperties.add(new MqttProperties.UserProperty(keyResult.value, valueResult.value));
+                    break;
+                case CORRELATION_DATA:
+                case AUTHENTICATION_DATA:
+                    final byte[] binaryDataResult = decodeByteArray(buffer);
+                    numberOfBytesConsumed += binaryDataResult.length + 2;
+                    decodedProperties.add(new MqttProperties.BinaryProperty(propertyIdValue, binaryDataResult));
+                    break;
+                default:
+                    //shouldn't reach here
+                    throw new DecoderException("Unknown property type: " + propertyType);
+            }
+        }
+
+        return new Result<MqttProperties>(decodedProperties, numberOfBytesConsumed);
+    }
 }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -18,19 +18,22 @@ package io.netty.handler.codec.mqtt;

 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufAllocator;
+import io.netty.buffer.Unpooled;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
+import io.netty.handler.codec.EncoderException;
 import io.netty.handler.codec.MessageToMessageEncoder;
-import io.netty.util.CharsetUtil;
 import io.netty.util.internal.EmptyArrays;

 import java.util.List;

-import static io.netty.handler.codec.mqtt.MqttCodecUtil.*;
+import static io.netty.buffer.ByteBufUtil.*;

 /**
 * Encodes Mqtt messages into bytes following the protocol specification v3.1
- * as described here <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html">MQTTV3.1</a>
+ * as described here <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html">MQTTV3.1</a>
+ * or v5.0 as described here <a href="https://docs.oasis-open.org/mqtt/mqtt/v5.0/mqtt-v5.0.html">MQTTv5.0</a> -
+ * depending on the version specified in the first CONNECT message that goes through the channel.
 */
@ChannelHandler.Sharable
 public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
@@ -41,49 +44,57 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {

    @Override
    protected void encode(ChannelHandlerContext ctx, MqttMessage msg, List<Object> out) throws Exception {
-        out.add(doEncode(ctx.alloc(), msg));
+        out.add(doEncode(ctx, msg));
    }

    /**
     * This is the main encoding method.
     * It's only visible for testing.
     *
-     * @param byteBufAllocator Allocates ByteBuf
     * @param message MQTT message to encode
     * @return ByteBuf with encoded bytes
     */
-    static ByteBuf doEncode(ByteBufAllocator byteBufAllocator, MqttMessage message) {
+    static ByteBuf doEncode(ChannelHandlerContext ctx,
+                     MqttMessage message) {

        switch (message.fixedHeader().messageType()) {
            case CONNECT:
-                return encodeConnectMessage(byteBufAllocator, (MqttConnectMessage) message);
+                return encodeConnectMessage(ctx, (MqttConnectMessage) message);

            case CONNACK:
-                return encodeConnAckMessage(byteBufAllocator, (MqttConnAckMessage) message);
+                return encodeConnAckMessage(ctx, (MqttConnAckMessage) message);

            case PUBLISH:
-                return encodePublishMessage(byteBufAllocator, (MqttPublishMessage) message);
+                return encodePublishMessage(ctx, (MqttPublishMessage) message);

            case SUBSCRIBE:
-                return encodeSubscribeMessage(byteBufAllocator, (MqttSubscribeMessage) message);
+                return encodeSubscribeMessage(ctx, (MqttSubscribeMessage) message);

            case UNSUBSCRIBE:
-                return encodeUnsubscribeMessage(byteBufAllocator, (MqttUnsubscribeMessage) message);
+                return encodeUnsubscribeMessage(ctx,  (MqttUnsubscribeMessage) message);

            case SUBACK:
-                return encodeSubAckMessage(byteBufAllocator, (MqttSubAckMessage) message);
+                return encodeSubAckMessage(ctx, (MqttSubAckMessage) message);

            case UNSUBACK:
+                if (message instanceof MqttUnsubAckMessage) {
+                    return encodeUnsubAckMessage(ctx, (MqttUnsubAckMessage) message);
+                }
+                return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(ctx.alloc(), message);
+
            case PUBACK:
            case PUBREC:
            case PUBREL:
            case PUBCOMP:
-                return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(byteBufAllocator, message);
+                return encodePubReplyMessage(ctx, message);
+
+            case DISCONNECT:
+            case AUTH:
+                return encodeReasonCodePlusPropertiesMessage(ctx, message);

            case PINGREQ:
            case PINGRESP:
-            case DISCONNECT:
-                return encodeMessageWithOnlySingleByteFixedHeader(byteBufAllocator, message);
+                return encodeMessageWithOnlySingleByteFixedHeader(ctx.alloc(), message);

            default:
                throw new IllegalArgumentException(
@@ -92,7 +103,7 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
    }

    private static ByteBuf encodeConnectMessage(
-            ByteBufAllocator byteBufAllocator,
+            ChannelHandlerContext ctx,
            MqttConnectMessage message) {
        int payloadBufferSize = 0;

@@ -101,70 +112,96 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
        MqttConnectPayload payload = message.payload();
        MqttVersion mqttVersion = MqttVersion.fromProtocolNameAndLevel(variableHeader.name(),
                (byte) variableHeader.version());
+        MqttCodecUtil.setMqttVersion(ctx, mqttVersion);
+
+        // as MQTT 3.1 & 3.1.1 spec, If the User Name Flag is set to 0, the Password Flag MUST be set to 0
+        if (!variableHeader.hasUserName() && variableHeader.hasPassword()) {
+            throw new EncoderException("Without a username, the password MUST be not set");
+        }

        // Client id
        String clientIdentifier = payload.clientIdentifier();
-        if (!isValidClientId(mqttVersion, clientIdentifier)) {
+        if (!MqttCodecUtil.isValidClientId(mqttVersion, MqttConstant.DEFAULT_MAX_CLIENT_ID_LENGTH, clientIdentifier)) {
            throw new MqttIdentifierRejectedException("invalid clientIdentifier: " + clientIdentifier);
        }
-        byte[] clientIdentifierBytes = encodeStringUtf8(clientIdentifier);
-        payloadBufferSize += 2 + clientIdentifierBytes.length;
+        int clientIdentifierBytes = utf8Bytes(clientIdentifier);
+        payloadBufferSize += 2 + clientIdentifierBytes;

        // Will topic and message
        String willTopic = payload.willTopic();
-        byte[] willTopicBytes = willTopic != null ? encodeStringUtf8(willTopic) : EmptyArrays.EMPTY_BYTES;
-        String willMessage = payload.willMessage();
-        byte[] willMessageBytes = willMessage != null ? encodeStringUtf8(willMessage) : EmptyArrays.EMPTY_BYTES;
+        int willTopicBytes = nullableUtf8Bytes(willTopic);
+        byte[] willMessage = payload.willMessageInBytes();
+        byte[] willMessageBytes = willMessage != null ? willMessage : EmptyArrays.EMPTY_BYTES;
        if (variableHeader.isWillFlag()) {
-            payloadBufferSize += 2 + willTopicBytes.length;
+            payloadBufferSize += 2 + willTopicBytes;
            payloadBufferSize += 2 + willMessageBytes.length;
        }

        String userName = payload.userName();
-        byte[] userNameBytes = userName != null ? encodeStringUtf8(userName) : EmptyArrays.EMPTY_BYTES;
+        int userNameBytes = nullableUtf8Bytes(userName);
        if (variableHeader.hasUserName()) {
-            payloadBufferSize += 2 + userNameBytes.length;
+            payloadBufferSize += 2 + userNameBytes;
        }

-        byte[] passwordBytes = payload.password();
+        byte[] password = payload.passwordInBytes();
+        byte[] passwordBytes = password != null ? password : EmptyArrays.EMPTY_BYTES;
        if (variableHeader.hasPassword()) {
            payloadBufferSize += 2 + passwordBytes.length;
        }

-        // Fixed header
+        // Fixed and variable header
        byte[] protocolNameBytes = mqttVersion.protocolNameBytes();
-        int variableHeaderBufferSize = 2 + protocolNameBytes.length + 4;
-        int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
-        int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
-        ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
-        buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
-        writeVariableLengthInt(buf, variablePartSize);
+        ByteBuf propertiesBuf = encodePropertiesIfNeeded(
+                mqttVersion,
+                ctx.alloc(),
+                message.variableHeader().properties());
+        try {
+            final ByteBuf willPropertiesBuf;
+            if (variableHeader.isWillFlag()) {
+                willPropertiesBuf = encodePropertiesIfNeeded(mqttVersion, ctx.alloc(), payload.willProperties());
+                payloadBufferSize += willPropertiesBuf.readableBytes();
+            } else {
+                willPropertiesBuf = Unpooled.EMPTY_BUFFER;
+            }
+            try {
+                int variableHeaderBufferSize = 2 + protocolNameBytes.length + 4 + propertiesBuf.readableBytes();

-        buf.writeShort(protocolNameBytes.length);
-        buf.writeBytes(protocolNameBytes);
+                int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
+                int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
+                ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
+                buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
+                writeVariableLengthInt(buf, variablePartSize);

-        buf.writeByte(variableHeader.version());
-        buf.writeByte(getConnVariableHeaderFlag(variableHeader));
-        buf.writeShort(variableHeader.keepAliveTimeSeconds());
+                buf.writeShort(protocolNameBytes.length);
+                buf.writeBytes(protocolNameBytes);

-        // Payload
-        buf.writeShort(clientIdentifierBytes.length);
-        buf.writeBytes(clientIdentifierBytes, 0, clientIdentifierBytes.length);
-        if (variableHeader.isWillFlag()) {
-            buf.writeShort(willTopicBytes.length);
-            buf.writeBytes(willTopicBytes, 0, willTopicBytes.length);
-            buf.writeShort(willMessageBytes.length);
-            buf.writeBytes(willMessageBytes, 0, willMessageBytes.length);
+                buf.writeByte(variableHeader.version());
+                buf.writeByte(getConnVariableHeaderFlag(variableHeader));
+                buf.writeShort(variableHeader.keepAliveTimeSeconds());
+                buf.writeBytes(propertiesBuf);
+
+                // Payload
+                writeExactUTF8String(buf, clientIdentifier, clientIdentifierBytes);
+                if (variableHeader.isWillFlag()) {
+                    buf.writeBytes(willPropertiesBuf);
+                    writeExactUTF8String(buf, willTopic, willTopicBytes);
+                    buf.writeShort(willMessageBytes.length);
+                    buf.writeBytes(willMessageBytes, 0, willMessageBytes.length);
+                }
+                if (variableHeader.hasUserName()) {
+                    writeExactUTF8String(buf, userName, userNameBytes);
+                }
+                if (variableHeader.hasPassword()) {
+                    buf.writeShort(passwordBytes.length);
+                    buf.writeBytes(passwordBytes, 0, passwordBytes.length);
+                }
+                return buf;
+            } finally {
+                willPropertiesBuf.release();
+            }
+        } finally {
+            propertiesBuf.release();
        }
-        if (variableHeader.hasUserName()) {
-            buf.writeShort(userNameBytes.length);
-            buf.writeBytes(userNameBytes, 0, userNameBytes.length);
-        }
-        if (variableHeader.hasPassword()) {
-            buf.writeShort(passwordBytes.length);
-            buf.writeBytes(passwordBytes, 0, passwordBytes.length);
-        }
-        return buf;
    }

    private static int getConnVariableHeaderFlag(MqttConnectVariableHeader variableHeader) {
@@ -189,149 +226,285 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
    }

    private static ByteBuf encodeConnAckMessage(
-            ByteBufAllocator byteBufAllocator,
+            ChannelHandlerContext ctx,
            MqttConnAckMessage message) {
-        int length = 4;
-        MqttConnectAckPayload payload = null;
-        if (message.payload() != null) {
-            payload = (MqttConnectAckPayload)message.payload();
-            if (payload.getData() != null && payload.getData().length > 0) {
-                length += payload.getData().length;
-            }
-        }
-        ByteBuf buf = byteBufAllocator.buffer(length);
-        buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
-        buf.writeByte(length - 2);
-        buf.writeByte(message.variableHeader().isSessionPresent() ? 0x01 : 0x00);
-        buf.writeByte(message.variableHeader().connectReturnCode().byteValue());
-        if (length > 4) {
-            buf.writeBytes(payload.getData());
-        }
+        final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+        ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
+                ctx.alloc(),
+                message.variableHeader().properties());

-        return buf;
+        try {
+            int length = 4;
+            MqttConnectAckPayload payload = null;
+            if (message.payload() != null) {
+                payload = (MqttConnectAckPayload)message.payload();
+                if (payload.getData() != null && payload.getData().length > 0) {
+                    length += payload.getData().length;
+                }
+            }
+            ByteBuf buf = ctx.alloc().buffer(length + propertiesBuf.readableBytes());
+            buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
+            writeVariableLengthInt(buf, length - 2 + propertiesBuf.readableBytes());
+            buf.writeByte(message.variableHeader().isSessionPresent() ? 0x01 : 0x00);
+            buf.writeByte(message.variableHeader().connectReturnCode().byteValue());
+            if (length > 4) {
+                buf.writeBytes(payload.getData());
+            }
+            buf.writeBytes(propertiesBuf);
+            return buf;
+        } finally {
+            propertiesBuf.release();
+        }
    }

    private static ByteBuf encodeSubscribeMessage(
-            ByteBufAllocator byteBufAllocator,
+            ChannelHandlerContext ctx,
            MqttSubscribeMessage message) {
-        int variableHeaderBufferSize = 2;
-        int payloadBufferSize = 0;
+        MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+        ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
+                ctx.alloc(),
+                message.idAndPropertiesVariableHeader().properties());

-        MqttFixedHeader mqttFixedHeader = message.fixedHeader();
-        MqttMessageIdVariableHeader variableHeader = message.variableHeader();
-        MqttSubscribePayload payload = message.payload();
+        try {
+            final int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
+            int payloadBufferSize = 0;

-        for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
-            String topicName = topic.topicName();
-            byte[] topicNameBytes = encodeStringUtf8(topicName);
-            payloadBufferSize += 2 + topicNameBytes.length;
-            payloadBufferSize += 1;
+            MqttFixedHeader mqttFixedHeader = message.fixedHeader();
+            MqttMessageIdVariableHeader variableHeader = message.variableHeader();
+            MqttSubscribePayload payload = message.payload();
+
+            for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
+                String topicName = topic.topicName();
+                int topicNameBytes = utf8Bytes(topicName);
+                payloadBufferSize += 2 + topicNameBytes;
+                payloadBufferSize += 1;
+            }
+
+            int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
+            int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
+
+            ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
+            buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
+            writeVariableLengthInt(buf, variablePartSize);
+
+            // Variable Header
+            int messageId = variableHeader.messageId();
+            buf.writeShort(messageId);
+            buf.writeBytes(propertiesBuf);
+
+            // Payload
+            for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
+                writeUnsafeUTF8String(buf, topic.topicName());
+                if (mqttVersion.protocolLevel() >= MqttVersion.MQTT_3_1_1.protocolLevel()) {
+                    buf.writeByte(topic.qualityOfService().value());
+                } else {
+                    final MqttSubscriptionOption option = topic.option();
+
+                    int optionEncoded = option.retainHandling().value() << 4;
+                    if (option.isRetainAsPublished()) {
+                        optionEncoded |= 0x08;
+                    }
+                    if (option.isNoLocal()) {
+                        optionEncoded |= 0x04;
+                    }
+                    optionEncoded |= option.qos().value();
+
+                    buf.writeByte(optionEncoded);
+                }
+            }
+
+            return buf;
+        } finally {
+            propertiesBuf.release();
        }
-
-        int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
-        int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
-
-        ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
-        buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
-        writeVariableLengthInt(buf, variablePartSize);
-
-        // Variable Header
-        int messageId = variableHeader.messageId();
-        buf.writeShort(messageId);
-
-        // Payload
-        for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
-            String topicName = topic.topicName();
-            byte[] topicNameBytes = encodeStringUtf8(topicName);
-            buf.writeShort(topicNameBytes.length);
-            buf.writeBytes(topicNameBytes, 0, topicNameBytes.length);
-            buf.writeByte(topic.qualityOfService().value());
-        }
-
-        return buf;
    }

    private static ByteBuf encodeUnsubscribeMessage(
-            ByteBufAllocator byteBufAllocator,
+            ChannelHandlerContext ctx,
            MqttUnsubscribeMessage message) {
-        int variableHeaderBufferSize = 2;
-        int payloadBufferSize = 0;
+        MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+        ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
+                ctx.alloc(),
+                message.idAndPropertiesVariableHeader().properties());

-        MqttFixedHeader mqttFixedHeader = message.fixedHeader();
-        MqttMessageIdVariableHeader variableHeader = message.variableHeader();
-        MqttUnsubscribePayload payload = message.payload();
+        try {
+            final int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
+            int payloadBufferSize = 0;

-        for (String topicName : payload.topics()) {
-            byte[] topicNameBytes = encodeStringUtf8(topicName);
-            payloadBufferSize += 2 + topicNameBytes.length;
+            MqttFixedHeader mqttFixedHeader = message.fixedHeader();
+            MqttMessageIdVariableHeader variableHeader = message.variableHeader();
+            MqttUnsubscribePayload payload = message.payload();
+
+            for (String topicName : payload.topics()) {
+                int topicNameBytes = utf8Bytes(topicName);
+                payloadBufferSize += 2 + topicNameBytes;
+            }
+
+            int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
+            int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
+
+            ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
+            buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
+            writeVariableLengthInt(buf, variablePartSize);
+
+            // Variable Header
+            int messageId = variableHeader.messageId();
+            buf.writeShort(messageId);
+            buf.writeBytes(propertiesBuf);
+
+            // Payload
+            for (String topicName : payload.topics()) {
+                writeUnsafeUTF8String(buf, topicName);
+            }
+
+            return buf;
+        } finally {
+            propertiesBuf.release();
        }
-
-        int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
-        int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
-
-        ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
-        buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
-        writeVariableLengthInt(buf, variablePartSize);
-
-        // Variable Header
-        int messageId = variableHeader.messageId();
-        buf.writeShort(messageId);
-
-        // Payload
-        for (String topicName : payload.topics()) {
-            byte[] topicNameBytes = encodeStringUtf8(topicName);
-            buf.writeShort(topicNameBytes.length);
-            buf.writeBytes(topicNameBytes, 0, topicNameBytes.length);
-        }
-
-        return buf;
    }

    private static ByteBuf encodeSubAckMessage(
-            ByteBufAllocator byteBufAllocator,
+            ChannelHandlerContext ctx,
            MqttSubAckMessage message) {
-        int variableHeaderBufferSize = 2;
-        int payloadBufferSize = message.payload().grantedQoSLevels().size();
-        int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
-        int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
-        ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
-        buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
-        writeVariableLengthInt(buf, variablePartSize);
-        buf.writeShort(message.variableHeader().messageId());
-        for (int qos : message.payload().grantedQoSLevels()) {
-            buf.writeByte(qos);
-        }
+        MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+        ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
+                ctx.alloc(),
+                message.idAndPropertiesVariableHeader().properties());
+        try {
+            int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
+            int payloadBufferSize = message.payload().grantedQoSLevels().size();
+            int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
+            int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
+            ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
+            buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
+            writeVariableLengthInt(buf, variablePartSize);
+            buf.writeShort(message.variableHeader().messageId());
+            buf.writeBytes(propertiesBuf);
+            for (int code: message.payload().reasonCodes()) {
+                buf.writeByte(code);
+            }

-        return buf;
+            return buf;
+        } finally {
+            propertiesBuf.release();
+        }
+    }
+
+    private static ByteBuf encodeUnsubAckMessage(
+            ChannelHandlerContext ctx,
+            MqttUnsubAckMessage message) {
+        if (message.variableHeader() instanceof  MqttMessageIdAndPropertiesVariableHeader) {
+            MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+            ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
+                    ctx.alloc(),
+                    message.idAndPropertiesVariableHeader().properties());
+            try {
+                int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
+                MqttUnsubAckPayload payload = message.payload();
+                int payloadBufferSize = payload == null ? 0 : payload.unsubscribeReasonCodes().size();
+                int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
+                int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
+                ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
+                buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
+                writeVariableLengthInt(buf, variablePartSize);
+                buf.writeShort(message.variableHeader().messageId());
+                buf.writeBytes(propertiesBuf);
+
+                if (payload != null) {
+                    for (Short reasonCode : payload.unsubscribeReasonCodes()) {
+                        buf.writeByte(reasonCode);
+                    }
+                }
+
+                return buf;
+            } finally {
+                propertiesBuf.release();
+            }
+        } else {
+            return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(ctx.alloc(), message);
+        }
    }

    private static ByteBuf encodePublishMessage(
-            ByteBufAllocator byteBufAllocator,
+            ChannelHandlerContext ctx,
            MqttPublishMessage message) {
+        MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
        MqttFixedHeader mqttFixedHeader = message.fixedHeader();
        MqttPublishVariableHeader variableHeader = message.variableHeader();
        ByteBuf payload = message.payload().duplicate();

        String topicName = variableHeader.topicName();
-        byte[] topicNameBytes = encodeStringUtf8(topicName);
+        int topicNameBytes = utf8Bytes(topicName);

-        int variableHeaderBufferSize = 2 + topicNameBytes.length +
-                (mqttFixedHeader.qosLevel().value() > 0 ? 2 : 0);
-        int payloadBufferSize = payload.readableBytes();
-        int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
-        int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
+        ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
+                ctx.alloc(),
+                message.variableHeader().properties());

-        ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
-        buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
-        writeVariableLengthInt(buf, variablePartSize);
-        buf.writeShort(topicNameBytes.length);
-        buf.writeBytes(topicNameBytes);
-        if (mqttFixedHeader.qosLevel().value() > 0) {
-            buf.writeShort(variableHeader.messageId());
+        try {
+            int variableHeaderBufferSize = 2 + topicNameBytes +
+                    (mqttFixedHeader.qosLevel().value() > 0 ? 2 : 0) + propertiesBuf.readableBytes();
+            int payloadBufferSize = payload.readableBytes();
+            int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
+            int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
+
+            ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
+            buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
+            writeVariableLengthInt(buf, variablePartSize);
+            writeExactUTF8String(buf, topicName, topicNameBytes);
+            if (mqttFixedHeader.qosLevel().value() > 0) {
+                buf.writeShort(variableHeader.packetId());
+            }
+            buf.writeBytes(propertiesBuf);
+            buf.writeBytes(payload);
+
+            return buf;
+        } finally {
+            propertiesBuf.release();
        }
-        buf.writeBytes(payload);
+    }

-        return buf;
+    private static ByteBuf encodePubReplyMessage(ChannelHandlerContext ctx,
+                                          MqttMessage message) {
+        if (message.variableHeader() instanceof MqttPubReplyMessageVariableHeader) {
+            MqttFixedHeader mqttFixedHeader = message.fixedHeader();
+            MqttPubReplyMessageVariableHeader variableHeader =
+                    (MqttPubReplyMessageVariableHeader) message.variableHeader();
+            int msgId = variableHeader.messageId();
+
+            final ByteBuf propertiesBuf;
+            final boolean includeReasonCode;
+            final int variableHeaderBufferSize;
+            final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+            if (mqttVersion == MqttVersion.MQTT_5 &&
+                    (variableHeader.reasonCode() != MqttPubReplyMessageVariableHeader.REASON_CODE_OK ||
+                            !variableHeader.properties().isEmpty())) {
+                propertiesBuf = encodeProperties(ctx.alloc(), variableHeader.properties());
+                includeReasonCode = true;
+                variableHeaderBufferSize = 3 + propertiesBuf.readableBytes();
+            } else {
+                propertiesBuf = Unpooled.EMPTY_BUFFER;
+                includeReasonCode = false;
+                variableHeaderBufferSize = 2;
+            }
+
+            try {
+                final int fixedHeaderBufferSize = 1 + getVariableLengthInt(variableHeaderBufferSize);
+                ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variableHeaderBufferSize);
+                buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
+                writeVariableLengthInt(buf, variableHeaderBufferSize);
+                buf.writeShort(msgId);
+                if (includeReasonCode) {
+                    buf.writeByte(variableHeader.reasonCode());
+                }
+                buf.writeBytes(propertiesBuf);
+
+                return buf;
+            } finally {
+                propertiesBuf.release();
+            }
+        } else {
+            return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(ctx.alloc(), message);
+        }
    }

    private static ByteBuf encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(
@@ -342,12 +515,11 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
        int msgId = variableHeader.messageId();

        int variableHeaderBufferSize = 2; // variable part only has a message id
-        
        ByteBuf payload = null;
        if (message.payload() != null) {
        	payload = ((ByteBuf)message.payload()).duplicate();
        	variableHeaderBufferSize += payload.readableBytes();
-		}
+		    }
        int fixedHeaderBufferSize = 1 + getVariableLengthInt(variableHeaderBufferSize);
        ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variableHeaderBufferSize);
        buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
@@ -355,11 +527,53 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
        buf.writeShort(msgId);
        if (payload != null) {
        	buf.writeBytes(payload);
-		}
-
+		    }
        return buf;
    }

+    private static ByteBuf encodeReasonCodePlusPropertiesMessage(
+            ChannelHandlerContext ctx,
+            MqttMessage message) {
+        if (message.variableHeader() instanceof MqttReasonCodeAndPropertiesVariableHeader) {
+            MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
+            MqttFixedHeader mqttFixedHeader = message.fixedHeader();
+            MqttReasonCodeAndPropertiesVariableHeader variableHeader =
+                    (MqttReasonCodeAndPropertiesVariableHeader) message.variableHeader();
+
+            final ByteBuf propertiesBuf;
+            final boolean includeReasonCode;
+            final int variableHeaderBufferSize;
+            if (mqttVersion == MqttVersion.MQTT_5 &&
+                    (variableHeader.reasonCode() != MqttReasonCodeAndPropertiesVariableHeader.REASON_CODE_OK ||
+                            !variableHeader.properties().isEmpty())) {
+                propertiesBuf = encodeProperties(ctx.alloc(), variableHeader.properties());
+                includeReasonCode = true;
+                variableHeaderBufferSize = 1 + propertiesBuf.readableBytes();
+            } else {
+                propertiesBuf = Unpooled.EMPTY_BUFFER;
+                includeReasonCode = false;
+                variableHeaderBufferSize = 0;
+            }
+
+            try {
+                final int fixedHeaderBufferSize = 1 + getVariableLengthInt(variableHeaderBufferSize);
+                ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variableHeaderBufferSize);
+                buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
+                writeVariableLengthInt(buf, variableHeaderBufferSize);
+                if (includeReasonCode) {
+                    buf.writeByte(variableHeader.reasonCode());
+                }
+                buf.writeBytes(propertiesBuf);
+
+                return buf;
+            } finally {
+                propertiesBuf.release();
+            }
+        } else {
+            return encodeMessageWithOnlySingleByteFixedHeader(ctx.alloc(), message);
+        }
+    }
+
    private static ByteBuf encodeMessageWithOnlySingleByteFixedHeader(
            ByteBufAllocator byteBufAllocator,
            MqttMessage message) {
@@ -371,6 +585,104 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
        return buf;
    }

+    private static ByteBuf encodePropertiesIfNeeded(MqttVersion mqttVersion,
+                                             ByteBufAllocator byteBufAllocator,
+                                             MqttProperties mqttProperties) {
+        if (mqttVersion == MqttVersion.MQTT_5) {
+            return encodeProperties(byteBufAllocator, mqttProperties);
+        }
+        return Unpooled.EMPTY_BUFFER;
+    }
+
+    private static ByteBuf encodeProperties(ByteBufAllocator byteBufAllocator,
+                                            MqttProperties mqttProperties) {
+        ByteBuf propertiesHeaderBuf = byteBufAllocator.buffer();
+        // encode also the Properties part
+        try {
+            ByteBuf propertiesBuf = byteBufAllocator.buffer();
+            try {
+                for (MqttProperties.MqttProperty property : mqttProperties.listAll()) {
+                    MqttProperties.MqttPropertyType propertyType =
+                            MqttProperties.MqttPropertyType.valueOf(property.propertyId);
+                    switch (propertyType) {
+                        case PAYLOAD_FORMAT_INDICATOR:
+                        case REQUEST_PROBLEM_INFORMATION:
+                        case REQUEST_RESPONSE_INFORMATION:
+                        case MAXIMUM_QOS:
+                        case RETAIN_AVAILABLE:
+                        case WILDCARD_SUBSCRIPTION_AVAILABLE:
+                        case SUBSCRIPTION_IDENTIFIER_AVAILABLE:
+                        case SHARED_SUBSCRIPTION_AVAILABLE:
+                            writeVariableLengthInt(propertiesBuf, property.propertyId);
+                            final byte bytePropValue = ((MqttProperties.IntegerProperty) property).value.byteValue();
+                            propertiesBuf.writeByte(bytePropValue);
+                            break;
+                        case SERVER_KEEP_ALIVE:
+                        case RECEIVE_MAXIMUM:
+                        case TOPIC_ALIAS_MAXIMUM:
+                        case TOPIC_ALIAS:
+                            writeVariableLengthInt(propertiesBuf, property.propertyId);
+                            final short twoBytesInPropValue =
+                                    ((MqttProperties.IntegerProperty) property).value.shortValue();
+                            propertiesBuf.writeShort(twoBytesInPropValue);
+                            break;
+                        case PUBLICATION_EXPIRY_INTERVAL:
+                        case SESSION_EXPIRY_INTERVAL:
+                        case WILL_DELAY_INTERVAL:
+                        case MAXIMUM_PACKET_SIZE:
+                            writeVariableLengthInt(propertiesBuf, property.propertyId);
+                            final int fourBytesIntPropValue = ((MqttProperties.IntegerProperty) property).value;
+                            propertiesBuf.writeInt(fourBytesIntPropValue);
+                            break;
+                        case SUBSCRIPTION_IDENTIFIER:
+                            writeVariableLengthInt(propertiesBuf, property.propertyId);
+                            final int vbi = ((MqttProperties.IntegerProperty) property).value;
+                            writeVariableLengthInt(propertiesBuf, vbi);
+                            break;
+                        case CONTENT_TYPE:
+                        case RESPONSE_TOPIC:
+                        case ASSIGNED_CLIENT_IDENTIFIER:
+                        case AUTHENTICATION_METHOD:
+                        case RESPONSE_INFORMATION:
+                        case SERVER_REFERENCE:
+                        case REASON_STRING:
+                            writeVariableLengthInt(propertiesBuf, property.propertyId);
+                            writeEagerUTF8String(propertiesBuf, ((MqttProperties.StringProperty) property).value);
+                            break;
+                        case USER_PROPERTY:
+                            final List<MqttProperties.StringPair> pairs =
+                                    ((MqttProperties.UserProperties) property).value;
+                            for (MqttProperties.StringPair pair : pairs) {
+                                writeVariableLengthInt(propertiesBuf, property.propertyId);
+                                writeEagerUTF8String(propertiesBuf, pair.key);
+                                writeEagerUTF8String(propertiesBuf, pair.value);
+                            }
+                            break;
+                        case CORRELATION_DATA:
+                        case AUTHENTICATION_DATA:
+                            writeVariableLengthInt(propertiesBuf, property.propertyId);
+                            final byte[] binaryPropValue = ((MqttProperties.BinaryProperty) property).value;
+                            propertiesBuf.writeShort(binaryPropValue.length);
+                            propertiesBuf.writeBytes(binaryPropValue, 0, binaryPropValue.length);
+                            break;
+                        default:
+                            //shouldn't reach here
+                            throw new EncoderException("Unknown property type: " + propertyType);
+                    }
+                }
+                writeVariableLengthInt(propertiesHeaderBuf, propertiesBuf.readableBytes());
+                propertiesHeaderBuf.writeBytes(propertiesBuf);
+
+                return propertiesHeaderBuf;
+            } finally {
+                propertiesBuf.release();
+            }
+        } catch (RuntimeException e) {
+            propertiesHeaderBuf.release();
+            throw e;
+        }
+    }
+
    private static int getFixedHeaderByte1(MqttFixedHeader header) {
        int ret = 0;
        ret |= header.messageType().value() << 4;
@@ -395,6 +707,42 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
        } while (num > 0);
    }

+    private static int nullableUtf8Bytes(String s) {
+        return s == null? 0 : utf8Bytes(s);
+    }
+
+    private static int nullableMaxUtf8Bytes(String s) {
+        return s == null? 0 : utf8MaxBytes(s);
+    }
+
+    private static void writeExactUTF8String(ByteBuf buf, String s, int utf8Length) {
+        buf.ensureWritable(utf8Length + 2);
+        buf.writeShort(utf8Length);
+        if (utf8Length > 0) {
+            final int writtenUtf8Length = reserveAndWriteUtf8(buf, s, utf8Length);
+            assert writtenUtf8Length == utf8Length;
+        }
+    }
+
+    private static void writeEagerUTF8String(ByteBuf buf, String s) {
+        final int maxUtf8Length = nullableMaxUtf8Bytes(s);
+        buf.ensureWritable(maxUtf8Length + 2);
+        final int writerIndex = buf.writerIndex();
+        final int startUtf8String = writerIndex + 2;
+        buf.writerIndex(startUtf8String);
+        final int utf8Length = s != null? reserveAndWriteUtf8(buf, s, maxUtf8Length) : 0;
+        buf.setShort(writerIndex, utf8Length);
+    }
+
+    private static void writeUnsafeUTF8String(ByteBuf buf, String s) {
+        final int writerIndex = buf.writerIndex();
+        final int startUtf8String = writerIndex + 2;
+        // no need to reserve any capacity here, already done earlier: that's why is Unsafe
+        buf.writerIndex(startUtf8String);
+        final int utf8Length = s != null? reserveAndWriteUtf8(buf, s, 0) : 0;
+        buf.setShort(writerIndex, utf8Length);
+    }
+
    private static int getVariableLengthInt(int num) {
        int count = 0;
        do {
@@ -404,7 +752,4 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
        return count;
    }

-    private static byte[] encodeStringUtf8(String s) {
-      return s.getBytes(CharsetUtil.UTF_8);
-    }
 }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -20,7 +20,7 @@ import io.netty.util.internal.ObjectUtil;
 import io.netty.util.internal.StringUtil;

 /**
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#fixed-header">
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#fixed-header">
 *     MQTTV3.1/fixed-header</a>
 */
 public final class MqttFixedHeader {
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -29,6 +29,17 @@ public class MqttMessage {
    private final Object payload;
    private final DecoderResult decoderResult;

+    // Constants for fixed-header only message types with all flags set to 0 (see
+    // https://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Table_2.2_-)
+    public static final MqttMessage PINGREQ = new MqttMessage(new MqttFixedHeader(MqttMessageType.PINGREQ, false,
+            MqttQoS.AT_MOST_ONCE, false, 0));
+
+    public static final MqttMessage PINGRESP = new MqttMessage(new MqttFixedHeader(MqttMessageType.PINGRESP, false,
+            MqttQoS.AT_MOST_ONCE, false, 0));
+
+    public static final MqttMessage DISCONNECT = new MqttMessage(new MqttFixedHeader(MqttMessageType.DISCONNECT, false,
+            MqttQoS.AT_MOST_ONCE, false, 0));
+
    public MqttMessage(MqttFixedHeader mqttFixedHeader) {
        this(mqttFixedHeader, null, null);
    }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -15,10 +15,14 @@
 */
 package io.netty.handler.codec.mqtt;

+import static io.netty.util.internal.ObjectUtil.checkPositive;
+
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
+import io.netty.util.CharsetUtil;

 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;

 public final class MqttMessageBuilders {
@@ -29,6 +33,7 @@ public final class MqttMessageBuilders {
        private MqttQoS qos;
        private ByteBuf payload;
        private int messageId;
+        private MqttProperties mqttProperties;

        PublishBuilder() {
        }
@@ -58,9 +63,15 @@ public final class MqttMessageBuilders {
            return this;
        }

+        public PublishBuilder properties(MqttProperties properties) {
+            this.mqttProperties = properties;
+            return this;
+        }
+
        public MqttPublishMessage build() {
            MqttFixedHeader mqttFixedHeader = new MqttFixedHeader(MqttMessageType.PUBLISH, false, qos, retained, 0);
-            MqttPublishVariableHeader mqttVariableHeader = new MqttPublishVariableHeader(topic, messageId);
+            MqttPublishVariableHeader mqttVariableHeader =
+                    new MqttPublishVariableHeader(topic, messageId, mqttProperties);
            return new MqttPublishMessage(mqttFixedHeader, mqttVariableHeader, Unpooled.buffer().writeBytes(payload));
        }
    }
@@ -73,13 +84,15 @@ public final class MqttMessageBuilders {
        private boolean hasUser;
        private boolean hasPassword;
        private int keepAliveSecs;
+        private MqttProperties willProperties = MqttProperties.NO_PROPERTIES;
        private boolean willFlag;
        private boolean willRetain;
        private MqttQoS willQos = MqttQoS.AT_MOST_ONCE;
        private String willTopic;
-        private String willMessage;
+        private byte[] willMessage;
        private String username;
        private byte[] password;
+        private MqttProperties properties = MqttProperties.NO_PROPERTIES;

        ConnectBuilder() {
        }
@@ -119,7 +132,16 @@ public final class MqttMessageBuilders {
            return this;
        }

+        /**
+         * @deprecated use {@link ConnectBuilder#willMessage(byte[])} instead
+         */
+        @Deprecated
        public ConnectBuilder willMessage(String willMessage) {
+            willMessage(willMessage == null ? null : willMessage.getBytes(CharsetUtil.UTF_8));
+            return this;
+        }
+
+        public ConnectBuilder willMessage(byte[] willMessage) {
            this.willMessage = willMessage;
            return this;
        }
@@ -129,6 +151,11 @@ public final class MqttMessageBuilders {
            return this;
        }

+        public ConnectBuilder willProperties(MqttProperties willProperties) {
+            this.willProperties = willProperties;
+            return this;
+        }
+
        public ConnectBuilder hasUser(boolean value) {
            this.hasUser = value;
            return this;
@@ -140,17 +167,31 @@ public final class MqttMessageBuilders {
        }

        public ConnectBuilder username(String username) {
-            this.hasUser = true;
+            this.hasUser = username != null;
            this.username = username;
            return this;
        }

+        /**
+         * @deprecated use {@link ConnectBuilder#password(byte[])} instead
+         */
+        @Deprecated
+        public ConnectBuilder password(String password) {
+            password(password == null ? null : password.getBytes(CharsetUtil.UTF_8));
+            return this;
+        }
+
        public ConnectBuilder password(byte[] password) {
-            this.hasPassword = true;
+            this.hasPassword = password != null;
            this.password = password;
            return this;
        }

+        public ConnectBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
        public MqttConnectMessage build() {
            MqttFixedHeader mqttFixedHeader =
                    new MqttFixedHeader(MqttMessageType.CONNECT, false, MqttQoS.AT_MOST_ONCE, false, 0);
@@ -164,9 +205,10 @@ public final class MqttMessageBuilders {
                            willQos.value(),
                            willFlag,
                            cleanSession,
-                            keepAliveSecs);
+                            keepAliveSecs,
+                            properties);
            MqttConnectPayload mqttConnectPayload =
-                    new MqttConnectPayload(clientId, willTopic, willMessage, username, password);
+                    new MqttConnectPayload(clientId, willProperties, willTopic, willMessage, username, password);
            return new MqttConnectMessage(mqttFixedHeader, mqttConnectVariableHeader, mqttConnectPayload);
        }
    }
@@ -175,36 +217,54 @@ public final class MqttMessageBuilders {

        private List<MqttTopicSubscription> subscriptions;
        private int messageId;
+        private MqttProperties properties;

        SubscribeBuilder() {
        }

        public SubscribeBuilder addSubscription(MqttQoS qos, String topic) {
-            if (subscriptions == null) {
-                subscriptions = new ArrayList<MqttTopicSubscription>(5);
-            }
+            ensureSubscriptionsExist();
            subscriptions.add(new MqttTopicSubscription(topic, qos));
            return this;
        }

+        public SubscribeBuilder addSubscription(String topic, MqttSubscriptionOption option) {
+            ensureSubscriptionsExist();
+            subscriptions.add(new MqttTopicSubscription(topic, option));
+            return this;
+        }
+
        public SubscribeBuilder messageId(int messageId) {
            this.messageId = messageId;
            return this;
        }

+        public SubscribeBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
        public MqttSubscribeMessage build() {
            MqttFixedHeader mqttFixedHeader =
                    new MqttFixedHeader(MqttMessageType.SUBSCRIBE, false, MqttQoS.AT_LEAST_ONCE, false, 0);
-            MqttMessageIdVariableHeader mqttVariableHeader = MqttMessageIdVariableHeader.from(messageId);
+            MqttMessageIdAndPropertiesVariableHeader mqttVariableHeader =
+                    new MqttMessageIdAndPropertiesVariableHeader(messageId, properties);
            MqttSubscribePayload mqttSubscribePayload = new MqttSubscribePayload(subscriptions);
            return new MqttSubscribeMessage(mqttFixedHeader, mqttVariableHeader, mqttSubscribePayload);
        }
+
+        private void ensureSubscriptionsExist() {
+            if (subscriptions == null) {
+                subscriptions = new ArrayList<MqttTopicSubscription>(5);
+            }
+        }
    }

    public static final class UnsubscribeBuilder {

        private List<String> topicFilters;
        private int messageId;
+        private MqttProperties properties;

        UnsubscribeBuilder() {
        }
@@ -222,21 +282,33 @@ public final class MqttMessageBuilders {
            return this;
        }

+        public UnsubscribeBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
        public MqttUnsubscribeMessage build() {
            MqttFixedHeader mqttFixedHeader =
                    new MqttFixedHeader(MqttMessageType.UNSUBSCRIBE, false, MqttQoS.AT_LEAST_ONCE, false, 0);
-            MqttMessageIdVariableHeader mqttVariableHeader = MqttMessageIdVariableHeader.from(messageId);
+            MqttMessageIdAndPropertiesVariableHeader mqttVariableHeader =
+                    new MqttMessageIdAndPropertiesVariableHeader(messageId, properties);
            MqttUnsubscribePayload mqttSubscribePayload = new MqttUnsubscribePayload(topicFilters);
            return new MqttUnsubscribeMessage(mqttFixedHeader, mqttVariableHeader, mqttSubscribePayload);
        }
    }

+    public interface PropertiesInitializer<T> {
+        void apply(T builder);
+    }
+
    public static final class ConnAckBuilder {

        private MqttConnectReturnCode returnCode;
        private boolean sessionPresent;
+        private MqttProperties properties = MqttProperties.NO_PROPERTIES;
+        private ConnAckPropertiesBuilder propsBuilder;

-        ConnAckBuilder() {
+        private ConnAckBuilder() {
        }

        public ConnAckBuilder returnCode(MqttConnectReturnCode returnCode) {
@@ -249,15 +321,402 @@ public final class MqttMessageBuilders {
            return this;
        }

+        public ConnAckBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
+        public ConnAckBuilder properties(PropertiesInitializer<ConnAckPropertiesBuilder> consumer) {
+            if (propsBuilder == null) {
+                propsBuilder = new ConnAckPropertiesBuilder();
+            }
+            consumer.apply(propsBuilder);
+            return this;
+        }
+
        public MqttConnAckMessage build() {
+            if (propsBuilder != null) {
+                properties = propsBuilder.build();
+            }
            MqttFixedHeader mqttFixedHeader =
                    new MqttFixedHeader(MqttMessageType.CONNACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
            MqttConnAckVariableHeader mqttConnAckVariableHeader =
-                    new MqttConnAckVariableHeader(returnCode, sessionPresent);
+                    new MqttConnAckVariableHeader(returnCode, sessionPresent, properties);
            return new MqttConnAckMessage(mqttFixedHeader, mqttConnAckVariableHeader);
        }
    }

+    public static final class ConnAckPropertiesBuilder {
+        private String clientId;
+        private Long sessionExpiryInterval;
+        private int receiveMaximum;
+        private Byte maximumQos;
+        private boolean retain;
+        private Long maximumPacketSize;
+        private int topicAliasMaximum;
+        private String reasonString;
+        private final MqttProperties.UserProperties userProperties = new MqttProperties.UserProperties();
+        private Boolean wildcardSubscriptionAvailable;
+        private Boolean subscriptionIdentifiersAvailable;
+        private Boolean sharedSubscriptionAvailable;
+        private Integer serverKeepAlive;
+        private String responseInformation;
+        private String serverReference;
+        private String authenticationMethod;
+        private byte[] authenticationData;
+
+        public MqttProperties build() {
+            final MqttProperties props = new MqttProperties();
+            if (clientId != null) {
+                props.add(new MqttProperties.StringProperty(MqttProperties.MqttPropertyType.ASSIGNED_CLIENT_IDENTIFIER.value(),
+                        clientId));
+            }
+            if (sessionExpiryInterval != null) {
+                props.add(new MqttProperties.IntegerProperty(
+                        MqttProperties.MqttPropertyType.SESSION_EXPIRY_INTERVAL.value(), sessionExpiryInterval.intValue()));
+            }
+            if (receiveMaximum > 0) {
+                props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.RECEIVE_MAXIMUM.value(), receiveMaximum));
+            }
+            if (maximumQos != null) {
+                props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.MAXIMUM_QOS.value(), receiveMaximum));
+            }
+            props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.RETAIN_AVAILABLE.value(), retain ? 1 : 0));
+            if (maximumPacketSize != null) {
+                props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.MAXIMUM_PACKET_SIZE.value(),
+                        maximumPacketSize.intValue()));
+            }
+            props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.TOPIC_ALIAS_MAXIMUM.value(),
+                    topicAliasMaximum));
+            if (reasonString != null) {
+                props.add(new MqttProperties.StringProperty(MqttProperties.MqttPropertyType.REASON_STRING.value(), reasonString));
+            }
+            props.add(userProperties);
+            if (wildcardSubscriptionAvailable != null) {
+                props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.WILDCARD_SUBSCRIPTION_AVAILABLE.value(),
+                        wildcardSubscriptionAvailable ? 1 : 0));
+            }
+            if (subscriptionIdentifiersAvailable != null) {
+                props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.SUBSCRIPTION_IDENTIFIER_AVAILABLE.value(),
+                        subscriptionIdentifiersAvailable ? 1 : 0));
+            }
+            if (sharedSubscriptionAvailable != null) {
+                props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.SHARED_SUBSCRIPTION_AVAILABLE.value(),
+                        sharedSubscriptionAvailable ? 1 : 0));
+            }
+            if (serverKeepAlive != null) {
+                props.add(new MqttProperties.IntegerProperty(MqttProperties.MqttPropertyType.SERVER_KEEP_ALIVE.value(),
+                        serverKeepAlive));
+            }
+            if (responseInformation != null) {
+                props.add(new MqttProperties.StringProperty(MqttProperties.MqttPropertyType.RESPONSE_INFORMATION.value(),
+                        responseInformation));
+            }
+            if (serverReference != null) {
+                props.add(new MqttProperties.StringProperty(MqttProperties.MqttPropertyType.SERVER_REFERENCE.value(),
+                        serverReference));
+            }
+            if (authenticationMethod != null) {
+                props.add(new MqttProperties.StringProperty(MqttProperties.MqttPropertyType.AUTHENTICATION_METHOD.value(),
+                        authenticationMethod));
+            }
+            if (authenticationData != null) {
+                props.add(new MqttProperties.BinaryProperty(MqttProperties.MqttPropertyType.AUTHENTICATION_DATA.value(),
+                        authenticationData));
+            }
+
+            return props;
+        }
+
+        public ConnAckPropertiesBuilder sessionExpiryInterval(long seconds) {
+            this.sessionExpiryInterval = seconds;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder receiveMaximum(int value) {
+            this.receiveMaximum = checkPositive(value, "value");
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder maximumQos(byte value) {
+            if (value != 0 && value != 1) {
+                throw new IllegalArgumentException("maximum QoS property could be 0 or 1");
+            }
+            this.maximumQos = value;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder retainAvailable(boolean retain) {
+            this.retain = retain;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder maximumPacketSize(long size) {
+            this.maximumPacketSize = checkPositive(size, "size");
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder assignedClientId(String clientId) {
+            this.clientId = clientId;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder topicAliasMaximum(int value) {
+            this.topicAliasMaximum = value;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder reasonString(String reason) {
+            this.reasonString = reason;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder userProperty(String name, String value) {
+            userProperties.add(name, value);
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder wildcardSubscriptionAvailable(boolean value) {
+            this.wildcardSubscriptionAvailable = value;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder subscriptionIdentifiersAvailable(boolean value) {
+            this.subscriptionIdentifiersAvailable = value;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder sharedSubscriptionAvailable(boolean value) {
+            this.sharedSubscriptionAvailable = value;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder serverKeepAlive(int seconds) {
+            this.serverKeepAlive = seconds;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder responseInformation(String value) {
+            this.responseInformation = value;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder serverReference(String host) {
+            this.serverReference = host;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder authenticationMethod(String methodName) {
+            this.authenticationMethod = methodName;
+            return this;
+        }
+
+        public ConnAckPropertiesBuilder authenticationData(byte[] rawData) {
+            this.authenticationData = rawData.clone();
+            return this;
+        }
+    }
+
+    public static final class PubAckBuilder {
+
+        private int packetId;
+        private byte reasonCode;
+        private MqttProperties properties;
+
+        PubAckBuilder() {
+        }
+
+        public PubAckBuilder reasonCode(byte reasonCode) {
+            this.reasonCode = reasonCode;
+            return this;
+        }
+
+        public PubAckBuilder packetId(int packetId) {
+            this.packetId = packetId;
+            return this;
+        }
+
+        /**
+         * @deprecated use {@link PubAckBuilder#packetId(int)} instead
+         */
+        @Deprecated
+        public PubAckBuilder packetId(short packetId) {
+            return packetId(packetId & 0xFFFF);
+        }
+
+        public PubAckBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
+        public MqttMessage build() {
+            MqttFixedHeader mqttFixedHeader =
+                    new MqttFixedHeader(MqttMessageType.PUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
+            MqttPubReplyMessageVariableHeader mqttPubAckVariableHeader =
+                    new MqttPubReplyMessageVariableHeader(packetId, reasonCode, properties);
+            return new MqttMessage(mqttFixedHeader, mqttPubAckVariableHeader);
+        }
+    }
+
+    public static final class SubAckBuilder {
+
+        private int packetId;
+        private MqttProperties properties;
+        private final List<MqttQoS> grantedQoses = new ArrayList<MqttQoS>();
+
+        SubAckBuilder() {
+        }
+
+        public SubAckBuilder packetId(int packetId) {
+            this.packetId = packetId;
+            return this;
+        }
+
+        /**
+         * @deprecated use {@link SubAckBuilder#packetId(int)} instead
+         */
+        @Deprecated
+        public SubAckBuilder packetId(short packetId) {
+            return packetId(packetId & 0xFFFF);
+        }
+
+        public SubAckBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
+        public SubAckBuilder addGrantedQos(MqttQoS qos) {
+            this.grantedQoses.add(qos);
+            return this;
+        }
+
+        public SubAckBuilder addGrantedQoses(MqttQoS... qoses) {
+            this.grantedQoses.addAll(Arrays.asList(qoses));
+            return this;
+        }
+
+        public MqttSubAckMessage build() {
+            MqttFixedHeader mqttFixedHeader =
+                    new MqttFixedHeader(MqttMessageType.SUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
+            MqttMessageIdAndPropertiesVariableHeader mqttSubAckVariableHeader =
+                    new MqttMessageIdAndPropertiesVariableHeader(packetId, properties);
+
+            //transform to primitive types
+            int[] grantedQoses = new int[this.grantedQoses.size()];
+            int i = 0;
+            for (MqttQoS grantedQos : this.grantedQoses) {
+                grantedQoses[i++] = grantedQos.value();
+            }
+
+            MqttSubAckPayload subAckPayload = new MqttSubAckPayload(grantedQoses);
+            return new MqttSubAckMessage(mqttFixedHeader, mqttSubAckVariableHeader, subAckPayload);
+        }
+    }
+
+    public static final class UnsubAckBuilder {
+
+        private int packetId;
+        private MqttProperties properties;
+        private final List<Short> reasonCodes = new ArrayList<Short>();
+
+        UnsubAckBuilder() {
+        }
+
+        public UnsubAckBuilder packetId(int packetId) {
+            this.packetId = packetId;
+            return this;
+        }
+
+        /**
+         * @deprecated use {@link UnsubAckBuilder#packetId(int)} instead
+         */
+        @Deprecated
+        public UnsubAckBuilder packetId(short packetId) {
+            return packetId(packetId & 0xFFFF);
+        }
+
+        public UnsubAckBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
+        public UnsubAckBuilder addReasonCode(short reasonCode) {
+            this.reasonCodes.add(reasonCode);
+            return this;
+        }
+
+        public UnsubAckBuilder addReasonCodes(Short... reasonCodes) {
+            this.reasonCodes.addAll(Arrays.asList(reasonCodes));
+            return this;
+        }
+
+        public MqttUnsubAckMessage build() {
+            MqttFixedHeader mqttFixedHeader =
+                    new MqttFixedHeader(MqttMessageType.UNSUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
+            MqttMessageIdAndPropertiesVariableHeader mqttSubAckVariableHeader =
+                    new MqttMessageIdAndPropertiesVariableHeader(packetId, properties);
+
+            MqttUnsubAckPayload subAckPayload = new MqttUnsubAckPayload(reasonCodes);
+            return new MqttUnsubAckMessage(mqttFixedHeader, mqttSubAckVariableHeader, subAckPayload);
+        }
+    }
+
+    public static final class DisconnectBuilder {
+
+        private MqttProperties properties;
+        private byte reasonCode;
+
+        DisconnectBuilder() {
+        }
+
+        public DisconnectBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
+        public DisconnectBuilder reasonCode(byte reasonCode) {
+            this.reasonCode = reasonCode;
+            return this;
+        }
+
+        public MqttMessage build() {
+            MqttFixedHeader mqttFixedHeader =
+                    new MqttFixedHeader(MqttMessageType.DISCONNECT, false, MqttQoS.AT_MOST_ONCE, false, 0);
+            MqttReasonCodeAndPropertiesVariableHeader mqttDisconnectVariableHeader =
+                    new MqttReasonCodeAndPropertiesVariableHeader(reasonCode, properties);
+
+            return new MqttMessage(mqttFixedHeader, mqttDisconnectVariableHeader);
+        }
+    }
+
+    public static final class AuthBuilder {
+
+        private MqttProperties properties;
+        private byte reasonCode;
+
+        AuthBuilder() {
+        }
+
+        public AuthBuilder properties(MqttProperties properties) {
+            this.properties = properties;
+            return this;
+        }
+
+        public AuthBuilder reasonCode(byte reasonCode) {
+            this.reasonCode = reasonCode;
+            return this;
+        }
+
+        public MqttMessage build() {
+            MqttFixedHeader mqttFixedHeader =
+                    new MqttFixedHeader(MqttMessageType.AUTH, false, MqttQoS.AT_MOST_ONCE, false, 0);
+            MqttReasonCodeAndPropertiesVariableHeader mqttAuthVariableHeader =
+                    new MqttReasonCodeAndPropertiesVariableHeader(reasonCode, properties);
+
+            return new MqttMessage(mqttFixedHeader, mqttAuthVariableHeader);
+        }
+    }
+
    public static ConnectBuilder connect() {
        return new ConnectBuilder();
    }
@@ -278,6 +737,26 @@ public final class MqttMessageBuilders {
        return new UnsubscribeBuilder();
    }

+    public static PubAckBuilder pubAck() {
+        return new PubAckBuilder();
+    }
+
+    public static SubAckBuilder subAck() {
+        return new SubAckBuilder();
+    }
+
+    public static UnsubAckBuilder unsubAck() {
+        return new UnsubAckBuilder();
+    }
+
+    public static DisconnectBuilder disconnect() {
+        return new DisconnectBuilder();
+    }
+
+    public static AuthBuilder auth() {
+        return new AuthBuilder();
+    }
+
    private MqttMessageBuilders() {
    }
 }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -50,7 +50,8 @@ public final class MqttMessageFactory {
            case UNSUBACK:
                return new MqttUnsubAckMessage(
                        mqttFixedHeader,
-                        (MqttMessageIdVariableHeader) variableHeader);
+                        (MqttMessageIdVariableHeader) variableHeader,
+                        (MqttUnsubAckPayload) payload);

            case UNSUBSCRIBE:
                return new MqttUnsubscribeMessage(
@@ -65,17 +66,24 @@ public final class MqttMessageFactory {
                        (ByteBuf) payload);

            case PUBACK:
+                //Having MqttPubReplyMessageVariableHeader or MqttMessageIdVariableHeader
                return new MqttPubAckMessage(mqttFixedHeader, (MqttMessageIdVariableHeader) variableHeader);
            case PUBREC:
            case PUBREL:
            case PUBCOMP:
+                //Having MqttPubReplyMessageVariableHeader or MqttMessageIdVariableHeader
                return new MqttMessage(mqttFixedHeader, variableHeader);

            case PINGREQ:
            case PINGRESP:
-            case DISCONNECT:
                return new MqttMessage(mqttFixedHeader);

+            case DISCONNECT:
+            case AUTH:
+                //Having MqttReasonCodeAndPropertiesVariableHeader
+                return new MqttMessage(mqttFixedHeader,
+                        variableHeader);
+
            default:
                throw new IllegalArgumentException("unknown message type: " + mqttFixedHeader.messageType());
        }
@@ -85,5 +93,10 @@ public final class MqttMessageFactory {
        return new MqttMessage(null, null, null, DecoderResult.failure(cause));
    }

+    public static MqttMessage newInvalidMessage(MqttFixedHeader mqttFixedHeader, Object variableHeader,
+                                                Throwable cause) {
+        return new MqttMessage(mqttFixedHeader, variableHeader, null, DecoderResult.failure(cause));
+    }
+
    private MqttMessageFactory() { }
 }
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package io.netty.handler.codec.mqtt;
+
+import io.netty.util.internal.StringUtil;
+
+/**
+ * Variable Header containing, Packet Id and Properties as in MQTT v5 spec.
+ */
+public final class MqttMessageIdAndPropertiesVariableHeader extends MqttMessageIdVariableHeader {
+
+    private final MqttProperties properties;
+
+    public MqttMessageIdAndPropertiesVariableHeader(int messageId, MqttProperties properties) {
+        super(messageId);
+        if (messageId < 1 || messageId > 0xffff) {
+            throw new IllegalArgumentException("messageId: " + messageId + " (expected: 1 ~ 65535)");
+        }
+        this.properties = MqttProperties.withEmptyDefaults(properties);
+    }
+
+    public MqttProperties properties() {
+        return properties;
+    }
+
+    @Override
+    public String toString() {
+        return StringUtil.simpleClassName(this) + "[" +
+                "messageId=" + messageId() +
+                ", properties=" + properties +
+                ']';
+    }
+
+    @Override
+    MqttMessageIdAndPropertiesVariableHeader withDefaultEmptyProperties() {
+        return this;
+    }
+}
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -20,9 +20,9 @@ import io.netty.util.internal.StringUtil;

 /**
 * Variable Header containing only Message Id
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#msg-id">MQTTV3.1/msg-id</a>
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#msg-id">MQTTV3.1/msg-id</a>
 */
-public final class MqttMessageIdVariableHeader {
+public class MqttMessageIdVariableHeader {

    private final int messageId;

@@ -33,7 +33,7 @@ public final class MqttMessageIdVariableHeader {
      return new MqttMessageIdVariableHeader(messageId);
    }

-    private MqttMessageIdVariableHeader(int messageId) {
+    protected MqttMessageIdVariableHeader(int messageId) {
        this.messageId = messageId;
    }

@@ -49,4 +49,12 @@ public final class MqttMessageIdVariableHeader {
            .append(']')
            .toString();
    }
+
+    public MqttMessageIdAndPropertiesVariableHeader withEmptyProperties() {
+        return new MqttMessageIdAndPropertiesVariableHeader(messageId, MqttProperties.NO_PROPERTIES);
+    }
+
+    MqttMessageIdAndPropertiesVariableHeader withDefaultEmptyProperties() {
+        return withEmptyProperties();
+    }
 }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -33,7 +33,24 @@ public enum MqttMessageType {
    UNSUBACK(11),
    PINGREQ(12),
    PINGRESP(13),
-    DISCONNECT(14);
+    DISCONNECT(14),
+    AUTH(15);
+
+    private static final MqttMessageType[] VALUES;
+
+    static {
+        // this prevent values to be assigned with the wrong order
+        // and ensure valueOf to work fine
+        final MqttMessageType[] values = values();
+        VALUES = new MqttMessageType[values.length + 1];
+        for (MqttMessageType mqttMessageType : values) {
+            final int value = mqttMessageType.value;
+            if (VALUES[value] != null) {
+                throw new AssertionError("value already in use: " + value);
+            }
+            VALUES[value] = mqttMessageType;
+        }
+    }

    private final int value;

@@ -46,12 +63,10 @@ public enum MqttMessageType {
    }

    public static MqttMessageType valueOf(int type) {
-        for (MqttMessageType t : values()) {
-            if (t.value == type) {
-                return t;
-            }
+        if (type <= 0 || type >= VALUES.length) {
+            throw new IllegalArgumentException("unknown message type: " + type);
        }
-        throw new IllegalArgumentException("unknown message type: " + type);
+        return VALUES[type];
    }
 }

@@ -0,0 +1,414 @@
+/*
+ * Copyright 2020 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.handler.codec.mqtt;
+
+import io.netty.util.collection.IntObjectHashMap;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.ArrayList;
+
+/**
+ * MQTT Properties container
+ * */
+public final class MqttProperties {
+
+    public enum MqttPropertyType {
+        // single byte properties
+        PAYLOAD_FORMAT_INDICATOR(0x01),
+        REQUEST_PROBLEM_INFORMATION(0x17),
+        REQUEST_RESPONSE_INFORMATION(0x19),
+        MAXIMUM_QOS(0x24),
+        RETAIN_AVAILABLE(0x25),
+        WILDCARD_SUBSCRIPTION_AVAILABLE(0x28),
+        SUBSCRIPTION_IDENTIFIER_AVAILABLE(0x29),
+        SHARED_SUBSCRIPTION_AVAILABLE(0x2A),
+
+        // two bytes properties
+        SERVER_KEEP_ALIVE(0x13),
+        RECEIVE_MAXIMUM(0x21),
+        TOPIC_ALIAS_MAXIMUM(0x22),
+        TOPIC_ALIAS(0x23),
+
+        // four bytes properties
+        PUBLICATION_EXPIRY_INTERVAL(0x02),
+        SESSION_EXPIRY_INTERVAL(0x11),
+        WILL_DELAY_INTERVAL(0x18),
+        MAXIMUM_PACKET_SIZE(0x27),
+
+        // Variable Byte Integer
+        SUBSCRIPTION_IDENTIFIER(0x0B),
+
+        // UTF-8 Encoded String properties
+        CONTENT_TYPE(0x03),
+        RESPONSE_TOPIC(0x08),
+        ASSIGNED_CLIENT_IDENTIFIER(0x12),
+        AUTHENTICATION_METHOD(0x15),
+        RESPONSE_INFORMATION(0x1A),
+        SERVER_REFERENCE(0x1C),
+        REASON_STRING(0x1F),
+        USER_PROPERTY(0x26),
+
+        // Binary Data
+        CORRELATION_DATA(0x09),
+        AUTHENTICATION_DATA(0x16);
+
+        private static final MqttPropertyType[] VALUES;
+
+        static {
+            VALUES = new MqttPropertyType[43];
+            for (MqttPropertyType v : values()) {
+                VALUES[v.value] = v;
+            }
+        }
+
+        private final int value;
+
+        MqttPropertyType(int value) {
+            this.value = value;
+        }
+
+        public int value() {
+            return value;
+        }
+
+        public static MqttPropertyType valueOf(int type) {
+            MqttPropertyType t = null;
+            try {
+                t = VALUES[type];
+            } catch (ArrayIndexOutOfBoundsException ignored) {
+                // nop
+            }
+            if (t == null) {
+                throw new IllegalArgumentException("unknown property type: " + type);
+            }
+            return t;
+        }
+    }
+
+    public static final MqttProperties NO_PROPERTIES = new MqttProperties(false);
+
+    static MqttProperties withEmptyDefaults(MqttProperties properties) {
+        if (properties == null) {
+            return MqttProperties.NO_PROPERTIES;
+        }
+        return properties;
+    }
+
+    /**
+     * MQTT property base class
+     *
+     * @param <T> property type
+     */
+    public abstract static class MqttProperty<T> {
+        final T value;
+        final int propertyId;
+
+        protected MqttProperty(int propertyId, T value) {
+            this.propertyId = propertyId;
+            this.value = value;
+        }
+
+        /**
+         * Get MQTT property value
+         *
+         * @return property value
+         */
+        public T value() {
+            return value;
+        }
+
+        /**
+         * Get MQTT property ID
+         * @return property ID
+         */
+        public int propertyId() {
+            return propertyId;
+        }
+
+        @Override
+        public int hashCode() {
+            return propertyId + 31 * value.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+            if (obj == null || getClass() != obj.getClass()) {
+                return false;
+            }
+            MqttProperty that = (MqttProperty) obj;
+            return this.propertyId == that.propertyId && this.value.equals(that.value);
+        }
+    }
+
+    public static final class IntegerProperty extends MqttProperty<Integer> {
+
+        public IntegerProperty(int propertyId, Integer value) {
+            super(propertyId, value);
+        }
+
+        @Override
+        public String toString() {
+            return "IntegerProperty(" + propertyId + ", " + value + ")";
+        }
+    }
+
+    public static final class StringProperty extends MqttProperty<String> {
+
+        public StringProperty(int propertyId, String value) {
+            super(propertyId, value);
+        }
+
+        @Override
+        public String toString() {
+            return "StringProperty(" + propertyId + ", " + value + ")";
+        }
+    }
+
+    public static final class StringPair {
+        public final String key;
+        public final String value;
+
+        public StringPair(String key, String value) {
+            this.key = key;
+            this.value = value;
+        }
+
+        @Override
+        public int hashCode() {
+            return key.hashCode() + 31 * value.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+            if (obj == null || getClass() != obj.getClass()) {
+                return false;
+            }
+            StringPair that = (StringPair) obj;
+
+            return that.key.equals(this.key) && that.value.equals(this.value);
+        }
+    }
+
+    //User properties are the only properties that may be included multiple times and
+    //are the only properties where ordering is required. Therefore, they need a special handling
+    public static final class UserProperties extends MqttProperty<List<StringPair>> {
+        public UserProperties() {
+            super(MqttPropertyType.USER_PROPERTY.value, new ArrayList<StringPair>());
+        }
+
+        /**
+         * Create user properties from the collection of the String pair values
+         *
+         * @param values string pairs. Collection entries are copied, collection itself isn't shared
+         */
+        public UserProperties(Collection<StringPair> values) {
+            this();
+            this.value.addAll(values);
+        }
+
+        private static UserProperties fromUserPropertyCollection(Collection<UserProperty> properties) {
+            UserProperties userProperties = new UserProperties();
+            for (UserProperty property: properties) {
+                userProperties.add(new StringPair(property.value.key, property.value.value));
+            }
+            return userProperties;
+        }
+
+        public void add(StringPair pair) {
+            this.value.add(pair);
+        }
+
+        public void add(String key, String value) {
+            this.value.add(new StringPair(key, value));
+        }
+
+        @Override
+        public String toString() {
+            StringBuilder builder = new StringBuilder("UserProperties(");
+            boolean first = true;
+            for (StringPair pair: value) {
+                if (!first) {
+                    builder.append(", ");
+                }
+                builder.append(pair.key + "->" + pair.value);
+                first = false;
+            }
+            builder.append(")");
+            return builder.toString();
+        }
+    }
+
+    public static final class UserProperty extends MqttProperty<StringPair> {
+        public UserProperty(String key, String value) {
+            super(MqttPropertyType.USER_PROPERTY.value, new StringPair(key, value));
+        }
+
+        @Override
+        public String toString() {
+            return "UserProperty(" + value.key + ", " + value.value + ")";
+        }
+    }
+
+    public static final class BinaryProperty extends MqttProperty<byte[]> {
+
+        public BinaryProperty(int propertyId, byte[] value) {
+            super(propertyId, value);
+        }
+
+        @Override
+        public String toString() {
+            return "BinaryProperty(" + propertyId + ", " + value.length + " bytes)";
+        }
+    }
+
+    public MqttProperties() {
+        this(true);
+    }
+
+    private MqttProperties(boolean canModify) {
+        this.canModify = canModify;
+    }
+
+    private IntObjectHashMap<MqttProperty> props;
+    private List<UserProperty> userProperties;
+    private List<IntegerProperty> subscriptionIds;
+    private final boolean canModify;
+
+    public void add(MqttProperty property) {
+        if (!canModify) {
+            throw new UnsupportedOperationException("adding property isn't allowed");
+        }
+        IntObjectHashMap<MqttProperty> props = this.props;
+        if (property.propertyId == MqttPropertyType.USER_PROPERTY.value) {
+            List<UserProperty> userProperties = this.userProperties;
+            if (userProperties == null) {
+                userProperties = new ArrayList<UserProperty>(1);
+                this.userProperties = userProperties;
+            }
+            if (property instanceof UserProperty) {
+                userProperties.add((UserProperty) property);
+            } else if (property instanceof UserProperties) {
+                for (StringPair pair: ((UserProperties) property).value) {
+                    userProperties.add(new UserProperty(pair.key, pair.value));
+                }
+            } else {
+                throw new IllegalArgumentException("User property must be of UserProperty or UserProperties type");
+            }
+        } else if (property.propertyId == MqttPropertyType.SUBSCRIPTION_IDENTIFIER.value) {
+            List<IntegerProperty> subscriptionIds = this.subscriptionIds;
+            if (subscriptionIds == null) {
+                subscriptionIds = new ArrayList<IntegerProperty>(1);
+                this.subscriptionIds = subscriptionIds;
+            }
+            if (property instanceof IntegerProperty) {
+                subscriptionIds.add((IntegerProperty) property);
+            } else {
+                throw new IllegalArgumentException("Subscription ID must be an integer property");
+            }
+        } else {
+            if (props == null) {
+                props = new IntObjectHashMap<MqttProperty>();
+                this.props = props;
+            }
+            props.put(property.propertyId, property);
+        }
+    }
+
+    public Collection<? extends MqttProperty> listAll() {
+        IntObjectHashMap<MqttProperty> props = this.props;
+        if (props == null && subscriptionIds == null && userProperties == null) {
+            return Collections.<MqttProperty>emptyList();
+        }
+        if (subscriptionIds == null && userProperties == null) {
+            return props.values();
+        }
+        if (props == null && userProperties == null) {
+            return subscriptionIds;
+        }
+        List<MqttProperty> propValues = new ArrayList<MqttProperty>(props != null ? props.size() : 1);
+        if (props != null) {
+            propValues.addAll(props.values());
+        }
+        if (subscriptionIds != null) {
+            propValues.addAll(subscriptionIds);
+        }
+        if (userProperties != null) {
+            propValues.add(UserProperties.fromUserPropertyCollection(userProperties));
+        }
+        return propValues;
+    }
+
+    public boolean isEmpty() {
+        IntObjectHashMap<MqttProperty> props = this.props;
+        return props == null || props.isEmpty();
+    }
+
+    /**
+     * Get property by ID. If there are multiple properties of this type (can be with Subscription ID)
+     * then return the first one.
+     *
+     * @param propertyId ID of the property
+     * @return a property if it is set, null otherwise
+     */
+    public MqttProperty getProperty(int propertyId) {
+        if (propertyId == MqttPropertyType.USER_PROPERTY.value) {
+            //special handling to keep compatibility with earlier versions
+            List<UserProperty> userProperties = this.userProperties;
+            if (userProperties == null) {
+                return null;
+            }
+            return UserProperties.fromUserPropertyCollection(userProperties);
+        }
+        if (propertyId == MqttPropertyType.SUBSCRIPTION_IDENTIFIER.value) {
+            List<IntegerProperty> subscriptionIds = this.subscriptionIds;
+            if (subscriptionIds == null || subscriptionIds.isEmpty()) {
+                return null;
+            }
+            return subscriptionIds.get(0);
+        }
+        IntObjectHashMap<MqttProperty> props = this.props;
+        return props == null ? null : props.get(propertyId);
+    }
+
+    /**
+     * Get properties by ID.
+     * Some properties (Subscription ID and User Properties) may occur multiple times,
+     * this method returns all their values in order.
+     *
+     * @param propertyId ID of the property
+     * @return all properties having specified ID
+     */
+    public List<? extends MqttProperty> getProperties(int propertyId) {
+        if (propertyId == MqttPropertyType.USER_PROPERTY.value) {
+            return userProperties == null ? Collections.<MqttProperty>emptyList() : userProperties;
+        }
+        if (propertyId == MqttPropertyType.SUBSCRIPTION_IDENTIFIER.value) {
+            return subscriptionIds == null ? Collections.<MqttProperty>emptyList() : subscriptionIds;
+        }
+        IntObjectHashMap<MqttProperty> props = this.props;
+        return (props == null || !props.containsKey(propertyId)) ?
+                Collections.<MqttProperty>emptyList() :
+                Collections.singletonList(props.get(propertyId));
+    }
+}
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -17,7 +17,7 @@
 package io.netty.handler.codec.mqtt;

 /**
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#puback">MQTTV3.1/puback</a>
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#puback">MQTTV3.1/puback</a>
 */
 public final class MqttPubAckMessage extends MqttMessage {

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2020 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package io.netty.handler.codec.mqtt;
+
+import io.netty.util.internal.StringUtil;
+
+/**
+ * Variable Header containing Packet Id, reason code and Properties as in MQTT v5 spec.
+ */
+public final class MqttPubReplyMessageVariableHeader extends MqttMessageIdVariableHeader {
+
+    private final byte reasonCode;
+    private final MqttProperties properties;
+
+    public static final byte REASON_CODE_OK = 0;
+
+    public MqttPubReplyMessageVariableHeader(int messageId, byte reasonCode, MqttProperties properties) {
+        super(messageId);
+        if (messageId < 1 || messageId > 0xffff) {
+            throw new IllegalArgumentException("messageId: " + messageId + " (expected: 1 ~ 65535)");
+        }
+        this.reasonCode = reasonCode;
+        this.properties = MqttProperties.withEmptyDefaults(properties);
+    }
+
+    public byte reasonCode() {
+        return reasonCode;
+    }
+
+    public MqttProperties properties() {
+        return properties;
+    }
+
+    @Override
+    public String toString() {
+        return StringUtil.simpleClassName(this) + "[" +
+                "messageId=" + messageId() +
+                ", reasonCode=" + reasonCode +
+                ", properties=" + properties +
+                ']';
+    }
+}
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -18,10 +18,10 @@ package io.netty.handler.codec.mqtt;

 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufHolder;
-import io.netty.util.IllegalReferenceCountException;
+import io.netty.buffer.ByteBufUtil;

 /**
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#publish">MQTTV3.1/publish</a>
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#publish">MQTTV3.1/publish</a>
 */
 public class MqttPublishMessage extends MqttMessage implements ByteBufHolder {

@@ -44,11 +44,7 @@ public class MqttPublishMessage extends MqttMessage implements ByteBufHolder {

    @Override
    public ByteBuf content() {
-        final ByteBuf data = (ByteBuf) super.payload();
-        if (data.refCnt() <= 0) {
-            throw new IllegalReferenceCountException(data.refCnt());
-        }
-        return data;
+        return ByteBufUtil.ensureAccessible((ByteBuf) super.payload());
    }

    @Override
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -24,11 +24,17 @@ import io.netty.util.internal.StringUtil;
 public final class MqttPublishVariableHeader {

    private final String topicName;
-    private final int packetId;
+    private int packetId;
+    private final MqttProperties properties;

    public MqttPublishVariableHeader(String topicName, int packetId) {
+        this(topicName, packetId, MqttProperties.NO_PROPERTIES);
+    }
+
+    public MqttPublishVariableHeader(String topicName, int packetId, MqttProperties properties) {
        this.topicName = topicName;
        this.packetId = packetId;
+        this.properties = MqttProperties.withEmptyDefaults(properties);
    }

    public String topicName() {
@@ -47,6 +53,14 @@ public final class MqttPublishVariableHeader {
        return packetId;
    }

+    public MqttProperties properties() {
+        return properties;
+    }
+
+    public void setPacketId(int packetId) {
+        this.packetId = packetId;
+    }
+
    @Override
    public String toString() {
        return new StringBuilder(StringUtil.simpleClassName(this))
@@ -5,7 +5,7 @@
 * "License"); you may not use this file except in compliance with the License. You may obtain a
 * copy of the License at:
 *
- * http://www.apache.org/licenses/LICENSE-2.0
+ * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
@@ -32,11 +32,17 @@ public enum MqttQoS {
    }

    public static MqttQoS valueOf(int value) {
-        for (MqttQoS q: values()) {
-            if (q.value == value) {
-                return q;
-            }
+        switch (value) {
+        case 0:
+            return AT_MOST_ONCE;
+        case 1:
+            return AT_LEAST_ONCE;
+        case 2:
+            return EXACTLY_ONCE;
+        case 0x80:
+            return FAILURE;
+        default:
+            throw new IllegalArgumentException("invalid QoS: " + value);
        }
-        throw new IllegalArgumentException("invalid QoS: " + value);
    }
 }
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2020 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package io.netty.handler.codec.mqtt;
+
+import io.netty.util.internal.StringUtil;
+
+/**
+ * Variable Header for AUTH and DISCONNECT messages represented by {@link MqttMessage}
+ */
+public final class MqttReasonCodeAndPropertiesVariableHeader {
+
+    private final byte reasonCode;
+    private final MqttProperties properties;
+
+    public static final byte REASON_CODE_OK = 0;
+
+    public MqttReasonCodeAndPropertiesVariableHeader(byte reasonCode,
+                                                     MqttProperties properties) {
+        this.reasonCode = reasonCode;
+        this.properties = MqttProperties.withEmptyDefaults(properties);
+    }
+
+    public byte reasonCode() {
+        return reasonCode;
+    }
+
+    public MqttProperties properties() {
+        return properties;
+    }
+
+    @Override
+    public String toString() {
+        return new StringBuilder(StringUtil.simpleClassName(this))
+            .append('[')
+            .append("reasonCode=").append(reasonCode)
+            .append(", properties=").append(properties)
+            .append(']')
+            .toString();
+    }
+}
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -17,22 +17,33 @@
 package io.netty.handler.codec.mqtt;

 /**
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#suback">MQTTV3.1/suback</a>
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#suback">MQTTV3.1/suback</a>
 */
 public final class MqttSubAckMessage extends MqttMessage {

    public MqttSubAckMessage(
            MqttFixedHeader mqttFixedHeader,
-            MqttMessageIdVariableHeader variableHeader,
+            MqttMessageIdAndPropertiesVariableHeader variableHeader,
            MqttSubAckPayload payload) {
        super(mqttFixedHeader, variableHeader, payload);
    }

+    public MqttSubAckMessage(
+            MqttFixedHeader mqttFixedHeader,
+            MqttMessageIdVariableHeader variableHeader,
+            MqttSubAckPayload payload) {
+        this(mqttFixedHeader, variableHeader.withDefaultEmptyProperties(), payload);
+    }
+
    @Override
    public MqttMessageIdVariableHeader variableHeader() {
        return (MqttMessageIdVariableHeader) super.variableHeader();
    }

+    public MqttMessageIdAndPropertiesVariableHeader idAndPropertiesVariableHeader() {
+        return (MqttMessageIdAndPropertiesVariableHeader) super.variableHeader();
+    }
+
    @Override
    public MqttSubAckPayload payload() {
        return (MqttSubAckPayload) super.payload();
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -16,6 +16,7 @@

 package io.netty.handler.codec.mqtt;

+import io.netty.util.internal.ObjectUtil;
 import io.netty.util.internal.StringUtil;

 import java.util.ArrayList;
@@ -27,43 +28,51 @@ import java.util.List;
 */
 public class MqttSubAckPayload {

-    private final List<Integer> grantedQoSLevels;
+    private final List<Integer> reasonCodes;

-    public MqttSubAckPayload(int... grantedQoSLevels) {
-        if (grantedQoSLevels == null) {
-            throw new NullPointerException("grantedQoSLevels");
-        }
+    public MqttSubAckPayload(int... reasonCodes) {
+        ObjectUtil.checkNotNull(reasonCodes, "reasonCodes");

-        List<Integer> list = new ArrayList<Integer>(grantedQoSLevels.length);
-        for (int v: grantedQoSLevels) {
+        List<Integer> list = new ArrayList<Integer>(reasonCodes.length);
+        for (int v: reasonCodes) {
            list.add(v);
        }
-        this.grantedQoSLevels = Collections.unmodifiableList(list);
+        this.reasonCodes = Collections.unmodifiableList(list);
    }

-    public MqttSubAckPayload(Iterable<Integer> grantedQoSLevels) {
-        if (grantedQoSLevels == null) {
-            throw new NullPointerException("grantedQoSLevels");
-        }
+    public MqttSubAckPayload(Iterable<Integer> reasonCodes) {
+        ObjectUtil.checkNotNull(reasonCodes, "reasonCodes");
        List<Integer> list = new ArrayList<Integer>();
-        for (Integer v: grantedQoSLevels) {
+        for (Integer v: reasonCodes) {
            if (v == null) {
                break;
            }
            list.add(v);
        }
-        this.grantedQoSLevels = Collections.unmodifiableList(list);
+        this.reasonCodes = Collections.unmodifiableList(list);
    }

    public List<Integer> grantedQoSLevels() {
-        return grantedQoSLevels;
+        List<Integer> qosLevels = new ArrayList<Integer>(reasonCodes.size());
+        for (int code: reasonCodes) {
+            if (code > MqttQoS.EXACTLY_ONCE.value()) {
+                qosLevels.add(MqttQoS.FAILURE.value());
+            } else {
+                qosLevels.add(code);
+            }
+        }
+        return qosLevels;
+    }
+
+    public List<Integer> reasonCodes() {
+        return reasonCodes;
    }

    @Override
    public String toString() {
        return new StringBuilder(StringUtil.simpleClassName(this))
            .append('[')
-            .append("grantedQoSLevels=").append(grantedQoSLevels)
+            .append("reasonCodes=").append(reasonCodes)
            .append(']')
            .toString();
    }
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -17,23 +17,34 @@
 package io.netty.handler.codec.mqtt;

 /**
- * See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#subscribe">
+ * See <a href="https://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#subscribe">
 *     MQTTV3.1/subscribe</a>
 */
 public final class MqttSubscribeMessage extends MqttMessage {

    public MqttSubscribeMessage(
            MqttFixedHeader mqttFixedHeader,
-            MqttMessageIdVariableHeader variableHeader,
+            MqttMessageIdAndPropertiesVariableHeader variableHeader,
            MqttSubscribePayload payload) {
        super(mqttFixedHeader, variableHeader, payload);
    }

+    public MqttSubscribeMessage(
+            MqttFixedHeader mqttFixedHeader,
+            MqttMessageIdVariableHeader variableHeader,
+            MqttSubscribePayload payload) {
+        this(mqttFixedHeader, variableHeader.withDefaultEmptyProperties(), payload);
+    }
+
    @Override
    public MqttMessageIdVariableHeader variableHeader() {
        return (MqttMessageIdVariableHeader) super.variableHeader();
    }

+    public MqttMessageIdAndPropertiesVariableHeader idAndPropertiesVariableHeader() {
+        return (MqttMessageIdAndPropertiesVariableHeader) super.variableHeader();
+    }
+
    @Override
    public MqttSubscribePayload payload() {
        return (MqttSubscribePayload) super.payload();
@@ -5,7 +5,7 @@
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ -39,11 +39,12 @@ public final class MqttSubscribePayload {
    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder(StringUtil.simpleClassName(this)).append('[');
-        for (int i = 0; i < topicSubscriptions.size() - 1; i++) {
+        for (int i = 0; i < topicSubscriptions.size(); i++) {
            builder.append(topicSubscriptions.get(i)).append(", ");
        }
-        builder.append(topicSubscriptions.get(topicSubscriptions.size() - 1));
-        builder.append(']');
-        return builder.toString();
+        if (!topicSubscriptions.isEmpty()) {
+            builder.setLength(builder.length() - 2);
+        }
+        return builder.append(']').toString();
    }
 }
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2020 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.handler.codec.mqtt;
+
+/**
+ * Model the SubscriptionOption used in Subscribe MQTT v5 packet
+ */
+public final class MqttSubscriptionOption {
+
+    public enum RetainedHandlingPolicy {
+        SEND_AT_SUBSCRIBE(0),
+        SEND_AT_SUBSCRIBE_IF_NOT_YET_EXISTS(1),
+        DONT_SEND_AT_SUBSCRIBE(2);
+
+        private final int value;
+
+        RetainedHandlingPolicy(int value) {
+            this.value = value;
+        }
+
+        public int value() {
+            return value;
+        }
+
+        public static RetainedHandlingPolicy valueOf(int value) {
+            switch (value) {
+            case 0:
+                return SEND_AT_SUBSCRIBE;
+            case 1:
+                return SEND_AT_SUBSCRIBE_IF_NOT_YET_EXISTS;
+            case 2:
+                return DONT_SEND_AT_SUBSCRIBE;
+            default:
+                throw new IllegalArgumentException("invalid RetainedHandlingPolicy: " + value);
+            }
+        }
+    }
+
+    private final MqttQoS qos;
+    private final boolean noLocal;
+    private final boolean retainAsPublished;
+    private final RetainedHandlingPolicy retainHandling;
+
+    public static MqttSubscriptionOption onlyFromQos(MqttQoS qos) {
+        return new MqttSubscriptionOption(qos, false, false, RetainedHandlingPolicy.SEND_AT_SUBSCRIBE);
+    }
+
+    public MqttSubscriptionOption(MqttQoS qos,
+                                  boolean noLocal,
+                                  boolean retainAsPublished,
+                                  RetainedHandlingPolicy retainHandling) {
+        this.qos = qos;
+        this.noLocal = noLocal;
+        this.retainAsPublished = retainAsPublished;
+        this.retainHandling = retainHandling;
+    }
+
+    public MqttQoS qos() {
+        return qos;
+    }
+
+    public boolean isNoLocal() {
+        return noLocal;
+    }
+
+    public boolean isRetainAsPublished() {
+        return retainAsPublished;
+    }
+
+    public RetainedHandlingPolicy retainHandling() {
+        return retainHandling;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        MqttSubscriptionOption that = (MqttSubscriptionOption) o;
+
+        if (noLocal != that.noLocal) {
+            return false;
+        }
+        if (retainAsPublished != that.retainAsPublished) {
+            return false;
+        }
+        if (qos != that.qos) {
+            return false;
+        }
+        return retainHandling == that.retainHandling;
+    }
+
+    @Override
+    public int hashCode() {
+        int result = qos.hashCode();
+        result = 31 * result + (noLocal ? 1 : 0);
+        result = 31 * result + (retainAsPublished ? 1 : 0);
+        result = 31 * result + retainHandling.hashCode();
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        return "SubscriptionOption[" +
+                "qos=" + qos +
+                ", noLocal=" + noLocal +
+                ", retainAsPublished=" + retainAsPublished +
+                ", retainHandling=" + retainHandling +
+                ']';
+    }
+}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
heavyrian2012	d8cdcfc09d	udpate version and release not	2022-09-20 10:46:07 +08:00
heavyrian2012	209b1950b6	公众号消息添加摘要字段	2022-09-20 10:41:45 +08:00
heavyrian2012	7ea1a2b146	升级netty版本为4.1.68.Final	2022-09-18 22:05:22 +08:00
heavyrian2012	279530ade2	update github issue template	2022-09-08 21:28:42 +08:00
heavyrian2012	5a0fd95fc7	update readme	2022-09-08 13:34:18 +08:00
heavyrian2012	ec72ab6baf	fix build error	2022-09-06 16:14:20 +08:00
heavyrian2012	cd6c7d2da9	添加按照用户会话删除消息接口	2022-09-06 12:54:24 +08:00
heavyrian2012	39371797d2	update readme	2022-09-05 16:24:13 +08:00
heavyrian2012	f672f4550e	update version and release note	2022-08-31 20:30:03 +08:00
heavyrian2012	04c89d1fc1	gson单例化，另外关掉gson html转义功能	2022-08-31 20:24:46 +08:00
heavyrian2012	97540bdd1b	IM exception add node_id	2022-08-26 23:13:04 +08:00
heavyrain2012	8514d808b3	remove useless file	2022-08-26 19:31:57 +08:00
heavyrain2012	e8e3d91dbc	update	2022-08-26 19:18:16 +08:00
heavyrain2012	b64316c67d	添加超频限制白名单，某些命令不受超频限制	2022-08-26 19:11:52 +08:00
heavyrian2012	650ffa14e2	添加检查是否订阅频道server api	2022-08-26 15:16:48 +08:00
heavyrian2012	9fa33159c8	解决内置存储某些类型文件返回content-type错误问题	2022-08-26 00:22:18 +08:00
heavyrian2012	35794a777b	sdk添加删除会话接口	2022-08-26 00:19:57 +08:00
heavyrian2012	bf60ed2d7d	Merge branch 'wildfirechat' of github.com:wildfirechat/im-server into wildfirechat	2022-08-25 21:02:55 +08:00
heavyrian2012	0d09aad24f	update readme	2022-08-25 21:02:40 +08:00
heavyrain2012	8d31e031bc	update version and release	2022-08-25 14:22:58 +08:00
heavyrian2012	9af2bbf3d0	添加敏感词命中回调	2022-08-23 14:17:31 +08:00
heavyrian2012	d391ba386c	http client 添加部分参数，解决调用server sdk时可能出现的connection reset问题	2022-08-23 14:11:34 +08:00
heavyrian2012	b2ef3152db	短链接添加head处理	2022-08-22 15:28:24 +08:00
heavyrian2012	05fe5bd766	server api添加订阅接口	2022-08-20 13:43:12 +08:00
heavyrian2012	48c9b10365	添加release note	2022-08-19 08:50:45 +08:00
heavyrian2012	30cd56aae2	version 0.92	2022-08-19 08:23:19 +08:00
heavyrian2012	6fbecfb0fb	去掉无效的警告	2022-08-19 08:15:03 +08:00
heavyrian2012	d2cb8427bb	解决下载zip包编译失败的问题	2022-08-19 08:05:54 +08:00
heavyrian2012	826bad2d66	add menuid and extra	2022-08-16 20:10:56 +08:00
heavyrian2012	aaccec00e9	add article content	2022-08-16 15:05:30 +08:00
heavyrian2012	3c1c5ce6d3	menu	2022-08-14 22:08:35 +08:00
heavyrian2012	b0fe1636a7	添加配置，在关闭消息漫游时，客户端首次登陆同步多久时间以内的消息	2022-08-14 15:25:00 +08:00
heavyrian2012	014cd3844d	频道只有auto为1时才会回调消息和订阅事件。频道只回调用户发送的消息，自己发送的消息不回调	2022-08-09 15:39:34 +08:00
heavyrian2012	6cc00950f0	SDK部分pojo对象添加无参数构造函数	2022-08-09 12:17:59 +08:00
heavyrian2012	2918c06a01	version 0.91	2022-08-03 12:41:35 +08:00
heavyrian2012	c3b9b9fccf	群组添加成员时，检查是否已经存在群组成员， fix issue #501	2022-08-03 12:19:03 +08:00
heavyrian2012	8c88d5a13f	添加注释	2022-07-29 20:37:53 +08:00
heavyrian2012	967526f5ec	添加发送消息payload错误时的提醒	2022-07-29 20:33:18 +08:00
heavyrian2012	109078abca	参数有效性检查	2022-07-29 20:24:41 +08:00
heavyrian2012	79a58e99aa	添加配置运行回调消息带上客户端信息	2022-07-27 11:36:04 +08:00
heavyrian2012	a394444c86	创建群组时，检查群组类型的有效性	2022-07-21 22:10:39 +08:00
heavyrian2012	dece1d7a1c	sdk 添加获取会话阅读时间和消息送达时间接口	2022-07-20 22:25:46 +08:00
heavyrian2012	2b09a7bf84	version 0.90	2022-07-14 20:25:52 +08:00
heavyrian2012	200a6ebd04	添加注释	2022-07-14 20:22:36 +08:00
heavyrian2012	54db1f3b06	触发限频后多调用了一次callback，去掉无用的调用	2022-07-06 10:05:57 +08:00
heavyrian2012	3b90d145a4	去掉绑定IP地址的配置，防止客户误操作	2022-06-28 08:34:17 +08:00
heavyrain.lee	e16a116fe4	Merge pull request #487 from wildfirechat/dependabot/maven/broker/mysql-mysql-connector-java-8.0.28 Bump mysql-connector-java from 8.0.19 to 8.0.28 in /broker	2022-06-26 18:34:33 +08:00
dependabot[bot]	7bd0937069	Bump mysql-connector-java from 8.0.19 to 8.0.28 in /broker Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 8.0.19 to 8.0.28. - [Release notes](https://github.com/mysql/mysql-connector-j/releases) - [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/8.0/CHANGES) - [Commits](https://github.com/mysql/mysql-connector-j/compare/8.0.19...8.0.28) --- updated-dependencies: - dependency-name: mysql:mysql-connector-java dependency-type: direct:production ... Signed-off-by: dependabot[bot] <[email protected]>	2022-06-21 00:59:19 +00:00
heavyrian2012	c085057032	修正拼写错误	2022-06-09 15:03:56 +08:00
heavyrian2012	eac6648fc0	version 0.89	2022-06-09 09:42:34 +08:00
heavyrian2012	300f9aa0e6	update readme	2022-06-07 21:12:33 +08:00
heavyrian2012	dd40b72ec4	添加允许pc多端的配置	2022-06-06 09:37:37 +08:00
heavyrian2012	556e6ad2a0	解决某些java版本下反序列化IMResult<Void>失败问题	2022-05-27 13:25:21 +08:00
heavyrian2012	473ae32f57	update readme	2022-05-27 10:14:00 +08:00
heavyrian2012	d57ae2ed58	删除群组时清除相关设置	2022-05-27 08:35:12 +08:00
heavyrian2012	1a6907efd3	log4j version 2.17.2	2022-05-25 10:16:40 +08:00
heavyrain.lee	1624c470d6	Merge pull request #480 from wildfirechat/dependabot/maven/common/com.google.code.gson-gson-2.8.9 Bump gson from 2.8.2 to 2.8.9 in /common	2022-05-25 10:10:17 +08:00
heavyrain.lee	5ea6eefe67	Merge pull request #481 from wildfirechat/dependabot/maven/sdk/com.google.code.gson-gson-2.8.9 Bump gson from 2.8.2 to 2.8.9 in /sdk	2022-05-25 10:10:02 +08:00
heavyrian2012	8aebb2537a	version 0.88	2022-05-23 14:53:40 +08:00
heavyrian2012	250b0ccebe	解决server api撤回单聊消息无法撤回的问题	2022-05-23 14:20:30 +08:00
heavyrian2012	91669c634f	add send articles message builder	2022-05-22 11:26:01 +08:00
dependabot[bot]	bf51cb9829	Bump gson from 2.8.2 to 2.8.9 in /sdk Bumps [gson](https://github.com/google/gson) from 2.8.2 to 2.8.9. - [Release notes](https://github.com/google/gson/releases) - [Changelog](https://github.com/google/gson/blob/master/CHANGELOG.md) - [Commits](https://github.com/google/gson/compare/gson-parent-2.8.2...gson-parent-2.8.9) --- updated-dependencies: - dependency-name: com.google.code.gson:gson dependency-type: direct:production ... Signed-off-by: dependabot[bot] <[email protected]>	2022-05-20 21:09:22 +00:00
dependabot[bot]	baadcac2c6	Bump gson from 2.8.2 to 2.8.9 in /common Bumps [gson](https://github.com/google/gson) from 2.8.2 to 2.8.9. - [Release notes](https://github.com/google/gson/releases) - [Changelog](https://github.com/google/gson/blob/master/CHANGELOG.md) - [Commits](https://github.com/google/gson/compare/gson-parent-2.8.2...gson-parent-2.8.9) --- updated-dependencies: - dependency-name: com.google.code.gson:gson dependency-type: direct:production ... Signed-off-by: dependabot[bot] <[email protected]>	2022-05-20 21:09:06 +00:00
heavyrian2012	6c69a5ac96	null 判断	2022-05-19 12:37:01 +08:00
heavyrian2012	eb19ed3301	添加富通知消息的发送测试	2022-05-19 10:29:24 +08:00
heavyrian2012	5be7576bb8	管理端口获取authCode时使用默认的applicationId	2022-05-15 17:16:37 +08:00
heavyrian2012	86d552cd82	管理端口也添加获取应用authCode的方法	2022-05-15 15:07:51 +08:00
heavyrian2012	391f7345c0	add authcode and config api for open platform	2022-05-15 10:19:07 +08:00
heavyrian2012	92fa40f1fd	添加server api和机器人api获取机器人信息的接口	2022-05-13 14:38:26 +08:00
heavyrian2012	3b3c05260c	频道automic状态为1所有消息都不发送到owner，无论callback是否存在	2022-05-12 08:47:26 +08:00
heavyrian2012	4e9cf86302	机器人和频道回调消息带上messageid和时间戳	2022-05-11 09:28:06 +08:00
heavyrian2012	cbb89bbfb5	解决删除用户时，没有回调取消订阅通知的问题	2022-05-07 09:16:15 +08:00
heavyrian2012	537221b0b4	add application token	2022-05-02 22:07:54 +08:00
heavyrian2012	9d23f9c996	优化频道订阅关系缓存逻辑	2022-05-02 11:12:19 +08:00
heavyrian2012	6a25a83857	删除用户或删除频道时，删除对于的订阅关系	2022-05-02 11:05:56 +08:00
heavyrian2012	d0e533ad21	channel add member index	2022-05-02 10:57:46 +08:00
heavyrian2012	cd0e07f32d	优化sql语句	2022-05-01 12:14:07 +08:00
heavyrian2012	a6869c9072	消息表添加会话索引	2022-04-30 21:30:06 +08:00
heavyrian2012	03b3bb2093	同步专业版数据库及错误码	2022-04-30 08:01:45 +08:00
heavyrian2012	304192e303	version 0.87	2022-04-27 18:42:34 +08:00
heavyrian2012	9490226757	update	2022-04-26 20:12:52 +08:00
heavyrian2012	c44062855b	添加获取单条消息的接口	2022-04-26 20:05:35 +08:00
heavyrian2012	9d96fe927f	添加配置，当删除用户时是否保留用户昵称	2022-04-26 19:50:53 +08:00
heavyrian2012	ef21bd6db3	update readme	2022-04-05 15:26:33 +08:00
imndx	dc0b718083	Update README.md	2022-04-01 09:12:05 +08:00
heavyrian2012	c0703332d6	在线状态	2022-03-24 09:49:18 +08:00
heavyrian2012	def048836f	在线状态	2022-03-24 08:38:33 +08:00
heavyrian2012	806cd440e3	修正在线状态问题	2022-03-23 21:45:27 +08:00
heavyrian2012	a3f2623d7e	处理disconnect的在线状态	2022-03-23 19:55:58 +08:00
heavyrian2012	4bc5fd6bb9	version 0.86	2022-03-20 20:34:23 +08:00
heavyrian2012	be2979c9a9	获取在线用户结果的变量改成公开的	2022-03-03 14:31:27 +08:00
heavyrian2012	b7a30e1d14	注释	2022-02-24 21:37:05 +08:00
heavyrian2012	beb591fdc5	version 0.85	2022-02-22 16:16:47 +08:00
heavyrian2012	d090244be9	解决可能内存泄漏的问题	2022-02-22 15:31:50 +08:00
heavyrian2012	22708caaaa	不能反复撤回消息	2022-02-22 15:29:53 +08:00
heavyrain2012	2b24fb9f44	添加conference 服务不可用错误码	2022-02-17 14:55:09 +08:00
heavyrain2012	b8ccab5dde	update version to 0.84	2022-02-11 20:20:55 +08:00
heavyrian2012	9d29357ffa	解决使用内置存储文件上传时内存释放问题	2022-02-09 23:04:51 +08:00
heavyrian2012	dabb92571a	定向消息，如果目标用户多于1人，取第一个保存到数据库中	2022-02-09 22:58:48 +08:00
heavyrian2012	acb4cf81de	version 0.83	2022-01-29 14:03:11 +08:00
heavyrian2012	ace676d215	修改接受好友后通知其他端的问题	2022-01-29 13:47:34 +08:00
heavyrian2012	1170c4209b	fix test code	2022-01-29 11:47:19 +08:00
heavyrian2012	57e8814d9c	同步专业版代码	2022-01-29 11:43:44 +08:00
heavyrian2012	e3d9e0d183	处理好友请求后通知客户端更新好友请求信息	2022-01-26 21:53:35 +08:00
heavyrian2012	d6f5614f49	version 0.82	2022-01-26 13:45:29 +08:00
heavyrian2012	9ed4ab7e08	同步专业版SDK	2022-01-17 19:33:32 +08:00
heavyrian2012	4da3d3421d	sdk中添加更新消息的接口	2022-01-13 20:57:02 +08:00
heavyrain2012	40ef9abd35	销毁用户时，清理干净所有信息	2022-01-08 16:36:18 +08:00
heavyrian2012	6f5b021c89	解决在线逻辑错误问题	2022-01-06 09:56:46 +08:00
heavyrian2012	f8f225d741	version 0.81	2022-01-05 14:31:37 +08:00
imndx	546110f6d3	修复存储用户消息错误问题	2022-01-05 11:26:40 +08:00
heavyrain2012	c7dbf45af6	当关闭pc在线通知时可以清理掉历史在线状态	2021-12-30 16:47:00 +08:00
heavyrain2012	1434dafd36	version 0.80	2021-12-29 21:03:34 +08:00
heavyrain2012	0d8a6e64ea	log4j 2.17.1	2021-12-29 15:09:10 +08:00
heavyrain2012	d96c201aec	add log	2021-12-28 19:30:48 +08:00
heavyrain2012	d901707691	add log	2021-12-28 19:22:55 +08:00
heavyrain2012	f456a4cc65	修正在线状态错误问题	2021-12-26 14:52:23 +08:00
heavyrain2012	c4bd706272	support pad platform	2021-12-26 13:47:01 +08:00
heavyrain2012	503768c04b	获取群组成员信息带上创建时间	2021-12-24 22:19:02 +08:00
heavyrain2012	7ca3abe12d	频道权限问题，非订阅用户可以给全局频道和可以给非订阅用户发消息的频道回复消息	2021-12-24 22:14:04 +08:00
heavyrain2012	cb09026408	添加注释	2021-12-24 22:02:40 +08:00
heavyrain2012	fab381a351	add log	2021-12-24 11:25:47 +08:00
heavyrain2012	a3782b94a8	version	2021-12-23 10:04:17 +08:00
heavyrain2012	3c5ba7f1fa	log4j 升级到log4j2	2021-12-23 10:03:36 +08:00
heavyrain2012	24e95ea4db	加入聊天室判断聊天室是否销毁	2021-12-22 10:27:08 +08:00
heavyrain2012	f96f202b58	销毁聊天室时，清理聊天室相关数据	2021-12-22 10:25:31 +08:00
heavyrain2012	29a53955b6	敏感词过滤跳过链接	2021-12-22 09:58:28 +08:00
heavyrain2012	bf081cd416	修改user setting key字段的长度	2021-12-20 08:53:33 +08:00
heavyrain2012	a074b9eac3	频道API发送消息时，如果是自动处理就不发送给频道owner	2021-12-17 21:24:56 +08:00
				`@@ -0,0 +1 @@`
				alter table `t_user_setting` modify column `_key` varchar(128) NOT NULL;
				`@@ -0,0 +1 @@`
				alter table `t_messages` add INDEX `messages_conv_index` ( `_type`, `_target`, `_line`);
				`@@ -0,0 +1 @@`
				alter table `t_channel_listener` add INDEX `channel_mid_index` ( `_mid`);
				`@@ -0,0 +1 @@`
				alter table `t_channel` add column `_menu` BLOB DEFAULT NULL;