v3.25.8

go 1.25
rm some config save
2026-05-07 13:52:14 +08:00 · 2026-04-01 15:33:30 +08:00 · 2025-12-10 16:50:26 +08:00 · 2025-12-10 16:49:01 +08:00 · 2025-12-10 16:47:16 +08:00 · 2025-12-10 16:45:34 +08:00
87 changed files with 10088 additions and 3442 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,8 @@
 __debug_bin
 __debug_bin.exe
 # .vscode
-test/
 openp2p.exe*
 *.log*
-go.sum
 *.tar.gz
 *.zip
 *.exe
@@ -15,4 +13,16 @@ libs/
 openp2p.app.jks
 openp2p.aar
 openp2p-sources.jar
-build.gradle
+wintun/
+wintun.dll
+.vscode/
+app/.idea/
+*_debug_bin*
+cmd/openp2p
+vendor/
+config.json
+openp2p
+lib/openp2p.dll
+cmd/config.json0
+test/docker/Dockerfile
+test/docker/get-client.sh
--- a/Changelog.md
+++ b/Changelog.md
@@ -0,0 +1,60 @@
+ChangeLog
+
+v3.25.8更新 (2026.3.13)
+Feature
+1. web控制台可以修改公网监听端口
+1. 可以修改虚拟网络网段
+1. 回滚至go1.20因为需要支持老版本的macos和windows
+
+Issue
+1. 修复客户端重装后强制v6连接失效bug
+
+
+v3.25.4更新 (2026.2.9)
+Feature
+1. 优化websocket读数据卡死问题
+1. 优化睡眠唤醒客户端恢复慢问题
+
+Issue
+1. 修复获取ifconfig异常
+1. 修复数据同步异常导致设备间连接失败
+1. 修复底层连接潜在发送数据不完整问题
+
+v3.24.33更新 (2025.12.10)
+Feature
+1. 安装和升级下载文件到临时目录
+1. openwrt默认100k日志文件
+1. 使用系统dns失败时将使用223.5.5.5和8.8.8.8，安卓和部分系统有dns问题
+1. IPv6刷新时上报到服务器
+1. 设备间连接可以设置强制使用v6
+1. 编译环境使用go1.25
+
+Issue
+1. 修复加载系统证书池bug
+1. 修复初始化时崩溃
+1. 修复安卓处理多个网络资源bug
+1. 修复端口转发编辑目标设备bug
+1. 修复某些特殊情况IPv6直连失败
+
+v3.24.23更新 (2025.9.4)
+Feature
+1. 公网UDP直连
+1. upnp定期续期
+1. 支持边缘服务器
+1. 优化mp分配算法
+1. 公网IP不变不再检测nat类型
+
+Issue
+1. 修复客户端某些特殊情况卡死bug
+1. 修复wintun mtu不生效bug，增加缓冲区大小
+1. 修复广播bug
+1. 修复配置文件清空bug
+
+v3.24.13更新 (2025.6.4)
+Feature
+1. 虚拟网卡状态上报
+1. OpenWrt自动安装tun
+1. docker容器运行路径改为/usr/local/openp2p/
+
+Issue
+1. 优化客户端卡死问题
--- a/40
+++ b/40
@@ -1,21 +1,21 @@
-MIT License
-
-Copyright (c) 2021 OpenP2P.cn
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+MIT License
+
+Copyright (c) 2021 OpenP2P.cn
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
--- a/README-ZH.md
+++ b/README-ZH.md
@@ -19,9 +19,9 @@

 [查看详细](#安全性)
 ### 4. 轻量
-文件大小2MB+，运行内存2MB+；全部在应用层实现，没有虚拟网卡，没有内核程序
+文件大小不到10MB，cpu占用极低；它可以仅跑在应用层，或者配合kmod-tun/wintun驱动使用组网功能
 ### 5. 跨平台
-因为轻量，所以很容易支持各个平台。支持主流的操作系统：Windows,Linux,MacOS；和主流的cpu架构：386、amd64、arm、arm64、mipsle、mipsle64、mips、mips64
+因为轻量，所以很容易支持各个平台。支持主流的操作系统：Windows,Linux,MacOS；和主流的cpu架构：386、amd64、arm、arm64、mipsle、mipsle64、mips、mips64、s390x、ppc64le
 ### 6. 高效
 P2P直连可以让你的设备跑满带宽。不论你的设备在任何网络环境，无论NAT1-4（Cone或Symmetric），UDP或TCP打洞,UPNP,IPv6都支持。依靠Quic协议优秀的拥塞算法，能在糟糕的网络环境获得高带宽低延时。

@@ -31,13 +31,13 @@ P2P直连可以让你的设备跑满带宽。不论你的设备在任何网络
 ## 快速入门
 仅需简单4步就能用起来。  
 下面是一个远程办公例子：在家里连入办公室Windows电脑。  
-（另外一个快速入门视频 https://www.bilibili.com/video/BV1Et4y1P7bF/）
+（另外一个快速入门视频 <https://www.bilibili.com/video/BV1Et4y1P7bF/>）
 ### 1.注册
-前往<https://console.openp2p.cn> 注册新用户，暂无需任何认证
+前往<https://console.openp2p.cn> 使用邮箱注册新用户，暂无需任何认证

   ![image](/doc/images/register.png)
 ### 2.安装
-分别在本地和远程电脑下载后双击运行，一键安装
+分别在本地和远程电脑下载后双击运行，一键安装(如果是windows用户,在浏览器下载后请勿修改文件名!!!)

   ![image](/doc/images/install.png)
   
@@ -46,7 +46,7 @@ Windows默认会阻止没有花钱买它家证书签名过的程序，选择“
   ![image](/doc/images/win10warn.png)

   ![image](/doc/images/stillrun.png)
-### 3.新建P2P应用
+### 3.新建端口转发(P2PApp)

 ![image](/doc/images/devices.png)

@@ -54,12 +54,12 @@ Windows默认会阻止没有花钱买它家证书签名过的程序，选择“

 ![image](/doc/images/newappedit.png)

-### 4.使用P2P应用
-在“MyHomePC”设备上能看到刚才创建的P2P应用，连接下图显示的“本地监听端口”即可。
+### 4.使用端口转发(P2PApp)
+在“MyHomePC2”设备上能看到刚才创建的端口转发(P2PApp)，连接下图显示的“本地监听端口”即可。

 ![image](/doc/images/p2pappok.png)

-在家里Windows电脑，按Win+R输入mstsc打开远程桌面，输入127.0.0.1:23389 /admin  
+在MyHomePC2电脑上，按Win+R输入mstsc打开远程桌面，输入127.0.0.1:23389 /admin  

   ![image](/doc/images/mstscconnect.png)

@@ -82,8 +82,8 @@ Windows默认会阻止没有花钱买它家证书签名过的程序，选择“
 ![image](/doc/images/prototype.png)
 ### 客户端架构
 ![image](/doc/images/architecture.png)
-### P2PApp
-它是项目里最重要的概念，一个P2PApp就是把远程的一个服务（mstsc/ssh等）通过P2P网络映射到本地监听。二次开发或者我们提供的Restful API，主要工作就是管理P2PApp
+### 端口转发(P2PApp)
+它是项目里最重要的概念，一个端口转发(P2PApp)就是把远程的一个服务（mstsc/ssh等）通过P2P网络映射到本地监听。二次开发或者我们提供的Restful API，主要工作就是管理端口转发(P2PApp)
 ![image](/doc/images/appdetail.png)
 ## 安全性
 加入OpenP2P共享网络的节点，只能凭授权访问。共享节点只会中转数据，别人无法访问内网任何资源。
@@ -96,7 +96,7 @@ Windows默认会阻止没有花钱买它家证书签名过的程序，选择“
 服务端有个调度模型，根据带宽、ping值、稳定性、服务时长，尽可能地使共享节点均匀地提供服务。连接共享节点使用TOTP密码，hmac-sha256算法校验，它是一次性密码，和我们平时使用的手机验证码或银行密码器一样的原理。

 ## 编译
-go version go1.18.1+  
+go version 1.20 only (支持win7) 
 cd到代码根目录，执行
 ```
 make
@@ -123,18 +123,20 @@ CGO_ENABLED=0 env GOOS=linux GOARCH=amd64 go build -o openp2p --ldflags '-s -w '
 1. ~~支持IPv6~~(100%)
 2. ~~支持随系统自动启动，安装成系统服务~~(100%)
 3. ~~提供一些免费服务器给特别差的网络，如广电网络~~(100%)
-4. ~~建立网站，用户可以在网站管理所有P2PApp和设备。查看设备在线状态，升级，增删查改重启P2PApp等~~(100%)
-5. 建立公众号，用户可在微信公众号管理所有P2PApp和设备
+4. ~~建立网站，用户可以在网站管理所有端口转发(P2PApp)和设备。查看设备在线状态，升级，增删查改重启端口转发(P2PApp)等~~(100%)
+5. 建立公众号，用户可在微信公众号管理所有端口转发(P2PApp)和设备
 6. 客户端提供WebUI
 7. ~~支持自有服务器，开源服务器程序~~(100%)
 8. 共享节点调度模型优化，对不同的运营商优化
-9. 方便二次开发，提供API和lib
+9. ~~方便二次开发，提供API和lib~~(100%)
 10. ~~应用层支持UDP协议，实现很简单，但UDP应用较少暂不急~~(100%)
-11. 底层通信支持KCP协议，目前仅支持Quic；KCP专门对延时优化，被游戏加速器广泛使用，可以牺牲一定的带宽降低延时
+11. ~~底层通信支持KCP协议，目前仅支持Quic；KCP专门对延时优化，被游戏加速器广泛使用，可以牺牲一定的带宽降低延时~~(100%)
 12. ~~支持Android系统，让旧手机焕发青春变成移动网关~~(100%)
-13. 支持Windows网上邻居共享文件
-14. 内网直连优化，用处不大，估计就用户测试时用到
+13. ~~支持Windows网上邻居共享文件~~(100%)
+14. ~~内网直连优化~~(100%)
 15. ~~支持UPNP~~(100%)
+16. ~~支持Android~~(100%)
+17. 支持IOS

 远期计划：
 1. 利用区块链技术去中心化，让共享设备的用户有收益，从而促进更多用户共享，达到正向闭环。
--- a/README.md
+++ b/README.md
@@ -19,10 +19,10 @@ The code is open source, the P2P tunnel uses TLS1.3+AES double encryption, and t
 [details](#Safety)

 ### 4. Lightweight
-2MB+ filesize, 2MB+ memory. It runs at appllication layer, no vitrual NIC, no kernel driver.
+10MB filesize, Extremely low CPU usage. It could only runs at application layer, or uses kmod-tun/wintun driver for SDWAN.

 ### 5. Cross-platform
-Benefit from lightweight, it easily supports most of major OS, like Windows, Linux, MacOS, also most of CPU architecture, like 386、amd64、arm、arm64、mipsle、mipsle64、mips、mips64.
+Benefit from lightweight, it easily supports most of major OS, like Windows, Linux, MacOS, also most of CPU architecture, like 386、amd64、arm、arm64、mipsle、mipsle64、mips、mips64、s390x、ppc64le.

 ### 6. Efficient
 P2P direct connection lets your devices make good use of bandwidth.  Your device can be connected in any network environments, even supports NAT1-4 (Cone or Symmetric),UDP or TCP punching,UPNP,IPv6.  Relying on the excellent congestion algorithm of the Quic protocol, high bandwidth and low latency can be obtained in a bad network environment.
@@ -35,11 +35,11 @@ Just 4 simple steps to use.
 Here's an example of remote work: connecting to an office Windows computer at home.
 (Another quick started vedio https://www.bilibili.com/video/BV1Et4y1P7bF/)
 ### 1.Register
-Go to <https://console.openp2p.cn> register a new user
+Go to <https://console.openp2p.cn> register a new user using email

   ![image](/doc/images/register_en.png)
 ### 2.Install
-Download on local and remote computers and double-click to run, one-click installation
+Download on local and remote computers and double-click to run, one-click installation (Windows user, please do not modify the file name after downloading in the browser!!!)

   ![image](/doc/images/install_en.png)

@@ -49,7 +49,7 @@ By default, Windows will block programs that have not been signed by the Microso

   ![image](/doc/images/stillrun_en.png)
   
-### 3.New P2PApp
+### 3.New Port ForWard (P2PApp)

 ![image](/doc/images/devices_en.png)

@@ -57,12 +57,12 @@ By default, Windows will block programs that have not been signed by the Microso

 ![image](/doc/images/newappedit_en.png)

-### 4.Use P2PApp
-You can see the P2P application you just created on the "MyHomePC" device, just connect to the "local listening port" shown in the figure below.
+### 4.Use Port ForWard (P2PApp)
+You can see the P2P application you just created on the "MyHomePC2" device, just connect to the "local listening port" shown in the figure below.

 ![image](/doc/images/p2pappok_en.png)

-On MyHomePC, press Win+R and enter MSTSC to open the remote desktop, input `127.0.0.1:23389 /admin`
+On MyHomePC2, press Win+R and enter MSTSC to open the remote desktop, input `127.0.0.1:23389 /admin`

   ![image](/doc/images/mstscconnect_en.png)

@@ -86,8 +86,8 @@ Especially suitable for large traffic intranet access.
 ![image](/doc/images/prototype.png)
 ### Client architecture
 ![image](/doc/images/architecture.png)
-### P2PApp
-P2PAPP is the most import concept in this project, one P2PApp is able to map the remote service(mstsc/ssh) to the local listening. The main job of re-development or restful API we provide is to manage P2PApp.
+### Port ForWard (P2PApp)
+Port ForWard (P2PApp) is the most import concept in this project, one Port ForWard (P2PApp) is able to map the remote service(mstsc/ssh) to the local listening. The main job of re-development or restful API we provide is to manage Port ForWard (P2PApp).

 ![image](/doc/images/appdetail.png)

@@ -103,7 +103,7 @@ That's right, the relay node is naturally an man-in-middle, so AES encryption is
 The server side has a scheduling model, which calculate  bandwith, ping value,stability and service duration to provide a well-proportioned service to every share node. It uses TOTP(Time-based One-time Password) with hmac-sha256 algorithem, its theory as same as the cellphone validation code or bank cipher coder.

 ## Build
-go version go1.18.1+  
+go version 1.20 only (support win7)
 cd root directory of the socure code and execute
 ```
 make
@@ -131,19 +131,20 @@ Short-Term:
 1. ~~Support IPv6.~~(100%)
 2. ~~Support auto run when system boot, setup system service.~~(100%)
 3. ~~Provide free servers to some low-performance network.~~(100%)
-4. ~~Build website, users can manage all P2PApp and devices via it. View devices' online status, upgrade, restart or CURD P2PApp .~~(100%)
-5. Provide wechat official account, user can manage P2PApp nodes and deivce as same as website.
+4. ~~Build website, users can manage all Port ForWard (P2PApp) and devices via it. View devices' online status, upgrade, restart or CURD Port ForWard (P2PApp) .~~(100%)
+5. Provide wechat official account, user can manage Port ForWard (P2PApp) nodes and deivce as same as website.
 6. Provide WebUI on client side.
 7. ~~Support private server, open source server program.~~(100%)
 8. Optimize our share scheduling model for different network operators.
-9. Provide REST APIs and libary for secondary development.
+9. ~~Provide REST APIs and libary for secondary development.~~(100%)
 10. ~~Support UDP at application layer, it is easy to implement but not urgent due to only a few applicaitons using UDP protocol.~~(100%)
-11. Support KCP protocol underlay, currently support Quic only. KCP focus on delay optimization,which has been widely used as game accelerator,it can sacrifice part of bandwidth to reduce timelag. 
+11. ~~Support KCP protocol underlay, currently support Quic only. KCP focus on delay optimization,which has been widely used as game accelerator,it can sacrifice part of bandwidth to reduce timelag. ~~(100%)
 12. ~~Support Android platform, let the phones to be mobile gateway.~~(100%)
-13. Support SMB Windows neighborhood.
-14. Direct connection on intranet, for testing.
+13. ~~Support SMB Windows neighborhood.~~(100%)
+14. ~~Direct connection on intranet, for testing.~~(100%)
 15. ~~Support UPNP.~~(100%)
-
+16. ~~Support Android~~(100%)
+17. Support IOS

 Long-Term:
 1. Use blockchain technology to decentralize, so that users who share equipment have benefits, thereby promoting more users to share, and achieving a positive closed loop.
@@ -161,3 +162,5 @@ Email: openp2p.cn@gmail.com tenderiron@139.com
 ## Disclaimer
 This project is open source for everyone to learn and use for free. It is forbidden to be used for illegal purposes. Any loss caused by improper use of this project or accident, this project and related personnel will not bear any responsibility. 

+## Thanks
+[![Powered by DartNode](https://dartnode.com/branding/DN-Open-Source-sm.png)](https://dartnode.com "Powered by DartNode - Free VPS for Open Source")
--- a/USAGE-ZH.md
+++ b/USAGE-ZH.md
@@ -1,99 +1,108 @@
-# 手动运行说明
-大部分情况通过<https://console.openp2p.cn> 操作即可。有些情况需要手动运行  
-> :warning: 本文所有命令, Windows环境使用"openp2p.exe", Linux环境使用"./openp2p"
-
-
-## 安装和监听
-```
-./openp2p install -node OFFICEPC1 -token TOKEN  
-或
-./openp2p -d -node OFFICEPC1 -token TOKEN  
-# 注意Windows系统把“./openp2p” 换成“openp2p.exe”
-```
->* install: 安装模式【推荐】，会安装成系统服务，这样它就能随系统自动启动
->* -d: daemon模式。发现worker进程意外退出就会自动启动新的worker进程
->* -node: 独一无二的节点名字，唯一标识
->* -token: 在<console.openp2p.cn>“我的”里面找到
->* -sharebandwidth: 作为共享节点时提供带宽，默认10mbps. 如果是光纤大带宽，设置越大效果越好. 0表示不共享，该节点只在私有的P2P网络使用。不加入共享的P2P网络，这样也意味着无法使用别人的共享节点
->* -loglevel: 需要查看更多调试日志，设置0；默认是1
-
-### 在docker容器里运行openp2p
-我们暂时还没提供官方docker镜像，你可以在随便一个容器里运行
-```
-nohup ./openp2p -d -node OFFICEPC1 -token TOKEN  &
-#这里由于一般的镜像都精简过，install系统服务会失败，所以使用直接daemon模式后台运行
-```
-## 连接
-```
-./openp2p -d -node HOMEPC123 -token TOKEN -appname OfficeWindowsRemote -peernode OFFICEPC1 -dstip 127.0.0.1 -dstport 3389 -srcport 23389
-使用配置文件，建立多个P2PApp
-./openp2p -d   
-```
->* -appname: 这个P2P应用名字
->* -peernode: 目标节点名字
->* -dstip: 目标服务地址，默认本机127.0.0.1
->* -dstport: 目标服务端口，常见的如windows远程桌面3389，Linux ssh 22
->* -protocol: 目标服务协议 tcp、udp
-
-## 配置文件
-一般保存在当前目录，安装模式下会保存到 `C:\Program Files\OpenP2P\config.json` 或 `/usr/local/openp2p/config.json`
-希望修改参数，或者配置多个P2PApp可手动修改配置文件
-
-配置实例
-```
-{
-  "network": {
-    "Node": "hhd1207-222",
-    "Token": "TOKEN",
-    "ShareBandwidth": 0,
-    "ServerHost": "api.openp2p.cn",
-    "ServerPort": 27183,
-    "UDPPort1": 27182,
-    "UDPPort2": 27183
-  },
-  "apps": [
-    {
-      "AppName": "OfficeWindowsPC",
-      "Protocol": "tcp",
-      "SrcPort": 23389,
-      "PeerNode": "OFFICEPC1",
-      "DstPort": 3389,
-      "DstHost": "localhost",
-    },
-    {
-      "AppName": "OfficeServerSSH",
-      "Protocol": "tcp",
-      "SrcPort": 22,
-      "PeerNode": "OFFICEPC1",
-      "DstPort": 22,
-      "DstHost": "192.168.1.5",
-    }
-  ]
-}
-```
-
-## 升级客户端
-```
-# update local client
-./openp2p update  
-# update remote client
-curl --insecure 'https://api.openp2p.cn:27183/api/v1/device/YOUR-NODE-NAME/update?user=&password='
-```
-
-Windows系统需要设置防火墙放行本程序，程序会自动设置，如果设置失败会影响连接功能。
-Linux系统（Ubuntu和CentOS7）的防火墙默认配置均不会有影响，如果不行可尝试关闭防火墙
-```
-systemctl stop firewalld.service
-systemctl start firewalld.service
-firewall-cmd --state
-```
-
-## 卸载
-```
-./openp2p uninstall
-# 已安装时
-# windows
-C:\Program Files\OpenP2P\openp2p.exe uninstall
-# linux,macos
-sudo /usr/local/openp2p/openp2p uninstall
-```
+# 手动运行说明
+大部分情况通过<https://console.openp2p.cn> 操作即可。有些情况需要手动运行  
+> :warning: 本文所有命令, Windows环境使用"openp2p.exe", Linux环境使用"./openp2p"
+
+
+## 安装和监听
+```
+./openp2p install -node OFFICEPC1 -token TOKEN  
+或
+./openp2p -d -node OFFICEPC1 -token TOKEN  
+# 注意Windows系统把“./openp2p” 换成“openp2p.exe”
+```
+>* install: 安装模式【推荐】，会安装成系统服务，这样它就能随系统自动启动
+>* -d: daemon模式。发现worker进程意外退出就会自动启动新的worker进程
+>* -node: 独一无二的节点名字，唯一标识
+>* -token: 在<console.openp2p.cn>“我的”里面找到
+>* -sharebandwidth: 作为共享节点时提供带宽，默认10mbps. 如果是光纤大带宽，设置越大效果越好. 0表示不共享，该节点只在私有的P2P网络使用。不加入共享的P2P网络，这样也意味着无法使用别人的共享节点
+>* -loglevel: 需要查看更多调试日志，设置0；默认是1
+
+### 在docker容器里运行openp2p
+我们暂时还没提供官方docker镜像，你可以在随便一个容器里运行
+```
+nohup ./openp2p -d -node OFFICEPC1 -token TOKEN  &
+#这里由于一般的镜像都精简过，install系统服务会失败，所以使用直接daemon模式后台运行
+```
+## 连接
+```
+./openp2p -d -node HOMEPC123 -token TOKEN -appname OfficeWindowsRemote -peernode OFFICEPC1 -dstip 127.0.0.1 -dstport 3389 -srcport 23389
+使用配置文件，建立多个P2PApp
+./openp2p -d   
+```
+>* -appname: 这个P2P应用名字
+>* -peernode: 目标节点名字
+>* -dstip: 目标服务地址，默认本机127.0.0.1
+>* -dstport: 目标服务端口，常见的如windows远程桌面3389，Linux ssh 22
+>* -protocol: 目标服务协议 tcp、udp
+
+## 配置文件
+一般保存在当前目录，安装模式下会保存到 `C:\Program Files\OpenP2P\config.json` 或 `/usr/local/openp2p/config.json`
+希望修改参数，或者配置多个P2PApp可手动修改配置文件
+
+配置实例
+```
+{
+  "network": {
+    "Node": "YOUR-NODE-NAME",
+    "Token": "TOKEN",
+    "ShareBandwidth": 0,
+    "ServerHost": "api.openp2p.cn",
+    "ServerPort": 27183,
+    "UDPPort1": 27182,
+    "UDPPort2": 27183
+  },
+  "apps": [
+    {
+      "AppName": "OfficeWindowsPC",
+      "Protocol": "tcp",
+      "SrcPort": 23389,
+      "PeerNode": "OFFICEPC1",
+      "DstPort": 3389,
+      "DstHost": "localhost",
+    },
+    {
+      "AppName": "OfficeServerSSH",
+      "Protocol": "tcp",
+      "SrcPort": 22,
+      "PeerNode": "OFFICEPC1",
+      "DstPort": 22,
+      "DstHost": "192.168.1.5",
+    }
+  ]
+}
+```
+
+## 升级客户端
+```
+# update local client
+./openp2p update  
+# update remote client
+curl --insecure 'https://api.openp2p.cn:27183/api/v1/device/YOUR-NODE-NAME/update?user=&password='
+```
+
+Windows系统需要设置防火墙放行本程序，程序会自动设置，如果设置失败会影响连接功能。
+Linux系统（Ubuntu和CentOS7）的防火墙默认配置均不会有影响，如果不行可尝试关闭防火墙
+```
+systemctl stop firewalld.service
+systemctl start firewalld.service
+firewall-cmd --state
+```
+## 停止
+TODO: windows linux macos
+## 卸载
+```
+./openp2p uninstall
+# 已安装时
+# windows
+C:\Program Files\OpenP2P\openp2p.exe uninstall
+# linux,macos
+sudo /usr/local/openp2p/openp2p uninstall
+```
+
+## Docker运行
+```
+# 把YOUR-TOKEN和YOUR-NODE-NAME替换成自己的
+docker run -d --restart=always --net host --name openp2p-client -e OPENP2P_TOKEN=YOUR-TOKEN -e OPENP2P_NODE=YOUR-NODE-NAME  openp2pcn/openp2p-client:latest 
+OR
+docker run -d --restart=always --net host --name openp2p-client  openp2pcn/openp2p-client:latest -token YOUR-TOKEN -node YOUR-NODE-NAME
+```
--- a/USAGE.md
+++ b/USAGE.md
@@ -1,101 +1,109 @@
-
-
-# Parameters details
-In most cases, you can operate it through <https://console.openp2p.cn>. In some cases it is necessary to run manually
-> :warning: all commands in this doc, Windows env uses "openp2p.exe", Linux env uses "./openp2p" 
-
-
-## Install and Listen
-```
-./openp2p install -node OFFICEPC1 -token TOKEN  
-Or
-./openp2p -d -node OFFICEPC1 -token TOKEN  
-
-```
->* install: [recommand] will install as system service. So it will autorun when system booting.
->* -d: daemon mode run once. When the worker process is found to exit unexpectedly, a new worker process will be automatically started
->* -node: Unique node name, unique identification
->* -token: See <console.openp2p.cn> "Profile"
->* -sharebandwidth: Provides bandwidth when used as a shared node, the default is 10mbps. If it is a large bandwidth of optical fiber, the larger the setting, the better the effect. 0 means not shared, the node is only used in a private P2P network. Do not join the shared P2P network, which also means that you CAN NOT use other people’s shared nodes
->* -loglevel: Need to view more debug logs, set 0; the default is 1
-
-### Run in Docker container
-We don't provide official docker image yet, you can run it in any container
-```
-nohup ./openp2p -d -node OFFICEPC1 -token TOKEN  &
-# Since many docker images have been simplified, the install system service will fail, so the daemon mode is used to run in the background
-```
-
-## Connect
-```
-./openp2p -d -node HOMEPC123 -token TOKEN -appname OfficeWindowsRemote -peernode OFFICEPC1 -dstip 127.0.0.1 -dstport 3389 -srcport 23389
-Create multiple P2PApp by config file
-./openp2p -d    
-```
->* -appname: This P2PApp name
->* -peernode: Target node name
->* -dstip: Target service address, default local 127.0.0.1
->* -dstport: Target service port, such as windows remote desktop 3389, Linux ssh 22
->* -protocol: Target service protocol tcp, udp
-
-## Config file
-Generally saved in the current directory, in installation mode it will be saved to `C:\Program Files\OpenP2P\config.json` or `/usr/local/openp2p/config.json`
-If you want to modify the parameters, or configure multiple P2PApps, you can manually modify the configuration file
-
-Configuration example
-```
-{
-  "network": {
-    "Node": "hhd1207-222",
-    "Token": "TOKEN",
-    "ShareBandwidth": 0,
-    "ServerHost": "api.openp2p.cn",
-    "ServerPort": 27183,
-    "UDPPort1": 27182,
-    "UDPPort2": 27183
-  },
-  "apps": [
-    {
-      "AppName": "OfficeWindowsPC",
-      "Protocol": "tcp",
-      "SrcPort": 23389,
-      "PeerNode": "OFFICEPC1",
-      "DstPort": 3389,
-      "DstHost": "localhost",
-    },
-    {
-      "AppName": "OfficeServerSSH",
-      "Protocol": "tcp",
-      "SrcPort": 22,
-      "PeerNode": "OFFICEPC1",
-      "DstPort": 22,
-      "DstHost": "192.168.1.5",
-    }
-  ]
-}
-```
-## Client update
-```
-# update local client
-./openp2p update  
-# update remote client
-curl --insecure 'https://api.openp2p.cn:27183/api/v1/device/YOUR-NODE-NAME/update?user=&password='
-```
-
-Windows system needs to set up firewall for this program, the program will automatically set the firewall, if the setting fails, the UDP punching will be affected.  
-The default firewall configuration of Linux system (Ubuntu and CentOS7) will not have any effect, if not, you can try to turn off the firewall
-```
-systemctl stop firewalld.service
-systemctl start firewalld.service
-firewall-cmd --state
-```
-
-## Uninstall
-```
-./openp2p uninstall
-# when already installed
-# windows
-C:\Program Files\OpenP2P\openp2p.exe uninstall
-# linux,macos
-sudo /usr/local/openp2p/openp2p uninstall
+
+
+# Parameters details
+In most cases, you can operate it through <https://console.openp2p.cn>. In some cases it is necessary to run manually
+> :warning: all commands in this doc, Windows env uses "openp2p.exe", Linux env uses "./openp2p" 
+
+
+## Install and Listen
+```
+./openp2p install -node OFFICEPC1 -token TOKEN  
+Or
+./openp2p -d -node OFFICEPC1 -token TOKEN  
+
+```
+>* install: [recommand] will install as system service. So it will autorun when system booting.
+>* -d: daemon mode run once. When the worker process is found to exit unexpectedly, a new worker process will be automatically started
+>* -node: Unique node name, unique identification
+>* -token: See <console.openp2p.cn> "Profile"
+>* -sharebandwidth: Provides bandwidth when used as a shared node, the default is 10mbps. If it is a large bandwidth of optical fiber, the larger the setting, the better the effect. 0 means not shared, the node is only used in a private P2P network. Do not join the shared P2P network, which also means that you CAN NOT use other people’s shared nodes
+>* -loglevel: Need to view more debug logs, set 0; the default is 1
+
+### Run in Docker container
+We don't provide official docker image yet, you can run it in any container
+```
+nohup ./openp2p -d -node OFFICEPC1 -token TOKEN  &
+# Since many docker images have been simplified, the install system service will fail, so the daemon mode is used to run in the background
+```
+
+## Connect
+```
+./openp2p -d -node HOMEPC123 -token TOKEN -appname OfficeWindowsRemote -peernode OFFICEPC1 -dstip 127.0.0.1 -dstport 3389 -srcport 23389
+Create multiple P2PApp by config file
+./openp2p -d    
+```
+>* -appname: This P2PApp name
+>* -peernode: Target node name
+>* -dstip: Target service address, default local 127.0.0.1
+>* -dstport: Target service port, such as windows remote desktop 3389, Linux ssh 22
+>* -protocol: Target service protocol tcp, udp
+
+## Config file
+Generally saved in the current directory, in installation mode it will be saved to `C:\Program Files\OpenP2P\config.json` or `/usr/local/openp2p/config.json`
+If you want to modify the parameters, or configure multiple P2PApps, you can manually modify the configuration file
+
+Configuration example
+```
+{
+  "network": {
+    "Node": "YOUR-NODE-NAME",
+    "Token": "TOKEN",
+    "ShareBandwidth": 0,
+    "ServerHost": "api.openp2p.cn",
+    "ServerPort": 27183,
+    "UDPPort1": 27182,
+    "UDPPort2": 27183
+  },
+  "apps": [
+    {
+      "AppName": "OfficeWindowsPC",
+      "Protocol": "tcp",
+      "SrcPort": 23389,
+      "PeerNode": "OFFICEPC1",
+      "DstPort": 3389,
+      "DstHost": "localhost",
+    },
+    {
+      "AppName": "OfficeServerSSH",
+      "Protocol": "tcp",
+      "SrcPort": 22,
+      "PeerNode": "OFFICEPC1",
+      "DstPort": 22,
+      "DstHost": "192.168.1.5",
+    }
+  ]
+}
+```
+## Client update
+```
+# update local client
+./openp2p update  
+# update remote client
+curl --insecure 'https://api.openp2p.cn:27183/api/v1/device/YOUR-NODE-NAME/update?user=&password='
+```
+
+Windows system needs to set up firewall for this program, the program will automatically set the firewall, if the setting fails, the UDP punching will be affected.  
+The default firewall configuration of Linux system (Ubuntu and CentOS7) will not have any effect, if not, you can try to turn off the firewall
+```
+systemctl stop firewalld.service
+systemctl start firewalld.service
+firewall-cmd --state
+```
+
+## Uninstall
+```
+./openp2p uninstall
+# when already installed
+# windows
+C:\Program Files\OpenP2P\openp2p.exe uninstall
+# linux,macos
+sudo /usr/local/openp2p/openp2p uninstall
+```
+
+## Run with Docker
+```
+# Replace YOUR-TOKEN and YOUR-NODE-NAME with yours
+docker run -d --net host --name openp2p-client -e OPENP2P_TOKEN=YOUR-TOKEN -e OPENP2P_NODE=YOUR-NODE-NAME  openp2pcn/openp2p-client:latest 
+OR
+docker run -d --net host --name openp2p-client  openp2pcn/openp2p-client:latest -token YOUR-TOKEN -node YOUR-NODE-NAME
 ```
--- a/app/.idea/runConfigurations.xml
+++ b/app/.idea/runConfigurations.xml
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>
--- a/app/README.md
+++ b/app/README.md
@@ -1,7 +1,12 @@
 ## Build
+depends on openjdk 11, gradle 8.1.3, ndk 21
 ```
+
+# latest version not support go1.20
+go install golang.org/x/mobile/cmd/gomobile@7c4916698cc93475ebfea76748ee0faba2deb2a5
+gomobile init
+go get -v golang.org/x/mobile/bind@7c4916698cc93475ebfea76748ee0faba2deb2a5
 cd core
-go get -v golang.org/x/mobile/bind
 gomobile bind -target android -v
 if [[ $? -ne 0 ]]; then
    echo "build error"
@@ -11,6 +16,17 @@ echo "build ok"
 cp openp2p.aar openp2p-sources.jar ../app/app/libs
 echo "copy to APP libs"

+edit app/app/build.gradle 
+```
+signingConfigs {
+        release {
+            storeFile file('YOUR-JKS-PATH')
+            storePassword 'YOUR-PASSWORD'
+            keyAlias 'openp2p.keys'
+            keyPassword 'YOUR-PASSWORD'
+        }
+    }
+```
 cd ../app
 ./gradlew build

--- a/app/app/build.gradle
+++ b/app/app/build.gradle
@@ -0,0 +1,63 @@
+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+}
+
+android {
+    signingConfigs {
+        release {
+            storeFile file('C:\\work\\src\\openp2p-client\\app\\openp2p.jks')
+            storePassword 'YOUR-PASSWORD'
+            keyAlias 'openp2p.keys'
+            keyPassword 'YOUR-PASSWORD'
+        }
+    }
+    compileSdkVersion 31
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "cn.openp2p"
+        minSdkVersion 16
+        targetSdkVersion 31
+        versionCode 1
+        versionName "2718281828"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        namespace "cn.openp2p"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            signingConfig signingConfigs.release
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    buildFeatures {
+        viewBinding true
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: "libs", include: ["*.jar", "*.aar"])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.core:core-ktx:1.3.1'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.2.1'
+    implementation 'androidx.annotation:annotation:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.2.0'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    implementation files('libs\\openp2p-sources.jar')
+}
--- a/app/app/src/main/AndroidManifest.xml
+++ b/app/app/src/main/AndroidManifest.xml
@@ -1,12 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="cn.openp2p">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">

    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <application
        android:allowBackup="true"
@@ -27,13 +26,21 @@

        <activity
            android:name=".ui.login.LoginActivity"
-            android:label="@string/app_name">
+            android:label="@string/app_name"
+            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
+        <receiver android:name="BootReceiver"
+            android:exported="true"
+            android:enabled="true">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED"/>
+            </intent-filter>
+        </receiver>
    </application>

 </manifest>
--- a/app/app/src/main/java/cn/openp2p/BootReceiver.kt
+++ b/app/app/src/main/java/cn/openp2p/BootReceiver.kt
@@ -0,0 +1,27 @@
+package cn.openp2p
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.net.VpnService
+import android.os.Build
+import android.os.Bundle
+import android.util.Log
+import cn.openp2p.ui.login.LoginActivity
+class BootReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+//        Logger.log("pp onReceive "+intent.action.toString())
+        Log.i("onReceive","start "+intent.action.toString())
+        // if (Intent.ACTION_BOOT_COMPLETED == intent.action) {
+        //     Log.i("onReceive","match "+intent.action.toString())
+        //     VpnService.prepare(context)
+        //     val intent = Intent(context, OpenP2PService::class.java)
+        //     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        //         context.startForegroundService(intent)
+        //     } else {
+        //         context.startService(intent)
+        //     }
+        // }
+        Log.i("onReceive","end "+intent.action.toString())
+    }
+}
--- a/app/app/src/main/java/cn/openp2p/OpenP2PService.kt
+++ b/app/app/src/main/java/cn/openp2p/OpenP2PService.kt
@@ -4,9 +4,11 @@ import android.app.*
 import android.content.Context
 import android.content.Intent
 import android.graphics.Color
+import android.net.VpnService
 import android.os.Binder
 import android.os.Build
 import android.os.IBinder
+import android.os.ParcelFileDescriptor
 import android.util.Log
 import androidx.annotation.RequiresApi
 import androidx.core.app.NotificationCompat
@@ -14,11 +16,32 @@ import cn.openp2p.ui.login.LoginActivity
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import openp2p.Openp2p
+import java.io.FileInputStream
+import java.io.FileOutputStream
+import java.nio.ByteBuffer
+import kotlinx.coroutines.*
+import org.json.JSONObject
+import java.io.File
+import java.net.InetAddress
+import java.net.NetworkInterface
+import kotlinx.coroutines.channels.Channel
+import java.nio.channels.FileChannel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+data class Node(val name: String, val ip: String, val resource: String? = null)


-class OpenP2PService : Service() {
+data class Network(
+    val id: Long,
+    val name: String,
+    val gateway: String,
+    val Nodes: List<Node>
+)
+
+class OpenP2PService : VpnService() {
    companion object {
-        private val LOG_TAG = OpenP2PService::class.simpleName
+        private val LOG_TAG = "OpenP2PService"
    }

    inner class LocalBinder : Binder() {
@@ -28,11 +51,18 @@ class OpenP2PService : Service() {
    private val binder = LocalBinder()
    private lateinit var network: openp2p.P2PNetwork
    private lateinit var mToken: String
-    private var running:Boolean =true
+    private var running: Boolean = true
+    private var sdwanRunning: Boolean = false
+    private var vpnInterface: ParcelFileDescriptor? = null
+    private var sdwanJob: Job? = null
+    private val packetQueue = Channel<ByteBuffer>(capacity = 1024)
+    private val serviceScope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+
    override fun onCreate() {
-        Log.i(LOG_TAG, "onCreate - Thread ID = " + Thread.currentThread().id)
-        var channelId: String? = null
-        channelId = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        val logDir = File(getExternalFilesDir(null), "log")
+        Logger.init(logDir)
+        Logger.i(LOG_TAG, "onCreate - Thread ID = " + Thread.currentThread().id)
+        var channelId = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            createNotificationChannel("kim.hsl", "ForegroundService")
        } else {
            ""
@@ -41,12 +71,12 @@ class OpenP2PService : Service() {

        val pendingIntent = PendingIntent.getActivity(
            this, 0,
-            notificationIntent, 0
+            notificationIntent, PendingIntent.FLAG_IMMUTABLE
        )

        val notification = channelId?.let {
            NotificationCompat.Builder(this, it)
-    //            .setSmallIcon(R.mipmap.app_icon)
+                //            .setSmallIcon(R.mipmap.app_icon)
                .setContentTitle("My Awesome App")
                .setContentText("Doing some work...")
                .setContentIntent(pendingIntent).build()
@@ -54,52 +84,308 @@ class OpenP2PService : Service() {

        startForeground(1337, notification)
        super.onCreate()
-
+        refreshSDWAN()
    }

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-        Log.i(
+        Logger.i(
            LOG_TAG,
            "onStartCommand - startId = " + startId + ", Thread ID = " + Thread.currentThread().id
        )
+        startOpenP2P(null)
        return super.onStartCommand(intent, flags, startId)
    }

    override fun onBind(p0: Intent?): IBinder? {
-
        val token = p0?.getStringExtra("token")
-        Log.i(LOG_TAG, "onBind - Thread ID = " + Thread.currentThread().id + token)
-        GlobalScope.launch {
-            network = Openp2p.runAsModule(getExternalFilesDir(null).toString(), token, 0, 1)
-            val isConnect = network.connect(30000)  // ms
-            Log.i(OpenP2PService.LOG_TAG, "login result: " + isConnect.toString());
-            do {
-                Thread.sleep(1000)
-            }while(network.connect(30000)&&running)
-            stopSelf()
-        }
+        Logger.i(LOG_TAG, "onBind token=$token")
+        startOpenP2P(token)
        return binder
    }

+    private fun startOpenP2P(token: String?): Boolean {
+        if (sdwanRunning) {
+            return true
+        }
+
+        Logger.i(LOG_TAG, "startOpenP2P - Thread ID = " + Thread.currentThread().id + token)
+        val oldToken = Openp2p.getToken(getExternalFilesDir(null).toString())
+        Logger.i(LOG_TAG, "startOpenP2P oldtoken=$oldToken newtoken=$token")
+        if (oldToken == "0" && token == null) {
+            return false
+        }
+        sdwanRunning = true
+        //        runSDWAN()
+        GlobalScope.launch {
+            network = Openp2p.runAsModule(
+                getExternalFilesDir(null).toString(),
+                token,
+                0,
+                1
+            ) // /storage/emulated/0/Android/data/cn.openp2p/files/
+            val isConnect = network.connect(30000)  // ms
+            Logger.i(LOG_TAG, "login result: " + isConnect.toString());
+            do {
+                Thread.sleep(1000)
+            } while (network.connect(30000) && running)
+            stopSelf()
+        }
+        return false
+    }
+
+    private fun refreshSDWAN() {
+        GlobalScope.launch {
+            Logger.i(OpenP2PService.LOG_TAG, "refreshSDWAN start");
+            while (true) {
+                Logger.i(OpenP2PService.LOG_TAG, "waiting new sdwan config");
+                val buf = ByteArray(32 * 1024)
+                val buffLen = Openp2p.getAndroidSDWANConfig(buf)
+                Logger.i(OpenP2PService.LOG_TAG, "closing running sdwan instance");
+                sdwanRunning = false
+                vpnInterface?.close()
+                vpnInterface = null
+                sdwanJob?.join()
+                sdwanJob = serviceScope.launch(context = Dispatchers.IO) {
+                    runSDWAN(buf.copyOfRange(0, buffLen.toInt()))
+                }
+            }
+            Logger.i(OpenP2PService.LOG_TAG, "refreshSDWAN end");
+        }
+    }
+
+    private suspend fun readTunLoop() {
+        val inputStream = FileInputStream(vpnInterface?.fileDescriptor).channel
+        if (inputStream == null) {
+            Logger.i(OpenP2PService.LOG_TAG, "open FileInputStream error: ");
+            return
+        }
+        Logger.i(LOG_TAG, "read tun loop start")
+        val buffer = ByteBuffer.allocate(4096)
+        val byteArrayRead = ByteArray(4096)
+        while (sdwanRunning) {
+            buffer.clear()
+            withContext(Dispatchers.IO) {
+                val readBytes = inputStream.read(buffer)
+                if (readBytes > 0) {
+                    buffer.flip()
+                    buffer.get(byteArrayRead, 0, readBytes)
+                    // Logger.i(OpenP2PService.LOG_TAG, String.format("Openp2p.androidRead: %d", readBytes))
+                    Openp2p.androidRead(byteArrayRead, readBytes.toLong())
+                    // Logger.i(OpenP2PService.LOG_TAG, "inputStream.read error: ")
+                } else {
+                    delay(50)
+                }
+            }
+        }
+        Logger.i(LOG_TAG, "read tun loop end")
+    }
+
+
+    private suspend fun runSDWAN(buf: ByteArray) {
+//        val localIps = listOf(
+//            "fe80::14b6:a0ff:fe3e:64de" to 64,
+//            "192.168.100.184" to 24,
+//            "10.93.158.91" to 32,
+//            "192.168.3.66" to 24
+//        )
+//
+//        // 测试用例
+//        val testCases = listOf(
+//            "192.168.3.11" to true,
+//            "192.168.100.1" to true,
+//            "192.168.101.1" to false,
+//            "10.93.158.91" to true,
+//            "10.93.158.90" to false,
+//            "fe80::14b6:a0ff:fe3e:64de" to true,
+//            "fe80::14b6:a0ff:fe3e:64dd" to true // 在同一子网
+//        )
+//
+//        for ((ip, expected) in testCases) {
+//            val result = isSameSubnet(ip, localIps)
+//            println("Testing IP: $ip, Expected: $expected, Result: $result")
+//        }
+        sdwanRunning = true
+
+        Logger.i(OpenP2PService.LOG_TAG, "runSDWAN start:${buf.decodeToString()}");
+        try {
+            var builder = Builder()
+           val jsonObject = JSONObject(buf.decodeToString())
+            // debug sdwan info
+            // val jsonObject = JSONObject("""{"id":2817104318517097000,"name":"network1","gateway":"10.2.3.254/24","mode":"central","centralNode":"nanjin-192-168-0-82","enable":1,"tunnelNum":3,"mtu":1420,"Nodes":[{"name":"192-168-24-15","ip":"10.2.3.5"},{"name":"Alpine Linux-172.16","ip":"10.2.3.14","resource":"172.16.0.0/24"},{"name":"ctdeMacBook-Pro.local","ip":"10.2.3.22"},{"name":"dengjiandeMBP.sh.chaitin.net","ip":"10.2.3.32"},{"name":"DESKTOP-WIN11-ARM-self","ip":"10.2.3.19"},{"name":"eastdeMBP.sh.chaitin.net","ip":"10.2.3.3"},{"name":"FN-NAS-HP","ip":"10.2.3.1","resource":"192.168.100.0/24"},{"name":"huangruideMBP.sh.chaitin.net","ip":"10.2.3.30"},{"name":"iStoreOS-virtual-machine","ip":"10.2.3.12"},{"name":"k30s-redmi-10.2.33","ip":"10.2.3.27"},{"name":"lincheng-MacBook-Pro-3.sh.chaitin.net","ip":"10.2.3.15"},{"name":"localhost-mi-13","ip":"10.2.3.8"},{"name":"localhost-华为matepad11","ip":"10.2.3.13"},{"name":"luzhanwendeMacBook-Pro.local","ip":"10.2.3.17"},{"name":"Mi-pad2-local","ip":"10.2.3.9"},{"name":"nanjin-192-168-0-82","ip":"10.2.3.34"},{"name":"R7000P-2021","ip":"10.2.3.7"},{"name":"tanxiaolongsMBP.sh.chaitin.net","ip":"10.2.3.20"},{"name":"TUF-AX3000_V2-3804","ip":"10.2.3.25"},{"name":"WIN-CYZ-10.2.3.16","ip":"10.2.3.16"},{"name":"WODOUYAO","ip":"10.2.3.4"},{"name":"Zstrack01","ip":"10.2.3.51","resource":"192.168.24.0/22,192.168.20.0/24"},{"name":"小米14-localhost","ip":"10.2.3.23"}]}""")
+            val id = jsonObject.getLong("id")
+            val mtu = jsonObject.getInt("mtu")
+            val name = jsonObject.getString("name")
+            val gateway = jsonObject.getString("gateway")
+            val nodesArray = jsonObject.getJSONArray("Nodes")
+
+            val nodesList = mutableListOf<JSONObject>()
+            for (i in 0 until nodesArray.length()) {
+                nodesList.add(nodesArray.getJSONObject(i))
+            }
+
+            val myNodeName = Openp2p.getAndroidNodeName()
+            // 使用本地 IP 和子网判断是否需要添加路由
+            val localIps = getLocalIpAndSubnet()
+            Logger.i(OpenP2PService.LOG_TAG, "getAndroidNodeName:${myNodeName}");
+            val nodeList = nodesList.map {
+                val nodeName = it.getString("name")
+                val nodeIp = it.getString("ip")
+                if (nodeName == myNodeName) {
+                    try {
+                        Logger.i(LOG_TAG, "Attempting to add address: $nodeIp/24")
+                        builder.addAddress(nodeIp, 24)
+                        Logger.i(LOG_TAG, "Successfully added address")
+                    } catch (e: Exception) {
+                        Logger.e(LOG_TAG, "Failed to add address $nodeIp: ${e.message}")
+                        throw e // or handle gracefully
+                    }
+                }
+                val nodeResource = it.optString("resource", null)
+                if (!nodeResource.isNullOrEmpty()) {
+                    // 可能是多个网段，用逗号分隔
+                    val resourceList = nodeResource.split(",")
+                    for (resource in resourceList) {
+                        val parts = resource.split("/")
+                        if (parts.size == 2) {
+                            val ipAddress = parts[0].trim()
+                            val subnetMask = parts[1].trim()
+                            // 判断是否属于本机网段
+                            if (!isSameSubnet(ipAddress, localIps)) {
+                                builder.addRoute(ipAddress, subnetMask.toInt())
+                                Logger.i(
+                                    OpenP2PService.LOG_TAG,
+                                    "sdwan addRoute:${ipAddress},${subnetMask}"
+                                )
+                            } else {
+                                Logger.i(
+                                    OpenP2PService.LOG_TAG,
+                                    "Skipped adding route for ${ipAddress}, already in local subnet"
+                                )
+                            }
+                        } else {
+                            Logger.w(OpenP2PService.LOG_TAG, "Invalid resource format: $resource")
+                        }
+                    }
+                }
+
+                Node(nodeName, nodeIp, nodeResource)
+            }
+
+            val network = Network(id, name, gateway, nodeList)
+            println(network)
+            Logger.i(OpenP2PService.LOG_TAG, "onBind");
+            builder.addDnsServer("119.29.29.29")
+            builder.addDnsServer("2400:3200::1") // alicloud dns v6 & v4
+            // builder.addRoute("10.2.3.0", 24)
+//            builder.addRoute("0.0.0.0", 0);
+            val gatewayStr = jsonObject.optString("gateway", "")
+            val subNet = getNetworkAddress(gatewayStr)
+            if (subNet != null) {
+                val (netIp, prefix) = subNet
+                builder.addRoute(netIp, prefix)
+                Logger.i(OpenP2PService.LOG_TAG, "Added route from gateway: $netIp/$prefix")
+            } else {
+                Logger.w(OpenP2PService.LOG_TAG, "Invalid gateway format: $gatewayStr")
+            }
+
+            builder.setSession(LOG_TAG!!)
+            builder.setMtu(mtu)
+            vpnInterface = builder.establish()
+            if (vpnInterface == null) {
+                Log.e(OpenP2PService.LOG_TAG, "start vpnservice error: ");
+            }
+
+            val byteArrayWrite = ByteArray(4096)
+            serviceScope.launch(Dispatchers.IO) {
+                readTunLoop() // 文件读操作，适合 Dispatchers.IO
+            }
+
+            val outputStream = FileOutputStream(vpnInterface?.fileDescriptor).channel
+            if (outputStream == null) {
+                Log.e(OpenP2PService.LOG_TAG, "open FileOutputStream error: ");
+                return
+            }
+            Logger.i(LOG_TAG, "write tun loop start")
+            while (sdwanRunning) {
+                val len = Openp2p.androidWrite(byteArrayWrite, 3000)
+                if (len > mtu || len.toInt() == 0) {
+                    continue
+                }
+                try {
+                    val writeBytes =
+                        outputStream?.write(ByteBuffer.wrap(byteArrayWrite, 0, len.toInt()))
+                    if (writeBytes != null && writeBytes <= 0) {
+                        Logger.e(LOG_TAG, "outputStream.write failed: $writeBytes")
+                    }
+                } catch (e: Exception) {
+                    Logger.e(LOG_TAG, "outputStream.write exception: ${e.message}")
+                    e.printStackTrace()
+                    continue
+                }
+            }
+            outputStream.close()
+            vpnInterface?.close()
+            vpnInterface = null
+            Logger.i(LOG_TAG, "write tun loop end")
+        } catch (e: Exception) {
+            Logger.i("VPN Connection", "发生异常: ${e.message}")
+        }
+        Logger.i(OpenP2PService.LOG_TAG, "runSDWAN end");
+    }
+    /**
+     * 将 "10.2.3.254/16" 这样的 CIDR 转成正确对齐的网络地址，如 "10.2.0.0/16"
+     */
+    fun getNetworkAddress(cidr: String): Pair<String, Int>? {
+        val parts = cidr.trim().split("/")
+        if (parts.size != 2) return null
+
+        val ip = parts[0]
+        val prefix = parts[1].toIntOrNull() ?: return null
+        if (prefix !in 0..32) return null
+
+        val octets = ip.split(".").map { it.toInt() }
+        if (octets.size != 4) return null
+
+        // 转成整数
+        val ipInt = (octets[0] shl 24) or (octets[1] shl 16) or (octets[2] shl 8) or octets[3]
+
+        // 生成掩码并计算网络地址
+        val mask = if (prefix == 0) 0 else (-1 shl (32 - prefix))
+        val networkInt = ipInt and mask
+
+        // 转回点分十进制
+        val networkIp = listOf(
+            (networkInt shr 24) and 0xFF,
+            (networkInt shr 16) and 0xFF,
+            (networkInt shr 8) and 0xFF,
+            networkInt and 0xFF
+        ).joinToString(".")
+
+        return networkIp to prefix
+    }
    override fun onDestroy() {
-        Log.i(LOG_TAG, "onDestroy - Thread ID = " + Thread.currentThread().id)
        super.onDestroy()
+        Logger.i(LOG_TAG, "onDestroy - Canceling service scope")
+        serviceScope.cancel() // 取消所有与服务相关的协程
    }

    override fun onUnbind(intent: Intent?): Boolean {
-        Log.i(LOG_TAG, "onUnbind - Thread ID = " + Thread.currentThread().id)
+        Logger.i(LOG_TAG, "onUnbind - Thread ID = " + Thread.currentThread().id)
        stopSelf()
        return super.onUnbind(intent)
    }
+
    fun isConnected(): Boolean {
        if (!::network.isInitialized) return false
-        return network?.connect(1000)
+        return network.connect(1000)
    }

    fun stop() {
-        running=false
+        running = false
        stopSelf()
+        Openp2p.stop()
    }
+
    @RequiresApi(Build.VERSION_CODES.O)
    private fun createNotificationChannel(channelId: String, channelName: String): String? {
        val chan = NotificationChannel(
@@ -112,4 +398,55 @@ class OpenP2PService : Service() {
        service.createNotificationChannel(chan)
        return channelId
    }
+}
+
+// 获取本机所有IP地址和对应的子网信息
+fun getLocalIpAndSubnet(): List<Pair<String, Int>> {
+    val localIps = mutableListOf<Pair<String, Int>>()
+    val networkInterfaces = NetworkInterface.getNetworkInterfaces()
+    // 手动添加测试数据
+    //localIps.add(Pair("192.168.3.33", 24))
+    while (networkInterfaces.hasMoreElements()) {
+        val networkInterface = networkInterfaces.nextElement()
+        if (networkInterface.isUp && !networkInterface.isLoopback) {
+            val interfaceAddresses = networkInterface.interfaceAddresses
+            for (interfaceAddress in interfaceAddresses) {
+                val address = interfaceAddress.address
+                val prefixLength = interfaceAddress.networkPrefixLength
+                if (address is InetAddress) {
+                    localIps.add(Pair(address.hostAddress, prefixLength.toInt()))
+                }
+            }
+        }
+    }
+    return localIps
+}
+
+// 判断某个IP是否与本机某网段匹配
+fun isSameSubnet(ipAddress: String, localIps: List<Pair<String, Int>>): Boolean {
+    val targetIp = InetAddress.getByName(ipAddress).address
+    for ((localIp, prefixLength) in localIps) {
+        val localIpBytes = InetAddress.getByName(localIp).address
+        val mask = createSubnetMask(prefixLength, localIpBytes.size) // 动态生成掩码
+
+        // 比较目标 IP 和本地 IP 的网络部分
+        if (targetIp.indices.all { i ->
+                (targetIp[i].toInt() and mask[i].toInt()) == (localIpBytes[i].toInt() and mask[i].toInt())
+            }) {
+            return true
+        }
+    }
+    return false
+}
+
+// 根据前缀长度动态生成子网掩码
+fun createSubnetMask(prefixLength: Int, addressLength: Int): ByteArray {
+    val mask = ByteArray(addressLength)
+    for (i in 0 until prefixLength / 8) {
+        mask[i] = 0xFF.toByte()
+    }
+    if (prefixLength % 8 != 0) {
+        mask[prefixLength / 8] = (0xFF shl (8 - (prefixLength % 8))).toByte()
+    }
+    return mask
 }
--- a/app/app/src/main/java/cn/openp2p/log.kt
+++ b/app/app/src/main/java/cn/openp2p/log.kt
@@ -0,0 +1,91 @@
+package cn.openp2p
+import android.util.Log
+import java.text.SimpleDateFormat
+import java.io.BufferedWriter
+import java.io.File
+import java.io.FileWriter
+import java.io.IOException
+import java.util.Date
+import java.util.Locale
+
+object Logger {
+    private const val LOG_TAG = "OpenP2PLogger"
+    private var logFile: File? = null
+    private var bufferedWriter: BufferedWriter? = null
+
+    // 初始化日志文件
+    fun init(logDir: File, logFileName: String = "app.log") {
+        if (!logDir.exists()) logDir.mkdirs()
+        logFile = File(logDir, logFileName)
+
+        try {
+            bufferedWriter = BufferedWriter(FileWriter(logFile, true))
+        } catch (e: IOException) {
+            Log.e(LOG_TAG, "Failed to initialize BufferedWriter: ${e.message}")
+        }
+    }
+
+    // 写日志（线程安全）
+    @Synchronized
+    fun log(level: String, tag: String, message: String, throwable: Throwable? = null) {
+        val timestamp = SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()).format(Date())
+        val logMessage = "$timestamp $level $tag: $message"
+
+        // 打印到 console
+        when (level) {
+            "ERROR" -> Log.e(tag, message, throwable)
+            "WARN" -> Log.w(tag, message, throwable)
+            "INFO" -> Log.i(tag, message)
+            "DEBUG" -> Log.d(tag, message)
+            "VERBOSE" -> Log.v(tag, message)
+        }
+
+        // 写入文件
+        try {
+            bufferedWriter?.apply {
+                write(logMessage)
+                newLine()
+                flush()
+            }
+            throwable?.let {
+                bufferedWriter?.apply {
+                    write(Log.getStackTraceString(it))
+                    newLine()
+                    flush()
+                }
+            }
+        } catch (e: IOException) {
+            Log.e(LOG_TAG, "Failed to write log to file: ${e.message}")
+        }
+    }
+
+    // 清理资源
+    fun close() {
+        try {
+            bufferedWriter?.close()
+        } catch (e: IOException) {
+            Log.e(LOG_TAG, "Failed to close BufferedWriter: ${e.message}")
+        }
+    }
+
+    // 简化方法
+    fun e(tag: String, message: String, throwable: Throwable? = null) {
+        log("ERROR", tag, message, throwable)
+    }
+
+    fun w(tag: String, message: String, throwable: Throwable? = null) {
+        log("WARN", tag, message, throwable)
+    }
+
+    fun i(tag: String, message: String) {
+        log("INFO", tag, message)
+    }
+
+    fun d(tag: String, message: String) {
+        log("DEBUG", tag, message)
+    }
+
+    fun v(tag: String, message: String) {
+        log("VERBOSE", tag, message)
+    }
+}
--- a/app/app/src/main/java/cn/openp2p/ui/login/LoginActivity.kt
+++ b/app/app/src/main/java/cn/openp2p/ui/login/LoginActivity.kt
@@ -5,6 +5,7 @@ import android.app.Activity
 import android.app.ActivityManager
 import android.app.Notification
 import android.app.PendingIntent
+import android.content.BroadcastReceiver
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
@@ -25,6 +26,7 @@ import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
+import cn.openp2p.Logger
 import cn.openp2p.OpenP2PService
 import cn.openp2p.R
 import cn.openp2p.databinding.ActivityLoginBinding
@@ -51,6 +53,14 @@ class LoginActivity : AppCompatActivity() {
    private lateinit var loginViewModel: LoginViewModel
    private lateinit var binding: ActivityLoginBinding
    private lateinit var mService: OpenP2PService
+    @RequiresApi(Build.VERSION_CODES.O)
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        if (requestCode == 0 && resultCode == Activity.RESULT_OK) {
+            startService(Intent(this, OpenP2PService::class.java))
+        }
+    }
+
    @RequiresApi(Build.VERSION_CODES.O)
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
@@ -78,22 +88,18 @@ class LoginActivity : AppCompatActivity() {
                token.error = getString(loginState.passwordError)
            }
        })
-        val intent1 = VpnService.prepare(this) ?: return
-        loginViewModel.loginResult.observe(this@LoginActivity, Observer {
-            val loginResult = it ?: return@Observer
+        openp2pLog.setText(R.string.phone_setting)
+        val intent = VpnService.prepare(this)
+         if (intent != null)
+         {
+             Log.i("openp2p", "VpnService.prepare need permission");
+             startActivityForResult(intent, 0)
+         }
+         else {
+             Log.i("openp2p", "VpnService.prepare ready");
+             onActivityResult(0, Activity.RESULT_OK, null)
+         }

-            loading.visibility = View.GONE
-            if (loginResult.error != null) {
-                showLoginFailed(loginResult.error)
-            }
-            if (loginResult.success != null) {
-                updateUiWithUser(loginResult.success)
-            }
-            setResult(Activity.RESULT_OK)
-
-            //Complete and destroy login activity once successful
-            finish()
-        })

        profile.setOnClickListener {
            val url = "https://console.openp2p.cn/profile"
@@ -110,17 +116,23 @@ class LoginActivity : AppCompatActivity() {
            }

            openp2pLog.setText(R.string.phone_setting)
-            token.setText(Openp2p.getToken(getExternalFilesDir(null).toString()))
+
            login.setOnClickListener {
                if (login.text.toString()=="退出"){
-//                    val intent = Intent(this@LoginActivity, OpenP2PService::class.java)
-//                    stopService(intent)
+                //    val intent = Intent(this@LoginActivity, OpenP2PService::class.java)
+                //    stopService(intent)
                    Log.i(LOG_TAG, "quit")
                    mService.stop()
-                    unbindService(connection)
+
                    val intent = Intent(this@LoginActivity, OpenP2PService::class.java)
                    stopService(intent)
+                    // 解绑服务
+                    unbindService(connection)
+
+                    // 结束当前 Activity
+                    finish() // 或者使用 finishAffinity() 来结束整个应用程序
                    exitAPP()
+                    // finishAffinity()

                }
                login.setText("退出")
@@ -139,13 +151,20 @@ class LoginActivity : AppCompatActivity() {
                            if (isConnect) {
                                onlineState.setText("在线")
                            } else {
-                                onlineState.setText("离线")
+                                onlineState.setText("正在登录")
                            }
                        }
                    } while (true)
                }

            }
+            val tokenText = Openp2p.getToken(getExternalFilesDir(null).toString())
+            token.setText(tokenText.toString())
+            // Check token length and automatically click login if length > 10
+            if (tokenText.length > 10) {
+//                Logger.log("performClick ")
+                login.performClick()
+            }
        }
    }
    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
--- a/app/app/src/main/res/layout/activity_login.xml
+++ b/app/app/src/main/res/layout/activity_login.xml
@@ -13,28 +13,27 @@

    <EditText
        android:id="@+id/token"
-        android:layout_width="225dp"
-        android:layout_height="46dp"
+        android:layout_width="250dp"
+        android:layout_height="45dp"
        android:hint="Token"
        android:imeActionLabel="@string/action_sign_in_short"
        android:imeOptions="actionDone"
        android:selectAllOnFocus="true"
        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-         />
+        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/login"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+        android:layout_width="85dp"
+        android:layout_height="45dp"
        android:layout_gravity="start"
        android:layout_marginStart="24dp"
        android:layout_marginLeft="24dp"
        android:enabled="false"
        android:text="@string/action_sign_in"
+        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/token"
-        app:layout_constraintTop_toTopOf="parent"
-        tools:layout_editor_absoluteY="-2dp" />
+        app:layout_constraintTop_toTopOf="parent" />



@@ -58,28 +57,36 @@
        android:id="@+id/openp2pLog"
        android:layout_width="359dp"
        android:layout_height="548dp"
+        android:layout_marginTop="24dp"
        android:ems="10"
-        android:inputType="none"
-        android:textIsSelectable="true"
        android:focusable="false"
+        android:inputType="none"
        android:text="Name"
+        android:textIsSelectable="true"
+        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/onlineState" />
+
    <Button
        android:id="@+id/profile"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+        android:layout_width="250dp"
+        android:layout_height="45dp"
+        android:layout_marginTop="8dp"
        android:text="打开控制台查看Token"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/token" />

    <EditText
        android:id="@+id/onlineState"
-        android:layout_width="113dp"
+        android:layout_width="85dp"
        android:layout_height="45dp"
+        android:layout_marginStart="24dp"
+        android:layout_marginLeft="24dp"
+        android:layout_marginTop="8dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="未登录"
+        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/profile"
        app:layout_constraintTop_toBottomOf="@+id/login" />

--- a/app/app/src/main/res/values/strings.xml
+++ b/app/app/src/main/res/values/strings.xml
@@ -10,7 +10,14 @@
    <string name="invalid_password">Token可以在 https://console.openp2p.cn/profile 获得</string>
    <string name="login_failed">"Login failed"</string>
    <string name="phone_setting">"安卓系统默认设置的”杀后台进程“会导致 OpenP2P 在后台运行一会后，被系统杀死进程，导致您的体验受到影响。您可以通过以下方式修改几个设置，解决此问题：
-
+华为鸿蒙：
+    1. 允许应用后台运行：进入设置 → 搜索进入 应用启动管理 → 关闭 OpenP2P 的 自动管理 开关 → 在弹框中勾选 允许后台活动 
+    2. 避免应用被电池优化程序清理：进入设置 → 搜索进入电池优化 → 不允许 →选择所有应用 → 找到无法后台运行的应用 → 设置为不允许
+    3. 关闭省电模式：进入设置 → 电池 → 关闭 省电模式 开关
+    4. 保持设备网络连接：进入设置  → 电池 → 更多电池设置 → 开启 休眠时始终保持网络连接 开关。
+    5. 给后台运行的应用加锁：打开应用后 → 进入多任务界面 → 下拉选中的卡片进行加锁 → 然后点击清理图标清理其他不经常使用的应用
+    6. 设置开发人员选项中相关开关：进入设置 → 搜索进入 开发人员选项 → 找到 不保留活动 开关后关闭 → 并在 后台进程限制 选择 标准限制
+    
 华为手机：
    进入”设置“，搜索并进入“电池优化“界面，选中 OpenP2P 程序，不允许系统对其进行电池优化；
    进入”设置“，进入”应用管理“界面，选中 OpenP2P 程序，点击”耗电情况“，开启”允许后台活动“即可；
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -0,0 +1,38 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+
+    ext.kotlin_version = "1.8.20"
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:8.1.3"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+allprojects {
+    repositories {
+        maven { url 'https://maven.aliyun.com/repository/google' }
+        maven { url 'https://maven.aliyun.com/repository/central' }
+        maven { url 'https://maven.aliyun.com/repository/public' }
+        maven { url 'https://jitpack.io' }
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
--- a/app/gradle.properties
+++ b/app/gradle.properties
@@ -6,7 +6,7 @@
 # http://www.gradle.org/docs/current/userguide/build_environment.html
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+org.gradle.jvmargs=-Xmx4096m -Dfile.encoding=UTF-8
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
@@ -16,4 +16,6 @@ org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
 # https://developer.android.com/topic/libraries/support-library/androidx-rn
 android.useAndroidX=true
 # Kotlin code style for this project: "official" or "obsolete":
-kotlin.code.style=official
+kotlin.code.style=official
+org.gradle.caching=true
+
--- a/app/gradle/wrapper/gradle-wrapper.properties
+++ b/app/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Oct 22 21:46:24 CST 2022
+#Tue Dec 05 16:04:08 CST 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
 distributionPath=wrapper/dists
-zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/cmd/openp2p.go
+++ b/cmd/openp2p.go
@@ -1,7 +1,9 @@
-package main
-
-import openp2p "openp2p/core"
-
-func main() {
-	openp2p.Run()
-}
+package main
+
+import (
+	op2p "openp2p/core"
+)
+
+func main() {
+	op2p.Run()
+}
--- a/core/bandwidthLimit.go
+++ b/core/bandwidthLimit.go
@@ -1,45 +0,0 @@
-package openp2p
-
-import (
-	"sync"
-	"time"
-)
-
-// BandwidthLimiter ...
-type BandwidthLimiter struct {
-	ts           time.Time
-	bw           int // mbps
-	freeBytes    int // bytes
-	maxFreeBytes int // bytes
-	mtx          sync.Mutex
-}
-
-// mbps
-func newBandwidthLimiter(bw int) *BandwidthLimiter {
-	return &BandwidthLimiter{
-		bw:           bw,
-		ts:           time.Now(),
-		maxFreeBytes: bw * 1024 * 1024 / 8,
-		freeBytes:    bw * 1024 * 1024 / 8,
-	}
-}
-
-// Add ...
-func (bl *BandwidthLimiter) Add(bytes int) {
-	if bl.bw <= 0 {
-		return
-	}
-	bl.mtx.Lock()
-	defer bl.mtx.Unlock()
-	// calc free flow 1000*1000/1024/1024=0.954; 1024*1024/1000/1000=1.048
-	bl.freeBytes += int(time.Since(bl.ts) * time.Duration(bl.bw) / 8 / 954)
-	if bl.freeBytes > bl.maxFreeBytes {
-		bl.freeBytes = bl.maxFreeBytes
-	}
-	bl.freeBytes -= bytes
-	bl.ts = time.Now()
-	if bl.freeBytes < 0 {
-		// sleep for the overflow
-		time.Sleep(time.Millisecond * time.Duration(-bl.freeBytes/(bl.bw*1048/8)))
-	}
-}
--- a/core/common.go
+++ b/core/common.go
@@ -2,16 +2,22 @@ package openp2p

 import (
 	"bytes"
+	"context"
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/tls"
+	"encoding/binary"
 	"encoding/json"
 	"fmt"
+	"io"
+	"math"
+	"math/big"
 	"math/rand"
 	"net"
 	"net/http"
 	"os"
 	"os/exec"
+	"runtime"
 	"strconv"
 	"strings"
 	"time"
@@ -126,20 +132,19 @@ func netInfo() *NetInfo {
 		client := &http.Client{Transport: tr, Timeout: time.Second * 10}
 		r, err := client.Get("https://ifconfig.co/json")
 		if err != nil {
-			gLog.Println(LvDEBUG, "netInfo error:", err)
+			gLog.d("netInfo error:%s", err)
 			continue
 		}
 		defer r.Body.Close()
 		buf := make([]byte, 1024*64)
 		n, err := r.Body.Read(buf)
-		if err != nil {
-			gLog.Println(LvDEBUG, "netInfo error:", err)
+		if err != nil && err != io.EOF {
+			gLog.d("error reading response body: %s", err)
 			continue
 		}
 		rsp := NetInfo{}
-		err = json.Unmarshal(buf[:n], &rsp)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong NetInfo:%s", err)
+		if err = json.Unmarshal(buf[:n], &rsp); err != nil {
+			gLog.e("wrong NetInfo:%s", err)
 			continue
 		}
 		return &rsp
@@ -198,8 +203,12 @@ func parseMajorVer(ver string) int {
 	return 0
 }

-func IsIPv6(address string) bool {
-	return strings.Count(address, ":") >= 2
+func IsIPv6(ipStr string) bool {
+	ip := net.ParseIP(ipStr)
+	if ip == nil {
+		return false
+	}
+	return ip.To16() != nil && ip.To4() == nil
 }

 var letters = []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-")
@@ -211,3 +220,186 @@ func randStr(n int) string {
 	}
 	return string(b)
 }
+
+func execCommand(commandPath string, wait bool, arg ...string) (err error) {
+	command := exec.Command(commandPath, arg...)
+	err = command.Start()
+	if err != nil {
+		return
+	}
+	if wait {
+		err = command.Wait()
+	}
+	return
+}
+
+func sanitizeFileName(fileName string) string {
+	validFileName := fileName
+	invalidChars := []string{"\\", "/", ":", "*", "?", "\"", "<", ">", "|"}
+	for _, char := range invalidChars {
+		validFileName = strings.ReplaceAll(validFileName, char, " ")
+	}
+	return validFileName
+}
+
+func prettyJson(s interface{}) string {
+	jsonData, err := json.MarshalIndent(s, "", "  ")
+	if err != nil {
+		fmt.Println("Error marshalling JSON:", err)
+		return ""
+	}
+	return string(jsonData)
+}
+
+func inetAtoN(ipstr string) (uint32, error) { // support both ipnet or single ip
+	i, _, err := net.ParseCIDR(ipstr)
+	if err != nil {
+		i = net.ParseIP(ipstr)
+		if i == nil {
+			return 0, err
+		}
+	}
+	ret := big.NewInt(0)
+	ret.SetBytes(i.To4())
+	return uint32(ret.Int64()), nil
+}
+
+func calculateChecksum(data []byte) uint16 {
+	length := len(data)
+	sum := uint32(0)
+
+	// Calculate the sum of 16-bit words
+	for i := 0; i < length-1; i += 2 {
+		sum += uint32(binary.BigEndian.Uint16(data[i : i+2]))
+	}
+
+	// Add the last byte (if odd length)
+	if length%2 != 0 {
+		sum += uint32(data[length-1])
+	}
+
+	// Fold 32-bit sum to 16 bits
+	sum = (sum >> 16) + (sum & 0xffff)
+	sum += (sum >> 16)
+
+	return uint16(^sum)
+}
+
+func min(nums ...int32) int32 {
+	if len(nums) == 0 {
+		return 0 // 如果没有输入，返回最大值
+	}
+
+	minVal := nums[0]
+	for _, num := range nums[1:] {
+		if num < minVal {
+			minVal = num
+		}
+	}
+	return minVal
+}
+
+func calcRetryTimeRelay(x float64) float64 {
+	return 10 + math.Exp(0.8*(x-3.6))
+}
+func calcRetryTimeDirect(x float64) float64 {
+	return 10 + math.Exp(2.8*(x-4))
+}
+
+func isAndroid() bool {
+	if runtime.GOOS == "android" {
+		return true
+	}
+	data, err := os.ReadFile("/proc/version")
+	if err != nil {
+		return false
+	}
+	return strings.Contains(string(data), "Android")
+}
+
+func moveFile(src, dst string) error {
+	err := os.Rename(src, dst)
+	if err == nil {
+		return nil
+	}
+	// windows could not rename running executable, so copy then delete
+	if runtime.GOOS == "windows" {
+		err = copyFile(src, dst)
+		if err != nil {
+			return err
+		}
+
+		os.Remove(src)
+	}
+	return nil
+}
+
+func copyFile(src, dst string) error {
+	sourceFile, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer sourceFile.Close()
+
+	destFile, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer destFile.Close()
+
+	_, err = io.Copy(destFile, sourceFile)
+	if err != nil {
+		return err
+	}
+
+	return destFile.Sync()
+}
+
+func resolveServerIP(host string) ([]string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// 先系统 DNS
+	ips, err := net.DefaultResolver.LookupHost(ctx, host)
+	if err == nil && len(ips) > 0 {
+		gLog.i("system dns resolved %s -> %v", host, ips)
+		return ips, nil
+	}
+
+	gLog.e("system dns resolve failed for %s: %v", host, err)
+	gLog.i("retry with fallback dns...")
+
+	// 再 fallback dns
+	return lookupWithCustomDNS(ctx, host)
+}
+func lookupWithCustomDNS(ctx context.Context, domain string) ([]string, error) {
+	resolver := &net.Resolver{
+		PreferGo: true,
+		Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
+			dialer := &net.Dialer{Timeout: 5 * time.Second}
+
+			// 先 119.29.29.29
+			conn, err := dialer.DialContext(ctx, network, "119.29.29.29:53")
+			if err == nil {
+				return conn, nil
+			}
+
+			// 再 8.8.8.8
+			return dialer.DialContext(ctx, network, "8.8.8.8:53")
+		},
+	}
+
+	return resolver.LookupHost(ctx, domain)
+}
+
+func writeFull(w io.Writer, data []byte) error {
+	totalWritten := 0
+	for totalWritten < len(data) {
+		n, err := w.Write(data[totalWritten:])
+		if err != nil {
+			return fmt.Errorf("write failed after %d bytes: %w", totalWritten, err)
+		}
+		totalWritten += n
+	}
+	return nil
+}
--- a/core/common_test.go
+++ b/core/common_test.go
@@ -1,6 +1,7 @@
 package openp2p

 import (
+	"fmt"
 	"log"
 	"testing"
 )
@@ -94,3 +95,91 @@ func TestParseMajorVer(t *testing.T) {
 	assertParseMajorVer(t, "3.0.0", 3)

 }
+
+func TestIsIPv6(t *testing.T) {
+	tests := []struct {
+		ipStr string
+		want  bool
+	}{
+		{"2001:0db8:85a3:0000:0000:8a2e:0370:7334", true}, // 有效的 IPv6 地址
+		{"2001:db8::2:1", true},                           // 有效的 IPv6 地址
+		{"192.168.1.1", false},                            // 无效的 IPv6 地址，是 IPv4
+		{"2001:db8::G:1", false},                          // 无效的 IPv6 地址，包含非法字符
+		// 可以添加更多测试用例
+	}
+
+	for _, tt := range tests {
+		got := IsIPv6(tt.ipStr)
+		if got != tt.want {
+			t.Errorf("isValidIPv6(%s) = %v, want %v", tt.ipStr, got, tt.want)
+		}
+	}
+}
+
+func TestNodeID(t *testing.T) {
+	node1 := "n1-stable"
+	node2 := "tony-stable"
+	nodeID1 := NodeNameToID(node1)
+	nodeID2 := NodeNameToID(node2)
+	if nodeID1 < nodeID2 {
+		fmt.Printf("%s < %s\n", node1, node2)
+	} else {
+		fmt.Printf("%s >= %s\n", node1, node2)
+	}
+}
+
+func TestCalcRetryTime(t *testing.T) {
+	// 0-2 < 13s
+	// 3-5:300
+	// 6-10:600
+	tests := []struct {
+		retryNum float64
+		want     float64
+	}{
+		{1.0, 10},
+		{5.0, 13},
+		{10.0, 180},
+		{15.0, 9000},
+		{18.0, 90000},
+		// 可以添加更多测试用例
+	}
+
+	for _, tt := range tests {
+		got := calcRetryTimeRelay(tt.retryNum)
+		if got < tt.want*0.85 || got > tt.want*1.15 {
+			t.Errorf("calcRetryTime(%f) = %f, want %f", tt.retryNum, got, tt.want)
+		}
+	}
+
+	for i := 0; i < 20; i++ {
+		log.Printf("%d retryTime=%fs", i, calcRetryTimeRelay(float64(i)))
+	}
+}
+
+func TestCalcRetryTimeDirect(t *testing.T) {
+	// 0-2 < 13s
+	// 3-5:300
+	// 6-10:600
+	tests := []struct {
+		retryNum float64
+		want     float64
+	}{
+		{1.0, 10},
+		{5.0, 13},
+		{10.0, 180},
+		{15.0, 9000},
+		{18.0, 90000},
+		// 可以添加更多测试用例
+	}
+
+	for _, tt := range tests {
+		got := calcRetryTimeRelay(tt.retryNum)
+		if got < tt.want*0.85 || got > tt.want*1.15 {
+			t.Errorf("calcRetryTime(%f) = %f, want %f", tt.retryNum, got, tt.want)
+		}
+	}
+
+	for i := 0; i < 20; i++ {
+		log.Printf("%d retryTime=%fs", i, calcRetryTimeDirect(float64(i)))
+	}
+}
--- a/core/config.go
+++ b/core/config.go
@@ -3,8 +3,10 @@ package openp2p
 import (
 	"encoding/json"
 	"flag"
-	"io/ioutil"
+	"fmt"
 	"os"
+	"strconv"
+	"strings"
 	"sync"
 	"time"
 )
@@ -13,18 +15,25 @@ var gConf Config

 type AppConfig struct {
 	// required
-	AppName  string
-	Protocol string
-	SrcPort  int
-	PeerNode string
-	DstPort  int
-	DstHost  string
-	PeerUser string
-	Enabled  int // default:1
+	AppName          string
+	Protocol         string
+	UnderlayProtocol string
+	PunchPriority    int // bitwise DisableTCP|DisableUDP|TCPFirst  0:tcp and udp both enable, udp first
+	Whitelist        string
+	SrcPort          int
+	PeerNode         string
+	DstPort          int
+	DstHost          string
+	PeerUser         string
+	RelayNode        string
+	ForceRelay       int // default:0 disable;1 enable
+	Enabled          int // default:1
 	// runtime info
+	relayMode        string // private|public
 	peerVersion      string
 	peerToken        uint64
 	peerNatType      int
+	peerLanIP        string
 	hasIPv4          int
 	peerIPv6         string
 	hasUPNPorNATPMP  int
@@ -38,16 +47,113 @@ type AppConfig struct {
 	connectTime      time.Time
 	fromToken        uint64
 	linkMode         string
-	isUnderlayServer int // TODO: bool?
+	isUnderlayServer int
+}
+
+const (
+	PunchPriorityUDPFirst = 0
+	PunchPriorityTCPFirst = 1
+	PunchPriorityTCPOnly  = 1 << 1
+	PunchPriorityUDPOnly  = 1 << 2
+)
+
+func (c *AppConfig) ID() uint64 {
+	if c.SrcPort == 0 { // memapp
+		return NodeNameToID(c.PeerNode)
+	}
+	if c.Protocol == "tcp" {
+		return uint64(c.SrcPort) * 10
+	}
+	return uint64(c.SrcPort)*10 + 1
+}
+
+func (c *AppConfig) LogPeerNode() string {
+	if c.relayMode == "public" { // memapp
+		return fmt.Sprintf("%d", NodeNameToID(c.PeerNode))
+	}
+	return c.PeerNode
 }

-// TODO: add loglevel, maxlogfilesize
 type Config struct {
-	Network    NetworkConfig `json:"network"`
-	Apps       []*AppConfig  `json:"apps"`
-	LogLevel   int
-	daemonMode bool
-	mtx        sync.Mutex
+	Network NetworkConfig `json:"network"`
+	Apps    []*AppConfig  `json:"apps"`
+
+	LogLevel              int
+	MaxLogSize            int
+	TLSInsecureSkipVerify bool
+	Forcev6               bool
+	daemonMode            bool
+	mtx                   sync.RWMutex
+	fileMtx               sync.Mutex
+	sdwanMtx              sync.Mutex
+	sdwan                 SDWANInfo
+	delNodes              []*SDWANNode
+	addNodes              []*SDWANNode
+}
+
+func (c *Config) getSDWAN() SDWANInfo {
+	c.sdwanMtx.Lock()
+	defer c.sdwanMtx.Unlock()
+	return c.sdwan
+}
+
+func (c *Config) getDelNodes() []*SDWANNode {
+	c.sdwanMtx.Lock()
+	defer c.sdwanMtx.Unlock()
+	return c.delNodes
+}
+
+func (c *Config) getAddNodes() []*SDWANNode {
+	c.sdwanMtx.Lock()
+	defer c.sdwanMtx.Unlock()
+	return c.addNodes
+}
+
+func (c *Config) resetSDWAN() {
+	c.sdwanMtx.Lock()
+	defer c.sdwanMtx.Unlock()
+	c.delNodes = []*SDWANNode{}
+	c.addNodes = []*SDWANNode{}
+	c.sdwan = SDWANInfo{}
+}
+func (c *Config) setSDWAN(s SDWANInfo) {
+	c.sdwanMtx.Lock()
+	defer c.sdwanMtx.Unlock()
+	// get old-new
+	c.delNodes = []*SDWANNode{}
+	for _, oldNode := range c.sdwan.Nodes {
+		isDeleted := true
+		for _, newNode := range s.Nodes {
+			if oldNode.Name == newNode.Name && oldNode.IP == newNode.IP && oldNode.Resource == newNode.Resource && c.sdwan.Mode == s.Mode && c.sdwan.CentralNode == s.CentralNode {
+				isDeleted = false
+				break
+			}
+		}
+		if isDeleted {
+			c.delNodes = append(c.delNodes, oldNode)
+		}
+	}
+	// get new-old
+	c.addNodes = []*SDWANNode{}
+	for _, newNode := range s.Nodes {
+		isNew := true
+		for _, oldNode := range c.sdwan.Nodes {
+			if oldNode.Name == newNode.Name && oldNode.IP == newNode.IP && oldNode.Resource == newNode.Resource && c.sdwan.Mode == s.Mode && c.sdwan.CentralNode == s.CentralNode {
+				isNew = false
+				break
+			}
+		}
+		if isNew {
+			c.addNodes = append(c.addNodes, newNode)
+		}
+	}
+	c.sdwan = s
+	if c.sdwan.TunnelNum < 2 {
+		c.sdwan.TunnelNum = 2 // DEBUG
+	}
+	if c.sdwan.TunnelNum > 3 {
+		c.sdwan.TunnelNum = 3
+	}
 }

 func (c *Config) switchApp(app AppConfig, enabled int) {
@@ -58,65 +164,130 @@ func (c *Config) switchApp(app AppConfig, enabled int) {
 			c.Apps[i].Enabled = enabled
 			c.Apps[i].retryNum = 0
 			c.Apps[i].nextRetryTime = time.Now()
-			return
+			break
 		}
 	}
+	c.save()
 }
+
+// TODO: move to p2pnetwork
 func (c *Config) retryApp(peerNode string) {
-	c.mtx.Lock()
-	defer c.mtx.Unlock()
-	for i := 0; i < len(c.Apps); i++ {
-		if c.Apps[i].PeerNode == peerNode {
-			c.Apps[i].retryNum = 0
-			c.Apps[i].nextRetryTime = time.Now()
+	GNetwork.apps.Range(func(id, i interface{}) bool {
+		app := i.(*p2pApp)
+		if app.config.PeerNode == peerNode {
+			app.Retry(true)
 		}
-	}
+		if app.config.RelayNode == peerNode {
+			app.Retry(false)
+			gLog.d("retry app relay=%s", app.config.LogPeerNode())
+		}
+		return true
+	})
+}
+
+func (c *Config) retryAllApp() {
+	GNetwork.apps.Range(func(id, i interface{}) bool {
+		app := i.(*p2pApp)
+		app.Retry(true)
+		return true
+	})
+}
+
+func (c *Config) retryAllMemApp() {
+	GNetwork.apps.Range(func(id, i interface{}) bool {
+		app := i.(*p2pApp)
+		if app.config.SrcPort != 0 {
+			return true
+		}
+		if app.tunnelNum != int(gConf.sdwan.TunnelNum) {
+			gLog.d("memapp %s tunnelNum changed from %d to %d, delete it and not retry", app.config.LogPeerNode(), app.tunnelNum, gConf.sdwan.TunnelNum)
+			GNetwork.DeleteApp(app.config)
+			return true
+		}
+		app.Retry(true)
+		return true
+	})
 }

 func (c *Config) add(app AppConfig, override bool) {
+	if app.AppName == "" {
+		app.AppName = fmt.Sprintf("%d", app.ID())
+	}
 	c.mtx.Lock()
 	defer c.mtx.Unlock()
-	if app.SrcPort == 0 || app.DstPort == 0 {
-		gLog.Println(LvERROR, "invalid app ", app)
-		return
-	}
 	if override {
 		for i := 0; i < len(c.Apps); i++ {
-			if c.Apps[i].Protocol == app.Protocol && c.Apps[i].SrcPort == app.SrcPort {
+			if c.Apps[i].PeerNode == app.PeerNode && c.Apps[i].Protocol == app.Protocol && c.Apps[i].SrcPort == app.SrcPort {
 				c.Apps[i] = &app // override it
 				return
 			}
 		}
 	}
 	c.Apps = append(c.Apps, &app)
+	if app.SrcPort != 0 {
+		c.save()
+	}
 }

 func (c *Config) delete(app AppConfig) {
-	if app.SrcPort == 0 || app.DstPort == 0 {
-		return
-	}
 	c.mtx.Lock()
 	defer c.mtx.Unlock()
 	for i := 0; i < len(c.Apps); i++ {
-		if c.Apps[i].Protocol == app.Protocol && c.Apps[i].SrcPort == app.SrcPort {
-			c.Apps = append(c.Apps[:i], c.Apps[i+1:]...)
-			return
+		if (app.SrcPort != 0 && c.Apps[i].Protocol == app.Protocol && c.Apps[i].SrcPort == app.SrcPort) || // normal app
+			(app.SrcPort == 0 && c.Apps[i].SrcPort == 0 && c.Apps[i].PeerNode == app.PeerNode) { // memapp
+			if i == len(c.Apps)-1 {
+				c.Apps = c.Apps[:i]
+			} else {
+				c.Apps = append(c.Apps[:i], c.Apps[i+1:]...)
+			}
+			break
 		}
 	}
+	if app.SrcPort != 0 {
+		c.save()
+	}
 }

 func (c *Config) save() {
-	c.mtx.Lock()
-	defer c.mtx.Unlock()
-	data, _ := json.MarshalIndent(c, "", "  ")
-	err := ioutil.WriteFile("config.json", data, 0644)
-	if err != nil {
-		gLog.Println(LvERROR, "save config.json error:", err)
+	c.fileMtx.Lock()
+	defer c.fileMtx.Unlock()
+	if c.Network.Token == 0 {
+		gLog.e("c.Network.Token == 0 skip save")
+		return
 	}
+	data, err := json.MarshalIndent(c, "", "  ")
+	if err != nil || len(data) < 16 {
+		gLog.e("MarshalIndent config.json error:%v,  len=%d", err, len(data))
+		return
+	}
+	err = os.WriteFile("config.json0", data, 0644)
+	if err != nil {
+		gLog.e("save config.json error:%v", err)
+	}
+
+	// verify if the file is written correctly
+	data, err = os.ReadFile("config.json0")
+	if err != nil {
+		return
+	}
+	var tmpConfig Config
+	err = json.Unmarshal(data, &tmpConfig)
+	if err != nil {
+		gLog.e("parse config.json error:", err)
+		return
+	}
+	err = os.Rename("config.json0", "config.json")
+	if err != nil {
+		gLog.e("rename config file error:%v", err)
+	}
+
 }

+// -d run, then worker serverport always WsPort.
+// func init() {
 func init() {
-	gConf.LogLevel = 1
+	gConf.LogLevel = int(LvINFO)
+	gConf.MaxLogSize = 1024 * 1024
 	gConf.Network.ShareBandwidth = 10
 	gConf.Network.ServerHost = "api.openp2p.cn"
 	gConf.Network.ServerPort = WsPort
@@ -124,21 +295,31 @@ func init() {
 }

 func (c *Config) load() error {
-	c.mtx.Lock()
-	defer c.mtx.Unlock()
-	data, err := ioutil.ReadFile("config.json")
+	c.fileMtx.Lock()
+	defer c.fileMtx.Unlock()
+	data, err := os.ReadFile("config.json")
 	if err != nil {
-		// gLog.Println(LevelERROR, "read config.json error:", err)
 		return err
 	}
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
 	err = json.Unmarshal(data, &c)
 	if err != nil {
-		gLog.Println(LvERROR, "parse config.json error:", err)
+		gLog.e("parse config.json error:", err)
+		return err
 	}
+	var filteredApps []*AppConfig // filter memapp
+	for _, app := range c.Apps {
+		if app.SrcPort != 0 {
+			filteredApps = append(filteredApps, app)
+		}
+	}
+	c.Apps = filteredApps
+	c.Network.natType = NATUnknown
 	return err
 }

-// TODO: deal with multi-thread r/w
+// deal with multi-thread r/w
 func (c *Config) setToken(token uint64) {
 	c.mtx.Lock()
 	defer c.mtx.Unlock()
@@ -155,71 +336,129 @@ func (c *Config) setNode(node string) {
 	c.mtx.Lock()
 	defer c.mtx.Unlock()
 	c.Network.Node = node
+	c.Network.nodeID = NodeNameToID(c.Network.Node)
+}
+func (c *Config) setForcev6(force bool) {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+	c.Forcev6 = force
+}
+func (c *Config) nodeID() uint64 {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+	if c.Network.nodeID == 0 {
+		c.Network.nodeID = NodeNameToID(c.Network.Node)
+	}
+	return c.Network.nodeID
 }
 func (c *Config) setShareBandwidth(bw int) {
 	c.mtx.Lock()
 	defer c.mtx.Unlock()
+	defer c.save()
 	c.Network.ShareBandwidth = bw
 }
+func (c *Config) setIPv6(v6 string) {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+	c.Network.publicIPv6 = v6
+}
+func (c *Config) IPv6() string {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+	return c.Network.publicIPv6
+}

 type NetworkConfig struct {
 	// local info
 	Token           uint64
 	Node            string
+	nodeID          uint64
 	User            string
 	localIP         string
 	mac             string
 	os              string
 	publicIP        string
+	previousIP      string // for publicIP change detect
 	natType         int
 	hasIPv4         int
 	publicIPv6      string // must lowwer-case not save json
 	hasUPNPorNATPMP int
 	ShareBandwidth  int
 	// server info
-	ServerHost string
-	ServerPort int
-	UDPPort1   int
-	UDPPort2   int
-	TCPPort    int
+	ServerHost     string
+	ServerIP       string
+	ServerPort     int
+	natDetectPort1 int
+	natDetectPort2 int
+	PublicIPPort   int // both tcp and udp
+	specTunnel     int
 }

-func parseParams(subCommand string) {
+func parseParams(subCommand string, cmd string) {
 	fset := flag.NewFlagSet(subCommand, flag.ExitOnError)
+	installPath := fset.String("installpath", "", "custom install path")
 	serverHost := fset.String("serverhost", "api.openp2p.cn", "server host ")
+	insecure := fset.Bool("insecure", false, "not verify TLS certificate")
 	serverPort := fset.Int("serverport", WsPort, "server port ")
 	// serverHost := flag.String("serverhost", "127.0.0.1", "server host ") // for debug
 	token := fset.Uint64("token", 0, "token")
 	node := fset.String("node", "", "node name. 8-31 characters. if not set, it will be hostname")
 	peerNode := fset.String("peernode", "", "peer node name that you want to connect")
 	dstIP := fset.String("dstip", "127.0.0.1", "destination ip ")
+	whiteList := fset.String("whitelist", "", "whitelist for p2pApp ")
 	dstPort := fset.Int("dstport", 0, "destination port ")
 	srcPort := fset.Int("srcport", 0, "source port ")
-	tcpPort := fset.Int("tcpport", 0, "tcp port for upnp or publicip")
+	publicIPPort := fset.Int("publicipport", 0, "public ip port for upnp or publicip")
 	protocol := fset.String("protocol", "tcp", "tcp or udp")
+	underlayProtocol := fset.String("underlay_protocol", "quic", "quic or kcp")
+	punchPriority := fset.Int("punch_priority", 0, "bitwise DisableTCP|DisableUDP|UDPFirst  0:tcp and udp both enable, tcp first")
 	appName := fset.String("appname", "", "app name")
+	relayNode := fset.String("relaynode", "", "relaynode")
 	shareBandwidth := fset.Int("sharebandwidth", 10, "N mbps share bandwidth limit, private network no limit")
 	daemonMode := fset.Bool("d", false, "daemonMode")
 	notVerbose := fset.Bool("nv", false, "not log console")
 	newconfig := fset.Bool("newconfig", false, "not load existing config.json")
-	logLevel := fset.Int("loglevel", 0, "0:info 1:warn 2:error 3:debug")
-	if subCommand == "" { // no subcommand
-		fset.Parse(os.Args[1:])
+	logLevel := fset.Int("loglevel", 1, "0:debug 1:info 2:warn 3:error")
+	maxLogSize := fset.Int("maxlogsize", 1024*1024, "default 1MB")
+	if cmd == "" {
+		if subCommand == "" { // no subcommand
+			fset.Parse(os.Args[1:])
+		} else {
+			fset.Parse(os.Args[2:])
+		}
 	} else {
-		fset.Parse(os.Args[2:])
+		args := strings.Split(cmd, " ")
+		fset.Parse(args)
 	}

 	config := AppConfig{Enabled: 1}
 	config.PeerNode = *peerNode
 	config.DstHost = *dstIP
+	config.Whitelist = *whiteList
 	config.DstPort = *dstPort
 	config.SrcPort = *srcPort
 	config.Protocol = *protocol
+	config.UnderlayProtocol = *underlayProtocol
+	config.PunchPriority = *punchPriority
 	config.AppName = *appName
+	config.RelayNode = *relayNode
+	if *installPath != "" {
+		defaultInstallPath = *installPath
+	}
+	if subCommand == "install" {
+		if err := os.MkdirAll(defaultInstallPath, 0775); err != nil {
+			gLog.e("parseParams MkdirAll %s error:%s", defaultInstallPath, err)
+			return
+		}
+		if err := os.Chdir(defaultInstallPath); err != nil {
+			gLog.e("parseParams Chdir error:%s", err)
+			return
+		}
+	}
 	if !*newconfig {
 		gConf.load() // load old config. otherwise will clear all apps
 	}
-	if config.SrcPort != 0 {
+	if config.SrcPort != 0 { // filter memapp
 		gConf.add(config, true)
 	}
 	// gConf.mtx.Lock() // when calling this func it's single-thread no lock
@@ -230,7 +469,7 @@ func parseParams(subCommand string) {
 			gConf.Network.ShareBandwidth = *shareBandwidth
 		}
 		if f.Name == "node" {
-			gConf.Network.Node = *node
+			gConf.setNode(*node)
 		}
 		if f.Name == "serverhost" {
 			gConf.Network.ServerHost = *serverHost
@@ -238,43 +477,62 @@ func parseParams(subCommand string) {
 		if f.Name == "loglevel" {
 			gConf.LogLevel = *logLevel
 		}
-		if f.Name == "tcpport" {
-			gConf.Network.TCPPort = *tcpPort
+		if f.Name == "maxlogsize" {
+			gConf.MaxLogSize = *maxLogSize
+		}
+		if f.Name == "publicipport" {
+			gConf.Network.PublicIPPort = *publicIPPort
 		}
 		if f.Name == "token" {
 			gConf.setToken(*token)
 		}
+		if f.Name == "serverport" {
+			gConf.Network.ServerPort = *serverPort
+		}
+		if f.Name == "insecure" {
+			gConf.TLSInsecureSkipVerify = *insecure
+		}
 	})
-
+	// set default value
 	if gConf.Network.ServerHost == "" {
 		gConf.Network.ServerHost = *serverHost
 	}
+	if gConf.Network.ServerPort == 0 {
+		gConf.Network.ServerPort = *serverPort
+	}
 	if *node != "" {
-		if len(*node) < MinNodeNameLen {
-			gLog.Println(LvERROR, ErrNodeTooShort)
-			os.Exit(9)
-		}
-		gConf.Network.Node = *node
+		gConf.setNode(*node)
 	} else {
+		envNode := os.Getenv("OPENP2P_NODE")
+		if envNode != "" {
+			gConf.setNode(envNode)
+		}
 		if gConf.Network.Node == "" { // if node name not set. use os.Hostname
-			gConf.Network.Node = defaultNodeName()
+			gConf.setNode(defaultNodeName())
 		}
 	}
-	if gConf.Network.TCPPort == 0 {
-		if *tcpPort == 0 {
-			p := int(nodeNameToID(gConf.Network.Node)%15000 + 50000)
-			tcpPort = &p
+	if gConf.Network.PublicIPPort == 0 {
+		if *publicIPPort == 0 {
+			p := int(gConf.nodeID()%8192 + 1025)
+			publicIPPort = &p
+		}
+		gConf.Network.PublicIPPort = *publicIPPort
+	}
+	if *token == 0 {
+		envToken := os.Getenv("OPENP2P_TOKEN")
+		if envToken != "" {
+			if n, err := strconv.ParseUint(envToken, 10, 64); n != 0 && err == nil {
+				gConf.setToken(n)
+			}
 		}
-		gConf.Network.TCPPort = *tcpPort
 	}

-	gConf.Network.ServerPort = *serverPort
-	gConf.Network.UDPPort1 = UDPPort1
-	gConf.Network.UDPPort2 = UDPPort2
+	gConf.Network.natDetectPort1 = NATDetectPort1
+	gConf.Network.natDetectPort2 = NATDetectPort2
 	gLog.setLevel(LogLevel(gConf.LogLevel))
+	gLog.setMaxSize(int64(gConf.MaxLogSize))
 	if *notVerbose {
 		gLog.setMode(LogFile)
 	}
-	// gConf.mtx.Unlock()
 	gConf.save()
 }
--- a/core/config_test.go
+++ b/core/config_test.go
@@ -0,0 +1,178 @@
+package openp2p
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+func TestSetSDWAN_ChangeNode(t *testing.T) {
+	conf := Config{}
+	sdwanInfo := SDWANInfo{}
+	sdwanStr := `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"},{"name":"tony-stable","ip":"10.2.3.4","resource":"10.1.0.0/16"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo)
+	if len(conf.getDelNodes()) > 0 {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	if len(conf.getAddNodes()) != 7 {
+		t.Errorf("getAddNodes error")
+		return
+	}
+	sdwanInfo2 := SDWANInfo{}
+	sdwanStr = `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo2); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo2)
+	diff := conf.getDelNodes()
+	if len(diff) != 1 && diff[0].IP != "10.2.3.4" {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	sdwanInfo3 := SDWANInfo{}
+	sdwanStr = `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo3); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo3)
+	diff = conf.getDelNodes()
+	if len(diff) != 1 && diff[0].IP != "10.2.3.60" {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	// add new node
+	sdwanInfo4 := SDWANInfo{}
+	sdwanStr = `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo4); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo4)
+	diff = conf.getDelNodes()
+	if len(diff) > 0 {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	diff = conf.getAddNodes()
+	if len(diff) != 1 && diff[0].IP != "10.2.3.60" {
+		t.Errorf("getAddNodes error")
+		return
+	}
+}
+
+func TestSetSDWAN_ChangeNodeIP(t *testing.T) {
+	conf := Config{}
+	sdwanInfo := SDWANInfo{}
+	sdwanStr := `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"},{"name":"tony-stable","ip":"10.2.3.4","resource":"10.1.0.0/16"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo)
+	if len(conf.getDelNodes()) > 0 {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	sdwanInfo2 := SDWANInfo{}
+	sdwanStr = `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"},{"name":"tony-stable","ip":"10.2.3.44","resource":"10.1.0.0/16"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo2); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo2)
+	diff := conf.getDelNodes()
+	if len(diff) != 1 && diff[0].IP != "10.2.3.4" {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	diff = conf.getAddNodes()
+	if len(diff) != 1 || diff[0].IP != "10.2.3.44" {
+		t.Errorf("getAddNodes error")
+		return
+	}
+}
+func TestSetSDWAN_ClearAll(t *testing.T) {
+	conf := Config{}
+	sdwanInfo := SDWANInfo{}
+	sdwanStr := `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"},{"name":"tony-stable","ip":"10.2.3.4","resource":"10.1.0.0/16"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo)
+	if len(conf.getDelNodes()) > 0 {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	sdwanInfo2 := SDWANInfo{}
+	sdwanStr = `{"Nodes":null}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo2); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo2)
+	diff := conf.getDelNodes()
+	if len(diff) != 7 {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	diff = conf.getAddNodes()
+	if len(diff) != 0 {
+		t.Errorf("getAddNodes error")
+		return
+	}
+}
+func TestSetSDWAN_ChangeNodeResource(t *testing.T) {
+	conf := Config{}
+	sdwanInfo := SDWANInfo{}
+	sdwanStr := `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"},{"name":"tony-stable","ip":"10.2.3.4","resource":"10.1.0.0/16"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo)
+	if len(conf.getDelNodes()) > 0 {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	sdwanInfo2 := SDWANInfo{}
+	sdwanStr = `{"id":1312667996276071700,"name":"network1","gateway":"10.2.3.254/24","mode":"fullmesh","centralNode":"n1-stable","enable":1,"Nodes":[{"name":"222-debug","ip":"10.2.3.13"},{"name":"222stable","ip":"10.2.3.222"},{"name":"5800-debug","ip":"10.2.3.56"},{"name":"Mate60pro","ip":"10.2.3.60"},{"name":"Mymatepad2023","ip":"10.2.3.23"},{"name":"n1-stable","ip":"10.2.3.29","resource":"192.168.3.0/24"},{"name":"tony-stable","ip":"10.2.3.4","resource":"10.11.0.0/16"}]}`
+	if err := json.Unmarshal([]byte(sdwanStr), &sdwanInfo2); err != nil {
+		t.Errorf("unmarshal error")
+		return
+	}
+
+	conf.setSDWAN(sdwanInfo2)
+	diff := conf.getDelNodes()
+	if len(diff) != 1 && diff[0].IP != "10.2.3.4" {
+		t.Errorf("getDelNodes error")
+		return
+	}
+	diff = conf.getAddNodes()
+	if len(diff) != 1 || diff[0].Resource != "10.11.0.0/16" {
+		t.Errorf("getAddNodes error")
+		return
+	}
+}
+
+func TestInetAtoN(t *testing.T) {
+	ipa, _ := inetAtoN("121.5.147.4")
+	t.Log(ipa)
+	ipa, _ = inetAtoN("121.5.147.4/32")
+	t.Log(ipa)
+}
--- a/core/daemon.go
+++ b/core/daemon.go
@@ -1,115 +1,186 @@
-package openp2p
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"time"
-
-	"github.com/openp2p-cn/service"
-)
-
-type daemon struct {
-	running bool
-	proc    *os.Process
-}
-
-func (d *daemon) Start(s service.Service) error {
-	gLog.Println(LvINFO, "daemon start")
-	return nil
-}
-
-func (d *daemon) Stop(s service.Service) error {
-	gLog.Println(LvINFO, "service stop")
-	d.running = false
-	if d.proc != nil {
-		gLog.Println(LvINFO, "stop worker")
-		d.proc.Kill()
-	}
-	if service.Interactive() {
-		gLog.Println(LvINFO, "stop daemon")
-		os.Exit(0)
-	}
-	return nil
-}
-
-func (d *daemon) run() {
-	gLog.Println(LvINFO, "daemon run start")
-	defer gLog.Println(LvINFO, "daemon run end")
-	d.running = true
-	binPath, _ := os.Executable()
-	mydir, err := os.Getwd()
-	if err != nil {
-		fmt.Println(err)
-	}
-	gLog.Println(LvINFO, mydir)
-	conf := &service.Config{
-		Name:        ProductName,
-		DisplayName: ProductName,
-		Description: ProductName,
-		Executable:  binPath,
-	}
-
-	s, _ := service.New(d, conf)
-	go s.Run()
-	var args []string
-	// rm -d parameter
-	for i := 0; i < len(os.Args); i++ {
-		if os.Args[i] == "-d" {
-			args = append(os.Args[0:i], os.Args[i+1:]...)
-			break
-		}
-	}
-	args = append(args, "-nv")
-	for {
-		// start worker
-		tmpDump := filepath.Join("log", "dump.log.tmp")
-		dumpFile := filepath.Join("log", "dump.log")
-		f, err := os.Create(filepath.Join(tmpDump))
-		if err != nil {
-			gLog.Printf(LvERROR, "start worker error:%s", err)
-			return
-		}
-		gLog.Println(LvINFO, "start worker process, args:", args)
-		execSpec := &os.ProcAttr{Env: append(os.Environ(), "GOTRACEBACK=crash"), Files: []*os.File{os.Stdin, os.Stdout, f}}
-		p, err := os.StartProcess(binPath, args, execSpec)
-		if err != nil {
-			gLog.Printf(LvERROR, "start worker error:%s", err)
-			return
-		}
-		d.proc = p
-		_, _ = p.Wait()
-		f.Close()
-		time.Sleep(time.Second)
-		err = os.Rename(tmpDump, dumpFile)
-		if err != nil {
-			gLog.Printf(LvERROR, "rename dump error:%s", err)
-		}
-		if !d.running {
-			return
-		}
-		gLog.Printf(LvERROR, "worker stop, restart it after 10s")
-		time.Sleep(time.Second * 10)
-	}
-}
-
-func (d *daemon) Control(ctrlComm string, exeAbsPath string, args []string) error {
-	svcConfig := &service.Config{
-		Name:        ProductName,
-		DisplayName: ProductName,
-		Description: ProductName,
-		Executable:  exeAbsPath,
-		Arguments:   args,
-	}
-
-	s, e := service.New(d, svcConfig)
-	if e != nil {
-		return e
-	}
-	e = service.Control(s, ctrlComm)
-	if e != nil {
-		return e
-	}
-
-	return nil
-}
+package openp2p
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"time"
+
+	"github.com/openp2p-cn/service"
+)
+
+type daemon struct {
+	running bool
+	proc    *os.Process
+}
+
+func (d *daemon) Start(s service.Service) error {
+	gLog.i("system service start")
+	return nil
+}
+
+func (d *daemon) Stop(s service.Service) error {
+	gLog.i("system service stop")
+	d.running = false
+	if d.proc != nil {
+		gLog.i("stop worker")
+		d.proc.Kill()
+	}
+	if service.Interactive() {
+		gLog.i("stop daemon")
+		os.Exit(0)
+	}
+	return nil
+}
+
+func (d *daemon) run() {
+	gLog.close()
+	baseDir := filepath.Dir(os.Args[0])
+	gLog = NewLogger(baseDir, "daemon", LogLevel(gConf.LogLevel), 1024*1024, LogFile|LogConsole)
+	gLog.i("daemon run start")
+	defer gLog.i("daemon run end")
+	d.running = true
+	binPath, _ := os.Executable()
+	conf := &service.Config{
+		Name:        ProductName,
+		DisplayName: ProductName,
+		Description: ProductName,
+		Executable:  binPath,
+	}
+
+	s, _ := service.New(d, conf)
+	go s.Run()
+	var args []string
+	// rm -d parameter
+	for i := 0; i < len(os.Args); i++ {
+		if os.Args[i] == "-d" {
+			args = append(os.Args[0:i], os.Args[i+1:]...)
+			break
+		}
+	}
+
+	args = append(args, "-nv")
+	for {
+		// start worker
+		tmpDump := filepath.Join(filepath.Dir(binPath), "log", "dump.log.tmp")
+		dumpFile := filepath.Join(filepath.Dir(binPath), "log", "dump.log")
+		// f, err := os.Create(filepath.Join(tmpDump))
+		f, err := os.OpenFile(filepath.Join(tmpDump), os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0775)
+		if err != nil {
+			gLog.e("OpenFile %s error:%s", tmpDump, err)
+			return
+		}
+		gLog.i("start worker process, args:%v", args)
+		execSpec := &os.ProcAttr{Env: append(os.Environ(), "GOTRACEBACK=crash"), Files: []*os.File{os.Stdin, os.Stdout, f}}
+		lastRebootTime := time.Now()
+		p, err := os.StartProcess(binPath, args, execSpec)
+		if err != nil {
+			gLog.e("start worker error:%s", err)
+			return
+		}
+		d.proc = p
+		processState, err := p.Wait()
+		if err != nil {
+			gLog.e("wait process error:%s", err)
+		}
+
+		if processState != nil {
+			exitCode := processState.ExitCode()
+			gLog.i("worker process exited with code: %d", exitCode)
+
+			if exitCode == 9 {
+				gLog.i("worker process update with code: %d", exitCode)
+				// os.Exit(9) // old client installed system service will not auto restart. fuck
+			}
+		}
+		// Write the current time to the end of the dump file
+		currentTime := time.Now().Format("2006-01-02 15:04:05")
+		_, err = f.WriteString("\nProcess ended at: " + currentTime + "\n")
+		if err != nil {
+			gLog.e("Failed to write time to dump file: %s", err)
+		}
+
+		f.Close()
+		time.Sleep(time.Second)
+		err = os.Rename(tmpDump, dumpFile)
+		if err != nil {
+			gLog.e("rename dump error:%s", err)
+		}
+		if !d.running {
+			return
+		}
+		if time.Since(lastRebootTime) < time.Second*10 {
+			gLog.e("worker stop, restart it after 10s")
+			time.Sleep(time.Second * 10)
+		}
+
+	}
+}
+
+func (d *daemon) Control(ctrlComm string, exeAbsPath string, args []string) error {
+	svcConfig := getServiceConfig(exeAbsPath, args)
+
+	s, e := service.New(d, svcConfig)
+	if e != nil {
+		return e
+	}
+	e = service.Control(s, ctrlComm)
+	if e != nil {
+		return e
+	}
+
+	return nil
+}
+
+func getServiceConfig(exeAbsPath string, args []string) *service.Config {
+	config := &service.Config{
+		Name:        ProductName,
+		DisplayName: ProductName,
+		Description: ProductName,
+		Executable:  exeAbsPath,
+		Arguments:   args,
+		Option:      make(map[string]interface{}),
+	}
+
+	if runtime.GOOS == "windows" {
+		setupWindowsConfig(config)
+	} else {
+		setupLinuxConfig(config)
+	}
+
+	return config
+}
+
+func setupWindowsConfig(config *service.Config) {
+	failureActions := []map[string]interface{}{
+		{
+			"Type":  "restart",
+			"Delay": "10000",
+		},
+		{
+			"Type":  "restart",
+			"Delay": "10000",
+		},
+		{
+			"Type":  "restart",
+			"Delay": "10000",
+		},
+	}
+
+	config.Option = map[string]interface{}{
+		"OnFailure":            "restart",
+		"OnFailureDelay":       "10s",
+		"OnFailureResetPeriod": "3600",
+		"FailureActions":       failureActions,
+		"DelayedAutoStart":     true,
+	}
+}
+
+func setupLinuxConfig(config *service.Config) {
+	config.Option = map[string]interface{}{
+		"Restart":           "always",
+		"RestartSec":        "10",
+		"StartLimitBurst":   64,
+		"SuccessExitStatus": "1 2 8 SIGKILL",
+	}
+}
--- a/core/errorcode.go
+++ b/core/errorcode.go
@@ -13,8 +13,24 @@ var (
 	ErrorNewUser             = errors.New("new user")
 	ErrorLogin               = errors.New("user or password not correct")
 	ErrNodeTooShort          = errors.New("node name too short, it must >=8 charaters")
+	ErrReadDB                = errors.New("read db error")
+	ErrNoUpdate              = errors.New("there are currently no updates available")
 	ErrPeerOffline           = errors.New("peer offline")
+	ErrNetwork               = errors.New("network error")
 	ErrMsgFormat             = errors.New("message format wrong")
 	ErrVersionNotCompatible  = errors.New("version not compatible")
 	ErrOverlayConnDisconnect = errors.New("overlay connection is disconnected")
+	ErrConnectRelayNode      = errors.New("connect relay node error")
+	ErrConnectPublicV4       = errors.New("connect public ipv4 error")
+	ErrMsgChannelNotFound    = errors.New("message channel not found")
+	ErrRelayTunnelNotFound   = errors.New("relay tunnel not found")
+	ErrSymmetricLimit        = errors.New("symmetric limit")
+	ErrForceRelay            = errors.New("force relay")
+	ErrPeerConnectRelay      = errors.New("peer connect relayNode error")
+	ErrBuildTunnelBusy       = errors.New("build tunnel busy")
+	ErrMemAppTunnelNotFound  = errors.New("memapp tunnel not found")
+	ErrRemoteServiceUnable   = errors.New("remote service unable")
+	ErrAppWithoutTunnel      = errors.New("p2papp has no available tunnel")
+	ErrWriteWindowFull       = errors.New("writeWindow full")
+	ErrHeaderDataLen         = errors.New("header datalen error")
 )
--- a/core/handlepush.go
+++ b/core/handlepush.go
@@ -1,294 +1,573 @@
-package openp2p
-
-import (
-	"bytes"
-	"encoding/binary"
-	"encoding/json"
-	"fmt"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"time"
-
-	"github.com/openp2p-cn/totp"
-)
-
-func handlePush(pn *P2PNetwork, subType uint16, msg []byte) error {
-	pushHead := PushHeader{}
-	err := binary.Read(bytes.NewReader(msg[openP2PHeaderSize:openP2PHeaderSize+PushHeaderSize]), binary.LittleEndian, &pushHead)
-	if err != nil {
-		return err
-	}
-	gLog.Printf(LvDEBUG, "handle push msg type:%d, push header:%+v", subType, pushHead)
-	switch subType {
-	case MsgPushConnectReq: // TODO: handle a msg move to a new function
-		req := PushConnectReq{}
-		err := json.Unmarshal(msg[openP2PHeaderSize+PushHeaderSize:], &req)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong MsgPushConnectReq:%s", err)
-			return err
-		}
-		gLog.Printf(LvDEBUG, "%s is connecting...", req.From)
-		gLog.Println(LvDEBUG, "push connect response to ", req.From)
-		if compareVersion(req.Version, LeastSupportVersion) == LESS {
-			gLog.Println(LvERROR, ErrVersionNotCompatible.Error(), ":", req.From)
-			rsp := PushConnectRsp{
-				Error:  10,
-				Detail: ErrVersionNotCompatible.Error(),
-				To:     req.From,
-				From:   pn.config.Node,
-			}
-			pn.push(req.From, MsgPushConnectRsp, rsp)
-			return ErrVersionNotCompatible
-		}
-		// verify totp token or token
-		t := totp.TOTP{Step: totp.RelayTOTPStep}
-		if t.Verify(req.Token, pn.config.Token, time.Now().Unix()+(pn.serverTs-pn.localTs)) || // localTs may behind, auto adjust ts
-			t.Verify(req.Token, pn.config.Token, time.Now().Unix()) {
-			gLog.Printf(LvINFO, "Access Granted\n")
-			config := AppConfig{}
-			config.peerNatType = req.NatType
-			config.peerConeNatPort = req.ConeNatPort
-			config.peerIP = req.FromIP
-			config.PeerNode = req.From
-			config.peerVersion = req.Version
-			config.fromToken = req.Token
-			config.peerIPv6 = req.IPv6
-			config.hasIPv4 = req.HasIPv4
-			config.hasUPNPorNATPMP = req.HasUPNPorNATPMP
-			config.linkMode = req.LinkMode
-			config.isUnderlayServer = req.IsUnderlayServer
-			// share relay node will limit bandwidth
-			if req.Token != pn.config.Token {
-				gLog.Printf(LvINFO, "set share bandwidth %d mbps", pn.config.ShareBandwidth)
-				config.shareBandwidth = pn.config.ShareBandwidth
-			}
-			// go pn.AddTunnel(config, req.ID)
-			go pn.addDirectTunnel(config, req.ID)
-			break
-		}
-		gLog.Println(LvERROR, "Access Denied:", req.From)
-		rsp := PushConnectRsp{
-			Error:  1,
-			Detail: fmt.Sprintf("connect to %s error: Access Denied", pn.config.Node),
-			To:     req.From,
-			From:   pn.config.Node,
-		}
-		pn.push(req.From, MsgPushConnectRsp, rsp)
-	case MsgPushRsp:
-		rsp := PushRsp{}
-		err := json.Unmarshal(msg[openP2PHeaderSize:], &rsp)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong pushRsp:%s", err)
-			return err
-		}
-		if rsp.Error == 0 {
-			gLog.Printf(LvDEBUG, "push ok, detail:%s", rsp.Detail)
-		} else {
-			gLog.Printf(LvERROR, "push error:%d, detail:%s", rsp.Error, rsp.Detail)
-		}
-	case MsgPushAddRelayTunnelReq:
-		req := AddRelayTunnelReq{}
-		err := json.Unmarshal(msg[openP2PHeaderSize+PushHeaderSize:], &req)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong RelayNodeRsp:%s", err)
-			return err
-		}
-		config := AppConfig{}
-		config.PeerNode = req.RelayName
-		config.peerToken = req.RelayToken
-		go func(r AddRelayTunnelReq) {
-			t, errDt := pn.addDirectTunnel(config, 0)
-			if errDt == nil {
-				// notify peer relay ready
-				msg := TunnelMsg{ID: t.id}
-				pn.push(r.From, MsgPushAddRelayTunnelRsp, msg)
-			}
-		}(req)
-	case MsgPushAPPKey:
-		req := APPKeySync{}
-		err := json.Unmarshal(msg[openP2PHeaderSize+PushHeaderSize:], &req)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong APPKeySync:%s", err)
-			return err
-		}
-		SaveKey(req.AppID, req.AppKey)
-	case MsgPushUpdate:
-		gLog.Println(LvINFO, "MsgPushUpdate")
-		update(pn.config.ServerHost, pn.config.ServerPort) // download new version first, then exec ./openp2p update
-		targetPath := filepath.Join(defaultInstallPath, defaultBinName)
-		args := []string{"update"}
-		env := os.Environ()
-		cmd := exec.Command(targetPath, args...)
-		cmd.Stdout = os.Stdout
-		cmd.Stderr = os.Stderr
-		cmd.Stdin = os.Stdin
-		cmd.Env = env
-		err := cmd.Run()
-		if err == nil {
-			os.Exit(0)
-		}
-		return err
-	case MsgPushRestart:
-		gLog.Println(LvINFO, "MsgPushRestart")
-		os.Exit(0)
-		return err
-	case MsgPushReportApps:
-		gLog.Println(LvINFO, "MsgPushReportApps")
-		req := ReportApps{}
-		gConf.mtx.Lock()
-		defer gConf.mtx.Unlock()
-		for _, config := range gConf.Apps {
-			appActive := 0
-			relayNode := ""
-			relayMode := ""
-			linkMode := LinkModeUDPPunch
-			i, ok := pn.apps.Load(fmt.Sprintf("%s%d", config.Protocol, config.SrcPort))
-			if ok {
-				app := i.(*p2pApp)
-				if app.isActive() {
-					appActive = 1
-				}
-				relayNode = app.relayNode
-				relayMode = app.relayMode
-				linkMode = app.tunnel.linkModeWeb
-			}
-			appInfo := AppInfo{
-				AppName:     config.AppName,
-				Error:       config.errMsg,
-				Protocol:    config.Protocol,
-				SrcPort:     config.SrcPort,
-				RelayNode:   relayNode,
-				RelayMode:   relayMode,
-				LinkMode:    linkMode,
-				PeerNode:    config.PeerNode,
-				DstHost:     config.DstHost,
-				DstPort:     config.DstPort,
-				PeerUser:    config.PeerUser,
-				PeerIP:      config.peerIP,
-				PeerNatType: config.peerNatType,
-				RetryTime:   config.retryTime.Local().Format("2006-01-02T15:04:05-0700"),
-				ConnectTime: config.connectTime.Local().Format("2006-01-02T15:04:05-0700"),
-				IsActive:    appActive,
-				Enabled:     config.Enabled,
-			}
-			req.Apps = append(req.Apps, appInfo)
-		}
-		pn.write(MsgReport, MsgReportApps, &req)
-	case MsgPushReportLog:
-		gLog.Println(LvDEBUG, "MsgPushReportLog")
-		req := ReportLogReq{}
-		err := json.Unmarshal(msg[openP2PHeaderSize:], &req)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong MsgPushReportLog:%s  %s", err, string(msg[openP2PHeaderSize:]))
-			return err
-		}
-		if req.FileName == "" {
-			req.FileName = "openp2p.log"
-		}
-		f, err := os.Open(filepath.Join("log", req.FileName))
-		if err != nil {
-			gLog.Println(LvERROR, "read log file error:", err)
-			break
-		}
-		fi, err := f.Stat()
-		if err != nil {
-			break
-		}
-		if req.Offset == 0 && fi.Size() > 4096 {
-			req.Offset = fi.Size() - 4096
-		}
-		if req.Len <= 0 {
-			req.Len = 4096
-		}
-		f.Seek(req.Offset, 0)
-		if req.Len > 1024*1024 { // too large
-			break
-		}
-		buff := make([]byte, req.Len)
-		readLength, err := f.Read(buff)
-		f.Close()
-		if err != nil {
-			gLog.Println(LvERROR, "read log content error:", err)
-			break
-		}
-		rsp := ReportLogRsp{}
-		rsp.Content = string(buff[:readLength])
-		rsp.FileName = req.FileName
-		rsp.Total = fi.Size()
-		rsp.Len = req.Len
-		pn.write(MsgReport, MsgPushReportLog, &rsp)
-	case MsgPushEditApp:
-		gLog.Println(LvINFO, "MsgPushEditApp")
-		newApp := AppInfo{}
-		err := json.Unmarshal(msg[openP2PHeaderSize:], &newApp)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong MsgPushEditApp:%s  %s", err, string(msg[openP2PHeaderSize:]))
-			return err
-		}
-		oldConf := AppConfig{Enabled: 1}
-		// protocol0+srcPort0 exist, delApp
-		oldConf.AppName = newApp.AppName
-		oldConf.Protocol = newApp.Protocol0
-		oldConf.SrcPort = newApp.SrcPort0
-		oldConf.PeerNode = newApp.PeerNode
-		oldConf.DstHost = newApp.DstHost
-		oldConf.DstPort = newApp.DstPort
-
-		gConf.delete(oldConf)
-		// AddApp
-		newConf := oldConf
-		newConf.Protocol = newApp.Protocol
-		newConf.SrcPort = newApp.SrcPort
-		gConf.add(newConf, false)
-		gConf.save()          // save quickly for the next request reportApplist
-		pn.DeleteApp(oldConf) // DeleteApp may cost some times, execute at the end
-		// autoReconnect will auto AddApp
-		// pn.AddApp(config)
-		// TODO: report result
-	case MsgPushEditNode:
-		gLog.Println(LvINFO, "MsgPushEditNode")
-		req := EditNode{}
-		err := json.Unmarshal(msg[openP2PHeaderSize:], &req)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong MsgPushEditNode:%s  %s", err, string(msg[openP2PHeaderSize:]))
-			return err
-		}
-		gConf.setNode(req.NewName)
-		gConf.setShareBandwidth(req.Bandwidth)
-		gConf.save()
-		// TODO: hot reload
-		os.Exit(0)
-	case MsgPushSwitchApp:
-		gLog.Println(LvINFO, "MsgPushSwitchApp")
-		app := AppInfo{}
-		err := json.Unmarshal(msg[openP2PHeaderSize:], &app)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong MsgPushSwitchApp:%s  %s", err, string(msg[openP2PHeaderSize:]))
-			return err
-		}
-		config := AppConfig{Enabled: app.Enabled, SrcPort: app.SrcPort, Protocol: app.Protocol}
-		gLog.Println(LvINFO, app.AppName, " switch to ", app.Enabled)
-		gConf.switchApp(config, app.Enabled)
-		if app.Enabled == 0 {
-			// disable APP
-			pn.DeleteApp(config)
-		}
-	case MsgPushDstNodeOnline:
-		gLog.Println(LvINFO, "MsgPushDstNodeOnline")
-		app := PushDstNodeOnline{}
-		err := json.Unmarshal(msg[openP2PHeaderSize:], &app)
-		if err != nil {
-			gLog.Printf(LvERROR, "wrong MsgPushDstNodeOnline:%s  %s", err, string(msg[openP2PHeaderSize:]))
-			return err
-		}
-		gLog.Println(LvINFO, "retry peerNode ", app.Node)
-		gConf.retryApp(app.Node)
-	default:
-		pn.msgMapMtx.Lock()
-		ch := pn.msgMap[pushHead.From]
-		pn.msgMapMtx.Unlock()
-		ch <- msg
-	}
-	return nil
-}
+package openp2p
+
+import (
+	"bytes"
+	"encoding/binary"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net"
+	"os"
+	"path/filepath"
+	"reflect"
+	"runtime"
+	"runtime/pprof"
+	"time"
+
+	"github.com/openp2p-cn/totp"
+)
+
+func handlePush(subType uint16, msg []byte) error {
+	pushHead := PushHeader{}
+	err := binary.Read(bytes.NewReader(msg[openP2PHeaderSize:openP2PHeaderSize+PushHeaderSize]), binary.LittleEndian, &pushHead)
+	if err != nil {
+		return err
+	}
+	// gLog.d("handle push msg type:%d, push header:%+v", subType, pushHead)
+	switch subType {
+	case MsgPushConnectReq:
+		err = handleConnectReq(msg)
+	case MsgPushRsp:
+		rsp := PushRsp{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize:], &rsp); err != nil {
+			gLog.e("Unmarshal pushRsp:%s", err)
+			return err
+		}
+		if rsp.Error == 0 {
+			gLog.dev("push ok, detail:%s", rsp.Detail)
+		} else {
+			gLog.e("push error:%d, detail:%s", rsp.Error, rsp.Detail)
+		}
+	case MsgPushAddRelayTunnelReq:
+		req := AddRelayTunnelReq{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize+PushHeaderSize:], &req); err != nil {
+			gLog.e("Unmarshal %v:%s", reflect.TypeOf(req), err)
+			return err
+		}
+		config := AppConfig{}
+		config.PeerNode = req.RelayName
+		config.peerToken = req.RelayToken
+		config.relayMode = req.RelayMode
+		config.PunchPriority = req.PunchPriority
+		config.UnderlayProtocol = req.UnderlayProtocol
+		go func(r AddRelayTunnelReq) {
+			t, errDt := GNetwork.addDirectTunnel(config, 0, nil)
+			if errDt == nil && t != nil {
+				// notify peer relay ready
+				msg := TunnelMsg{ID: t.id}
+				GNetwork.push(r.From, MsgPushAddRelayTunnelRsp, msg)
+				appConfig := config
+				appConfig.PeerNode = req.From
+			} else {
+				gLog.w("addDirectTunnel error:%s", errDt)
+				GNetwork.push(r.From, MsgPushAddRelayTunnelRsp, "error") // compatible with old version client, trigger unmarshal error
+			}
+		}(req)
+	case MsgPushServerSideSaveMemApp:
+		req := ServerSideSaveMemApp{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize+PushHeaderSize:], &req); err != nil {
+			gLog.e("Unmarshal %v:%s", reflect.TypeOf(req), err)
+			return err
+		}
+		gLog.d("handle MsgPushServerSideSaveMemApp:%s", prettyJson(req))
+		if req.RelayIndex > uint32(gConf.sdwan.TunnelNum-1) {
+			return errors.New("wrong relay index")
+		}
+		var existTunnel *P2PTunnel
+		i, ok := GNetwork.allTunnels.Load(req.TunnelID)
+		if !ok {
+			time.Sleep(time.Millisecond * 3000)
+			i, ok = GNetwork.allTunnels.Load(req.TunnelID) // retry sometimes will receive MsgPushServerSideSaveMemApp but p2ptunnel not store yet.
+			if !ok {
+				gLog.e("handle MsgPushServerSideSaveMemApp error:%s", ErrMemAppTunnelNotFound)
+				return ErrMemAppTunnelNotFound
+			}
+		}
+		existTunnel = i.(*P2PTunnel)
+		peerID := NodeNameToID(req.From)
+		appIdx := peerID
+		if req.SrcPort != 0 {
+			appIdx = req.AppID
+		}
+		existApp, appok := GNetwork.apps.Load(appIdx)
+		var app *p2pApp
+		if appok {
+			app = existApp.(*p2pApp)
+			if app.tunnelNum != int(req.TunnelNum) {
+				gLog.d("memapp tunnelNum changed from %d to %d", app.tunnelNum, req.TunnelNum)
+				GNetwork.DeleteApp(app.config)
+				app = nil
+			}
+		}
+		if app != nil {
+			app.config.AppName = fmt.Sprintf("%d", peerID)
+			app.id = req.AppID
+			app.key = req.AppKey
+			app.PreCalcKeyBytes()
+			app.relayMode[req.RelayIndex] = req.RelayMode
+			app.hbTime[req.RelayIndex] = time.Now()
+			app.SetTunnel(existTunnel, int(req.RelayIndex))
+			if req.RelayTunnelID != 0 {
+				app.SetRelayTunnelID(req.RelayTunnelID, int(req.RelayIndex)) // direct tunnel rtid=0, no need set rtid
+			}
+			gLog.d("found existing memapp, update it")
+		} else {
+			appConfig := existTunnel.config
+			appConfig.SrcPort = int(req.SrcPort)
+			appConfig.Protocol = ""
+			appConfig.AppName = fmt.Sprintf("%d", peerID)
+			appConfig.PeerNode = req.From
+			app = &p2pApp{
+				id:      req.AppID,
+				config:  appConfig,
+				running: true,
+				// asyncWriteChan: make(chan []byte, WriteDataChanSize),
+				key: req.AppKey,
+			}
+			app.PreCalcKeyBytes()
+			tunnelNum := 2
+			if req.TunnelNum > uint32(tunnelNum) {
+				tunnelNum = int(req.TunnelNum)
+			}
+			app.Init(tunnelNum)
+			app.relayMode[req.RelayIndex] = req.RelayMode
+			app.hbTime[req.RelayIndex] = time.Now()
+			app.SetTunnel(existTunnel, int(req.RelayIndex))
+			if req.RelayTunnelID != 0 {
+				app.SetRelayTunnelID(req.RelayTunnelID, int(req.RelayIndex))
+				app.relayNode[req.RelayIndex] = req.Node
+			}
+			app.Start(false)
+			GNetwork.apps.Store(appIdx, app)
+			gLog.d("store memapp %d %d", appIdx, req.SrcPort)
+		}
+
+		return nil
+	case MsgPushUpdate:
+		gLog.i("MsgPushUpdate")
+		err := update(gConf.Network.ServerHost, gConf.Network.ServerPort)
+		if err == nil {
+			os.Exit(9) // 9 tell daemon this exit because of update
+		}
+		return err
+	case MsgPushRestart:
+		gLog.i("MsgPushRestart")
+		os.Exit(0)
+		return err
+	case MsgPushReportApps:
+		err = handleReportApps()
+	case MsgPushReportMemApps:
+		err = handleReportMemApps()
+	case MsgPushReportLog:
+		err = handleLog(msg)
+	case MsgPushReportGoroutine:
+		err = handleReportGoroutine()
+	case MsgPushReportHeap:
+		err = handleReportHeap()
+	case MsgPushCheckRemoteService:
+		err = handleCheckRemoteService(msg)
+	case MsgPushEditApp:
+		err = handleEditApp(msg)
+	case MsgPushEditNode:
+		gLog.i("MsgPushEditNode")
+		req := EditNode{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize:], &req); err != nil {
+			gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(req), err, string(msg[openP2PHeaderSize:]))
+			return err
+		}
+		gConf.setNode(req.NewName)
+		gConf.setShareBandwidth(req.Bandwidth)
+		if req.PublicIPPort != 0 {
+			gConf.Network.PublicIPPort = req.PublicIPPort
+		}
+		gConf.Forcev6 = (req.Forcev6 != 0)
+		gLog.i("set forcev6 to %v", gConf.Forcev6)
+		gConf.save()
+		os.Exit(0)
+	case MsgPushSwitchApp:
+		gLog.i("MsgPushSwitchApp")
+		app := AppInfo{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize:], &app); err != nil {
+			gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(app), err, string(msg[openP2PHeaderSize:]))
+			return err
+		}
+		config := AppConfig{PeerNode: app.PeerNode, Enabled: app.Enabled, SrcPort: app.SrcPort, Protocol: app.Protocol}
+		gLog.i("%s switch to %d", app.AppName, app.Enabled)
+		gConf.switchApp(config, app.Enabled)
+		if app.Enabled == 0 {
+			// disable APP
+			GNetwork.DeleteApp(config)
+		}
+	case MsgPushDstNodeOnline:
+		req := PushDstNodeOnline{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize:], &req); err != nil {
+			gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(req), err, string(msg[openP2PHeaderSize:]))
+			return err
+		}
+		gLog.i("%s online, retryApp", req.Node)
+		gConf.retryApp(req.Node)
+	case MsgPushSpecTunnel:
+		req := SpecTunnel{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize:], &req); err != nil {
+			gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(req), err, string(msg[openP2PHeaderSize:]))
+			return err
+		}
+		gLog.i("SpecTunnel %d", req.TunnelIndex)
+		gConf.Network.specTunnel = int(req.TunnelIndex)
+	case MsgPushSDWanRefresh:
+		GNetwork.write(MsgSDWAN, MsgSDWANInfoReq, nil)
+	case MsgPushNat4Detect:
+		handleNat4Detect(msg)
+	default:
+		i, ok := GNetwork.msgMap.Load(pushHead.From)
+		if !ok {
+			return ErrMsgChannelNotFound
+		}
+		ch := i.(chan msgCtx)
+		ch <- msgCtx{data: msg, ts: time.Now()}
+	}
+	return err
+}
+
+func handleNat4Detect(msg []byte) (err error) {
+	gLog.d("handleNat4Detect")
+	nd := Nat4Detect{}
+	if err = json.Unmarshal(msg[openP2PHeaderSize:], &nd); err != nil {
+		gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(nd), err, string(msg[openP2PHeaderSize:]))
+		return err
+	}
+	detectNatPort := func(protocol, server string, serverPort, localPort int) int {
+		natPort := 0
+		if protocol == "tcp" {
+			_, natPort, _, _ = natDetectTCP(server, serverPort, localPort)
+		} else {
+			_, natPort, _ = natDetectUDP(server, serverPort, localPort)
+		}
+		// gLog.i("%s %s %d %d %d", protocol, server, serverPort, localPort, natPort)
+		return natPort
+	}
+
+	result := ""
+	if nd.Num > 0 {
+		for i := 0; i < int(nd.Num); i++ {
+			natPort := detectNatPort(nd.Protocol, nd.Server, int(nd.ServerPort), int(nd.LocalPort)+i)
+			if i > 0 {
+				result += ","
+			}
+			result += fmt.Sprintf("%d", natPort)
+		}
+	} else {
+		for idx, item := range nd.CustomData {
+			natPort := detectNatPort(item.Protocol, item.Server, int(item.ServerPort), int(item.LocalPort))
+			if idx > 0 {
+				result += ","
+			}
+			result += fmt.Sprintf("%d", natPort)
+		}
+	}
+	return GNetwork.write(MsgReport, MsgPushReportLog, &result)
+}
+
+func handleEditApp(msg []byte) (err error) {
+	gLog.i("MsgPushEditApp")
+	newApp := AppInfo{}
+	if err = json.Unmarshal(msg[openP2PHeaderSize:], &newApp); err != nil {
+		gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(newApp), err, string(msg[openP2PHeaderSize:]))
+		return err
+	}
+	oldConf := AppConfig{Enabled: 1}
+	// protocol0+srcPort0 exist, delApp
+	oldConf.AppName = newApp.AppName
+	oldConf.Protocol = newApp.Protocol0
+	oldConf.Whitelist = newApp.Whitelist
+	oldConf.SrcPort = newApp.SrcPort0
+	oldConf.PeerNode = newApp.PeerNode
+	oldConf.DstHost = newApp.DstHost
+	oldConf.DstPort = newApp.DstPort
+	if newApp.Protocol0 != "" && newApp.SrcPort0 != 0 { // not edit
+		gConf.delete(oldConf)
+	}
+
+	if newApp.SrcPort != 0 { // delete app
+		// AddApp
+		newConf := oldConf
+		newConf.Protocol = newApp.Protocol
+		newConf.SrcPort = newApp.SrcPort
+		newConf.RelayNode = newApp.SpecRelayNode
+		newConf.PunchPriority = newApp.PunchPriority
+		gConf.add(newConf, false)
+	}
+
+	if newApp.Protocol0 != "" && newApp.SrcPort0 != 0 { // not edit
+		GNetwork.DeleteApp(oldConf) // DeleteApp may cost some times, execute at the end
+	}
+	return nil
+}
+
+func handleConnectReq(msg []byte) (err error) {
+	req := PushConnectReq{}
+	if err = json.Unmarshal(msg[openP2PHeaderSize+PushHeaderSize:], &req); err != nil {
+		gLog.e("Unmarshal %v:%s", reflect.TypeOf(req), err)
+		return err
+	}
+	gLog.d("%s is connecting... push connect response", req.From)
+	if compareVersion(req.Version, LeastSupportVersion) < 0 {
+		gLog.e("%s:%s", ErrVersionNotCompatible.Error(), req.From)
+		rsp := PushConnectRsp{
+			Error:  10,
+			Detail: ErrVersionNotCompatible.Error(),
+			To:     req.From,
+			From:   gConf.Network.Node,
+		}
+		GNetwork.push(req.From, MsgPushConnectRsp, rsp)
+		return ErrVersionNotCompatible
+	}
+	// verify totp token or token
+	t := totp.TOTP{Step: totp.RelayTOTPStep}
+	if t.Verify(req.Token, gConf.Network.Token, time.Now().Unix()-GNetwork.dt/int64(time.Second)) { // localTs may behind, auto adjust ts
+		gLog.d("handleConnectReq Access Granted")
+		config := AppConfig{}
+		config.peerNatType = req.NatType
+		config.peerConeNatPort = req.ConeNatPort
+		config.peerIP = req.FromIP
+		config.PeerNode = req.From
+		config.peerVersion = req.Version
+		config.fromToken = req.Token
+		config.peerIPv6 = req.IPv6
+		config.hasIPv4 = req.HasIPv4
+		config.hasUPNPorNATPMP = req.HasUPNPorNATPMP
+		config.linkMode = req.LinkMode
+		config.isUnderlayServer = req.IsUnderlayServer
+		config.UnderlayProtocol = req.UnderlayProtocol
+		// share relay node will limit bandwidth
+		if req.Token != gConf.Network.Token {
+			gLog.i("set share bandwidth %d mbps", gConf.Network.ShareBandwidth)
+			config.shareBandwidth = gConf.Network.ShareBandwidth
+		}
+		// go GNetwork.AddTunnel(config, req.ID)
+		go func() {
+			GNetwork.addDirectTunnel(config, req.ID, nil)
+		}()
+		return nil
+	}
+	gLog.e("handleConnectReq Access Denied:%s", req.From)
+	rsp := PushConnectRsp{
+		Error:  1,
+		Detail: fmt.Sprintf("connect to %s error: Access Denied", gConf.Network.Node),
+		To:     req.From,
+		From:   gConf.Network.Node,
+	}
+	return GNetwork.push(req.From, MsgPushConnectRsp, rsp)
+}
+
+func handleReportApps() (err error) {
+	gLog.i("MsgPushReportApps")
+	req := ReportApps{}
+	gConf.mtx.RLock()
+	defer gConf.mtx.RUnlock()
+
+	for _, config := range gConf.Apps {
+		appActive := 0
+		relayNode := ""
+		specRelayNode := ""
+		relayMode := ""
+		linkMode := LinkModeUDPPunch
+		var connectTime string
+		var retryTime string
+		app := GNetwork.findApp(config)
+		if app != nil {
+
+			if app.IsActive() {
+				appActive = 1
+			}
+			specRelayNode = app.config.RelayNode
+			t, tidx := app.AvailableTunnel()
+			if tidx != 0 { // TODO: should always report relay node for app edit
+				relayNode = app.relayNode[tidx]
+				relayMode = app.relayMode[tidx]
+			}
+
+			if t != nil {
+				linkMode = t.linkModeWeb
+			}
+			retryTime = app.RetryTime().Local().Format("2006-01-02T15:04:05-0700")
+			connectTime = app.ConnectTime().Local().Format("2006-01-02T15:04:05-0700")
+		}
+		appInfo := AppInfo{
+			AppName:       config.AppName,
+			Error:         config.errMsg,
+			Protocol:      config.Protocol,
+			PunchPriority: config.PunchPriority,
+			Whitelist:     config.Whitelist,
+			SrcPort:       config.SrcPort,
+			RelayNode:     relayNode,
+			SpecRelayNode: specRelayNode,
+			RelayMode:     relayMode,
+			LinkMode:      linkMode,
+			PeerNode:      config.PeerNode,
+			DstHost:       config.DstHost,
+			DstPort:       config.DstPort,
+			PeerUser:      config.PeerUser,
+			PeerIP:        config.peerIP,
+			PeerNatType:   config.peerNatType,
+			RetryTime:     retryTime,
+			ConnectTime:   connectTime,
+			IsActive:      appActive,
+			Enabled:       config.Enabled,
+		}
+		req.Apps = append(req.Apps, appInfo)
+	}
+	return GNetwork.write(MsgReport, MsgReportApps, &req)
+
+}
+
+func handleReportMemApps() (err error) {
+	gLog.i("handleReportMemApps")
+	req := ReportApps{}
+	GNetwork.sdwan.sysRoute.Range(func(key, value interface{}) bool {
+		node := value.(*sdwanNode)
+		appActive := 0
+		relayMode := ""
+		var connectTime string
+		var retryTime string
+
+		i, ok := GNetwork.apps.Load(node.id)
+		var app *p2pApp
+		var t *P2PTunnel
+		var tidx int
+		if ok {
+			app = i.(*p2pApp)
+			t, tidx = app.AvailableTunnel()
+			if app.IsActive() {
+				appActive = 1
+			}
+			if tidx != 0 {
+				relayMode = app.relayMode[tidx]
+			}
+			retryTime = app.RetryTime().Local().Format("2006-01-02T15:04:05-0700")
+			connectTime = app.ConnectTime().Local().Format("2006-01-02T15:04:05-0700")
+		}
+		appInfo := AppInfo{
+			RelayMode: relayMode,
+			PeerNode:  node.name,
+			IsActive:  appActive,
+			Enabled:   1,
+		}
+		if app != nil {
+			appInfo.AppName = app.config.AppName
+			appInfo.Error = app.config.errMsg
+			appInfo.Protocol = app.config.Protocol
+			appInfo.Whitelist = app.config.Whitelist
+			appInfo.SrcPort = app.config.SrcPort
+
+			if tidx != 0 {
+				appInfo.RelayNode = app.relayNode[tidx]
+			}
+
+			if t != nil {
+				appInfo.LinkMode = t.linkModeWeb
+			}
+			appInfo.DstHost = app.config.DstHost
+			appInfo.DstPort = app.config.DstPort
+			appInfo.PeerUser = app.config.PeerUser
+			appInfo.PeerIP = app.config.peerIP
+			appInfo.PeerNatType = app.config.peerNatType
+			appInfo.RetryTime = retryTime
+			appInfo.ConnectTime = connectTime
+		}
+		req.Apps = append(req.Apps, appInfo)
+		return true
+	})
+	req.TunError = GNetwork.sdwan.tunErr
+	gLog.d("handleReportMemApps res:%s", prettyJson(req))
+	gConf.retryAllMemApp()
+	return GNetwork.write(MsgReport, MsgReportMemApps, &req)
+}
+
+func handleLog(msg []byte) (err error) {
+	gLog.d("MsgPushReportLog")
+	const defaultLen = 1024 * 128
+	const maxLen = 1024 * 1024
+	req := ReportLogReq{}
+	if err = json.Unmarshal(msg[openP2PHeaderSize:], &req); err != nil {
+		gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(req), err, string(msg[openP2PHeaderSize:]))
+		return err
+	}
+	if req.FileName == "" {
+		req.FileName = "openp2p.log"
+	} else {
+		req.FileName = sanitizeFileName(req.FileName)
+	}
+	if req.IsSetLogLevel == 1 {
+		gLog.setLevel(LogLevel(req.LogLevel))
+	}
+	f, err := os.Open(filepath.Join("log", req.FileName))
+	if err != nil {
+		gLog.e("read log file error:%s", err)
+		return err
+	}
+	fi, err := f.Stat()
+	if err != nil {
+		return err
+	}
+	if req.Offset > fi.Size() {
+		req.Offset = fi.Size() - defaultLen
+	}
+	// verify input parameters
+	if req.Offset < 0 {
+		req.Offset = 0
+	}
+	if req.Len <= 0 || req.Len > maxLen {
+		req.Len = defaultLen
+	}
+
+	f.Seek(req.Offset, 0)
+	buff := make([]byte, req.Len)
+	readLength, err := f.Read(buff)
+	f.Close()
+	if err != nil {
+		gLog.e("read log content error:%s", err)
+		return err
+	}
+	rsp := ReportLogRsp{}
+	rsp.Content = string(buff[:readLength])
+	rsp.FileName = req.FileName
+	rsp.Total = fi.Size()
+	rsp.Len = req.Len
+	return GNetwork.write(MsgReport, MsgPushReportLog, &rsp)
+}
+
+func handleReportGoroutine() (err error) {
+	gLog.d("handleReportGoroutine")
+	buf := make([]byte, 1024*128)
+	stackLen := runtime.Stack(buf, true)
+	return GNetwork.write(MsgReport, MsgReportResponse, string(buf[:stackLen]))
+}
+
+func handleReportHeap() error {
+	var buf bytes.Buffer
+	err := pprof.Lookup("heap").WriteTo(&buf, 1)
+	if err != nil {
+		return err
+	}
+
+	return GNetwork.write(MsgReport, MsgReportResponse, buf.String())
+}
+
+func handleCheckRemoteService(msg []byte) (err error) {
+	gLog.d("handleCheckRemoteService")
+	req := CheckRemoteService{}
+	if err = json.Unmarshal(msg[openP2PHeaderSize:], &req); err != nil {
+		gLog.e("Unmarshal %v:%s  %s", reflect.TypeOf(req), err, string(msg[openP2PHeaderSize:]))
+		return err
+	}
+	rsp := PushRsp{Error: 0}
+	conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", req.Host, req.Port), time.Second*3)
+	if err != nil {
+		rsp.Error = 1
+		rsp.Detail = ErrRemoteServiceUnable.Error()
+	} else {
+		conn.Close()
+	}
+	return GNetwork.write(MsgReport, MsgReportResponse, rsp)
+}
--- a/core/holepunch.go
+++ b/core/holepunch.go
@@ -3,182 +3,250 @@ package openp2p
 import (
 	"bytes"
 	"encoding/binary"
+	"encoding/json"
 	"fmt"
 	"math/rand"
 	"net"
-	"sync"
 	"time"
 )

 func handshakeC2C(t *P2PTunnel) (err error) {
-	gLog.Printf(LvDEBUG, "handshakeC2C %s:%d:%d to %s:%d", t.pn.config.Node, t.coneLocalPort, t.coneNatPort, t.config.peerIP, t.config.peerConeNatPort)
-	defer gLog.Printf(LvDEBUG, "handshakeC2C end")
-	conn, err := net.ListenUDP("udp", t.la)
+	gLog.d("handshakeC2C %s:%d:%d to %s:%d", gConf.Network.Node, t.coneLocalPort, t.coneNatPort, t.config.peerIP, t.config.peerConeNatPort)
+	defer gLog.d("handshakeC2C end")
+	conn, err := net.ListenUDP("udp", t.localHoleAddr)
 	if err != nil {
 		return err
 	}
 	defer conn.Close()
-	_, err = UDPWrite(conn, t.ra, MsgP2P, MsgPunchHandshake, P2PHandshakeReq{ID: t.id})
+	_, err = UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshake, P2PHandshakeReq{ID: t.id})
 	if err != nil {
-		gLog.Println(LvDEBUG, "handshakeC2C write MsgPunchHandshake error:", err)
+		gLog.d("handshakeC2C write MsgPunchHandshake error:%s", err)
 		return err
 	}
-	ra, head, _, _, err := UDPRead(conn, 5000)
+	ra, head, buff, _, err := UDPRead(conn, HandshakeTimeout)
 	if err != nil {
-		time.Sleep(time.Millisecond * 200)
-		gLog.Println(LvDEBUG, err, ", return this error when ip was not reachable, retry read")
-		ra, head, _, _, err = UDPRead(conn, 5000)
+		gLog.d("handshakeC2C read MsgPunchHandshake error:%s", err)
+		return err
+	}
+	t.remoteHoleAddr, _ = net.ResolveUDPAddr("udp", ra.String())
+	var tunnelID uint64
+	if len(buff) > openP2PHeaderSize {
+		req := P2PHandshakeReq{}
+		if err := json.Unmarshal(buff[openP2PHeaderSize:openP2PHeaderSize+int(head.DataLen)], &req); err == nil {
+			tunnelID = req.ID
+		}
+	} else { // compatible with old version
+		tunnelID = t.id
+	}
+	if head.MainType == MsgP2P && head.SubType == MsgPunchHandshake && tunnelID == t.id {
+		gLog.d("read tunnelid:%d handshake ", t.id)
+		UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
+		_, head, _, _, err = UDPRead(conn, HandshakeTimeout)
 		if err != nil {
-			gLog.Println(LvDEBUG, "handshakeC2C read MsgPunchHandshake error:", err)
+			gLog.d("handshakeC2C write MsgPunchHandshakeAck error:", err)
 			return err
 		}
 	}
-	t.ra, _ = net.ResolveUDPAddr("udp", ra.String())
-	// cone server side
-	if head.MainType == MsgP2P && head.SubType == MsgPunchHandshake {
-		gLog.Printf(LvDEBUG, "read %d handshake ", t.id)
-		UDPWrite(conn, t.ra, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
-		_, head, _, _, err = UDPRead(conn, 5000)
+	if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck && tunnelID == t.id {
+		gLog.d("read tunnelID:%d handshake ack ", t.id)
+		_, err = UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
 		if err != nil {
-			gLog.Println(LvDEBUG, "handshakeC2C write MsgPunchHandshakeAck error", err)
-			return err
-		}
-		if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck {
-			gLog.Printf(LvDEBUG, "read %d handshake ack ", t.id)
-			gLog.Printf(LvINFO, "handshakeC2C ok")
-			return nil
-		}
-	}
-	// cone client side will only read handshake ack
-	if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck {
-		gLog.Printf(LvDEBUG, "read %d handshake ack ", t.id)
-		_, err = UDPWrite(conn, t.ra, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
-		if err != nil {
-			gLog.Println(LvDEBUG, "handshakeC2C write MsgPunchHandshakeAck error", err)
+			gLog.d("handshakeC2C write MsgPunchHandshakeAck error:%s", err)
 			return err
 		}
 	}
-	gLog.Printf(LvINFO, "handshakeC2C ok")
+	gLog.i("handshakeC2C ok")
 	return nil
 }

 func handshakeC2S(t *P2PTunnel) error {
-	gLog.Printf(LvDEBUG, "handshakeC2S start")
-	defer gLog.Printf(LvDEBUG, "handshakeC2S end")
-	// even if read timeout, continue handshake
-	t.pn.read(t.config.PeerNode, MsgPush, MsgPushHandshakeStart, SymmetricHandshakeAckTimeout)
+	gLog.d("tid:%d handshakeC2S start", t.id)
+	defer gLog.d("tid:%d handshakeC2S end", t.id)
+	if !buildTunnelMtx.TryLock() {
+		// time.Sleep(time.Second * 3)
+		return ErrBuildTunnelBusy
+	}
+	defer buildTunnelMtx.Unlock()
+	startTime := time.Now()
 	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	randPorts := r.Perm(65532)
-	conn, err := net.ListenUDP("udp", t.la)
+	conn, err := net.ListenUDP("udp", t.localHoleAddr)
 	if err != nil {
 		return err
 	}
 	defer conn.Close()
+
 	go func() error {
-		gLog.Printf(LvDEBUG, "send symmetric handshake to %s from %d:%d start", t.config.peerIP, t.coneLocalPort, t.coneNatPort)
+		gLog.d("tid:%d send symmetric handshake to %s from %d:%d start", t.id, t.config.peerIP, t.coneLocalPort, t.coneNatPort)
 		for i := 0; i < SymmetricHandshakeNum; i++ {
-			// TODO: auto calc cost time
-			time.Sleep(SymmetricHandshakeInterval)
+			// time.Sleep(SymmetricHandshakeInterval)
 			dst, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", t.config.peerIP, randPorts[i]+2))
 			if err != nil {
 				return err
 			}
 			_, err = UDPWrite(conn, dst, MsgP2P, MsgPunchHandshake, P2PHandshakeReq{ID: t.id})
 			if err != nil {
-				gLog.Println(LvDEBUG, "handshakeC2S write MsgPunchHandshake error:", err)
+				gLog.d("tid:%d handshakeC2S write MsgPunchHandshake error:%s", t.id, err)
 				return err
 			}
 		}
-		gLog.Println(LvDEBUG, "send symmetric handshake end")
+		gLog.d("tid:%d send symmetric handshake end", t.id)
 		return nil
 	}()
-	deadline := time.Now().Add(SymmetricHandshakeAckTimeout)
-	err = conn.SetReadDeadline(deadline)
+	err = conn.SetReadDeadline(time.Now().Add(HandshakeTimeout))
 	if err != nil {
-		gLog.Println(LvERROR, "SymmetricHandshakeAckTimeout SetReadDeadline error")
+		gLog.d("tid:%d SymmetricHandshakeAckTimeout SetReadDeadline error", t.id)
 		return err
 	}
 	// read response of the punching hole ok port
-	result := make([]byte, 1024)
-	_, dst, err := conn.ReadFrom(result)
+	buff := make([]byte, 1024)
+	_, dst, err := conn.ReadFrom(buff)
 	if err != nil {
-		gLog.Println(LvERROR, "handshakeC2S wait timeout")
+		gLog.d("tid:%d handshakeC2S wait timeout", t.id)
 		return err
 	}
 	head := &openP2PHeader{}
-	err = binary.Read(bytes.NewReader(result[:openP2PHeaderSize]), binary.LittleEndian, head)
+	err = binary.Read(bytes.NewReader(buff[:openP2PHeaderSize]), binary.LittleEndian, head)
 	if err != nil {
-		gLog.Println(LvERROR, "parse p2pheader error:", err)
+		gLog.e("tid:%d parse p2pheader error:%s", t.id, err)
 		return err
 	}
-	t.ra, _ = net.ResolveUDPAddr("udp", dst.String())
+	t.remoteHoleAddr, _ = net.ResolveUDPAddr("udp", dst.String())
+	var tunnelID uint64
+	if len(buff) > openP2PHeaderSize {
+		req := P2PHandshakeReq{}
+		if err := json.Unmarshal(buff[openP2PHeaderSize:openP2PHeaderSize+int(head.DataLen)], &req); err == nil {
+			tunnelID = req.ID
+		}
+	} else { // compatible with old version
+		tunnelID = t.id
+	}
+	if head.MainType == MsgP2P && head.SubType == MsgPunchHandshake && tunnelID == t.id {
+		gLog.d("tid:%d handshakeC2S read handshake ", t.id)
+		UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
+		for {
+			_, head, buff, _, err = UDPRead(conn, HandshakeTimeout)
+			if err != nil {
+				gLog.d("tid:%d handshakeC2S handshake error", t.id)
+				return err
+			}
+			var tunnelID uint64
+			if len(buff) > openP2PHeaderSize {
+				req := P2PHandshakeReq{}
+				if err := json.Unmarshal(buff[openP2PHeaderSize:openP2PHeaderSize+int(head.DataLen)], &req); err == nil {
+					tunnelID = req.ID
+				}
+			} else { // compatible with old version
+				tunnelID = t.id
+			}
+			// waiting ack
+			if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck && tunnelID == t.id {
+				break
+			}
+		}
+	}
 	if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck {
-		gLog.Printf(LvDEBUG, "handshakeC2S read %d handshake ack %s", t.id, dst.String())
-		_, err = UDPWrite(conn, dst, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
+		gLog.d("tid:%d handshakeC2S read handshake ack %s", t.id, t.remoteHoleAddr.String())
+		_, err = UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
 		return err
+	} else {
+		gLog.d("tid:%d handshakeS2C read msg but not MsgPunchHandshakeAck", t.id)
 	}
-	gLog.Printf(LvINFO, "handshakeC2S ok")
+	gLog.i("tid:%d handshakeC2S ok. cost %d ms", t.id, time.Since(startTime)/time.Millisecond)
 	return nil
 }

 func handshakeS2C(t *P2PTunnel) error {
-	gLog.Printf(LvDEBUG, "handshakeS2C start")
-	defer gLog.Printf(LvDEBUG, "handshakeS2C end")
-	gotCh := make(chan *net.UDPAddr, 5)
+	gLog.d("tid:%d handshakeS2C start", t.id)
+	defer gLog.d("tid:%d handshakeS2C end", t.id)
+	if !buildTunnelMtx.TryLock() {
+		// time.Sleep(time.Second * 3)
+		return ErrBuildTunnelBusy
+	}
+	defer buildTunnelMtx.Unlock()
+	startTime := time.Now()
+	gotCh := make(chan *net.UDPAddr, 50)
 	// sequencely udp send handshake, do not parallel send
-	gLog.Printf(LvDEBUG, "send symmetric handshake to %s:%d start", t.config.peerIP, t.config.peerConeNatPort)
+	gLog.d("tid:%d send symmetric handshake to %s:%d start", t.id, t.config.peerIP, t.config.peerConeNatPort)
 	gotIt := false
-	gotMtx := sync.Mutex{}
 	for i := 0; i < SymmetricHandshakeNum; i++ {
-		// TODO: auto calc cost time
-		time.Sleep(SymmetricHandshakeInterval)
+		// time.Sleep(SymmetricHandshakeInterval)
 		go func(t *P2PTunnel) error {
-			conn, err := net.ListenUDP("udp", nil)
+			conn, err := net.ListenUDP("udp", nil) // TODO: system allocated port really random?
 			if err != nil {
-				gLog.Printf(LvDEBUG, "listen error")
+				gLog.d("tid:%d listen error", t.id)
 				return err
 			}
 			defer conn.Close()
-			UDPWrite(conn, t.ra, MsgP2P, MsgPunchHandshake, P2PHandshakeReq{ID: t.id})
-			_, head, _, _, err := UDPRead(conn, 10000)
+			UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshake, P2PHandshakeReq{ID: t.id})
+			_, head, buff, _, err := UDPRead(conn, HandshakeTimeout)
 			if err != nil {
 				// gLog.Println(LevelDEBUG, "one of the handshake error:", err)
 				return err
 			}
-			gotMtx.Lock()
-			defer gotMtx.Unlock()
 			if gotIt {
 				return nil
 			}
-			gotIt = true
-			t.la, _ = net.ResolveUDPAddr("udp", conn.LocalAddr().String())
-			if head.MainType == MsgP2P && head.SubType == MsgPunchHandshake {
-				gLog.Printf(LvDEBUG, "handshakeS2C read %d handshake ", t.id)
-				UDPWrite(conn, t.ra, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
-				_, head, _, _, err = UDPRead(conn, 5000)
-				if err != nil {
-					gLog.Println(LvDEBUG, "handshakeS2C handshake error")
-					return err
+			var tunnelID uint64
+			if len(buff) >= openP2PHeaderSize+8 {
+				req := P2PHandshakeReq{}
+				if err := json.Unmarshal(buff[openP2PHeaderSize:openP2PHeaderSize+int(head.DataLen)], &req); err == nil {
+					tunnelID = req.ID
 				}
-				if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck {
-					gLog.Printf(LvDEBUG, "handshakeS2C read %d handshake ack %s", t.id, conn.LocalAddr().String())
-					gotCh <- t.la
-					return nil
+			} else { // compatible with old version
+				tunnelID = t.id
+			}
+
+			if head.MainType == MsgP2P && head.SubType == MsgPunchHandshake && tunnelID == t.id {
+				gLog.d("tid:%d handshakeS2C read handshake ", t.id)
+				UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
+				// may read several MsgPunchHandshake
+				for {
+					_, head, buff, _, err = UDPRead(conn, HandshakeTimeout)
+					if err != nil {
+						gLog.d("tid:%d handshakeS2C handshake error", t.id)
+						return err
+					}
+					if len(buff) > openP2PHeaderSize {
+						req := P2PHandshakeReq{}
+						if err := json.Unmarshal(buff[openP2PHeaderSize:openP2PHeaderSize+int(head.DataLen)], &req); err == nil {
+							tunnelID = req.ID
+						}
+					} else { // compatible with old version
+						tunnelID = t.id
+					}
+					if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck && tunnelID == t.id {
+						break
+					} else {
+						gLog.d("tid:%d handshakeS2C read msg but not MsgPunchHandshakeAck", t.id)
+					}
 				}
 			}
+			if head.MainType == MsgP2P && head.SubType == MsgPunchHandshakeAck {
+				gLog.d("tid:%d handshakeS2C read handshake ack %s", t.id, conn.LocalAddr().String())
+				UDPWrite(conn, t.remoteHoleAddr, MsgP2P, MsgPunchHandshakeAck, P2PHandshakeReq{ID: t.id})
+				gotIt = true
+				la, _ := net.ResolveUDPAddr("udp", conn.LocalAddr().String())
+				gotCh <- la
+				return nil
+			} else {
+				gLog.d("tid:%d handshakeS2C read msg but not MsgPunchHandshakeAck", t.id)
+			}
 			return nil
 		}(t)
 	}
-	gLog.Printf(LvDEBUG, "send symmetric handshake end")
-	gLog.Println(LvDEBUG, "handshakeS2C ready, notify peer connect")
-	t.pn.push(t.config.PeerNode, MsgPushHandshakeStart, TunnelMsg{ID: t.id})
+	gLog.d("tid:%d send symmetric handshake end", t.id)
+	if compareVersion(t.config.peerVersion, SymmetricSimultaneouslySendVersion) < 0 { // compatible with old client
+		gLog.d("tid:%d handshakeS2C ready, notify peer connect", t.id)
+		GNetwork.push(t.config.PeerNode, MsgPushHandshakeStart, TunnelMsg{ID: t.id})
+	}

 	select {
-	case <-time.After(SymmetricHandshakeAckTimeout):
-		return fmt.Errorf("wait handshake failed")
+	case <-time.After(HandshakeTimeout):
+		return fmt.Errorf("tid:%d wait handshake timeout", t.id)
 	case la := <-gotCh:
-		gLog.Println(LvDEBUG, "symmetric handshake ok", la)
-		gLog.Printf(LvINFO, "handshakeS2C ok")
+		t.localHoleAddr = la
+		gLog.i("tid:%d handshakeS2C ok. cost %dms", t.id, time.Since(startTime)/time.Millisecond)
 	}
 	return nil
 }
--- a/core/install.go
+++ b/core/install.go
@@ -1,129 +1,123 @@
-package openp2p
-
-import (
-	"fmt"
-	"io"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-	"time"
-)
-
-// examples:
-// listen:
-// ./openp2p install -node hhd1207-222 -token YOUR-TOKEN -sharebandwidth 0
-// listen and build p2papp:
-// ./openp2p install -node hhd1207-222 -token YOUR-TOKEN -sharebandwidth 0 -peernode hhdhome-n1 -dstip 127.0.0.1 -dstport 50022 -protocol tcp -srcport 22
-func install() {
-	gLog.Println(LvINFO, "openp2p start. version: ", OpenP2PVersion)
-	gLog.Println(LvINFO, "Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
-	gLog.Println(LvINFO, "install start")
-	defer gLog.Println(LvINFO, "install end")
-	// auto uninstall
-	err := os.MkdirAll(defaultInstallPath, 0775)
-
-	if err != nil {
-		gLog.Printf(LvERROR, "MkdirAll %s error:%s", defaultInstallPath, err)
-		return
-	}
-	err = os.Chdir(defaultInstallPath)
-	if err != nil {
-		gLog.Println(LvERROR, "cd error:", err)
-		return
-	}
-
-	uninstall()
-	// save config file
-	parseParams("install")
-	targetPath := filepath.Join(defaultInstallPath, defaultBinName)
-	d := daemon{}
-	// copy files
-
-	binPath, _ := os.Executable()
-	src, errFiles := os.Open(binPath) // can not use args[0], on Windows call openp2p is ok(=openp2p.exe)
-	if errFiles != nil {
-		gLog.Printf(LvERROR, "os.OpenFile %s error:%s", os.Args[0], errFiles)
-		return
-	}
-
-	dst, errFiles := os.OpenFile(targetPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0775)
-	if errFiles != nil {
-		gLog.Printf(LvERROR, "os.OpenFile %s error:%s", targetPath, errFiles)
-		return
-	}
-
-	_, errFiles = io.Copy(dst, src)
-	if errFiles != nil {
-		gLog.Printf(LvERROR, "io.Copy error:%s", errFiles)
-		return
-	}
-	src.Close()
-	dst.Close()
-
-	// install system service
-	gLog.Println(LvINFO, "targetPath:", targetPath)
-	err = d.Control("install", targetPath, []string{"-d"})
-	if err == nil {
-		gLog.Println(LvINFO, "install system service ok.")
-	}
-	time.Sleep(time.Second * 2)
-	err = d.Control("start", targetPath, []string{"-d"})
-	if err != nil {
-		gLog.Println(LvERROR, "start openp2p service error:", err)
-	} else {
-		gLog.Println(LvINFO, "start openp2p service ok.")
-	}
-	gLog.Println(LvINFO, "Visit WebUI on https://console.openp2p.cn")
-}
-
-func installByFilename() {
-	params := strings.Split(filepath.Base(os.Args[0]), "-")
-	if len(params) < 4 {
-		return
-	}
-	serverHost := params[1]
-	token := params[2]
-	gLog.Println(LvINFO, "install start")
-	targetPath := os.Args[0]
-	args := []string{"install"}
-	args = append(args, "-serverhost")
-	args = append(args, serverHost)
-	args = append(args, "-token")
-	args = append(args, token)
-	env := os.Environ()
-	cmd := exec.Command(targetPath, args...)
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	cmd.Stdin = os.Stdin
-	cmd.Env = env
-	err := cmd.Run()
-	if err != nil {
-		gLog.Println(LvERROR, "install by filename, start process error:", err)
-		return
-	}
-	gLog.Println(LvINFO, "install end")
-	gLog.Println(LvINFO, "Visit WebUI on https://console.openp2p.cn")
-	fmt.Println("Press the Any Key to exit")
-	fmt.Scanln()
-	os.Exit(0)
-}
-func uninstall() {
-	gLog.Println(LvINFO, "uninstall start")
-	defer gLog.Println(LvINFO, "uninstall end")
-	d := daemon{}
-	err := d.Control("stop", "", nil)
-	if err != nil { // service maybe not install
-		return
-	}
-	err = d.Control("uninstall", "", nil)
-	if err != nil {
-		gLog.Println(LvERROR, "uninstall system service error:", err)
-	} else {
-		gLog.Println(LvINFO, "uninstall system service ok.")
-	}
-	binPath := filepath.Join(defaultInstallPath, defaultBinName)
-	os.Remove(binPath + "0")
-	os.Remove(binPath)
-	// os.RemoveAll(defaultInstallPath)  // reserve config.json
-}
+package openp2p
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+func install() {
+	gLog.i("openp2p start. version: %s", OpenP2PVersion)
+	gLog.i("Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
+	gLog.i("install start")
+	defer gLog.i("install end")
+	parseParams("install", "")
+	// auto uninstall
+	uninstall(false)
+	gLog.i("install path: %s", defaultInstallPath)
+	targetPath := filepath.Join(defaultInstallPath, defaultBinName)
+	d := daemon{}
+	// copy files
+
+	binPath, _ := os.Executable()
+	src, errFiles := os.Open(binPath) // can not use args[0], on Windows call openp2p is ok(=openp2p.exe)
+	if errFiles != nil {
+		gLog.e("os.Open %s error:%s", os.Args[0], errFiles)
+		return
+	}
+
+	dst, errFiles := os.OpenFile(targetPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0775)
+	if errFiles != nil {
+		time.Sleep(time.Second * 5) // maybe windows defender occupied the file, retry
+		dst, errFiles = os.OpenFile(targetPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0775)
+		if errFiles != nil {
+			gLog.e("os.OpenFile %s error:%s", targetPath, errFiles)
+			return
+		}
+	}
+
+	_, errFiles = io.Copy(dst, src)
+	if errFiles != nil {
+		gLog.e("io.Copy error:%s", errFiles)
+		return
+	}
+	src.Close()
+	dst.Close()
+
+	// install system service
+	err := d.Control("install", targetPath, []string{"-d"})
+	if err == nil {
+		gLog.i("install system service ok.")
+	}
+	time.Sleep(time.Second * 2)
+	err = d.Control("start", targetPath, []string{"-d"})
+	if err != nil {
+		gLog.e("start openp2p service error:%s", err)
+	} else {
+		gLog.i("start openp2p service ok.")
+	}
+	gConf.save()
+	gLog.i("Visit WebUI on https://console.openp2p.cn")
+}
+
+func installByFilename() {
+	params := strings.Split(filepath.Base(os.Args[0]), "-")
+	if len(params) < 4 {
+		return
+	}
+	serverHost := params[1]
+	token := params[2]
+	gLog.i("install start")
+	targetPath := os.Args[0]
+	args := []string{"install"}
+	args = append(args, "-serverhost")
+	args = append(args, serverHost)
+	args = append(args, "-token")
+	args = append(args, token)
+	env := os.Environ()
+	cmd := exec.Command(targetPath, args...)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Stdin = os.Stdin
+	cmd.Env = env
+	err := cmd.Run()
+	if err != nil {
+		gLog.e("install by filename, start process error:%s", err)
+		return
+	}
+	gLog.i("install end")
+	gLog.i("Visit WebUI on https://console.openp2p.cn")
+	fmt.Println("Press the Any Key to exit")
+	fmt.Scanln()
+	os.Exit(0)
+}
+
+func uninstall(rmFiles bool) {
+	gLog.i("uninstall start")
+	defer gLog.i("uninstall end")
+	d := daemon{}
+	err := d.Control("stop", "", nil)
+	if err != nil { // service maybe not install
+		gLog.d("stop service error:%s", err)
+	}
+	err = d.Control("uninstall", "", nil)
+	if err != nil {
+		gLog.d("uninstall system service error:%s", err)
+	} else {
+		gLog.i("uninstall system service ok.")
+	}
+	time.Sleep(time.Second * 3)
+	binPath := filepath.Join(defaultInstallPath, defaultBinName)
+	os.Remove(binPath + "0")
+	os.Remove(binPath)
+	if rmFiles {
+		if err := os.RemoveAll(defaultInstallPath); err != nil {
+			gLog.e("RemoveAll %s error:%s", defaultInstallPath, err)
+		}
+	}
+
+}
--- a/core/iptables.go
+++ b/core/iptables.go
@@ -0,0 +1,74 @@
+package openp2p
+
+import (
+	"log"
+	"os/exec"
+	"runtime"
+)
+
+func allowTunForward() {
+	if runtime.GOOS != "linux" { // only support Linux
+		return
+	}
+	exec.Command("sh", "-c", `iptables -t filter -D FORWARD -i optun -j ACCEPT`).Run()
+	exec.Command("sh", "-c", `iptables -t filter -D FORWARD -o optun -j ACCEPT`).Run()
+	err := exec.Command("sh", "-c", `iptables -t filter -I FORWARD -i optun -j ACCEPT`).Run()
+	if err != nil {
+		log.Println("allow foward in error:", err)
+	}
+	err = exec.Command("sh", "-c", `iptables -t filter -I FORWARD -o optun -j ACCEPT`).Run()
+	if err != nil {
+		log.Println("allow foward out error:", err)
+	}
+}
+
+func clearSNATRule() {
+	if runtime.GOOS != "linux" {
+		return
+	}
+	execCommand("iptables", true, "-t", "nat", "-D", "POSTROUTING", "-j", "OPSDWAN")
+	execCommand("iptables", true, "-t", "nat", "-F", "OPSDWAN")
+	execCommand("iptables", true, "-t", "nat", "-X", "OPSDWAN")
+}
+
+func initSNATRule(localNet string) {
+	if runtime.GOOS != "linux" {
+		return
+	}
+	clearSNATRule()
+
+	err := execCommand("iptables", true, "-t", "nat", "-N", "OPSDWAN")
+	if err != nil {
+		log.Println("iptables new sdwan chain error:", err)
+		return
+	}
+	err = execCommand("iptables", true, "-t", "nat", "-A", "POSTROUTING", "-j", "OPSDWAN")
+	if err != nil {
+		log.Println("iptables append postrouting error:", err)
+		return
+	}
+	err = execCommand("iptables", true, "-t", "nat", "-A", "OPSDWAN",
+		"-o", "optun", "!", "-s", localNet, "-j", "MASQUERADE")
+	if err != nil {
+		log.Println("add optun snat error:", err)
+		return
+	}
+	err = execCommand("iptables", true, "-t", "nat", "-A", "OPSDWAN", "!", "-o", "optun",
+		"-s", localNet, "-j", "MASQUERADE")
+	if err != nil {
+		log.Println("add optun snat error:", err)
+		return
+	}
+}
+
+func addSNATRule(target string) {
+	if runtime.GOOS != "linux" {
+		return
+	}
+	err := execCommand("iptables", true, "-t", "nat", "-A", "OPSDWAN", "!", "-o", "optun",
+		"-s", target, "-j", "MASQUERADE")
+	if err != nil {
+		log.Println("iptables add optun snat error:", err)
+		return
+	}
+}
--- a/core/iptree.go
+++ b/core/iptree.go
@@ -0,0 +1,179 @@
+package openp2p
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"log"
+	"net"
+	"strings"
+	"sync"
+
+	"github.com/emirpasic/gods/trees/avltree"
+	"github.com/emirpasic/gods/utils"
+)
+
+type IPTree struct {
+	tree    *avltree.Tree
+	treeMtx sync.RWMutex
+}
+type IPTreeValue struct {
+	maxIP uint32
+	v     interface{}
+}
+
+// TODO: deal interset
+func (iptree *IPTree) DelIntIP(minIP uint32, maxIP uint32) {
+	iptree.tree.Remove(minIP)
+}
+
+// add 120k cost 0.5s
+func (iptree *IPTree) AddIntIP(minIP uint32, maxIP uint32, v interface{}) bool {
+	if minIP > maxIP {
+		return false
+	}
+	iptree.treeMtx.Lock()
+	defer iptree.treeMtx.Unlock()
+	newMinIP := minIP
+	newMaxIP := maxIP
+	cur := iptree.tree.Root
+	for {
+		if cur == nil {
+			break
+		}
+		tv := cur.Value.(*IPTreeValue)
+		curMinIP := cur.Key.(uint32)
+
+		// newNode all in existNode, treat as inserted.
+		if newMinIP >= curMinIP && newMaxIP <= tv.maxIP {
+			return true
+		}
+		// has no interset
+		if newMinIP > tv.maxIP {
+			cur = cur.Children[1]
+			continue
+		}
+		if newMaxIP < curMinIP {
+			cur = cur.Children[0]
+			continue
+		}
+		// has interset, rm it and Add the new merged ip segment
+		iptree.tree.Remove(curMinIP)
+		if curMinIP < newMinIP {
+			newMinIP = curMinIP
+		}
+		if tv.maxIP > newMaxIP {
+			newMaxIP = tv.maxIP
+		}
+		cur = iptree.tree.Root
+	}
+	//  put in the tree
+	iptree.tree.Put(newMinIP, &IPTreeValue{newMaxIP, v})
+	return true
+}
+
+func (iptree *IPTree) Add(minIPStr string, maxIPStr string, v interface{}) bool {
+	var minIP, maxIP uint32
+	binary.Read(bytes.NewBuffer(net.ParseIP(minIPStr).To4()), binary.BigEndian, &minIP)
+	binary.Read(bytes.NewBuffer(net.ParseIP(maxIPStr).To4()), binary.BigEndian, &maxIP)
+	return iptree.AddIntIP(minIP, maxIP, v)
+}
+
+func (iptree *IPTree) Del(minIPStr string, maxIPStr string) {
+	var minIP, maxIP uint32
+	binary.Read(bytes.NewBuffer(net.ParseIP(minIPStr).To4()), binary.BigEndian, &minIP)
+	binary.Read(bytes.NewBuffer(net.ParseIP(maxIPStr).To4()), binary.BigEndian, &maxIP)
+	iptree.DelIntIP(minIP, maxIP)
+}
+
+func (iptree *IPTree) Contains(ipStr string) bool {
+	var ip uint32
+	binary.Read(bytes.NewBuffer(net.ParseIP(ipStr).To4()), binary.BigEndian, &ip)
+	_, ok := iptree.Load(ip)
+	return ok
+}
+
+func IsLocalhost(ipStr string) bool {
+	if ipStr == "localhost" || ipStr == "127.0.0.1" || ipStr == "::1" {
+		return true
+	}
+	return false
+}
+
+func (iptree *IPTree) Load(ip uint32) (interface{}, bool) {
+	iptree.treeMtx.RLock()
+	defer iptree.treeMtx.RUnlock()
+	if iptree.tree == nil {
+		return nil, false
+	}
+	n := iptree.tree.Root
+	for n != nil {
+		tv := n.Value.(*IPTreeValue)
+		curMinIP := n.Key.(uint32)
+		switch {
+		case ip >= curMinIP && ip <= tv.maxIP: // hit
+			return tv.v, true
+		case ip < curMinIP:
+			n = n.Children[0]
+		default:
+			n = n.Children[1]
+		}
+	}
+	return nil, false
+}
+
+func (iptree *IPTree) Size() int {
+	iptree.treeMtx.RLock()
+	defer iptree.treeMtx.RUnlock()
+	return iptree.tree.Size()
+}
+
+func (iptree *IPTree) Print() {
+	iptree.treeMtx.RLock()
+	defer iptree.treeMtx.RUnlock()
+	log.Println("size:", iptree.Size())
+	log.Println(iptree.tree.String())
+}
+
+func (iptree *IPTree) Clear() {
+	iptree.treeMtx.Lock()
+	defer iptree.treeMtx.Unlock()
+	iptree.tree.Clear()
+}
+
+// input format 127.0.0.1,192.168.1.0/24,10.1.1.30-10.1.1.50
+// 127.0.0.1
+// 192.168.1.0/24
+// 192.168.1.1-192.168.1.10
+func NewIPTree(ips string) *IPTree {
+	iptree := &IPTree{
+		tree: avltree.NewWith(utils.UInt32Comparator),
+	}
+	ipArr := strings.Split(ips, ",")
+	for _, ip := range ipArr {
+		if strings.Contains(ip, "/") { // x.x.x.x/24
+			_, ipNet, err := net.ParseCIDR(ip)
+			if err != nil {
+				fmt.Println("Error parsing CIDR:", err)
+				continue
+			}
+			minIP := ipNet.IP.Mask(ipNet.Mask).String()
+			maxIP := calculateMaxIP(ipNet).String()
+			iptree.Add(minIP, maxIP, nil)
+		} else if strings.Contains(ip, "-") { // x.x.x.x-y.y.y.y
+			minAndMax := strings.Split(ip, "-")
+			iptree.Add(minAndMax[0], minAndMax[1], nil)
+		} else { // single ip
+			iptree.Add(ip, ip, nil)
+		}
+	}
+	return iptree
+}
+func calculateMaxIP(ipNet *net.IPNet) net.IP {
+	maxIP := make(net.IP, len(ipNet.IP))
+	copy(maxIP, ipNet.IP)
+	for i := range maxIP {
+		maxIP[i] |= ^ipNet.Mask[i]
+	}
+	return maxIP
+}
--- a/core/iptree_test.go
+++ b/core/iptree_test.go
@@ -0,0 +1,174 @@
+package openp2p
+
+import (
+	"bytes"
+	"encoding/binary"
+	"net"
+	"testing"
+	"time"
+)
+
+func wrapTestContains(t *testing.T, iptree *IPTree, ip string, result bool) {
+	if iptree.Contains(ip) == result {
+		// t.Logf("compare version %s %s ok\n", v1, v2)
+	} else {
+		t.Errorf("test %s fail\n", ip)
+	}
+}
+func wrapBenchmarkContains(t *testing.B, iptree *IPTree, ip string, result bool) {
+	if iptree.Contains(ip) == result {
+		// t.Logf("compare version %s %s ok\n", v1, v2)
+	} else {
+		t.Errorf("test %s fail\n", ip)
+	}
+}
+
+func TestAllInputFormat(t *testing.T) {
+	iptree := NewIPTree("219.137.185.70,127.0.0.1,127.0.0.0/8,192.168.1.0/24,192.168.3.100-192.168.3.255,192.168.100.0-192.168.200.255")
+	wrapTestContains(t, iptree, "127.0.0.1", true)
+	wrapTestContains(t, iptree, "127.0.0.2", true)
+	wrapTestContains(t, iptree, "127.1.1.1", true)
+	wrapTestContains(t, iptree, "219.137.185.70", true)
+	wrapTestContains(t, iptree, "219.137.185.71", false)
+	wrapTestContains(t, iptree, "192.168.1.2", true)
+	wrapTestContains(t, iptree, "192.168.2.2", false)
+	wrapTestContains(t, iptree, "192.168.3.1", false)
+	wrapTestContains(t, iptree, "192.168.3.100", true)
+	wrapTestContains(t, iptree, "192.168.3.255", true)
+	wrapTestContains(t, iptree, "192.168.150.1", true)
+	wrapTestContains(t, iptree, "192.168.250.1", false)
+}
+
+func TestSingleIP(t *testing.T) {
+	iptree := NewIPTree("")
+	iptree.Add("219.137.185.70", "219.137.185.70", nil)
+	wrapTestContains(t, iptree, "219.137.185.70", true)
+	wrapTestContains(t, iptree, "219.137.185.71", false)
+}
+
+func TestWrongSegment(t *testing.T) {
+	iptree := NewIPTree("")
+	inserted := iptree.Add("87.251.75.0", "82.251.75.255", nil)
+	if inserted {
+		t.Errorf("TestWrongSegment failed\n")
+	}
+}
+
+func TestSegment2(t *testing.T) {
+	iptree := NewIPTree("")
+	iptree.Clear()
+	iptree.Add("10.1.5.50", "10.1.5.100", nil)
+	iptree.Add("10.1.1.50", "10.1.1.100", nil)
+	iptree.Add("10.1.2.50", "10.1.2.100", nil)
+	iptree.Add("10.1.6.50", "10.1.6.100", nil)
+	iptree.Add("10.1.7.50", "10.1.7.100", nil)
+	iptree.Add("10.1.3.50", "10.1.3.100", nil)
+	iptree.Add("10.1.1.1", "10.1.1.10", nil)    // no interset
+	iptree.Add("10.1.1.200", "10.1.1.250", nil) // no interset
+	iptree.Print()
+
+	iptree.Add("10.1.1.80", "10.1.1.90", nil) // all in
+	iptree.Add("10.1.1.40", "10.1.1.60", nil) // interset
+	iptree.Print()
+	iptree.Add("10.1.1.90", "10.1.1.110", nil) // interset
+	iptree.Print()
+	t.Logf("ipTree size:%d\n", iptree.Size())
+	wrapTestContains(t, iptree, "10.1.1.40", true)
+	wrapTestContains(t, iptree, "10.1.5.50", true)
+	wrapTestContains(t, iptree, "10.1.6.50", true)
+	wrapTestContains(t, iptree, "10.1.7.50", true)
+	wrapTestContains(t, iptree, "10.1.2.50", true)
+	wrapTestContains(t, iptree, "10.1.3.50", true)
+	wrapTestContains(t, iptree, "10.1.1.60", true)
+	wrapTestContains(t, iptree, "10.1.1.90", true)
+	wrapTestContains(t, iptree, "10.1.1.110", true)
+	wrapTestContains(t, iptree, "10.1.1.250", true)
+	wrapTestContains(t, iptree, "10.1.2.60", true)
+	wrapTestContains(t, iptree, "10.1.100.30", false)
+	wrapTestContains(t, iptree, "10.1.200.30", false)
+
+	iptree.Add("10.0.0.0", "10.255.255.255", nil) // will merge all segment
+	iptree.Print()
+	if iptree.Size() != 1 {
+		t.Errorf("merge ip segment error\n")
+	}
+
+}
+
+func BenchmarkBuildipTree20k(t *testing.B) {
+	iptree := NewIPTree("")
+	iptree.Clear()
+	iptree.Add("10.1.5.50", "10.1.5.100", nil)
+	iptree.Add("10.1.1.50", "10.1.1.100", nil)
+	iptree.Add("10.1.2.50", "10.1.2.100", nil)
+	iptree.Add("10.1.6.50", "10.1.6.100", nil)
+	iptree.Add("10.1.7.50", "10.1.7.100", nil)
+	iptree.Add("10.1.3.50", "10.1.3.100", nil)
+	iptree.Add("10.1.1.1", "10.1.1.10", nil)    // no interset
+	iptree.Add("10.1.1.200", "10.1.1.250", nil) // no interset
+	iptree.Add("10.1.1.80", "10.1.1.90", nil)   // all in
+	iptree.Add("10.1.1.40", "10.1.1.60", nil)   // interset
+	iptree.Add("10.1.1.90", "10.1.1.110", nil)  // interset
+	var minIP uint32
+	binary.Read(bytes.NewBuffer(net.ParseIP("10.1.1.1").To4()), binary.BigEndian, &minIP)
+
+	// insert 10k block ip single
+	nodeNum := uint32(10000 * 1)
+	gap := uint32(10)
+	for i := minIP; i < minIP+nodeNum*gap; i += gap {
+		iptree.AddIntIP(i, i, nil)
+		// t.Logf("ipTree size:%d\n", iptree.Size())
+	}
+	binary.Read(bytes.NewBuffer(net.ParseIP("100.1.1.1").To4()), binary.BigEndian, &minIP)
+	// insert 100k block ip segment
+	for i := minIP; i < minIP+nodeNum*gap; i += gap {
+		iptree.AddIntIP(i, i+5, nil)
+	}
+	t.Logf("ipTree size:%d\n", iptree.Size())
+	iptree.Clear()
+	t.Logf("clear. ipTree size:%d\n", iptree.Size())
+}
+func BenchmarkQuery(t *testing.B) {
+	ts := time.Now()
+	iptree := NewIPTree("")
+	iptree.Clear()
+	iptree.Add("10.1.5.50", "10.1.5.100", nil)
+	iptree.Add("10.1.1.50", "10.1.1.100", nil)
+	iptree.Add("10.1.2.50", "10.1.2.100", nil)
+	iptree.Add("10.1.6.50", "10.1.6.100", nil)
+	iptree.Add("10.1.7.50", "10.1.7.100", nil)
+	iptree.Add("10.1.3.50", "10.1.3.100", nil)
+	iptree.Add("10.1.1.1", "10.1.1.10", nil)    // no interset
+	iptree.Add("10.1.1.200", "10.1.1.250", nil) // no interset
+	iptree.Add("10.1.1.80", "10.1.1.90", nil)   // all in
+	iptree.Add("10.1.1.40", "10.1.1.60", nil)   // interset
+	iptree.Add("10.1.1.90", "10.1.1.110", nil)  // interset
+	var minIP uint32
+	binary.Read(bytes.NewBuffer(net.ParseIP("10.1.1.1").To4()), binary.BigEndian, &minIP)
+
+	// insert 10k block ip single
+	nodeNum := uint32(10000 * 1000)
+	gap := uint32(10)
+	for i := minIP; i < minIP+nodeNum*gap; i += gap {
+		iptree.AddIntIP(i, i, nil)
+		// t.Logf("ipTree size:%d\n", iptree.Size())
+	}
+	binary.Read(bytes.NewBuffer(net.ParseIP("100.1.1.1").To4()), binary.BigEndian, &minIP)
+	// insert 100k block ip segment
+	for i := minIP; i < minIP+nodeNum*gap; i += gap {
+		iptree.AddIntIP(i, i+5, nil)
+	}
+	t.Logf("ipTree size:%d cost:%dms\n", iptree.Size(), time.Since(ts)/time.Millisecond)
+	ts = time.Now()
+	// t.ResetTimer()
+	queryNum := 100 * 10000
+	for i := 0; i < queryNum; i++ {
+		iptree.Load(minIP + uint32(i))
+		wrapBenchmarkContains(t, iptree, "10.1.5.55", true)
+		wrapBenchmarkContains(t, iptree, "10.1.1.1", true)
+		wrapBenchmarkContains(t, iptree, "10.1.5.200", false)
+		wrapBenchmarkContains(t, iptree, "200.1.1.1", false)
+	}
+	t.Logf("query num:%d cost:%dms\n", queryNum*4, time.Since(ts)/time.Millisecond)
+
+}
--- a/core/log.go
+++ b/core/log.go
@@ -3,162 +3,197 @@ package openp2p
 import (
 	"log"
 	"os"
+	"path/filepath"
 	"runtime"
 	"sync"
+	"sync/atomic"
 	"time"
 )

-type LogLevel int
+type LogLevel int32

 var gLog *logger

 const (
-	LvDEBUG LogLevel = iota
-	LvINFO
-	LvWARN
-	LvERROR
+	LvDev   LogLevel = -1
+	LvDEBUG LogLevel = 0
+	LvINFO  LogLevel = 1
+	LvWARN  LogLevel = 2
+	LvERROR LogLevel = 3
 )

-var (
-	logFileNames map[LogLevel]string
-	loglevel     map[LogLevel]string
-)
-
-func init() {
-	logFileNames = make(map[LogLevel]string)
-	loglevel = make(map[LogLevel]string)
-	logFileNames[0] = ".log"
-	loglevel[LvDEBUG] = "DEBUG"
-	loglevel[LvINFO] = "INFO"
-	loglevel[LvWARN] = "WARN"
-	loglevel[LvERROR] = "ERROR"
+const logFileNames string = ".log"

+var loglevel = map[LogLevel]string{
+	LvDEBUG: "DEBUG",
+	LvINFO:  "INFO",
+	LvWARN:  "WARN",
+	LvERROR: "ERROR",
+	LvDev:   "Dev",
 }

 const (
-	LogFile = iota
-	LogConsole
-	LogFileAndConsole
+	LogFile    = 1
+	LogConsole = 1 << 1
 )

 type logger struct {
-	loggers    map[LogLevel]*log.Logger
-	files      map[LogLevel]*os.File
-	level      LogLevel
-	logDir     string
-	mtx        *sync.Mutex
-	lineEnding string
-	pid        int
-	maxLogSize int64
-	mode       int
+	logger           *log.Logger
+	files            *os.File
+	level            atomic.Int32
+	logDir           string
+	mtx              sync.Mutex
+	lineEnding       string
+	pid              int
+	maxLogSize       atomic.Int64
+	mode             int
+	stdLogger        *log.Logger
+	checkFileRunning bool
 }

 func NewLogger(path string, filePrefix string, level LogLevel, maxLogSize int64, mode int) *logger {
-	loggers := make(map[LogLevel]*log.Logger)
-	logfiles := make(map[LogLevel]*os.File)
-	var (
-		logdir string
-	)
-	if path == "" {
-		logdir = "log/"
-	} else {
-		logdir = path + "/log/"
+	logdir := filepath.Join(path, "log")
+	if err := os.MkdirAll(logdir, 0755); err != nil && mode&LogFile != 0 {
+		return nil
 	}
-	os.MkdirAll(logdir, 0777)
-	for lv := range logFileNames {
-		logFilePath := logdir + filePrefix + logFileNames[lv]
-		f, err := os.OpenFile(logFilePath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
-		if err != nil {
-			log.Fatal(err)
-		}
-		os.Chmod(logFilePath, 0644)
-		logfiles[lv] = f
-		loggers[lv] = log.New(f, "", log.LstdFlags)
+	logFilePath := filepath.Join(logdir, filePrefix+logFileNames)
+	f, err := os.OpenFile(logFilePath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
+	if err != nil && mode&LogFile != 0 {
+		log.Fatal(err)
 	}
-	var le string
+	stdLog := log.New(f, "", log.LstdFlags|log.Lmicroseconds)
+	le := "\n"
 	if runtime.GOOS == "windows" {
 		le = "\r\n"
-	} else {
-		le = "\n"
 	}
-	pLog := &logger{loggers, logfiles, level, logdir, &sync.Mutex{}, le, os.Getpid(), maxLogSize, mode}
+	pLog := &logger{logger: stdLog,
+		files:      f,
+		logDir:     logdir,
+		lineEnding: le,
+		pid:        os.Getpid(),
+		mode:       mode,
+		stdLogger:  log.New(os.Stdout, "", 0)}
+	pLog.setMaxSize(maxLogSize)
+	pLog.setLevel(level)
+	pLog.stdLogger.SetFlags(log.LstdFlags | log.Lmicroseconds)
 	go pLog.checkFile()
 	return pLog
 }

 func (l *logger) setLevel(level LogLevel) {
-	l.mtx.Lock()
-	defer l.mtx.Unlock()
-	l.level = level
+	l.level.Store(int32(level))
 }
+
+func (l *logger) setMaxSize(size int64) {
+	l.maxLogSize.Store(size)
+}
+
 func (l *logger) setMode(mode int) {
 	l.mtx.Lock()
 	defer l.mtx.Unlock()
 	l.mode = mode
 }

+func (l *logger) close() {
+	l.checkFileRunning = false
+	l.files.Close()
+}
+
 func (l *logger) checkFile() {
-	if l.maxLogSize <= 0 {
+	if l.maxLogSize.Load() <= 0 {
 		return
 	}
+	l.checkFileRunning = true
 	ticker := time.NewTicker(time.Minute)
-	for {
+	for l.checkFileRunning {
 		select {
 		case <-ticker.C:
-			l.mtx.Lock()
-			for lv, logFile := range l.files {
-				f, e := logFile.Stat()
-				if e != nil {
-					continue
-				}
-				if f.Size() <= l.maxLogSize {
-					continue
-				}
-				logFile.Close()
-				fname := f.Name()
-				backupPath := l.logDir + fname + ".0"
-				os.Remove(backupPath)
-				os.Rename(l.logDir+fname, backupPath)
-				newFile, e := os.OpenFile(l.logDir+fname, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
-				if e == nil {
-					l.loggers[lv].SetOutput(newFile)
-					l.files[lv] = newFile
-				}
+			f, e := l.files.Stat()
+			if e != nil {
+				continue
 			}
-			l.mtx.Unlock()
+			if f.Size() <= l.maxLogSize.Load() {
+				continue
+			}
+			l.mtx.Lock()
+			l.files.Close()
+			fname := f.Name()
+			backupPath := filepath.Join(l.logDir, fname+".0")
+			err := os.Remove(backupPath)
+			if err != nil {
+				log.Println("remove openp2p.log0 error:", err)
+			}
+			if err = os.Rename(filepath.Join(l.logDir, fname), backupPath); err != nil {
+				log.Println("rename openp2p.log error:", err)
+			}
+			if newFile, e := os.OpenFile(filepath.Join(l.logDir, fname), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644); e == nil {
+
+				l.logger.SetOutput(newFile)
+				l.files = newFile
+				l.mtx.Unlock()
+			}
+		case <-time.After(time.Second * 1):
 		}
+
 	}
 }

 func (l *logger) Printf(level LogLevel, format string, params ...interface{}) {
-	l.mtx.Lock()
-	defer l.mtx.Unlock()
-	if level < l.level {
+	if level < LogLevel(l.level.Load()) {
 		return
 	}
+	l.mtx.Lock()
+	defer l.mtx.Unlock()
+
 	pidAndLevel := []interface{}{l.pid, loglevel[level]}
 	params = append(pidAndLevel, params...)
-	if l.mode == LogFile || l.mode == LogFileAndConsole {
-		l.loggers[0].Printf("%d %s "+format+l.lineEnding, params...)
+	if l.mode&LogFile != 0 {
+		l.logger.Printf("%d %s "+format+l.lineEnding, params...)
 	}
-	if l.mode == LogConsole || l.mode == LogFileAndConsole {
-		log.Printf("%d %s "+format+l.lineEnding, params...)
+	if l.mode&LogConsole != 0 {
+		l.stdLogger.Printf("%d %s "+format+l.lineEnding, params...)
 	}
 }

 func (l *logger) Println(level LogLevel, params ...interface{}) {
-	l.mtx.Lock()
-	defer l.mtx.Unlock()
-	if level < l.level {
+	if level < LogLevel(l.level.Load()) {
 		return
 	}
+	l.mtx.Lock()
+	defer l.mtx.Unlock()
 	pidAndLevel := []interface{}{l.pid, " ", loglevel[level], " "}
 	params = append(pidAndLevel, params...)
 	params = append(params, l.lineEnding)
-	if l.mode == LogFile || l.mode == LogFileAndConsole {
-		l.loggers[0].Print(params...)
+	if l.mode&LogFile != 0 {
+		l.logger.Print(params...)
 	}
-	if l.mode == LogConsole || l.mode == LogFileAndConsole {
-		log.Print(params...)
+	if l.mode&LogConsole != 0 {
+		l.stdLogger.Print(params...)
 	}
 }
+
+func (l *logger) d(format string, params ...interface{}) {
+	l.Printf(LvDEBUG, format, params...)
+}
+
+func (l *logger) i(format string, params ...interface{}) {
+	l.Printf(LvINFO, format, params...)
+}
+
+func (l *logger) w(format string, params ...interface{}) {
+	l.Printf(LvWARN, format, params...)
+}
+
+func (l *logger) e(format string, params ...interface{}) {
+	l.Printf(LvERROR, format, params...)
+}
+
+func (l *logger) dev(format string, params ...interface{}) {
+	l.Printf(LvDev, format, params...)
+}
+
+func InitForUnitTest(lv LogLevel) {
+	baseDir := filepath.Dir(os.Args[0])
+	os.Chdir(baseDir) // for system service
+	gLog = NewLogger(baseDir, ProductName, lv, 1024*1024, LogFile|LogConsole)
+}
--- a/core/nat.go
+++ b/core/nat.go
@@ -1,192 +1,214 @@
-package openp2p
-
-import (
-	"encoding/json"
-	"fmt"
-	"log"
-	"math/rand"
-	"net"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	reuse "github.com/openp2p-cn/go-reuseport"
-)
-
-func natTCP(serverHost string, serverPort int, localPort int) (publicIP string, publicPort int) {
-	// dialer := &net.Dialer{
-	// 	LocalAddr: &net.TCPAddr{
-	// 		IP:   net.ParseIP("0.0.0.0"),
-	// 		Port: localPort,
-	// 	},
-	// }
-	conn, err := reuse.DialTimeout("tcp4", fmt.Sprintf("%s:%d", "0.0.0.0", localPort), fmt.Sprintf("%s:%d", serverHost, serverPort), time.Second*5)
-	// conn, err := net.Dial("tcp4", fmt.Sprintf("%s:%d", serverHost, serverPort))
-	if err != nil {
-		fmt.Printf("Dial tcp4 %s:%d error:%s", serverHost, serverPort, err)
-		return
-	}
-	defer conn.Close()
-	_, wrerr := conn.Write([]byte("1"))
-	if wrerr != nil {
-		fmt.Printf("Write error: %s\n", wrerr)
-		return
-	}
-	b := make([]byte, 1000)
-	conn.SetReadDeadline(time.Now().Add(time.Second * 5))
-	n, rderr := conn.Read(b)
-	if rderr != nil {
-		fmt.Printf("Read error: %s\n", rderr)
-		return
-	}
-	arr := strings.Split(string(b[:n]), ":")
-	if len(arr) < 2 {
-		return
-	}
-	publicIP = arr[0]
-	port, _ := strconv.ParseInt(arr[1], 10, 32)
-	publicPort = int(port)
-	return
-
-}
-func natTest(serverHost string, serverPort int, localPort int) (publicIP string, publicPort int, err error) {
-	gLog.Println(LvDEBUG, "natTest start")
-	defer gLog.Println(LvDEBUG, "natTest end")
-	conn, err := net.ListenPacket("udp", fmt.Sprintf(":%d", localPort))
-	if err != nil {
-		gLog.Println(LvERROR, "natTest listen udp error:", err)
-		return "", 0, err
-	}
-	defer conn.Close()
-
-	dst, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", serverHost, serverPort))
-	if err != nil {
-		return "", 0, err
-	}
-
-	// The connection can write data to the desired address.
-	msg, err := newMessage(MsgNATDetect, 0, nil)
-	_, err = conn.WriteTo(msg, dst)
-	if err != nil {
-		return "", 0, err
-	}
-	deadline := time.Now().Add(NatTestTimeout)
-	err = conn.SetReadDeadline(deadline)
-	if err != nil {
-		return "", 0, err
-	}
-	buffer := make([]byte, 1024)
-	nRead, _, err := conn.ReadFrom(buffer)
-	if err != nil {
-		gLog.Println(LvERROR, "NAT detect error:", err)
-		return "", 0, err
-	}
-	natRsp := NatDetectRsp{}
-	err = json.Unmarshal(buffer[openP2PHeaderSize:nRead], &natRsp)
-
-	return natRsp.IP, natRsp.Port, nil
-}
-
-func getNATType(host string, udp1 int, udp2 int) (publicIP string, NATType int, hasIPvr int, hasUPNPorNATPMP int, err error) {
-	// the random local port may be used by other.
-	localPort := int(rand.Uint32()%15000 + 50000)
-	echoPort := gConf.Network.TCPPort
-	ip1, port1, err := natTest(host, udp1, localPort)
-	if err != nil {
-		return "", 0, 0, 0, err
-	}
-	hasIPv4, hasUPNPorNATPMP := publicIPTest(ip1, echoPort)
-	gLog.Printf(LvINFO, "local port:%d, nat port:%d, hasIPv4:%d, UPNP:%d", localPort, port1, hasIPv4, hasUPNPorNATPMP)
-	_, port2, err := natTest(host, udp2, localPort) // 2rd nat test not need testing publicip
-	gLog.Printf(LvDEBUG, "local port:%d  nat port:%d", localPort, port2)
-	if err != nil {
-		return "", 0, hasIPv4, hasUPNPorNATPMP, err
-	}
-	natType := NATSymmetric
-	if port1 == port2 {
-		natType = NATCone
-	}
-	return ip1, natType, hasIPv4, hasUPNPorNATPMP, nil
-}
-
-func publicIPTest(publicIP string, echoPort int) (hasPublicIP int, hasUPNPorNATPMP int) {
-	var echoConn *net.UDPConn
-	var wg sync.WaitGroup
-	wg.Add(1)
-	go func() {
-		gLog.Println(LvDEBUG, "echo server start")
-		var err error
-		echoConn, err = net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4zero, Port: echoPort})
-		if err != nil {
-			gLog.Println(LvERROR, "echo server listen error:", err)
-			return
-		}
-		buf := make([]byte, 1600)
-		// close outside for breaking the ReadFromUDP
-		// wait 5s for echo testing
-		wg.Done()
-		echoConn.SetReadDeadline(time.Now().Add(time.Second * 30))
-		n, addr, err := echoConn.ReadFromUDP(buf)
-		if err != nil {
-			return
-		}
-		echoConn.WriteToUDP(buf[0:n], addr)
-		gLog.Println(LvDEBUG, "echo server end")
-	}()
-	wg.Wait() // wait echo udp
-	defer echoConn.Close()
-	// testing for public ip
-	for i := 0; i < 2; i++ {
-		if i == 1 {
-			// test upnp or nat-pmp
-			gLog.Println(LvDEBUG, "upnp test start")
-			nat, err := Discover()
-			if err != nil || nat == nil {
-				gLog.Println(LvDEBUG, "could not perform UPNP discover:", err)
-				break
-			}
-			ext, err := nat.GetExternalAddress()
-			if err != nil {
-				gLog.Println(LvDEBUG, "could not perform UPNP external address:", err)
-				break
-			}
-			log.Println("PublicIP:", ext)
-
-			externalPort, err := nat.AddPortMapping("udp", echoPort, echoPort, "openp2p", 30)
-			if err != nil {
-				gLog.Println(LvDEBUG, "could not add udp UPNP port mapping", externalPort)
-				break
-			} else {
-				nat.AddPortMapping("tcp", echoPort, echoPort, "openp2p", 604800)
-			}
-		}
-		gLog.Printf(LvDEBUG, "public ip test start %s:%d", publicIP, echoPort)
-		conn, err := net.ListenUDP("udp", nil)
-		if err != nil {
-			break
-		}
-		defer conn.Close()
-		dst, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", publicIP, echoPort))
-		if err != nil {
-			break
-		}
-		conn.WriteTo([]byte("echo"), dst)
-		buf := make([]byte, 1600)
-
-		// wait for echo testing
-		conn.SetReadDeadline(time.Now().Add(PublicIPEchoTimeout))
-		_, _, err = conn.ReadFromUDP(buf)
-		if err == nil {
-			if i == 1 {
-				gLog.Println(LvDEBUG, "UPNP or NAT-PMP:YES")
-				hasUPNPorNATPMP = 1
-			} else {
-				gLog.Println(LvDEBUG, "public ip:YES")
-				hasPublicIP = 1
-			}
-			break
-		}
-	}
-	return
-}
+package openp2p
+
+import (
+	"encoding/json"
+	"fmt"
+	"math/rand"
+	"net"
+	"strconv"
+	"strings"
+	"time"
+
+	upnp "openp2p/pkg/upnp"
+
+	reuse "github.com/openp2p-cn/go-reuseport"
+)
+
+func natDetectTCP(serverHost string, serverPort int, lp int) (publicIP string, publicPort int, localPort int, err error) {
+	gLog.dev("natDetectTCP start")
+	defer gLog.dev("natDetectTCP end")
+	conn, err := reuse.DialTimeout("tcp4", fmt.Sprintf("0.0.0.0:%d", lp), fmt.Sprintf("%s:%d", serverHost, serverPort), NatDetectTimeout)
+	if err != nil {
+		err = fmt.Errorf("dial tcp4 %s:%d error: %w", serverHost, serverPort, err)
+		return
+	}
+	defer conn.Close()
+
+	localAddr := conn.LocalAddr().(*net.TCPAddr)
+	localPort = localAddr.Port
+
+	if _, err = conn.Write([]byte("1")); err != nil {
+		err = fmt.Errorf("write error: %w", err)
+		return
+	}
+
+	b := make([]byte, 1000)
+	conn.SetReadDeadline(time.Now().Add(NatDetectTimeout))
+	n, err := conn.Read(b)
+	if err != nil {
+		err = fmt.Errorf("read error: %w", err)
+		return
+	}
+
+	response := strings.Split(string(b[:n]), ":")
+	if len(response) < 2 {
+		err = fmt.Errorf("invalid response format: %s", string(b[:n]))
+		return
+	}
+
+	publicIP = response[0]
+	port, err := strconv.Atoi(response[1])
+	if err != nil {
+		err = fmt.Errorf("invalid port format: %w", err)
+		return
+	}
+	publicPort = port
+
+	return
+}
+
+func natDetectUDP(serverHost string, serverPort int, localPort int) (publicIP string, publicPort int, err error) {
+	gLog.dev("natDetectUDP start")
+	defer gLog.dev("natDetectUDP end")
+	conn, err := net.ListenPacket("udp", fmt.Sprintf(":%d", localPort))
+	if err != nil {
+		gLog.e("natDetectUDP listen udp error:%s", err)
+		return "", 0, err
+	}
+	defer conn.Close()
+
+	dst, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", serverHost, serverPort))
+	if err != nil {
+		return "", 0, err
+	}
+
+	// The connection can write data to the desired address.
+	msg, err := newMessage(MsgNATDetect, MsgNAT, nil)
+	_, err = conn.WriteTo(msg, dst)
+	if err != nil {
+		return "", 0, err
+	}
+	deadline := time.Now().Add(NatDetectTimeout)
+	err = conn.SetReadDeadline(deadline)
+	if err != nil {
+		return "", 0, err
+	}
+	buffer := make([]byte, 1024)
+	nRead, _, err := conn.ReadFrom(buffer)
+	if err != nil {
+		gLog.e("NAT detect error:%s", err)
+		return "", 0, err
+	}
+	natRsp := NatDetectRsp{}
+	json.Unmarshal(buffer[openP2PHeaderSize:nRead], &natRsp)
+
+	return natRsp.IP, natRsp.Port, nil
+}
+
+func getNATType(host string, detectPort1 int, detectPort2 int) (publicIP string, NATType int, err error) {
+	setUPNP(gConf.Network.PublicIPPort)
+	// the random local port may be used by other.
+	localPort := int(rand.Uint32()%15000 + 50000)
+
+	ip1, port1, err := natDetectUDP(host, detectPort1, localPort)
+	if err != nil {
+		// udp block try tcp
+		gLog.w("udp block, try tcp nat detect")
+		if ip1, port1, _, err = natDetectTCP(host, detectPort1, localPort); err != nil {
+			return "", 0, err
+		}
+	}
+	_, port2, err := natDetectUDP(host, detectPort2, localPort) // 2rd nat test not need testing publicip
+	if err != nil {
+		gLog.w("udp block, try tcp nat detect")
+		if _, port2, _, err = natDetectTCP(host, detectPort2, localPort); err != nil {
+			return "", 0, err
+		}
+	}
+	gLog.d("local port:%d  nat port:%d", localPort, port2)
+	natType := NATSymmetric
+	if port1 == port2 {
+		natType = NATCone
+	}
+	return ip1, natType, nil
+}
+
+func publicIPTest(publicIP string, echoPort int) (hasPublicIP int, hasUPNPorNATPMP int) {
+	if publicIP == "" || echoPort == 0 {
+		return
+	}
+	var echoConn *net.UDPConn
+	gLog.d("echo server start")
+	var err error
+	echoConn, err = net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4zero, Port: echoPort})
+	if err != nil { // listen error
+		gLog.e("echo server listen error:%s", err)
+		return
+	}
+	defer echoConn.Close()
+	// testing for public ip
+	for i := 0; i < 2; i++ {
+		if i == 1 {
+			// test upnp or nat-pmp
+			gLog.d("upnp test start")
+			// 7 days for udp connection
+			// 7 days for tcp connection
+			setUPNP(echoPort)
+		}
+		gLog.d("public ip test start %s:%d", publicIP, echoPort)
+		conn, err := net.ListenUDP("udp", nil)
+		if err != nil {
+			break
+		}
+		defer conn.Close()
+		dst, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", gConf.Network.ServerIP, gConf.Network.ServerPort))
+		if err != nil {
+			break
+		}
+
+		// The connection can write data to the desired address.
+		msg, _ := newMessage(MsgNATDetect, MsgPublicIP, NatDetectReq{EchoPort: echoPort})
+		_, err = conn.WriteTo(msg, dst)
+		if err != nil {
+			continue
+		}
+		buf := make([]byte, 1600)
+
+		// wait for echo testing
+		echoConn.SetReadDeadline(time.Now().Add(PublicIPEchoTimeout))
+		nRead, _, err := echoConn.ReadFromUDP(buf)
+		if err != nil {
+			gLog.d("publicIPTest echoConn read timeout:%s", err)
+			continue
+		}
+		natRsp := NatDetectRsp{}
+		err = json.Unmarshal(buf[openP2PHeaderSize:nRead], &natRsp)
+		if err != nil {
+			gLog.d("publicIPTest Unmarshal error:%s", err)
+			continue
+		}
+		if natRsp.Port == echoPort {
+			if i == 1 {
+				gLog.d("UPNP or NAT-PMP:YES")
+				hasUPNPorNATPMP = 1
+			} else {
+				gLog.d("public ip:YES")
+				hasPublicIP = 1
+			}
+			break
+		}
+	}
+	return
+}
+
+func setUPNP(echoPort int) {
+	nat := upnp.Any() // Initialize the NAT interface
+	if nat == nil {
+		gLog.d("NAT interface is not available")
+		return
+	}
+	ext, err := nat.ExternalIP()
+	if err != nil {
+		gLog.d("could not perform UPNP external address:%s", err)
+		return
+	}
+	gLog.i("PublicIP:%v", ext)
+
+	externalPort, err := nat.AddMapping("udp", echoPort, echoPort, "openp2p", 604800)
+	if err != nil {
+		gLog.d("could not add udp UPNP port mapping %d", externalPort)
+		return
+	} else {
+		nat.AddMapping("tcp", echoPort, echoPort, "openp2p", 604800)
+	}
+}
--- a/core/openp2p.go
+++ b/core/openp2p.go
@@ -1,104 +1,140 @@
-package openp2p
-
-import (
-	"fmt"
-	"math/rand"
-	"os"
-	"path/filepath"
-	"strconv"
-	"time"
-)
-
-func Run() {
-	rand.Seed(time.Now().UnixNano())
-	baseDir := filepath.Dir(os.Args[0])
-	os.Chdir(baseDir) // for system service
-	gLog = NewLogger(baseDir, ProductName, LvDEBUG, 1024*1024, LogFileAndConsole)
-	// TODO: install sub command, deamon process
-	if len(os.Args) > 1 {
-		switch os.Args[1] {
-		case "version", "-v", "--version":
-			fmt.Println(OpenP2PVersion)
-			return
-		case "update":
-			gLog = NewLogger(baseDir, ProductName, LvDEBUG, 1024*1024, LogFileAndConsole)
-			targetPath := filepath.Join(defaultInstallPath, defaultBinName)
-			d := daemon{}
-			err := d.Control("restart", targetPath, nil)
-			if err != nil {
-				gLog.Println(LvERROR, "restart service error:", err)
-			} else {
-				gLog.Println(LvINFO, "restart service ok.")
-			}
-			return
-		case "install":
-			install()
-			return
-		case "uninstall":
-			uninstall()
-			return
-		}
-	} else {
-		installByFilename()
-	}
-	parseParams("")
-	gLog.Println(LvINFO, "openp2p start. version: ", OpenP2PVersion)
-	gLog.Println(LvINFO, "Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
-
-	if gConf.daemonMode {
-		d := daemon{}
-		d.run()
-		return
-	}
-
-	gLog.Println(LvINFO, &gConf)
-	setFirewall()
-	err := setRLimit()
-	if err != nil {
-		gLog.Println(LvINFO, "setRLimit error:", err)
-	}
-	network := P2PNetworkInstance(&gConf.Network)
-	if ok := network.Connect(30000); !ok {
-		gLog.Println(LvERROR, "P2PNetwork login error")
-		return
-	}
-	gLog.Println(LvINFO, "waiting for connection...")
-	forever := make(chan bool)
-	<-forever
-}
-
-var network *P2PNetwork
-
-// for Android app
-// gomobile not support uint64 exported to java
-func RunAsModule(baseDir string, token string, bw int, logLevel int) *P2PNetwork {
-	rand.Seed(time.Now().UnixNano())
-	os.Chdir(baseDir) // for system service
-	gLog = NewLogger(baseDir, ProductName, LvDEBUG, 1024*1024, LogFileAndConsole)
-
-	parseParams("")
-
-	n, err := strconv.ParseUint(token, 10, 64)
-	if err == nil {
-		gConf.setToken(n)
-	}
-	gLog.setLevel(LogLevel(logLevel))
-	gConf.setShareBandwidth(bw)
-	gLog.Println(LvINFO, "openp2p start. version: ", OpenP2PVersion)
-	gLog.Println(LvINFO, "Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
-	gLog.Println(LvINFO, &gConf)
-
-	network = P2PNetworkInstance(&gConf.Network)
-	if ok := network.Connect(30000); !ok {
-		gLog.Println(LvERROR, "P2PNetwork login error")
-		return nil
-	}
-	gLog.Println(LvINFO, "waiting for connection...")
-	return network
-}
-
-func GetToken(baseDir string) string {
-	os.Chdir(baseDir)
-	gConf.load()
-	return fmt.Sprintf("%d", gConf.Network.Token)
-}
+package openp2p
+
+import (
+	"fmt"
+	"log"
+	"math/rand"
+	"os"
+	"path/filepath"
+	"strconv"
+	"time"
+)
+
+var GNetwork *P2PNetwork
+
+func Run() {
+	rand.Seed(time.Now().UnixNano())
+	baseDir := filepath.Dir(os.Args[0])
+	os.Chdir(baseDir) // for system service
+	gLog = NewLogger(baseDir, ProductName, LvDEBUG, 1024*1024, LogFile|LogConsole)
+	if len(os.Args) > 1 {
+		switch os.Args[1] {
+		case "version", "-v", "--version":
+			fmt.Println(OpenP2PVersion)
+			return
+		case "install":
+			install()
+			return
+		case "uninstall":
+			uninstall(true)
+			return
+		case "start":
+			d := daemon{}
+			err := d.Control("start", "", nil)
+			if err != nil {
+				log.Println("openp2p start error:", err)
+				return
+			}
+			log.Println("openp2p start ok")
+			return
+		case "stop":
+			d := daemon{}
+			err := d.Control("stop", "", nil)
+			if err != nil {
+				log.Println("openp2p stop error:", err)
+				return
+			}
+			log.Println("openp2p stop ok")
+			return
+		}
+	} else {
+		installByFilename()
+	}
+	parseParams("", "")
+	gLog.i("openp2p start. version: %s", OpenP2PVersion)
+	gLog.i("Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
+
+	if gConf.daemonMode {
+		d := daemon{}
+		d.run()
+		return
+	}
+
+	gLog.i("node=%s, serverHost=%s, serverPort=%d", gConf.Network.Node, gConf.Network.ServerHost, gConf.Network.ServerPort)
+	setFirewall()
+	err := setRLimit()
+	if err != nil {
+		gLog.i("setRLimit error:%s", err)
+	}
+	P2PNetworkInstance()
+	if ok := GNetwork.Connect(30000); !ok {
+		gLog.e("P2PNetwork login error")
+		return
+	}
+	// gLog.i("waiting for connection...")
+	forever := make(chan bool)
+	<-forever
+}
+
+// for Android app
+// gomobile not support uint64 exported to java
+
+func RunAsModule(baseDir string, token string, bw int, logLevel int) *P2PNetwork {
+	rand.Seed(time.Now().UnixNano())
+	os.Chdir(baseDir) // for system service
+	gLog = NewLogger(baseDir, ProductName, LvINFO, 1024*1024, LogFile|LogConsole)
+
+	parseParams("", "")
+
+	n, err := strconv.ParseUint(token, 10, 64)
+	if err == nil && n > 0 {
+		gConf.setToken(n)
+	}
+	if n <= 0 && gConf.Network.Token == 0 { // not input token
+		return nil
+	}
+	// gLog.setLevel(LogLevel(logLevel))
+	gConf.setShareBandwidth(bw)
+	gLog.i("openp2p start. version: %s", OpenP2PVersion)
+	gLog.i("Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
+	gLog.i("node=%s, serverHost=%s, serverPort=%d", gConf.Network.Node, gConf.Network.ServerHost, gConf.Network.ServerPort)
+
+	P2PNetworkInstance()
+	if ok := GNetwork.Connect(30000); !ok {
+		gLog.e("P2PNetwork login error")
+		return nil
+	}
+	// gLog.i("waiting for connection...")
+	return GNetwork
+}
+
+func RunCmd(cmd string) {
+	rand.Seed(time.Now().UnixNano())
+	baseDir := filepath.Dir(os.Args[0])
+	os.Chdir(baseDir) // for system service
+	gLog = NewLogger(baseDir, ProductName, LvINFO, 1024*1024, LogFile|LogConsole)
+
+	parseParams("", cmd)
+	setFirewall()
+	err := setRLimit()
+	if err != nil {
+		gLog.i("setRLimit error:%s", err)
+	}
+	P2PNetworkInstance()
+	if ok := GNetwork.Connect(30000); !ok {
+		gLog.e("P2PNetwork login error")
+		return
+	}
+	forever := make(chan bool)
+	<-forever
+}
+
+func GetToken(baseDir string) string {
+	os.Chdir(baseDir)
+	gConf.load()
+	return fmt.Sprintf("%d", gConf.Network.Token)
+}
+
+func Stop() {
+	os.Exit(0)
+}
--- a/core/optun.go
+++ b/core/optun.go
@@ -0,0 +1,23 @@
+package openp2p
+
+import (
+	"github.com/openp2p-cn/wireguard-go/tun"
+)
+
+const optunMTU = 1420
+
+var AndroidSDWANConfig chan []byte
+var preAndroidSDWANConfig string
+
+type optun struct {
+	tunName string
+	dev     tun.Device
+}
+
+func (t *optun) Stop() error {
+	t.dev.Close()
+	return nil
+}
+func init() {
+	AndroidSDWANConfig = make(chan []byte, 1)
+}
--- a/core/optun_android.go
+++ b/core/optun_android.go
@@ -0,0 +1,95 @@
+// optun_android.go
+//go:build android
+// +build android
+
+package openp2p
+
+import (
+	"time"
+)
+
+const (
+	tunIfaceName    = "optun"
+	PIHeaderSize    = 0
+	ReadTunBuffSize = 2048
+	ReadTunBuffNum  = 16
+)
+
+var AndroidReadTun chan []byte // TODO: multi channel
+var AndroidWriteTun chan []byte
+
+func (t *optun) Start(localAddr string, detail *SDWANInfo) error {
+
+	return nil
+}
+
+func (t *optun) Read(bufs [][]byte, sizes []int, offset int) (n int, err error) {
+	bufs[0] = <-AndroidReadTun
+	sizes[0] = len(bufs[0])
+	return 1, nil
+}
+
+func (t *optun) Write(bufs [][]byte, offset int) (int, error) {
+	AndroidWriteTun <- bufs[0]
+	return len(bufs[0]), nil
+}
+
+func AndroidRead(data []byte, len int) {
+	head := PacketHeader{}
+	parseHeader(data, &head)
+	// gLog.dev("AndroidRead tun dst ip=%s,len=%d", net.IP{byte(head.dst >> 24), byte(head.dst >> 16), byte(head.dst >> 8), byte(head.dst)}.String(), len)
+	buf := make([]byte, len)
+	copy(buf, data)
+	AndroidReadTun <- buf
+}
+
+func AndroidWrite(buf []byte, timeoutMs int) int {
+	timeout := time.Duration(timeoutMs) * time.Millisecond
+	select {
+	case p := <-AndroidWriteTun:
+		if len(p) > int(gConf.sdwan.Mtu) {
+			gLog.e("AndroidWrite packet too large %d", len(p))
+		}
+		copy(buf, p)
+		return len(p)
+	case <-time.After(timeout):
+		return 0
+	}
+}
+
+func GetAndroidSDWANConfig(buf []byte) int {
+	p := <-AndroidSDWANConfig
+	copy(buf, p)
+	gLog.i("AndroidSDWANConfig=%s", p)
+	return len(p)
+}
+
+func GetAndroidNodeName() string {
+	gLog.i("GetAndroidNodeName=%s", gConf.Network.Node)
+	return gConf.Network.Node
+}
+
+func setTunAddr(ifname, localAddr, remoteAddr string, wintun interface{}) error {
+	// TODO:
+	return nil
+}
+
+func addRoute(dst, gw, ifname string) error {
+	// TODO:
+	return nil
+}
+
+func delRoute(dst, gw string) error {
+	// TODO:
+	return nil
+}
+
+func delRoutesByGateway(gateway string) error {
+	// TODO:
+	return nil
+}
+
+func init() {
+	AndroidReadTun = make(chan []byte, 1000)
+	AndroidWriteTun = make(chan []byte, 1000)
+}
--- a/core/optun_darwin.go
+++ b/core/optun_darwin.go
@@ -0,0 +1,90 @@
+package openp2p
+
+import (
+	"fmt"
+	"net"
+	"os/exec"
+	"strings"
+
+	"github.com/openp2p-cn/wireguard-go/tun"
+)
+
+const (
+	tunIfaceName    = "utun"
+	PIHeaderSize    = 4 // utun has no IFF_NO_PI
+	ReadTunBuffSize = 2048
+	ReadTunBuffNum  = 16
+)
+
+func (t *optun) Start(localAddr string, detail *SDWANInfo) error {
+	var err error
+	t.tunName = tunIfaceName
+	t.dev, err = tun.CreateTUN(t.tunName, int(detail.Mtu))
+	if err != nil {
+		return err
+	}
+	t.tunName, _ = t.dev.Name()
+	return nil
+}
+
+func (t *optun) Read(bufs [][]byte, sizes []int, offset int) (n int, err error) {
+	return t.dev.Read(bufs, sizes, offset)
+}
+
+func (t *optun) Write(bufs [][]byte, offset int) (int, error) {
+	return t.dev.Write(bufs, offset)
+}
+
+func setTunAddr(ifname, localAddr, remoteAddr string, wintun interface{}) error {
+	li, _, err := net.ParseCIDR(localAddr)
+	if err != nil {
+		return fmt.Errorf("parse local addr fail:%s", err)
+	}
+	ri, _, err := net.ParseCIDR(remoteAddr)
+	if err != nil {
+		return fmt.Errorf("parse remote addr fail:%s", err)
+	}
+	err = exec.Command("ifconfig", ifname, "inet", li.String(), ri.String(), "up").Run()
+	return err
+}
+
+func addRoute(dst, gw, ifname string) error {
+	err := exec.Command("route", "add", dst, gw).Run()
+	return err
+}
+
+func delRoute(dst, gw string) error {
+	err := exec.Command("route", "delete", dst, "-gateway", gw).Run()
+	return err
+}
+func delRoutesByGateway(gateway string) error {
+	cmd := exec.Command("netstat", "-rn")
+	output, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+
+	lines := strings.Split(string(output), "\n")
+	for _, line := range lines {
+		if !strings.Contains(line, gateway) {
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) >= 2 {
+			cmd := exec.Command("route", "delete", fields[0], gateway)
+			err := cmd.Run()
+			if err != nil {
+				gLog.e("Delete route %s error:%s", fields[0], err)
+				continue
+			}
+			gLog.i("Delete route ok: %s %s\n", fields[0], gateway)
+		}
+	}
+	return nil
+}
+func addTunAddr(localAddr, remoteAddr string) error {
+	return nil
+}
+func delTunAddr(localAddr, remoteAddr string) error {
+	return nil
+}
--- a/core/optun_linux.go
+++ b/core/optun_linux.go
@@ -0,0 +1,138 @@
+//go:build !android
+// +build !android
+
+// optun_linux.go
+package openp2p
+
+import (
+	"fmt"
+	"net"
+	"os"
+
+	"github.com/openp2p-cn/wireguard-go/tun"
+	"github.com/vishvananda/netlink"
+)
+
+const (
+	tunIfaceName = "optun"
+	PIHeaderSize = 0
+	// sdwan
+	ReadTunBuffSize = 2048
+	ReadTunBuffNum  = 16
+)
+
+var previousIP = ""
+
+func (t *optun) Start(localAddr string, detail *SDWANInfo) error {
+	var err error
+	t.tunName = tunIfaceName
+	t.dev, err = tun.CreateTUN(t.tunName, int(detail.Mtu))
+	if err != nil {
+		return err
+	}
+	err = os.WriteFile("/proc/sys/net/ipv4/ip_forward", []byte("1"), 0644)
+	if err != nil {
+		gLog.e("write ip_forward error:%s", err)
+	}
+	return nil
+}
+
+func (t *optun) Read(bufs [][]byte, sizes []int, offset int) (n int, err error) {
+	return t.dev.Read(bufs, sizes, offset)
+}
+
+func (t *optun) Write(bufs [][]byte, offset int) (int, error) {
+	return t.dev.Write(bufs, offset)
+}
+
+func setTunAddr(ifname, localAddr, remoteAddr string, wintun interface{}) error {
+	ifce, err := netlink.LinkByName(ifname)
+	if err != nil {
+		return err
+	}
+	netlink.LinkSetMTU(ifce, int(gConf.getSDWAN().Mtu))
+	netlink.LinkSetTxQLen(ifce, 1000)
+	netlink.LinkSetUp(ifce)
+
+	ln, err := netlink.ParseIPNet(localAddr)
+	if err != nil {
+		return err
+	}
+	ln.Mask = net.CIDRMask(32, 32)
+	rn, err := netlink.ParseIPNet(remoteAddr)
+	if err != nil {
+		return err
+	}
+	rn.Mask = net.CIDRMask(32, 32)
+
+	addr := &netlink.Addr{
+		IPNet: ln,
+		Peer:  rn,
+	}
+	if previousIP != "" {
+		lnDel, err := netlink.ParseIPNet(previousIP)
+		if err != nil {
+			return err
+		}
+		lnDel.Mask = net.CIDRMask(32, 32)
+
+		addrDel := &netlink.Addr{
+			IPNet: lnDel,
+			Peer:  rn,
+		}
+		netlink.AddrDel(ifce, addrDel)
+	}
+	previousIP = localAddr
+	return netlink.AddrAdd(ifce, addr)
+}
+
+func addRoute(dst, gw, ifname string) error {
+	_, networkid, err := net.ParseCIDR(dst)
+	if err != nil {
+		return err
+	}
+	ipGW := net.ParseIP(gw)
+	if ipGW == nil {
+		return fmt.Errorf("parse gateway %s failed", gw)
+	}
+	route := &netlink.Route{
+		Dst: networkid,
+		Gw:  ipGW,
+	}
+	return netlink.RouteAdd(route)
+}
+
+func delRoute(dst, gw string) error {
+	_, networkid, err := net.ParseCIDR(dst)
+	if err != nil {
+		return err
+	}
+	route := &netlink.Route{
+		Dst: networkid,
+	}
+	return netlink.RouteDel(route)
+}
+
+func delRoutesByGateway(gateway string) error {
+	ipGW := net.ParseIP(gateway)
+	if ipGW == nil {
+		return fmt.Errorf("invalid gateway IP: %s", gateway)
+	}
+
+	routes, err := netlink.RouteList(nil, netlink.FAMILY_V4)
+	if err != nil {
+		return fmt.Errorf("failed to list routes: %v", err)
+	}
+
+	for _, route := range routes {
+		if route.Gw != nil && route.Gw.Equal(ipGW) || (route.Dst != nil && route.Dst.IP.Equal(ipGW)) {
+			err := netlink.RouteDel(&route)
+			if err != nil {
+				gLog.e("Failed to delete route: %v, error: %v", route, err)
+				continue
+			}
+			gLog.i("Deleted route: %v", route)
+		}
+	}
+	return nil
+}
--- a/core/optun_other.go
+++ b/core/optun_other.go
@@ -0,0 +1,135 @@
+//go:build !linux && !windows && !darwin
+// +build !linux,!windows,!darwin
+
+package openp2p
+
+import (
+	"fmt"
+	"net"
+	"os/exec"
+	"strings"
+
+	"github.com/openp2p-cn/wireguard-go/tun"
+	"github.com/vishvananda/netlink"
+)
+
+const (
+	tunIfaceName    = "optun"
+	PIHeaderSize    = 0
+	ReadTunBuffSize = 2048
+	ReadTunBuffNum  = 16
+)
+
+var previousIP = ""
+
+func (t *optun) Start(localAddr string, detail *SDWANInfo) error {
+	var err error
+	t.tunName = tunIfaceName
+	t.dev, err = tun.CreateTUN(t.tunName, int(detail.Mtu))
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (t *optun) Read(bufs [][]byte, sizes []int, offset int) (n int, err error) {
+	return t.dev.Read(bufs, sizes, offset)
+}
+
+func (t *optun) Write(bufs [][]byte, offset int) (int, error) {
+	return t.dev.Write(bufs, offset)
+}
+
+func setTunAddr(ifname, localAddr, remoteAddr string, wintun interface{}) error {
+	ifce, err := netlink.LinkByName(ifname)
+	if err != nil {
+		return err
+	}
+	netlink.LinkSetMTU(ifce, int(gConf.getSDWAN().Mtu))
+	netlink.LinkSetTxQLen(ifce, 1000)
+	netlink.LinkSetUp(ifce)
+
+	ln, err := netlink.ParseIPNet(localAddr)
+	if err != nil {
+		return err
+	}
+	ln.Mask = net.CIDRMask(32, 32)
+	rn, err := netlink.ParseIPNet(remoteAddr)
+	if err != nil {
+		return err
+	}
+	rn.Mask = net.CIDRMask(32, 32)
+
+	addr := &netlink.Addr{
+		IPNet: ln,
+		Peer:  rn,
+	}
+	if previousIP != "" {
+		lnDel, err := netlink.ParseIPNet(previousIP)
+		if err != nil {
+			return err
+		}
+		lnDel.Mask = net.CIDRMask(32, 32)
+
+		addrDel := &netlink.Addr{
+			IPNet: lnDel,
+			Peer:  rn,
+		}
+		netlink.AddrDel(ifce, addrDel)
+	}
+	previousIP = localAddr
+	return netlink.AddrAdd(ifce, addr)
+}
+
+func addRoute(dst, gw, ifname string) error {
+	_, networkid, err := net.ParseCIDR(dst)
+	if err != nil {
+		return err
+	}
+	ipGW := net.ParseIP(gw)
+	if ipGW == nil {
+		return fmt.Errorf("parse gateway %s failed", gw)
+	}
+	route := &netlink.Route{
+		Dst: networkid,
+		Gw:  ipGW,
+	}
+	return netlink.RouteAdd(route)
+}
+
+func delRoute(dst, gw string) error {
+	_, networkid, err := net.ParseCIDR(dst)
+	if err != nil {
+		return err
+	}
+	route := &netlink.Route{
+		Dst: networkid,
+	}
+	return netlink.RouteDel(route)
+}
+
+func delRoutesByGateway(gateway string) error {
+	cmd := exec.Command("route", "-n")
+	output, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+
+	lines := strings.Split(string(output), "\n")
+	for _, line := range lines {
+		if !strings.Contains(line, gateway) {
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) >= 8 && fields[1] == "0.0.0.0" && fields[7] == gateway {
+			delCmd := exec.Command("route", "del", "-net", fields[0], "gw", gateway)
+			err := delCmd.Run()
+			if err != nil {
+				gLog.e("Delete route %s error:%s", fields[0], err)
+				continue
+			}
+			gLog.i("Delete route ok: %s %s %s\n", fields[0], fields[1], gateway)
+		}
+	}
+	return nil
+}
--- a/core/optun_windows.go
+++ b/core/optun_windows.go
@@ -0,0 +1,146 @@
+package openp2p
+
+import (
+	"fmt"
+	"net"
+	"net/netip"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+
+	"github.com/openp2p-cn/wireguard-go/tun"
+	"golang.org/x/sys/windows"
+	"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
+)
+
+const (
+	tunIfaceName = "optun"
+	PIHeaderSize = 0
+	// sdwan
+	ReadTunBuffSize = 1024 * 64 // wintun will read date len > mtu, default 64k
+	ReadTunBuffNum  = 4
+)
+
+func (t *optun) Start(localAddr string, detail *SDWANInfo) error {
+	// check wintun.dll
+	tmpFile := filepath.Dir(os.Args[0]) + "/wintun.dll"
+	fs, err := os.Stat(tmpFile)
+	if err != nil || fs.Size() == 0 {
+		url := fmt.Sprintf("https://openp2p.cn/download/v1/latest/wintun/%s/wintun.dll", runtime.GOARCH)
+		err = downloadFile(url, "", tmpFile)
+		if err != nil {
+			os.Remove(tmpFile)
+			return err
+		}
+	}
+
+	t.tunName = tunIfaceName
+
+	uuid := &windows.GUID{
+		Data1: 0xf411e821,
+		Data2: 0xb310,
+		Data3: 0x4567,
+		Data4: [8]byte{0x80, 0x42, 0x83, 0x7e, 0xf4, 0x56, 0xce, 0x13},
+	}
+	t.dev, err = tun.CreateTUNWithRequestedGUID(t.tunName, uuid, int(detail.Mtu))
+	if err != nil { // retry
+		t.dev, err = tun.CreateTUNWithRequestedGUID(t.tunName, uuid, int(detail.Mtu))
+	}
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (t *optun) Read(bufs [][]byte, sizes []int, offset int) (n int, err error) {
+	return t.dev.Read(bufs, sizes, offset)
+}
+
+func (t *optun) Write(bufs [][]byte, offset int) (int, error) {
+	return t.dev.Write(bufs, offset)
+}
+
+func setTunAddr(ifname, localAddr, remoteAddr string, wintun interface{}) error {
+	nativeTunDevice := wintun.(*tun.NativeTun)
+	link := winipcfg.LUID(nativeTunDevice.LUID())
+	ip, err := netip.ParsePrefix(localAddr)
+	if err != nil {
+		gLog.e("ParsePrefix error:%s, luid:%d,localAddr:%s", err, nativeTunDevice.LUID(), localAddr)
+		return err
+	}
+	err = link.SetIPAddresses([]netip.Prefix{ip})
+	if err != nil {
+		gLog.e("SetIPAddresses error:%s, netip.Prefix:%+v", err, []netip.Prefix{ip})
+		return err
+	}
+	return nil
+}
+
+func addRoute(dst, gw, ifname string) error {
+	_, dstNet, err := net.ParseCIDR(dst)
+	if err != nil {
+		return err
+	}
+	i, err := net.InterfaceByName(ifname)
+	if err != nil {
+		return err
+	}
+	params := make([]string, 0)
+	params = append(params, "add")
+	params = append(params, dstNet.IP.String())
+	params = append(params, "mask")
+	params = append(params, net.IP(dstNet.Mask).String())
+	params = append(params, gw)
+	params = append(params, "if")
+	params = append(params, strconv.Itoa(i.Index))
+	// gLogger.Println(LevelINFO, "windows add route params:", params)
+	execCommand("route", true, params...)
+	return nil
+}
+
+func delRoute(dst, gw string) error {
+	_, dstNet, err := net.ParseCIDR(dst)
+	if err != nil {
+		return err
+	}
+	params := make([]string, 0)
+	params = append(params, "delete")
+	params = append(params, dstNet.IP.String())
+	params = append(params, "mask")
+	params = append(params, net.IP(dstNet.Mask).String())
+	params = append(params, gw)
+	// gLogger.Println(LevelINFO, "windows delete route params:", params)
+	execCommand("route", true, params...)
+	return nil
+}
+
+func delRoutesByGateway(gateway string) error {
+	cmd := exec.Command("route", "print", "-4")
+	output, err := cmd.Output()
+	if err != nil {
+		return err
+	}
+
+	lines := strings.Split(string(output), "\n")
+	for _, line := range lines {
+		if !strings.Contains(line, gateway) {
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) >= 5 {
+			cmd := exec.Command("route", "delete", fields[0], "mask", fields[1], gateway)
+			err := cmd.Run()
+			if err != nil {
+				gLog.e("Delete route %s error:%s", fields[0], err)
+				continue
+			}
+			gLog.i("Delete route ok: %s %s %s\n", fields[0], fields[1], gateway)
+		}
+	}
+	return nil
+}
--- a/core/overlay.go
+++ b/core/overlay.go
@@ -5,6 +5,7 @@ import (
 	"encoding/binary"
 	"errors"
 	"net"
+	"sync"
 	"time"
 )

@@ -21,17 +22,24 @@ func (e *DeadlineExceededError) Error() string   { return "i/o timeout" }
 func (e *DeadlineExceededError) Timeout() bool   { return true }
 func (e *DeadlineExceededError) Temporary() bool { return true }

+var overlayConns sync.Map // both TCP and UDP
+func closeOverlayConns(appID uint64) {
+	overlayConns.Range(func(_, i interface{}) bool {
+		oConn := i.(*overlayConn)
+		if oConn.app.id == appID {
+			oConn.Close()
+		}
+		return true
+	})
+}
+
 // implement io.Writer
 type overlayConn struct {
-	tunnel      *P2PTunnel
-	connTCP     net.Conn
-	id          uint64
-	rtid        uint64
-	running     bool
-	isClient    bool
-	appID       uint64
-	appKey      uint64
-	appKeyBytes []byte
+	app      *p2pApp
+	connTCP  net.Conn
+	id       uint64
+	running  bool
+	isClient bool
 	// for udp
 	connUDP       *net.UDPConn
 	remoteAddr    net.Addr
@@ -40,41 +48,31 @@ type overlayConn struct {
 }

 func (oConn *overlayConn) run() {
-	gLog.Printf(LvDEBUG, "%d overlayConn run start", oConn.id)
-	defer gLog.Printf(LvDEBUG, "%d overlayConn run end", oConn.id)
+	gLog.d("oid:%d overlayConn run start", oConn.id)
+	defer gLog.d("oid:%d overlayConn run end", oConn.id)
 	oConn.lastReadUDPTs = time.Now()
 	buffer := make([]byte, ReadBuffLen+PaddingSize) // 16 bytes for padding
 	reuseBuff := buffer[:ReadBuffLen]
 	encryptData := make([]byte, ReadBuffLen+PaddingSize) // 16 bytes for padding
-	tunnelHead := new(bytes.Buffer)
-	relayHead := new(bytes.Buffer)
-	binary.Write(relayHead, binary.LittleEndian, oConn.rtid)
-	binary.Write(tunnelHead, binary.LittleEndian, oConn.id)
-	for oConn.running && oConn.tunnel.isRuning() {
+	overlayHead := new(bytes.Buffer)
+
+	binary.Write(overlayHead, binary.LittleEndian, oConn.id)
+	for oConn.running && oConn.app.running {
 		readBuff, dataLen, err := oConn.Read(reuseBuff)
 		if err != nil {
 			if ne, ok := err.(net.Error); ok && ne.Timeout() {
 				continue
 			}
 			// overlay tcp connection normal close, debug log
-			gLog.Printf(LvDEBUG, "overlayConn %d read error:%s,close it", oConn.id, err)
+			gLog.d("oid:%d overlayConn read error:%s,close it", oConn.id, err)
 			break
 		}
 		payload := readBuff[:dataLen]
-		if oConn.appKey != 0 {
-			payload, _ = encryptBytes(oConn.appKeyBytes, encryptData, readBuff[:dataLen], dataLen)
-		}
-		writeBytes := append(tunnelHead.Bytes(), payload...)
-		if oConn.rtid == 0 {
-			oConn.tunnel.conn.WriteBytes(MsgP2P, MsgOverlayData, writeBytes)
-			gLog.Printf(LvDEBUG, "write overlay data to %d:%d bodylen=%d", oConn.rtid, oConn.id, len(writeBytes))
-		} else {
-			// write raley data
-			all := append(relayHead.Bytes(), encodeHeader(MsgP2P, MsgOverlayData, uint32(len(writeBytes)))...)
-			all = append(all, writeBytes...)
-			oConn.tunnel.conn.WriteBytes(MsgP2P, MsgRelayData, all)
-			gLog.Printf(LvDEBUG, "write relay data to %d:%d bodylen=%d", oConn.rtid, oConn.id, len(writeBytes))
+		if oConn.app.key != 0 {
+			payload, _ = encryptBytes(oConn.app.appKeyBytes, encryptData, readBuff[:dataLen], dataLen)
 		}
+		writeBytes := append(overlayHead.Bytes(), payload...)
+		oConn.app.WriteBytes(writeBytes)
 	}
 	if oConn.connTCP != nil {
 		oConn.connTCP.Close()
@@ -82,19 +80,10 @@ func (oConn *overlayConn) run() {
 	if oConn.connUDP != nil {
 		oConn.connUDP.Close()
 	}
-	oConn.tunnel.overlayConns.Delete(oConn.id)
+	overlayConns.Delete(oConn.id)
 	// notify peer disconnect
-	if oConn.isClient {
-		req := OverlayDisconnectReq{ID: oConn.id}
-		if oConn.rtid == 0 {
-			oConn.tunnel.conn.WriteMessage(MsgP2P, MsgOverlayDisconnectReq, &req)
-		} else {
-			// write relay data
-			msg, _ := newMessage(MsgP2P, MsgOverlayDisconnectReq, &req)
-			msgWithHead := append(relayHead.Bytes(), msg...)
-			oConn.tunnel.conn.WriteBytes(MsgP2P, MsgRelayData, msgWithHead)
-		}
-	}
+	req := OverlayDisconnectReq{ID: oConn.id}
+	oConn.app.WriteMessage(MsgP2P, MsgOverlayDisconnectReq, &req)
 }

 func (oConn *overlayConn) Read(reuseBuff []byte) (buff []byte, dataLen int, err error) {
@@ -116,7 +105,7 @@ func (oConn *overlayConn) Read(reuseBuff []byte) (buff []byte, dataLen int, err
 				err = ErrDeadlineExceeded
 			}
 		} else { // as client
-			oConn.connUDP.SetReadDeadline(time.Now().Add(5 * time.Second))
+			oConn.connUDP.SetReadDeadline(time.Now().Add(UDPReadTimeout))
 			dataLen, _, err = oConn.connUDP.ReadFrom(reuseBuff)
 			if err == nil {
 				oConn.lastReadUDPTs = time.Now()
@@ -126,7 +115,7 @@ func (oConn *overlayConn) Read(reuseBuff []byte) (buff []byte, dataLen int, err
 		return
 	}
 	if oConn.connTCP != nil {
-		oConn.connTCP.SetReadDeadline(time.Now().Add(time.Second * 5))
+		oConn.connTCP.SetReadDeadline(time.Now().Add(UDPReadTimeout))
 		dataLen, err = oConn.connTCP.Read(reuseBuff)
 		buff = reuseBuff
 	}
@@ -152,7 +141,8 @@ func (oConn *overlayConn) Write(buff []byte) (n int, err error) {
 		return
 	}
 	if oConn.connTCP != nil {
-		n, err = oConn.connTCP.Write(buff)
+		err = writeFull(oConn.connTCP, buff)
+		n = len(buff)
 	}

 	if err != nil {
@@ -165,11 +155,11 @@ func (oConn *overlayConn) Close() (err error) {
 	oConn.running = false
 	if oConn.connTCP != nil {
 		oConn.connTCP.Close()
-		oConn.connTCP = nil
+		// oConn.connTCP = nil
 	}
 	if oConn.connUDP != nil {
 		oConn.connUDP.Close()
-		oConn.connUDP = nil
+		// oConn.connUDP = nil
 	}
 	return nil
 }
--- a/core/p2papp.go
+++ b/core/p2papp.go
@@ -4,135 +4,606 @@ import (
 	"bytes"
 	"encoding/binary"
 	"fmt"
+	"math"
 	"math/rand"
 	"net"
 	"strconv"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 )

+const DefaultRtt int32 = 1000
+const MaxWindowSize = 1024 * 128               // max 32k packets in flight
+const MergeAckDelay = 40                       // 40ms linux kernel tcp
+const RetransmissonTime = MergeAckDelay + 2000 // ms
+
+type appMsgCtx struct {
+	head *openP2PHeader
+	body []byte
+	ts   time.Time
+}
+
 type p2pApp struct {
 	config      AppConfig
 	listener    net.Listener
 	listenerUDP *net.UDPConn
-	tunnel      *P2PTunnel
-	rtid        uint64 // relay tunnelID
-	relayNode   string
-	relayMode   string
-	hbTime      time.Time
-	hbMtx       sync.Mutex
-	running     bool
-	id          uint64
-	key         uint64
-	wg          sync.WaitGroup
+
+	tunnelMtx sync.Mutex
+	iptree    *IPTree // for whitelist
+
+	hbMtx         sync.Mutex
+	running       bool
+	id            uint64
+	key           uint64 // aes
+	appKeyBytes   []byte // pre-calc
+	wg            sync.WaitGroup
+	msgChan       chan appMsgCtx
+	once          sync.Once
+	tunnelNum     int
+	relayIdxStart int
+	allTunnels    []*P2PTunnel
+	retryNum      []int
+	retryTime     []time.Time
+	nextRetryTime []time.Time
+	rtt           []atomic.Int32
+	relayHead     []*bytes.Buffer
+	rtid          []uint64 // peer relay tunnelID
+	relayNode     []string
+	relayMode     []string // public/private
+	hbTime        []time.Time
+	whbTime       []time.Time     // calc each tunnel rtt by hb
+	unAckSeqStart []atomic.Uint64 // record unack packet for retransmission
+	unAckSeqEnd   []atomic.Uint64
+
+	errMsg      string
+	connectTime time.Time
+	// asyncWriteChan chan []byte
+	maxWindowSize uint64
+
+	unAckTs     []atomic.Int64
+	writeTs     []atomic.Int64
+	readCacheTs atomic.Int64
+
+	seqW         uint64
+	seqR         uint64
+	seqRMtx      sync.Mutex
+	handleAckMtx sync.Mutex
+	mergeAckSeq  []atomic.Uint64
+	mergeAckTs   []atomic.Int64
+
+	preDirectSuccessIP string
 }

-func (app *p2pApp) isActive() bool {
-	if app.tunnel == nil {
+
+func (app *p2pApp) Tunnel(idx int) *P2PTunnel {
+	if idx > app.tunnelNum-1 {
+		return nil
+	}
+	app.tunnelMtx.Lock()
+	defer app.tunnelMtx.Unlock()
+	return app.allTunnels[idx]
+}
+
+func (app *p2pApp) SetTunnel(t *P2PTunnel, idx int) {
+	app.tunnelMtx.Lock()
+	defer app.tunnelMtx.Unlock()
+	app.allTunnels[idx] = t
+
+	app.rtt[idx].Store(DefaultRtt)
+	app.unAckTs[idx].Store(0)
+	app.writeTs[idx].Store(0)
+}
+
+func (app *p2pApp) ConnectTime() time.Time {
+	if app.allTunnels[0] != nil {
+		return app.config.connectTime
+	}
+	return app.connectTime
+}
+
+func (app *p2pApp) RetryTime() time.Time {
+	if app.allTunnels[0] != nil {
+		return app.config.retryTime
+	}
+	return app.retryTime[app.relayIdxStart]
+}
+
+func (app *p2pApp) Init(tunnelNum int) {
+	app.tunnelNum = tunnelNum
+	app.allTunnels = make([]*P2PTunnel, tunnelNum)
+	app.retryNum = make([]int, tunnelNum)
+	app.retryTime = make([]time.Time, tunnelNum)
+	app.nextRetryTime = make([]time.Time, tunnelNum)
+	app.rtt = make([]atomic.Int32, tunnelNum)
+	app.relayHead = make([]*bytes.Buffer, tunnelNum)
+	app.rtid = make([]uint64, tunnelNum)
+	app.relayNode = make([]string, tunnelNum)
+	app.relayMode = make([]string, tunnelNum)
+	app.hbTime = make([]time.Time, tunnelNum)
+	app.whbTime = make([]time.Time, tunnelNum)
+	app.unAckSeqEnd = make([]atomic.Uint64, tunnelNum)
+	app.unAckTs = make([]atomic.Int64, tunnelNum)
+	app.writeTs = make([]atomic.Int64, tunnelNum)
+	app.unAckSeqStart = make([]atomic.Uint64, tunnelNum)
+	app.mergeAckSeq = make([]atomic.Uint64, tunnelNum)
+	app.mergeAckTs = make([]atomic.Int64, tunnelNum)
+
+	app.msgChan = make(chan appMsgCtx, 50)
+	for i := 0; i < tunnelNum; i++ {
+		app.hbTime[i] = time.Now()
+	}
+	app.relayIdxStart = app.tunnelNum - 2
+	if app.relayIdxStart == 0 {
+		app.relayIdxStart = 1 // at least one direct tunnel
+	}
+	// app.unAckSeqStart.Store(0)
+	// app.mergeAckTs.Store(0)
+	// for i := 0; i < relayNum; i++ {
+	// 	app.mergeAckTsRelay[i].Store(0)
+	// }
+}
+
+func (app *p2pApp) Start(isClient bool) {
+	app.maxWindowSize = MaxWindowSize
+
+	app.PreCalcKeyBytes()
+	if isClient {
+		go app.daemonP2PTunnel()
+	}
+
+}
+
+func (app *p2pApp) daemonP2PTunnel() error {
+	for app.running {
+
+		for i := 0; i < app.relayIdxStart; i++ {
+			app.daemonDirectTunnel(i)
+			time.Sleep(time.Second)
+		}
+		for i := app.relayIdxStart; i < app.tunnelNum; i++ {
+			if i > app.relayIdxStart {
+				app.nextRetryTime[i] = time.Now().Add(time.Second * 180) // the second relay tunnel wait 3 mins
+			}
+			app.daemonRelayTunnel(i)
+			time.Sleep(time.Second)
+		}
+		time.Sleep(time.Second * 3)
+	}
+	return nil
+}
+
+func (app *p2pApp) daemonDirectTunnel(idx int) error {
+	if !GNetwork.online {
+		return nil
+	}
+	if app.config.ForceRelay == 1 && app.config.RelayNode != app.config.PeerNode {
+		return nil
+	}
+	// TODO: multi direct tunnel support symmetric NAT traversal later
+	if idx > 0 && gConf.Network.hasIPv4 == 0 && gConf.Network.hasUPNPorNATPMP == 0 && app.config.hasIPv4 == 0 && app.config.hasUPNPorNATPMP == 0 && (gConf.Network.natType == NATSymmetric || app.config.peerNatType == NATSymmetric) {
+		return nil
+	}
+	if app.Tunnel(idx) != nil && app.Tunnel(idx).isActive() {
+		return nil
+	}
+	if app.config.nextRetryTime.After(time.Now()) || app.config.Enabled == 0 {
+		return nil
+	}
+	if time.Now().Add(-time.Minute * 15).After(app.config.retryTime) { // run normally 15min, reset retrynum
+		app.retryNum[idx] = 1
+	}
+	if app.retryNum[idx] > 0 { // first time not show reconnect log
+		gLog.i("appid:%d checkDirectTunnel detect peer %s disconnect, reconnecting the %d times...", app.id, app.config.LogPeerNode(), app.retryNum[idx])
+	}
+	app.retryNum[idx]++
+	app.config.retryTime = time.Now()
+
+	app.config.connectTime = time.Now()
+	err := app.buildDirectTunnel(idx)
+	if err != nil {
+		app.config.errMsg = err.Error()
+		if err == ErrPeerOffline && app.retryNum[idx] > 2 { // stop retry, waiting for online
+			app.retryNum[idx] = retryLimit
+			gLog.i("appid:%d checkDirectTunnel %s offline, it will auto reconnect when peer node online", app.id, app.config.LogPeerNode())
+		}
+		if err == ErrBuildTunnelBusy {
+			app.retryNum[idx]--
+		}
+	}
+	interval := calcRetryTimeRelay(float64(app.retryNum[idx]))
+	if app.preDirectSuccessIP == app.config.peerIP {
+		interval = math.Min(interval, 1800) // if peerIP has been direct link succeed, retry 30min max
+	}
+	app.config.nextRetryTime = time.Now().Add(time.Duration(interval) * time.Second)
+	if app.Tunnel(idx) != nil {
+		app.preDirectSuccessIP = app.config.peerIP
+		app.once.Do(func() {
+			go app.listen()
+			// memapp also need
+			for i := app.relayIdxStart; i < app.tunnelNum; i++ {
+				go app.relayHeartbeatLoop(i)
+			}
+
+		})
+	}
+	return nil
+}
+func (app *p2pApp) buildDirectTunnel(idx int) error {
+	relayNode := ""
+	peerNatType := NATUnknown
+	peerIP := ""
+	errMsg := ""
+	var t *P2PTunnel
+	var err error
+	pn := GNetwork
+	// TODO: optimize requestPeerInfo call frequency
+	initErr := pn.requestPeerInfo(&app.config)
+	if initErr != nil {
+		gLog.w("appid:%d buildDirectTunnel %s requestPeerInfo error:%s", app.id, app.config.LogPeerNode(), initErr)
+		return initErr
+	}
+	t, err = pn.addDirectTunnel(app.config, 0, app.Tunnel(idx^1))
+	if t != nil {
+		peerNatType = t.config.peerNatType
+		peerIP = t.config.peerIP
+	}
+	if err != nil {
+		errMsg = err.Error()
+	}
+	req := ReportConnect{
+		Error:          errMsg,
+		Protocol:       app.config.Protocol,
+		SrcPort:        app.config.SrcPort,
+		NatType:        gConf.Network.natType,
+		PeerNode:       app.config.PeerNode,
+		DstPort:        app.config.DstPort,
+		DstHost:        app.config.DstHost,
+		PeerNatType:    peerNatType,
+		PeerIP:         peerIP,
+		ShareBandwidth: gConf.Network.ShareBandwidth,
+		RelayNode:      relayNode,
+		Version:        OpenP2PVersion,
+	}
+	pn.write(MsgReport, MsgReportConnect, &req)
+	if err != nil {
+		return err
+	}
+	// if rtid != 0 || t.conn.Protocol() == "tcp" {
+	// sync appkey
+	if t == nil {
+		return err
+	}
+	syncKeyReq := APPKeySync{
+		AppID:  app.id,
+		AppKey: app.key,
+	}
+	gLog.d("appid:%d buildDirectTunnel sync appkey to %s", app.id, app.config.LogPeerNode())
+	pn.push(app.config.PeerNode, MsgPushAPPKey, &syncKeyReq)
+	app.SetTunnel(t, idx)
+
+	// if memapp notify peer addmemapp
+	// if app.config.SrcPort == 0 {
+	req2 := ServerSideSaveMemApp{From: gConf.Network.Node, Node: gConf.Network.Node, TunnelID: t.id, RelayTunnelID: 0, RelayIndex: uint32(idx), TunnelNum: uint32(app.tunnelNum), AppID: app.id, AppKey: app.key, SrcPort: uint32(app.config.SrcPort)}
+	pn.push(app.config.PeerNode, MsgPushServerSideSaveMemApp, &req2)
+	gLog.d("appid:%d buildDirectTunnel push %s ServerSideSaveMemApp: %s", app.id, app.config.LogPeerNode(), prettyJson(req2))
+
+	// }
+	gLog.d("appid:%d buildDirectTunnel ok. %s use tid %d", app.id, app.config.AppName, t.id)
+	return nil
+}
+
+func (app *p2pApp) daemonRelayTunnel(idx int) error {
+	if !GNetwork.online {
+		return nil
+	}
+
+	if app.Tunnel(0) != nil && app.relayIdxStart >= 2 { // multi direct tunnel no relay
+		return nil
+	}
+	// if app.config.ForceRelay == 1 && (gConf.sdwan.CentralNode == app.config.PeerNode && compareVersion(app.config.peerVersion, SupportDualTunnelVersion) < 0) {
+	if app.config.SrcPort == 0 && (gConf.sdwan.CentralNode == app.config.PeerNode || gConf.sdwan.CentralNode == gConf.Network.Node) { // memapp central node not build relay tunnel
+		return nil
+	}
+	if gConf.sdwan.CentralNode != "" && idx != app.relayIdxStart { // if central node exist only need one relayTunnel
+		return nil
+	}
+	app.hbMtx.Lock()
+	if app.Tunnel(idx) != nil && time.Now().Before(app.hbTime[idx].Add(TunnelHeartbeatTime*2)) { // must check app.hbtime instead of relayTunnel
+		app.hbMtx.Unlock()
+		return nil
+	}
+	app.hbMtx.Unlock()
+	if app.nextRetryTime[idx].After(time.Now()) || app.config.Enabled == 0 {
+		return nil
+	}
+	if time.Now().Add(-time.Minute * 15).After(app.retryTime[idx]) { // run normally 15min, reset retrynum
+		app.retryNum[idx] = 1
+	}
+	if app.retryNum[idx] > 0 { // first time not show reconnect log
+		gLog.i("appid:%d checkRelayTunnel detect peer %s relay disconnect, reconnecting the %d times...", app.id, app.config.LogPeerNode(), app.retryNum[idx])
+	}
+	app.SetTunnel(nil, idx) // reset relayTunnel
+	app.retryNum[idx]++
+	app.retryTime[idx] = time.Now()
+	app.connectTime = time.Now()
+	err := app.buildRelayTunnel(idx)
+	if err != nil {
+		app.errMsg = err.Error()
+		if err == ErrPeerOffline && app.retryNum[idx] > 2 { // stop retry, waiting for online
+			app.retryNum[idx] = retryLimit
+			gLog.i("appid:%d checkRelayTunnel %s offline, it will auto reconnect when peer node online", app.id, app.config.LogPeerNode())
+		}
+	}
+	interval := calcRetryTimeRelay(float64(app.retryNum[idx]))
+	app.nextRetryTime[idx] = time.Now().Add(time.Duration(interval) * time.Second)
+	if app.Tunnel(idx) != nil {
+		app.once.Do(func() {
+			go app.listen()
+			// memapp also need
+			for i := 1; i < app.tunnelNum; i++ {
+				go app.relayHeartbeatLoop(i)
+			}
+		})
+	}
+	return nil
+}
+
+func (app *p2pApp) buildRelayTunnel(idx int) error {
+	var rtid uint64
+	relayNode := ""
+	relayMode := ""
+	peerNatType := NATUnknown
+	peerIP := ""
+	errMsg := ""
+	var t *P2PTunnel
+	var err error
+	pn := GNetwork
+	config := app.config
+	initErr := pn.requestPeerInfo(&config)
+	if initErr != nil {
+		gLog.w("appid:%d buildRelayTunnel %s init error:%s", app.id, config.LogPeerNode(), initErr)
+		return initErr
+	}
+	ExcludeNodes := ""
+	theOtherTunnelIdx := app.relayIdxStart
+	if idx == app.relayIdxStart {
+		theOtherTunnelIdx = app.relayIdxStart + 1
+	}
+	if app.tunnelNum > 2 && app.allTunnels[theOtherTunnelIdx] != nil {
+		ExcludeNodes = app.allTunnels[theOtherTunnelIdx].config.PeerNode
+	}
+	t, rtid, relayMode, err = pn.addRelayTunnel(config, ExcludeNodes)
+	if t != nil {
+		relayNode = t.config.PeerNode
+	}
+
+	if err != nil {
+		errMsg = err.Error()
+	}
+	if app.Tunnel(0) == nil {
+		req := ReportConnect{
+			Error:          errMsg,
+			Protocol:       config.Protocol,
+			SrcPort:        config.SrcPort,
+			NatType:        gConf.Network.natType,
+			PeerNode:       config.PeerNode,
+			DstPort:        config.DstPort,
+			DstHost:        config.DstHost,
+			PeerNatType:    peerNatType,
+			PeerIP:         peerIP,
+			ShareBandwidth: gConf.Network.ShareBandwidth,
+			RelayNode:      relayNode,
+			Version:        OpenP2PVersion,
+		}
+		pn.write(MsgReport, MsgReportConnect, &req)
+	}
+	if err != nil || t == nil {
+		return err
+	}
+
+	// if rtid != 0 || t.conn.Protocol() == "tcp" {
+	// sync appkey
+	syncKeyReq := APPKeySync{
+		AppID:  app.id,
+		AppKey: app.key,
+	}
+	gLog.d("appid:%d buildRelayTunnel sync appkey relay to %s", app.id, config.LogPeerNode())
+	pn.push(config.PeerNode, MsgPushAPPKey, &syncKeyReq)
+	app.SetRelayTunnelID(rtid, idx)
+	app.SetTunnel(t, idx)
+	app.relayNode[idx] = relayNode
+	app.relayMode[idx] = relayMode
+	app.hbTime[idx] = time.Now()
+
+	// if memapp notify peer addmemapp
+	// if config.SrcPort == 0 {
+	req2 := ServerSideSaveMemApp{From: gConf.Network.Node, Node: relayNode, TunnelID: rtid, RelayTunnelID: t.id, AppID: app.id, AppKey: app.key, RelayMode: relayMode, RelayIndex: uint32(idx), TunnelNum: uint32(app.tunnelNum), SrcPort: uint32(app.config.SrcPort)}
+	pn.push(config.PeerNode, MsgPushServerSideSaveMemApp, &req2)
+	gLog.d("appid:%d buildRelayTunnel push %s relay ServerSideSaveMemApp: %s", app.id, config.LogPeerNode(), prettyJson(req2))
+	// }
+	gLog.d("appid:%d buildRelayTunnel %s use tunnel %d", app.id, app.config.AppName, t.id)
+	return nil
+}
+
+func (app *p2pApp) buildOfficialTunnel() error {
+	return nil
+}
+
+// cache relayHead, refresh when rtid change
+func (app *p2pApp) RelayHead(idx int) *bytes.Buffer {
+	if app.relayHead[idx] == nil {
+		app.relayHead[idx] = new(bytes.Buffer)
+		binary.Write(app.relayHead[idx], binary.LittleEndian, app.rtid[idx])
+	}
+	return app.relayHead[idx]
+}
+
+func (app *p2pApp) SetRelayTunnelID(rtid uint64, idx int) {
+	app.rtid[idx] = rtid
+	app.relayHead[idx] = new(bytes.Buffer)
+	binary.Write(app.relayHead[idx], binary.LittleEndian, app.rtid[idx])
+}
+
+func (app *p2pApp) IsActive() bool {
+	if t, _ := app.AvailableTunnel(); t == nil {
+		// gLog.d("isActive app.tunnel==nil")
 		return false
 	}
-	if app.rtid == 0 { // direct mode app heartbeat equals to tunnel heartbeat
-		return app.tunnel.isActive()
+	if app.Tunnel(0) != nil { // direct mode app heartbeat equals to tunnel heartbeat
+		return app.Tunnel(0).isActive()
 	}
 	// relay mode calc app heartbeat
 	app.hbMtx.Lock()
 	defer app.hbMtx.Unlock()
-	return time.Now().Before(app.hbTime.Add(TunnelIdleTimeout))
+	if app.Tunnel(1) != nil {
+		return time.Now().Before(app.hbTime[1].Add(TunnelHeartbeatTime * 2))
+	}
+	res := time.Now().Before(app.hbTime[2].Add(TunnelHeartbeatTime * 2))
+	// if !res {
+	// 	gLog.d("%d app isActive false. peer=%s", app.id, app.config.PeerNode)
+	// }
+	return res
 }

-func (app *p2pApp) updateHeartbeat() {
+// only for relay tunnel heartbeat update
+func (app *p2pApp) UpdateHeartbeat(rtid uint64) {
 	app.hbMtx.Lock()
 	defer app.hbMtx.Unlock()
-	app.hbTime = time.Now()
+	for i := app.relayIdxStart; i < app.tunnelNum; i++ {
+		if rtid == app.rtid[i] || (app.Tunnel(i) != nil && app.Tunnel(i).id == rtid) {
+			app.hbTime[i] = time.Now()
+			rtt := int32(time.Since(app.whbTime[i]) / time.Millisecond)
+			preRtt := app.rtt[i].Load()
+			if preRtt != DefaultRtt {
+				rtt = int32(float64(preRtt)*(1-ma20) + float64(rtt)*ma20)
+			}
+			app.rtt[i].Store(rtt)
+			gLog.dev("appid:%d relay heartbeat %d store rtt %d", app.id, i, rtt)
+			return
+		}
+	}
+
+}
+
+func (app *p2pApp) UpdateRelayHeartbeatTs(rtid uint64) {
+	app.hbMtx.Lock()
+	defer app.hbMtx.Unlock()
+	for i := app.relayIdxStart; i < app.tunnelNum; i++ {
+		if rtid == app.rtid[i] || (app.Tunnel(i) != nil && app.Tunnel(i).id == rtid) {
+			app.whbTime[i] = time.Now()
+			return
+		}
+	}
+	// relayIdx := 1
+	// if app.tunnelNum > 2 && rtid == app.rtid[2] || (app.Tunnel(2) != nil && app.Tunnel(2).id == rtid) { // ack return rtid!=
+	// 	relayIdx = 2
+	// }
+	// app.whbTime[relayIdx] = time.Now() // one side did not write relay hb, so write whbtime in this.
 }

 func (app *p2pApp) listenTCP() error {
-	gLog.Printf(LvDEBUG, "tcp accept on port %d start", app.config.SrcPort)
-	defer gLog.Printf(LvDEBUG, "tcp accept on port %d end", app.config.SrcPort)
+	gLog.d("appid:%d tcp accept on port %d start", app.id, app.config.SrcPort)
+	defer gLog.d("appid:%d tcp accept on port %d end", app.id, app.config.SrcPort)
 	var err error
-	app.listener, err = net.Listen("tcp", fmt.Sprintf("0.0.0.0:%d", app.config.SrcPort)) // support tcp4 and tcp6
+	listenAddr := ""
+	if IsLocalhost(app.config.Whitelist) { // not expose port
+		listenAddr = "127.0.0.1"
+	}
+	app.listener, err = net.Listen("tcp", fmt.Sprintf("%s:%d", listenAddr, app.config.SrcPort))
 	if err != nil {
-		gLog.Printf(LvERROR, "listen error:%s", err)
+		gLog.e("appid:%d listen tcp error:%s", app.id, err)
 		return err
 	}
+	defer app.listener.Close()
 	for app.running {
 		conn, err := app.listener.Accept()
 		if err != nil {
 			if app.running {
-				gLog.Printf(LvERROR, "%d accept error:%s", app.id, err)
+				gLog.e("appid:%d  accept error:%s", app.id, err)
 			}
 			break
 		}
+		t, tidx := app.AvailableTunnel()
+		if t == nil {
+			gLog.d("appid:%d srcPort=%d, app.Tunnel()==nil, not ready", app.id, app.config.SrcPort)
+			time.Sleep(time.Second)
+			continue
+		}
+		// check white list
+		if app.config.Whitelist != "" {
+			remoteIP := conn.RemoteAddr().(*net.TCPAddr).IP.String()
+			if !app.iptree.Contains(remoteIP) && !IsLocalhost(remoteIP) {
+				conn.Close()
+				gLog.e("appid:%d %s not in whitelist, access denied", app.id, remoteIP)
+				continue
+			}
+		}
 		oConn := overlayConn{
-			tunnel:   app.tunnel,
+			app:      app,
 			connTCP:  conn,
 			id:       rand.Uint64(),
 			isClient: true,
-			rtid:     app.rtid,
-			appID:    app.id,
-			appKey:   app.key,
 			running:  true,
 		}
-		// pre-calc key bytes for encrypt
-		if oConn.appKey != 0 {
-			encryptKey := make([]byte, AESKeySize)
-			binary.LittleEndian.PutUint64(encryptKey, oConn.appKey)
-			binary.LittleEndian.PutUint64(encryptKey[8:], oConn.appKey)
-			oConn.appKeyBytes = encryptKey
-		}
-		app.tunnel.overlayConns.Store(oConn.id, &oConn)
-		gLog.Printf(LvDEBUG, "Accept TCP overlayID:%d", oConn.id)
+
+		overlayConns.Store(oConn.id, &oConn)
+		gLog.d("appid:%d Accept TCP overlayID:%d, %s", app.id, oConn.id, oConn.connTCP.RemoteAddr())
 		// tell peer connect
 		req := OverlayConnectReq{ID: oConn.id,
-			Token:    app.tunnel.pn.config.Token,
+			Token:    gConf.Network.Token,
 			DstIP:    app.config.DstHost,
 			DstPort:  app.config.DstPort,
 			Protocol: app.config.Protocol,
 			AppID:    app.id,
 		}
-		if app.rtid == 0 {
-			app.tunnel.conn.WriteMessage(MsgP2P, MsgOverlayConnectReq, &req)
-		} else {
-			req.RelayTunnelID = app.tunnel.id
-			relayHead := new(bytes.Buffer)
-			binary.Write(relayHead, binary.LittleEndian, app.rtid)
-			msg, _ := newMessage(MsgP2P, MsgOverlayConnectReq, &req)
-			msgWithHead := append(relayHead.Bytes(), msg...)
-			app.tunnel.conn.WriteBytes(MsgP2P, MsgRelayData, msgWithHead)
+
+		if tidx != 0 {
+			req.RelayTunnelID = t.id
+		}
+		app.WriteMessage(MsgP2P, MsgOverlayConnectReq, &req)
+		head, _ := app.ReadMessage(MsgP2P, MsgOverlayConnectRsp, time.Second*3)
+		if head == nil {
+			gLog.w("appid:%d read MsgOverlayConnectRsp error", app.id)
 		}
-		// TODO: wait OverlayConnectRsp instead of sleep
-		time.Sleep(time.Second) // waiting remote node connection ok
 		go oConn.run()
 	}
 	return nil
 }

 func (app *p2pApp) listenUDP() error {
-	gLog.Printf(LvDEBUG, "udp accept on port %d start", app.config.SrcPort)
-	defer gLog.Printf(LvDEBUG, "udp accept on port %d end", app.config.SrcPort)
+	gLog.d("appid:%d udp accept on port %d start", app.id, app.config.SrcPort)
+	defer gLog.d("appid:%d udp accept on port %d end", app.id, app.config.SrcPort)
 	var err error
 	app.listenerUDP, err = net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4zero, Port: app.config.SrcPort})
 	if err != nil {
-		gLog.Printf(LvERROR, "listen error:%s", err)
+		gLog.e("appid:%d listen udp error:%s", app.id, err)
 		return err
 	}
+	defer app.listenerUDP.Close()
 	buffer := make([]byte, 64*1024+PaddingSize)
 	udpID := make([]byte, 8)
-	for {
-		app.listenerUDP.SetReadDeadline(time.Now().Add(time.Second * 10))
+	for app.running {
+		app.listenerUDP.SetReadDeadline(time.Now().Add(UDPReadTimeout))
 		len, remoteAddr, err := app.listenerUDP.ReadFrom(buffer)
 		if err != nil {
 			if ne, ok := err.(net.Error); ok && ne.Timeout() {
 				continue
 			} else {
-				gLog.Printf(LvERROR, "udp read failed:%s", err)
+				gLog.e("appid:%d udp read failed:%s", app.id, err)
 				break
 			}
 		} else {
+			t, tidx := app.AvailableTunnel()
+			if t == nil {
+				gLog.d("appid:%d srcPort=%d, app.Tunnel()==nil, not ready", app.id, app.config.SrcPort)
+				time.Sleep(time.Second)
+				continue
+			}
 			dupData := bytes.Buffer{} // should uses memory pool
 			dupData.Write(buffer[:len+PaddingSize])
-			// load from app.tunnel.overlayConns by remoteAddr error, new udp connection
+			// load from app.overlayConns by remoteAddr error, new udp connection
 			remoteIP := strings.Split(remoteAddr.String(), ":")[0]
 			port, _ := strconv.Atoi(strings.Split(remoteAddr.String(), ":")[1])
 			a := net.ParseIP(remoteIP)
@@ -143,54 +614,40 @@ func (app *p2pApp) listenUDP() error {
 			udpID[4] = byte(port)
 			udpID[5] = byte(port >> 8)
 			id := binary.LittleEndian.Uint64(udpID) // convert remoteIP:port to uint64
-			s, ok := app.tunnel.overlayConns.Load(id)
+			s, ok := overlayConns.Load(id)
 			if !ok {
 				oConn := overlayConn{
-					tunnel:     app.tunnel,
+					app:        app,
 					connUDP:    app.listenerUDP,
 					remoteAddr: remoteAddr,
 					udpData:    make(chan []byte, 1000),
 					id:         id,
 					isClient:   true,
-					rtid:       app.rtid,
-					appID:      app.id,
-					appKey:     app.key,
 					running:    true,
 				}
-				// calc key bytes for encrypt
-				if oConn.appKey != 0 {
-					encryptKey := make([]byte, AESKeySize)
-					binary.LittleEndian.PutUint64(encryptKey, oConn.appKey)
-					binary.LittleEndian.PutUint64(encryptKey[8:], oConn.appKey)
-					oConn.appKeyBytes = encryptKey
-				}
-				app.tunnel.overlayConns.Store(oConn.id, &oConn)
-				gLog.Printf(LvDEBUG, "Accept UDP overlayID:%d", oConn.id)
+				overlayConns.Store(oConn.id, &oConn)
+				gLog.d("appid:%d Accept UDP overlayID:%d", app.id, oConn.id)
 				// tell peer connect
 				req := OverlayConnectReq{ID: oConn.id,
-					Token:    app.tunnel.pn.config.Token,
+					Token:    gConf.Network.Token,
 					DstIP:    app.config.DstHost,
 					DstPort:  app.config.DstPort,
 					Protocol: app.config.Protocol,
 					AppID:    app.id,
 				}
-				if app.rtid == 0 {
-					app.tunnel.conn.WriteMessage(MsgP2P, MsgOverlayConnectReq, &req)
-				} else {
-					req.RelayTunnelID = app.tunnel.id
-					relayHead := new(bytes.Buffer)
-					binary.Write(relayHead, binary.LittleEndian, app.rtid)
-					msg, _ := newMessage(MsgP2P, MsgOverlayConnectReq, &req)
-					msgWithHead := append(relayHead.Bytes(), msg...)
-					app.tunnel.conn.WriteBytes(MsgP2P, MsgRelayData, msgWithHead)
+				if tidx != 0 {
+					req.RelayTunnelID = t.id
+				}
+				app.WriteMessage(MsgP2P, MsgOverlayConnectReq, &req)
+				head, _ := app.ReadMessage(MsgP2P, MsgOverlayConnectRsp, time.Second*3)
+				if head == nil {
+					gLog.w("appid:%d read MsgOverlayConnectRsp error", app.id)
 				}
-				// TODO: wait OverlayConnectRsp instead of sleep
-				time.Sleep(time.Second) // waiting remote node connection ok
 				go oConn.run()
 				oConn.udpData <- dupData.Bytes()
 			}

-			// load from app.tunnel.overlayConns by remoteAddr ok, write relay data
+			// load from overlayConns by remoteAddr ok, write relay data
 			overlayConn, ok := s.(*overlayConn)
 			if !ok {
 				continue
@@ -202,15 +659,14 @@ func (app *p2pApp) listenUDP() error {
 }

 func (app *p2pApp) listen() error {
-	gLog.Printf(LvINFO, "LISTEN ON PORT %s:%d START", app.config.Protocol, app.config.SrcPort)
-	defer gLog.Printf(LvINFO, "LISTEN ON PORT %s:%d END", app.config.Protocol, app.config.SrcPort)
+	if app.config.SrcPort == 0 {
+		return nil
+	}
+	gLog.i("appid:%d LISTEN ON PORT %s:%d START", app.id, app.config.Protocol, app.config.SrcPort)
+	defer gLog.i("appid:%d LISTEN ON PORT %s:%d END", app.id, app.config.Protocol, app.config.SrcPort)
 	app.wg.Add(1)
 	defer app.wg.Done()
-	app.running = true
-	if app.rtid != 0 {
-		go app.relayHeartbeatLoop()
-	}
-	for app.tunnel.isRuning() {
+	for app.running {
 		if app.config.Protocol == "udp" {
 			app.listenUDP()
 		} else {
@@ -224,7 +680,7 @@ func (app *p2pApp) listen() error {
 	return nil
 }

-func (app *p2pApp) close() {
+func (app *p2pApp) Close() {
 	app.running = false
 	if app.listener != nil {
 		app.listener.Close()
@@ -232,26 +688,193 @@ func (app *p2pApp) close() {
 	if app.listenerUDP != nil {
 		app.listenerUDP.Close()
 	}
-	if app.tunnel != nil {
-		app.tunnel.closeOverlayConns(app.id)
-	}
+	closeOverlayConns(app.id)
 	app.wg.Wait()
 }

 // TODO: many relay app on the same P2PTunnel will send a lot of relay heartbeat
-func (app *p2pApp) relayHeartbeatLoop() {
+func (app *p2pApp) relayHeartbeatLoop(idx int) {
 	app.wg.Add(1)
 	defer app.wg.Done()
-	gLog.Printf(LvDEBUG, "relayHeartbeat to %d start", app.rtid)
-	defer gLog.Printf(LvDEBUG, "relayHeartbeat to %d end", app.rtid)
-	relayHead := new(bytes.Buffer)
-	binary.Write(relayHead, binary.LittleEndian, app.rtid)
-	req := RelayHeartbeat{RelayTunnelID: app.tunnel.id,
-		AppID: app.id}
-	msg, _ := newMessage(MsgP2P, MsgRelayHeartbeat, &req)
-	msgWithHead := append(relayHead.Bytes(), msg...)
-	for app.tunnel.isRuning() && app.running {
-		app.tunnel.conn.WriteBytes(MsgP2P, MsgRelayData, msgWithHead)
+	gLog.d("appid:%d %s relayHeartbeat to rtid:%d start", app.id, app.config.LogPeerNode(), app.rtid[idx])
+	defer gLog.d("appid:%d %s relayHeartbeat to rtid%d end", app.id, app.config.LogPeerNode(), app.rtid[idx])
+
+	for app.running {
+		if app.Tunnel(idx) == nil || !app.Tunnel(idx).isRuning() {
+			time.Sleep(TunnelHeartbeatTime)
+			continue
+		}
+		req := RelayHeartbeat{From: gConf.Network.Node, RelayTunnelID: app.Tunnel(idx).id, RelayTunnelID2: app.rtid[idx],
+			AppID: app.id}
+		err := app.Tunnel(idx).WriteMessage(app.rtid[idx], MsgP2P, MsgRelayHeartbeat, &req)
+		if err != nil {
+			gLog.e("appid:%d %s rtid:%d write relay tunnel heartbeat error %s", app.id, app.config.LogPeerNode(), app.rtid[idx], err)
+			app.SetTunnel(nil, idx)
+			continue
+		}
+		app.whbTime[idx] = time.Now()
+		// TODO: debug relay heartbeat
+		gLog.dev("appid:%d %s rtid:%d write relay tunnel heartbeat ok", app.id, app.config.LogPeerNode(), app.rtid[idx])
 		time.Sleep(TunnelHeartbeatTime)
 	}
 }
+
+func (app *p2pApp) WriteMessage(mainType uint16, subType uint16, req interface{}) error {
+	t, tidx := app.AvailableTunnel()
+	if t == nil {
+		return ErrAppWithoutTunnel
+	}
+	return t.WriteMessage(app.rtid[tidx], mainType, subType, req)
+}
+
+func (app *p2pApp) WriteMessageWithAppID(mainType uint16, subType uint16, req interface{}) error {
+	t, tidx := app.AvailableTunnel()
+	if t == nil {
+		return ErrAppWithoutTunnel
+	}
+	appID := app.id
+	if app.config.SrcPort == 0 {
+		appID = NodeNameToID(app.config.PeerNode)
+	}
+	return t.WriteMessageWithAppID(appID, app.rtid[tidx], mainType, subType, req)
+}
+
+func (app *p2pApp) WriteBytes(data []byte) error {
+	t, tidx := app.AvailableTunnel()
+	if t == nil {
+		return ErrAppWithoutTunnel
+	}
+	if tidx < app.relayIdxStart { // direct mode
+		return t.conn.WriteBytes(MsgP2P, MsgOverlayData, data)
+	}
+	all := append(app.relayHead[tidx].Bytes(), encodeHeader(MsgP2P, MsgOverlayData, uint32(len(data)))...)
+	all = append(all, data...)
+	t.conn.WriteBytes(MsgP2P, MsgRelayData, all)
+
+	return nil
+}
+
+func (app *p2pApp) PreCalcKeyBytes() {
+	// pre-calc key bytes for encrypt
+	if app.key != 0 {
+		encryptKey := make([]byte, AESKeySize)
+		binary.LittleEndian.PutUint64(encryptKey, app.key)
+		binary.LittleEndian.PutUint64(encryptKey[8:], app.key)
+		app.appKeyBytes = encryptKey
+	}
+}
+
+func (app *p2pApp) WriteNodeDataMP(IPPacket []byte) (err error) {
+	t, tidx := app.fastestTunnel()
+	if t == nil {
+		return ErrAppWithoutTunnel
+	}
+	dataWithSeq := new(bytes.Buffer)
+	binary.Write(dataWithSeq, binary.LittleEndian, gConf.nodeID())
+	binary.Write(dataWithSeq, binary.LittleEndian, app.seqW)
+	dataWithSeq.Write(IPPacket)
+	// gLog.d("DEBUG writeTs=%d, unAckSeqStart=%d", wu.writeTs.UnixMilli(), app.unAckSeqStart[tidx].Load())
+
+	if tidx < app.relayIdxStart { // direct mode
+		t.asyncWriteNodeData(gConf.nodeID(), app.seqW, IPPacket, nil)
+		gLog.dev("appid:%d asyncWriteDirect IPPacket len=%d", app.id, len(IPPacket))
+	} else {
+		t.asyncWriteNodeData(gConf.nodeID(), app.seqW, IPPacket, app.RelayHead(tidx).Bytes())
+		gLog.dev("appid:%d asyncWriteRelay%d IPPacket len=%d", app.id, tidx, len(IPPacket))
+	}
+	app.seqW++
+	return err
+}
+
+func (app *p2pApp) handleNodeDataMP(seq uint64, data []byte, t *P2PTunnel) {
+		GNetwork.nodeData <- data
+
+}
+
+func (app *p2pApp) isReliable() bool {
+	// return app.config.SrcPort != 0
+	return true
+}
+
+func (app *p2pApp) AvailableTunnel() (*P2PTunnel, int) {
+	for i := 0; i < app.tunnelNum; i++ {
+		if app.allTunnels[i] != nil {
+			return app.allTunnels[i], i
+		}
+	}
+	return nil, 0
+}
+
+func (app *p2pApp) fastestTunnel() (t *P2PTunnel, idx int) {
+	// gLog.d("appid:%d fastestTunnel %d %d",app.id, app.DirectRTT(), app.MinRelayRTT())
+	if gConf.Network.specTunnel > 0 {
+		if app.Tunnel(gConf.Network.specTunnel) != nil {
+			return app.Tunnel(gConf.Network.specTunnel), gConf.Network.specTunnel
+		}
+	}
+
+	for i := 0; i < app.tunnelNum; i++ {
+		if app.Tunnel(i) != nil {
+			t = app.Tunnel(i)
+			idx = i
+			break
+		}
+	}
+	return
+}
+
+func (app *p2pApp) ResetWindow() {
+	app.seqW = 0
+	app.seqR = 0
+	for i := 0; i < app.tunnelNum; i++ {
+		app.unAckSeqEnd[i].Store(0)
+		app.unAckTs[i].Store(0)
+		app.writeTs[i].Store(0)
+	}
+
+}
+
+func (app *p2pApp) Retry(all bool) {
+	gLog.d("appid:%d retry app %s", app.id, app.config.LogPeerNode())
+	for i := 0; i < app.tunnelNum; i++ {
+		app.retryNum[i] = 0
+		app.nextRetryTime[i] = time.Now()
+		if all && i == 0 {
+			app.hbMtx.Lock()
+			app.hbTime[i] = time.Now().Add(-TunnelHeartbeatTime * 3)
+			app.hbMtx.Unlock()
+			// app.config.retryNum = 0
+			app.config.nextRetryTime = time.Now()
+			app.ResetWindow()
+		}
+	}
+}
+
+func (app *p2pApp) StoreMessage(head *openP2PHeader, body []byte) {
+	app.msgChan <- appMsgCtx{head, body, time.Now()}
+}
+
+func (app *p2pApp) ReadMessage(mainType uint16, subType uint16, timeout time.Duration) (head *openP2PHeader, body []byte) {
+	for {
+		select {
+		case <-time.After(timeout):
+			gLog.e("appid:%d app.ReadMessage error %d:%d timeout", app.id, mainType, subType)
+			return
+		case msg := <-app.msgChan:
+			if time.Since(msg.ts) > ReadMsgTimeout {
+				gLog.d("appid:%d app.ReadMessage error expired %d:%d", app.id, mainType, subType)
+				continue
+			}
+			if msg.head.MainType != mainType || msg.head.SubType != subType {
+				gLog.d("appid:%d app.ReadMessage error type %d:%d, requeue it", app.id, msg.head.MainType, msg.head.SubType)
+				app.msgChan <- msg
+				time.Sleep(time.Second)
+				continue
+			}
+			head = msg.head
+			body = msg.body[8:]
+			return
+		}
+	}
+}
+
--- a/core/p2pnetwork.go
+++ b/core/p2pnetwork.go
--- a/core/p2ptunnel.go
+++ b/core/p2ptunnel.go
--- a/core/p2ptunnel_test.go
+++ b/core/p2ptunnel_test.go
@@ -0,0 +1,24 @@
+package openp2p
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestSelectPriority(t *testing.T) {
+	writeData := make(chan []byte, WriteDataChanSize)
+	writeDataSmall := make(chan []byte, WriteDataChanSize/30)
+	for i := 0; i < 100; i++ {
+		writeData <- []byte("data")
+		writeDataSmall <- []byte("small data")
+	}
+	for i := 0; i < 100; i++ {
+		select {
+		case buff := <-writeDataSmall:
+			fmt.Printf("got small data:%s\n", string(buff))
+		case buff := <-writeData:
+			fmt.Printf("got data:%s\n", string(buff))
+		}
+	}
+
+}
--- a/core/ping.go
+++ b/core/ping.go
@@ -0,0 +1,87 @@
+package openp2p
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"time"
+
+	"golang.org/x/net/icmp"
+	"golang.org/x/net/ipv4"
+)
+
+// 定义ICMP回显请求和应答的结构
+type ICMPMessage struct {
+	Type     uint8
+	Code     uint8
+	Checksum uint16
+	Ident    uint16
+	Seq      uint16
+	Data     []byte
+}
+
+// Ping sends an ICMP Echo request to the specified host and returns the response time.
+func Ping(host string) (time.Duration, error) {
+	// Resolve the IP address of the host
+	ipAddr, err := net.ResolveIPAddr("ip4", host)
+	if err != nil {
+		return 0, fmt.Errorf("failed to resolve host: %v", err)
+	}
+
+	// Create an ICMP listener
+	conn, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
+	if err != nil {
+		return 0, fmt.Errorf("failed to create ICMP connection: %v", err)
+	}
+	defer conn.Close()
+
+	// Create an ICMP Echo request message
+	message := icmp.Message{
+		Type: ipv4.ICMPTypeEcho,
+		Code: 0,
+		Body: &icmp.Echo{
+			ID:   os.Getpid() & 0xffff,
+			Seq:  1,
+			Data: []byte("HELLO-R-U-THERE"),
+		},
+	}
+
+	// Marshal the message into binary form
+	messageBytes, err := message.Marshal(nil)
+	if err != nil {
+		return 0, fmt.Errorf("failed to marshal ICMP message: %v", err)
+	}
+
+	// Send the ICMP Echo request
+	start := time.Now()
+	if _, err := conn.WriteTo(messageBytes, ipAddr); err != nil {
+		return 0, fmt.Errorf("failed to send ICMP request: %v", err)
+	}
+
+	// Set a deadline for the response
+	err = conn.SetReadDeadline(time.Now().Add(3 * time.Second))
+	if err != nil {
+		return 0, fmt.Errorf("failed to set read deadline: %v", err)
+	}
+
+	// Read the ICMP response
+	response := make([]byte, 1500)
+	n, _, err := conn.ReadFrom(response)
+	if err != nil {
+		return 0, fmt.Errorf("failed to read ICMP response: %v", err)
+	}
+
+	// Parse the ICMP response message
+	parsedMessage, err := icmp.ParseMessage(ipv4.ICMPTypeEchoReply.Protocol(), response[:n])
+	if err != nil {
+		return 0, fmt.Errorf("failed to parse ICMP response: %v", err)
+	}
+
+	// Check if the response is an Echo reply
+	if parsedMessage.Type == ipv4.ICMPTypeEchoReply {
+		duration := time.Since(start)
+		return duration, nil
+	} else {
+		return 0, fmt.Errorf("unexpected ICMP message: %+v", parsedMessage)
+	}
+}
--- a/core/protocol.go
+++ b/core/protocol.go
@@ -10,16 +10,24 @@ import (
 	"time"
 )

-const OpenP2PVersion = "3.6.11"
+const OpenP2PVersion = "3.25.8"
 const ProductName string = "openp2p"
 const LeastSupportVersion = "3.0.0"
-
+const SyncServerTimeVersion = "3.9.0"
+const SymmetricSimultaneouslySendVersion = "3.10.7"
+const PublicIPVersion = "3.11.2"
+const SupportIntranetVersion = "3.14.5"
+const SupportDualTunnelVersion = "3.15.5"
+const IPv6PunchVersion = "3.24.9"
+const SupportUDP4DirectVersion = "3.24.16"
+const SupportMultiDirectVersion = "3.25.1"
 const (
-	IfconfigPort1 = 27180
-	IfconfigPort2 = 27181
-	WsPort        = 27183
-	UDPPort1      = 27182
-	UDPPort2      = 27183
+	NATDetectPort1 = 27180
+	NATDetectPort2 = 27181
+	WsPort         = 27183
+	WsPort2        = 465
+	UDPPort1       = 27182
+	UDPPort2       = 27183
 )

 type openP2PHeader struct {
@@ -37,10 +45,18 @@ type PushHeader struct {

 var PushHeaderSize = binary.Size(PushHeader{})

+const RelayHeaderSize = 8
+
 type overlayHeader struct {
 	id uint64
 }

+type NodeDataMPAck struct {
+	FromNodeID uint64
+	Seq        uint64
+	Delay      uint32 // delay write mergeack ms
+}
+
 var overlayHeaderSize = binary.Size(overlayHeader{})

 func decodeHeader(data []byte) (*openP2PHeader, error) {
@@ -67,7 +83,7 @@ func encodeHeader(mainType uint16, subType uint16, len uint32) []byte {
 	return headBuf.Bytes()
 }

-// Message type
+// Message main type
 const (
 	MsgLogin     = 0
 	MsgHeartbeat = 1
@@ -77,79 +93,103 @@ const (
 	MsgRelay     = 5
 	MsgReport    = 6
 	MsgQuery     = 7
+	MsgSDWAN     = 8
 )

 // TODO: seperate node push and web push.
 const (
-	MsgPushRsp               = 0
-	MsgPushConnectReq        = 1
-	MsgPushConnectRsp        = 2
-	MsgPushHandshakeStart    = 3
-	MsgPushAddRelayTunnelReq = 4
-	MsgPushAddRelayTunnelRsp = 5
-	MsgPushUpdate            = 6
-	MsgPushReportApps        = 7
-	MsgPushUnderlayConnect   = 8
-	MsgPushEditApp           = 9
-	MsgPushSwitchApp         = 10
-	MsgPushRestart           = 11
-	MsgPushEditNode          = 12
-	MsgPushAPPKey            = 13
-	MsgPushReportLog         = 14
-	MsgPushDstNodeOnline     = 15
+	MsgPushRsp                  = 0
+	MsgPushConnectReq           = 1
+	MsgPushConnectRsp           = 2
+	MsgPushHandshakeStart       = 3
+	MsgPushAddRelayTunnelReq    = 4
+	MsgPushAddRelayTunnelRsp    = 5
+	MsgPushUpdate               = 6
+	MsgPushReportApps           = 7
+	MsgPushUnderlayConnect      = 8
+	MsgPushEditApp              = 9
+	MsgPushSwitchApp            = 10
+	MsgPushRestart              = 11
+	MsgPushEditNode             = 12
+	MsgPushAPPKey               = 13
+	MsgPushReportLog            = 14
+	MsgPushDstNodeOnline        = 15
+	MsgPushReportGoroutine      = 16
+	MsgPushReportMemApps        = 17
+	MsgPushServerSideSaveMemApp = 18
+	MsgPushCheckRemoteService   = 19
+	MsgPushSpecTunnel           = 20
+	MsgPushReportHeap           = 21
+	MsgPushSDWanRefresh         = 22
+	MsgPushNat4Detect           = 23
 )

 // MsgP2P sub type message
 const (
-	MsgPunchHandshake = iota
-	MsgPunchHandshakeAck
-	MsgTunnelHandshake
-	MsgTunnelHandshakeAck
-	MsgTunnelHeartbeat
-	MsgTunnelHeartbeatAck
-	MsgOverlayConnectReq
-	MsgOverlayConnectRsp
-	MsgOverlayDisconnectReq
-	MsgOverlayData
-	MsgRelayData
-	MsgRelayHeartbeat
-	MsgRelayHeartbeatAck
+	MsgPunchHandshake       = 0
+	MsgPunchHandshakeAck    = 1
+	MsgTunnelHandshake      = 2
+	MsgTunnelHandshakeAck   = 3
+	MsgTunnelHeartbeat      = 4
+	MsgTunnelHeartbeatAck   = 5
+	MsgOverlayConnectReq    = 6
+	MsgOverlayConnectRsp    = 7
+	MsgOverlayDisconnectReq = 8
+	MsgOverlayData          = 9
+	MsgRelayData            = 10
+	MsgRelayHeartbeat       = 11
+	MsgRelayHeartbeatAck    = 12
+	MsgNodeData             = 13
+	MsgRelayNodeData        = 14
+	MsgNodeDataMP           = 15
+	MsgNodeDataMPAck        = 16
+	MsgRelayHeartbeatAck2   = 17
 )

 // MsgRelay sub type message
 const (
-	MsgRelayNodeReq = iota
-	MsgRelayNodeRsp
+	MsgRelayNodeReq = 0
+	MsgRelayNodeRsp = 1
 )

 // MsgReport sub type message
 const (
-	MsgReportBasic = iota
-	MsgReportQuery
-	MsgReportConnect
-	MsgReportApps
-	MsgReportLog
+	MsgReportBasic    = 0
+	MsgReportQuery    = 1
+	MsgReportConnect  = 2
+	MsgReportApps     = 3
+	MsgReportLog      = 4
+	MsgReportMemApps  = 5
+	MsgReportResponse = 6
+	MsgReportBasicRsp = 7
 )

 const (
-	ReadBuffLen           = 4096             // for UDP maybe not enough
-	NetworkHeartbeatTime  = time.Second * 30 // TODO: server no response hb, save flow
-	TunnelHeartbeatTime   = time.Second * 15
-	TunnelIdleTimeout     = time.Minute
-	SymmetricHandshakeNum = 800 // 0.992379
+	ReadBuffLen               = 4096 // for UDP maybe not enough
+	NetworkHeartbeatTime      = time.Second * 30
+	TunnelHeartbeatTime       = time.Second * 10 // some nat udp session expired time less than 15s. change to 10s
+	UnderlayTCPKeepalive      = time.Second * 5
+	UnderlayTCPConnectTimeout = time.Second * 5
+	TunnelIdleTimeout         = time.Minute
+	SymmetricHandshakeNum     = 800 // 0.992379
 	// SymmetricHandshakeNum        = 1000 // 0.999510
-	SymmetricHandshakeInterval   = time.Millisecond
-	SymmetricHandshakeAckTimeout = time.Second * 11
-	PeerAddRelayTimeount         = time.Second * 20
-	CheckActiveTimeout           = time.Second * 5
-	PaddingSize                  = 16
-	AESKeySize                   = 16
-	MaxRetry                     = 10
-	RetryInterval                = time.Second * 30
-	PublicIPEchoTimeout          = time.Second * 1
-	NatTestTimeout               = time.Second * 5
-	ClientAPITimeout             = time.Second * 10
-	MaxDirectTry                 = 3
+	SymmetricHandshakeInterval = time.Millisecond
+	HandshakeTimeout           = time.Second * 7
+	PunchTsDelay               = time.Second * 3
+	PeerAddRelayTimeount       = time.Second * 30 // peer need times. S2C\TCP\TCP Punch\UDP Punch
+	CheckActiveTimeout         = time.Second * 5
+	ReadMsgTimeout             = time.Second * 5
+	PaddingSize                = 16
+	AESKeySize                 = 16
+	MaxRetry                   = 10
+	Cone2ConeTCPPunchMaxRetry  = 1
+	Cone2ConeUDPPunchMaxRetry  = 1
+	PublicIPEchoTimeout        = time.Second * 5
+	NatDetectTimeout           = time.Second * 5
+	UDPReadTimeout             = time.Second * 5
+	ClientAPITimeout           = time.Second * 10
+	UnderlayConnectTimeout     = time.Second * 10
+	MaxDirectTry               = 3
 )

 // NATNone has public ip
@@ -171,8 +211,9 @@ const (
 const (
 	LinkModeUDPPunch = "udppunch"
 	LinkModeTCPPunch = "tcppunch"
-	LinkModeIPv4     = "ipv4" // for web
-	LinkModeIPv6     = "ipv6" // for web
+	LinkModeIPv4     = "ipv4"     // for web
+	LinkModeIntranet = "intranet" // for web
+	LinkModeIPv6     = "ipv6"     // for web
 	LinkModeTCP6     = "tcp6"
 	LinkModeTCP4     = "tcp4"
 	LinkModeUDP6     = "udp6"
@@ -180,8 +221,19 @@ const (
 )

 const (
-	MsgQueryPeerInfoReq = iota
-	MsgQueryPeerInfoRsp
+	MsgQueryPeerInfoReq = 0
+	MsgQueryPeerInfoRsp = 1
+)
+
+const (
+	MsgSDWANInfoReq = 0
+	MsgSDWANInfoRsp = 1
+)
+
+// MsgNATDetect
+const (
+	MsgNAT      = 0
+	MsgPublicIP = 1
 )

 func newMessage(mainType uint16, subType uint16, packet interface{}) ([]byte, error) {
@@ -204,7 +256,22 @@ func newMessage(mainType uint16, subType uint16, packet interface{}) ([]byte, er
 	return writeBytes, nil
 }

-func nodeNameToID(name string) uint64 {
+func newMessageWithBuff(mainType uint16, subType uint16, data []byte) ([]byte, error) {
+	head := openP2PHeader{
+		uint32(len(data)),
+		mainType,
+		subType,
+	}
+	headBuf := new(bytes.Buffer)
+	err := binary.Write(headBuf, binary.LittleEndian, head)
+	if err != nil {
+		return nil, err
+	}
+	writeBytes := append(headBuf.Bytes(), data...)
+	return writeBytes, nil
+}
+
+func NodeNameToID(name string) uint64 {
 	return crc64.Checksum([]byte(name), crc64.MakeTable(crc64.ISO))
 }

@@ -222,7 +289,8 @@ type PushConnectReq struct {
 	ID               uint64 `json:"id,omitempty"`
 	AppKey           uint64 `json:"appKey,omitempty"` // for underlay tcp
 	LinkMode         string `json:"linkMode,omitempty"`
-	IsUnderlayServer int    `json:"isServer,omitempty"` // Requset spec peer is server
+	IsUnderlayServer int    `json:"isServer,omitempty"`         // Requset spec peer is server
+	UnderlayProtocol string `json:"underlayProtocol,omitempty"` // quic or kcp, default quic
 }
 type PushDstNodeOnline struct {
 	Node string `json:"node,omitempty"`
@@ -239,6 +307,7 @@ type PushConnectRsp struct {
 	ConeNatPort     int    `json:"coneNatPort,omitempty"` //it's not only cone, but also upnp or nat-pmp hole
 	FromIP          string `json:"fromIP,omitempty"`
 	ID              uint64 `json:"id,omitempty"`
+	PunchTs         uint64 `json:"punchts,omitempty"` // server timestamp
 	Version         string `json:"version,omitempty"`
 }
 type PushRsp struct {
@@ -247,12 +316,15 @@ type PushRsp struct {
 }

 type LoginRsp struct {
-	Error  int    `json:"error,omitempty"`
-	Detail string `json:"detail,omitempty"`
-	User   string `json:"user,omitempty"`
-	Node   string `json:"node,omitempty"`
-	Token  uint64 `json:"token,omitempty"`
-	Ts     int64  `json:"ts,omitempty"`
+	Error         int    `json:"error,omitempty"`
+	Detail        string `json:"detail,omitempty"`
+	User          string `json:"user,omitempty"`
+	Node          string `json:"node,omitempty"`
+	Token         uint64 `json:"token,omitempty"`
+	Ts            int64  `json:"ts,omitempty"`
+	LoginMaxDelay int    `json:"loginMaxDelay,omitempty"` // seconds
+	Forcev6       int    `json:"forcev6,omitempty"`
+	PublicIPPort  int    `json:"publicIPPort,omitempty"`
 }

 type NatDetectReq struct {
@@ -287,7 +359,8 @@ type TunnelMsg struct {
 }

 type RelayNodeReq struct {
-	PeerNode string `json:"peerNode,omitempty"`
+	PeerNode     string `json:"peerNode,omitempty"`
+	ExcludeNodes string `json:"excludeNodes,omitempty"` //TODO: add exclude ip
 }

 type RelayNodeRsp struct {
@@ -297,11 +370,15 @@ type RelayNodeRsp struct {
 }

 type AddRelayTunnelReq struct {
-	From       string `json:"from,omitempty"`
-	RelayName  string `json:"relayName,omitempty"`
-	RelayToken uint64 `json:"relayToken,omitempty"`
-	AppID      uint64 `json:"appID,omitempty"`  // deprecated
-	AppKey     uint64 `json:"appKey,omitempty"` // deprecated
+	From             string `json:"from,omitempty"`
+	RelayName        string `json:"relayName,omitempty"`
+	RelayTunnelID    uint64 `json:"relayTunnelID,omitempty"`
+	RelayToken       uint64 `json:"relayToken,omitempty"`
+	RelayMode        string `json:"relayMode,omitempty"`
+	AppID            uint64 `json:"appID,omitempty"`            // deprecated
+	AppKey           uint64 `json:"appKey,omitempty"`           // deprecated
+	UnderlayProtocol string `json:"underlayProtocol,omitempty"` // quic or kcp, default quic
+	PunchPriority    int    `json:"punchPriority,omitempty"`
 }

 type APPKeySync struct {
@@ -310,8 +387,10 @@ type APPKeySync struct {
 }

 type RelayHeartbeat struct {
-	RelayTunnelID uint64 `json:"relayTunnelID,omitempty"`
-	AppID         uint64 `json:"appID,omitempty"`
+	From           string `json:"from,omitempty"`
+	RelayTunnelID  uint64 `json:"relayTunnelID,omitempty"`
+	RelayTunnelID2 uint64 `json:"relayTunnelID2,omitempty"`
+	AppID          uint64 `json:"appID,omitempty"`
 }

 type ReportBasic struct {
@@ -320,6 +399,7 @@ type ReportBasic struct {
 	LanIP           string  `json:"lanIP,omitempty"`
 	HasIPv4         int     `json:"hasIPv4,omitempty"`
 	IPv6            string  `json:"IPv6,omitempty"`
+	PublicIPPort    int     `json:"publicIPPort,omitempty"`
 	HasUPNPorNATPMP int     `json:"hasUPNPorNATPMP,omitempty"`
 	Version         string  `json:"version,omitempty"`
 	NetInfo         NetInfo `json:"netInfo,omitempty"`
@@ -345,9 +425,11 @@ type AppInfo struct {
 	AppName        string `json:"appName,omitempty"`
 	Error          string `json:"error,omitempty"`
 	Protocol       string `json:"protocol,omitempty"`
+	PunchPriority  int    `json:"punchPriority,omitempty"`
+	Whitelist      string `json:"whitelist,omitempty"`
 	SrcPort        int    `json:"srcPort,omitempty"`
 	Protocol0      string `json:"protocol0,omitempty"`
-	SrcPort0       int    `json:"srcPort0,omitempty"`
+	SrcPort0       int    `json:"srcPort0,omitempty"` // srcport+protocol is uneque, use as old app id
 	NatType        int    `json:"natType,omitempty"`
 	PeerNode       string `json:"peerNode,omitempty"`
 	DstPort        int    `json:"dstPort,omitempty"`
@@ -357,6 +439,7 @@ type AppInfo struct {
 	PeerIP         string `json:"peerIP,omitempty"`
 	ShareBandwidth int    `json:"shareBandWidth,omitempty"`
 	RelayNode      string `json:"relayNode,omitempty"`
+	SpecRelayNode  string `json:"specRelayNode,omitempty"`
 	RelayMode      string `json:"relayMode,omitempty"`
 	LinkMode       string `json:"linkMode,omitempty"`
 	Version        string `json:"version,omitempty"`
@@ -367,13 +450,16 @@ type AppInfo struct {
 }

 type ReportApps struct {
-	Apps []AppInfo
+	Apps     []AppInfo
+	TunError string `json:"tunError,omitempty"`
 }

 type ReportLogReq struct {
-	FileName string `json:"fileName,omitempty"`
-	Offset   int64  `json:"offset,omitempty"`
-	Len      int64  `json:"len,omitempty"`
+	FileName      string `json:"fileName,omitempty"`
+	Offset        int64  `json:"offset,omitempty"`
+	Len           int64  `json:"len,omitempty"`
+	IsSetLogLevel int64  `json:"isSetLogLevel,omitempty"`
+	LogLevel      int64  `json:"loglevel,omitempty"`
 }
 type ReportLogRsp struct {
 	FileName string `json:"fileName,omitempty"`
@@ -386,6 +472,7 @@ type UpdateInfo struct {
 	Error       int    `json:"error,omitempty"`
 	ErrorDetail string `json:"errorDetail,omitempty"`
 	Url         string `json:"url,omitempty"`
+	Url2        string `json:"url2,omitempty"`
 }

 type NetInfo struct {
@@ -417,8 +504,10 @@ type ProfileInfo struct {
 }

 type EditNode struct {
-	NewName   string `json:"newName,omitempty"`
-	Bandwidth int    `json:"bandwidth,omitempty"`
+	NewName      string `json:"newName,omitempty"`
+	Bandwidth    int    `json:"bandwidth,omitempty"`
+	Forcev6      int    `json:"forcev6,omitempty"`
+	PublicIPPort int    `json:"publicIPPort,omitempty"`
 }

 type QueryPeerInfoReq struct {
@@ -426,11 +515,209 @@ type QueryPeerInfoReq struct {
 	PeerNode string `json:"peerNode,omitempty"`
 }
 type QueryPeerInfoRsp struct {
+	PeerNode        string `json:"peerNode,omitempty"`
 	Online          int    `json:"online,omitempty"`
 	Version         string `json:"version,omitempty"`
 	NatType         int    `json:"natType,omitempty"`
 	IPv4            string `json:"IPv4,omitempty"`
+	LanIP           string `json:"lanIP,omitempty"`
 	HasIPv4         int    `json:"hasIPv4,omitempty"` // has public ipv4
 	IPv6            string `json:"IPv6,omitempty"`    // if public relay node, ipv6 not set
 	HasUPNPorNATPMP int    `json:"hasUPNPorNATPMP,omitempty"`
 }
+
+type SDWANNode struct {
+	Name     string `json:"name,omitempty"`
+	IP       string `json:"ip,omitempty"`
+	Resource string `json:"resource,omitempty"`
+	Enable   int32  `json:"enable,omitempty"`
+}
+
+type SDWANInfo struct {
+	ID            uint64 `json:"id,omitempty"`
+	Name          string `json:"name,omitempty"`
+	Gateway       string `json:"gateway,omitempty"`
+	Mode          string `json:"mode,omitempty"` // default: fullmesh; central
+	CentralNode   string `json:"centralNode,omitempty"`
+	ForceRelay    int32  `json:"forceRelay,omitempty"`
+	PunchPriority int32  `json:"punchPriority,omitempty"`
+	Enable        int32  `json:"enable,omitempty"`
+	TunnelNum     int32  `json:"tunnelNum,omitempty"`
+	Mtu           int32  `json:"mtu,omitempty"`
+	Nodes         []*SDWANNode
+}
+
+const (
+	SDWANModeFullmesh = "fullmesh"
+	SDWANModeCentral  = "central"
+)
+
+type ServerSideSaveMemApp struct {
+	From          string `json:"from,omitempty"`
+	Node          string `json:"node,omitempty"`          // for server side findtunnel, maybe relayNode
+	TunnelID      uint64 `json:"tunnelID,omitempty"`      // save in app.tunnel or app.relayTunnel
+	RelayTunnelID uint64 `json:"relayTunnelID,omitempty"` // rtid, if not 0 relay
+	RelayMode     string `json:"relayMode,omitempty"`
+	AppID         uint64 `json:"appID,omitempty"`
+	AppKey        uint64 `json:"appKey,omitempty"`
+	RelayIndex    uint32 `json:"relayIndex,omitempty"`
+	TunnelNum     uint32 `json:"tunnelNum,omitempty"`
+	SrcPort       uint32 `json:"srcPort,omitempty"`
+}
+
+type CheckRemoteService struct {
+	Host string `json:"host,omitempty"`
+	Port uint32 `json:"port,omitempty"`
+}
+
+type SpecTunnel struct {
+	TunnelIndex uint32 `json:"tunnelIndex,omitempty"`
+}
+
+type Nat4Detect struct {
+	CustomData []*Nat4DetectItem
+	Num        int32 `json:"num,omitempty"`
+	*Nat4DetectItem
+}
+
+type Nat4DetectItem struct {
+	Protocol   string `json:"protocol,omitempty"`
+	Server     string `json:"server,omitempty"`
+	ServerPort int32  `json:"serverPort,omitempty"`
+	LocalPort  int32  `json:"localPort,omitempty"`
+}
+
+const rootCA = `-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----`
+
+const rootEdgeCA = `-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----`
+
+const ISRGRootX1 = `-----BEGIN CERTIFICATE-----
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+-----BEGIN CERTIFICATE-----
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+-----BEGIN CERTIFICATE-----
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+A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW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=
+-----END CERTIFICATE-----
+`
--- a/core/sdwan.go
+++ b/core/sdwan.go
@@ -0,0 +1,383 @@
+package openp2p
+
+import (
+	"encoding/binary"
+	"encoding/json"
+	"fmt"
+	"net"
+	"reflect"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+)
+
+type PacketHeader struct {
+	version int
+	// src     uint32
+	// prot    uint8
+	protocol byte
+	dst      uint32
+	port     uint16
+}
+
+func parseHeader(b []byte, h *PacketHeader) error {
+	if len(b) < 20 {
+		return fmt.Errorf("small packet")
+	}
+	h.version = int(b[0] >> 4)
+	h.protocol = byte(b[9])
+	if h.version == 4 {
+		h.dst = binary.BigEndian.Uint32(b[16:20])
+	} else if h.version != 6 {
+		return fmt.Errorf("unknown version in ip header:%d", h.version)
+	}
+	if h.protocol == 6 || h.protocol == 17 { // TCP or UDP
+		h.port = binary.BigEndian.Uint16(b[22:24])
+	}
+	return nil
+}
+
+type sdwanNode struct {
+	name string
+	id   uint64
+}
+
+type p2pSDWAN struct {
+	tun           *optun
+	tunErr        string
+	sysRoute      sync.Map // ip:sdwanNode
+	subnet        *net.IPNet
+	gateway       net.IP
+	virtualIP     *net.IPNet
+	internalRoute *IPTree
+}
+
+func (s *p2pSDWAN) reset() {
+	gLog.i("reset sdwan when network disconnected")
+	// clear sysroute
+	delRoutesByGateway(s.gateway.String())
+	s.sysRoute.Range(func(key, value interface{}) bool {
+		s.sysRoute.Delete(key)
+		return true
+	})
+	// clear internel route
+	s.internalRoute = NewIPTree("")
+	// clear p2papp
+	for _, node := range gConf.getSDWAN().Nodes {
+		gConf.delete(AppConfig{SrcPort: 0, PeerNode: node.Name})
+		GNetwork.DeleteApp(AppConfig{SrcPort: 0, PeerNode: node.Name})
+	}
+
+	gConf.resetSDWAN()
+}
+
+func (s *p2pSDWAN) init() error {
+	gConf.Network.previousIP = gConf.Network.publicIP
+	if gConf.getSDWAN().Gateway == "" {
+		gLog.d("sdwan init: not in sdwan clear all ")
+	}
+	if s.internalRoute == nil {
+		s.internalRoute = NewIPTree("")
+	}
+
+	if gw, sn, err := net.ParseCIDR(gConf.getSDWAN().Gateway); err == nil { // preserve old gateway
+		s.gateway = gw
+		s.subnet = sn
+	}
+
+	for _, node := range gConf.getDelNodes() {
+		gLog.d("sdwan init: deal deleted node: %s", node.Name)
+		gLog.d("sdwan init: delRoute: %s, %s ", node.IP, s.gateway.String())
+		// delRoute(node.IP, s.gateway.String()) // TODO: seems no need delelte each node
+		s.internalRoute.Del(node.IP, node.IP)
+		ipNum, _ := inetAtoN(node.IP)
+		s.sysRoute.Delete(ipNum)
+		// if node.Name == gConf.Network.Node {
+		// 	// this is local node, need rm all client-side apps
+		// 	GNetwork.apps.Range(func(id, i interface{}) bool {
+		// 		app := i.(*p2pApp)
+		// 		if app.config.is
+		// 		return true
+		// 	})
+		// 	continue
+		// }
+		gConf.delete(AppConfig{SrcPort: 0, PeerNode: node.Name})
+		GNetwork.DeleteApp(AppConfig{SrcPort: 0, PeerNode: node.Name})
+		arr := strings.Split(node.Resource, ",")
+		for _, r := range arr {
+			_, ipnet, err := net.ParseCIDR(r)
+			if err != nil {
+				// fmt.Println("Error parsing CIDR:", err)
+				continue
+			}
+			if ipnet.Contains(net.ParseIP(gConf.Network.localIP)) { // local ip and resource in the same lan
+				continue
+			}
+			minIP := ipnet.IP
+			maxIP := make(net.IP, len(minIP))
+			copy(maxIP, minIP)
+			for i := range minIP {
+				maxIP[i] = minIP[i] | ^ipnet.Mask[i]
+			}
+			s.internalRoute.Del(minIP.String(), maxIP.String())
+			delRoute(ipnet.String(), s.gateway.String())
+			gLog.d("sdwan init: resource delRoute: %s, %s ", ipnet.String(), s.gateway.String())
+		}
+	}
+	for _, node := range gConf.getAddNodes() {
+		gLog.d("sdwan init: deal add node: %s", node.Name)
+		ipNet := &net.IPNet{
+			IP:   net.ParseIP(node.IP),
+			Mask: s.subnet.Mask,
+		}
+		if node.Name == gConf.Network.Node {
+			s.virtualIP = ipNet
+			gLog.i("sdwan init: start tun %s", ipNet.String())
+			err := s.StartTun()
+			if err != nil {
+				gLog.e("sdwan init: start tun error:%s", err)
+				return err
+			}
+			gLog.i("sdwan init: start tun ok")
+			allowTunForward()
+			gLog.d("sdwan init: addRoute %s %s %s", s.subnet.String(), s.gateway.String(), s.tun.tunName)
+			addRoute(s.subnet.String(), s.gateway.String(), s.tun.tunName)
+			// addRoute("255.255.255.255/32", s.gateway.String(), s.tun.tunName) // for broadcast
+			// addRoute("224.0.0.0/4", s.gateway.String(), s.tun.tunName)        // for multicast
+			initSNATRule(s.subnet.String()) // for network resource
+			continue
+		}
+		ip, err := inetAtoN(ipNet.String())
+		if err != nil {
+			return err
+		}
+		s.sysRoute.Store(ip, &sdwanNode{name: node.Name, id: NodeNameToID(node.Name)})
+		s.internalRoute.AddIntIP(ip, ip, &sdwanNode{name: node.Name, id: NodeNameToID(node.Name)})
+	}
+	for _, node := range gConf.getAddNodes() {
+		if node.Name == gConf.Network.Node { // not deal resource itself
+			continue
+		}
+		if len(node.Resource) > 0 {
+			gLog.i("sdwan init: deal add node: %s resource: %s", node.Name, node.Resource)
+			arr := strings.Split(node.Resource, ",")
+			for _, r := range arr {
+				// add internal route
+				_, ipnet, err := net.ParseCIDR(r)
+				if err != nil {
+					fmt.Println("sdwan init: Error parsing CIDR:", err)
+					continue
+				}
+				if ipnet.Contains(net.ParseIP(gConf.Network.localIP)) { // local ip and resource in the same lan
+					gLog.d("sdwan init: local ip %s in this resource %s, ignore", gConf.Network.localIP, ipnet.IP.String())
+					continue
+				}
+				// local net could access this single ip
+				if ipnet.Mask[0] == 255 && ipnet.Mask[1] == 255 && ipnet.Mask[2] == 255 && ipnet.Mask[3] == 255 {
+					gLog.d("sdwan init: ping %s start", ipnet.IP.String())
+					if _, err := Ping(ipnet.IP.String()); err == nil {
+						gLog.d("sdwan init: ping %s ok, ignore this resource", ipnet.IP.String())
+						continue
+					}
+					gLog.d("sdwan init: ping %s failed", ipnet.IP.String())
+				}
+				minIP := ipnet.IP
+				maxIP := make(net.IP, len(minIP))
+				copy(maxIP, minIP)
+				for i := range minIP {
+					maxIP[i] = minIP[i] | ^ipnet.Mask[i]
+				}
+				s.internalRoute.Add(minIP.String(), maxIP.String(), &sdwanNode{name: node.Name, id: NodeNameToID(node.Name)})
+				// add sys route
+				gLog.d("sdwan init: addRoute %s %s %s", ipnet.String(), s.gateway.String(), s.tun.tunName)
+				addRoute(ipnet.String(), s.gateway.String(), s.tun.tunName)
+			}
+		}
+	}
+	gConf.retryAllMemApp()
+	gLog.i("sdwan init ok")
+	return nil
+}
+
+func (s *p2pSDWAN) run() {
+	s.sysRoute.Range(func(key, value interface{}) bool {
+		node := value.(*sdwanNode)
+		GNetwork.ConnectNode(node.name)
+		return true
+	})
+}
+
+func (s *p2pSDWAN) readNodeLoop() {
+	gLog.d("sdwan readNodeLoop start")
+	defer gLog.d("sdwan readNodeLoop end")
+	writeBuff := make([][]byte, 1)
+	for {
+		nd := GNetwork.ReadNode(time.Second * 10) // TODO: read multi packet
+		if nd == nil {
+			gLog.dev("waiting for node data")
+			continue
+		}
+		head := PacketHeader{}
+		parseHeader(nd, &head)
+		gLog.dev("write tun dst ip=%s,len=%d", net.IP{byte(head.dst >> 24), byte(head.dst >> 16), byte(head.dst >> 8), byte(head.dst)}.String(), len(nd))
+		if PIHeaderSize == 0 {
+			writeBuff[0] = nd
+		} else {
+			writeBuff[0] = make([]byte, PIHeaderSize+len(nd))
+			copy(writeBuff[0][PIHeaderSize:], nd)
+		}
+
+		len, err := s.tun.Write(writeBuff, PIHeaderSize)
+		if err != nil {
+			gLog.d("write tun dst ip=%s,len=%d,error:%s", net.IP{byte(head.dst >> 24), byte(head.dst >> 16), byte(head.dst >> 8), byte(head.dst)}.String(), len, err)
+		}
+	}
+}
+
+func isBroadcastOrMulticast(ipUint32 uint32, subnet *net.IPNet) bool {
+	// return ipUint32 == 0xffffffff || (byte(ipUint32) == 0xff) || (ipUint32>>28 == 0xe)
+	return ipUint32 == 0xffffffff || (ipUint32>>28 == 0xe) // 225.255.255.255/32, 224.0.0.0/4
+}
+
+func (s *p2pSDWAN) routeTunPacket(p []byte, head *PacketHeader) {
+	var node *sdwanNode
+	// v, ok := s.routes.Load(ih.dst)
+	v, ok := s.internalRoute.Load(head.dst)
+	if !ok || v == nil {
+		if isBroadcastOrMulticast(head.dst, s.subnet) {
+			gLog.dev("multicast ip=%s", net.IP{byte(head.dst >> 24), byte(head.dst >> 16), byte(head.dst >> 8), byte(head.dst)}.String())
+			GNetwork.WriteBroadcast(p)
+			return
+		}
+		gLog.dev("internalRoute not found ip:%s", net.IP{byte(head.dst >> 24), byte(head.dst >> 16), byte(head.dst >> 8), byte(head.dst)}.String())
+		return
+	} else {
+		node = v.(*sdwanNode)
+	}
+
+	err := GNetwork.WriteNode(node.id, p)
+	if err != nil {
+		gLog.dev("write packet to %s fail: %s", node.name, err)
+	}
+}
+
+func (s *p2pSDWAN) readTunLoop() {
+	gLog.d("sdwan readTunLoop start")
+	defer gLog.d("sdwan readTunLoop end")
+	readBuff := make([][]byte, ReadTunBuffNum)
+	for i := 0; i < ReadTunBuffNum; i++ {
+		readBuff[i] = make([]byte, ReadTunBuffSize+PIHeaderSize)
+	}
+	readBuffSize := make([]int, ReadTunBuffNum)
+	ih := PacketHeader{}
+	for {
+		n, err := s.tun.Read(readBuff, readBuffSize, PIHeaderSize)
+		if err != nil {
+			gLog.e("read tun fail: %s", err)
+			return
+		}
+		for i := 0; i < n; i++ {
+			if readBuffSize[i] > ReadTunBuffSize {
+				gLog.e("read tun overflow: len=%d", readBuffSize[i])
+				continue
+			}
+			parseHeader(readBuff[i][PIHeaderSize:readBuffSize[i]+PIHeaderSize], &ih)
+			gLog.dev("read tun dst ip=%s,len=%d", net.IP{byte(ih.dst >> 24), byte(ih.dst >> 16), byte(ih.dst >> 8), byte(ih.dst)}.String(), readBuffSize[0])
+			s.routeTunPacket(readBuff[i][PIHeaderSize:readBuffSize[i]+PIHeaderSize], &ih)
+		}
+	}
+}
+
+func (s *p2pSDWAN) StartTun() error {
+	sdwan := gConf.getSDWAN()
+	if s.tun == nil {
+		tun := &optun{}
+		err := tun.Start(s.virtualIP.String(), &sdwan)
+		if err != nil {
+			gLog.e("open tun fail:%v", err)
+			s.tunErr = err.Error()
+			return err
+		}
+		s.tun = tun
+		s.tunErr = ""
+		go s.readTunLoop()
+		go s.readNodeLoop() // multi-thread read will cause packets out of order, resulting in slower speeds
+	}
+	err := setTunAddr(s.tun.tunName, s.virtualIP.String(), sdwan.Gateway, s.tun.dev)
+	if err != nil {
+		gLog.e("setTunAddr error:%s,%s,%s,%s", err, s.tun.tunName, s.virtualIP.String(), sdwan.Gateway)
+		return err
+	}
+	return nil
+}
+
+func handleSDWAN(subType uint16, msg []byte) error {
+	gLog.d("handle sdwan msg type:%d", subType)
+	var err error
+	switch subType {
+	case MsgSDWANInfoRsp:
+		rsp := SDWANInfo{}
+		if err = json.Unmarshal(msg[openP2PHeaderSize:], &rsp); err != nil {
+			return ErrMsgFormat
+		}
+		gLog.i("sdwan init:%s", prettyJson(rsp))
+		// GNetwork.sdwan.detail = &rsp
+		if gConf.Network.previousIP != gConf.Network.publicIP || gConf.getSDWAN().CentralNode != rsp.CentralNode || gConf.getSDWAN().Gateway != rsp.Gateway {
+			GNetwork.sdwan.reset()
+			preAndroidSDWANConfig = "" // let androind app reset vpnservice
+		}
+		gConf.setSDWAN(rsp)
+		if runtime.GOOS == "android" {
+			if !compareResources(preAndroidSDWANConfig, string(msg[openP2PHeaderSize:])) { // when config change, notify android app
+				select {
+				case AndroidSDWANConfig <- msg[openP2PHeaderSize:]:
+				default:
+				}
+				preAndroidSDWANConfig = string(msg[openP2PHeaderSize:])
+			}
+		}
+		err = GNetwork.sdwan.init()
+		if err != nil {
+			gLog.e("sdwan init fail: %s", err)
+			if GNetwork.sdwan.tun != nil {
+				GNetwork.sdwan.tun.Stop()
+				GNetwork.sdwan.tun = nil
+				return err
+			}
+		}
+		go GNetwork.sdwan.run()
+	default:
+	}
+	return err
+}
+
+// for android vpnservice
+func compareResources(json1, json2 string) bool {
+	var net1, net2 SDWANInfo
+	if err := json.Unmarshal([]byte(json1), &net1); err != nil {
+		fmt.Println("Error parsing json1:", err)
+		fmt.Println("Error parsing json1:", string(json1))
+		return false
+	}
+	if err := json.Unmarshal([]byte(json2), &net2); err != nil {
+		fmt.Println("Error parsing json2:", err)
+		fmt.Println("Error parsing json1:", string(json2))
+		return false
+	}
+
+	// 获取所有资源并比较
+	resources1 := getResources(net1)
+	resources2 := getResources(net2)
+	return reflect.DeepEqual(resources1, resources2)
+}
+
+func getResources(network SDWANInfo) []string {
+	var resources []string
+	for _, node := range network.Nodes {
+		if node.Resource != "" {
+			resources = append(resources, node.Resource)
+		}
+	}
+	return resources
+}
--- a/core/speedlimiter.go
+++ b/core/speedlimiter.go
@@ -0,0 +1,50 @@
+package openp2p
+
+import (
+	"sync"
+	"time"
+)
+
+// SpeedLimiter ...
+type SpeedLimiter struct {
+	lastUpdate time.Time
+	speed      int // per second
+	precision  int // seconds
+	freeCap    int
+	maxFreeCap int
+	mtx        sync.Mutex
+}
+
+func newSpeedLimiter(speed int, precision int) *SpeedLimiter {
+	return &SpeedLimiter{
+		speed:      speed,
+		precision:  precision,
+		lastUpdate: time.Now(),
+		maxFreeCap: speed * precision,
+		freeCap:    speed * precision,
+	}
+}
+
+// Add ...
+func (sl *SpeedLimiter) Add(increment int, wait bool) bool {
+	if sl.speed <= 0 {
+		return true
+	}
+	sl.mtx.Lock()
+	defer sl.mtx.Unlock()
+	sl.freeCap += int(time.Since(sl.lastUpdate) * time.Duration(sl.speed) / time.Second)
+	if sl.freeCap > sl.maxFreeCap {
+		sl.freeCap = sl.maxFreeCap
+	}
+	if !wait && sl.freeCap < increment {
+		return false
+	}
+	sl.freeCap -= increment
+	sl.lastUpdate = time.Now()
+	if sl.freeCap < 0 {
+		// sleep for the overflow
+		// fmt.Println("sleep ", time.Millisecond*time.Duration(-sl.freeCap*100)/time.Duration(sl.speed))
+		time.Sleep(time.Millisecond * time.Duration(-sl.freeCap*1000) / time.Duration(sl.speed)) // sleep ms
+	}
+	return true
+}
--- a/core/speedlimiter_test.go
+++ b/core/speedlimiter_test.go
@@ -0,0 +1,61 @@
+package openp2p
+
+import (
+	"log"
+	"testing"
+	"time"
+)
+
+func TestBandwidth(t *testing.T) {
+	speed := 10 * 1024 * 1024 / 8 // 10mbps
+	speedl := newSpeedLimiter(speed, 1)
+	oneBuffSize := 4096
+	writeNum := 5000
+	expectTime := oneBuffSize * writeNum / speed
+	startTs := time.Now()
+	for i := 0; i < writeNum; i++ {
+		speedl.Add(oneBuffSize, true)
+	}
+	log.Printf("cost %ds, expect %ds", time.Since(startTs)/time.Second, expectTime)
+	if time.Since(startTs) > time.Duration(expectTime+1)*time.Second || time.Since(startTs) < time.Duration(expectTime-1)*time.Second {
+		t.Error("error")
+	}
+}
+
+func TestSymmetric(t *testing.T) {
+	speed := 20000 / 180
+	speedl := newSpeedLimiter(speed, 180)
+	oneBuffSize := 300
+	writeNum := 70
+	expectTime := (oneBuffSize*writeNum - 20000) / speed
+	log.Printf("expect %ds", expectTime)
+	startTs := time.Now()
+	for i := 0; i < writeNum; i++ {
+		speedl.Add(oneBuffSize, true)
+	}
+	log.Printf("cost %ds, expect %ds", time.Since(startTs)/time.Second, expectTime)
+	if time.Since(startTs) > time.Duration(expectTime+1)*time.Second || time.Since(startTs) < time.Duration(expectTime-1)*time.Second {
+		t.Error("error")
+	}
+}
+
+func TestSymmetric2(t *testing.T) {
+	speed := 30000 / 180
+	speedl := newSpeedLimiter(speed, 180)
+	oneBuffSize := 800
+	writeNum := 40
+	expectTime := (oneBuffSize*writeNum - 30000) / speed
+	log.Printf("expect %ds", expectTime)
+	startTs := time.Now()
+	for i := 0; i < writeNum; {
+		if speedl.Add(oneBuffSize, true) {
+			i++
+		} else {
+			time.Sleep(time.Millisecond)
+		}
+	}
+	log.Printf("cost %ds, expect %ds", time.Since(startTs)/time.Second, expectTime)
+	if time.Since(startTs) > time.Duration(expectTime+1)*time.Second || time.Since(startTs) < time.Duration(expectTime-1)*time.Second {
+		t.Error("error")
+	}
+}
--- a/core/udp.go
+++ b/core/udp.go
@@ -18,27 +18,30 @@ func UDPWrite(conn *net.UDPConn, dst net.Addr, mainType uint16, subType uint16,
 	return conn.WriteTo(msg, dst)
 }

-func UDPRead(conn *net.UDPConn, timeout int) (ra net.Addr, head *openP2PHeader, result []byte, len int, err error) {
+func UDPRead(conn *net.UDPConn, timeout time.Duration) (ra net.Addr, head *openP2PHeader, buff []byte, length int, err error) {
 	if timeout > 0 {
-		deadline := time.Now().Add(time.Millisecond * time.Duration(timeout))
-		err = conn.SetReadDeadline(deadline)
+		err = conn.SetReadDeadline(time.Now().Add(timeout))
 		if err != nil {
-			gLog.Println(LvERROR, "SetReadDeadline error")
+			gLog.e("SetReadDeadline error")
 			return nil, nil, nil, 0, err
 		}
 	}

-	result = make([]byte, 1024)
-	len, ra, err = conn.ReadFrom(result)
+	buff = make([]byte, 1024)
+	length, ra, err = conn.ReadFrom(buff)
 	if err != nil {
 		// gLog.Println(LevelDEBUG, "ReadFrom error")
 		return nil, nil, nil, 0, err
 	}
 	head = &openP2PHeader{}
-	err = binary.Read(bytes.NewReader(result[:openP2PHeaderSize]), binary.LittleEndian, head)
+	err = binary.Read(bytes.NewReader(buff[:openP2PHeaderSize]), binary.LittleEndian, head)
 	if err != nil {
-		gLog.Println(LvERROR, "parse p2pheader error:", err)
+		gLog.e("parse p2pheader error:%s", err)
 		return nil, nil, nil, 0, err
 	}
+	if head.DataLen > uint32(len(buff)-openP2PHeaderSize) {
+		gLog.e("parse p2pheader error:%d", ErrHeaderDataLen)
+		return nil, nil, nil, 0, ErrHeaderDataLen
+	}
 	return
 }
--- a/core/underlay.go
+++ b/core/underlay.go
@@ -1,16 +1,68 @@
 package openp2p

 import (
+	"io"
+	"net"
 	"time"
 )

 type underlay interface {
+	Read([]byte) (int, error)
+	Write([]byte) (int, error)
 	ReadBuffer() (*openP2PHeader, []byte, error)
 	WriteBytes(uint16, uint16, []byte) error
 	WriteBuffer([]byte) error
 	WriteMessage(uint16, uint16, interface{}) error
 	Close() error
+	WLock()
+	WUnlock()
 	SetReadDeadline(t time.Time) error
 	SetWriteDeadline(t time.Time) error
 	Protocol() string
+	RemoteAddr() net.Addr
+}
+
+func DefaultReadBuffer(ul underlay) (*openP2PHeader, []byte, error) {
+	headBuf := make([]byte, openP2PHeaderSize)
+	_, err := io.ReadFull(ul, headBuf)
+	if err != nil {
+		return nil, nil, err
+	}
+	head, err := decodeHeader(headBuf)
+	if err != nil || head.MainType > 16 {
+		gLog.d("DefaultReadBuffer error:%v, %d", err, head.MainType)
+		return nil, nil, err
+	}
+	dataBuf := make([]byte, head.DataLen)
+	_, err = io.ReadFull(ul, dataBuf)
+	return head, dataBuf, err
+}
+
+func DefaultWriteBytes(ul underlay, mainType, subType uint16, data []byte) error {
+	writeBytes := append(encodeHeader(mainType, subType, uint32(len(data))), data...)
+	ul.SetWriteDeadline(time.Now().Add(TunnelHeartbeatTime / 2))
+	ul.WLock()
+	err := writeFull(ul, writeBytes)
+	ul.WUnlock()
+	return err
+}
+
+func DefaultWriteBuffer(ul underlay, data []byte) error {
+	ul.SetWriteDeadline(time.Now().Add(TunnelHeartbeatTime / 2))
+	ul.WLock()
+	err := writeFull(ul, data)
+	ul.WUnlock()
+	return err
+}
+
+func DefaultWriteMessage(ul underlay, mainType uint16, subType uint16, packet interface{}) error {
+	writeBytes, err := newMessage(mainType, subType, packet)
+	if err != nil {
+		return err
+	}
+	ul.SetWriteDeadline(time.Now().Add(TunnelHeartbeatTime / 2))
+	ul.WLock()
+	err = writeFull(ul, writeBytes)
+	ul.WUnlock()
+	return err
 }
--- a/core/underlay_kcp.go-
+++ b/core/underlay_kcp.go-
@@ -0,0 +1,95 @@
+package openp2p
+
+import (
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/xtaci/kcp-go/v5"
+)
+
+type underlayKCP struct {
+	listener *kcp.Listener
+	writeMtx *sync.Mutex
+	*kcp.UDPSession
+}
+
+func (conn *underlayKCP) Protocol() string {
+	return "kcp"
+}
+
+func (conn *underlayKCP) ReadBuffer() (*openP2PHeader, []byte, error) {
+	return DefaultReadBuffer(conn)
+}
+
+func (conn *underlayKCP) WriteBytes(mainType uint16, subType uint16, data []byte) error {
+	return DefaultWriteBytes(conn, mainType, subType, data)
+}
+
+func (conn *underlayKCP) WriteBuffer(data []byte) error {
+	return DefaultWriteBuffer(conn, data)
+}
+
+func (conn *underlayKCP) WriteMessage(mainType uint16, subType uint16, packet interface{}) error {
+	return DefaultWriteMessage(conn, mainType, subType, packet)
+}
+
+func (conn *underlayKCP) Close() error {
+	conn.UDPSession.Close()
+	return nil
+}
+func (conn *underlayKCP) WLock() {
+	conn.writeMtx.Lock()
+}
+func (conn *underlayKCP) WUnlock() {
+	conn.writeMtx.Unlock()
+}
+func (conn *underlayKCP) CloseListener() {
+	if conn.listener != nil {
+		conn.listener.Close()
+	}
+}
+
+func (conn *underlayKCP) Accept() error {
+	kConn, err := conn.listener.AcceptKCP()
+	if err != nil {
+		conn.listener.Close()
+		return err
+	}
+	kConn.SetNoDelay(0, 40, 0, 0)
+	kConn.SetWindowSize(512, 512)
+	kConn.SetWriteBuffer(1024 * 128)
+	kConn.SetReadBuffer(1024 * 128)
+	conn.UDPSession = kConn
+	return nil
+}
+
+func listenKCP(addr string, idleTimeout time.Duration) (*underlayKCP, error) {
+	gLog.d("kcp listen on %s", addr)
+	listener, err := kcp.ListenWithOptions(addr, nil, 0, 0)
+	if err != nil {
+		return nil, fmt.Errorf("quic.ListenAddr error:%s", err)
+	}
+	ul := &underlayKCP{listener: listener, writeMtx: &sync.Mutex{}}
+	err = ul.Accept()
+	if err != nil {
+		ul.CloseListener()
+		return nil, fmt.Errorf("accept KCP error:%s", err)
+	}
+	return ul, nil
+}
+
+func dialKCP(conn *net.UDPConn, remoteAddr *net.UDPAddr, idleTimeout time.Duration) (*underlayKCP, error) {
+	conn.SetDeadline(time.Now().Add(idleTimeout))
+	kConn, err := kcp.NewConn(remoteAddr.String(), nil, 0, 0, conn)
+	if err != nil {
+		return nil, fmt.Errorf("quic.DialContext error:%s", err)
+	}
+	kConn.SetNoDelay(0, 40, 0, 0)
+	kConn.SetWindowSize(512, 512)
+	kConn.SetWriteBuffer(1024 * 128)
+	kConn.SetReadBuffer(1024 * 128)
+	ul := &underlayKCP{nil, &sync.Mutex{}, kConn}
+	return ul, nil
+}
--- a/core/underlay_quic.go
+++ b/core/underlay_quic.go
@@ -6,19 +6,17 @@ import (
 	"crypto/rsa"
 	"crypto/tls"
 	"crypto/x509"
-	"encoding/json"
 	"encoding/pem"
 	"fmt"
-	"io"
 	"math/big"
 	"net"
 	"sync"
 	"time"

-	"github.com/lucas-clemente/quic-go"
+	"github.com/quic-go/quic-go"
 )

-//quic.DialContext do not support version 44,disable it
+// quic.DialContext do not support version 44,disable it
 var quicVersion []quic.VersionNumber

 type underlayQUIC struct {
@@ -33,53 +31,33 @@ func (conn *underlayQUIC) Protocol() string {
 }

 func (conn *underlayQUIC) ReadBuffer() (*openP2PHeader, []byte, error) {
-	headBuf := make([]byte, openP2PHeaderSize)
-	_, err := io.ReadFull(conn, headBuf)
-	if err != nil {
-		return nil, nil, err
-	}
-	head, err := decodeHeader(headBuf)
-	if err != nil {
-		return nil, nil, err
-	}
-	dataBuf := make([]byte, head.DataLen)
-	_, err = io.ReadFull(conn, dataBuf)
-	return head, dataBuf, err
+	return DefaultReadBuffer(conn)
 }

 func (conn *underlayQUIC) WriteBytes(mainType uint16, subType uint16, data []byte) error {
-	writeBytes := append(encodeHeader(mainType, subType, uint32(len(data))), data...)
-	conn.writeMtx.Lock()
-	_, err := conn.Write(writeBytes)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteBytes(conn, mainType, subType, data)
 }

 func (conn *underlayQUIC) WriteBuffer(data []byte) error {
-	conn.writeMtx.Lock()
-	_, err := conn.Write(data)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteBuffer(conn, data)
 }

 func (conn *underlayQUIC) WriteMessage(mainType uint16, subType uint16, packet interface{}) error {
-	// TODO: call newMessage
-	data, err := json.Marshal(packet)
-	if err != nil {
-		return err
-	}
-	writeBytes := append(encodeHeader(mainType, subType, uint32(len(data))), data...)
-	conn.writeMtx.Lock()
-	_, err = conn.Write(writeBytes)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteMessage(conn, mainType, subType, packet)
 }

 func (conn *underlayQUIC) Close() error {
 	conn.Stream.CancelRead(1)
 	conn.Connection.CloseWithError(0, "")
+	conn.CloseListener()
 	return nil
 }
+func (conn *underlayQUIC) WLock() {
+	conn.writeMtx.Lock()
+}
+func (conn *underlayQUIC) WUnlock() {
+	conn.writeMtx.Unlock()
+}
 func (conn *underlayQUIC) CloseListener() {
 	if conn.listener != nil {
 		conn.listener.Close()
@@ -87,7 +65,7 @@ func (conn *underlayQUIC) CloseListener() {
 }

 func (conn *underlayQUIC) Accept() error {
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
+	ctx, cancel := context.WithTimeout(context.Background(), UnderlayConnectTimeout)
 	defer cancel()
 	sess, err := conn.listener.Accept(ctx)
 	if err != nil {
@@ -103,22 +81,30 @@ func (conn *underlayQUIC) Accept() error {
 }

 func listenQuic(addr string, idleTimeout time.Duration) (*underlayQUIC, error) {
-	gLog.Println(LvDEBUG, "quic listen on ", addr)
+	gLog.d("quic listen on %s", addr)
 	listener, err := quic.ListenAddr(addr, generateTLSConfig(),
 		&quic.Config{Versions: quicVersion, MaxIdleTimeout: idleTimeout, DisablePathMTUDiscovery: true})
 	if err != nil {
 		return nil, fmt.Errorf("quic.ListenAddr error:%s", err)
 	}
-	return &underlayQUIC{listener: listener, writeMtx: &sync.Mutex{}}, nil
+	ul := &underlayQUIC{listener: listener, writeMtx: &sync.Mutex{}}
+	err = ul.Accept()
+	if err != nil {
+		ul.CloseListener()
+		return nil, fmt.Errorf("accept quic error:%s", err)
+	}
+	return ul, nil
 }

-func dialQuic(conn *net.UDPConn, remoteAddr *net.UDPAddr, idleTimeout time.Duration) (*underlayQUIC, error) {
+func dialQuic(conn *net.UDPConn, remoteAddr *net.UDPAddr, timeout time.Duration) (*underlayQUIC, error) {
 	tlsConf := &tls.Config{
 		InsecureSkipVerify: true,
 		NextProtos:         []string{"openp2pv1"},
 	}
-	Connection, err := quic.DialContext(context.Background(), conn, remoteAddr, conn.LocalAddr().String(), tlsConf,
-		&quic.Config{Versions: quicVersion, MaxIdleTimeout: idleTimeout, DisablePathMTUDiscovery: true})
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	Connection, err := quic.DialContext(ctx, conn, remoteAddr, conn.LocalAddr().String(), tlsConf,
+		&quic.Config{Versions: quicVersion, MaxIdleTimeout: TunnelIdleTimeout, DisablePathMTUDiscovery: true})
 	if err != nil {
 		return nil, fmt.Errorf("quic.DialContext error:%s", err)
 	}
--- a/core/underlay_tcp.go
+++ b/core/underlay_tcp.go
@@ -1,9 +1,8 @@
 package openp2p

 import (
-	"encoding/json"
+	"encoding/binary"
 	"fmt"
-	"io"
 	"net"
 	"sync"
 	"time"
@@ -14,6 +13,7 @@ import (
 type underlayTCP struct {
 	writeMtx *sync.Mutex
 	net.Conn
+	connectTime time.Time
 }

 func (conn *underlayTCP) Protocol() string {
@@ -21,88 +21,108 @@ func (conn *underlayTCP) Protocol() string {
 }

 func (conn *underlayTCP) ReadBuffer() (*openP2PHeader, []byte, error) {
-	headBuf := make([]byte, openP2PHeaderSize)
-	_, err := io.ReadFull(conn, headBuf)
-	if err != nil {
-		return nil, nil, err
-	}
-	head, err := decodeHeader(headBuf)
-	if err != nil {
-		return nil, nil, err
-	}
-	dataBuf := make([]byte, head.DataLen)
-	_, err = io.ReadFull(conn, dataBuf)
-	return head, dataBuf, err
+	return DefaultReadBuffer(conn)
 }

 func (conn *underlayTCP) WriteBytes(mainType uint16, subType uint16, data []byte) error {
-	writeBytes := append(encodeHeader(mainType, subType, uint32(len(data))), data...)
-	conn.writeMtx.Lock()
-	_, err := conn.Write(writeBytes)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteBytes(conn, mainType, subType, data)
 }

 func (conn *underlayTCP) WriteBuffer(data []byte) error {
-	conn.writeMtx.Lock()
-	_, err := conn.Write(data)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteBuffer(conn, data)
 }

 func (conn *underlayTCP) WriteMessage(mainType uint16, subType uint16, packet interface{}) error {
-	// TODO: call newMessage
-	data, err := json.Marshal(packet)
-	if err != nil {
-		return err
-	}
-	writeBytes := append(encodeHeader(mainType, subType, uint32(len(data))), data...)
-	conn.writeMtx.Lock()
-	_, err = conn.Write(writeBytes)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteMessage(conn, mainType, subType, packet)
 }

 func (conn *underlayTCP) Close() error {
 	return conn.Conn.Close()
 }
+func (conn *underlayTCP) WLock() {
+	conn.writeMtx.Lock()
+}
+func (conn *underlayTCP) WUnlock() {
+	conn.writeMtx.Unlock()
+}

-func listenTCP(host string, port int, localPort int, mode string) (*underlayTCP, error) {
-	if mode == LinkModeTCPPunch {
-		c, err := reuse.DialTimeout("tcp", fmt.Sprintf("0.0.0.0:%d", localPort), fmt.Sprintf("%s:%d", host, port), SymmetricHandshakeAckTimeout) // TODO: timeout
+func listenTCP(host string, port int, localPort int, mode string, t *P2PTunnel) (underlay, error) {
+	if mode == LinkModeTCPPunch || mode == LinkModeTCP6 {
+		if compareVersion(t.config.peerVersion, SyncServerTimeVersion) < 0 {
+			gLog.d("peer version %s less than %s", t.config.peerVersion, SyncServerTimeVersion)
+		} else {
+			ts := time.Duration(int64(t.punchTs) + GNetwork.dt - time.Now().UnixNano())
+			gLog.d("sleep %d ms", ts/time.Millisecond)
+			time.Sleep(ts)
+		}
+		// gLog.d(" send tcp punch: ", fmt.Sprintf("0.0.0.0:%d", localPort), "-->", fmt.Sprintf("%s:%d", host, port))
+		var c net.Conn
+		var err error
+		if mode == LinkModeTCPPunch {
+			c, err = reuse.DialTimeout("tcp", fmt.Sprintf("0.0.0.0:%d", localPort), fmt.Sprintf("%s:%d", host, port), CheckActiveTimeout)
+		} else {
+			c, err = reuse.DialTimeout("tcp6", fmt.Sprintf("[::]:%d", localPort), fmt.Sprintf("[%s]:%d", t.config.peerIPv6, port), CheckActiveTimeout)
+		}
 		if err != nil {
-			gLog.Println(LvDEBUG, "send tcp punch: ", err)
+			// gLog.d("send tcp punch: ", err)
 			return nil, err
 		}
-		return &underlayTCP{writeMtx: &sync.Mutex{}, Conn: c}, nil
+		utcp := &underlayTCP{writeMtx: &sync.Mutex{}, Conn: c}
+		_, buff, err := utcp.ReadBuffer()
+		if err != nil {
+			return nil, fmt.Errorf("read start msg error:%s", err)
+		}
+		if buff != nil {
+			gLog.d("handshake flag:%s", string(buff))
+		}
+		utcp.WriteBytes(MsgP2P, MsgTunnelHandshakeAck, buff)
+		return utcp, nil
 	}
-	addr, _ := net.ResolveTCPAddr("tcp", fmt.Sprintf("0.0.0.0:%d", localPort))
-	l, err := net.ListenTCP("tcp", addr)
-	if err != nil {
-		return nil, err
+	GNetwork.push(t.config.PeerNode, MsgPushUnderlayConnect, nil)
+	tid := t.id
+	if compareVersion(t.config.peerVersion, PublicIPVersion) < 0 { // old version
+		ipBytes := net.ParseIP(t.config.peerIP).To4()
+		tid = uint64(binary.BigEndian.Uint32(ipBytes))
+		gLog.d("compatible with old client, use ip as key:%d", tid)
 	}
-	l.SetDeadline(time.Now().Add(SymmetricHandshakeAckTimeout))
-	c, err := l.Accept()
-	defer l.Close()
-	if err != nil {
-		return nil, err
+	var ul underlay
+	if v4l != nil {
+		ul = v4l.getUnderlay(tid)
 	}
-	return &underlayTCP{writeMtx: &sync.Mutex{}, Conn: c}, nil
+	if ul == nil {
+		return nil, ErrConnectPublicV4
+	}
+	return ul, nil
 }

 func dialTCP(host string, port int, localPort int, mode string) (*underlayTCP, error) {
 	var c net.Conn
 	var err error
-	if mode == LinkModeTCPPunch {
-		c, err = reuse.DialTimeout("tcp", fmt.Sprintf("0.0.0.0:%d", localPort), fmt.Sprintf("%s:%d", host, port), SymmetricHandshakeAckTimeout)
-	} else {
-		c, err = net.DialTimeout("tcp", fmt.Sprintf("%s:%d", host, port), SymmetricHandshakeAckTimeout)
+	network := "tcp"
+	localAddr := fmt.Sprintf("0.0.0.0:%d", localPort)
+	remoteAddr := fmt.Sprintf("%s:%d", host, port)
+	if mode == LinkModeTCP6 { // address need [ip]
+		network = "tcp6"
+		localAddr = fmt.Sprintf("[::]:%d", localPort)
+		remoteAddr = fmt.Sprintf("[%s]:%d", host, port)
+	}
+	if mode == LinkModeTCP4 || mode == LinkModeIntranet { // random port
+		localAddr = fmt.Sprintf("0.0.0.0:%d", 0)
+	}
+	gLog.dev("send tcp punch: %s --> %s", localAddr, remoteAddr)
+
+	c, err = reuse.DialTimeout(network, localAddr, remoteAddr, CheckActiveTimeout)
+	if err != nil {
+		gLog.dev("send tcp punch: %v", err)
 	}

 	if err != nil {
-		gLog.Printf(LvERROR, "Dial %s:%d error:%s", host, port, err)
+		gLog.dev("Dial %s:%d error:%s", host, port, err)
 		return nil, err
 	}
-	gLog.Printf(LvDEBUG, "Dial %s:%d OK", host, port)
+	tc := c.(*net.TCPConn)
+	tc.SetKeepAlive(true)
+	tc.SetKeepAlivePeriod(UnderlayTCPKeepalive)
+	gLog.d("Dial %s:%d OK", host, port)
 	return &underlayTCP{writeMtx: &sync.Mutex{}, Conn: c}, nil
 }
--- a/core/underlay_tcp6.go
+++ b/core/underlay_tcp6.go
@@ -1,16 +1,13 @@
 package openp2p

 import (
-	"encoding/json"
 	"fmt"
-	"io"
 	"net"
 	"sync"
 	"time"
 )

 type underlayTCP6 struct {
-	listener net.Listener
 	writeMtx *sync.Mutex
 	net.Conn
 }
@@ -20,60 +17,38 @@ func (conn *underlayTCP6) Protocol() string {
 }

 func (conn *underlayTCP6) ReadBuffer() (*openP2PHeader, []byte, error) {
-	headBuf := make([]byte, openP2PHeaderSize)
-	_, err := io.ReadFull(conn, headBuf)
-	if err != nil {
-		return nil, nil, err
-	}
-	head, err := decodeHeader(headBuf)
-	if err != nil {
-		return nil, nil, err
-	}
-	dataBuf := make([]byte, head.DataLen)
-	_, err = io.ReadFull(conn, dataBuf)
-	return head, dataBuf, err
+	return DefaultReadBuffer(conn)
 }

 func (conn *underlayTCP6) WriteBytes(mainType uint16, subType uint16, data []byte) error {
-	writeBytes := append(encodeHeader(mainType, subType, uint32(len(data))), data...)
-	conn.writeMtx.Lock()
-	_, err := conn.Write(writeBytes)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteBytes(conn, mainType, subType, data)
 }

 func (conn *underlayTCP6) WriteBuffer(data []byte) error {
-	conn.writeMtx.Lock()
-	_, err := conn.Write(data)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteBuffer(conn, data)
 }

 func (conn *underlayTCP6) WriteMessage(mainType uint16, subType uint16, packet interface{}) error {
-	// TODO: call newMessage
-	data, err := json.Marshal(packet)
-	if err != nil {
-		return err
-	}
-	writeBytes := append(encodeHeader(mainType, subType, uint32(len(data))), data...)
-	conn.writeMtx.Lock()
-	_, err = conn.Write(writeBytes)
-	conn.writeMtx.Unlock()
-	return err
+	return DefaultWriteMessage(conn, mainType, subType, packet)
 }

 func (conn *underlayTCP6) Close() error {
 	return conn.Conn.Close()
 }
-
-func listenTCP6(port int, idleTimeout time.Duration) (*underlayTCP6, error) {
+func (conn *underlayTCP6) WLock() {
+	conn.writeMtx.Lock()
+}
+func (conn *underlayTCP6) WUnlock() {
+	conn.writeMtx.Unlock()
+}
+func listenTCP6(port int, timeout time.Duration) (*underlayTCP6, error) {
 	addr, _ := net.ResolveTCPAddr("tcp6", fmt.Sprintf("[::]:%d", port))
 	l, err := net.ListenTCP("tcp6", addr)
 	if err != nil {
 		return nil, err
 	}
 	defer l.Close()
-	l.SetDeadline(time.Now().Add(SymmetricHandshakeAckTimeout))
+	l.SetDeadline(time.Now().Add(timeout))
 	c, err := l.Accept()
 	defer l.Close()
 	if err != nil {
@@ -83,7 +58,7 @@ func listenTCP6(port int, idleTimeout time.Duration) (*underlayTCP6, error) {
 }

 func dialTCP6(host string, port int) (*underlayTCP6, error) {
-	c, err := net.DialTimeout("tcp6", fmt.Sprintf("[%s]:%d", host, port), SymmetricHandshakeAckTimeout)
+	c, err := net.DialTimeout("tcp6", fmt.Sprintf("[%s]:%d", host, port), UnderlayConnectTimeout)
 	if err != nil {
 		gLog.Printf(LvERROR, "Dial %s:%d error:%s", host, port, err)
 		return nil, err
--- a/core/underlay_tcp_test.go
+++ b/core/underlay_tcp_test.go
@@ -0,0 +1,17 @@
+package openp2p
+
+import (
+	"testing"
+)
+
+func TestDialTCP(t *testing.T) {
+	InitForUnitTest(LvDEBUG)
+	// ul, err := dialTCP("[240e:3b1:6f6:d14:1c0b:9605:554d:351c]", 3389, 0, LinkModeTCP6)
+	// if err != nil || ul == nil {
+	// 	t.Error("dialTCP error:", err)
+	// }
+	ul, err := dialTCP("192.168.3.9", 3389, 0, LinkModeTCP6)
+	if err != nil || ul == nil {
+		t.Error("dialTCP error:", err)
+	}
+}
--- a/core/update.go
+++ b/core/update.go
@@ -1,193 +1,260 @@
-package openp2p
-
-import (
-	"archive/tar"
-	"archive/zip"
-	"compress/gzip"
-	"crypto/tls"
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"os"
-	"path/filepath"
-	"runtime"
-	"time"
-)
-
-func update(host string, port int) {
-	gLog.Println(LvINFO, "update start")
-	defer gLog.Println(LvINFO, "update end")
-	c := http.Client{
-		Transport: &http.Transport{
-			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
-		},
-		Timeout: time.Second * 30,
-	}
-	goos := runtime.GOOS
-	goarch := runtime.GOARCH
-	rsp, err := c.Get(fmt.Sprintf("https://%s:%d/api/v1/update?fromver=%s&os=%s&arch=%s", host, port, OpenP2PVersion, goos, goarch))
-	if err != nil {
-		gLog.Println(LvERROR, "update:query update list failed:", err)
-		return
-	}
-	defer rsp.Body.Close()
-	if rsp.StatusCode != http.StatusOK {
-		gLog.Println(LvERROR, "get update info error:", rsp.Status)
-		return
-	}
-	rspBuf, err := ioutil.ReadAll(rsp.Body)
-	if err != nil {
-		gLog.Println(LvERROR, "update:read update list failed:", err)
-		return
-	}
-	updateInfo := UpdateInfo{}
-	err = json.Unmarshal(rspBuf, &updateInfo)
-	if err != nil {
-		gLog.Println(LvERROR, rspBuf, " update info decode error:", err)
-		return
-	}
-	if updateInfo.Error != 0 {
-		gLog.Println(LvERROR, "update error:", updateInfo.Error, updateInfo.ErrorDetail)
-		return
-	}
-	err = updateFile(updateInfo.Url, "", "openp2p")
-	if err != nil {
-		gLog.Println(LvERROR, "update: download failed:", err)
-		return
-	}
-}
-
-// todo rollback on error
-func updateFile(url string, checksum string, dst string) error {
-	gLog.Println(LvINFO, "download ", url)
-	tmpFile := filepath.Dir(os.Args[0]) + "/openp2p.tmp"
-	output, err := os.OpenFile(tmpFile, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0776)
-	if err != nil {
-		gLog.Printf(LvERROR, "OpenFile %s error:%s", tmpFile, err)
-		return err
-	}
-	tr := &http.Transport{
-		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
-	}
-	client := &http.Client{Transport: tr}
-	response, err := client.Get(url)
-	if err != nil {
-		gLog.Printf(LvERROR, "download url %s error:%s", url, err)
-		output.Close()
-		return err
-	}
-	defer response.Body.Close()
-	n, err := io.Copy(output, response.Body)
-	if err != nil {
-		gLog.Printf(LvERROR, "io.Copy error:%s", err)
-		output.Close()
-		return err
-	}
-	output.Sync()
-	output.Close()
-	gLog.Println(LvINFO, "download ", url, " ok")
-	gLog.Printf(LvINFO, "size: %d bytes", n)
-
-	err = os.Rename(os.Args[0], os.Args[0]+"0")
-	if err != nil && os.IsExist(err) {
-		gLog.Printf(LvINFO, " rename %s error:%s", os.Args[0], err)
-	}
-	// extract
-	gLog.Println(LvINFO, "extract files")
-	err = extract(filepath.Dir(os.Args[0]), tmpFile)
-	if err != nil {
-		gLog.Printf(LvERROR, "extract error:%s. revert rename", err)
-		os.Rename(os.Args[0]+"0", os.Args[0])
-		return err
-	}
-	os.Remove(tmpFile)
-	return nil
-}
-
-func extract(dst, src string) (err error) {
-	if runtime.GOOS == "windows" {
-		return unzip(dst, src)
-	} else {
-		return extractTgz(dst, src)
-	}
-}
-
-func unzip(dst, src string) (err error) {
-	archive, err := zip.OpenReader(src)
-	if err != nil {
-		return err
-	}
-	defer archive.Close()
-
-	for _, f := range archive.File {
-		filePath := filepath.Join(dst, f.Name)
-		fmt.Println("unzipping file ", filePath)
-		if f.FileInfo().IsDir() {
-			fmt.Println("creating directory...")
-			os.MkdirAll(filePath, os.ModePerm)
-			continue
-		}
-		if err := os.MkdirAll(filepath.Dir(filePath), os.ModePerm); err != nil {
-			return err
-		}
-		dstFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
-		if err != nil {
-			return err
-		}
-		fileInArchive, err := f.Open()
-		if err != nil {
-			return err
-		}
-		if _, err := io.Copy(dstFile, fileInArchive); err != nil {
-			return err
-		}
-		dstFile.Close()
-		fileInArchive.Close()
-	}
-	return nil
-}
-
-func extractTgz(dst, src string) error {
-	gzipStream, err := os.Open(src)
-	if err != nil {
-		return err
-	}
-	uncompressedStream, err := gzip.NewReader(gzipStream)
-	if err != nil {
-		return err
-	}
-	tarReader := tar.NewReader(uncompressedStream)
-	for {
-		header, err := tarReader.Next()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			return err
-		}
-		switch header.Typeflag {
-		case tar.TypeDir:
-			if err := os.Mkdir(header.Name, 0755); err != nil {
-				return err
-			}
-		case tar.TypeReg:
-			filePath := filepath.Join(dst, header.Name)
-			outFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, os.FileMode(header.Mode))
-			if err != nil {
-				return err
-			}
-			if err != nil {
-				return err
-			}
-			defer outFile.Close()
-			if _, err := io.Copy(outFile, tarReader); err != nil {
-				return err
-			}
-		default:
-			return err
-		}
-	}
-	return nil
-}
+package openp2p
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"compress/gzip"
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"runtime"
+	"time"
+)
+
+func update(host string, port int) error {
+	gLog.i("update start")
+	defer gLog.i("update end")
+	caCertPool, err := x509.SystemCertPool()
+	if err != nil {
+		gLog.e("Failed to load system root CAs:%s", err)
+		caCertPool = x509.NewCertPool()
+	}
+	caCertPool.AppendCertsFromPEM([]byte(rootCA))
+	caCertPool.AppendCertsFromPEM([]byte(rootEdgeCA))
+	caCertPool.AppendCertsFromPEM([]byte(ISRGRootX1))
+
+	c := http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{RootCAs: caCertPool,
+				InsecureSkipVerify: gConf.TLSInsecureSkipVerify},
+		},
+		Timeout: time.Second * 30,
+	}
+	goos := runtime.GOOS
+	goarch := runtime.GOARCH
+	rsp, err := c.Get(fmt.Sprintf("https://%s:%d/api/v1/update?fromver=%s&os=%s&arch=%s&user=%s&node=%s", host, port, OpenP2PVersion, goos, goarch, url.QueryEscape(gConf.Network.User), url.QueryEscape(gConf.Network.Node)))
+	if err != nil {
+		gLog.e("update:query update list failed:%s", err)
+		return err
+	}
+	defer rsp.Body.Close()
+	if rsp.StatusCode != http.StatusOK {
+		gLog.e("get update info error:%s", rsp.Status)
+		return err
+	}
+	rspBuf, err := io.ReadAll(rsp.Body)
+	if err != nil {
+		gLog.e("update:read update list failed:%s", err)
+		return err
+	}
+	updateInfo := UpdateInfo{}
+	if err = json.Unmarshal(rspBuf, &updateInfo); err != nil {
+		gLog.e("%s update info decode error:%s", string(rspBuf), err)
+		return err
+	}
+	if updateInfo.Error != 0 {
+		gLog.e("update error:%d,%s", updateInfo.Error, updateInfo.ErrorDetail)
+		return err
+	}
+	err = updateFile(updateInfo.Url, "", "openp2p")
+	if err != nil {
+		gLog.e("update: download failed:%s, retry...", err)
+		err = updateFile(updateInfo.Url2, "", "openp2p")
+		if err != nil {
+			gLog.e("update: download failed:%s", err)
+			return err
+		}
+	}
+	return nil
+}
+
+func downloadFile(url string, checksum string, dstFile string) error {
+	output, err := os.OpenFile(dstFile, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0776)
+	if err != nil {
+		gLog.e("OpenFile %s error:%s", dstFile, err)
+		return err
+	}
+	caCertPool, err := x509.SystemCertPool()
+	if err != nil {
+		gLog.e("Failed to load system root CAs:%s", err)
+		caCertPool = x509.NewCertPool()
+	}
+	caCertPool.AppendCertsFromPEM([]byte(rootCA))
+	caCertPool.AppendCertsFromPEM([]byte(rootEdgeCA))
+	caCertPool.AppendCertsFromPEM([]byte(ISRGRootX1))
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{
+			RootCAs:            caCertPool,
+			InsecureSkipVerify: gConf.TLSInsecureSkipVerify},
+	}
+	client := &http.Client{Transport: tr,
+		Timeout: 60 * time.Second}
+	response, err := client.Get(url)
+	if err != nil {
+		gLog.e("download url %s error:%s", url, err)
+		output.Close()
+		return err
+	}
+	defer response.Body.Close()
+	n, err := io.Copy(output, response.Body)
+	if err != nil {
+		gLog.e("io.Copy error:%s", err)
+		output.Close()
+		return err
+	}
+	output.Sync()
+	output.Close()
+	gLog.i("download %s ok", url)
+	gLog.i("size: %d bytes", n)
+	return nil
+}
+
+func updateFile(url string, checksum string, dst string) error {
+	gLog.i("download %s", url)
+	tempDir := os.TempDir()
+	tmpFile := filepath.Join(tempDir, "openp2p.tmp")
+	err := downloadFile(url, checksum, tmpFile)
+	if err != nil {
+		return err
+	}
+	backupBase := filepath.Base(os.Args[0])
+	var backupFile string
+	if runtime.GOOS == "windows" {
+		backupFile = filepath.Join(tempDir, backupBase+"0")
+	} else {
+		backupFile = os.Args[0] + "0" // linux can not mv running executable to /tmp, because they are different volumns
+	}
+	gLog.i("backup file %s --> %s", os.Args[0], backupFile)
+	err = moveFile(os.Args[0], backupFile)
+	if err != nil {
+		if runtime.GOOS == "windows" {
+			backupFile = filepath.Join(tempDir, backupBase+"1")
+		} else {
+			backupFile = os.Args[0] + "1" // 1st update will mv deamon process to 0, 2nd update mv to 0 will failed, mv to 1
+		}
+		gLog.i("backup file %s --> %s", os.Args[0], backupFile)
+		err = moveFile(os.Args[0], backupFile)
+		if err != nil {
+			gLog.e(" rename %s error:%s", os.Args[0], err)
+			return err
+		}
+	}
+	// extract
+	gLog.i("extract files")
+	err = extract(filepath.Dir(os.Args[0]), tmpFile)
+	if err != nil {
+		gLog.e("extract error:%s. revert rename", err)
+		moveFile(backupFile, os.Args[0])
+		return err
+	}
+	os.Remove(tmpFile)
+	return nil
+}
+
+func extract(dst, src string) (err error) {
+	if runtime.GOOS == "windows" {
+		return unzip(dst, src)
+	} else {
+		return extractTgz(dst, src)
+	}
+}
+
+func unzip(dst, src string) (err error) {
+	archive, err := zip.OpenReader(src)
+	if err != nil {
+		return err
+	}
+	defer archive.Close()
+
+	for _, f := range archive.File {
+		filePath := filepath.Join(dst, f.Name)
+		fmt.Println("unzipping file ", filePath)
+		if f.FileInfo().IsDir() {
+			fmt.Println("creating directory...")
+			os.MkdirAll(filePath, os.ModePerm)
+			continue
+		}
+		if err := os.MkdirAll(filepath.Dir(filePath), os.ModePerm); err != nil {
+			return err
+		}
+		dstFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
+		if err != nil {
+			return err
+		}
+		fileInArchive, err := f.Open()
+		if err != nil {
+			return err
+		}
+		if _, err := io.Copy(dstFile, fileInArchive); err != nil {
+			return err
+		}
+		dstFile.Close()
+		fileInArchive.Close()
+	}
+	return nil
+}
+
+func extractTgz(dst, src string) error {
+	gzipStream, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	uncompressedStream, err := gzip.NewReader(gzipStream)
+	if err != nil {
+		return err
+	}
+	tarReader := tar.NewReader(uncompressedStream)
+	for {
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+		switch header.Typeflag {
+		case tar.TypeDir:
+			if err := os.Mkdir(header.Name, 0755); err != nil {
+				return err
+			}
+		case tar.TypeReg:
+			filePath := filepath.Join(dst, header.Name)
+			outFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, os.FileMode(header.Mode))
+			if err != nil {
+				return err
+			}
+			defer outFile.Close()
+			if _, err := io.Copy(outFile, tarReader); err != nil {
+				return err
+			}
+		default:
+			return err
+		}
+	}
+	return nil
+}
+
+func cleanTempFiles() {
+	tempDir := os.TempDir()
+	backupBase := filepath.Base(os.Args[0])
+	for i := 0; i < 2; i++ {
+		tmpFile := fmt.Sprintf("%s%d", os.Args[0], i)
+		if _, err := os.Stat(tmpFile); err == nil {
+			if err := os.Remove(tmpFile); err != nil {
+				gLog.d(" remove %s error:%s", tmpFile, err)
+			}
+		}
+		tmpFile = fmt.Sprintf("%s%s%d", tempDir, backupBase, i)
+		if _, err := os.Stat(tmpFile); err == nil {
+			if err := os.Remove(tmpFile); err != nil {
+				gLog.d(" remove %s error:%s", tmpFile, err)
+			}
+		}
+	}
+}
--- a/core/upnp.go
+++ b/core/upnp.go
@@ -5,6 +5,7 @@ package openp2p

 import (
 	"bytes"
+	"crypto/tls"
 	"encoding/xml"
 	"errors"
 	"fmt"
@@ -62,13 +63,15 @@ func Discover() (nat NAT, err error) {
 			return
 		}
 		var n int
+		socket.SetDeadline(time.Now().Add(3 * time.Second))
 		_, _, err = socket.ReadFromUDP(answerBytes)
 		if err != nil {
-			gLog.Println(LvDEBUG, "UPNP discover error:", err)
+			gLog.d("UPNP discover error:%s", err)
 			return
 		}

 		for {
+			socket.SetDeadline(time.Now().Add(3 * time.Second))
 			n, _, err = socket.ReadFromUDP(answerBytes)
 			if err != nil {
 				break
@@ -181,7 +184,12 @@ func localIPv4() string { // TODO: multi nic will wrong
 }

 func getServiceURL(rootURL string) (url, urnDomain string, err error) {
-	r, err := http.Get(rootURL)
+	client := &http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+		},
+		Timeout: time.Second * 3}
+	r, err := client.Get(rootURL)
 	if err != nil {
 		return
 	}
@@ -260,7 +268,11 @@ func soapRequest(url, function, message, domain string) (r *http.Response, err e

 	// log.Stderr("soapRequest ", req)

-	r, err = http.DefaultClient.Do(req)
+	client := &http.Client{
+		Timeout: 3 * time.Second,
+	}
+
+	r, err = client.Do(req)
 	if err != nil {
 		return nil, err
 	}
@@ -352,11 +364,6 @@ func (n *upnpNAT) AddPortMapping(protocol string, externalPort, internalPort int
 		return
 	}

-	// TODO: check response to see if the port was forwarded
-	// log.Println(message, response)
-	// JAE:
-	// body, err := ioutil.ReadAll(response.Body)
-	// fmt.Println(string(body), err)
 	mappedExternalPort = externalPort
 	_ = response
 	return
@@ -378,8 +385,6 @@ func (n *upnpNAT) DeletePortMapping(protocol string, externalPort, internalPort
 		return
 	}

-	// TODO: check response to see if the port was deleted
-	// log.Println(message, response)
 	_ = response
 	return
 }
--- a/core/util_darwin.go
+++ b/core/util_darwin.go
@@ -5,9 +5,12 @@ import (
 	"syscall"
 )

-const (
+var (
 	defaultInstallPath = "/usr/local/openp2p"
-	defaultBinName     = "openp2p"
+)
+
+const (
+	defaultBinName = "openp2p"
 )

 func getOsName() (osName string) {
--- a/core/util_freebsd.go
+++ b/core/util_freebsd.go
@@ -5,14 +5,16 @@ import (
 	"bytes"
 	"io/ioutil"
 	"os"
-	"runtime"
 	"strings"
 	"syscall"
 )

-const (
+var (
 	defaultInstallPath = "/usr/local/openp2p"
-	defaultBinName     = "openp2p"
+)
+
+const (
+	defaultBinName = "openp2p"
 )

 func getOsName() (osName string) {
--- a/core/util_linux.go
+++ b/core/util_linux.go
@@ -10,9 +10,12 @@ import (
 	"syscall"
 )

-const (
+var (
 	defaultInstallPath = "/usr/local/openp2p"
-	defaultBinName     = "openp2p"
+)
+
+const (
+	defaultBinName = "openp2p"
 )

 func getOsName() (osName string) {
--- a/core/util_windows.go
+++ b/core/util_windows.go
@@ -5,14 +5,18 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strconv"
 	"strings"

 	"golang.org/x/sys/windows/registry"
 )

-const (
+var (
 	defaultInstallPath = "C:\\Program Files\\OpenP2P"
-	defaultBinName     = "openp2p.exe"
+)
+
+const (
+	defaultBinName = "openp2p.exe"
 )

 func getOsName() (osName string) {
@@ -23,6 +27,17 @@ func getOsName() (osName string) {
 	defer k.Close()
 	pn, _, err := k.GetStringValue("ProductName")
 	if err == nil {
+		currentBuild, _, err := k.GetStringValue("CurrentBuild")
+		if err != nil {
+			return
+		}
+		buildNumber, err := strconv.Atoi(currentBuild)
+		if err != nil {
+			return
+		}
+		if buildNumber >= 22000 {
+			pn = strings.Replace(pn, "Windows 10", "Windows 11", 1)
+		}
 		osName = pn
 	}
 	return
@@ -35,7 +50,7 @@ func setRLimit() error {
 func setFirewall() {
 	fullPath, err := filepath.Abs(os.Args[0])
 	if err != nil {
-		gLog.Println(LvERROR, "add firewall error:", err)
+		gLog.e("add firewall error:%s", err)
 		return
 	}
 	isXP := false
--- a/core/v4listener.go
+++ b/core/v4listener.go
@@ -0,0 +1,157 @@
+package openp2p
+
+import (
+	"context"
+	"encoding/binary"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/quic-go/quic-go"
+)
+
+type v4Listener struct {
+	conns       sync.Map
+	port        int
+	acceptCh    chan bool
+	running     bool
+	tcpListener *net.TCPListener
+	udpListener quic.Listener
+	wg          sync.WaitGroup
+}
+
+func (vl *v4Listener) start() {
+	vl.running = true
+	v4l.acceptCh = make(chan bool, 500)
+	vl.wg.Add(1)
+	go func() {
+		defer vl.wg.Done()
+		for vl.running {
+			vl.listenTCP()
+			time.Sleep(UnderlayTCPConnectTimeout)
+		}
+	}()
+	vl.wg.Add(1)
+	go func() {
+		defer vl.wg.Done()
+		for vl.running {
+			vl.listenUDP()
+			time.Sleep(UnderlayTCPConnectTimeout)
+		}
+	}()
+}
+
+func (vl *v4Listener) stop() {
+	vl.running = false
+	if vl.tcpListener != nil {
+		vl.tcpListener.Close()
+	}
+	if vl.udpListener != nil {
+		vl.udpListener.Close()
+	}
+	vl.wg.Wait()
+}
+
+func (vl *v4Listener) listenTCP() error {
+	gLog.d("v4Listener listenTCP %d start", vl.port)
+	defer gLog.d("v4Listener listenTCP %d end", vl.port)
+	addr, _ := net.ResolveTCPAddr("tcp", fmt.Sprintf("0.0.0.0:%d", vl.port)) // system will auto listen both v4 and v6
+	var err error
+	vl.tcpListener, err = net.ListenTCP("tcp", addr)
+	if err != nil {
+		gLog.e("v4Listener listen %d error:", vl.port, err)
+		return err
+	}
+	defer vl.tcpListener.Close()
+	for {
+		c, err := vl.tcpListener.Accept()
+		if err != nil {
+			break
+		}
+		utcp := &underlayTCP{writeMtx: &sync.Mutex{}, Conn: c, connectTime: time.Now()}
+		go vl.handleConnection(utcp)
+	}
+	vl.tcpListener = nil
+	return nil
+}
+
+func (vl *v4Listener) listenUDP() error {
+	gLog.d("v4Listener listenUDP %d start", vl.port)
+	defer gLog.d("v4Listener listenUDP %d end", vl.port)
+	var err error
+	vl.udpListener, err = quic.ListenAddr(fmt.Sprintf("0.0.0.0:%d", vl.port), generateTLSConfig(),
+		&quic.Config{Versions: quicVersion, MaxIdleTimeout: TunnelIdleTimeout, DisablePathMTUDiscovery: true})
+	if err != nil {
+		return err
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), UnderlayConnectTimeout)
+	defer cancel()
+	defer vl.udpListener.Close()
+	for {
+		sess, err := vl.udpListener.Accept(context.Background())
+		if err != nil {
+			break
+		}
+		stream, err := sess.AcceptStream(ctx)
+		if err != nil {
+			break
+		}
+		ul := &underlayQUIC{writeMtx: &sync.Mutex{}, Stream: stream, Connection: sess}
+		go vl.handleConnection(ul)
+	}
+	vl.udpListener = nil
+	return err
+}
+
+func (vl *v4Listener) handleConnection(ul underlay) {
+	gLog.d("v4Listener accept connection: %s", ul.RemoteAddr().String())
+	ul.SetReadDeadline(time.Now().Add(UnderlayTCPConnectTimeout))
+	_, buff, err := ul.ReadBuffer()
+	if err != nil || buff == nil {
+		gLog.e("v4Listener read MsgTunnelHandshake error:%s", err)
+	}
+	ul.WriteBytes(MsgP2P, MsgTunnelHandshakeAck, buff)
+	var tid uint64
+	if string(buff) == "OpenP2P,hello" { // old client
+		// save remoteIP as key
+		remoteAddr := ul.RemoteAddr().(*net.TCPAddr).IP
+		ipBytes := remoteAddr.To4()
+		tid = uint64(binary.BigEndian.Uint32(ipBytes)) // bytes not enough for uint64
+		gLog.d("hello %s", string(buff))
+	} else {
+		if len(buff) < 8 {
+			return
+		}
+		tid = binary.LittleEndian.Uint64(buff[:8])
+		gLog.d("hello %d", tid)
+	}
+	// clear timeout connections
+	vl.conns.Range(func(idx, i interface{}) bool {
+		if ut, ok := i.(*underlayTCP); ok {
+			if ut.connectTime.Before(time.Now().Add(-UnderlayTCPConnectTimeout)) {
+				vl.conns.Delete(idx)
+			}
+		}
+		return true
+	})
+	vl.conns.Store(tid, ul)
+	select {
+	case vl.acceptCh <- true:
+	default:
+		gLog.e("msgQueue full, drop it")
+	}
+}
+
+func (vl *v4Listener) getUnderlay(tid uint64) underlay {
+	for i := 0; i < 100; i++ {
+		select {
+		case <-time.After(time.Millisecond * 50):
+		case <-vl.acceptCh:
+		}
+		if u, ok := vl.conns.LoadAndDelete(tid); ok {
+			return u.(underlay)
+		}
+	}
+	return nil
+}
--- a/doc/images/devices.png
+++ b/doc/images/devices.png
--- a/doc/images/devices_en.png
+++ b/doc/images/devices_en.png
--- a/doc/images/newapp.png
+++ b/doc/images/newapp.png
--- a/doc/images/newapp_en.png
+++ b/doc/images/newapp_en.png
--- a/doc/images/newappedit.png
+++ b/doc/images/newappedit.png
--- a/doc/images/newappedit_en.png
+++ b/doc/images/newappedit_en.png
--- a/doc/images/p2pappok.png
+++ b/doc/images/p2pappok.png
--- a/doc/images/p2pappok_en.png
+++ b/doc/images/p2pappok_en.png
--- a/doc/images/stillrun_en.png
+++ b/doc/images/stillrun_en.png
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -0,0 +1,14 @@
+FROM  alpine:3.18.2
+
+# Replace the default Alpine repositories with Aliyun mirrors
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories && \
+    apk add --no-cache ca-certificates iptables && \
+    rm -rf /tmp/* /var/tmp/* /var/cache/apk/* /var/cache/distfiles/*
+
+COPY get-client.sh /
+ARG VERSION
+LABEL version=${VERSION}
+# ARG DOCKER_VER="latest"
+RUN echo $TARGETPLATFORM && chmod +x /get-client.sh && ./get-client.sh
+
+ENTRYPOINT ["/usr/local/openp2p/openp2p"]
--- a/docker/get-client.sh
+++ b/docker/get-client.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+
+echo "Building version:${VERSION}"
+echo "Running on platform: $TARGETPLATFORM"
+# TARGETPLATFORM=$(echo $TARGETPLATFORM | tr ',' '/')
+echo "Running on platform: $TARGETPLATFORM"
+sysType="linux-amd64"
+		archType=$(uname -m)
+		if [[ $archType == aarch64 ]] ;
+		then
+		    sysType="linux-arm64"
+		elif  [[ $archType == arm* ]] ;
+		then
+			sysType="linux-arm"
+		elif  [[ $archType == i*86 ]] ;
+		then
+			sysType="linux-386"
+		elif  [[ $archType == mips ]] ;
+		then
+			sysType="linux-mipsle"
+			ls /lib |grep mipsel
+			if [[ $? -ne 0 ]]; then
+				# mipsel not found, it's mipseb
+				sysType="linux-mipsbe"
+			fi
+		fi
+url="https://console.openpxp.com/download/v1/${VERSION}/openp2p-${VERSION}.$sysType.tar.gz"
+echo "download $url start"
+
+if [ -f /usr/bin/curl ]; then
+	curl -k -o openp2p.tar.gz $url
+else
+  wget --no-check-certificate -O openp2p.tar.gz $url
+fi
+if [ $? -ne 0 ]; then
+	echo "download error $?"
+    exit 9
+fi
+echo "download ok"
+mkdir -p /usr/local/openp2p/
+tar -xzvf openp2p.tar.gz -C /usr/local/openp2p/
+chmod +x /usr/local/openp2p/openp2p
+pwd
+ls -l
+exit 0
--- a/example/dll/dll.cpp
+++ b/example/dll/dll.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+#include <windows.h>
+
+using namespace std;
+typedef void (*pRun)(const char *);
+
+int main(int argc, char *argv[])
+{
+	HMODULE dll = LoadLibraryA("openp2p.dll");
+	pRun run = (pRun)GetProcAddress(dll, "RunCmd");
+	run("-node 5800-debug2 -token YOUR-TOKEN");
+	FreeLibrary(dll);
+	return 0;
+}
--- a/example/echo/echo-client.go
+++ b/example/echo/echo-client.go
@@ -0,0 +1,42 @@
+package main
+
+import (
+	"fmt"
+	op2p "openp2p/core"
+	"time"
+)
+
+func main() {
+	op2p.Run()
+	for i := 0; i < 10; i++ {
+		go echoClient("5800-debug")
+	}
+	echoClient("5800-debug")
+}
+
+func echoClient(peerNode string) {
+	sendDatalen := op2p.ReadBuffLen
+	sendBuff := make([]byte, sendDatalen)
+	for i := 0; i < len(sendBuff); i++ {
+		sendBuff[i] = byte('A' + i/100)
+	}
+	// peerNode = "YOUR-PEER-NODE-NAME"
+	if err := op2p.GNetwork.ConnectNode(peerNode); err != nil {
+		fmt.Println("connect error:", err)
+		return
+	}
+	for i := 0; ; i++ {
+		sendBuff[1] = 'A' + byte(i%26)
+		if err := op2p.GNetwork.WriteNode(op2p.NodeNameToID(peerNode), sendBuff[:sendDatalen]); err != nil {
+			fmt.Println("write error:", err)
+			break
+		}
+		nd := op2p.GNetwork.ReadNode(time.Second * 10)
+		if nd == nil {
+			fmt.Printf("waiting for node data\n")
+			time.Sleep(time.Second * 10)
+			continue
+		}
+		fmt.Printf("read len=%d data=%s\n", len(nd), nd[:16]) // only print 16 bytes
+	}
+}
--- a/example/echo/echo-server.go
+++ b/example/echo/echo-server.go
@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	op2p "openp2p/core"
+	"time"
+)
+
+func main() {
+	op2p.Run()
+	echoServer()
+	forever := make(chan bool)
+	<-forever
+}
+
+func echoServer() {
+	// peerID := fmt.Sprintf("%d", core.NodeNameToID(peerNode))
+	for {
+		nd := op2p.GNetwork.ReadNode(time.Second * 10)
+		if nd == nil {
+			fmt.Printf("waiting for node data\n")
+			// time.Sleep(time.Second * 10)
+			continue
+		}
+		// fmt.Printf("read %s len=%d data=%s\n", nd.Node, len(nd.Data), nd.Data[:16])
+		nd[0] = 'R' // echo server mark as replied
+		if err := op2p.GNetwork.WriteNode(0, nd); err != nil {
+			fmt.Println("write error:", err)
+			break
+		}
+	}
+}
--- a/go.mod
+++ b/go.mod
@@ -1,30 +1,38 @@
 module openp2p

-go 1.18
+go 1.20

 require (
-	github.com/gorilla/websocket v1.4.2
-	github.com/lucas-clemente/quic-go v0.27.0
+	github.com/emirpasic/gods v1.18.1
+	github.com/gorilla/websocket v1.5.3
+	github.com/huin/goupnp v1.3.0
+	github.com/jackpal/go-nat-pmp v1.0.2
 	github.com/openp2p-cn/go-reuseport v0.3.2
 	github.com/openp2p-cn/service v1.0.0
-	github.com/openp2p-cn/totp v0.0.0-20230102121327-8e02f6b392ed
-	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f
+	github.com/openp2p-cn/totp v0.0.0-20230421034602-0f3320ffb25e
+	github.com/openp2p-cn/wireguard-go v0.0.20241020
+	github.com/quic-go/quic-go v0.34.0
+	github.com/vishvananda/netlink v1.1.1-0.20211118161826-650dca95af54
+	golang.org/x/net v0.30.0
+	golang.org/x/sys v0.26.0
+	golang.zx2c4.com/wireguard/windows v0.5.3
 )

 require (
-	github.com/cheekybits/genny v1.0.0 // indirect
-	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
+	github.com/golang/mock v1.7.0-rc.1 // indirect
+	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
 	github.com/kardianos/service v1.2.2 // indirect
-	github.com/marten-seemann/qtls-go1-16 v0.1.5 // indirect
-	github.com/marten-seemann/qtls-go1-17 v0.1.1 // indirect
-	github.com/marten-seemann/qtls-go1-18 v0.1.1 // indirect
-	github.com/nxadm/tail v1.4.8 // indirect
-	github.com/onsi/ginkgo v1.16.4 // indirect
-	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
-	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
-	golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect
-	golang.org/x/tools v0.1.12 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
-	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
+	github.com/onsi/ginkgo/v2 v2.2.0 // indirect
+	github.com/quic-go/qtls-go1-19 v0.3.2 // indirect
+	github.com/quic-go/qtls-go1-20 v0.2.2 // indirect
+	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f // indirect
+	golang.org/x/crypto v0.28.0 // indirect
+	golang.org/x/exp v0.0.0-20230725093048-515e97ebf090 // indirect
+	golang.org/x/mod v0.21.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/tools v0.26.0 // indirect
+	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
+	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173 // indirect
+	gvisor.dev/gvisor v0.0.0-20241128011400-745828301c93 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,109 @@
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/emirpasic/gods v1.18.1 h1:FXtiHYKDGKCW2KzwZKx0iC0PQmdlorYgdFG9jPXJ1Bc=
+github.com/emirpasic/gods v1.18.1/go.mod h1:8tpGGwCnJ5H4r6BWwaV6OrWmMoPhUl5jm/FMNAnJvWQ=
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+github.com/golang/mock v1.7.0-rc.1 h1:YojYx61/OLFsiv6Rw1Z96LpldJIy31o+UHmwAUMJ6/U=
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+github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
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+github.com/onsi/ginkgo/v2 v2.2.0 h1:3ZNA3L1c5FYDFTTxbFeVGGD8jYvjYauHD30YgLxVsNI=
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+github.com/onsi/gomega v1.20.1 h1:PA/3qinGoukvymdIDV8pii6tiZgC8kbmJO6Z5+b002Q=
+github.com/openp2p-cn/go-reuseport v0.3.2 h1:TO78WsyJ1F6g7rLp3hpTKOBxtZTU5Lz+Y4Mj+fVUfZc=
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--- a/lib/openp2p.go
+++ b/lib/openp2p.go
@@ -0,0 +1,18 @@
+package main
+
+// On Windows env
+// cd lib
+// go build -o openp2p.dll -buildmode=c-shared openp2p.go
+// caller example see example/dll
+import (
+	op "openp2p/core"
+)
+import "C"
+
+func main() {
+}
+
+//export RunCmd
+func RunCmd(cmd *C.char) {
+	op.RunCmd(C.GoString(cmd))
+}
--- a/pkg/upnp/nat.go
+++ b/pkg/upnp/nat.go
@@ -0,0 +1,239 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Package nat provides access to common network port mapping protocols.
+package openp2p
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"strings"
+	"sync"
+	"time"
+
+	natpmp "github.com/jackpal/go-nat-pmp"
+)
+
+// Interface An implementation of nat.Interface can map local ports to ports
+// accessible from the Internet.
+type Interface interface {
+	// These methods manage a mapping between a port on the local
+	// machine to a port that can be connected to from the internet.
+	//
+	// protocol is "UDP" or "TCP". Some implementations allow setting
+	// a display name for the mapping. The mapping may be removed by
+	// the gateway when its lifetime ends.
+	AddMapping(protocol string, extport, intport int, name string, lifetime time.Duration) (uint16, error)
+	DeleteMapping(protocol string, extport, intport int) error
+
+	// ExternalIP should return the external (Internet-facing)
+	// address of the gateway device.
+	ExternalIP() (net.IP, error)
+
+	// String should return name of the method. This is used for logging.
+	String() string
+}
+
+// Parse parses a NAT interface description.
+// The following formats are currently accepted.
+// Note that mechanism names are not case-sensitive.
+//
+//	"" or "none"         return nil
+//	"extip:77.12.33.4"   will assume the local machine is reachable on the given IP
+//	"any"                uses the first auto-detected mechanism
+//	"upnp"               uses the Universal Plug and Play protocol
+//	"pmp"                uses NAT-PMP with an auto-detected gateway address
+//	"pmp:192.168.0.1"    uses NAT-PMP with the given gateway address
+func Parse(spec string) (Interface, error) {
+	var (
+		before, after, found = strings.Cut(spec, ":")
+		mech                 = strings.ToLower(before)
+		ip                   net.IP
+	)
+	if found {
+		ip = net.ParseIP(after)
+		if ip == nil {
+			return nil, errors.New("invalid IP address")
+		}
+	}
+	switch mech {
+	case "", "none", "off":
+		return nil, nil
+	case "any", "auto", "on":
+		return Any(), nil
+	case "extip", "ip":
+		if ip == nil {
+			return nil, errors.New("missing IP address")
+		}
+		return ExtIP(ip), nil
+	case "upnp":
+		return UPnP(), nil
+	case "pmp", "natpmp", "nat-pmp":
+		return PMP(ip), nil
+	default:
+		return nil, fmt.Errorf("unknown mechanism %q", before)
+	}
+}
+
+const (
+	DefaultMapTimeout = 10 * time.Minute
+)
+
+// Map adds a port mapping on m and keeps it alive until c is closed.
+// This function is typically invoked in its own goroutine.
+//
+// Note that Map does not handle the situation where the NAT interface assigns a different
+// external port than the requested one.
+func Map(m Interface, c <-chan struct{}, protocol string, extport, intport int, name string) {
+	// log := log.New("proto", protocol, "extport", extport, "intport", intport, "interface", m)
+	refresh := time.NewTimer(DefaultMapTimeout)
+	defer func() {
+		refresh.Stop()
+		// log.Debug("Deleting port mapping")
+		m.DeleteMapping(protocol, extport, intport)
+	}()
+	if _, err := m.AddMapping(protocol, extport, intport, name, DefaultMapTimeout); err != nil {
+		// log.Debug("Couldn't add port mapping", "err", err)
+	} else {
+		// log.Info("Mapped network port")
+	}
+	for {
+		select {
+		case _, ok := <-c:
+			if !ok {
+				return
+			}
+		case <-refresh.C:
+			// log.Trace("Refreshing port mapping")
+			if _, err := m.AddMapping(protocol, extport, intport, name, DefaultMapTimeout); err != nil {
+				// log.Debug("Couldn't add port mapping", "err", err)
+			}
+			refresh.Reset(DefaultMapTimeout)
+		}
+	}
+}
+
+// ExtIP assumes that the local machine is reachable on the given
+// external IP address, and that any required ports were mapped manually.
+// Mapping operations will not return an error but won't actually do anything.
+type ExtIP net.IP
+
+func (n ExtIP) ExternalIP() (net.IP, error) { return net.IP(n), nil }
+func (n ExtIP) String() string              { return fmt.Sprintf("ExtIP(%v)", net.IP(n)) }
+
+// These do nothing.
+
+func (ExtIP) AddMapping(string, int, int, string, time.Duration) (uint16, error) { return 0, nil }
+func (ExtIP) DeleteMapping(string, int, int) error                               { return nil }
+
+// Any returns a port mapper that tries to discover any supported
+// mechanism on the local network.
+func Any() Interface {
+	// TODO: attempt to discover whether the local machine has an
+	// Internet-class address. Return ExtIP in this case.
+	return startautodisc("UPnP or NAT-PMP", func() Interface {
+		found := make(chan Interface, 2)
+		go func() { found <- discoverUPnP() }()
+		go func() { found <- discoverPMP() }()
+		for i := 0; i < cap(found); i++ {
+			if c := <-found; c != nil {
+				return c
+			}
+		}
+		return nil
+	})
+}
+
+// UPnP returns a port mapper that uses UPnP. It will attempt to
+// discover the address of your router using UDP broadcasts.
+func UPnP() Interface {
+	return startautodisc("UPnP", discoverUPnP)
+}
+
+// PMP returns a port mapper that uses NAT-PMP. The provided gateway
+// address should be the IP of your router. If the given gateway
+// address is nil, PMP will attempt to auto-discover the router.
+func PMP(gateway net.IP) Interface {
+	if gateway != nil {
+		return &pmp{gw: gateway, c: natpmp.NewClient(gateway)}
+	}
+	return startautodisc("NAT-PMP", discoverPMP)
+}
+
+// autodisc represents a port mapping mechanism that is still being
+// auto-discovered. Calls to the Interface methods on this type will
+// wait until the discovery is done and then call the method on the
+// discovered mechanism.
+//
+// This type is useful because discovery can take a while but we
+// want return an Interface value from UPnP, PMP and Auto immediately.
+type autodisc struct {
+	what string // type of interface being autodiscovered
+	once sync.Once
+	doit func() Interface
+
+	mu    sync.Mutex
+	found Interface
+}
+
+func startautodisc(what string, doit func() Interface) Interface {
+	// TODO: monitor network configuration and rerun doit when it changes.
+	return &autodisc{what: what, doit: doit}
+}
+
+func (n *autodisc) AddMapping(protocol string, extport, intport int, name string, lifetime time.Duration) (uint16, error) {
+	if err := n.wait(); err != nil {
+		return 0, err
+	}
+	return n.found.AddMapping(protocol, extport, intport, name, lifetime)
+}
+
+func (n *autodisc) DeleteMapping(protocol string, extport, intport int) error {
+	if err := n.wait(); err != nil {
+		return err
+	}
+	return n.found.DeleteMapping(protocol, extport, intport)
+}
+
+func (n *autodisc) ExternalIP() (net.IP, error) {
+	if err := n.wait(); err != nil {
+		return nil, err
+	}
+	return n.found.ExternalIP()
+}
+
+func (n *autodisc) String() string {
+	n.mu.Lock()
+	defer n.mu.Unlock()
+	if n.found == nil {
+		return n.what
+	}
+	return n.found.String()
+}
+
+// wait blocks until auto-discovery has been performed.
+func (n *autodisc) wait() error {
+	n.once.Do(func() {
+		n.mu.Lock()
+		n.found = n.doit()
+		n.mu.Unlock()
+	})
+	if n.found == nil {
+		return fmt.Errorf("no %s router discovered", n.what)
+	}
+	return nil
+}
--- a/pkg/upnp/natpmp.go
+++ b/pkg/upnp/natpmp.go
@@ -0,0 +1,130 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package openp2p
+
+import (
+	"fmt"
+	"net"
+	"strings"
+	"time"
+
+	natpmp "github.com/jackpal/go-nat-pmp"
+)
+
+// natPMPClient adapts the NAT-PMP protocol implementation so it conforms to
+// the common interface.
+type pmp struct {
+	gw net.IP
+	c  *natpmp.Client
+}
+
+func (n *pmp) String() string {
+	return fmt.Sprintf("NAT-PMP(%v)", n.gw)
+}
+
+func (n *pmp) ExternalIP() (net.IP, error) {
+	response, err := n.c.GetExternalAddress()
+	if err != nil {
+		return nil, err
+	}
+	return response.ExternalIPAddress[:], nil
+}
+
+func (n *pmp) AddMapping(protocol string, extport, intport int, name string, lifetime time.Duration) (uint16, error) {
+	if lifetime <= 0 {
+		return 0, fmt.Errorf("lifetime must not be <= 0")
+	}
+	// Note order of port arguments is switched between our
+	// AddMapping and the client's AddPortMapping.
+	res, err := n.c.AddPortMapping(strings.ToLower(protocol), intport, extport, int(lifetime/time.Second))
+	if err != nil {
+		return 0, err
+	}
+
+	// NAT-PMP maps an alternative available port number if the requested port
+	// is already mapped to another address and returns success. Handling of
+	// alternate port numbers is done by the caller.
+	return res.MappedExternalPort, nil
+}
+
+func (n *pmp) DeleteMapping(protocol string, extport, intport int) (err error) {
+	// To destroy a mapping, send an add-port with an internalPort of
+	// the internal port to destroy, an external port of zero and a
+	// time of zero.
+	_, err = n.c.AddPortMapping(strings.ToLower(protocol), intport, 0, 0)
+	return err
+}
+
+func discoverPMP() Interface {
+	// run external address lookups on all potential gateways
+	gws := potentialGateways()
+	found := make(chan *pmp, len(gws))
+	for i := range gws {
+		gw := gws[i]
+		go func() {
+			c := natpmp.NewClient(gw)
+			if _, err := c.GetExternalAddress(); err != nil {
+				found <- nil
+			} else {
+				found <- &pmp{gw, c}
+			}
+		}()
+	}
+	// return the one that responds first.
+	// discovery needs to be quick, so we stop caring about
+	// any responses after a very short timeout.
+	timeout := time.NewTimer(1 * time.Second)
+	defer timeout.Stop()
+	for range gws {
+		select {
+		case c := <-found:
+			if c != nil {
+				return c
+			}
+		case <-timeout.C:
+			return nil
+		}
+	}
+	return nil
+}
+
+// TODO: improve this. We currently assume that (on most networks)
+// the router is X.X.X.1 in a local LAN range.
+func potentialGateways() (gws []net.IP) {
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return nil
+	}
+	for _, iface := range ifaces {
+		ifaddrs, err := iface.Addrs()
+		if err != nil {
+			return gws
+		}
+		for _, addr := range ifaddrs {
+			if x, ok := addr.(*net.IPNet); ok {
+				if x.IP.IsPrivate() {
+					ip := x.IP.Mask(x.Mask).To4()
+					if ip != nil {
+						ip[3] = ip[3] | 0x01
+						gws = append(gws, ip)
+					}
+				}
+			}
+		}
+	}
+	return gws
+}
--- a/pkg/upnp/natupnp.go
+++ b/pkg/upnp/natupnp.go
@@ -0,0 +1,247 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package openp2p
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"math/rand"
+	"net"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/huin/goupnp"
+	"github.com/huin/goupnp/dcps/internetgateway1"
+	"github.com/huin/goupnp/dcps/internetgateway2"
+)
+
+const (
+	soapRequestTimeout = 3 * time.Second
+	rateLimit          = 200 * time.Millisecond
+)
+
+type upnp struct {
+	dev         *goupnp.RootDevice
+	service     string
+	client      upnpClient
+	mu          sync.Mutex
+	lastReqTime time.Time
+	rand        *rand.Rand
+}
+
+type upnpClient interface {
+	GetExternalIPAddress() (string, error)
+	AddPortMapping(string, uint16, string, uint16, string, bool, string, uint32) error
+	DeletePortMapping(string, uint16, string) error
+	GetNATRSIPStatus() (sip bool, nat bool, err error)
+}
+
+func (n *upnp) natEnabled() bool {
+	var ok bool
+	var err error
+	n.withRateLimit(func() error {
+		_, ok, err = n.client.GetNATRSIPStatus()
+		return err
+	})
+	return err == nil && ok
+}
+
+func (n *upnp) ExternalIP() (addr net.IP, err error) {
+	var ipString string
+	n.withRateLimit(func() error {
+		ipString, err = n.client.GetExternalIPAddress()
+		return err
+	})
+
+	if err != nil {
+		return nil, err
+	}
+	ip := net.ParseIP(ipString)
+	if ip == nil {
+		return nil, errors.New("bad IP in response")
+	}
+	return ip, nil
+}
+
+func (n *upnp) AddMapping(protocol string, extport, intport int, desc string, lifetime time.Duration) (uint16, error) {
+	ip, err := n.internalAddress()
+	if err != nil {
+		return 0, nil // TODO: Shouldn't we return the error?
+	}
+	protocol = strings.ToUpper(protocol)
+	lifetimeS := uint32(lifetime / time.Second)
+	n.DeleteMapping(protocol, extport, intport)
+
+	err = n.withRateLimit(func() error {
+		return n.client.AddPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
+	})
+	if err == nil {
+		return uint16(extport), nil
+	}
+
+	return uint16(extport), n.withRateLimit(func() error {
+		p, err := n.addAnyPortMapping(protocol, extport, intport, ip, desc, lifetimeS)
+		if err == nil {
+			extport = int(p)
+		}
+		return err
+	})
+}
+
+func (n *upnp) addAnyPortMapping(protocol string, extport, intport int, ip net.IP, desc string, lifetimeS uint32) (uint16, error) {
+	if client, ok := n.client.(*internetgateway2.WANIPConnection2); ok {
+		return client.AddAnyPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
+	}
+	// It will retry with a random port number if the client does
+	// not support AddAnyPortMapping.
+	extport = n.randomPort()
+	err := n.client.AddPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
+	if err != nil {
+		return 0, err
+	}
+	return uint16(extport), nil
+}
+
+func (n *upnp) randomPort() int {
+	if n.rand == nil {
+		n.rand = rand.New(rand.NewSource(time.Now().UnixNano()))
+	}
+	return n.rand.Intn(math.MaxUint16-10000) + 10000
+}
+
+func (n *upnp) internalAddress() (net.IP, error) {
+	devaddr, err := net.ResolveUDPAddr("udp4", n.dev.URLBase.Host)
+	if err != nil {
+		return nil, err
+	}
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return nil, err
+	}
+	for _, iface := range ifaces {
+		addrs, err := iface.Addrs()
+		if err != nil {
+			return nil, err
+		}
+		for _, addr := range addrs {
+			if x, ok := addr.(*net.IPNet); ok && x.Contains(devaddr.IP) {
+				return x.IP, nil
+			}
+		}
+	}
+	return nil, fmt.Errorf("could not find local address in same net as %v", devaddr)
+}
+
+func (n *upnp) DeleteMapping(protocol string, extport, intport int) error {
+	return n.withRateLimit(func() error {
+		return n.client.DeletePortMapping("", uint16(extport), strings.ToUpper(protocol))
+	})
+}
+
+func (n *upnp) String() string {
+	return "UPNP " + n.service
+}
+
+func (n *upnp) withRateLimit(fn func() error) error {
+	n.mu.Lock()
+	defer n.mu.Unlock()
+
+	lastreq := time.Since(n.lastReqTime)
+	if lastreq < rateLimit {
+		time.Sleep(rateLimit - lastreq)
+	}
+	err := fn()
+	n.lastReqTime = time.Now()
+	return err
+}
+
+// discoverUPnP searches for Internet Gateway Devices
+// and returns the first one it can find on the local network.
+func discoverUPnP() Interface {
+	found := make(chan *upnp, 2)
+	// IGDv1
+	go discover(found, internetgateway1.URN_WANConnectionDevice_1, func(sc goupnp.ServiceClient) *upnp {
+		switch sc.Service.ServiceType {
+		case internetgateway1.URN_WANIPConnection_1:
+			return &upnp{service: "IGDv1-IP1", client: &internetgateway1.WANIPConnection1{ServiceClient: sc}}
+		case internetgateway1.URN_WANPPPConnection_1:
+			return &upnp{service: "IGDv1-PPP1", client: &internetgateway1.WANPPPConnection1{ServiceClient: sc}}
+		}
+		return nil
+	})
+	// IGDv2
+	go discover(found, internetgateway2.URN_WANConnectionDevice_2, func(sc goupnp.ServiceClient) *upnp {
+		switch sc.Service.ServiceType {
+		case internetgateway2.URN_WANIPConnection_1:
+			return &upnp{service: "IGDv2-IP1", client: &internetgateway2.WANIPConnection1{ServiceClient: sc}}
+		case internetgateway2.URN_WANIPConnection_2:
+			return &upnp{service: "IGDv2-IP2", client: &internetgateway2.WANIPConnection2{ServiceClient: sc}}
+		case internetgateway2.URN_WANPPPConnection_1:
+			return &upnp{service: "IGDv2-PPP1", client: &internetgateway2.WANPPPConnection1{ServiceClient: sc}}
+		}
+		return nil
+	})
+	for i := 0; i < cap(found); i++ {
+		if c := <-found; c != nil {
+			return c
+		}
+	}
+	return nil
+}
+
+// finds devices matching the given target and calls matcher for all
+// advertised services of each device. The first non-nil service found
+// is sent into out. If no service matched, nil is sent.
+func discover(out chan<- *upnp, target string, matcher func(goupnp.ServiceClient) *upnp) {
+	devs, err := goupnp.DiscoverDevices(target)
+	if err != nil {
+		out <- nil
+		return
+	}
+	found := false
+	for i := 0; i < len(devs) && !found; i++ {
+		if devs[i].Root == nil {
+			continue
+		}
+		devs[i].Root.Device.VisitServices(func(service *goupnp.Service) {
+			if found {
+				return
+			}
+			// check for a matching IGD service
+			sc := goupnp.ServiceClient{
+				SOAPClient: service.NewSOAPClient(),
+				RootDevice: devs[i].Root,
+				Location:   devs[i].Location,
+				Service:    service,
+			}
+			sc.SOAPClient.HTTPClient.Timeout = soapRequestTimeout
+			upnp := matcher(sc)
+			if upnp == nil {
+				return
+			}
+			upnp.dev = devs[i].Root
+
+			out <- upnp
+			found = true
+		})
+	}
+	if !found {
+		out <- nil
+	}
+}
Author	SHA1	Message	Date
TenderIronh	12393f00c5	v3.25.8	2026-04-01 15:33:30 +08:00
TenderIronh	ef4bc1e1e3	go 1.25	2025-12-10 16:50:26 +08:00
TenderIronh	a1621bcfdd	rm some config save	2025-12-10 16:49:01 +08:00
TenderIronh	47220fe38b	go1.25	2025-12-10 16:47:16 +08:00
TenderIronh	d3e8ee2a32	websocket readmessage hang	2025-12-10 16:45:34 +08:00
TenderIronh	8e303e93f8	refactor	2025-11-24 10:53:02 +08:00
TenderIronh	471aa5e6ea	intranet support udp	2025-11-18 17:07:24 +08:00
TenderIronh	a4c6668760	fix system service bug and docker run path and nat detect bug	2025-11-18 16:35:30 +08:00
TenderIronh	dfaff2c327	fix system service bug and docker run path and nat detect bug	2025-11-18 16:34:42 +08:00
TenderIronh	57fe6986b0	refactor update and fix token loss bug	2025-11-17 10:00:50 +08:00
TenderIronh	6639f40d70	install bug and new log api	2025-11-14 17:19:50 +08:00
TenderIronh	d827fd108d	add log	2025-11-13 17:57:49 +08:00
coutps	4daeeaab1a	update README.md and README-ZH.md (#152 )	2025-10-11 16:18:29 +08:00
TenderIronh	2275620060	dartnode	2025-06-10 15:12:53 +08:00
TenderIronh	29faf4a950	nil pointer	2025-02-04 23:10:47 +08:00
TenderIronh	080e6af779	fix public ip detect bug	2024-12-02 21:10:15 +08:00
TenderIronh	77bfa45172	portmap loss & android ipv6 failed & public ip detect	2024-11-21 10:31:07 +08:00
TenderIronh	3616768682	rename	2024-11-21 10:29:06 +08:00
TenderIronh	f015b828fc	specified gomobile version	2024-10-20 21:33:20 +08:00
TenderIronh	df1e16e708	3.21.8	2024-10-20 11:33:07 +08:00
W192547975	c68094cc12	CertPool Fix (#96 ) Remove caCertPool errCert “else” in p2pnetwork.go	2024-08-02 14:23:47 +08:00
CAESIUS_TIM	a0df0b1e95	[doc ]no bare urls (#80 )	2024-08-02 14:22:31 +08:00
TenderIronh	9c3d557f5d	LF	2024-07-26 22:27:24 +08:00
TenderIronh	2dea3a718d	check remote service	2024-07-26 22:07:48 +08:00
TenderIronh	9dda148232	3.18.4 virtual private network	2024-07-14 11:00:43 +08:00
TenderIronh	e7b696c474	miss build.gradle	2023-11-18 11:33:14 +08:00
TenderIronh	7e57237ec9	3.12.0	2023-10-28 18:03:42 +08:00
TenderIronh	52dfe5c938	fix client update bug	2023-10-28 17:56:58 +08:00
TenderIronh	b72ede9a6a	optimize hole punching	2023-09-04 23:11:42 +08:00
Ahackerl	b39fab2188	fix unused sync (#47 )	2023-09-04 09:07:20 +08:00
W192547975	9b0525294a	echo server in publicIPTest update (#39 ) * Update nat.go func publicIPTest echo server	2023-08-24 10:55:09 +08:00
W192547975	276a4433f1	Bitset logmode update (#40 ) * Update log.go bitset loglevel --------- Co-authored-by: OpenP2P <89245779+TenderIronh@users.noreply.github.com>	2023-08-10 11:23:36 +08:00
TenderIronh	e21adebc26	3.10.3	2023-08-09 22:52:29 +08:00
OpenP2P	b2a7619bd6	Merge pull request #43 from W192547975/fixbug Bug fixing from 2023/8/1	2023-08-08 16:50:25 +08:00
W192547975	fe4022ba6c	Update openp2p.go	2023-08-06 23:38:14 +08:00
W192547975	82c74b4f85	Update config.go	2023-08-06 23:31:17 +08:00
TenderIronh	0af65b7204	tls verify server and support docker	2023-08-03 23:05:45 +08:00
TenderIronh	46b4f78010	optimize tcp and udp punch	2023-07-29 20:36:35 +08:00
TenderIronh	8ebdf3341e	3.9.1	2023-07-21 22:25:33 +08:00
TenderIronh	b667e5b766	3.8.0	2023-05-07 20:42:06 +08:00