Merge pull request #106 from snail007/dev

docs

.gitignore

@@ -0,0 +1,10 @@
+/proxy
+/goproxy
+*.exe
+*.exe~
+.*
+*.prof
+!.gitignore
+release-*
+/proxy.crt
+/proxy.key

CHANGELOG

@@ -0,0 +1,193 @@
+proxy更新日志
+v5.2
+1.修复了HTTP(S)\SPS反向代理无法正常工作的问题.
+2.优化了智能判断,减少不必要的DNS解析.
+3.重构了SOCKS和SPS的UDP功能,基于UDP的游戏加速嗖嗖的.
+
+v5.1
+1.优化了kcp默认mtu配置,调整为450.
+2.优化了HTTP(S)\SOCKS5代理智能判断，更加精确。
+3.fix #97 , 修复了RemoveProxyHeaders方法忽略了第一行的bug。
+4.修复了-g参数长格式没有连接符号的bug.
+5.重构了证书生成功能,不再有任何外部依赖,任何平台都可以独立生成证书.
+
+v5.0
+1.修复了SPS多端口无效的bug.
+2.增加了DNS代理功能，提供安全无污染的DNS解析.
+
+v4.9
+1.修复了HTTP Basic代理返回不合适的头部,导致浏览器不会弹框,个别代理插件无法认证的问题.
+2.内网穿透切换smux到yamux.
+3.优化了HTTP(S)\SOCKS5代理--always的处理逻辑.
+
+v4.8
+1.优化了SPS连接HTTP上级的指令,避免了某些代理不响应的问题.
+2.SPS功能增加了参数:
+  --disable-http:禁用http(s)代理
+  --disable-socks:禁用socks代理
+  默认都是false(开启).
+3.重构了部分代码的日志部分,保证了日志按着预期输出.
+4.修复了sps\http代理初始化服务的时机不正确,导致nil异常的bug.
+5.优化了sps日志输出.
+6.--debug参数增加了Profiling功能,可以保存cpu,内存等多种调试数据到文件.
+7.优化了服务注册,避免了不必要的内存开销.
+8.增加了Dockerfile和docker安装手册.
+9.优化了ioCopy避免了内存泄漏,大大提升了内存占用的稳定性.
+
+
+v4.7
+1.增加了基于gomobile的sdk,对android/ios/windows/linux/mac提供SDK支持.
+2.优化了bridge的日志,增加了client和server的掉线日志.
+3.优化了sps读取http(s)代理响应的缓冲大小,同时优化了CONNECT请求,
+ 避免了某些代理服务器返回过多数据导致不能正常通讯的问题.
+4.去除了鸡肋连接池功能.
+5.优化了所有服务代码,方便对sdk提供支持.
+6.增加了SDK手册.
+7.增加了GUI客户端(windows/web/android/ios)介绍主页.
+8.SPS\HTTP(s)\Socks代理增加了自定义加密传输,只需要通过参数-z和-Z设置一个密码即可.
+9.SPS\HTTP(s)\Socks代理增加了压缩传输,只需要通过参数-m和-M设置即可.
+10.手册增加了SPS\HTTP(s)\Socks自定义加密的使用示例.
+11.手册增加了SPS\HTTP(s)\Socks压缩传输的使用示例.
+12.优化了多链接版本的内网穿透,融合了多链接和smux的优点,即能够拥有大的吞吐量,
+ 同时又具备mux的心跳机制保证了链接的稳定性.
+13.手册增加了大量配图.
+14.优化了socks代理udp上级的设置逻辑,智能判断parent上级填充udp parent.
+15.优化了项目文件夹结构,使用源码可以直接go get.
+
+v4.6
+1.sps,http(s),socks5,内网穿透都做了大量的超时优化处理,更加稳定.
+2.sps增加了强大的树形级联认证支持,可以轻松构建你的认证代理网络.
+3.手册增加了6.6对sps认证功能的介绍.
+
+
+v4.5
+1.优化了mux内网穿透连接管理逻辑,增强了稳定性.  
+2.mux内网穿透增加了tcp和kcp协议支持,之前是tls,现在支持三种协议tcp,tls,kcp.  
+3.keygen参数增加了用法: proxy keygen usage.  
+4.http(s)/socks5代理,tls增加了自签名证书支持.  
+5.建议升级.   
+v4.4
+1.增加了协议转换sps功能，代理协议转换使用的是sps子命令(socks+https的缩写)，
+sps本身不提供代理功能，只是接受代理请求"转换并转发"给已经存在的http(s)代理
+或者socks5代理；sps可以把已经存在的http(s)代理或者socks5代理转换为一个端口
+同时支持http(s)和socks5代理，而且http(s)代理支持正向代理和反向代理(SNI)，转
+换后的SOCKS5代理不支持UDP功能；另外对于已经存在的http(s)代理或者socks5代理，
+支持tls、tcp、kcp三种模式，支持链式连接，也就是可以多个sps结点层级连接构建
+加密通道。
+2.增加了对KCP传输参数的配置，多达17个参数可以自由的配置对kcp传输效率调优。
+3.内网穿透功能，server和client增加了--session-count参数，可以设置server每个
+监听端口到bridge打开的session数量，可以设置client到bridge打开的session数量，
+之前都是1个，现在性能提升N倍，N就是你自己设置的--session-count，这个参数很大
+程度上解决了多路复用的拥塞问题，v4.4开始默认10个。
+
+v4.3
+1.优化了参数keygen生成证书逻辑，避免证书出现特征。
+2.http(s)和socks代理增加了--dns-address和--dns-ttl参数。
+ 用于自己指定proxy访问域名的时候使用的dns（--dns-address）以及解析结果缓存时间（--dns-ttl）秒数，
+ 避免系统dns对proxy的干扰，另外缓存功能还能减少dns解析时间提高访问速度。
+3.优化了http代理的basic认证逻辑。
+提示：
+v4.3生成的证书不适用于v4.2及以下版本。
+
+v4.2
+1.优化了内网穿透,避免了client意外下线,导致链接信息残留的问题.
+2.http代理增加了SNI支持,现在http(s)代理模式支持反向代理,支持http(s)透明代理.
+3.增加了英文手册.  
+
+v4.1
+1.优化了http(s),socks5代理中的域名智能判断,如果是内网IP,直接走本地网络,提升浏览体验,
+ 同时优化了检查机制,判断更快.
+2.http代理basic认证增加了对https协议的支持,现在basic认证可以控制所有http(s)流量了.
+3.项目代码增加了依赖类库vendor目录,clone下来就能go build,再也不用担心go get依赖类库
+ 失败导致不能编译了.
+
+v4.0
+1.内网穿透三端重构了一个multiplexing版本，使用github.com/xtaci/smux实现了tcp链接的多路复用，
+  鼎鼎大名的kcp-go底层就是使用的这个库，基于kcp-go的双边加速工具kcptun的广泛使用已经很好
+  的验证来该库的强大与稳定。multiplexing版的内网穿透对应的子命令分别是server，client，bridge
+  使用方式和参数与之前的子命令tserver，tclient，tserver完全一样，另外server，client增加了
+  压缩传输参数--c，使用压缩传输速度更快。
+
+v3.9
+1.增加了守护运行参数--forever,比如: proxy http --forever ,
+  proxy会fork子进程,然后监控子进程,如果子进程异常退出,5秒后重启子进程.
+  该参数配合后台运行参数--daemon和日志参数--log,可以保障proxy一直在后台执行不会因为意外退出,
+  而且可以通过日志文件看到proxy的输出日志内容.
+  比如: proxy http -p ":9090" --forever --log proxy.log --daemon
+
+v3.8
+1.增加了日志输出到文件--log参数,比如: --log proxy.log,日志就会输出到proxy.log方便排除问题.
+
+v3.7
+1.修复了socks代理不能正常和上级代理通讯的问题.
+
+
+v3.6
+1.http(s),socks代理,集成了外部HTTP API认证,可以通过外部API对用户名和密码进行认证.
+2.手册http(s),socks代理认证部分增加了集成外部HTTP API认证的使用说明.
+
+v3.5
+1.优化了kcp参数,速度有所提升.
+2.修复了socks无法正常工作的问题.
+3.修正了文档中的一些描述.
+4.tcp代理增加了kcp协议传输数据.
+5.优化了死循环检查,增加了添加本地IP参数,当VPS在nat设备后面,
+  vps上网卡IP都是内网IP,这个时候可以通过-g参数添加vps的外网ip防止死循环.
+6.增加了--daemon参数,可以后台运行程序哟.  
+
+v3.4
+1.socks5代理新增了用户名密码验证支持.
+2.socks5,http(s)代理增加了kcp传输协议支持.
+3.优化了内网穿透的心跳机制.
+
+v3.3
+1.修复了socks代理模式对证书文件的判断逻辑.
+2.增强了http代理,socks代理的ssh中转模式的稳定性.
+3.socks代理tls,tcp模式新增了CMD_ASSOCIATE(udp)支持.socks代理ssh模式不支持udp.
+4.修复了http代理某些情况下会崩溃的bug.
+
+v3.2
+1.内网穿透功能server端-r参数增加了协议和key设置.
+2.手册增加了对-r参数的详细说明.
+3.修复了普通模式也检查证书文件的bug.
+4.增加了Socks5支持,目前只支持TCP协议,不支持UDP协议.
+5.Socks5上级代理支持ssh中转,linux服务器不需要任何服务端,本地一个proxy即可开心上网.
+6.http(s)代理增加了ssh中转支持,linux服务器不需要任何服务端,本地一个proxy即可开心上网.
+
+v3.1
+1.优化了内网穿透功能,bridge,client和server只需要启动一个即可。  
+  server端启动的时候可以指定client端要暴露的一个或者多个端口。  
+2.修复了重复解析命令行参数的问题。  
+3.手册增加了微信接口本地开发的示例。  
+4.增加了配置文件使用说明.  
+
+v3.0
+1.此次更新不兼容2.x版本,重构了全部代码,架构更合理,利于功能模块的增加与维护。
+2.增加了代理死循环检查,增强了安全性。
+3.增加了反向代理模式(即:内网穿透),支持TCP和UDP两种协议,可以把任何局域网的机器A所在网络的任何端。
+  暴露到任何局域网的机器B的本地端口或暴露到任何公网VPS上。
+4.正向代理增加了UDP模式支持。
+
+
+v2.2
+1.增加了强制使用上级代理参数always.可以使所有流量都走上级代理。
+2.增加了定时检查网络是否正常,可以在本地网络不稳定的时候修复连接池状态,提升代理访问体验。
+3.http代理增加了对ipv6地址的支持。
+
+v2.1
+1.增加了http basic验证功能,可以对http代理协议设置basic验证,用户名和密码支持来自文件或者命令行。
+2.优化了域名检查方法，避免空连接的出现。
+3.修复了连接上级代理超时参数传递错误导致超时过大的问题。
+4.增加了连接池状态监测,如果上级代理或者网络出现问题,会及时重新初始化连接池,防止大量无效连接,降低浏览体验。
+5.增加了对系统kill信号的捕获,可以在收到系统kill信号之后执行清理释放连接的操作.避免出现大量CLOSE_WAIT。
+
+v2.0
+1.增加了连接池功能,大幅提高了通过上级代理访问的速度。
+2.HTTP代理模式,优化了请求URL的获取逻辑,可以支持:http,https,websocke。
+3.增加了TCP代理模式,支持是否加密通讯。
+4.优化了链接关闭逻辑,避免出现大量CLOSE_WAIT。
+5.增加了黑白名单机制,更自由快速的访问。
+6.优化了网站Block机制检测,判断更准确。
+
+v1.0
+1.始发版本,可以代理http,https。

Dockerfile

@@ -0,0 +1,9 @@
+FROM golang:1.10.3-alpine as builder
+ARG GOPROXY_VERSION=master
+RUN apk update && apk upgrade && \
+    apk add --no-cache git && cd /go/src/ && git clone https://github.com/snail007/goproxy && \
+	cd goproxy && git checkout ${GOPROXY_VERSION} && \
+    go get && CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o proxy
+FROM alpine:3.7
+COPY --from=builder /go/src/goproxy/proxy /
+CMD /proxy ${OPTS}

Gopkg.lock

@@ -0,0 +1,139 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  branch = "master"
+  name = "github.com/alecthomas/template"
+  packages = [
+    ".",
+    "parse"
+  ]
+  revision = "a0175ee3bccc567396460bf5acd36800cb10c49c"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/alecthomas/units"
+  packages = ["."]
+  revision = "2efee857e7cfd4f3d0138cc3cbb1b4966962b93a"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/golang/snappy"
+  packages = ["."]
+  revision = "2e65f85255dbc3072edf28d6b5b8efc472979f5a"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/hashicorp/yamux"
+  packages = ["."]
+  revision = "3520598351bb3500a49ae9563f5539666ae0a27c"
+
+[[projects]]
+  name = "github.com/klauspost/cpuid"
+  packages = ["."]
+  revision = "ae7887de9fa5d2db4eaa8174a7eff2c1ac00f2da"
+  version = "v1.1"
+
+[[projects]]
+  name = "github.com/klauspost/reedsolomon"
+  packages = ["."]
+  revision = "6bb6130ff6a76a904c1841707d65603aec9cc288"
+  version = "v1.6"
+
+[[projects]]
+  name = "github.com/miekg/dns"
+  packages = ["."]
+  revision = "5a2b9fab83ff0f8bfc99684bd5f43a37abe560f1"
+  version = "v1.0.8"
+
+[[projects]]
+  name = "github.com/pkg/errors"
+  packages = ["."]
+  revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
+  version = "v0.8.0"
+
+[[projects]]
+  name = "github.com/pmylund/go-cache"
+  packages = ["."]
+  revision = "a3647f8e31d79543b2d0f0ae2fe5c379d72cedc0"
+  version = "v2.1.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/templexxx/cpufeat"
+  packages = ["."]
+  revision = "3794dfbfb04749f896b521032f69383f24c3687e"
+
+[[projects]]
+  name = "github.com/templexxx/xor"
+  packages = ["."]
+  revision = "0af8e873c554da75f37f2049cdffda804533d44c"
+  version = "0.1.2"
+
+[[projects]]
+  name = "github.com/tjfoc/gmsm"
+  packages = ["sm4"]
+  revision = "98aa888b79d8de04afe0fccf45ed10594efc858b"
+  version = "v1.1"
+
+[[projects]]
+  name = "github.com/xtaci/kcp-go"
+  packages = ["."]
+  revision = "42bc1dfefff592fdb3affa793980c4f6ab4213e5"
+  version = "v3.25"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/crypto"
+  packages = [
+    "blowfish",
+    "cast5",
+    "curve25519",
+    "ed25519",
+    "ed25519/internal/edwards25519",
+    "internal/chacha20",
+    "internal/subtle",
+    "pbkdf2",
+    "poly1305",
+    "salsa20",
+    "salsa20/salsa",
+    "ssh",
+    "tea",
+    "twofish",
+    "xtea"
+  ]
+  revision = "a8fb68e7206f8c78be19b432c58eb52a6aa34462"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/net"
+  packages = [
+    "bpf",
+    "context",
+    "internal/iana",
+    "internal/socket",
+    "internal/socks",
+    "ipv4",
+    "ipv6",
+    "proxy"
+  ]
+  revision = "db08ff08e8622530d9ed3a0e8ac279f6d4c02196"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/time"
+  packages = ["rate"]
+  revision = "fbb02b2291d28baffd63558aa44b4b56f178d650"
+
+[[projects]]
+  name = "gopkg.in/alecthomas/kingpin.v2"
+  packages = ["."]
+  revision = "947dcec5ba9c011838740e680966fd7087a71d0d"
+  version = "v2.2.6"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "eab0ef29432489696d8bfd524757dcb03a83f91c329f2d05c36da70df850360d"
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

@@ -0,0 +1,66 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/golang/snappy"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/hashicorp/yamux"
+
+[[constraint]]
+  name = "github.com/miekg/dns"
+  version = "1.0.8"
+
+[[constraint]]
+  name = "github.com/pmylund/go-cache"
+  version = "2.1.0"
+
+[[constraint]]
+  name = "github.com/xtaci/kcp-go"
+  version = "3.25.0"
+
+[[constraint]]
+  branch = "master"
+  name = "golang.org/x/crypto"
+
+[[constraint]]
+  branch = "master"
+  name = "golang.org/x/net"
+
+[[constraint]]
+  branch = "master"
+  name = "golang.org/x/time"
+
+[[constraint]]
+  name = "gopkg.in/alecthomas/kingpin.v2"
+  version = "2.2.6"
+
+[prune]
+  go-tests = true
+  unused-packages = true

LICENSE

@@ -1,21 +1,674 @@
-MIT License
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
-Copyright (c) 2017 snail007
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
+                            Preamble
-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
+  The GNU General Public License is a free, copyleft license for
-copies or substantial portions of the Software.
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+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    {one line to give the program's name and a brief idea of what it does.}
+    Copyright (C) {year}  {name of author}
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    {project}  Copyright (C) {year}  {fullname}
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

auth-file

@@ -0,0 +1,3 @@
+#comment
+user3:pass3
+user4:pass4

config.go

@@ -0,0 +1,499 @@
+package main
+
+import (
+	"bufio"
+	"crypto/sha1"
+	"fmt"
+	logger "log"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"runtime/pprof"
+	"time"
+
+	sdk "github.com/snail007/goproxy/sdk/android-ios"
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+
+	httpx "github.com/snail007/goproxy/services/http"
+	keygenx "github.com/snail007/goproxy/services/keygen"
+	mux "github.com/snail007/goproxy/services/mux"
+	socksx "github.com/snail007/goproxy/services/socks"
+	spsx "github.com/snail007/goproxy/services/sps"
+	tcpx "github.com/snail007/goproxy/services/tcp"
+	tunnel "github.com/snail007/goproxy/services/tunnel"
+	udpx "github.com/snail007/goproxy/services/udp"
+
+	kcp "github.com/xtaci/kcp-go"
+	"golang.org/x/crypto/pbkdf2"
+	kingpin "gopkg.in/alecthomas/kingpin.v2"
+)
+
+var (
+	app                                                                                                       *kingpin.Application
+	service                                                                                                   *services.ServiceItem
+	cmd                                                                                                       *exec.Cmd
+	cpuProfilingFile, memProfilingFile, blockProfilingFile, goroutineProfilingFile, threadcreateProfilingFile *os.File
+	isDebug                                                                                                   bool
+)
+
+func initConfig() (err error) {
+	//define  args
+	tcpArgs := tcpx.TCPArgs{}
+	httpArgs := httpx.HTTPArgs{}
+	tunnelServerArgs := tunnel.TunnelServerArgs{}
+	tunnelClientArgs := tunnel.TunnelClientArgs{}
+	tunnelBridgeArgs := tunnel.TunnelBridgeArgs{}
+	muxServerArgs := mux.MuxServerArgs{}
+	muxClientArgs := mux.MuxClientArgs{}
+	muxBridgeArgs := mux.MuxBridgeArgs{}
+	udpArgs := udpx.UDPArgs{}
+	socksArgs := socksx.SocksArgs{}
+	spsArgs := spsx.SPSArgs{}
+	dnsArgs := sdk.DNSArgs{}
+	keygenArgs := keygenx.KeygenArgs{}
+	kcpArgs := kcpcfg.KCPConfigArgs{}
+
+	//build srvice args
+	app = kingpin.New("proxy", "happy with proxy")
+	app.Author("snail").Version(APP_VERSION)
+	debug := app.Flag("debug", "debug log output").Default("false").Bool()
+	daemon := app.Flag("daemon", "run proxy in background").Default("false").Bool()
+	forever := app.Flag("forever", "run proxy in forever,fail and retry").Default("false").Bool()
+	logfile := app.Flag("log", "log file path").Default("").String()
+	kcpArgs.Key = app.Flag("kcp-key", "pre-shared secret between client and server").Default("secrect").String()
+	kcpArgs.Crypt = app.Flag("kcp-method", "encrypt/decrypt method, can be: aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, sm4, none").Default("aes").Enum("aes", "aes-128", "aes-192", "salsa20", "blowfish", "twofish", "cast5", "3des", "tea", "xtea", "xor", "sm4", "none")
+	kcpArgs.Mode = app.Flag("kcp-mode", "profiles: fast3, fast2, fast, normal, manual").Default("fast").Enum("fast3", "fast2", "fast", "normal", "manual")
+	kcpArgs.MTU = app.Flag("kcp-mtu", "set maximum transmission unit for UDP packets").Default("450").Int()
+	kcpArgs.SndWnd = app.Flag("kcp-sndwnd", "set send window size(num of packets)").Default("1024").Int()
+	kcpArgs.RcvWnd = app.Flag("kcp-rcvwnd", "set receive window size(num of packets)").Default("1024").Int()
+	kcpArgs.DataShard = app.Flag("kcp-ds", "set reed-solomon erasure coding - datashard").Default("10").Int()
+	kcpArgs.ParityShard = app.Flag("kcp-ps", "set reed-solomon erasure coding - parityshard").Default("3").Int()
+	kcpArgs.DSCP = app.Flag("kcp-dscp", "set DSCP(6bit)").Default("0").Int()
+	kcpArgs.NoComp = app.Flag("kcp-nocomp", "disable compression").Default("false").Bool()
+	kcpArgs.AckNodelay = app.Flag("kcp-acknodelay", "be carefull! flush ack immediately when a packet is received").Default("true").Bool()
+	kcpArgs.NoDelay = app.Flag("kcp-nodelay", "be carefull!").Default("0").Int()
+	kcpArgs.Interval = app.Flag("kcp-interval", "be carefull!").Default("50").Int()
+	kcpArgs.Resend = app.Flag("kcp-resend", "be carefull!").Default("0").Int()
+	kcpArgs.NoCongestion = app.Flag("kcp-nc", "be carefull! no congestion").Default("0").Int()
+	kcpArgs.SockBuf = app.Flag("kcp-sockbuf", "be carefull!").Default("4194304").Int()
+	kcpArgs.KeepAlive = app.Flag("kcp-keepalive", "be carefull!").Default("10").Int()
+
+	//########http#########
+	http := app.Command("http", "proxy on http mode")
+	httpArgs.Parent = http.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	httpArgs.CaCertFile = http.Flag("ca", "ca cert file for tls").Default("").String()
+	httpArgs.CertFile = http.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	httpArgs.KeyFile = http.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	httpArgs.LocalType = http.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	httpArgs.ParentType = http.Flag("parent-type", "parent protocol type <tls|tcp|ssh|kcp>").Short('T').Enum("tls", "tcp", "ssh", "kcp")
+	httpArgs.Always = http.Flag("always", "always use parent proxy").Default("false").Bool()
+	httpArgs.Timeout = http.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Default("2000").Int()
+	httpArgs.HTTPTimeout = http.Flag("http-timeout", "check domain if blocked , http request timeout milliseconds when connect to host").Default("3000").Int()
+	httpArgs.Interval = http.Flag("interval", "check domain if blocked every interval seconds").Default("10").Int()
+	httpArgs.Blocked = http.Flag("blocked", "blocked domain file , one domain each line").Default("blocked").Short('b').String()
+	httpArgs.Direct = http.Flag("direct", "direct domain file , one domain each line").Default("direct").Short('d').String()
+	httpArgs.AuthFile = http.Flag("auth-file", "http basic auth file,\"username:password\" each line in file").Short('F').String()
+	httpArgs.Auth = http.Flag("auth", "http basic auth username and password, mutiple user repeat -a ,such as: -a user1:pass1 -a user2:pass2").Short('a').Strings()
+	httpArgs.CheckParentInterval = http.Flag("check-parent-interval", "check if proxy is okay every interval seconds,zero: means no check").Short('I').Default("3").Int()
+	httpArgs.Local = http.Flag("local", "local ip:port to listen,multiple address use comma split,such as: 0.0.0.0:80,0.0.0.0:443").Short('p').Default(":33080").String()
+	httpArgs.SSHUser = http.Flag("ssh-user", "user for ssh").Short('u').Default("").String()
+	httpArgs.SSHKeyFile = http.Flag("ssh-key", "private key file for ssh").Short('S').Default("").String()
+	httpArgs.SSHKeyFileSalt = http.Flag("ssh-keysalt", "salt of ssh private key").Short('s').Default("").String()
+	httpArgs.SSHPassword = http.Flag("ssh-password", "password for ssh").Short('A').Default("").String()
+	httpArgs.LocalIPS = http.Flag("local-bind-ips", "if your host behind a nat,set your public ip here avoid dead loop").Short('g').Strings()
+	httpArgs.AuthURL = http.Flag("auth-url", "http basic auth username and password will send to this url,response http code equal to 'auth-code' means ok,others means fail.").Default("").String()
+	httpArgs.AuthURLTimeout = http.Flag("auth-timeout", "access 'auth-url' timeout milliseconds").Default("3000").Int()
+	httpArgs.AuthURLOkCode = http.Flag("auth-code", "access 'auth-url' success http code").Default("204").Int()
+	httpArgs.AuthURLRetry = http.Flag("auth-retry", "access 'auth-url' fail and retry count").Default("1").Int()
+	httpArgs.DNSAddress = http.Flag("dns-address", "if set this, proxy will use this dns for resolve doamin").Short('q').Default("").String()
+	httpArgs.DNSTTL = http.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	httpArgs.LocalKey = http.Flag("local-key", "the password for auto encrypt/decrypt local connection data").Short('z').Default("").String()
+	httpArgs.ParentKey = http.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	httpArgs.LocalCompress = http.Flag("local-compress", "auto compress/decompress data on local connection").Short('m').Default("false").Bool()
+	httpArgs.ParentCompress = http.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+
+	//########tcp#########
+	tcp := app.Command("tcp", "proxy on tcp mode")
+	tcpArgs.Parent = tcp.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	tcpArgs.CertFile = tcp.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tcpArgs.KeyFile = tcp.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tcpArgs.Timeout = tcp.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Short('e').Default("2000").Int()
+	tcpArgs.ParentType = tcp.Flag("parent-type", "parent protocol type <tls|tcp|kcp|udp>").Short('T').Enum("tls", "tcp", "udp", "kcp")
+	tcpArgs.LocalType = tcp.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	tcpArgs.CheckParentInterval = tcp.Flag("check-parent-interval", "check if proxy is okay every interval seconds,zero: means no check").Short('I').Default("3").Int()
+	tcpArgs.Local = tcp.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+
+	//########udp#########
+	udp := app.Command("udp", "proxy on udp mode")
+	udpArgs.Parent = udp.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	udpArgs.CertFile = udp.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	udpArgs.KeyFile = udp.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	udpArgs.Timeout = udp.Flag("timeout", "tcp timeout milliseconds when connect to parent proxy").Short('t').Default("2000").Int()
+	udpArgs.ParentType = udp.Flag("parent-type", "parent protocol type <tls|tcp|udp>").Short('T').Enum("tls", "tcp", "udp")
+	udpArgs.CheckParentInterval = udp.Flag("check-parent-interval", "check if proxy is okay every interval seconds,zero: means no check").Short('I').Default("3").Int()
+	udpArgs.Local = udp.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+
+	//########mux-server#########
+	muxServer := app.Command("server", "proxy on mux server mode")
+	muxServerArgs.Parent = muxServer.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	muxServerArgs.ParentType = muxServer.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Default("tls").Short('T').Enum("tls", "tcp", "kcp")
+	muxServerArgs.CertFile = muxServer.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	muxServerArgs.KeyFile = muxServer.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	muxServerArgs.Timeout = muxServer.Flag("timeout", "tcp timeout with milliseconds").Short('i').Default("2000").Int()
+	muxServerArgs.IsUDP = muxServer.Flag("udp", "proxy on udp mux server mode").Default("false").Bool()
+	muxServerArgs.Key = muxServer.Flag("k", "client key").Default("default").String()
+	muxServerArgs.Route = muxServer.Flag("route", "local route to client's network, such as: PROTOCOL://LOCAL_IP:LOCAL_PORT@[CLIENT_KEY]CLIENT_LOCAL_HOST:CLIENT_LOCAL_PORT").Short('r').Default("").Strings()
+	muxServerArgs.IsCompress = muxServer.Flag("c", "compress data when tcp|tls mode").Default("false").Bool()
+	muxServerArgs.SessionCount = muxServer.Flag("session-count", "session count which connect to bridge").Short('n').Default("10").Int()
+
+	//########mux-client#########
+	muxClient := app.Command("client", "proxy on mux client mode")
+	muxClientArgs.Parent = muxClient.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	muxClientArgs.ParentType = muxClient.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Default("tls").Short('T').Enum("tls", "tcp", "kcp")
+	muxClientArgs.CertFile = muxClient.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	muxClientArgs.KeyFile = muxClient.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	muxClientArgs.Timeout = muxClient.Flag("timeout", "tcp timeout with milliseconds").Short('i').Default("2000").Int()
+	muxClientArgs.Key = muxClient.Flag("k", "key same with server").Default("default").String()
+	muxClientArgs.IsCompress = muxClient.Flag("c", "compress data when tcp|tls mode").Default("false").Bool()
+	muxClientArgs.SessionCount = muxClient.Flag("session-count", "session count which connect to bridge").Short('n').Default("10").Int()
+
+	//########mux-bridge#########
+	muxBridge := app.Command("bridge", "proxy on mux bridge mode")
+	muxBridgeArgs.CertFile = muxBridge.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	muxBridgeArgs.KeyFile = muxBridge.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	muxBridgeArgs.Timeout = muxBridge.Flag("timeout", "tcp timeout with milliseconds").Short('i').Default("2000").Int()
+	muxBridgeArgs.Local = muxBridge.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+	muxBridgeArgs.LocalType = muxBridge.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tls").Short('t').Enum("tls", "tcp", "kcp")
+
+	//########tunnel-server#########
+	tunnelServer := app.Command("tserver", "proxy on tunnel server mode")
+	tunnelServerArgs.Parent = tunnelServer.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	tunnelServerArgs.CertFile = tunnelServer.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tunnelServerArgs.KeyFile = tunnelServer.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tunnelServerArgs.Timeout = tunnelServer.Flag("timeout", "tcp timeout with milliseconds").Short('t').Default("2000").Int()
+	tunnelServerArgs.IsUDP = tunnelServer.Flag("udp", "proxy on udp tunnel server mode").Default("false").Bool()
+	tunnelServerArgs.Key = tunnelServer.Flag("k", "client key").Default("default").String()
+	tunnelServerArgs.Route = tunnelServer.Flag("route", "local route to client's network, such as: PROTOCOL://LOCAL_IP:LOCAL_PORT@[CLIENT_KEY]CLIENT_LOCAL_HOST:CLIENT_LOCAL_PORT").Short('r').Default("").Strings()
+
+	//########tunnel-client#########
+	tunnelClient := app.Command("tclient", "proxy on tunnel client mode")
+	tunnelClientArgs.Parent = tunnelClient.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	tunnelClientArgs.CertFile = tunnelClient.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tunnelClientArgs.KeyFile = tunnelClient.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tunnelClientArgs.Timeout = tunnelClient.Flag("timeout", "tcp timeout with milliseconds").Short('t').Default("2000").Int()
+	tunnelClientArgs.Key = tunnelClient.Flag("k", "key same with server").Default("default").String()
+
+	//########tunnel-bridge#########
+	tunnelBridge := app.Command("tbridge", "proxy on tunnel bridge mode")
+	tunnelBridgeArgs.CertFile = tunnelBridge.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tunnelBridgeArgs.KeyFile = tunnelBridge.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tunnelBridgeArgs.Timeout = tunnelBridge.Flag("timeout", "tcp timeout with milliseconds").Short('t').Default("2000").Int()
+	tunnelBridgeArgs.Local = tunnelBridge.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+
+	//########ssh#########
+	socks := app.Command("socks", "proxy on ssh mode")
+	socksArgs.Parent = socks.Flag("parent", "parent ssh address, such as: \"23.32.32.19:22\"").Default("").Short('P').String()
+	socksArgs.ParentType = socks.Flag("parent-type", "parent protocol type <tls|tcp|kcp|ssh>").Default("tcp").Short('T').Enum("tls", "tcp", "kcp", "ssh")
+	socksArgs.LocalType = socks.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	socksArgs.Local = socks.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+	socksArgs.CertFile = socks.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	socksArgs.CaCertFile = socks.Flag("ca", "ca cert file for tls").Default("").String()
+	socksArgs.KeyFile = socks.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	socksArgs.SSHUser = socks.Flag("ssh-user", "user for ssh").Short('u').Default("").String()
+	socksArgs.SSHKeyFile = socks.Flag("ssh-key", "private key file for ssh").Short('S').Default("").String()
+	socksArgs.SSHKeyFileSalt = socks.Flag("ssh-keysalt", "salt of ssh private key").Short('s').Default("").String()
+	socksArgs.SSHPassword = socks.Flag("ssh-password", "password for ssh").Short('A').Default("").String()
+	socksArgs.Always = socks.Flag("always", "always use parent proxy").Default("false").Bool()
+	socksArgs.Timeout = socks.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Default("5000").Int()
+	socksArgs.Interval = socks.Flag("interval", "check domain if blocked every interval seconds").Default("10").Int()
+	socksArgs.Blocked = socks.Flag("blocked", "blocked domain file , one domain each line").Default("blocked").Short('b').String()
+	socksArgs.Direct = socks.Flag("direct", "direct domain file , one domain each line").Default("direct").Short('d').String()
+	socksArgs.AuthFile = socks.Flag("auth-file", "http basic auth file,\"username:password\" each line in file").Short('F').String()
+	socksArgs.Auth = socks.Flag("auth", "socks auth username and password, mutiple user repeat -a ,such as: -a user1:pass1 -a user2:pass2").Short('a').Strings()
+	socksArgs.LocalIPS = socks.Flag("local-bind-ips", "if your host behind a nat,set your public ip here avoid dead loop").Short('g').Strings()
+	socksArgs.AuthURL = socks.Flag("auth-url", "auth username and password will send to this url,response http code equal to 'auth-code' means ok,others means fail.").Default("").String()
+	socksArgs.AuthURLTimeout = socks.Flag("auth-timeout", "access 'auth-url' timeout milliseconds").Default("3000").Int()
+	socksArgs.AuthURLOkCode = socks.Flag("auth-code", "access 'auth-url' success http code").Default("204").Int()
+	socksArgs.AuthURLRetry = socks.Flag("auth-retry", "access 'auth-url' fail and retry count").Default("0").Int()
+	socksArgs.DNSAddress = socks.Flag("dns-address", "if set this, proxy will use this dns for resolve doamin").Short('q').Default("").String()
+	socksArgs.DNSTTL = socks.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	socksArgs.LocalKey = socks.Flag("local-key", "the password for auto encrypt/decrypt local connection data").Short('z').Default("").String()
+	socksArgs.ParentKey = socks.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	socksArgs.LocalCompress = socks.Flag("local-compress", "auto compress/decompress data on local connection").Short('m').Default("false").Bool()
+	socksArgs.ParentCompress = socks.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+
+	//########socks+http(s)#########
+	sps := app.Command("sps", "proxy on socks+http(s) mode")
+	spsArgs.Parent = sps.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	spsArgs.CertFile = sps.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	spsArgs.KeyFile = sps.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	spsArgs.CaCertFile = sps.Flag("ca", "ca cert file for tls").Default("").String()
+	spsArgs.Timeout = sps.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Short('i').Default("2000").Int()
+	spsArgs.ParentType = sps.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Short('T').Enum("tls", "tcp", "kcp")
+	spsArgs.LocalType = sps.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	spsArgs.Local = sps.Flag("local", "local ip:port to listen,multiple address use comma split,such as: 0.0.0.0:80,0.0.0.0:443").Short('p').Default(":33080").String()
+	spsArgs.ParentServiceType = sps.Flag("parent-service-type", "parent service type <http|socks>").Short('S').Enum("http", "socks")
+	spsArgs.DNSAddress = sps.Flag("dns-address", "if set this, proxy will use this dns for resolve doamin").Short('q').Default("").String()
+	spsArgs.DNSTTL = sps.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	spsArgs.AuthFile = sps.Flag("auth-file", "http basic auth file,\"username:password\" each line in file").Short('F').String()
+	spsArgs.Auth = sps.Flag("auth", "socks auth username and password, mutiple user repeat -a ,such as: -a user1:pass1 -a user2:pass2").Short('a').Strings()
+	spsArgs.LocalIPS = sps.Flag("local-bind-ips", "if your host behind a nat,set your public ip here avoid dead loop").Short('g').Strings()
+	spsArgs.AuthURL = sps.Flag("auth-url", "auth username and password will send to this url,response http code equal to 'auth-code' means ok,others means fail.").Default("").String()
+	spsArgs.AuthURLTimeout = sps.Flag("auth-timeout", "access 'auth-url' timeout milliseconds").Default("3000").Int()
+	spsArgs.AuthURLOkCode = sps.Flag("auth-code", "access 'auth-url' success http code").Default("204").Int()
+	spsArgs.AuthURLRetry = sps.Flag("auth-retry", "access 'auth-url' fail and retry count").Default("0").Int()
+	spsArgs.ParentAuth = sps.Flag("parent-auth", "parent socks auth username and password, such as: -A user1:pass1").Short('A').String()
+	spsArgs.LocalKey = sps.Flag("local-key", "the password for auto encrypt/decrypt local connection data").Short('z').Default("").String()
+	spsArgs.ParentKey = sps.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	spsArgs.LocalCompress = sps.Flag("local-compress", "auto compress/decompress data on local connection").Short('m').Default("false").Bool()
+	spsArgs.ParentCompress = sps.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+	spsArgs.DisableHTTP = sps.Flag("disable-http", "disable http(s) proxy").Default("false").Bool()
+	spsArgs.DisableSocks5 = sps.Flag("disable-socks", "disable socks proxy").Default("false").Bool()
+
+	//########dns#########
+	dns := app.Command("dns", "proxy on dns server mode")
+	dnsArgs.Parent = dns.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	dnsArgs.CertFile = dns.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	dnsArgs.KeyFile = dns.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	dnsArgs.CaCertFile = dns.Flag("ca", "ca cert file for tls").Default("").String()
+	dnsArgs.Timeout = dns.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Short('i').Default("2000").Int()
+	dnsArgs.ParentType = dns.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Short('T').Enum("tls", "tcp", "kcp")
+	dnsArgs.Local = dns.Flag("local", "local ip:port to listen,multiple address use comma split,such as: 0.0.0.0:80,0.0.0.0:443").Short('p').Default(":53").String()
+	dnsArgs.ParentServiceType = dns.Flag("parent-service-type", "parent service type <http|socks>").Short('S').Enum("http", "socks")
+	dnsArgs.RemoteDNSAddress = dns.Flag("dns-address", "remote dns for resolve doamin").Short('q').Default("8.8.8.8:53").String()
+	dnsArgs.DNSTTL = dns.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	dnsArgs.ParentAuth = dns.Flag("parent-auth", "parent socks auth username and password, such as: -A user1:pass1").Short('A').String()
+	dnsArgs.ParentKey = dns.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	dnsArgs.ParentCompress = dns.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+	dnsArgs.CacheFile = dns.Flag("cache-file", "dns result cached file").Short('f').Default(filepath.Join(path.Dir(os.Args[0]), "cache.dat")).String()
+	dnsArgs.LocalSocks5Port = dns.Flag("socks-port", "local socks5 port").Short('s').Default("65501").String()
+
+	//########keygen#########
+	keygen := app.Command("keygen", "create certificate for proxy")
+	keygenArgs.CommonName = keygen.Flag("cn", "common name").Short('n').Default("").String()
+	keygenArgs.CaName = keygen.Flag("ca", "ca name").Short('C').Default("").String()
+	keygenArgs.CertName = keygen.Flag("cert", "cert name of sign to create").Short('c').Default("").String()
+	keygenArgs.SignDays = keygen.Flag("days", "days of sign").Short('d').Default("365").Int()
+	keygenArgs.Sign = keygen.Flag("sign", "cert is to signin").Short('s').Default("false").Bool()
+
+	//parse args
+	serviceName := kingpin.MustParse(app.Parse(os.Args[1:]))
+
+	isDebug = *debug
+
+	//set kcp config
+
+	switch *kcpArgs.Mode {
+	case "normal":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 0, 40, 2, 1
+	case "fast":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 0, 30, 2, 1
+	case "fast2":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 1, 20, 2, 1
+	case "fast3":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 1, 10, 2, 1
+	}
+	pass := pbkdf2.Key([]byte(*kcpArgs.Key), []byte("snail007-goproxy"), 4096, 32, sha1.New)
+
+	switch *kcpArgs.Crypt {
+	case "sm4":
+		kcpArgs.Block, _ = kcp.NewSM4BlockCrypt(pass[:16])
+	case "tea":
+		kcpArgs.Block, _ = kcp.NewTEABlockCrypt(pass[:16])
+	case "xor":
+		kcpArgs.Block, _ = kcp.NewSimpleXORBlockCrypt(pass)
+	case "none":
+		kcpArgs.Block, _ = kcp.NewNoneBlockCrypt(pass)
+	case "aes-128":
+		kcpArgs.Block, _ = kcp.NewAESBlockCrypt(pass[:16])
+	case "aes-192":
+		kcpArgs.Block, _ = kcp.NewAESBlockCrypt(pass[:24])
+	case "blowfish":
+		kcpArgs.Block, _ = kcp.NewBlowfishBlockCrypt(pass)
+	case "twofish":
+		kcpArgs.Block, _ = kcp.NewTwofishBlockCrypt(pass)
+	case "cast5":
+		kcpArgs.Block, _ = kcp.NewCast5BlockCrypt(pass[:16])
+	case "3des":
+		kcpArgs.Block, _ = kcp.NewTripleDESBlockCrypt(pass[:24])
+	case "xtea":
+		kcpArgs.Block, _ = kcp.NewXTEABlockCrypt(pass[:16])
+	case "salsa20":
+		kcpArgs.Block, _ = kcp.NewSalsa20BlockCrypt(pass)
+	default:
+		*kcpArgs.Crypt = "aes"
+		kcpArgs.Block, _ = kcp.NewAESBlockCrypt(pass)
+	}
+	//attach kcp config
+	tcpArgs.KCP = kcpArgs
+	httpArgs.KCP = kcpArgs
+	socksArgs.KCP = kcpArgs
+	spsArgs.KCP = kcpArgs
+	muxBridgeArgs.KCP = kcpArgs
+	muxServerArgs.KCP = kcpArgs
+	muxClientArgs.KCP = kcpArgs
+	dnsArgs.KCP = kcpArgs
+
+	log := logger.New(os.Stderr, "", logger.Ldate|logger.Ltime)
+
+	flags := logger.Ldate
+	if *debug {
+		flags |= logger.Lshortfile | logger.Lmicroseconds
+		cpuProfilingFile, _ = os.Create("cpu.prof")
+		memProfilingFile, _ = os.Create("memory.prof")
+		blockProfilingFile, _ = os.Create("block.prof")
+		goroutineProfilingFile, _ = os.Create("goroutine.prof")
+		threadcreateProfilingFile, _ = os.Create("threadcreate.prof")
+		pprof.StartCPUProfile(cpuProfilingFile)
+	} else {
+		flags |= logger.Ltime
+	}
+	log.SetFlags(flags)
+
+	if *logfile != "" {
+		f, e := os.OpenFile(*logfile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0600)
+		if e != nil {
+			log.Fatal(e)
+		}
+		log.SetOutput(f)
+	}
+	if *daemon {
+		args := []string{}
+		for _, arg := range os.Args[1:] {
+			if arg != "--daemon" {
+				args = append(args, arg)
+			}
+		}
+		cmd = exec.Command(os.Args[0], args...)
+		cmd.Start()
+		f := ""
+		if *forever {
+			f = "forever "
+		}
+		log.Printf("%s%s [PID] %d running...\n", f, os.Args[0], cmd.Process.Pid)
+		os.Exit(0)
+	}
+	if *forever {
+		args := []string{}
+		for _, arg := range os.Args[1:] {
+			if arg != "--forever" {
+				args = append(args, arg)
+			}
+		}
+		go func() {
+			for {
+				if cmd != nil {
+					cmd.Process.Kill()
+				}
+				cmd = exec.Command(os.Args[0], args...)
+				cmdReaderStderr, err := cmd.StderrPipe()
+				if err != nil {
+					log.Printf("ERR:%s,restarting...\n", err)
+					continue
+				}
+				cmdReader, err := cmd.StdoutPipe()
+				if err != nil {
+					log.Printf("ERR:%s,restarting...\n", err)
+					continue
+				}
+				scanner := bufio.NewScanner(cmdReader)
+				scannerStdErr := bufio.NewScanner(cmdReaderStderr)
+				go func() {
+					for scanner.Scan() {
+						fmt.Println(scanner.Text())
+					}
+				}()
+				go func() {
+					for scannerStdErr.Scan() {
+						fmt.Println(scannerStdErr.Text())
+					}
+				}()
+				if err := cmd.Start(); err != nil {
+					log.Printf("ERR:%s,restarting...\n", err)
+					continue
+				}
+				pid := cmd.Process.Pid
+				log.Printf("worker %s [PID] %d running...\n", os.Args[0], pid)
+				if err := cmd.Wait(); err != nil {
+					log.Printf("ERR:%s,restarting...", err)
+					continue
+				}
+				log.Printf("worker %s [PID] %d unexpected exited, restarting...\n", os.Args[0], pid)
+				time.Sleep(time.Second * 5)
+			}
+		}()
+		return
+	}
+	if *logfile == "" {
+		poster()
+		if *debug {
+			log.Println("[profiling] cpu profiling save to file : cpu.prof")
+			log.Println("[profiling] memory profiling save to file : memory.prof")
+			log.Println("[profiling] block profiling save to file : block.prof")
+			log.Println("[profiling] goroutine profiling save to file : goroutine.prof")
+			log.Println("[profiling] threadcreate profiling save to file : threadcreate.prof")
+		}
+	}
+	//regist services and run service
+	//regist services and run service
+	switch serviceName {
+	case "http":
+		services.Regist(serviceName, httpx.NewHTTP(), httpArgs, log)
+	case "tcp":
+		services.Regist(serviceName, tcpx.NewTCP(), tcpArgs, log)
+	case "udp":
+		services.Regist(serviceName, udpx.NewUDP(), udpArgs, log)
+	case "tserver":
+		services.Regist(serviceName, tunnel.NewTunnelServerManager(), tunnelServerArgs, log)
+	case "tclient":
+		services.Regist(serviceName, tunnel.NewTunnelClient(), tunnelClientArgs, log)
+	case "tbridge":
+		services.Regist(serviceName, tunnel.NewTunnelBridge(), tunnelBridgeArgs, log)
+	case "server":
+		services.Regist(serviceName, mux.NewMuxServerManager(), muxServerArgs, log)
+	case "client":
+		services.Regist(serviceName, mux.NewMuxClient(), muxClientArgs, log)
+	case "bridge":
+		services.Regist(serviceName, mux.NewMuxBridge(), muxBridgeArgs, log)
+	case "socks":
+		services.Regist(serviceName, socksx.NewSocks(), socksArgs, log)
+	case "sps":
+		services.Regist(serviceName, spsx.NewSPS(), spsArgs, log)
+	case "dns":
+		services.Regist(serviceName, sdk.NewDNS(), dnsArgs, log)
+	case "keygen":
+		services.Regist(serviceName, keygenx.NewKeygen(), keygenArgs, log)
+	}
+
+	service, err = services.Run(serviceName, nil)
+	if err != nil {
+		log.Fatalf("run service [%s] fail, ERR:%s", serviceName, err)
+	}
+	return
+}
+
+func poster() {
+	fmt.Printf(`
+		########  ########   #######  ##     ## ##    ## 
+		##     ## ##     ## ##     ##  ##   ##   ##  ##  
+		##     ## ##     ## ##     ##   ## ##     ####   
+		########  ########  ##     ##    ###       ##    
+		##        ##   ##   ##     ##   ## ##      ##    
+		##        ##    ##  ##     ##  ##   ##     ##    
+		##        ##     ##  #######  ##     ##    ##    
+		
+		v%s`+" by snail , blog : http://www.host900.com/\n\n", APP_VERSION)
+}
+func saveProfiling() {
+	goroutine := pprof.Lookup("goroutine")
+	goroutine.WriteTo(goroutineProfilingFile, 1)
+	heap := pprof.Lookup("heap")
+	heap.WriteTo(memProfilingFile, 1)
+	block := pprof.Lookup("block")
+	block.WriteTo(blockProfilingFile, 1)
+	threadcreate := pprof.Lookup("threadcreate")
+	threadcreate.WriteTo(threadcreateProfilingFile, 1)
+	pprof.StopCPUProfile()
+}

direct

@@ -0,0 +1,456 @@
+07073.com
+10010.com
+100ye.com
+114la.com
+115.com
+120ask.com
+126.com
+126.net
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+ad1111.com
+admin5.com
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+adobe.com
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+adsame.com
+adsonar.com
+adtechus.com
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+alimama.com
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+alisoft.com
+alivv.com
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+amazon.com
+anjuke.com
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+aol.com
+apple.com
+arpg2.com
+atdmt.com
+b2b168.com
+babytree.com
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+baixing.com
+bankcomm.com
+baomihua.com
+bdimg.com
+bdstatic.com
+bendibao.com
+betrad.com
+bilibili.tv
+bing.com
+bitauto.com
+blog.163.com
+blogchina.com
+blueidea.com
+bluekai.com
+booksky.org
+caixin.com
+ccb.com
+ccidnet.com
+cctv*.com
+china.com
+chinabyte.com
+chinahr.com
+chinanews.com
+chinaw3.com
+chinaz.com
+chuangelm.com
+ci123.com
+cmbchina.com
+cnbeta.com
+cnblogs.com
+cncn.com
+cnhubei.com
+cnki.net
+cnmo.com
+cnxad.com
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+compete.com
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+cqnews.net
+crsky.com
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+ct10000.com
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+dangdang.com
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+ddmap.com
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+discuz.net
+doc88.com
+docin.com
+donews.com
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+duote.com
+duowan.com
+dzwww.com
+eastday.com
+eastmoney.com
+ebay.com
+elong.com
+ename.net
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+eye.rs
+fantong.com
+fastcdn.com
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+flickr.com
+fobshanghai.com
+ftuan.com
+funshion.com
+fx120.net
+game3737.com
+gamersky.com
+gamestlbb.com
+gamesville.com
+ganji.com
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+hao123.com
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+harrenmedianetwork.com
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+yiqifa.com
+ykimg.com
+ynet.com
+yoka.com
+yolk7.com
+youboy.com
+youdao.com
+yougou.com
+youku.com
+youshang.com
+yupoo.com
+yxlady.com
+yyets.com
+zhaodao123.com
+zhaopin.com
+zhenai.com
+zhibo8.cc
+zhihu.com
+zhubajie.com
+zongheng.com
+zoosnet.net
+zqgame.com
+ztgame.com
+zx915.com

docs/faststart.md

@@ -1,40 +0,0 @@
-这里以vps centos 64位为例子  
-Linux 部分  
-1.Putty工具（或其他工具）  
-root登入  
-2.下载批量命令文件install_auto.sh（64位的话直接执行这个命令即可）    
-#curl -L https://raw.githubusercontent.com/snail007/goproxy/master/install_auto.sh | bash  
-注意  
-这里的install_auto.sh 源码可以下载修改proxy版本,保存后执行.  
-<img src="https://github.com/snail007/goproxy/blob/master/docs/images/image001.png?raw=true"/>  
-3.修改/etc/proxy/proxy.toml配置文件   
-<img src="https://github.com/snail007/goproxy/blob/master/docs/images/image002.png?raw=true"/>
-<img src="https://github.com/snail007/goproxy/blob/master/docs/images/image003.png?raw=true"/>
-<img src="https://github.com/snail007/goproxy/blob/master/docs/images/image004.png?raw=true"/>  
-#/usr/bin/proxyd status  
-如果未运行那么执行调试命令：/usr/bin/proxy   
-如果一切正常,可以使用proxyd命令管理proxy,执行 proxyd 可以查看用法.
-后台启动proxy: proxyd start
-4.下载证书加密文件/etc/proxy/proxy.crt和/etc/proxy/proxy.key到windows  
-Windows部分  
-5.https://github.com/snail007/goproxy/releases 下载对应windows版本   
-<img src="https://github.com/snail007/goproxy/blob/master/docs/images/image005.jpg?raw=true"/>  
-<img src="https://github.com/snail007/goproxy/blob/master/docs/images/image006.png?raw=true"/>  
-我的是d：盘  
-6.修改windows下的proxy.toml  vps服务ip和上面设置的端口哦  
-<img src="https://github.com/snail007/goproxy/blob/master/docs/images/image007.png?raw=true"/>  
-然后运行proxy.exe即可.  
-这时候浏览器代理服务器就是127.0.0.1:9501啦,完毕!  
-
-要隐藏windows命令用工具下载RunHiddenConsole.exe 写个bat文件都放proxy目录下就行
-Start.bat  
-
-@echo off  
-echo Starting  
-RunHiddenConsole D:/proxy/proxy.exe  
-
-Stop.bat  
-@echo off  
-echo Stopping  
-taskkill /F /IM proxy.exe > nul  
-exit  

docs/old-release.md

@@ -0,0 +1,23 @@
+# Old Versions of Proxy
+
+- [v5.1手册](https://github.com/snail007/goproxy/tree/v5.1) 
+- [v5.0手册](https://github.com/snail007/goproxy/tree/v5.0) 
+- [v4.9手册](https://github.com/snail007/goproxy/tree/v4.9) 
+- [v4.8手册](https://github.com/snail007/goproxy/tree/v4.8) 
+- [v4.7手册](https://github.com/snail007/goproxy/tree/v4.7) 
+- [v4.6手册](https://github.com/snail007/goproxy/tree/v4.6) 
+- [v4.5手册](https://github.com/snail007/goproxy/tree/v4.5) 
+- [v4.4手册](https://github.com/snail007/goproxy/tree/v4.4) 
+- [v4.3手册](https://github.com/snail007/goproxy/tree/v4.3) 
+- [v4.2手册](https://github.com/snail007/goproxy/tree/v4.2) 
+- [v4.0-v4.1手册](https://github.com/snail007/goproxy/tree/v4.1)
+- [v3.9手册](https://github.com/snail007/goproxy/tree/v3.9)
+- [v3.8手册](https://github.com/snail007/goproxy/tree/v3.8)
+- [v3.6-v3.7手册](https://github.com/snail007/goproxy/tree/v3.6)
+- [v3.5手册](https://github.com/snail007/goproxy/tree/v3.5)
+- [v3.4手册](https://github.com/snail007/goproxy/tree/v3.4)
+- [v3.3手册](https://github.com/snail007/goproxy/tree/v3.3)
+- [v3.2手册](https://github.com/snail007/goproxy/tree/v3.2)
+- [v3.1手册](https://github.com/snail007/goproxy/tree/v3.1)
+- [v3.0手册](https://github.com/snail007/goproxy/tree/v3.0)
+- [v2.x手册](https://github.com/snail007/goproxy/tree/v2.2) 

gui/README.md

@@ -0,0 +1,27 @@
+# Proxy-GUI
+基于proxy的各平台SDK,作者和众多热心人士开发了各平台的GUI版本的proxy,下面分平台介绍.  
+
+## Windows
+
+- 官方java版本,项目主页:[goproxy-jui](https://github.com/snail007/goproxy-jui)
+
+## Linux
+
+- 官方java版本,项目主页:[goproxy-jui](https://github.com/snail007/goproxy-jui)
+
+## MacOS
+
+- Coming Soon ...
+
+## Android
+
+- proxy-go,一个非官方实现版本,界面比较简陋,但是够用.下载地址:[proxy-go](https://github.com/snail007/goproxy-gui-stuff/releases/tag/proxy-go-release)
+
+
+## IOS
+
+- Coming Soon ...
+
+## 跨平台
+
+- proxy-web,一个跨平台的web UI版本,项目主页:[proxy-web](https://github.com/yincongcyincong/proxy-web)

install.sh

@@ -1,25 +1,14 @@
 #!/bin/bash
 set -e
-if [ -e /tmp/proxy ]; then
+
-    rm -rf /tmp/proxy
-fi
-mkdir /tmp/proxy
-cd /tmp/proxy
-# install monexec
-tar zxvf monexec_0.1.1_linux_amd64.tar.gz
-cd  monexec_0.1.1_linux_amd64
-cp monexec /usr/bin/
-chmod +x /usr/bin/monexec
-cd ..
 # #install proxy
 tar zxvf proxy-linux-amd64.tar.gz
 cp proxy /usr/bin/
-cp proxyd /usr/bin/
 chmod +x /usr/bin/proxy
-chmod +x /usr/bin/proxyd
 if [ ! -e /etc/proxy ]; then
     mkdir /etc/proxy
-    cp proxy.toml /etc/proxy/
+    cp blocked /etc/proxy
+    cp direct  /etc/proxy
 fi
 
 if [ ! -e /etc/proxy/proxy.crt ]; then
@@ -28,4 +17,4 @@ if [ ! -e /etc/proxy/proxy.crt ]; then
 fi
 rm -rf /tmp/proxy
 echo "install done"
-proxyd
+proxy help

install_auto.sh

@@ -5,30 +5,22 @@ if [ -e /tmp/proxy ]; then
 fi
 mkdir /tmp/proxy
 cd /tmp/proxy
-wget https://github.com/reddec/monexec/releases/download/v0.1.1/monexec_0.1.1_linux_amd64.tar.gz
+wget https://github.com/snail007/goproxy/releases/download/v5.2/proxy-linux-amd64.tar.gz
-wget https://github.com/snail007/goproxy/releases/download/v2.1/proxy-linux-amd64.tar.gz
 
-# install monexec
-tar zxvf monexec_0.1.1_linux_amd64.tar.gz
-cd  monexec_0.1.1_linux_amd64
-cp monexec /usr/bin/
-chmod +x /usr/bin/monexec
-cd ..
 # #install proxy
 tar zxvf proxy-linux-amd64.tar.gz
 cp proxy /usr/bin/
-cp proxyd /usr/bin/
 chmod +x /usr/bin/proxy
-chmod +x /usr/bin/proxyd
 if [ ! -e /etc/proxy ]; then
     mkdir /etc/proxy
-    cp proxy.toml /etc/proxy/
+    cp blocked /etc/proxy
+    cp direct  /etc/proxy
 fi
 
 if [ ! -e /etc/proxy/proxy.crt ]; then
     cd /etc/proxy/
-    proxy keygen >/dev/null 2>&1 
+    proxy keygen -C proxy >/dev/null 2>&1 
 fi
 rm -rf /tmp/proxy
 echo "install done"
-proxyd
+proxy help

keygen.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+openssl genrsa -out proxy.key 2048
+openssl req -new -key proxy.key -x509 -days 3650 -out proxy.crt -subj /C=CN/ST=BJ/O="Localhost Ltd"/CN=proxy

main.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/snail007/goproxy/services"
+)
+
+const APP_VERSION = "5.2"
+
+func main() {
+	err := initConfig()
+	if err != nil {
+		log.Fatalf("err : %s", err)
+	}
+	if service != nil && service.S != nil {
+		Clean(&service.S)
+	} else {
+		Clean(nil)
+	}
+}
+func Clean(s *services.Service) {
+	signalChan := make(chan os.Signal, 1)
+	cleanupDone := make(chan bool)
+	signal.Notify(signalChan,
+		os.Interrupt,
+		syscall.SIGHUP,
+		syscall.SIGINT,
+		syscall.SIGTERM,
+		syscall.SIGQUIT)
+	go func() {
+		for _ = range signalChan {
+			log.Println("Received an interrupt, stopping services...")
+			if s != nil && *s != nil {
+				(*s).Clean()
+			}
+			if cmd != nil {
+				log.Printf("clean process %d", cmd.Process.Pid)
+				cmd.Process.Kill()
+			}
+			if isDebug {
+				saveProfiling()
+			}
+			cleanupDone <- true
+		}
+	}()
+	<-cleanupDone
+}

release.sh

@@ -0,0 +1,74 @@
+#!/bin/bash
+VER="5.2"
+RELEASE="release-${VER}"
+rm -rf .cert
+mkdir .cert
+go build -o proxy 
+cd .cert
+../proxy keygen -C proxy
+cd ..
+rm -rf ${RELEASE}
+mkdir ${RELEASE}
+#linux
+CGO_ENABLED=0 GOOS=linux GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-386.tar.gz" proxy direct blocked
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-amd64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=6 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-arm-v6.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=arm64 GOARM=6 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-arm64-v6.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-arm-v7.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=arm64 GOARM=7 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-arm64-v7.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=5 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-arm-v5.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=arm64 GOARM=5 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-arm64-v5.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=mips go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-mips.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=mips64 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-mips64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=mips64le go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-mips64le.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=mipsle go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-mipsle.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=ppc64 go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-ppc64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=ppc64le go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-ppc64le.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=linux GOARCH=s390x go build -o proxy && tar zcfv "${RELEASE}/proxy-linux-s390x.tar.gz" proxy direct blocked 
+#android
+CGO_ENABLED=0 GOOS=android GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-android-386.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=android GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-android-amd64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=android GOARCH=arm go build -o proxy && tar zcfv "${RELEASE}/proxy-android-arm.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=android GOARCH=arm64 go build -o proxy && tar zcfv "${RELEASE}/proxy-android-arm64.tar.gz" proxy direct blocked 
+#darwin
+CGO_ENABLED=0 GOOS=darwin GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-darwin-386.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-darwin-amd64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=darwin GOARCH=arm go build -o proxy && tar zcfv "${RELEASE}/proxy-darwin-arm.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -o proxy && tar zcfv "${RELEASE}/proxy-darwin-arm64.tar.gz" proxy direct blocked 
+#dragonfly
+CGO_ENABLED=0 GOOS=dragonfly GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-dragonfly-amd64.tar.gz" proxy direct blocked 
+#freebsd
+CGO_ENABLED=0 GOOS=freebsd GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-freebsd-386.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-freebsd-amd64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=freebsd GOARCH=arm go build -o proxy && tar zcfv "${RELEASE}/proxy-freebsd-arm.tar.gz" proxy direct blocked 
+#nacl
+CGO_ENABLED=0 GOOS=nacl GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-nacl-386.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=nacl GOARCH=amd64p32 go build -o proxy && tar zcfv "${RELEASE}/proxy-nacl-amd64p32.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=nacl GOARCH=arm go build -o proxy && tar zcfv "${RELEASE}/proxy-nacl-arm.tar.gz" proxy direct blocked 
+#netbsd
+CGO_ENABLED=0 GOOS=netbsd GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-netbsd-386.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=netbsd GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-netbsd-amd64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=netbsd GOARCH=arm go build -o proxy && tar zcfv "${RELEASE}/proxy-netbsd-arm.tar.gz" proxy direct blocked 
+#openbsd
+CGO_ENABLED=0 GOOS=openbsd GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-openbsd-386.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=openbsd GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-openbsd-amd64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=openbsd GOARCH=arm go build -o proxy && tar zcfv "${RELEASE}/proxy-openbsd-arm.tar.gz" proxy direct blocked 
+#plan9
+CGO_ENABLED=0 GOOS=plan9 GOARCH=386 go build -o proxy && tar zcfv "${RELEASE}/proxy-plan9-386.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=plan9 GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-plan9-amd64.tar.gz" proxy direct blocked 
+CGO_ENABLED=0 GOOS=plan9 GOARCH=arm go build -o proxy && tar zcfv "${RELEASE}/proxy-plan9-arm.tar.gz" proxy direct blocked 
+#solaris
+CGO_ENABLED=0 GOOS=solaris GOARCH=amd64 go build -o proxy && tar zcfv "${RELEASE}/proxy-solaris-amd64.tar.gz" proxy direct blocked 
+#windows
+CGO_ENABLED=0 GOOS=windows GOARCH=386 go build  -ldflags="-H=windowsgui" -o proxy-wingui.exe
+CGO_ENABLED=0 GOOS=windows GOARCH=386 go build -o proxy.exe && tar zcfv "${RELEASE}/proxy-windows-386.tar.gz" proxy.exe proxy-wingui.exe direct blocked .cert/proxy.crt .cert/proxy.key
+CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="-H=windowsgui" -o proxy-wingui.exe
+CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -o proxy.exe && tar zcfv "${RELEASE}/proxy-windows-amd64.tar.gz" proxy.exe proxy-wingui.exe direct blocked .cert/proxy.crt .cert/proxy.key
+
+rm -rf proxy proxy.exe proxy-wingui.exe .cert
+
+#todo
+#1.release.sh        VER="xxx"
+#2.main.go           APP_VERSION="xxx"
+#3.install_auto.sh   goproxy/releases/download/vxxx
+#4.README            goproxy/releases/download/vxxx

sdk/CHANGELOG

@@ -0,0 +1,10 @@
+SDK更新日志
+
+v4.9
+1.修复了HTTP Basic代理返回不合适的头部,导致浏览器不会弹框,个别代理插件无法认证的问题.
+2.内网穿透切换smux到yamux.
+3.优化了HTTP(S)\SOCKS5代理--always的处理逻辑.
+
+v4.8
+1.修复了多个服务同时开启日志,只会输出到最后一个日志文件的bug.  
+2.增加了获取sdk版本的Version()方法.  

sdk/README.md

@@ -0,0 +1,259 @@
+
+# Proxy SDK 使用说明  
+
+支持以下平台:  
+- Android,`.arr`库
+- IOS,`.framework`库
+- Windows,`.dll`库
+- Linux,`.so`库
+- MacOS,`.dylib`库
+
+proxy使用gombile实现了一份go代码编译为android和ios平台下面可以直接调用的sdk类库, 
+另外还为linux和windows,MacOS提供sdk支持，基于这些类库,APP开发者可以轻松的开发出各种形式的代理工具。    
+
+# 下面分平台介绍SDK的用法  
+
+## Android SDK
+  
+[![stable](https://img.shields.io/badge/stable-stable-green.svg)](https://github.com/snail007/goproxy-sdk-android/) [![license](https://img.shields.io/github/license/snail007/goproxy-sdk-android.svg?style=plastic)]() [![download_count](https://img.shields.io/github/downloads/snail007/goproxy-sdk-android/total.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-android/releases) [![download](https://img.shields.io/github/release/snail007/goproxy-sdk-android.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-android/releases)  
+  
+[点击下载Android-SDK](https://github.com/snail007/goproxy-sdk-android/releases)  
+在Android系统提供的sdk形式是一个后缀为.aar的类库文件,开发的时候只需要把arr类库文件引入android项目即可.  
+
+### Android-SDK使用实例
+
+#### 1.导入包
+
+```java
+import snail007.proxy.Porxy
+```
+
+#### 2.启动一个服务
+
+```java
+String serviceID="http01";//这里serviceID是自定义的唯一标识字符串,保证每个启动的服务不一样即可
+String serviceArgs="http -p :8080";
+String err=Proxy.start(serviceID,serviceArgs);
+if (!err.isEmpty()){
+    //启动失败
+    System.out.println("start fail,error:"+err);
+}else{
+    //启动成功
+}
+```
+
+#### 3.停止一个服务
+
+```java
+String serviceID="http01";
+Proxy.stop(serviceID);
+//停止完毕
+
+```
+
+## IOS SDK
+  
+[![stable](https://img.shields.io/badge/stable-stable-green.svg)](https://github.com/snail007/goproxy-sdk-ios/) [![license](https://img.shields.io/github/license/snail007/goproxy-sdk-ios.svg?style=plastic)]() [![download_count](https://img.shields.io/github/downloads/snail007/goproxy-sdk-ios/total.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-ios/releases) [![download](https://img.shields.io/github/release/snail007/goproxy-sdk-ios.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-ios/releases)  
+  
+[点击下载IOS-SDK](https://github.com/snail007/goproxy-sdk-ios/releases)  
+在IOS系统提供的sdk形式是一个后缀为.framework的类库文件夹,开发的时候只需要把类库文件引入项目,然后调用方法即可.  
+
+### IOS-SDK使用实例
+
+#### 导入包
+
+```objc
+#import <Proxy/Proxy.objc.h>
+```
+
+#### 2.启动一个服务
+
+```objc
+-(IBAction)doStart:(id)sender
+{
+	//这里serviceID是自定义的唯一标识字符串,保证每个启动的服务不一样
+	NSString *serviceID = @"http01";
+    NSString *serviceArgs = @"http -p :8080";
+    NSString *error = ProxyStart(serviceID,serviceArgs);
+    
+    if (error != nil && error.length > 0)
+    {
+        NSLog(@"start error %@",error);
+    }else{
+        NSLog(@"启动成功");
+    }
+}
+```
+
+#### 3.停止一个服务
+
+```objc
+-(IBAction)doStop:(id)sender
+{
+    NSString *serviceID = @"http01";
+    ProxyStop(serviceID);
+    //停止完毕
+}
+```
+
+
+## Windows SDK
+[![stable](https://img.shields.io/badge/stable-stable-green.svg)](https://github.com/snail007/goproxy-sdk-windows/) [![license](https://img.shields.io/github/license/snail007/goproxy-sdk-windows.svg?style=plastic)]() [![download_count](https://img.shields.io/github/downloads/snail007/goproxy-sdk-windows/total.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-windows/releases) [![download](https://img.shields.io/github/release/snail007/goproxy-sdk-windows.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-windows/releases)  
+  
+[点击下载Windows-SDK](https://github.com/snail007/goproxy-sdk-windows/releases)  
+在Windows系统提供的sdk形式是一个后缀为.dll的类库文件,开发的时候只需要把dll类库文件加载,然后调用方法即可.  
+
+### Windows-SDK使用实例  
+C++示例，不需要包含头文件，只需要加载proxy-sdk.dll即可，ieshims.dll需要和proxy-sdk.dll在一起。  
+作者：[yjbdsky](https://github.com/yjbdsky)     
+
+```cpp
+#include <stdio.h>
+#include<stdlib.h>
+#include <string.h>
+#include<pthread.h>
+#include<Windows.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef char *(*GOSTART)(char *s);
+typedef char *(*GOSTOP)(char *s);
+typedef int(*GOISRUN)(char *s);
+HMODULE GODLL = LoadLibrary("proxy-sdk.dll");
+
+char * Start(char * p0,char * p1)
+{
+	if (GODLL != NULL)
+	{
+		GOSTART gostart = *(GOSTART)(GetProcAddress(GODLL, "Start"));
+		if (gostart != NULL){
+			printf("%s:%s\n",p0, p1);
+			char *ret = gostart(p0,p1);
+			return ret;
+		}
+	}
+	return "Cannot Find dll";
+}
+char * Stop(char * p)
+{
+	if (GODLL != NULL)
+	{
+		GOSTOP gostop = *(GOSTOP)(GetProcAddress(GODLL, "Stop"));
+		if (gostop != NULL){
+			printf("%s\n", p);
+			char *ret = gostop(p);
+			return ret;
+		}
+	}
+	return "Cannot Find dll";
+}
+
+int main()
+{
+	//这里p0是自定义的唯一标识字符串,保证每个启动的服务不一样
+	char *p0 = "http01";
+	char *p1 = "http -t tcp -p :38080";
+	printf("This is demo application.\n");
+	//启动服务,返回空字符串说明启动成功;返回非空字符串说明启动失败,返回的字符串是错误原因
+	printf("start result %s\n", Start(p0,p1));
+	//停止服务,没有返回值
+	Stop(p0);
+	return 0;
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+```
+
+C++示例2，请移步：[GoProxyForC](https://github.com/SuperPowerLF2/GoProxyForC)   
+
+## Linux SDK
+[![stable](https://img.shields.io/badge/stable-stable-green.svg)](https://github.com/snail007/goproxy-sdk-linux/) [![license](https://img.shields.io/github/license/snail007/goproxy-sdk-linux.svg?style=plastic)]() [![download_count](https://img.shields.io/github/downloads/snail007/goproxy-sdk-linux/total.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-linux/releases) [![download](https://img.shields.io/github/release/snail007/goproxy-sdk-linux.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-linux/releases)  
+  
+[点击下载Linux-SDK](https://github.com/snail007/goproxy-sdk-linux/releases)  
+在Linux系统提供的sdk形式是一个后缀为.so的类库文件,开发的时候只需要把so类库加载,调用方法即可.  
+
+### Linux-SDK使用实例
+Linux下面使用的sdk是so文件即libproxy-sdk.so,下面写一个简单的C程序示例,调用so库里面的方法.  
+
+`vi test-proxy.c`  
+
+```c
+#include <stdio.h>
+#include "libproxy-sdk.h"
+
+int main() {
+     printf("This is demo application.\n");
+	 //这里p0是自定义的唯一标识字符串,保证每个启动的服务不一样
+	 char *p0 = "http01";
+     char *p1 = "http -t tcp -p :38080";
+     //启动服务,返回空字符串说明启动成功;返回非空字符串说明启动失败,返回的字符串是错误原因
+     printf("start result %s\n",Start(p0,p1));
+     //停止服务,没有返回值
+     Stop(p0);
+     return 0;
+}
+```
+
+#### 编译test-proxy.c ####  
+`export LD_LIBRARY_PATH=./ && gcc -o test-proxy test.c libproxy-sdk.so`  
+
+#### 执行 ####  
+`./test-proxy`  
+
+## MacOS SDK
+[![stable](https://img.shields.io/badge/stable-stable-green.svg)](https://github.com/snail007/goproxy-sdk-mac/) [![license](https://img.shields.io/github/license/snail007/goproxy-sdk-mac.svg?style=plastic)]() [![download_count](https://img.shields.io/github/downloads/snail007/goproxy-sdk-mac/total.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-mac/releases) [![download](https://img.shields.io/github/release/snail007/goproxy-sdk-mac.svg?style=plastic)](https://github.com/snail007/goproxy-sdk-mac/releases)  
+  
+[点击下载MacOS-SDK](https://github.com/snail007/goproxy-sdk-mac/releases)  
+在MacOS系统提供的sdk形式是一个后缀为.dylib的类库文件,开发的时候只需要把so类库加载,调用方法即可.  
+
+### MacOS-SDK使用实例
+MacOS下面使用的sdk是dylib文件即libproxy-sdk.dylib,下面写一个简单的Obj-C程序示例,调用dylib库里面的方法.  
+
+```objc
+#import "libproxy-sdk.h"
+-(IBAction)doStart:(id)sender
+{
+    char *result =  Start("http01", "http -t tcp -p :38080");
+    
+    if (result)
+    {
+        printf("started");
+    }else{
+        printf("not started");
+    }
+  
+}
+-(IBAction)doStop:(id)sender
+{
+     Stop("http01");
+
+}
+```
+
+### 关于服务  
+proxy的服务有11种,分别是:  
+
+```shell
+http  
+socks  
+sps  
+tcp  
+udp  
+bridge  
+server  
+client  
+tbridge  
+tserver  
+tclient  
+```
+服务启动时,如果存在正在运行的相同ID的服务,那么之前的服务会被停掉,后面启动的服务覆盖之前的服务.  
+所以要保证每次启动服务的时候,第一个ID参数唯一.  
+上面这些服务的具体使用方式和具体参数,可以参考[proxy手册](https://github.com/snail007/goproxy/blob/master/README_ZH.md)  
+sdk里面的服务不支持手册里面的：--daemon和--forever参数.  
+
+

sdk/android-ios/.gitignore

@@ -0,0 +1,7 @@
+*.jar
+*.aar
+*.tar.gz
+ios
+android
+Proxy.framework
+  

sdk/android-ios/dns.go

@@ -0,0 +1,256 @@
+package proxy
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"fmt"
+	logger "log"
+	"net"
+	"runtime/debug"
+	"time"
+
+	"golang.org/x/net/proxy"
+
+	"github.com/miekg/dns"
+	gocache "github.com/pmylund/go-cache"
+	services "github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+)
+
+type DNSArgs struct {
+	ParentServiceType *string
+	ParentType        *string
+	Parent            *string
+	ParentAuth        *string
+	ParentKey         *string
+	ParentCompress    *bool
+	KCP               kcpcfg.KCPConfigArgs
+	CertFile          *string
+	KeyFile           *string
+	CaCertFile        *string
+	Local             *string
+	Timeout           *int
+	RemoteDNSAddress  *string
+	DNSTTL            *int
+	CacheFile         *string
+	LocalSocks5Port   *string
+}
+type DNS struct {
+	cfg        DNSArgs
+	log        *logger.Logger
+	cache      *gocache.Cache
+	exitSig    chan bool
+	serviceKey string
+	dialer     proxy.Dialer
+}
+
+func NewDNS() services.Service {
+	return &DNS{
+		cfg:        DNSArgs{},
+		exitSig:    make(chan bool, 1),
+		serviceKey: "dns-service-" + fmt.Sprintf("%d", time.Now().UnixNano()),
+	}
+}
+func (s *DNS) CheckArgs() (err error) {
+	return
+}
+func (s *DNS) InitService() (err error) {
+	s.cache = gocache.New(time.Second*time.Duration(*s.cfg.DNSTTL), time.Second*60)
+	s.cache.LoadFile(*s.cfg.CacheFile)
+	go func() {
+		for {
+			select {
+			case <-s.exitSig:
+				return
+			case <-time.After(time.Second * 60):
+				err := s.cache.SaveFile(*s.cfg.CacheFile)
+				if err == nil {
+					//s.log.Printf("cache saved: %s", *s.cfg.CacheFile)
+				} else {
+					s.log.Printf("cache save failed: %s, %s", *s.cfg.CacheFile, err)
+				}
+			}
+		}
+	}()
+	s.dialer, err = proxy.SOCKS5("tcp", *s.cfg.Parent,
+		nil,
+		&net.Dialer{
+			Timeout:   5 * time.Second,
+			KeepAlive: 2 * time.Second,
+		},
+	)
+	if err != nil {
+		return
+	}
+
+	sdkArgs := fmt.Sprintf("sps -S %s -T %s -P %s -C %s -K %s -i %d -p 127.0.0.1:%s --disable-http",
+		*s.cfg.ParentServiceType,
+		*s.cfg.ParentType,
+		*s.cfg.Parent,
+		*s.cfg.CertFile,
+		*s.cfg.KeyFile,
+		*s.cfg.Timeout,
+		*s.cfg.LocalSocks5Port,
+	)
+	if *s.cfg.ParentKey != "" {
+		sdkArgs += " -Z " + *s.cfg.ParentKey
+	}
+	if *s.cfg.ParentAuth != "" {
+		sdkArgs += " -A " + *s.cfg.ParentAuth
+	}
+	if *s.cfg.CaCertFile != "" {
+		sdkArgs += " --ca " + *s.cfg.CaCertFile
+	}
+	if *s.cfg.ParentCompress {
+		sdkArgs += " -M"
+	}
+	s.log.Printf("start sps with : %s", sdkArgs)
+	errStr := Start(s.serviceKey, sdkArgs)
+	if errStr != "" {
+		err = fmt.Errorf("start sps service fail,%s", errStr)
+	}
+	return
+}
+func (s *DNS) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop dns service crashed,%s", e)
+		} else {
+			s.log.Printf("service dns stoped")
+		}
+	}()
+	Stop(s.serviceKey)
+	s.cache.Flush()
+	s.exitSig <- true
+}
+func (s *DNS) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(DNSArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	dns.HandleFunc(".", s.callback)
+	go func() {
+		log.Printf("dns server on udp %s", *s.cfg.Local)
+		err := dns.ListenAndServe(*s.cfg.Local, "udp", nil)
+		if err != nil {
+			log.Printf("dns listen error: %s", err)
+		}
+	}()
+	return
+}
+
+func (s *DNS) Clean() {
+	s.StopService()
+}
+func (s *DNS) callback(w dns.ResponseWriter, req *dns.Msg) {
+	defer func() {
+		if err := recover(); err != nil {
+			s.log.Printf("dns handler crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+		}
+	}()
+	var (
+		key       string
+		m         *dns.Msg
+		err       error
+		data      []byte
+		id        uint16
+		query     []string
+		questions []dns.Question
+	)
+	if req.MsgHdr.Response == true {
+		return
+	}
+	query = make([]string, len(req.Question))
+	for i, q := range req.Question {
+		if q.Qtype != dns.TypeAAAA {
+			questions = append(questions, q)
+		}
+		query[i] = fmt.Sprintf("(%s %s %s)", q.Name, dns.ClassToString[q.Qclass], dns.TypeToString[q.Qtype])
+	}
+
+	if len(questions) == 0 {
+		return
+	}
+
+	req.Question = questions
+	id = req.Id
+	req.Id = 0
+	key = s.toMd5(req.String())
+	req.Id = id
+	if reply, ok := s.cache.Get(key); ok {
+		data, _ = reply.([]byte)
+	}
+	if data != nil && len(data) > 0 {
+		m = &dns.Msg{}
+		m.Unpack(data)
+		m.Id = id
+		err = w.WriteMsg(m)
+		s.log.Printf("id: %5d cache: HIT %v", id, query)
+		return
+
+	} else {
+		s.log.Printf("id: %5d cache: MISS %v", id, query)
+	}
+
+	s.log.Printf("id: %5d resolve: %v %s", id, query, *s.cfg.RemoteDNSAddress)
+
+	rawConn, err := s.dialer.Dial("tcp", *s.cfg.RemoteDNSAddress)
+	if err != nil {
+		s.log.Printf("dail to %s fail,%s", *s.cfg.RemoteDNSAddress, err)
+		return
+	}
+	defer rawConn.Close()
+	co := new(dns.Conn)
+	co.Conn = rawConn
+	defer co.Close()
+	if err = co.WriteMsg(req); err != nil {
+		s.log.Printf("write dns query fail,%s", err)
+		return
+	}
+	m, err = co.ReadMsg()
+	if err == nil && m.Id != req.Id {
+		s.log.Printf("id: %5d mismath", id)
+		return
+	}
+	if err != nil || len(m.Answer) == 0 {
+		s.log.Printf("dns query fail,%s", err)
+		return
+	}
+	data, err = m.Pack()
+	if err != nil {
+		s.log.Printf("dns query fail,%s", err)
+		return
+	}
+
+	_, err = w.Write(data)
+	if err != nil {
+		s.log.Printf("dns query fail,%s", err)
+		return
+	}
+	m.Id = 0
+	data, _ = m.Pack()
+	ttl := 0
+	if len(m.Answer) > 0 {
+		if *s.cfg.DNSTTL > 0 {
+			ttl = *s.cfg.DNSTTL
+		} else {
+			ttl = int(m.Answer[0].Header().Ttl)
+			if ttl < 0 {
+				ttl = *s.cfg.DNSTTL
+			}
+		}
+	}
+	s.cache.Set(key, data, time.Second*time.Duration(ttl))
+	m.Id = id
+	s.log.Printf("id: %5d cache: CACHED %v TTL %v", id, query, ttl)
+}
+func (s *DNS) toMd5(data string) string {
+	m := md5.New()
+	m.Write([]byte(data))
+	return hex.EncodeToString(m.Sum(nil))
+}

sdk/android-ios/release_android.sh

@@ -0,0 +1,24 @@
+#/bin/bash
+VER="v5.0"
+rm -rf sdk-android-*.tar.gz
+rm -rf android
+mkdir android
+
+#android ; jdk,android ndk & android sdk required, install gomobile go1.10 required
+#export GOPATH="$HOME/go"
+#export GOROOT="/usr/local/go"
+#export PATH="$GOROOT/bin:$GOPATH/bin:$PATH"
+#export ANDROID_HOME="$HOME/Android/Sdk"
+#export NDK_ROOT="$HOME/Android/Sdk/ndk-bundle"
+#export PATH="$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools:$NDK_ROOT:$PATH"
+#go get -v golang.org/x/mobile/cmd/gomobile
+#gomobile init
+
+gomobile bind -v -target=android -javapkg=snail007 -ldflags="-s -w"
+mv proxy.aar android/snail007.goproxy.sdk.aar
+mv proxy-sources.jar android/snail007.goproxy.sdk-sources.jar
+cp ../README.md android
+tar zcfv sdk-android-${VER}.tar.gz android
+rm -rf android
+
+echo "done."

sdk/android-ios/release_ios.sh

@@ -0,0 +1,14 @@
+#/bin/bash
+VER="v5.0"
+rm -rf sdk-ios-*.tar.gz
+rm -rf ios
+mkdir ios
+
+#ios  XCode required
+gomobile bind -v -target=ios -ldflags="-s -w"
+mv Proxy.framework ios
+cp ../README.md ios
+tar zcfv sdk-ios-${VER}.tar.gz ios
+rm -rf ios
+
+echo "done."

sdk/android-ios/sdk.go

@@ -0,0 +1,388 @@
+package proxy
+
+import (
+	"crypto/sha1"
+	"fmt"
+	logger "log"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+
+	"github.com/snail007/goproxy/services"
+	httpx "github.com/snail007/goproxy/services/http"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	mux "github.com/snail007/goproxy/services/mux"
+	socksx "github.com/snail007/goproxy/services/socks"
+	spsx "github.com/snail007/goproxy/services/sps"
+	tcpx "github.com/snail007/goproxy/services/tcp"
+	tunnel "github.com/snail007/goproxy/services/tunnel"
+	udpx "github.com/snail007/goproxy/services/udp"
+	kcp "github.com/xtaci/kcp-go"
+	"golang.org/x/crypto/pbkdf2"
+	kingpin "gopkg.in/alecthomas/kingpin.v2"
+)
+
+const SDK_VERSION = "5.0"
+
+var (
+	app *kingpin.Application
+)
+
+//Start
+//serviceID : is service identify id,different service's id should be difference
+//serviceArgsStr: is the whole command line args string
+//such as :
+//1."http -t tcp -p :8989"
+//2."socks -t tcp -p :8989"
+//and so on.
+//if an error occured , errStr will be the error reason
+//if start success, errStr is empty.
+func Start(serviceID, serviceArgsStr string) (errStr string) {
+	//define  args
+	tcpArgs := tcpx.TCPArgs{}
+	httpArgs := httpx.HTTPArgs{}
+	tunnelServerArgs := tunnel.TunnelServerArgs{}
+	tunnelClientArgs := tunnel.TunnelClientArgs{}
+	tunnelBridgeArgs := tunnel.TunnelBridgeArgs{}
+	muxServerArgs := mux.MuxServerArgs{}
+	muxClientArgs := mux.MuxClientArgs{}
+	muxBridgeArgs := mux.MuxBridgeArgs{}
+	udpArgs := udpx.UDPArgs{}
+	socksArgs := socksx.SocksArgs{}
+	spsArgs := spsx.SPSArgs{}
+	dnsArgs := DNSArgs{}
+	kcpArgs := kcpcfg.KCPConfigArgs{}
+	//build srvice args
+	app = kingpin.New("proxy", "happy with proxy")
+	app.Author("snail").Version(SDK_VERSION)
+	debug := app.Flag("debug", "debug log output").Default("false").Bool()
+	logfile := app.Flag("log", "log file path").Default("").String()
+	kcpArgs.Key = app.Flag("kcp-key", "pre-shared secret between client and server").Default("secrect").String()
+	kcpArgs.Crypt = app.Flag("kcp-method", "encrypt/decrypt method, can be: aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, sm4, none").Default("aes").Enum("aes", "aes-128", "aes-192", "salsa20", "blowfish", "twofish", "cast5", "3des", "tea", "xtea", "xor", "sm4", "none")
+	kcpArgs.Mode = app.Flag("kcp-mode", "profiles: fast3, fast2, fast, normal, manual").Default("fast3").Enum("fast3", "fast2", "fast", "normal", "manual")
+	kcpArgs.MTU = app.Flag("kcp-mtu", "set maximum transmission unit for UDP packets").Default("1350").Int()
+	kcpArgs.SndWnd = app.Flag("kcp-sndwnd", "set send window size(num of packets)").Default("1024").Int()
+	kcpArgs.RcvWnd = app.Flag("kcp-rcvwnd", "set receive window size(num of packets)").Default("1024").Int()
+	kcpArgs.DataShard = app.Flag("kcp-ds", "set reed-solomon erasure coding - datashard").Default("10").Int()
+	kcpArgs.ParityShard = app.Flag("kcp-ps", "set reed-solomon erasure coding - parityshard").Default("3").Int()
+	kcpArgs.DSCP = app.Flag("kcp-dscp", "set DSCP(6bit)").Default("0").Int()
+	kcpArgs.NoComp = app.Flag("kcp-nocomp", "disable compression").Default("false").Bool()
+	kcpArgs.AckNodelay = app.Flag("kcp-acknodelay", "be carefull! flush ack immediately when a packet is received").Default("true").Bool()
+	kcpArgs.NoDelay = app.Flag("kcp-nodelay", "be carefull!").Default("0").Int()
+	kcpArgs.Interval = app.Flag("kcp-interval", "be carefull!").Default("50").Int()
+	kcpArgs.Resend = app.Flag("kcp-resend", "be carefull!").Default("0").Int()
+	kcpArgs.NoCongestion = app.Flag("kcp-nc", "be carefull! no congestion").Default("0").Int()
+	kcpArgs.SockBuf = app.Flag("kcp-sockbuf", "be carefull!").Default("4194304").Int()
+	kcpArgs.KeepAlive = app.Flag("kcp-keepalive", "be carefull!").Default("10").Int()
+
+	//########http#########
+	http := app.Command("http", "proxy on http mode")
+	httpArgs.Parent = http.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	httpArgs.CaCertFile = http.Flag("ca", "ca cert file for tls").Default("").String()
+	httpArgs.CertFile = http.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	httpArgs.KeyFile = http.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	httpArgs.LocalType = http.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	httpArgs.ParentType = http.Flag("parent-type", "parent protocol type <tls|tcp|ssh|kcp>").Short('T').Enum("tls", "tcp", "ssh", "kcp")
+	httpArgs.Always = http.Flag("always", "always use parent proxy").Default("false").Bool()
+	httpArgs.Timeout = http.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Default("2000").Int()
+	httpArgs.HTTPTimeout = http.Flag("http-timeout", "check domain if blocked , http request timeout milliseconds when connect to host").Default("3000").Int()
+	httpArgs.Interval = http.Flag("interval", "check domain if blocked every interval seconds").Default("10").Int()
+	httpArgs.Blocked = http.Flag("blocked", "blocked domain file , one domain each line").Default("blocked").Short('b').String()
+	httpArgs.Direct = http.Flag("direct", "direct domain file , one domain each line").Default("direct").Short('d').String()
+	httpArgs.AuthFile = http.Flag("auth-file", "http basic auth file,\"username:password\" each line in file").Short('F').String()
+	httpArgs.Auth = http.Flag("auth", "http basic auth username and password, mutiple user repeat -a ,such as: -a user1:pass1 -a user2:pass2").Short('a').Strings()
+	httpArgs.CheckParentInterval = http.Flag("check-parent-interval", "check if proxy is okay every interval seconds,zero: means no check").Short('I').Default("3").Int()
+	httpArgs.Local = http.Flag("local", "local ip:port to listen,multiple address use comma split,such as: 0.0.0.0:80,0.0.0.0:443").Short('p').Default(":33080").String()
+	httpArgs.SSHUser = http.Flag("ssh-user", "user for ssh").Short('u').Default("").String()
+	httpArgs.SSHKeyFile = http.Flag("ssh-key", "private key file for ssh").Short('S').Default("").String()
+	httpArgs.SSHKeyFileSalt = http.Flag("ssh-keysalt", "salt of ssh private key").Short('s').Default("").String()
+	httpArgs.SSHPassword = http.Flag("ssh-password", "password for ssh").Short('A').Default("").String()
+	httpArgs.LocalIPS = http.Flag("local-bind-ips", "if your host behind a nat,set your public ip here avoid dead loop").Short('g').Strings()
+	httpArgs.AuthURL = http.Flag("auth-url", "http basic auth username and password will send to this url,response http code equal to 'auth-code' means ok,others means fail.").Default("").String()
+	httpArgs.AuthURLTimeout = http.Flag("auth-timeout", "access 'auth-url' timeout milliseconds").Default("3000").Int()
+	httpArgs.AuthURLOkCode = http.Flag("auth-code", "access 'auth-url' success http code").Default("204").Int()
+	httpArgs.AuthURLRetry = http.Flag("auth-retry", "access 'auth-url' fail and retry count").Default("1").Int()
+	httpArgs.DNSAddress = http.Flag("dns-address", "if set this, proxy will use this dns for resolve doamin").Short('q').Default("").String()
+	httpArgs.DNSTTL = http.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	httpArgs.LocalKey = http.Flag("local-key", "the password for auto encrypt/decrypt local connection data").Short('z').Default("").String()
+	httpArgs.ParentKey = http.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	httpArgs.LocalCompress = http.Flag("local-compress", "auto compress/decompress data on local connection").Short('m').Default("false").Bool()
+	httpArgs.ParentCompress = http.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+
+	//########tcp#########
+	tcp := app.Command("tcp", "proxy on tcp mode")
+	tcpArgs.Parent = tcp.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	tcpArgs.CertFile = tcp.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tcpArgs.KeyFile = tcp.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tcpArgs.Timeout = tcp.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Short('e').Default("2000").Int()
+	tcpArgs.ParentType = tcp.Flag("parent-type", "parent protocol type <tls|tcp|kcp|udp>").Short('T').Enum("tls", "tcp", "udp", "kcp")
+	tcpArgs.LocalType = tcp.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	tcpArgs.CheckParentInterval = tcp.Flag("check-parent-interval", "check if proxy is okay every interval seconds,zero: means no check").Short('I').Default("3").Int()
+	tcpArgs.Local = tcp.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+
+	//########udp#########
+	udp := app.Command("udp", "proxy on udp mode")
+	udpArgs.Parent = udp.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	udpArgs.CertFile = udp.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	udpArgs.KeyFile = udp.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	udpArgs.Timeout = udp.Flag("timeout", "tcp timeout milliseconds when connect to parent proxy").Short('t').Default("2000").Int()
+	udpArgs.ParentType = udp.Flag("parent-type", "parent protocol type <tls|tcp|udp>").Short('T').Enum("tls", "tcp", "udp")
+	udpArgs.CheckParentInterval = udp.Flag("check-parent-interval", "check if proxy is okay every interval seconds,zero: means no check").Short('I').Default("3").Int()
+	udpArgs.Local = udp.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+
+	//########mux-server#########
+	muxServer := app.Command("server", "proxy on mux server mode")
+	muxServerArgs.Parent = muxServer.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	muxServerArgs.ParentType = muxServer.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Default("tls").Short('T').Enum("tls", "tcp", "kcp")
+	muxServerArgs.CertFile = muxServer.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	muxServerArgs.KeyFile = muxServer.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	muxServerArgs.Timeout = muxServer.Flag("timeout", "tcp timeout with milliseconds").Short('i').Default("2000").Int()
+	muxServerArgs.IsUDP = muxServer.Flag("udp", "proxy on udp mux server mode").Default("false").Bool()
+	muxServerArgs.Key = muxServer.Flag("k", "client key").Default("default").String()
+	muxServerArgs.Route = muxServer.Flag("route", "local route to client's network, such as: PROTOCOL://LOCAL_IP:LOCAL_PORT@[CLIENT_KEY]CLIENT_LOCAL_HOST:CLIENT_LOCAL_PORT").Short('r').Default("").Strings()
+	muxServerArgs.IsCompress = muxServer.Flag("c", "compress data when tcp|tls mode").Default("false").Bool()
+	muxServerArgs.SessionCount = muxServer.Flag("session-count", "session count which connect to bridge").Short('n').Default("10").Int()
+
+	//########mux-client#########
+	muxClient := app.Command("client", "proxy on mux client mode")
+	muxClientArgs.Parent = muxClient.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	muxClientArgs.ParentType = muxClient.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Default("tls").Short('T').Enum("tls", "tcp", "kcp")
+	muxClientArgs.CertFile = muxClient.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	muxClientArgs.KeyFile = muxClient.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	muxClientArgs.Timeout = muxClient.Flag("timeout", "tcp timeout with milliseconds").Short('i').Default("2000").Int()
+	muxClientArgs.Key = muxClient.Flag("k", "key same with server").Default("default").String()
+	muxClientArgs.IsCompress = muxClient.Flag("c", "compress data when tcp|tls mode").Default("false").Bool()
+	muxClientArgs.SessionCount = muxClient.Flag("session-count", "session count which connect to bridge").Short('n').Default("10").Int()
+
+	//########mux-bridge#########
+	muxBridge := app.Command("bridge", "proxy on mux bridge mode")
+	muxBridgeArgs.CertFile = muxBridge.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	muxBridgeArgs.KeyFile = muxBridge.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	muxBridgeArgs.Timeout = muxBridge.Flag("timeout", "tcp timeout with milliseconds").Short('i').Default("2000").Int()
+	muxBridgeArgs.Local = muxBridge.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+	muxBridgeArgs.LocalType = muxBridge.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tls").Short('t').Enum("tls", "tcp", "kcp")
+
+	//########tunnel-server#########
+	tunnelServer := app.Command("tserver", "proxy on tunnel server mode")
+	tunnelServerArgs.Parent = tunnelServer.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	tunnelServerArgs.CertFile = tunnelServer.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tunnelServerArgs.KeyFile = tunnelServer.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tunnelServerArgs.Timeout = tunnelServer.Flag("timeout", "tcp timeout with milliseconds").Short('t').Default("2000").Int()
+	tunnelServerArgs.IsUDP = tunnelServer.Flag("udp", "proxy on udp tunnel server mode").Default("false").Bool()
+	tunnelServerArgs.Key = tunnelServer.Flag("k", "client key").Default("default").String()
+	tunnelServerArgs.Route = tunnelServer.Flag("route", "local route to client's network, such as: PROTOCOL://LOCAL_IP:LOCAL_PORT@[CLIENT_KEY]CLIENT_LOCAL_HOST:CLIENT_LOCAL_PORT").Short('r').Default("").Strings()
+
+	//########tunnel-client#########
+	tunnelClient := app.Command("tclient", "proxy on tunnel client mode")
+	tunnelClientArgs.Parent = tunnelClient.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	tunnelClientArgs.CertFile = tunnelClient.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tunnelClientArgs.KeyFile = tunnelClient.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tunnelClientArgs.Timeout = tunnelClient.Flag("timeout", "tcp timeout with milliseconds").Short('t').Default("2000").Int()
+	tunnelClientArgs.Key = tunnelClient.Flag("k", "key same with server").Default("default").String()
+
+	//########tunnel-bridge#########
+	tunnelBridge := app.Command("tbridge", "proxy on tunnel bridge mode")
+	tunnelBridgeArgs.CertFile = tunnelBridge.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	tunnelBridgeArgs.KeyFile = tunnelBridge.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	tunnelBridgeArgs.Timeout = tunnelBridge.Flag("timeout", "tcp timeout with milliseconds").Short('t').Default("2000").Int()
+	tunnelBridgeArgs.Local = tunnelBridge.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+
+	//########ssh#########
+	socks := app.Command("socks", "proxy on ssh mode")
+	socksArgs.Parent = socks.Flag("parent", "parent ssh address, such as: \"23.32.32.19:22\"").Default("").Short('P').String()
+	socksArgs.ParentType = socks.Flag("parent-type", "parent protocol type <tls|tcp|kcp|ssh>").Default("tcp").Short('T').Enum("tls", "tcp", "kcp", "ssh")
+	socksArgs.LocalType = socks.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	socksArgs.Local = socks.Flag("local", "local ip:port to listen").Short('p').Default(":33080").String()
+	socksArgs.CertFile = socks.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	socksArgs.CaCertFile = socks.Flag("ca", "ca cert file for tls").Default("").String()
+	socksArgs.KeyFile = socks.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	socksArgs.SSHUser = socks.Flag("ssh-user", "user for ssh").Short('u').Default("").String()
+	socksArgs.SSHKeyFile = socks.Flag("ssh-key", "private key file for ssh").Short('S').Default("").String()
+	socksArgs.SSHKeyFileSalt = socks.Flag("ssh-keysalt", "salt of ssh private key").Short('s').Default("").String()
+	socksArgs.SSHPassword = socks.Flag("ssh-password", "password for ssh").Short('A').Default("").String()
+	socksArgs.Always = socks.Flag("always", "always use parent proxy").Default("false").Bool()
+	socksArgs.Timeout = socks.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Default("5000").Int()
+	socksArgs.Interval = socks.Flag("interval", "check domain if blocked every interval seconds").Default("10").Int()
+	socksArgs.Blocked = socks.Flag("blocked", "blocked domain file , one domain each line").Default("blocked").Short('b').String()
+	socksArgs.Direct = socks.Flag("direct", "direct domain file , one domain each line").Default("direct").Short('d').String()
+	socksArgs.AuthFile = socks.Flag("auth-file", "http basic auth file,\"username:password\" each line in file").Short('F').String()
+	socksArgs.Auth = socks.Flag("auth", "socks auth username and password, mutiple user repeat -a ,such as: -a user1:pass1 -a user2:pass2").Short('a').Strings()
+	socksArgs.LocalIPS = socks.Flag("local-bind-ips", "if your host behind a nat,set your public ip here avoid dead loop").Short('g').Strings()
+	socksArgs.AuthURL = socks.Flag("auth-url", "auth username and password will send to this url,response http code equal to 'auth-code' means ok,others means fail.").Default("").String()
+	socksArgs.AuthURLTimeout = socks.Flag("auth-timeout", "access 'auth-url' timeout milliseconds").Default("3000").Int()
+	socksArgs.AuthURLOkCode = socks.Flag("auth-code", "access 'auth-url' success http code").Default("204").Int()
+	socksArgs.AuthURLRetry = socks.Flag("auth-retry", "access 'auth-url' fail and retry count").Default("0").Int()
+	socksArgs.DNSAddress = socks.Flag("dns-address", "if set this, proxy will use this dns for resolve doamin").Short('q').Default("").String()
+	socksArgs.DNSTTL = socks.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	socksArgs.LocalKey = socks.Flag("local-key", "the password for auto encrypt/decrypt local connection data").Short('z').Default("").String()
+	socksArgs.ParentKey = socks.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	socksArgs.LocalCompress = socks.Flag("local-compress", "auto compress/decompress data on local connection").Short('m').Default("false").Bool()
+	socksArgs.ParentCompress = socks.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+
+	//########socks+http(s)#########
+	sps := app.Command("sps", "proxy on socks+http(s) mode")
+	spsArgs.Parent = sps.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	spsArgs.CertFile = sps.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	spsArgs.KeyFile = sps.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	spsArgs.CaCertFile = sps.Flag("ca", "ca cert file for tls").Default("").String()
+	spsArgs.Timeout = sps.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Short('i').Default("2000").Int()
+	spsArgs.ParentType = sps.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Short('T').Enum("tls", "tcp", "kcp")
+	spsArgs.LocalType = sps.Flag("local-type", "local protocol type <tls|tcp|kcp>").Default("tcp").Short('t').Enum("tls", "tcp", "kcp")
+	spsArgs.Local = sps.Flag("local", "local ip:port to listen,multiple address use comma split,such as: 0.0.0.0:80,0.0.0.0:443").Short('p').Default(":33080").String()
+	spsArgs.ParentServiceType = sps.Flag("parent-service-type", "parent service type <http|socks>").Short('S').Enum("http", "socks")
+	spsArgs.DNSAddress = sps.Flag("dns-address", "if set this, proxy will use this dns for resolve doamin").Short('q').Default("").String()
+	spsArgs.DNSTTL = sps.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	spsArgs.AuthFile = sps.Flag("auth-file", "http basic auth file,\"username:password\" each line in file").Short('F').String()
+	spsArgs.Auth = sps.Flag("auth", "socks auth username and password, mutiple user repeat -a ,such as: -a user1:pass1 -a user2:pass2").Short('a').Strings()
+	spsArgs.LocalIPS = sps.Flag("local bind ips", "if your host behind a nat,set your public ip here avoid dead loop").Short('g').Strings()
+	spsArgs.AuthURL = sps.Flag("auth-url", "auth username and password will send to this url,response http code equal to 'auth-code' means ok,others means fail.").Default("").String()
+	spsArgs.AuthURLTimeout = sps.Flag("auth-timeout", "access 'auth-url' timeout milliseconds").Default("3000").Int()
+	spsArgs.AuthURLOkCode = sps.Flag("auth-code", "access 'auth-url' success http code").Default("204").Int()
+	spsArgs.AuthURLRetry = sps.Flag("auth-retry", "access 'auth-url' fail and retry count").Default("0").Int()
+	spsArgs.ParentAuth = sps.Flag("parent-auth", "parent socks auth username and password, such as: -A user1:pass1").Short('A').String()
+	spsArgs.LocalKey = sps.Flag("local-key", "the password for auto encrypt/decrypt local connection data").Short('z').Default("").String()
+	spsArgs.ParentKey = sps.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	spsArgs.LocalCompress = sps.Flag("local-compress", "auto compress/decompress data on local connection").Short('m').Default("false").Bool()
+	spsArgs.ParentCompress = sps.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+	spsArgs.DisableHTTP = sps.Flag("disable-http", "disable http(s) proxy").Default("false").Bool()
+	spsArgs.DisableSocks5 = sps.Flag("disable-socks", "disable socks proxy").Default("false").Bool()
+	//########dns#########
+	dns := app.Command("dns", "proxy on dns server mode")
+	dnsArgs.Parent = dns.Flag("parent", "parent address, such as: \"23.32.32.19:28008\"").Default("").Short('P').String()
+	dnsArgs.CertFile = dns.Flag("cert", "cert file for tls").Short('C').Default("proxy.crt").String()
+	dnsArgs.KeyFile = dns.Flag("key", "key file for tls").Short('K').Default("proxy.key").String()
+	dnsArgs.CaCertFile = dns.Flag("ca", "ca cert file for tls").Default("").String()
+	dnsArgs.Timeout = dns.Flag("timeout", "tcp timeout milliseconds when connect to real server or parent proxy").Short('i').Default("2000").Int()
+	dnsArgs.ParentType = dns.Flag("parent-type", "parent protocol type <tls|tcp|kcp>").Short('T').Enum("tls", "tcp", "kcp")
+	dnsArgs.Local = dns.Flag("local", "local ip:port to listen,multiple address use comma split,such as: 0.0.0.0:80,0.0.0.0:443").Short('p').Default(":33080").String()
+	dnsArgs.ParentServiceType = dns.Flag("parent-service-type", "parent service type <http|socks>").Short('S').Enum("http", "socks")
+	dnsArgs.RemoteDNSAddress = dns.Flag("dns-address", "remote dns for resolve doamin").Short('q').Default("8.8.8.8:53").String()
+	dnsArgs.DNSTTL = dns.Flag("dns-ttl", "caching seconds of dns query result").Short('e').Default("300").Int()
+	dnsArgs.ParentAuth = dns.Flag("parent-auth", "parent socks auth username and password, such as: -A user1:pass1").Short('A').String()
+	dnsArgs.ParentKey = dns.Flag("parent-key", "the password for auto encrypt/decrypt parent connection data").Short('Z').Default("").String()
+	dnsArgs.ParentCompress = dns.Flag("parent-compress", "auto compress/decompress data on parent connection").Short('M').Default("false").Bool()
+	dnsArgs.CacheFile = dns.Flag("cache-file", "dns result cached file").Short('f').Default(filepath.Join(path.Dir(os.Args[0]), "cache.dat")).String()
+	dnsArgs.LocalSocks5Port = dns.Flag("socks-port", "local socks5 port").Short('s').Default("65501").String()
+
+	//parse args
+	_args := strings.Fields(strings.Trim(serviceArgsStr, " "))
+	args := []string{}
+	for _, a := range _args {
+		args = append(args, strings.Trim(a, "\""))
+	}
+	serviceName, err := app.Parse(args)
+	if err != nil {
+		return fmt.Sprintf("parse args fail,err: %s", err)
+	}
+	//set kcp config
+
+	switch *kcpArgs.Mode {
+	case "normal":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 0, 40, 2, 1
+	case "fast":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 0, 30, 2, 1
+	case "fast2":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 1, 20, 2, 1
+	case "fast3":
+		*kcpArgs.NoDelay, *kcpArgs.Interval, *kcpArgs.Resend, *kcpArgs.NoCongestion = 1, 10, 2, 1
+	}
+	pass := pbkdf2.Key([]byte(*kcpArgs.Key), []byte("snail007-goproxy"), 4096, 32, sha1.New)
+
+	switch *kcpArgs.Crypt {
+	case "sm4":
+		kcpArgs.Block, _ = kcp.NewSM4BlockCrypt(pass[:16])
+	case "tea":
+		kcpArgs.Block, _ = kcp.NewTEABlockCrypt(pass[:16])
+	case "xor":
+		kcpArgs.Block, _ = kcp.NewSimpleXORBlockCrypt(pass)
+	case "none":
+		kcpArgs.Block, _ = kcp.NewNoneBlockCrypt(pass)
+	case "aes-128":
+		kcpArgs.Block, _ = kcp.NewAESBlockCrypt(pass[:16])
+	case "aes-192":
+		kcpArgs.Block, _ = kcp.NewAESBlockCrypt(pass[:24])
+	case "blowfish":
+		kcpArgs.Block, _ = kcp.NewBlowfishBlockCrypt(pass)
+	case "twofish":
+		kcpArgs.Block, _ = kcp.NewTwofishBlockCrypt(pass)
+	case "cast5":
+		kcpArgs.Block, _ = kcp.NewCast5BlockCrypt(pass[:16])
+	case "3des":
+		kcpArgs.Block, _ = kcp.NewTripleDESBlockCrypt(pass[:24])
+	case "xtea":
+		kcpArgs.Block, _ = kcp.NewXTEABlockCrypt(pass[:16])
+	case "salsa20":
+		kcpArgs.Block, _ = kcp.NewSalsa20BlockCrypt(pass)
+	default:
+		*kcpArgs.Crypt = "aes"
+		kcpArgs.Block, _ = kcp.NewAESBlockCrypt(pass)
+	}
+	//attach kcp config
+	tcpArgs.KCP = kcpArgs
+	httpArgs.KCP = kcpArgs
+	socksArgs.KCP = kcpArgs
+	spsArgs.KCP = kcpArgs
+	muxBridgeArgs.KCP = kcpArgs
+	muxServerArgs.KCP = kcpArgs
+	muxClientArgs.KCP = kcpArgs
+	dnsArgs.KCP = kcpArgs
+
+	log := logger.New(os.Stderr, "", logger.Ldate|logger.Ltime)
+	flags := logger.Ldate
+	if *debug {
+		flags |= logger.Lshortfile | logger.Lmicroseconds
+	} else {
+		flags |= logger.Ltime
+	}
+	log.SetFlags(flags)
+
+	if *logfile != "" {
+		f, e := os.OpenFile(*logfile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0600)
+		if e != nil {
+			log.Fatal(e)
+		}
+		log.SetOutput(f)
+	}
+
+	//regist services and run service
+	switch serviceName {
+	case "http":
+		services.Regist(serviceID, httpx.NewHTTP(), httpArgs, log)
+	case "tcp":
+		services.Regist(serviceID, tcpx.NewTCP(), tcpArgs, log)
+	case "udp":
+		services.Regist(serviceID, udpx.NewUDP(), udpArgs, log)
+	case "tserver":
+		services.Regist(serviceID, tunnel.NewTunnelServerManager(), tunnelServerArgs, log)
+	case "tclient":
+		services.Regist(serviceID, tunnel.NewTunnelClient(), tunnelClientArgs, log)
+	case "tbridge":
+		services.Regist(serviceID, tunnel.NewTunnelBridge(), tunnelBridgeArgs, log)
+	case "server":
+		services.Regist(serviceID, mux.NewMuxServerManager(), muxServerArgs, log)
+	case "client":
+		services.Regist(serviceID, mux.NewMuxClient(), muxClientArgs, log)
+	case "bridge":
+		services.Regist(serviceID, mux.NewMuxBridge(), muxBridgeArgs, log)
+	case "socks":
+		services.Regist(serviceID, socksx.NewSocks(), socksArgs, log)
+	case "sps":
+		services.Regist(serviceID, spsx.NewSPS(), spsArgs, log)
+	case "dns":
+		services.Regist(serviceName, NewDNS(), dnsArgs, log)
+	}
+	_, err = services.Run(serviceID, nil)
+	if err != nil {
+		return fmt.Sprintf("run service [%s:%s] fail, ERR:%s", serviceID, serviceName, err)
+	}
+	return
+}
+
+func Stop(serviceID string) {
+	services.Stop(serviceID)
+}
+
+func Version() string {
+	return SDK_VERSION
+}

sdk/windows-linux/.gitignore

@@ -0,0 +1,6 @@
+proxy-sdk.dll
+proxy-sdk.h
+proxy-sdk.so
+proxy-sdk.a
+*.tar.gz
+test.c

sdk/windows-linux/release_linux.sh

@@ -0,0 +1,24 @@
+#/bin/bash
+VER="v5.0"
+
+rm -rf sdk-linux-*.tar.gz
+rm -rf README.md libproxy-sdk.so libproxy-sdk.h libproxy-sdk.a
+
+#linux 32bit
+CGO_ENABLED=1 GOARCH=386 GOOS=linux go build -buildmode=c-archive -ldflags "-s -w" -o libproxy-sdk.a sdk.go
+CGO_ENABLED=1 GOARCH=386 GOOS=linux go build -buildmode=c-shared -ldflags "-s -w" -o libproxy-sdk.so sdk.go
+cp ../README.md .
+tar zcf sdk-linux-32bit-${VER}.tar.gz README.md libproxy-sdk.so libproxy-sdk.a libproxy-sdk.h
+rm -rf README.md libproxy-sdk.so libproxy-sdk.h libproxy-sdk.a
+
+#linux 64bit
+CGO_ENABLED=1 GOARCH=amd64 GOOS=linux go build -buildmode=c-archive -ldflags "-s -w" -o libproxy-sdk.a sdk.go
+CGO_ENABLED=1 GOARCH=amd64 GOOS=linux go build -buildmode=c-shared -ldflags "-s -w" -o libproxy-sdk.so sdk.go
+cp ../README.md .
+tar zcf sdk-linux-64bit-${VER}.tar.gz README.md libproxy-sdk.so libproxy-sdk.a libproxy-sdk.h
+rm -rf README.md libproxy-sdk.so libproxy-sdk.h libproxy-sdk.a
+
+echo "done."
+
+
+

sdk/windows-linux/release_mac.sh

@@ -0,0 +1,13 @@
+#/bin/bash
+VER="v5.0"
+
+rm -rf *.tar.gz
+rm -rf README.md libproxy-sdk.dylib libproxy-sdk.h
+
+#mac  , macos required
+CGO_ENABLED=1 GOARCH=amd64 GOOS=darwin go build -buildmode=c-shared -ldflags "-s -w" -o libproxy-sdk.dylib sdk.go
+cp ../README.md .
+tar zcf sdk-mac-${VER}.tar.gz README.md libproxy-sdk.dylib libproxy-sdk.h
+rm -rf README.md libproxy-sdk.dylib libproxy-sdk.h
+
+echo "done."

sdk/windows-linux/release_windows.sh

@@ -0,0 +1,28 @@
+#/bin/bash
+VER="v5.0"
+
+sudo rm /usr/local/go
+sudo ln -s /usr/local/go1.10.1 /usr/local/go
+rm -rf sdk-windows-*.tar.gz
+rm -rf README.md proxy-sdk.h proxy-sdk.dll
+
+
+#apt-get install gcc-multilib 
+#apt-get install gcc-mingw-w64
+
+#windows 64bit
+CC=x86_64-w64-mingw32-gcc GOARCH=amd64 CGO_ENABLED=1 GOOS=windows go build -buildmode=c-shared -ldflags "-s -w" -o proxy-sdk.dll sdk.go
+cp ../README.md .
+tar zcf sdk-windows-64bit-${VER}.tar.gz README.md proxy-sdk.dll proxy-sdk.h ieshims.dll
+rm -rf README.md proxy-sdk.h proxy-sdk.dll
+
+#windows 32bit
+CC=i686-w64-mingw32-gcc-win32 GOARCH=386 CGO_ENABLED=1 GOOS=windows go build -buildmode=c-shared -ldflags "-s -w" -o proxy-sdk.dll sdk.go
+cp ../README.md .
+tar zcf sdk-windows-32bit-${VER}.tar.gz README.md proxy-sdk.dll proxy-sdk.h ieshims.dll
+rm -rf README.md proxy-sdk.h proxy-sdk.dll
+
+sudo rm /usr/local/go
+sudo ln -s /usr/local/go1.8.5 /usr/local/go
+
+echo "done."

sdk/windows-linux/sdk.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"C"
+
+	sdk "github.com/snail007/goproxy/sdk/android-ios"
+)
+
+//export Start
+func Start(serviceID *C.char, serviceArgsStr *C.char) (errStr *C.char) {
+	return C.CString(sdk.Start(C.GoString(serviceID), C.GoString(serviceArgsStr)))
+}
+
+//export Stop
+func Stop(serviceID *C.char) {
+	sdk.Stop(C.GoString(serviceID))
+}
+
+//export Version
+func Version() (ver *C.char) {
+	return C.CString(sdk.Version())
+}
+
+func main() {
+}

services/http/http.go

@@ -0,0 +1,530 @@
+package http
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	logger "log"
+	"net"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+	"github.com/snail007/goproxy/utils/conncrypt"
+
+	"golang.org/x/crypto/ssh"
+)
+
+type HTTPArgs struct {
+	Parent              *string
+	CertFile            *string
+	KeyFile             *string
+	CaCertFile          *string
+	CaCertBytes         []byte
+	CertBytes           []byte
+	KeyBytes            []byte
+	Local               *string
+	Always              *bool
+	HTTPTimeout         *int
+	Interval            *int
+	Blocked             *string
+	Direct              *string
+	AuthFile            *string
+	Auth                *[]string
+	AuthURL             *string
+	AuthURLOkCode       *int
+	AuthURLTimeout      *int
+	AuthURLRetry        *int
+	ParentType          *string
+	LocalType           *string
+	Timeout             *int
+	CheckParentInterval *int
+	SSHKeyFile          *string
+	SSHKeyFileSalt      *string
+	SSHPassword         *string
+	SSHUser             *string
+	SSHKeyBytes         []byte
+	SSHAuthMethod       ssh.AuthMethod
+	KCP                 kcpcfg.KCPConfigArgs
+	LocalIPS            *[]string
+	DNSAddress          *string
+	DNSTTL              *int
+	LocalKey            *string
+	ParentKey           *string
+	LocalCompress       *bool
+	ParentCompress      *bool
+}
+type HTTP struct {
+	outPool        utils.OutConn
+	cfg            HTTPArgs
+	checker        utils.Checker
+	basicAuth      utils.BasicAuth
+	sshClient      *ssh.Client
+	lockChn        chan bool
+	domainResolver utils.DomainResolver
+	isStop         bool
+	serverChannels []*utils.ServerChannel
+	userConns      utils.ConcurrentMap
+	log            *logger.Logger
+}
+
+func NewHTTP() services.Service {
+	return &HTTP{
+		outPool:        utils.OutConn{},
+		cfg:            HTTPArgs{},
+		checker:        utils.Checker{},
+		basicAuth:      utils.BasicAuth{},
+		lockChn:        make(chan bool, 1),
+		isStop:         false,
+		serverChannels: []*utils.ServerChannel{},
+		userConns:      utils.NewConcurrentMap(),
+	}
+}
+func (s *HTTP) CheckArgs() (err error) {
+	if *s.cfg.Parent != "" && *s.cfg.ParentType == "" {
+		err = fmt.Errorf("parent type unkown,use -T <tls|tcp|ssh|kcp>")
+		return
+	}
+	if *s.cfg.ParentType == "tls" || *s.cfg.LocalType == "tls" {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+		if *s.cfg.CaCertFile != "" {
+			s.cfg.CaCertBytes, err = ioutil.ReadFile(*s.cfg.CaCertFile)
+			if err != nil {
+				err = fmt.Errorf("read ca file error,ERR:%s", err)
+				return
+			}
+		}
+	}
+	if *s.cfg.ParentType == "ssh" {
+		if *s.cfg.SSHUser == "" {
+			err = fmt.Errorf("ssh user required")
+			return
+		}
+		if *s.cfg.SSHKeyFile == "" && *s.cfg.SSHPassword == "" {
+			err = fmt.Errorf("ssh password or key required")
+			return
+		}
+
+		if *s.cfg.SSHPassword != "" {
+			s.cfg.SSHAuthMethod = ssh.Password(*s.cfg.SSHPassword)
+		} else {
+			var SSHSigner ssh.Signer
+			s.cfg.SSHKeyBytes, err = ioutil.ReadFile(*s.cfg.SSHKeyFile)
+			if err != nil {
+				err = fmt.Errorf("read key file ERR: %s", err)
+				return
+			}
+			if *s.cfg.SSHKeyFileSalt != "" {
+				SSHSigner, err = ssh.ParsePrivateKeyWithPassphrase(s.cfg.SSHKeyBytes, []byte(*s.cfg.SSHKeyFileSalt))
+			} else {
+				SSHSigner, err = ssh.ParsePrivateKey(s.cfg.SSHKeyBytes)
+			}
+			if err != nil {
+				err = fmt.Errorf("parse ssh private key fail,ERR: %s", err)
+				return
+			}
+			s.cfg.SSHAuthMethod = ssh.PublicKeys(SSHSigner)
+		}
+	}
+	return
+}
+func (s *HTTP) InitService() (err error) {
+	s.InitBasicAuth()
+	if *s.cfg.Parent != "" {
+		s.checker = utils.NewChecker(*s.cfg.HTTPTimeout, int64(*s.cfg.Interval), *s.cfg.Blocked, *s.cfg.Direct, s.log)
+	}
+	if *s.cfg.DNSAddress != "" {
+		(*s).domainResolver = utils.NewDomainResolver(*s.cfg.DNSAddress, *s.cfg.DNSTTL, s.log)
+	}
+	if *s.cfg.ParentType == "ssh" {
+		err = s.ConnectSSH()
+		if err != nil {
+			err = fmt.Errorf("init service fail, ERR: %s", err)
+			return
+		}
+		go func() {
+			//循环检查ssh网络连通性
+			for {
+				if s.isStop {
+					return
+				}
+				conn, err := utils.ConnectHost(s.Resolve(*s.cfg.Parent), *s.cfg.Timeout*2)
+				if err == nil {
+					conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+					_, err = conn.Write([]byte{0})
+					conn.SetDeadline(time.Time{})
+				}
+				if err != nil {
+					if s.sshClient != nil {
+						s.sshClient.Close()
+						if s.sshClient.Conn != nil {
+							s.sshClient.Conn.Close()
+						}
+					}
+					s.log.Printf("ssh offline, retrying...")
+					s.ConnectSSH()
+				} else {
+					conn.Close()
+				}
+				time.Sleep(time.Second * 3)
+			}
+		}()
+	}
+	return
+}
+func (s *HTTP) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop http(s) service crashed,%s", e)
+		} else {
+			s.log.Printf("service http(s) stoped")
+		}
+	}()
+	s.isStop = true
+	s.checker.Stop()
+	if s.sshClient != nil {
+		s.sshClient.Close()
+	}
+	for _, sc := range s.serverChannels {
+		if sc.Listener != nil && *sc.Listener != nil {
+			(*sc.Listener).Close()
+		}
+		if sc.UDPListener != nil {
+			(*sc.UDPListener).Close()
+		}
+	}
+}
+func (s *HTTP) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(HTTPArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+
+	if err = s.InitService(); err != nil {
+		return
+	}
+
+	if *s.cfg.Parent != "" {
+		s.log.Printf("use %s parent %s", *s.cfg.ParentType, *s.cfg.Parent)
+		s.InitOutConnPool()
+	}
+
+	for _, addr := range strings.Split(*s.cfg.Local, ",") {
+		if addr != "" {
+			host, port, _ := net.SplitHostPort(addr)
+			p, _ := strconv.Atoi(port)
+			sc := utils.NewServerChannel(host, p, s.log)
+			if *s.cfg.LocalType == "tcp" {
+				err = sc.ListenTCP(s.callback)
+			} else if *s.cfg.LocalType == "tls" {
+				err = sc.ListenTls(s.cfg.CertBytes, s.cfg.KeyBytes, s.cfg.CaCertBytes, s.callback)
+			} else if *s.cfg.LocalType == "kcp" {
+				err = sc.ListenKCP(s.cfg.KCP, s.callback, s.log)
+			}
+			if err != nil {
+				return
+			}
+			s.log.Printf("%s http(s) proxy on %s", *s.cfg.LocalType, (*sc.Listener).Addr())
+			s.serverChannels = append(s.serverChannels, &sc)
+		}
+	}
+	return
+}
+
+func (s *HTTP) Clean() {
+	s.StopService()
+}
+func (s *HTTP) callback(inConn net.Conn) {
+	defer func() {
+		if err := recover(); err != nil {
+			s.log.Printf("http(s) conn handler crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+		}
+	}()
+	if *s.cfg.LocalCompress {
+		inConn = utils.NewCompConn(inConn)
+	}
+	if *s.cfg.LocalKey != "" {
+		inConn = conncrypt.New(inConn, &conncrypt.Config{
+			Password: *s.cfg.LocalKey,
+		})
+	}
+	var err interface{}
+	var req utils.HTTPRequest
+	req, err = utils.NewHTTPRequest(&inConn, 4096, s.IsBasicAuth(), &s.basicAuth, s.log)
+	if err != nil {
+		if err != io.EOF {
+			s.log.Printf("decoder error , from %s, ERR:%s", inConn.RemoteAddr(), err)
+		}
+		utils.CloseConn(&inConn)
+		return
+	}
+	address := req.Host
+	host, _, _ := net.SplitHostPort(address)
+	useProxy := false
+	if !utils.IsIternalIP(host, *s.cfg.Always) {
+		useProxy = true
+		if *s.cfg.Parent == "" {
+			useProxy = false
+		} else if *s.cfg.Always {
+			useProxy = true
+		} else {
+			var isInMap bool
+			useProxy, isInMap, _, _ = s.checker.IsBlocked(address)
+			if !isInMap {
+				s.checker.Add(address, s.Resolve(address))
+			}
+			//s.log.Printf("blocked ? : %v, %s , fail:%d ,success:%d", useProxy, address, n, m)
+		}
+	}
+
+	s.log.Printf("use proxy : %v, %s", useProxy, address)
+
+	err = s.OutToTCP(useProxy, address, &inConn, &req)
+	if err != nil {
+		if *s.cfg.Parent == "" {
+			s.log.Printf("connect to %s fail, ERR:%s", address, err)
+		} else {
+			s.log.Printf("connect to %s parent %s fail", *s.cfg.ParentType, *s.cfg.Parent)
+		}
+		utils.CloseConn(&inConn)
+	}
+}
+func (s *HTTP) OutToTCP(useProxy bool, address string, inConn *net.Conn, req *utils.HTTPRequest) (err interface{}) {
+	inAddr := (*inConn).RemoteAddr().String()
+	inLocalAddr := (*inConn).LocalAddr().String()
+	//防止死循环
+	if s.IsDeadLoop(inLocalAddr, req.Host) {
+		utils.CloseConn(inConn)
+		err = fmt.Errorf("dead loop detected , %s", req.Host)
+		return
+	}
+	var outConn net.Conn
+	tryCount := 0
+	maxTryCount := 5
+	for {
+		if s.isStop {
+			return
+		}
+		if useProxy {
+			if *s.cfg.ParentType == "ssh" {
+				outConn, err = s.getSSHConn(address)
+			} else {
+				// s.log.Printf("%v", s.outPool)
+				outConn, err = s.outPool.Get()
+			}
+		} else {
+			outConn, err = utils.ConnectHost(s.Resolve(address), *s.cfg.Timeout)
+		}
+		tryCount++
+		if err == nil || tryCount > maxTryCount {
+			break
+		} else {
+			s.log.Printf("connect to %s , err:%s,retrying...", *s.cfg.Parent, err)
+			time.Sleep(time.Second * 2)
+		}
+	}
+	if err != nil {
+		s.log.Printf("connect to %s , err:%s", *s.cfg.Parent, err)
+		utils.CloseConn(inConn)
+		return
+	}
+	if *s.cfg.ParentCompress {
+		outConn = utils.NewCompConn(outConn)
+	}
+	if *s.cfg.ParentKey != "" {
+		outConn = conncrypt.New(outConn, &conncrypt.Config{
+			Password: *s.cfg.ParentKey,
+		})
+	}
+	outAddr := outConn.RemoteAddr().String()
+	//outLocalAddr := outConn.LocalAddr().String()
+	if req.IsHTTPS() && (!useProxy || *s.cfg.ParentType == "ssh") {
+		//https无上级或者上级非代理,proxy需要响应connect请求,并直连目标
+		err = req.HTTPSReply()
+	} else {
+		//https或者http,上级是代理,proxy需要转发
+		outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		//直连目标或上级非代理或非SNI,清理HTTP头部的代理头信息.
+		if (!useProxy || *s.cfg.ParentType == "ssh") && !req.IsSNI {
+			_, err = outConn.Write(utils.RemoveProxyHeaders(req.HeadBuf))
+		} else {
+			_, err = outConn.Write(req.HeadBuf)
+		}
+		outConn.SetDeadline(time.Time{})
+		if err != nil {
+			s.log.Printf("write to %s , err:%s", *s.cfg.Parent, err)
+			utils.CloseConn(inConn)
+			return
+		}
+	}
+
+	utils.IoBind((*inConn), outConn, func(err interface{}) {
+		s.log.Printf("conn %s - %s released [%s]", inAddr, outAddr, req.Host)
+		s.userConns.Remove(inAddr)
+	}, s.log)
+	s.log.Printf("conn %s - %s connected [%s]", inAddr, outAddr, req.Host)
+	if c, ok := s.userConns.Get(inAddr); ok {
+		(*c.(*net.Conn)).Close()
+	}
+	s.userConns.Set(inAddr, inConn)
+	return
+}
+
+func (s *HTTP) getSSHConn(host string) (outConn net.Conn, err interface{}) {
+	maxTryCount := 1
+	tryCount := 0
+RETRY:
+	if tryCount >= maxTryCount || s.isStop {
+		return
+	}
+	wait := make(chan bool, 1)
+	go func() {
+		defer func() {
+			if err == nil {
+				err = recover()
+			}
+			wait <- true
+		}()
+		outConn, err = s.sshClient.Dial("tcp", host)
+	}()
+	select {
+	case <-wait:
+	case <-time.After(time.Second * 5):
+		err = fmt.Errorf("ssh dial %s timeout", host)
+	}
+	if err != nil {
+		s.log.Printf("connect ssh fail, ERR: %s, retrying...", err)
+		e := s.ConnectSSH()
+		if e == nil {
+			tryCount++
+			time.Sleep(time.Second * 3)
+			goto RETRY
+		} else {
+			err = e
+		}
+	}
+	return
+}
+func (s *HTTP) ConnectSSH() (err error) {
+	select {
+	case s.lockChn <- true:
+	default:
+		err = fmt.Errorf("can not connect at same time")
+		return
+	}
+	config := ssh.ClientConfig{
+		Timeout: time.Duration(*s.cfg.Timeout) * time.Millisecond,
+		User:    *s.cfg.SSHUser,
+		Auth:    []ssh.AuthMethod{s.cfg.SSHAuthMethod},
+		HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
+			return nil
+		},
+	}
+	if s.sshClient != nil {
+		s.sshClient.Close()
+	}
+	s.sshClient, err = ssh.Dial("tcp", s.Resolve(*s.cfg.Parent), &config)
+	<-s.lockChn
+	return
+}
+func (s *HTTP) InitOutConnPool() {
+	if *s.cfg.ParentType == "tls" || *s.cfg.ParentType == "tcp" || *s.cfg.ParentType == "kcp" {
+		//dur int, isTLS bool, certBytes, keyBytes []byte,
+		//parent string, timeout int, InitialCap int, MaxCap int
+		s.outPool = utils.NewOutConn(
+			*s.cfg.CheckParentInterval,
+			*s.cfg.ParentType,
+			s.cfg.KCP,
+			s.cfg.CertBytes, s.cfg.KeyBytes, s.cfg.CaCertBytes,
+			s.Resolve(*s.cfg.Parent),
+			*s.cfg.Timeout,
+		)
+	}
+}
+func (s *HTTP) InitBasicAuth() (err error) {
+	if *s.cfg.DNSAddress != "" {
+		s.basicAuth = utils.NewBasicAuth(&(*s).domainResolver, s.log)
+	} else {
+		s.basicAuth = utils.NewBasicAuth(nil, s.log)
+	}
+	if *s.cfg.AuthURL != "" {
+		s.basicAuth.SetAuthURL(*s.cfg.AuthURL, *s.cfg.AuthURLOkCode, *s.cfg.AuthURLTimeout, *s.cfg.AuthURLRetry)
+		s.log.Printf("auth from %s", *s.cfg.AuthURL)
+	}
+	if *s.cfg.AuthFile != "" {
+		var n = 0
+		n, err = s.basicAuth.AddFromFile(*s.cfg.AuthFile)
+		if err != nil {
+			err = fmt.Errorf("auth-file ERR:%s", err)
+			return
+		}
+		s.log.Printf("auth data added from file %d , total:%d", n, s.basicAuth.Total())
+	}
+	if len(*s.cfg.Auth) > 0 {
+		n := s.basicAuth.Add(*s.cfg.Auth)
+		s.log.Printf("auth data added %d, total:%d", n, s.basicAuth.Total())
+	}
+	return
+}
+func (s *HTTP) IsBasicAuth() bool {
+	return *s.cfg.AuthFile != "" || len(*s.cfg.Auth) > 0 || *s.cfg.AuthURL != ""
+}
+func (s *HTTP) IsDeadLoop(inLocalAddr string, host string) bool {
+	inIP, inPort, err := net.SplitHostPort(inLocalAddr)
+	if err != nil {
+		return false
+	}
+	outDomain, outPort, err := net.SplitHostPort(host)
+	if err != nil {
+		return false
+	}
+	if inPort == outPort {
+		var outIPs []net.IP
+		if *s.cfg.DNSAddress != "" {
+			outIPs = []net.IP{net.ParseIP(s.Resolve(outDomain))}
+		} else {
+			outIPs, err = net.LookupIP(outDomain)
+		}
+		if err == nil {
+			for _, ip := range outIPs {
+				if ip.String() == inIP {
+					return true
+				}
+			}
+		}
+		interfaceIPs, err := utils.GetAllInterfaceAddr()
+		for _, ip := range *s.cfg.LocalIPS {
+			interfaceIPs = append(interfaceIPs, net.ParseIP(ip).To4())
+		}
+		if err == nil {
+			for _, localIP := range interfaceIPs {
+				for _, outIP := range outIPs {
+					if localIP.Equal(outIP) {
+						return true
+					}
+				}
+			}
+		}
+	}
+	return false
+}
+func (s *HTTP) Resolve(address string) string {
+	if *s.cfg.DNSAddress == "" {
+		return address
+	}
+	ip, err := s.domainResolver.Resolve(address)
+	if err != nil {
+		s.log.Printf("dns error %s , ERR:%s", address, err)
+		return address
+	}
+	return ip
+}

services/kcpcfg/args.go

@@ -0,0 +1,24 @@
+package kcpcfg
+
+import kcp "github.com/xtaci/kcp-go"
+
+type KCPConfigArgs struct {
+	Key          *string
+	Crypt        *string
+	Mode         *string
+	MTU          *int
+	SndWnd       *int
+	RcvWnd       *int
+	DataShard    *int
+	ParityShard  *int
+	DSCP         *int
+	NoComp       *bool
+	AckNodelay   *bool
+	NoDelay      *int
+	Interval     *int
+	Resend       *int
+	NoCongestion *int
+	SockBuf      *int
+	KeepAlive    *int
+	Block        kcp.BlockCrypt
+}

services/keygen/keygen.go

@@ -0,0 +1,71 @@
+package keygen
+
+import (
+	"fmt"
+	logger "log"
+	"os"
+	"strings"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/utils"
+	"github.com/snail007/goproxy/utils/cert"
+)
+
+type KeygenArgs struct {
+	CaName     *string
+	CertName   *string
+	Sign       *bool
+	SignDays   *int
+	CommonName *string
+}
+
+type Keygen struct {
+	cfg KeygenArgs
+	log *logger.Logger
+}
+
+func NewKeygen() services.Service {
+	return &Keygen{}
+}
+func (s *Keygen) CheckArgs() (err error) {
+	if *s.cfg.Sign && (*s.cfg.CertName == "" || *s.cfg.CaName == "") {
+		err = fmt.Errorf("ca name and cert name required for signin")
+		return
+	}
+	if !*s.cfg.Sign && *s.cfg.CaName == "" {
+		err = fmt.Errorf("ca name required")
+		return
+	}
+	if *s.cfg.CommonName == "" {
+		domainSubfixList := []string{".com", ".edu", ".gov", ".int", ".mil", ".net", ".org", ".biz", ".info", ".pro", ".name", ".museum", ".coop", ".aero", ".xxx", ".idv", ".ac", ".ad", ".ae", ".af", ".ag", ".ai", ".al", ".am", ".an", ".ao", ".aq", ".ar", ".as", ".at", ".au", ".aw", ".az", ".ba", ".bb", ".bd", ".be", ".bf", ".bg", ".bh", ".bi", ".bj", ".bm", ".bn", ".bo", ".br", ".bs", ".bt", ".bv", ".bw", ".by", ".bz", ".ca", ".cc", ".cd", ".cf", ".cg", ".ch", ".ci", ".ck", ".cl", ".cm", ".cn", ".co", ".cr", ".cu", ".cv", ".cx", ".cy", ".cz", ".de", ".dj", ".dk", ".dm", ".do", ".dz", ".ec", ".ee", ".eg", ".eh", ".er", ".es", ".et", ".eu", ".fi", ".fj", ".fk", ".fm", ".fo", ".fr", ".ga", ".gd", ".ge", ".gf", ".gg", ".gh", ".gi", ".gl", ".gm", ".gn", ".gp", ".gq", ".gr", ".gs", ".gt", ".gu", ".gw", ".gy", ".hk", ".hm", ".hn", ".hr", ".ht", ".hu", ".id", ".ie", ".il", ".im", ".in", ".io", ".iq", ".ir", ".is", ".it", ".je", ".jm", ".jo", ".jp", ".ke", ".kg", ".kh", ".ki", ".km", ".kn", ".kp", ".kr", ".kw", ".ky", ".kz", ".la", ".lb", ".lc", ".li", ".lk", ".lr", ".ls", ".lt", ".lu", ".lv", ".ly", ".ma", ".mc", ".md", ".mg", ".mh", ".mk", ".ml", ".mm", ".mn", ".mo", ".mp", ".mq", ".mr", ".ms", ".mt", ".mu", ".mv", ".mw", ".mx", ".my", ".mz", ".na", ".nc", ".ne", ".nf", ".ng", ".ni", ".nl", ".no", ".np", ".nr", ".nu", ".nz", ".om", ".pa", ".pe", ".pf", ".pg", ".ph", ".pk", ".pl", ".pm", ".pn", ".pr", ".ps", ".pt", ".pw", ".py", ".qa", ".re", ".ro", ".ru", ".rw", ".sa", ".sb", ".sc", ".sd", ".se", ".sg", ".sh", ".si", ".sj", ".sk", ".sl", ".sm", ".sn", ".so", ".sr", ".st", ".sv", ".sy", ".sz", ".tc", ".td", ".tf", ".tg", ".th", ".tj", ".tk", ".tl", ".tm", ".tn", ".to", ".tp", ".tr", ".tt", ".tv", ".tw", ".tz", ".ua", ".ug", ".uk", ".um", ".us", ".uy", ".uz", ".va", ".vc", ".ve", ".vg", ".vi", ".vn", ".vu", ".wf", ".ws", ".ye", ".yt", ".yu", ".yr", ".za", ".zm", ".zw"}
+		CN := strings.ToLower(utils.RandString(int(utils.RandInt(4)%10)) + domainSubfixList[int(utils.RandInt(4))%len(domainSubfixList)])
+		*s.cfg.CommonName = CN
+	}
+	return
+}
+func (s *Keygen) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(KeygenArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if *s.cfg.Sign {
+		caCert, caKey, err := cert.ParseCertAndKey(*s.cfg.CaName+".crt", *s.cfg.CaName+".key")
+		if err != nil {
+			return err
+		}
+		err = cert.CreateSignCertToFile(caCert, caKey, *s.cfg.CommonName, *s.cfg.SignDays, *s.cfg.CertName)
+	} else {
+		err = cert.CreateCaToFile(*s.cfg.CaName, *s.cfg.CommonName, *s.cfg.SignDays)
+	}
+	if err != nil {
+		return
+	}
+	s.log.Println("success")
+	os.Exit(0)
+	return
+}
+
+func (s *Keygen) Clean() {
+
+}

services/mux/mux_bridge.go

@@ -0,0 +1,301 @@
+package mux
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	logger "log"
+	"math/rand"
+	"net"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
+)
+
+const (
+	CONN_SERVER = uint8(4)
+	CONN_CLIENT = uint8(5)
+)
+
+type MuxBridgeArgs struct {
+	CertFile   *string
+	KeyFile    *string
+	CertBytes  []byte
+	KeyBytes   []byte
+	Local      *string
+	LocalType  *string
+	Timeout    *int
+	IsCompress *bool
+	KCP        kcpcfg.KCPConfigArgs
+}
+type MuxBridge struct {
+	cfg                MuxBridgeArgs
+	clientControlConns utils.ConcurrentMap
+	serverConns        utils.ConcurrentMap
+	router             utils.ClientKeyRouter
+	l                  *sync.Mutex
+	isStop             bool
+	sc                 *utils.ServerChannel
+	log                *logger.Logger
+}
+
+func NewMuxBridge() services.Service {
+	b := &MuxBridge{
+		cfg:                MuxBridgeArgs{},
+		clientControlConns: utils.NewConcurrentMap(),
+		serverConns:        utils.NewConcurrentMap(),
+		l:                  &sync.Mutex{},
+		isStop:             false,
+	}
+	b.router = utils.NewClientKeyRouter(&b.clientControlConns, 50000)
+	return b
+}
+
+func (s *MuxBridge) InitService() (err error) {
+	return
+}
+func (s *MuxBridge) CheckArgs() (err error) {
+	if *s.cfg.CertFile == "" || *s.cfg.KeyFile == "" {
+		err = fmt.Errorf("cert and key file required")
+		return
+	}
+	if *s.cfg.LocalType == "tls" {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+func (s *MuxBridge) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop bridge service crashed,%s", e)
+		} else {
+			s.log.Printf("service bridge stoped")
+		}
+	}()
+	s.isStop = true
+	if s.sc != nil && (*s.sc).Listener != nil {
+		(*(*s.sc).Listener).Close()
+	}
+	for _, g := range s.clientControlConns.Items() {
+		for _, session := range g.(*utils.ConcurrentMap).Items() {
+			(session.(*smux.Session)).Close()
+		}
+	}
+	for _, c := range s.serverConns.Items() {
+		(*c.(*net.Conn)).Close()
+	}
+}
+func (s *MuxBridge) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(MuxBridgeArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+
+	host, port, _ := net.SplitHostPort(*s.cfg.Local)
+	p, _ := strconv.Atoi(port)
+	sc := utils.NewServerChannel(host, p, s.log)
+	if *s.cfg.LocalType == "tcp" {
+		err = sc.ListenTCP(s.handler)
+	} else if *s.cfg.LocalType == "tls" {
+		err = sc.ListenTls(s.cfg.CertBytes, s.cfg.KeyBytes, nil, s.handler)
+	} else if *s.cfg.LocalType == "kcp" {
+		err = sc.ListenKCP(s.cfg.KCP, s.handler, s.log)
+	}
+	if err != nil {
+		return
+	}
+	s.sc = &sc
+	s.log.Printf("%s bridge on %s", *s.cfg.LocalType, (*sc.Listener).Addr())
+	return
+}
+func (s *MuxBridge) Clean() {
+	s.StopService()
+}
+func (s *MuxBridge) handler(inConn net.Conn) {
+	reader := bufio.NewReader(inConn)
+
+	var err error
+	var connType uint8
+	var key string
+	inConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+	err = utils.ReadPacket(reader, &connType, &key)
+	inConn.SetDeadline(time.Time{})
+	if err != nil {
+		s.log.Printf("read error,ERR:%s", err)
+		return
+	}
+	switch connType {
+	case CONN_SERVER:
+		var serverID string
+		inAddr := inConn.RemoteAddr().String()
+		inConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		err = utils.ReadPacketData(reader, &serverID)
+		inConn.SetDeadline(time.Time{})
+		if err != nil {
+			s.log.Printf("read error,ERR:%s", err)
+			return
+		}
+		s.log.Printf("server connection %s %s connected", serverID, key)
+		if c, ok := s.serverConns.Get(inAddr); ok {
+			(*c.(*net.Conn)).Close()
+		}
+		s.serverConns.Set(inAddr, &inConn)
+		session, err := smux.Server(inConn, nil)
+		if err != nil {
+			utils.CloseConn(&inConn)
+			s.log.Printf("server session error,ERR:%s", err)
+			return
+		}
+		for {
+			if s.isStop {
+				return
+			}
+			stream, err := session.AcceptStream()
+			if err != nil {
+				session.Close()
+				utils.CloseConn(&inConn)
+				s.serverConns.Remove(inAddr)
+				s.log.Printf("server connection %s %s released", serverID, key)
+				return
+			}
+			go func() {
+				defer func() {
+					if e := recover(); e != nil {
+						s.log.Printf("bridge callback crashed,err: %s", e)
+					}
+				}()
+				s.callback(stream, serverID, key)
+			}()
+		}
+	case CONN_CLIENT:
+		s.log.Printf("client connection %s connected", key)
+		session, err := smux.Client(inConn, nil)
+		if err != nil {
+			utils.CloseConn(&inConn)
+			s.log.Printf("client session error,ERR:%s", err)
+			return
+		}
+		keyInfo := strings.Split(key, "-")
+		if len(keyInfo) != 2 {
+			utils.CloseConn(&inConn)
+			s.log.Printf("client key format error,key:%s", key)
+			return
+		}
+		groupKey := keyInfo[0]
+		index := keyInfo[1]
+		s.l.Lock()
+		defer s.l.Unlock()
+		if !s.clientControlConns.Has(groupKey) {
+			item := utils.NewConcurrentMap()
+			s.clientControlConns.Set(groupKey, &item)
+		}
+		_group, _ := s.clientControlConns.Get(groupKey)
+		group := _group.(*utils.ConcurrentMap)
+		if v, ok := group.Get(index); ok {
+			v.(*smux.Session).Close()
+		}
+		group.Set(index, session)
+		// s.clientControlConns.Set(key, session)
+		go func() {
+			for {
+				if s.isStop {
+					return
+				}
+				if session.IsClosed() {
+					s.l.Lock()
+					defer s.l.Unlock()
+					if sess, ok := group.Get(index); ok && sess.(*smux.Session).IsClosed() {
+						group.Remove(index)
+						s.log.Printf("client connection %s released", key)
+					}
+					if group.IsEmpty() {
+						s.clientControlConns.Remove(groupKey)
+					}
+					break
+				}
+				time.Sleep(time.Second * 5)
+			}
+		}()
+		//s.log.Printf("set client session,key: %s", key)
+	}
+
+}
+func (s *MuxBridge) callback(inConn net.Conn, serverID, key string) {
+	try := 20
+	for {
+		if s.isStop {
+			return
+		}
+		try--
+		if try == 0 {
+			break
+		}
+		if key == "*" {
+			key = s.router.GetKey()
+		}
+		_group, ok := s.clientControlConns.Get(key)
+		if !ok {
+			s.log.Printf("client %s session not exists for server stream %s, retrying...", key, serverID)
+			time.Sleep(time.Second * 3)
+			continue
+		}
+		group := _group.(*utils.ConcurrentMap)
+		keys := group.Keys()
+		keysLen := len(keys)
+		i := 0
+		if keysLen > 0 {
+			i = rand.Intn(keysLen)
+		} else {
+			s.log.Printf("client %s session empty for server stream %s, retrying...", key, serverID)
+			time.Sleep(time.Second * 3)
+			continue
+		}
+		index := keys[i]
+		s.log.Printf("select client : %s-%s", key, index)
+		session, _ := group.Get(index)
+		//session.(*smux.Session).SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		stream, err := session.(*smux.Session).OpenStream()
+		//session.(*smux.Session).SetDeadline(time.Time{})
+		if err != nil {
+			s.log.Printf("%s client session open stream %s fail, err: %s, retrying...", key, serverID, err)
+			time.Sleep(time.Second * 3)
+			continue
+		} else {
+			s.log.Printf("stream %s -> %s created", serverID, key)
+			die1 := make(chan bool, 1)
+			die2 := make(chan bool, 1)
+			go func() {
+				io.Copy(stream, inConn)
+				die1 <- true
+			}()
+			go func() {
+				io.Copy(inConn, stream)
+				die2 <- true
+			}()
+			select {
+			case <-die1:
+			case <-die2:
+			}
+			stream.Close()
+			inConn.Close()
+			s.log.Printf("%s server %s stream released", key, serverID)
+			break
+		}
+	}
+
+}

services/mux/mux_client.go

@@ -0,0 +1,320 @@
+package mux
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	logger "log"
+	"net"
+	"time"
+
+	"github.com/golang/snappy"
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
+)
+
+type MuxClientArgs struct {
+	Parent       *string
+	ParentType   *string
+	CertFile     *string
+	KeyFile      *string
+	CertBytes    []byte
+	KeyBytes     []byte
+	Key          *string
+	Timeout      *int
+	IsCompress   *bool
+	SessionCount *int
+	KCP          kcpcfg.KCPConfigArgs
+}
+type MuxClient struct {
+	cfg      MuxClientArgs
+	isStop   bool
+	sessions utils.ConcurrentMap
+	log      *logger.Logger
+}
+
+func NewMuxClient() services.Service {
+	return &MuxClient{
+		cfg:      MuxClientArgs{},
+		isStop:   false,
+		sessions: utils.NewConcurrentMap(),
+	}
+}
+
+func (s *MuxClient) InitService() (err error) {
+	return
+}
+
+func (s *MuxClient) CheckArgs() (err error) {
+	if *s.cfg.Parent != "" {
+		s.log.Printf("use tls parent %s", *s.cfg.Parent)
+	} else {
+		err = fmt.Errorf("parent required")
+		return
+	}
+	if *s.cfg.CertFile == "" || *s.cfg.KeyFile == "" {
+		err = fmt.Errorf("cert and key file required")
+		return
+	}
+	if *s.cfg.ParentType == "tls" {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+func (s *MuxClient) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop client service crashed,%s", e)
+		} else {
+			s.log.Printf("service client stoped")
+		}
+	}()
+	s.isStop = true
+	for _, sess := range s.sessions.Items() {
+		sess.(*smux.Session).Close()
+	}
+}
+func (s *MuxClient) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(MuxClientArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	s.log.Printf("client started")
+	count := 1
+	if *s.cfg.SessionCount > 0 {
+		count = *s.cfg.SessionCount
+	}
+	for i := 1; i <= count; i++ {
+		key := fmt.Sprintf("worker[%d]", i)
+		s.log.Printf("session %s started", key)
+		go func(i int) {
+			defer func() {
+				e := recover()
+				if e != nil {
+					s.log.Printf("session worker crashed: %s", e)
+				}
+			}()
+			for {
+				if s.isStop {
+					return
+				}
+				conn, err := s.getParentConn()
+				if err != nil {
+					s.log.Printf("connection err: %s, retrying...", err)
+					time.Sleep(time.Second * 3)
+					continue
+				}
+				conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+				_, err = conn.Write(utils.BuildPacket(CONN_CLIENT, fmt.Sprintf("%s-%d", *s.cfg.Key, i)))
+				conn.SetDeadline(time.Time{})
+				if err != nil {
+					conn.Close()
+					s.log.Printf("connection err: %s, retrying...", err)
+					time.Sleep(time.Second * 3)
+					continue
+				}
+				session, err := smux.Server(conn, nil)
+				if err != nil {
+					s.log.Printf("session err: %s, retrying...", err)
+					conn.Close()
+					time.Sleep(time.Second * 3)
+					continue
+				}
+				if _sess, ok := s.sessions.Get(key); ok {
+					_sess.(*smux.Session).Close()
+				}
+				s.sessions.Set(key, session)
+				for {
+					if s.isStop {
+						return
+					}
+					stream, err := session.AcceptStream()
+					if err != nil {
+						s.log.Printf("accept stream err: %s, retrying...", err)
+						session.Close()
+						time.Sleep(time.Second * 3)
+						break
+					}
+					go func() {
+						defer func() {
+							e := recover()
+							if e != nil {
+								s.log.Printf("stream handler crashed: %s", e)
+							}
+						}()
+						var ID, clientLocalAddr, serverID string
+						stream.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+						err = utils.ReadPacketData(stream, &ID, &clientLocalAddr, &serverID)
+						stream.SetDeadline(time.Time{})
+						if err != nil {
+							s.log.Printf("read stream signal err: %s", err)
+							stream.Close()
+							return
+						}
+						s.log.Printf("worker[%d] signal revecived,server %s stream %s %s", i, serverID, ID, clientLocalAddr)
+						protocol := clientLocalAddr[:3]
+						localAddr := clientLocalAddr[4:]
+						if protocol == "udp" {
+							s.ServeUDP(stream, localAddr, ID)
+						} else {
+							s.ServeConn(stream, localAddr, ID)
+						}
+					}()
+				}
+			}
+		}(i)
+	}
+	return
+}
+func (s *MuxClient) Clean() {
+	s.StopService()
+}
+func (s *MuxClient) getParentConn() (conn net.Conn, err error) {
+	if *s.cfg.ParentType == "tls" {
+		var _conn tls.Conn
+		_conn, err = utils.TlsConnectHost(*s.cfg.Parent, *s.cfg.Timeout, s.cfg.CertBytes, s.cfg.KeyBytes, nil)
+		if err == nil {
+			conn = net.Conn(&_conn)
+		}
+	} else if *s.cfg.ParentType == "kcp" {
+		conn, err = utils.ConnectKCPHost(*s.cfg.Parent, s.cfg.KCP)
+	} else {
+		conn, err = utils.ConnectHost(*s.cfg.Parent, *s.cfg.Timeout)
+	}
+	return
+}
+func (s *MuxClient) ServeUDP(inConn *smux.Stream, localAddr, ID string) {
+
+	for {
+		if s.isStop {
+			return
+		}
+		inConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		srcAddr, body, err := utils.ReadUDPPacket(inConn)
+		inConn.SetDeadline(time.Time{})
+		if err != nil {
+			s.log.Printf("udp packet revecived fail, err: %s", err)
+			s.log.Printf("connection %s released", ID)
+			inConn.Close()
+			break
+		} else {
+			//s.log.Printf("udp packet revecived:%s,%v", srcAddr, body)
+			go func() {
+				defer func() {
+					if e := recover(); e != nil {
+						s.log.Printf("client processUDPPacket crashed,err: %s", e)
+					}
+				}()
+				s.processUDPPacket(inConn, srcAddr, localAddr, body)
+			}()
+
+		}
+
+	}
+	// }
+}
+func (s *MuxClient) processUDPPacket(inConn *smux.Stream, srcAddr, localAddr string, body []byte) {
+	dstAddr, err := net.ResolveUDPAddr("udp", localAddr)
+	if err != nil {
+		s.log.Printf("can't resolve address: %s", err)
+		inConn.Close()
+		return
+	}
+	clientSrcAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+	conn, err := net.DialUDP("udp", clientSrcAddr, dstAddr)
+	if err != nil {
+		s.log.Printf("connect to udp %s fail,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+	_, err = conn.Write(body)
+	conn.SetDeadline(time.Time{})
+	if err != nil {
+		s.log.Printf("send udp packet to %s fail,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	//s.log.Printf("send udp packet to %s success", dstAddr.String())
+	buf := make([]byte, 1024)
+	conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+	length, _, err := conn.ReadFromUDP(buf)
+	conn.SetDeadline(time.Time{})
+	if err != nil {
+		s.log.Printf("read udp response from %s fail ,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	respBody := buf[0:length]
+	//s.log.Printf("revecived udp packet from %s , %v", dstAddr.String(), respBody)
+	bs := utils.UDPPacket(srcAddr, respBody)
+	(*inConn).SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+	_, err = (*inConn).Write(bs)
+	(*inConn).SetDeadline(time.Time{})
+	if err != nil {
+		s.log.Printf("send udp response fail ,ERR:%s", err)
+		inConn.Close()
+		return
+	}
+	//s.log.Printf("send udp response success ,from:%s ,%d ,%v", dstAddr.String(), len(bs), bs)
+}
+func (s *MuxClient) ServeConn(inConn *smux.Stream, localAddr, ID string) {
+	var err error
+	var outConn net.Conn
+	i := 0
+	for {
+		if s.isStop {
+			return
+		}
+		i++
+		outConn, err = utils.ConnectHost(localAddr, *s.cfg.Timeout)
+		if err == nil || i == 3 {
+			break
+		} else {
+			if i == 3 {
+				s.log.Printf("connect to %s err: %s, retrying...", localAddr, err)
+				time.Sleep(2 * time.Second)
+				continue
+			}
+		}
+	}
+	if err != nil {
+		inConn.Close()
+		utils.CloseConn(&outConn)
+		s.log.Printf("build connection error, err: %s", err)
+		return
+	}
+
+	s.log.Printf("stream %s created", ID)
+	if *s.cfg.IsCompress {
+		die1 := make(chan bool, 1)
+		die2 := make(chan bool, 1)
+		go func() {
+			io.Copy(outConn, snappy.NewReader(inConn))
+			die1 <- true
+		}()
+		go func() {
+			io.Copy(snappy.NewWriter(inConn), outConn)
+			die2 <- true
+		}()
+		select {
+		case <-die1:
+		case <-die2:
+		}
+		outConn.Close()
+		inConn.Close()
+		s.log.Printf("%s stream %s released", *s.cfg.Key, ID)
+	} else {
+		utils.IoBind(inConn, outConn, func(err interface{}) {
+			s.log.Printf("stream %s released", ID)
+		}, s.log)
+	}
+}

services/mux/mux_server.go

@@ -0,0 +1,476 @@
+package mux
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	logger "log"
+	"math/rand"
+	"net"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+
+	"github.com/golang/snappy"
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
+)
+
+type MuxServerArgs struct {
+	Parent       *string
+	ParentType   *string
+	CertFile     *string
+	KeyFile      *string
+	CertBytes    []byte
+	KeyBytes     []byte
+	Local        *string
+	IsUDP        *bool
+	Key          *string
+	Remote       *string
+	Timeout      *int
+	Route        *[]string
+	Mgr          *MuxServerManager
+	IsCompress   *bool
+	SessionCount *int
+	KCP          kcpcfg.KCPConfigArgs
+}
+
+type MuxUDPItem struct {
+	packet    *[]byte
+	localAddr *net.UDPAddr
+	srcAddr   *net.UDPAddr
+}
+
+type MuxServerManager struct {
+	cfg      MuxServerArgs
+	udpChn   chan MuxUDPItem
+	serverID string
+	servers  []*services.Service
+	log      *logger.Logger
+}
+
+func NewMuxServerManager() services.Service {
+	return &MuxServerManager{
+		cfg:      MuxServerArgs{},
+		udpChn:   make(chan MuxUDPItem, 50000),
+		serverID: utils.Uniqueid(),
+		servers:  []*services.Service{},
+	}
+}
+
+func (s *MuxServerManager) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(MuxServerArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if *s.cfg.Parent != "" {
+		s.log.Printf("use %s parent %s", *s.cfg.ParentType, *s.cfg.Parent)
+	} else {
+		err = fmt.Errorf("parent required")
+		return
+	}
+
+	if err = s.InitService(); err != nil {
+		return
+	}
+
+	s.log.Printf("server id: %s", s.serverID)
+	//s.log.Printf("route:%v", *s.cfg.Route)
+	for _, _info := range *s.cfg.Route {
+		if _info == "" {
+			continue
+		}
+		IsUDP := *s.cfg.IsUDP
+		if strings.HasPrefix(_info, "udp://") {
+			IsUDP = true
+		}
+		info := strings.TrimPrefix(_info, "udp://")
+		info = strings.TrimPrefix(info, "tcp://")
+		_routeInfo := strings.Split(info, "@")
+		server := NewMuxServer()
+
+		local := _routeInfo[0]
+		remote := _routeInfo[1]
+		KEY := *s.cfg.Key
+		if strings.HasPrefix(remote, "[") {
+			KEY = remote[1:strings.LastIndex(remote, "]")]
+			remote = remote[strings.LastIndex(remote, "]")+1:]
+		}
+		if strings.HasPrefix(remote, ":") {
+			remote = fmt.Sprintf("127.0.0.1%s", remote)
+		}
+		err = server.Start(MuxServerArgs{
+			CertBytes:    s.cfg.CertBytes,
+			KeyBytes:     s.cfg.KeyBytes,
+			Parent:       s.cfg.Parent,
+			CertFile:     s.cfg.CertFile,
+			KeyFile:      s.cfg.KeyFile,
+			Local:        &local,
+			IsUDP:        &IsUDP,
+			Remote:       &remote,
+			Key:          &KEY,
+			Timeout:      s.cfg.Timeout,
+			Mgr:          s,
+			IsCompress:   s.cfg.IsCompress,
+			SessionCount: s.cfg.SessionCount,
+			KCP:          s.cfg.KCP,
+			ParentType:   s.cfg.ParentType,
+		}, log)
+
+		if err != nil {
+			return
+		}
+		s.servers = append(s.servers, &server)
+	}
+	return
+}
+func (s *MuxServerManager) Clean() {
+	s.StopService()
+}
+func (s *MuxServerManager) StopService() {
+	for _, server := range s.servers {
+		(*server).Clean()
+	}
+}
+func (s *MuxServerManager) CheckArgs() (err error) {
+	if *s.cfg.CertFile == "" || *s.cfg.KeyFile == "" {
+		err = fmt.Errorf("cert and key file required")
+		return
+	}
+	if *s.cfg.ParentType == "tls" {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+func (s *MuxServerManager) InitService() (err error) {
+	return
+}
+
+type MuxServer struct {
+	cfg      MuxServerArgs
+	udpChn   chan MuxUDPItem
+	sc       utils.ServerChannel
+	sessions utils.ConcurrentMap
+	lockChn  chan bool
+	isStop   bool
+	udpConn  *net.Conn
+	log      *logger.Logger
+}
+
+func NewMuxServer() services.Service {
+	return &MuxServer{
+		cfg:      MuxServerArgs{},
+		udpChn:   make(chan MuxUDPItem, 50000),
+		lockChn:  make(chan bool, 1),
+		sessions: utils.NewConcurrentMap(),
+		isStop:   false,
+	}
+}
+
+func (s *MuxServer) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop server service crashed,%s", e)
+		} else {
+			s.log.Printf("service server stoped")
+		}
+	}()
+	s.isStop = true
+	for _, sess := range s.sessions.Items() {
+		sess.(*smux.Session).Close()
+	}
+	if s.sc.Listener != nil {
+		(*s.sc.Listener).Close()
+	}
+	if s.sc.UDPListener != nil {
+		(*s.sc.UDPListener).Close()
+	}
+	if s.udpConn != nil {
+		(*s.udpConn).Close()
+	}
+}
+func (s *MuxServer) InitService() (err error) {
+	s.UDPConnDeamon()
+	return
+}
+func (s *MuxServer) CheckArgs() (err error) {
+	if *s.cfg.Remote == "" {
+		err = fmt.Errorf("remote required")
+		return
+	}
+	return
+}
+
+func (s *MuxServer) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(MuxServerArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	host, port, _ := net.SplitHostPort(*s.cfg.Local)
+	p, _ := strconv.Atoi(port)
+	s.sc = utils.NewServerChannel(host, p, s.log)
+	if *s.cfg.IsUDP {
+		err = s.sc.ListenUDP(func(packet []byte, localAddr, srcAddr *net.UDPAddr) {
+			s.udpChn <- MuxUDPItem{
+				packet:    &packet,
+				localAddr: localAddr,
+				srcAddr:   srcAddr,
+			}
+		})
+		if err != nil {
+			return
+		}
+		s.log.Printf("server on %s", (*s.sc.UDPListener).LocalAddr())
+	} else {
+		err = s.sc.ListenTCP(func(inConn net.Conn) {
+			defer func() {
+				if err := recover(); err != nil {
+					s.log.Printf("connection handler crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+				}
+			}()
+			var outConn net.Conn
+			var ID string
+			for {
+				if s.isStop {
+					return
+				}
+				outConn, ID, err = s.GetOutConn()
+				if err != nil {
+					utils.CloseConn(&outConn)
+					s.log.Printf("connect to %s fail, err: %s, retrying...", *s.cfg.Parent, err)
+					time.Sleep(time.Second * 3)
+					continue
+				} else {
+					break
+				}
+			}
+			s.log.Printf("%s stream %s created", *s.cfg.Key, ID)
+			if *s.cfg.IsCompress {
+				die1 := make(chan bool, 1)
+				die2 := make(chan bool, 1)
+				go func() {
+					io.Copy(inConn, snappy.NewReader(outConn))
+					die1 <- true
+				}()
+				go func() {
+					io.Copy(snappy.NewWriter(outConn), inConn)
+					die2 <- true
+				}()
+				select {
+				case <-die1:
+				case <-die2:
+				}
+				outConn.Close()
+				inConn.Close()
+				s.log.Printf("%s stream %s released", *s.cfg.Key, ID)
+			} else {
+				utils.IoBind(inConn, outConn, func(err interface{}) {
+					s.log.Printf("%s stream %s released", *s.cfg.Key, ID)
+				}, s.log)
+			}
+		})
+		if err != nil {
+			return
+		}
+		s.log.Printf("server on %s", (*s.sc.Listener).Addr())
+	}
+	return
+}
+func (s *MuxServer) Clean() {
+	s.StopService()
+}
+func (s *MuxServer) GetOutConn() (outConn net.Conn, ID string, err error) {
+	i := 1
+	if *s.cfg.SessionCount > 0 {
+		i = rand.Intn(*s.cfg.SessionCount)
+	}
+	outConn, err = s.GetConn(fmt.Sprintf("%d", i))
+	if err != nil {
+		s.log.Printf("connection err: %s", err)
+		return
+	}
+	remoteAddr := "tcp:" + *s.cfg.Remote
+	if *s.cfg.IsUDP {
+		remoteAddr = "udp:" + *s.cfg.Remote
+	}
+	ID = utils.Uniqueid()
+	outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+	_, err = outConn.Write(utils.BuildPacketData(ID, remoteAddr, s.cfg.Mgr.serverID))
+	outConn.SetDeadline(time.Time{})
+	if err != nil {
+		s.log.Printf("write stream data err: %s ,retrying...", err)
+		utils.CloseConn(&outConn)
+		return
+	}
+	return
+}
+func (s *MuxServer) GetConn(index string) (conn net.Conn, err error) {
+	select {
+	case s.lockChn <- true:
+	default:
+		err = fmt.Errorf("can not connect at same time")
+		return
+	}
+	defer func() {
+		<-s.lockChn
+	}()
+	var session *smux.Session
+	_session, ok := s.sessions.Get(index)
+	if !ok {
+		var c net.Conn
+		c, err = s.getParentConn()
+		if err != nil {
+			return
+		}
+		c.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		_, err = c.Write(utils.BuildPacket(CONN_SERVER, *s.cfg.Key, s.cfg.Mgr.serverID))
+		c.SetDeadline(time.Time{})
+		if err != nil {
+			c.Close()
+			return
+		}
+		if err == nil {
+			session, err = smux.Client(c, nil)
+			if err != nil {
+				return
+			}
+		}
+		if _sess, ok := s.sessions.Get(index); ok {
+			_sess.(*smux.Session).Close()
+		}
+		s.sessions.Set(index, session)
+		s.log.Printf("session[%s] created", index)
+		go func() {
+			for {
+				if s.isStop {
+					return
+				}
+				if session.IsClosed() {
+					s.sessions.Remove(index)
+					break
+				}
+				time.Sleep(time.Second * 5)
+			}
+		}()
+	} else {
+		session = _session.(*smux.Session)
+	}
+	conn, err = session.OpenStream()
+	if err != nil {
+		session.Close()
+		s.sessions.Remove(index)
+	}
+	return
+}
+func (s *MuxServer) getParentConn() (conn net.Conn, err error) {
+	if *s.cfg.ParentType == "tls" {
+		var _conn tls.Conn
+		_conn, err = utils.TlsConnectHost(*s.cfg.Parent, *s.cfg.Timeout, s.cfg.CertBytes, s.cfg.KeyBytes, nil)
+		if err == nil {
+			conn = net.Conn(&_conn)
+		}
+	} else if *s.cfg.ParentType == "kcp" {
+		conn, err = utils.ConnectKCPHost(*s.cfg.Parent, s.cfg.KCP)
+	} else {
+		conn, err = utils.ConnectHost(*s.cfg.Parent, *s.cfg.Timeout)
+	}
+	return
+}
+func (s *MuxServer) UDPConnDeamon() {
+	go func() {
+		defer func() {
+			if err := recover(); err != nil {
+				s.log.Printf("udp conn deamon crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+			}
+		}()
+		var outConn net.Conn
+		var ID string
+		var err error
+		for {
+			if s.isStop {
+				return
+			}
+			item := <-s.udpChn
+		RETRY:
+			if s.isStop {
+				return
+			}
+			if outConn == nil {
+				for {
+					if s.isStop {
+						return
+					}
+					outConn, ID, err = s.GetOutConn()
+					if err != nil {
+						outConn = nil
+						utils.CloseConn(&outConn)
+						s.log.Printf("connect to %s fail, err: %s, retrying...", *s.cfg.Parent, err)
+						time.Sleep(time.Second * 3)
+						continue
+					} else {
+						go func(outConn net.Conn, ID string) {
+							if s.udpConn != nil {
+								(*s.udpConn).Close()
+							}
+							s.udpConn = &outConn
+							for {
+								if s.isStop {
+									return
+								}
+								outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+								srcAddrFromConn, body, err := utils.ReadUDPPacket(outConn)
+								outConn.SetDeadline(time.Time{})
+								if err != nil {
+									s.log.Printf("parse revecived udp packet fail, err: %s ,%v", err, body)
+									s.log.Printf("UDP deamon connection %s exited", ID)
+									break
+								}
+								//s.log.Printf("udp packet revecived over parent , local:%s", srcAddrFromConn)
+								_srcAddr := strings.Split(srcAddrFromConn, ":")
+								if len(_srcAddr) != 2 {
+									s.log.Printf("parse revecived udp packet fail, addr error : %s", srcAddrFromConn)
+									continue
+								}
+								port, _ := strconv.Atoi(_srcAddr[1])
+								dstAddr := &net.UDPAddr{IP: net.ParseIP(_srcAddr[0]), Port: port}
+								s.sc.UDPListener.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+								_, err = s.sc.UDPListener.WriteToUDP(body, dstAddr)
+								s.sc.UDPListener.SetDeadline(time.Time{})
+								if err != nil {
+									s.log.Printf("udp response to local %s fail,ERR:%s", srcAddrFromConn, err)
+									continue
+								}
+								//s.log.Printf("udp response to local %s success , %v", srcAddrFromConn, body)
+							}
+						}(outConn, ID)
+						break
+					}
+				}
+			}
+			outConn.SetWriteDeadline(time.Now().Add(time.Second))
+			_, err = outConn.Write(utils.UDPPacket(item.srcAddr.String(), *item.packet))
+			outConn.SetWriteDeadline(time.Time{})
+			if err != nil {
+				utils.CloseConn(&outConn)
+				outConn = nil
+				s.log.Printf("write udp packet to %s fail ,flush err:%s ,retrying...", *s.cfg.Parent, err)
+				goto RETRY
+			}
+			//s.log.Printf("write packet %v", *item.packet)
+		}
+	}()
+}

services/service.go

@@ -0,0 +1,64 @@
+package services
+
+import (
+	"fmt"
+	logger "log"
+	"runtime/debug"
+)
+
+type Service interface {
+	Start(args interface{}, log *logger.Logger) (err error)
+	Clean()
+}
+type ServiceItem struct {
+	S    Service
+	Args interface{}
+	Name string
+	Log  *logger.Logger
+}
+
+var servicesMap = map[string]*ServiceItem{}
+
+func Regist(name string, s Service, args interface{}, log *logger.Logger) {
+	Stop(name)
+	servicesMap[name] = &ServiceItem{
+		S:    s,
+		Args: args,
+		Name: name,
+		Log:  log,
+	}
+}
+func GetService(name string) *ServiceItem {
+	if s, ok := servicesMap[name]; ok && s.S != nil {
+		return s
+	}
+	return nil
+
+}
+func Stop(name string) {
+	if s, ok := servicesMap[name]; ok && s.S != nil {
+		s.S.Clean()
+	}
+}
+func Run(name string, args interface{}) (service *ServiceItem, err error) {
+	service, ok := servicesMap[name]
+	if ok {
+		defer func() {
+			e := recover()
+			if e != nil {
+				err = fmt.Errorf("%s servcie crashed, ERR: %s\ntrace:%s", name, e, string(debug.Stack()))
+			}
+		}()
+		if args != nil {
+			err = service.S.Start(args, service.Log)
+		} else {
+			err = service.S.Start(service.Args, service.Log)
+		}
+		if err != nil {
+			err = fmt.Errorf("%s servcie fail, ERR: %s", name, err)
+		}
+	} else {
+		err = fmt.Errorf("service %s not found", name)
+	}
+	return
+}

services/socks/socks.go

@@ -0,0 +1,636 @@
+package socks
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	"io/ioutil"
+	logger "log"
+	"net"
+	"runtime/debug"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+	"github.com/snail007/goproxy/utils/conncrypt"
+	"github.com/snail007/goproxy/utils/socks"
+	"golang.org/x/crypto/ssh"
+)
+
+type SocksArgs struct {
+	Parent         *string
+	ParentType     *string
+	Local          *string
+	LocalType      *string
+	CertFile       *string
+	KeyFile        *string
+	CaCertFile     *string
+	CaCertBytes    []byte
+	CertBytes      []byte
+	KeyBytes       []byte
+	SSHKeyFile     *string
+	SSHKeyFileSalt *string
+	SSHPassword    *string
+	SSHUser        *string
+	SSHKeyBytes    []byte
+	SSHAuthMethod  ssh.AuthMethod
+	Timeout        *int
+	Always         *bool
+	Interval       *int
+	Blocked        *string
+	Direct         *string
+	AuthFile       *string
+	Auth           *[]string
+	AuthURL        *string
+	AuthURLOkCode  *int
+	AuthURLTimeout *int
+	AuthURLRetry   *int
+	KCP            kcpcfg.KCPConfigArgs
+	LocalIPS       *[]string
+	DNSAddress     *string
+	DNSTTL         *int
+	LocalKey       *string
+	ParentKey      *string
+	LocalCompress  *bool
+	ParentCompress *bool
+}
+type Socks struct {
+	cfg                   SocksArgs
+	checker               utils.Checker
+	basicAuth             utils.BasicAuth
+	sshClient             *ssh.Client
+	lockChn               chan bool
+	udpSC                 utils.ServerChannel
+	sc                    *utils.ServerChannel
+	domainResolver        utils.DomainResolver
+	isStop                bool
+	userConns             utils.ConcurrentMap
+	log                   *logger.Logger
+	udpRelatedPacketConns utils.ConcurrentMap
+	udpLocalKey           []byte
+	udpParentKey          []byte
+}
+
+func NewSocks() services.Service {
+	return &Socks{
+		cfg:                   SocksArgs{},
+		checker:               utils.Checker{},
+		basicAuth:             utils.BasicAuth{},
+		lockChn:               make(chan bool, 1),
+		isStop:                false,
+		userConns:             utils.NewConcurrentMap(),
+		udpRelatedPacketConns: utils.NewConcurrentMap(),
+	}
+}
+
+func (s *Socks) CheckArgs() (err error) {
+
+	if *s.cfg.LocalType == "tls" || (*s.cfg.Parent != "" && *s.cfg.ParentType == "tls") {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+		if *s.cfg.CaCertFile != "" {
+			s.cfg.CaCertBytes, err = ioutil.ReadFile(*s.cfg.CaCertFile)
+			if err != nil {
+				err = fmt.Errorf("read ca file error,ERR:%s", err)
+				return
+			}
+		}
+	}
+	if *s.cfg.Parent != "" {
+		if *s.cfg.ParentType == "" {
+			err = fmt.Errorf("parent type unkown,use -T <tls|tcp|ssh|kcp>")
+			return
+		}
+		if *s.cfg.ParentType == "ssh" {
+			if *s.cfg.SSHUser == "" {
+				err = fmt.Errorf("ssh user required")
+				return
+			}
+			if *s.cfg.SSHKeyFile == "" && *s.cfg.SSHPassword == "" {
+				err = fmt.Errorf("ssh password or key required")
+				return
+			}
+			if *s.cfg.SSHPassword != "" {
+				s.cfg.SSHAuthMethod = ssh.Password(*s.cfg.SSHPassword)
+			} else {
+				var SSHSigner ssh.Signer
+				s.cfg.SSHKeyBytes, err = ioutil.ReadFile(*s.cfg.SSHKeyFile)
+				if err != nil {
+					err = fmt.Errorf("read key file ERR: %s", err)
+					return
+				}
+				if *s.cfg.SSHKeyFileSalt != "" {
+					SSHSigner, err = ssh.ParsePrivateKeyWithPassphrase(s.cfg.SSHKeyBytes, []byte(*s.cfg.SSHKeyFileSalt))
+				} else {
+					SSHSigner, err = ssh.ParsePrivateKey(s.cfg.SSHKeyBytes)
+				}
+				if err != nil {
+					err = fmt.Errorf("parse ssh private key fail,ERR: %s", err)
+					return
+				}
+				s.cfg.SSHAuthMethod = ssh.PublicKeys(SSHSigner)
+			}
+		}
+	}
+	s.udpLocalKey = s.LocalUDPKey()
+	s.udpParentKey = s.ParentUDPKey()
+	//s.log.Printf("udpLocalKey : %v , udpParentKey : %v", s.udpLocalKey, s.udpParentKey)
+	return
+}
+func (s *Socks) InitService() (err error) {
+	s.InitBasicAuth()
+	if *s.cfg.DNSAddress != "" {
+		(*s).domainResolver = utils.NewDomainResolver(*s.cfg.DNSAddress, *s.cfg.DNSTTL, s.log)
+	}
+	s.checker = utils.NewChecker(*s.cfg.Timeout, int64(*s.cfg.Interval), *s.cfg.Blocked, *s.cfg.Direct, s.log)
+	if *s.cfg.ParentType == "ssh" {
+		e := s.ConnectSSH()
+		if e != nil {
+			err = fmt.Errorf("init service fail, ERR: %s", e)
+			return
+		}
+		go func() {
+			//循环检查ssh网络连通性
+			for {
+				if s.isStop {
+					return
+				}
+				conn, err := utils.ConnectHost(s.Resolve(*s.cfg.Parent), *s.cfg.Timeout*2)
+				if err == nil {
+					conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+					_, err = conn.Write([]byte{0})
+					conn.SetDeadline(time.Time{})
+				}
+				if err != nil {
+					if s.sshClient != nil {
+						s.sshClient.Close()
+					}
+					s.log.Printf("ssh offline, retrying...")
+					s.ConnectSSH()
+				} else {
+					conn.Close()
+				}
+				time.Sleep(time.Second * 3)
+			}
+		}()
+	}
+	if *s.cfg.ParentType == "ssh" {
+		s.log.Printf("warn: socks udp not suppored for ssh")
+	}
+	return
+}
+func (s *Socks) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop socks service crashed,%s", e)
+		} else {
+			s.log.Printf("service socks stoped")
+		}
+	}()
+	s.isStop = true
+	s.checker.Stop()
+	if s.sshClient != nil {
+		s.sshClient.Close()
+	}
+	if s.udpSC.UDPListener != nil {
+		s.udpSC.UDPListener.Close()
+	}
+	if s.sc != nil && (*s.sc).Listener != nil {
+		(*(*s.sc).Listener).Close()
+	}
+	for _, c := range s.userConns.Items() {
+		(*c.(*net.Conn)).Close()
+	}
+	for _, c := range s.udpRelatedPacketConns.Items() {
+		(*c.(*net.UDPConn)).Close()
+	}
+}
+func (s *Socks) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	//start()
+	s.cfg = args.(SocksArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		s.InitService()
+	}
+	if *s.cfg.Parent != "" {
+		s.log.Printf("use %s parent %s", *s.cfg.ParentType, *s.cfg.Parent)
+	}
+	sc := utils.NewServerChannelHost(*s.cfg.Local, s.log)
+	if *s.cfg.LocalType == "tcp" {
+		err = sc.ListenTCP(s.socksConnCallback)
+	} else if *s.cfg.LocalType == "tls" {
+		err = sc.ListenTls(s.cfg.CertBytes, s.cfg.KeyBytes, nil, s.socksConnCallback)
+	} else if *s.cfg.LocalType == "kcp" {
+		err = sc.ListenKCP(s.cfg.KCP, s.socksConnCallback, s.log)
+	}
+	if err != nil {
+		return
+	}
+	s.sc = &sc
+	s.log.Printf("%s socks proxy on %s", *s.cfg.LocalType, (*sc.Listener).Addr())
+	return
+}
+func (s *Socks) Clean() {
+	s.StopService()
+}
+
+func (s *Socks) socksConnCallback(inConn net.Conn) {
+	defer func() {
+		if err := recover(); err != nil {
+			s.log.Printf("socks conn handler crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+			inConn.Close()
+		}
+	}()
+	if *s.cfg.LocalCompress {
+		inConn = utils.NewCompConn(inConn)
+	}
+	if *s.cfg.LocalKey != "" {
+		inConn = conncrypt.New(inConn, &conncrypt.Config{
+			Password: *s.cfg.LocalKey,
+		})
+	}
+	//协商开始
+
+	//method select request
+	inConn.SetReadDeadline(time.Now().Add(time.Second * 3))
+	methodReq, err := socks.NewMethodsRequest(inConn)
+	inConn.SetReadDeadline(time.Time{})
+	if err != nil {
+		methodReq.Reply(socks.Method_NONE_ACCEPTABLE)
+		utils.CloseConn(&inConn)
+		if err != io.EOF {
+			s.log.Printf("new methods request fail,ERR: %s", err)
+		}
+		return
+	}
+
+	if !s.IsBasicAuth() {
+		if !methodReq.Select(socks.Method_NO_AUTH) {
+			methodReq.Reply(socks.Method_NONE_ACCEPTABLE)
+			utils.CloseConn(&inConn)
+			s.log.Printf("none method found : Method_NO_AUTH")
+			return
+		}
+		//method select reply
+		err = methodReq.Reply(socks.Method_NO_AUTH)
+		if err != nil {
+			s.log.Printf("reply answer data fail,ERR: %s", err)
+			utils.CloseConn(&inConn)
+			return
+		}
+		// s.log.Printf("% x", methodReq.Bytes())
+	} else {
+		//auth
+		if !methodReq.Select(socks.Method_USER_PASS) {
+			methodReq.Reply(socks.Method_NONE_ACCEPTABLE)
+			utils.CloseConn(&inConn)
+			s.log.Printf("none method found : Method_USER_PASS")
+			return
+		}
+		//method reply need auth
+		err = methodReq.Reply(socks.Method_USER_PASS)
+		if err != nil {
+			s.log.Printf("reply answer data fail,ERR: %s", err)
+			utils.CloseConn(&inConn)
+			return
+		}
+		//read auth
+		buf := make([]byte, 500)
+		inConn.SetReadDeadline(time.Now().Add(time.Second * 3))
+		n, err := inConn.Read(buf)
+		inConn.SetReadDeadline(time.Time{})
+		if err != nil {
+			utils.CloseConn(&inConn)
+			return
+		}
+		r := buf[:n]
+		user := string(r[2 : r[1]+2])
+		pass := string(r[2+r[1]+1:])
+		//s.log.Printf("user:%s,pass:%s", user, pass)
+		//auth
+		_addr := strings.Split(inConn.RemoteAddr().String(), ":")
+		if s.basicAuth.CheckUserPass(user, pass, _addr[0], "") {
+			inConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+			inConn.Write([]byte{0x01, 0x00})
+			inConn.SetDeadline(time.Time{})
+
+		} else {
+			inConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+			inConn.Write([]byte{0x01, 0x01})
+			inConn.SetDeadline(time.Time{})
+
+			utils.CloseConn(&inConn)
+			return
+		}
+	}
+
+	//request detail
+	request, err := socks.NewRequest(inConn)
+	if err != nil {
+		s.log.Printf("read request data fail,ERR: %s", err)
+		utils.CloseConn(&inConn)
+		return
+	}
+	//协商结束
+
+	switch request.CMD() {
+	case socks.CMD_BIND:
+		//bind 不支持
+		request.TCPReply(socks.REP_UNKNOWN)
+		utils.CloseConn(&inConn)
+		return
+	case socks.CMD_CONNECT:
+		//tcp
+		s.proxyTCP(&inConn, methodReq, request)
+	case socks.CMD_ASSOCIATE:
+		//udp
+		s.proxyUDP(&inConn, methodReq, request)
+	}
+
+}
+
+func (s *Socks) proxyTCP(inConn *net.Conn, methodReq socks.MethodsRequest, request socks.Request) {
+	var outConn net.Conn
+	var err interface{}
+	useProxy := true
+	tryCount := 0
+	maxTryCount := 5
+	//防止死循环
+	if s.IsDeadLoop((*inConn).LocalAddr().String(), request.Host()) {
+		utils.CloseConn(inConn)
+		s.log.Printf("dead loop detected , %s", request.Host())
+		utils.CloseConn(inConn)
+		return
+	}
+	for {
+		if s.isStop {
+			return
+		}
+		if *s.cfg.Always {
+			outConn, err = s.getOutConn(methodReq.Bytes(), request.Bytes(), request.Addr(), true)
+		} else {
+			if *s.cfg.Parent != "" {
+				host, _, _ := net.SplitHostPort(request.Addr())
+				useProxy := false
+				if utils.IsIternalIP(host, *s.cfg.Always) {
+					useProxy = false
+				} else {
+					var isInMap bool
+					useProxy, isInMap, _, _ = s.checker.IsBlocked(request.Addr())
+					if !isInMap {
+						s.checker.Add(request.Addr(), s.Resolve(request.Addr()))
+					}
+				}
+				if useProxy {
+					outConn, err = s.getOutConn(methodReq.Bytes(), request.Bytes(), request.Addr(), true)
+				} else {
+					outConn, err = utils.ConnectHost(s.Resolve(request.Addr()), *s.cfg.Timeout)
+				}
+			} else {
+				outConn, err = utils.ConnectHost(s.Resolve(request.Addr()), *s.cfg.Timeout)
+				useProxy = false
+			}
+		}
+		tryCount++
+		if err == nil || tryCount > maxTryCount || *s.cfg.Parent == "" {
+			break
+		} else {
+			s.log.Printf("get out conn fail,%s,retrying...", err)
+			time.Sleep(time.Second * 2)
+		}
+	}
+	if err != nil {
+		s.log.Printf("get out conn fail,%s", err)
+		request.TCPReply(socks.REP_NETWOR_UNREACHABLE)
+		return
+	}
+
+	s.log.Printf("use proxy %v : %s", useProxy, request.Addr())
+
+	request.TCPReply(socks.REP_SUCCESS)
+	inAddr := (*inConn).RemoteAddr().String()
+	//inLocalAddr := (*inConn).LocalAddr().String()
+
+	s.log.Printf("conn %s - %s connected", inAddr, request.Addr())
+	utils.IoBind(*inConn, outConn, func(err interface{}) {
+		s.log.Printf("conn %s - %s released", inAddr, request.Addr())
+		s.userConns.Remove(inAddr)
+	}, s.log)
+	if c, ok := s.userConns.Get(inAddr); ok {
+		(*c.(*net.Conn)).Close()
+		s.userConns.Remove(inAddr)
+	}
+	s.userConns.Set(inAddr, inConn)
+}
+func (s *Socks) getOutConn(methodBytes, reqBytes []byte, host string, handshake bool) (outConn net.Conn, err interface{}) {
+	switch *s.cfg.ParentType {
+	case "kcp":
+		fallthrough
+	case "tls":
+		fallthrough
+	case "tcp":
+		if *s.cfg.ParentType == "tls" {
+			var _outConn tls.Conn
+			_outConn, err = utils.TlsConnectHost(s.Resolve(*s.cfg.Parent), *s.cfg.Timeout, s.cfg.CertBytes, s.cfg.KeyBytes, nil)
+			outConn = net.Conn(&_outConn)
+		} else if *s.cfg.ParentType == "kcp" {
+			outConn, err = utils.ConnectKCPHost(s.Resolve(*s.cfg.Parent), s.cfg.KCP)
+		} else {
+			outConn, err = utils.ConnectHost(s.Resolve(*s.cfg.Parent), *s.cfg.Timeout)
+		}
+		if err != nil {
+			err = fmt.Errorf("connect fail,%s", err)
+			return
+		}
+		if *s.cfg.ParentCompress {
+			outConn = utils.NewCompConn(outConn)
+		}
+		if *s.cfg.ParentKey != "" {
+			outConn = conncrypt.New(outConn, &conncrypt.Config{
+				Password: *s.cfg.ParentKey,
+			})
+		}
+		if !handshake {
+			return
+		}
+		var buf = make([]byte, 1024)
+		//var n int
+		outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		_, err = outConn.Write(methodBytes)
+		outConn.SetDeadline(time.Time{})
+		if err != nil {
+			err = fmt.Errorf("write method fail,%s", err)
+			return
+		}
+		outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		_, err = outConn.Read(buf)
+		outConn.SetDeadline(time.Time{})
+		if err != nil {
+			err = fmt.Errorf("read method reply fail,%s", err)
+			return
+		}
+		//resp := buf[:n]
+		//s.log.Printf("resp:%v", resp)
+		outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		_, err = outConn.Write(reqBytes)
+		outConn.SetDeadline(time.Time{})
+		if err != nil {
+			err = fmt.Errorf("write req detail fail,%s", err)
+			return
+		}
+		outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		_, err = outConn.Read(buf)
+		outConn.SetDeadline(time.Time{})
+		if err != nil {
+			err = fmt.Errorf("read req reply fail,%s", err)
+			return
+		}
+		//result := buf[:n]
+		//s.log.Printf("result:%v", result)
+
+	case "ssh":
+		maxTryCount := 1
+		tryCount := 0
+	RETRY:
+		if tryCount >= maxTryCount || s.isStop {
+			return
+		}
+		wait := make(chan bool, 1)
+		go func() {
+			defer func() {
+				if err == nil {
+					err = recover()
+				}
+				wait <- true
+			}()
+			outConn, err = s.sshClient.Dial("tcp", host)
+		}()
+		select {
+		case <-wait:
+		case <-time.After(time.Millisecond * time.Duration(*s.cfg.Timeout) * 2):
+			err = fmt.Errorf("ssh dial %s timeout", host)
+			s.sshClient.Close()
+		}
+		if err != nil {
+			s.log.Printf("connect ssh fail, ERR: %s, retrying...", err)
+			e := s.ConnectSSH()
+			if e == nil {
+				tryCount++
+				time.Sleep(time.Second * 3)
+				goto RETRY
+			} else {
+				err = e
+			}
+		}
+	}
+
+	return
+}
+func (s *Socks) ConnectSSH() (err error) {
+	select {
+	case s.lockChn <- true:
+	default:
+		err = fmt.Errorf("can not connect at same time")
+		return
+	}
+	config := ssh.ClientConfig{
+		Timeout: time.Duration(*s.cfg.Timeout) * time.Millisecond,
+		User:    *s.cfg.SSHUser,
+		Auth:    []ssh.AuthMethod{s.cfg.SSHAuthMethod},
+		HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
+			return nil
+		},
+	}
+	if s.sshClient != nil {
+		s.sshClient.Close()
+	}
+	s.sshClient, err = ssh.Dial("tcp", s.Resolve(*s.cfg.Parent), &config)
+	<-s.lockChn
+	return
+}
+func (s *Socks) InitBasicAuth() (err error) {
+	if *s.cfg.DNSAddress != "" {
+		s.basicAuth = utils.NewBasicAuth(&(*s).domainResolver, s.log)
+	} else {
+		s.basicAuth = utils.NewBasicAuth(nil, s.log)
+	}
+	if *s.cfg.AuthURL != "" {
+		s.basicAuth.SetAuthURL(*s.cfg.AuthURL, *s.cfg.AuthURLOkCode, *s.cfg.AuthURLTimeout, *s.cfg.AuthURLRetry)
+		s.log.Printf("auth from %s", *s.cfg.AuthURL)
+	}
+	if *s.cfg.AuthFile != "" {
+		var n = 0
+		n, err = s.basicAuth.AddFromFile(*s.cfg.AuthFile)
+		if err != nil {
+			err = fmt.Errorf("auth-file ERR:%s", err)
+			return
+		}
+		s.log.Printf("auth data added from file %d , total:%d", n, s.basicAuth.Total())
+	}
+	if len(*s.cfg.Auth) > 0 {
+		n := s.basicAuth.Add(*s.cfg.Auth)
+		s.log.Printf("auth data added %d, total:%d", n, s.basicAuth.Total())
+	}
+	return
+}
+func (s *Socks) IsBasicAuth() bool {
+	return *s.cfg.AuthFile != "" || len(*s.cfg.Auth) > 0 || *s.cfg.AuthURL != ""
+}
+func (s *Socks) IsDeadLoop(inLocalAddr string, host string) bool {
+	inIP, inPort, err := net.SplitHostPort(inLocalAddr)
+	if err != nil {
+		return false
+	}
+	outDomain, outPort, err := net.SplitHostPort(host)
+	if err != nil {
+		return false
+	}
+	if inPort == outPort {
+		var outIPs []net.IP
+		if *s.cfg.DNSAddress != "" {
+			outIPs = []net.IP{net.ParseIP(s.Resolve(outDomain))}
+		} else {
+			outIPs, err = net.LookupIP(outDomain)
+		}
+		if err == nil {
+			for _, ip := range outIPs {
+				if ip.String() == inIP {
+					return true
+				}
+			}
+		}
+		interfaceIPs, err := utils.GetAllInterfaceAddr()
+		for _, ip := range *s.cfg.LocalIPS {
+			interfaceIPs = append(interfaceIPs, net.ParseIP(ip).To4())
+		}
+		if err == nil {
+			for _, localIP := range interfaceIPs {
+				for _, outIP := range outIPs {
+					if localIP.Equal(outIP) {
+						return true
+					}
+				}
+			}
+		}
+	}
+	return false
+}
+func (s *Socks) Resolve(address string) string {
+	if *s.cfg.DNSAddress == "" {
+		return address
+	}
+	ip, err := s.domainResolver.Resolve(address)
+	if err != nil {
+		s.log.Printf("dns error %s , ERR:%s", address, err)
+		return address
+	}
+	return ip
+}

services/socks/udp.go

@@ -0,0 +1,321 @@
+package socks
+
+import (
+	"crypto/md5"
+	"fmt"
+	"net"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/utils"
+	goaes "github.com/snail007/goproxy/utils/aes"
+	"github.com/snail007/goproxy/utils/socks"
+)
+
+func (s *Socks) ParentUDPKey() (key []byte) {
+	switch *s.cfg.ParentType {
+	case "tcp":
+		if *s.cfg.ParentKey != "" {
+			v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.ParentKey)))
+			return []byte(v)[:24]
+		}
+	case "tls":
+		return s.cfg.KeyBytes[:24]
+	case "kcp":
+		v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.KCP.Key)))
+		return []byte(v)[:24]
+	}
+	return
+}
+func (s *Socks) LocalUDPKey() (key []byte) {
+	switch *s.cfg.LocalType {
+	case "tcp":
+		if *s.cfg.LocalKey != "" {
+			v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.LocalKey)))
+			return []byte(v)[:24]
+		}
+	case "tls":
+		return s.cfg.KeyBytes[:24]
+	case "kcp":
+		v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.KCP.Key)))
+		return []byte(v)[:24]
+	}
+	return
+}
+func (s *Socks) proxyUDP(inConn *net.Conn, methodReq socks.MethodsRequest, request socks.Request) {
+	defer func() {
+		if e := recover(); e != nil {
+			s.log.Printf("udp local->out io copy crashed:\n%s\n%s", e, string(debug.Stack()))
+		}
+	}()
+	if *s.cfg.ParentType == "ssh" {
+		utils.CloseConn(inConn)
+		return
+	}
+	srcIP, _, _ := net.SplitHostPort((*inConn).RemoteAddr().String())
+	inconnRemoteAddr := (*inConn).RemoteAddr().String()
+	localAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+	udpListener, err := net.ListenUDP("udp", localAddr)
+	if err != nil {
+		(*inConn).Close()
+		udpListener.Close()
+		s.log.Printf("udp bind fail , %s", err)
+		return
+	}
+	host, _, _ := net.SplitHostPort((*inConn).LocalAddr().String())
+	_, port, _ := net.SplitHostPort(udpListener.LocalAddr().String())
+	if len(*s.cfg.LocalIPS) > 0 {
+		host = (*s.cfg.LocalIPS)[0]
+	}
+	s.log.Printf("proxy udp on %s , for %s", net.JoinHostPort(host, port), inconnRemoteAddr)
+	request.UDPReply(socks.REP_SUCCESS, net.JoinHostPort(host, port))
+	s.userConns.Set(inconnRemoteAddr, inConn)
+	var (
+		outUDPConn       *net.UDPConn
+		outconn          net.Conn
+		outconnLocalAddr string
+		isClosedErr      = func(err error) bool {
+			return err != nil && strings.Contains(err.Error(), "use of closed network connection")
+		}
+		destAddr *net.UDPAddr
+	)
+	var clean = func(msg, err string) {
+		raddr := ""
+		if outUDPConn != nil {
+			raddr = outUDPConn.RemoteAddr().String()
+			outUDPConn.Close()
+		}
+		if msg != "" {
+			if raddr != "" {
+				s.log.Printf("%s , %s , %s -> %s", msg, err, inconnRemoteAddr, raddr)
+			} else {
+				s.log.Printf("%s , %s , from : %s", msg, err, inconnRemoteAddr)
+			}
+		}
+		(*inConn).Close()
+		udpListener.Close()
+		s.userConns.Remove(inconnRemoteAddr)
+		if outconn != nil {
+			outconn.Close()
+		}
+		if outconnLocalAddr != "" {
+			s.userConns.Remove(outconnLocalAddr)
+		}
+	}
+	defer clean("", "")
+	go func() {
+		defer func() {
+			if e := recover(); e != nil {
+				s.log.Printf("udp related client tcp conn read crashed:\n%s\n%s", e, string(debug.Stack()))
+			}
+		}()
+		buf := make([]byte, 1)
+		(*inConn).SetReadDeadline(time.Time{})
+		if _, err := (*inConn).Read(buf); err != nil {
+			clean("udp related tcp conn disconnected with read", err.Error())
+		}
+	}()
+	go func() {
+		defer func() {
+			if e := recover(); e != nil {
+				s.log.Printf("udp related client tcp conn write crashed:\n%s\n%s", e, string(debug.Stack()))
+			}
+		}()
+		for {
+			(*inConn).SetWriteDeadline(time.Now().Add(time.Second * 5))
+			if _, err := (*inConn).Write([]byte{0x00}); err != nil {
+				clean("udp related tcp conn disconnected with write", err.Error())
+				return
+			}
+			(*inConn).SetWriteDeadline(time.Time{})
+			time.Sleep(time.Second * 5)
+		}
+	}()
+	useProxy := true
+	if *s.cfg.Parent != "" {
+		dstHost, _, _ := net.SplitHostPort(request.Addr())
+		if utils.IsIternalIP(dstHost, *s.cfg.Always) {
+			useProxy = false
+		} else {
+			var isInMap bool
+			useProxy, isInMap, _, _ = s.checker.IsBlocked(request.Addr())
+			if !isInMap {
+				s.checker.Add(request.Addr(), s.Resolve(request.Addr()))
+			}
+		}
+	} else {
+		useProxy = false
+	}
+	if useProxy {
+		//parent proxy
+		outconn, err := s.getOutConn(nil, nil, "", false)
+		if err != nil {
+			clean("connnect fail", fmt.Sprintf("%s", err))
+			return
+		}
+		client := socks.NewClientConn(&outconn, "udp", request.Addr(), time.Millisecond*time.Duration(*s.cfg.Timeout), nil, nil)
+		if err = client.Handshake(); err != nil {
+			clean("handshake fail", fmt.Sprintf("%s", err))
+			return
+		}
+		//outconnRemoteAddr := outconn.RemoteAddr().String()
+		outconnLocalAddr = outconn.LocalAddr().String()
+		s.userConns.Set(outconnLocalAddr, &outconn)
+		go func() {
+			defer func() {
+				if e := recover(); e != nil {
+					s.log.Printf("udp related parent tcp conn read crashed:\n%s\n%s", e, string(debug.Stack()))
+				}
+			}()
+			buf := make([]byte, 1)
+			outconn.SetReadDeadline(time.Time{})
+			if _, err := outconn.Read(buf); err != nil {
+				clean("udp parent tcp conn disconnected", fmt.Sprintf("%s", err))
+			}
+		}()
+		//forward to parent udp
+		//s.log.Printf("parent udp address %s", client.UDPAddr)
+		destAddr, _ = net.ResolveUDPAddr("udp", client.UDPAddr)
+	}
+	s.log.Printf("use proxy %v : udp %s", useProxy, request.Addr())
+	//relay
+	for {
+		buf := utils.LeakyBuffer.Get()
+		defer utils.LeakyBuffer.Put(buf)
+		n, srcAddr, err := udpListener.ReadFromUDP(buf)
+		if err != nil {
+			s.log.Printf("udp listener read fail, %s", err.Error())
+			if isClosedErr(err) {
+				return
+			}
+			continue
+		}
+		srcIP0, _, _ := net.SplitHostPort(srcAddr.String())
+		//IP not match drop it
+		if srcIP != srcIP0 {
+			continue
+		}
+		p := socks.NewPacketUDP()
+		//convert data to raw
+		if len(s.udpLocalKey) > 0 {
+			var v []byte
+			v, err = goaes.Decrypt(s.udpLocalKey, buf[:n])
+			if err == nil {
+				err = p.Parse(v)
+			}
+		} else {
+			err = p.Parse(buf[:n])
+		}
+		//err = p.Parse(buf[:n])
+		if err != nil {
+			s.log.Printf("udp listener parse packet fail, %s", err.Error())
+			continue
+		}
+
+		port, _ := strconv.Atoi(p.Port())
+
+		if v, ok := s.udpRelatedPacketConns.Get(srcAddr.String()); !ok {
+			if destAddr == nil {
+				destAddr = &net.UDPAddr{IP: net.ParseIP(p.Host()), Port: port}
+			}
+			outUDPConn, err = net.DialUDP("udp", localAddr, destAddr)
+			if err != nil {
+				s.log.Printf("create out udp conn fail , %s , from : %s", err, srcAddr)
+				continue
+			}
+			s.udpRelatedPacketConns.Set(srcAddr.String(), outUDPConn)
+			go func() {
+				defer func() {
+					if e := recover(); e != nil {
+						s.log.Printf("udp out->local io copy crashed:\n%s\n%s", e, string(debug.Stack()))
+					}
+				}()
+				defer s.udpRelatedPacketConns.Remove(srcAddr.String())
+				//out->local io copy
+				buf := utils.LeakyBuffer.Get()
+				defer utils.LeakyBuffer.Put(buf)
+				for {
+					n, err := outUDPConn.Read(buf)
+					if err != nil {
+						s.log.Printf("read out udp data fail , %s , from : %s", err, srcAddr)
+						if isClosedErr(err) {
+							return
+						}
+						continue
+					}
+					//var dlen = n
+					if useProxy {
+						//forward to local
+						var v []byte
+						//convert parent data to raw
+						if len(s.udpParentKey) > 0 {
+							v, err = goaes.Decrypt(s.udpParentKey, buf[:n])
+							if err != nil {
+								s.log.Printf("udp outconn parse packet fail, %s", err.Error())
+								continue
+							}
+						} else {
+							v = buf[:n]
+						}
+						//now v is raw, try convert v to local
+						if len(s.udpLocalKey) > 0 {
+							v, _ = goaes.Encrypt(s.udpLocalKey, v)
+						}
+						_, err = udpListener.WriteTo(v, srcAddr)
+						// _, err = udpListener.WriteTo(buf[:n], srcAddr)
+					} else {
+						rp := socks.NewPacketUDP()
+						rp.Build(destAddr.String(), buf[:n])
+						v := rp.Bytes()
+						//dlen = len(v)
+						//rp.Bytes() v is raw, try convert to local
+						if len(s.udpLocalKey) > 0 {
+							v, _ = goaes.Encrypt(s.udpLocalKey, v)
+						}
+						_, err = udpListener.WriteTo(v, srcAddr)
+					}
+
+					if err != nil {
+						s.udpRelatedPacketConns.Remove(srcAddr.String())
+						s.log.Printf("write out data to local fail , %s , from : %s", err, srcAddr)
+						if isClosedErr(err) {
+							return
+						}
+						continue
+					} else {
+						//s.log.Printf("send udp data to local success , len %d, for : %s", dlen, srcAddr)
+					}
+				}
+			}()
+		} else {
+			outUDPConn = v.(*net.UDPConn)
+		}
+		//local->out io copy
+		if useProxy {
+			//forward to parent
+			//p is raw, now convert it to parent
+			var v []byte
+			if len(s.udpParentKey) > 0 {
+				v, _ = goaes.Encrypt(s.udpParentKey, p.Bytes())
+			} else {
+				v = p.Bytes()
+			}
+			_, err = outUDPConn.Write(v)
+			// _, err = outUDPConn.Write(p.Bytes())
+		} else {
+			_, err = outUDPConn.Write(p.Data())
+		}
+		if err != nil {
+			if isClosedErr(err) {
+				return
+			}
+			s.log.Printf("send out udp data fail , %s , from : %s", err, srcAddr)
+			continue
+		} else {
+			//s.log.Printf("send udp data to remote success , len %d, for : %s", len(p.Data()), srcAddr)
+		}
+	}
+
+}

services/sps/socksudp.go

@@ -0,0 +1,306 @@
+package sps
+
+import (
+	"crypto/md5"
+	"fmt"
+	"net"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/utils"
+	goaes "github.com/snail007/goproxy/utils/aes"
+	"github.com/snail007/goproxy/utils/conncrypt"
+	"github.com/snail007/goproxy/utils/socks"
+)
+
+func (s *SPS) ParentUDPKey() (key []byte) {
+	switch *s.cfg.ParentType {
+	case "tcp":
+		if *s.cfg.ParentKey != "" {
+			v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.ParentKey)))
+			return []byte(v)[:24]
+		}
+	case "tls":
+		return s.cfg.KeyBytes[:24]
+	case "kcp":
+		v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.KCP.Key)))
+		return []byte(v)[:24]
+	}
+	return
+}
+func (s *SPS) LocalUDPKey() (key []byte) {
+	switch *s.cfg.LocalType {
+	case "tcp":
+		if *s.cfg.LocalKey != "" {
+			v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.LocalKey)))
+			return []byte(v)[:24]
+		}
+	case "tls":
+		return s.cfg.KeyBytes[:24]
+	case "kcp":
+		v := fmt.Sprintf("%x", md5.Sum([]byte(*s.cfg.KCP.Key)))
+		return []byte(v)[:24]
+	}
+	return
+}
+func (s *SPS) proxyUDP(inConn *net.Conn, serverConn *socks.ServerConn) {
+	defer func() {
+		if e := recover(); e != nil {
+			s.log.Printf("udp local->out io copy crashed:\n%s\n%s", e, string(debug.Stack()))
+		}
+	}()
+	if *s.cfg.ParentType == "ssh" {
+		utils.CloseConn(inConn)
+		return
+	}
+	srcIP, _, _ := net.SplitHostPort((*inConn).RemoteAddr().String())
+	inconnRemoteAddr := (*inConn).RemoteAddr().String()
+	localAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+	udpListener := serverConn.UDPConnListener
+	s.log.Printf("proxy udp on %s , for %s", udpListener.LocalAddr(), inconnRemoteAddr)
+	s.userConns.Set(inconnRemoteAddr, inConn)
+	var (
+		outUDPConn       *net.UDPConn
+		outconn          net.Conn
+		outconnLocalAddr string
+		isClosedErr      = func(err error) bool {
+			return err != nil && strings.Contains(err.Error(), "use of closed network connection")
+		}
+		destAddr *net.UDPAddr
+	)
+	var clean = func(msg, err string) {
+		raddr := ""
+		if outUDPConn != nil {
+			raddr = outUDPConn.RemoteAddr().String()
+			outUDPConn.Close()
+		}
+		if msg != "" {
+			if raddr != "" {
+				s.log.Printf("%s , %s , %s -> %s", msg, err, inconnRemoteAddr, raddr)
+			} else {
+				s.log.Printf("%s , %s , from : %s", msg, err, inconnRemoteAddr)
+			}
+		}
+		(*inConn).Close()
+		udpListener.Close()
+		s.userConns.Remove(inconnRemoteAddr)
+		if outconn != nil {
+			outconn.Close()
+		}
+		if outconnLocalAddr != "" {
+			s.userConns.Remove(outconnLocalAddr)
+		}
+	}
+	defer clean("", "")
+	go func() {
+		defer func() {
+			if e := recover(); e != nil {
+				s.log.Printf("udp related client tcp conn read crashed:\n%s\n%s", e, string(debug.Stack()))
+			}
+		}()
+		buf := make([]byte, 1)
+		(*inConn).SetReadDeadline(time.Time{})
+		if _, err := (*inConn).Read(buf); err != nil {
+			clean("udp related tcp conn disconnected with read", err.Error())
+		}
+	}()
+	go func() {
+		defer func() {
+			if e := recover(); e != nil {
+				s.log.Printf("udp related client tcp conn write crashed:\n%s\n%s", e, string(debug.Stack()))
+			}
+		}()
+		for {
+			(*inConn).SetWriteDeadline(time.Now().Add(time.Second * 5))
+			if _, err := (*inConn).Write([]byte{0x00}); err != nil {
+				clean("udp related tcp conn disconnected with write", err.Error())
+				return
+			}
+			(*inConn).SetWriteDeadline(time.Time{})
+			time.Sleep(time.Second * 5)
+		}
+	}()
+	//parent proxy
+	outconn, err := s.outPool.Get()
+	//outconn, err := s.GetParentConn(nil, nil, "", false)
+	if err != nil {
+		clean("connnect fail", fmt.Sprintf("%s", err))
+		return
+	}
+	if *s.cfg.ParentCompress {
+		outconn = utils.NewCompConn(outconn)
+	}
+	if *s.cfg.ParentKey != "" {
+		outconn = conncrypt.New(outconn, &conncrypt.Config{
+			Password: *s.cfg.ParentKey,
+		})
+	}
+
+	s.log.Printf("connect %s for udp", serverConn.Target())
+	//socks client
+	var client *socks.ClientConn
+	auth := serverConn.AuthData()
+	if *s.cfg.ParentAuth != "" {
+		a := strings.Split(*s.cfg.ParentAuth, ":")
+		if len(a) != 2 {
+			err = fmt.Errorf("parent auth data format error")
+			return
+		}
+		client = socks.NewClientConn(&outconn, "udp", serverConn.Target(), time.Millisecond*time.Duration(*s.cfg.Timeout), &socks.Auth{User: a[0], Password: a[1]}, nil)
+	} else {
+		if !s.IsBasicAuth() && auth.Password != "" && auth.User != "" {
+			client = socks.NewClientConn(&outconn, "udp", serverConn.Target(), time.Millisecond*time.Duration(*s.cfg.Timeout), &auth, nil)
+		} else {
+			client = socks.NewClientConn(&outconn, "udp", serverConn.Target(), time.Millisecond*time.Duration(*s.cfg.Timeout), nil, nil)
+		}
+	}
+
+	if err = client.Handshake(); err != nil {
+		clean("handshake fail", fmt.Sprintf("%s", err))
+		return
+	}
+
+	//outconnRemoteAddr := outconn.RemoteAddr().String()
+	outconnLocalAddr = outconn.LocalAddr().String()
+	s.userConns.Set(outconnLocalAddr, &outconn)
+	go func() {
+		defer func() {
+			if e := recover(); e != nil {
+				s.log.Printf("udp related parent tcp conn read crashed:\n%s\n%s", e, string(debug.Stack()))
+			}
+		}()
+		buf := make([]byte, 1)
+		outconn.SetReadDeadline(time.Time{})
+		if _, err := outconn.Read(buf); err != nil {
+			clean("udp parent tcp conn disconnected", fmt.Sprintf("%s", err))
+		}
+	}()
+	//forward to parent udp
+	//s.log.Printf("parent udp address %s", client.UDPAddr)
+	destAddr, _ = net.ResolveUDPAddr("udp", client.UDPAddr)
+	//relay
+	buf := utils.LeakyBuffer.Get()
+	defer utils.LeakyBuffer.Put(buf)
+	for {
+		n, srcAddr, err := udpListener.ReadFromUDP(buf)
+		if err != nil {
+			s.log.Printf("udp listener read fail, %s", err.Error())
+			if isClosedErr(err) {
+				return
+			}
+			continue
+		}
+		srcIP0, _, _ := net.SplitHostPort(srcAddr.String())
+		//IP not match drop it
+		if srcIP != srcIP0 {
+			continue
+		}
+		p := socks.NewPacketUDP()
+		//convert data to raw
+		if len(s.udpLocalKey) > 0 {
+			var v []byte
+			v, err = goaes.Decrypt(s.udpLocalKey, buf[:n])
+			if err == nil {
+				err = p.Parse(v)
+			}
+		} else {
+			err = p.Parse(buf[:n])
+		}
+		if err != nil {
+			s.log.Printf("udp listener parse packet fail, %s", err.Error())
+			continue
+		}
+
+		port, _ := strconv.Atoi(p.Port())
+
+		if v, ok := s.udpRelatedPacketConns.Get(srcAddr.String()); !ok {
+			if destAddr == nil {
+				destAddr = &net.UDPAddr{IP: net.ParseIP(p.Host()), Port: port}
+			}
+			outUDPConn, err = net.DialUDP("udp", localAddr, destAddr)
+			if err != nil {
+				s.log.Printf("create out udp conn fail , %s , from : %s", err, srcAddr)
+				continue
+			}
+			s.udpRelatedPacketConns.Set(srcAddr.String(), outUDPConn)
+			go func() {
+				defer func() {
+					if e := recover(); e != nil {
+						s.log.Printf("udp out->local io copy crashed:\n%s\n%s", e, string(debug.Stack()))
+					}
+				}()
+				defer s.udpRelatedPacketConns.Remove(srcAddr.String())
+				//out->local io copy
+				buf := utils.LeakyBuffer.Get()
+				defer utils.LeakyBuffer.Put(buf)
+				for {
+					outUDPConn.SetReadDeadline(time.Now().Add(time.Second * 5))
+					n, err := outUDPConn.Read(buf)
+					outUDPConn.SetReadDeadline(time.Time{})
+					if err != nil {
+						s.log.Printf("read out udp data fail , %s , from : %s", err, srcAddr)
+						if isClosedErr(err) {
+							return
+						}
+						continue
+					}
+					//var dlen = n
+					//forward to local
+					var v []byte
+					//convert parent data to raw
+					if len(s.udpParentKey) > 0 {
+						v, err = goaes.Decrypt(s.udpParentKey, buf[:n])
+						if err != nil {
+							s.log.Printf("udp outconn parse packet fail, %s", err.Error())
+							continue
+						}
+					} else {
+						v = buf[:n]
+					}
+					//now v is raw, try convert v to local
+					if len(s.udpLocalKey) > 0 {
+						v, _ = goaes.Encrypt(s.udpLocalKey, v)
+					}
+					_, err = udpListener.WriteTo(v, srcAddr)
+					// _, err = udpListener.WriteTo(buf[:n], srcAddr)
+
+					if err != nil {
+						s.udpRelatedPacketConns.Remove(srcAddr.String())
+						s.log.Printf("write out data to local fail , %s , from : %s", err, srcAddr)
+						if isClosedErr(err) {
+							return
+						}
+						continue
+					} else {
+						//s.log.Printf("send udp data to local success , len %d, for : %s", dlen, srcAddr)
+					}
+				}
+			}()
+		} else {
+			outUDPConn = v.(*net.UDPConn)
+		}
+		//local->out io copy
+		//forward to parent
+		//p is raw, now convert it to parent
+		var v []byte
+		if len(s.udpParentKey) > 0 {
+			v, _ = goaes.Encrypt(s.udpParentKey, p.Bytes())
+		} else {
+			v = p.Bytes()
+		}
+		_, err = outUDPConn.Write(v)
+		// _, err = outUDPConn.Write(p.Bytes())
+		if err != nil {
+			if isClosedErr(err) {
+				return
+			}
+			s.log.Printf("send out udp data fail , %s , from : %s", err, srcAddr)
+			continue
+		} else {
+			//s.log.Printf("send udp data to remote success , len %d, for : %s", len(p.Data()), srcAddr)
+		}
+	}
+
+}

services/sps/sps.go

@@ -0,0 +1,517 @@
+package sps
+
+import (
+	"bytes"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	logger "log"
+	"net"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+	"github.com/snail007/goproxy/utils/conncrypt"
+	"github.com/snail007/goproxy/utils/sni"
+	"github.com/snail007/goproxy/utils/socks"
+)
+
+type SPSArgs struct {
+	Parent            *string
+	CertFile          *string
+	KeyFile           *string
+	CaCertFile        *string
+	CaCertBytes       []byte
+	CertBytes         []byte
+	KeyBytes          []byte
+	Local             *string
+	ParentType        *string
+	LocalType         *string
+	Timeout           *int
+	KCP               kcpcfg.KCPConfigArgs
+	ParentServiceType *string
+	DNSAddress        *string
+	DNSTTL            *int
+	AuthFile          *string
+	Auth              *[]string
+	AuthURL           *string
+	AuthURLOkCode     *int
+	AuthURLTimeout    *int
+	AuthURLRetry      *int
+	LocalIPS          *[]string
+	ParentAuth        *string
+	LocalKey          *string
+	ParentKey         *string
+	LocalCompress     *bool
+	ParentCompress    *bool
+	DisableHTTP       *bool
+	DisableSocks5     *bool
+}
+type SPS struct {
+	outPool               utils.OutConn
+	cfg                   SPSArgs
+	domainResolver        utils.DomainResolver
+	basicAuth             utils.BasicAuth
+	serverChannels        []*utils.ServerChannel
+	userConns             utils.ConcurrentMap
+	log                   *logger.Logger
+	udpRelatedPacketConns utils.ConcurrentMap
+	udpLocalKey           []byte
+	udpParentKey          []byte
+}
+
+func NewSPS() services.Service {
+	return &SPS{
+		outPool:               utils.OutConn{},
+		cfg:                   SPSArgs{},
+		basicAuth:             utils.BasicAuth{},
+		serverChannels:        []*utils.ServerChannel{},
+		userConns:             utils.NewConcurrentMap(),
+		udpRelatedPacketConns: utils.NewConcurrentMap(),
+	}
+}
+func (s *SPS) CheckArgs() (err error) {
+	if *s.cfg.Parent == "" {
+		err = fmt.Errorf("parent required for %s %s", *s.cfg.LocalType, *s.cfg.Local)
+		return
+	}
+	if *s.cfg.ParentType == "" {
+		err = fmt.Errorf("parent type unkown,use -T <tls|tcp|kcp>")
+		return
+	}
+	if *s.cfg.ParentType == "tls" || *s.cfg.LocalType == "tls" {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+		if *s.cfg.CaCertFile != "" {
+			s.cfg.CaCertBytes, err = ioutil.ReadFile(*s.cfg.CaCertFile)
+			if err != nil {
+				err = fmt.Errorf("read ca file error,ERR:%s", err)
+				return
+			}
+		}
+	}
+	s.udpLocalKey = s.LocalUDPKey()
+	s.udpParentKey = s.ParentUDPKey()
+	return
+}
+func (s *SPS) InitService() (err error) {
+	if *s.cfg.DNSAddress != "" {
+		(*s).domainResolver = utils.NewDomainResolver(*s.cfg.DNSAddress, *s.cfg.DNSTTL, s.log)
+	}
+	s.InitOutConnPool()
+	err = s.InitBasicAuth()
+	return
+}
+func (s *SPS) InitOutConnPool() {
+	if *s.cfg.ParentType == "tls" || *s.cfg.ParentType == "tcp" || *s.cfg.ParentType == "kcp" {
+		//dur int, isTLS bool, certBytes, keyBytes []byte,
+		//parent string, timeout int, InitialCap int, MaxCap int
+		s.outPool = utils.NewOutConn(
+			0,
+			*s.cfg.ParentType,
+			s.cfg.KCP,
+			s.cfg.CertBytes, s.cfg.KeyBytes, s.cfg.CaCertBytes,
+			*s.cfg.Parent,
+			*s.cfg.Timeout,
+		)
+	}
+}
+
+func (s *SPS) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop sps service crashed,%s", e)
+		} else {
+			s.log.Printf("service sps stoped")
+		}
+	}()
+	for _, sc := range s.serverChannels {
+		if sc.Listener != nil && *sc.Listener != nil {
+			(*sc.Listener).Close()
+		}
+		if sc.UDPListener != nil {
+			(*sc.UDPListener).Close()
+		}
+	}
+	for _, c := range s.userConns.Items() {
+		if _, ok := c.(*net.Conn); ok {
+			(*c.(*net.Conn)).Close()
+		}
+		if _, ok := c.(**net.Conn); ok {
+			(*(*c.(**net.Conn))).Close()
+		}
+	}
+}
+func (s *SPS) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(SPSArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	s.log.Printf("use %s %s parent %s", *s.cfg.ParentType, *s.cfg.ParentServiceType, *s.cfg.Parent)
+	for _, addr := range strings.Split(*s.cfg.Local, ",") {
+		if addr != "" {
+			host, port, _ := net.SplitHostPort(addr)
+			p, _ := strconv.Atoi(port)
+			sc := utils.NewServerChannel(host, p, s.log)
+			if *s.cfg.LocalType == "tcp" {
+				err = sc.ListenTCP(s.callback)
+			} else if *s.cfg.LocalType == "tls" {
+				err = sc.ListenTls(s.cfg.CertBytes, s.cfg.KeyBytes, s.cfg.CaCertBytes, s.callback)
+			} else if *s.cfg.LocalType == "kcp" {
+				err = sc.ListenKCP(s.cfg.KCP, s.callback, s.log)
+			}
+			if err != nil {
+				return
+			}
+			s.log.Printf("%s http(s)+socks proxy on %s", *s.cfg.LocalType, (*sc.Listener).Addr())
+			s.serverChannels = append(s.serverChannels, &sc)
+		}
+	}
+	return
+}
+
+func (s *SPS) Clean() {
+	s.StopService()
+}
+func (s *SPS) callback(inConn net.Conn) {
+	defer func() {
+		if err := recover(); err != nil {
+			s.log.Printf("%s conn handler crashed with err : %s \nstack: %s", *s.cfg.LocalType, err, string(debug.Stack()))
+		}
+	}()
+	if *s.cfg.LocalCompress {
+		inConn = utils.NewCompConn(inConn)
+	}
+	if *s.cfg.LocalKey != "" {
+		inConn = conncrypt.New(inConn, &conncrypt.Config{
+			Password: *s.cfg.LocalKey,
+		})
+	}
+	var err error
+	switch *s.cfg.ParentType {
+	case "kcp":
+		fallthrough
+	case "tcp":
+		fallthrough
+	case "tls":
+		err = s.OutToTCP(&inConn)
+	default:
+		err = fmt.Errorf("unkown parent type %s", *s.cfg.ParentType)
+	}
+	if err != nil {
+		s.log.Printf("connect to %s parent %s fail, ERR:%s from %s", *s.cfg.ParentType, *s.cfg.Parent, err, inConn.RemoteAddr())
+		utils.CloseConn(&inConn)
+	}
+}
+func (s *SPS) OutToTCP(inConn *net.Conn) (err error) {
+	enableUDP := *s.cfg.ParentServiceType == "socks"
+	udpIP, _, _ := net.SplitHostPort((*inConn).LocalAddr().String())
+	if len(*s.cfg.LocalIPS) > 0 {
+		udpIP = (*s.cfg.LocalIPS)[0]
+	}
+	bInConn := utils.NewBufferedConn(*inConn)
+	//important
+	//action read will regist read event to system,
+	//when data arrived , system call process
+	//so that we can get buffered bytes count
+	//otherwise Buffered() always return 0
+	bInConn.ReadByte()
+	bInConn.UnreadByte()
+
+	n := 2048
+	if n > bInConn.Buffered() {
+		n = bInConn.Buffered()
+	}
+	h, err := bInConn.Peek(n)
+	if err != nil {
+		s.log.Printf("peek error %s ", err)
+		(*inConn).Close()
+		return
+	}
+	isSNI, _ := sni.ServerNameFromBytes(h)
+	*inConn = bInConn
+	address := ""
+	var auth socks.Auth
+	var forwardBytes []byte
+	//fmt.Printf("%v", h)
+	if utils.IsSocks5(h) {
+		if *s.cfg.DisableSocks5 {
+			(*inConn).Close()
+			return
+		}
+		//socks5 server
+		var serverConn *socks.ServerConn
+		if s.IsBasicAuth() {
+			serverConn = socks.NewServerConn(inConn, time.Millisecond*time.Duration(*s.cfg.Timeout), &s.basicAuth, enableUDP, udpIP, nil)
+		} else {
+			serverConn = socks.NewServerConn(inConn, time.Millisecond*time.Duration(*s.cfg.Timeout), nil, enableUDP, udpIP, nil)
+		}
+		if err = serverConn.Handshake(); err != nil {
+			return
+		}
+		address = serverConn.Target()
+		auth = serverConn.AuthData()
+		if serverConn.IsUDP() {
+			s.proxyUDP(inConn, serverConn)
+			return
+		}
+	} else if utils.IsHTTP(h) || isSNI != "" {
+		if *s.cfg.DisableHTTP {
+			(*inConn).Close()
+			return
+		}
+		//http
+		var request utils.HTTPRequest
+		(*inConn).SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		if s.IsBasicAuth() {
+			request, err = utils.NewHTTPRequest(inConn, 1024, true, &s.basicAuth, s.log)
+		} else {
+			request, err = utils.NewHTTPRequest(inConn, 1024, false, nil, s.log)
+		}
+		(*inConn).SetDeadline(time.Time{})
+		if err != nil {
+			s.log.Printf("new http request fail,ERR: %s", err)
+			utils.CloseConn(inConn)
+			return
+		}
+		if len(h) >= 7 && strings.ToLower(string(h[:7])) == "connect" {
+			//https
+			request.HTTPSReply()
+			//s.log.Printf("https reply: %s", request.Host)
+		} else {
+			//forwardBytes = bytes.TrimRight(request.HeadBuf,"\r\n")
+			forwardBytes = request.HeadBuf
+		}
+		address = request.Host
+		var userpass string
+		if s.IsBasicAuth() {
+			userpass, err = request.GetAuthDataStr()
+			if err != nil {
+				return
+			}
+			userpassA := strings.Split(userpass, ":")
+			if len(userpassA) == 2 {
+				auth = socks.Auth{User: userpassA[0], Password: userpassA[1]}
+			}
+		}
+	}
+	if err != nil || address == "" {
+		s.log.Printf("unknown request from: %s,%s", (*inConn).RemoteAddr(), string(h))
+		(*inConn).Close()
+		utils.CloseConn(inConn)
+		err = errors.New("unknown request")
+		return
+	}
+	//connect to parent
+	var outConn net.Conn
+	outConn, err = s.outPool.Get()
+	if err != nil {
+		s.log.Printf("connect to %s , err:%s", *s.cfg.Parent, err)
+		utils.CloseConn(inConn)
+		return
+	}
+	if *s.cfg.ParentCompress {
+		outConn = utils.NewCompConn(outConn)
+	}
+	if *s.cfg.ParentKey != "" {
+		outConn = conncrypt.New(outConn, &conncrypt.Config{
+			Password: *s.cfg.ParentKey,
+		})
+	}
+
+	if *s.cfg.ParentAuth != "" || s.IsBasicAuth() {
+		forwardBytes = utils.RemoveProxyHeaders(forwardBytes)
+	}
+
+	//ask parent for connect to target address
+	if *s.cfg.ParentServiceType == "http" {
+		//http parent
+		isHTTPS := false
+
+		pb := new(bytes.Buffer)
+		if len(forwardBytes) == 0 {
+			isHTTPS = true
+			pb.Write([]byte(fmt.Sprintf("CONNECT %s HTTP/1.1\r\n", address)))
+		}
+		pb.WriteString("Proxy-Connection: Keep-Alive\r\n")
+
+		u := ""
+		if *s.cfg.ParentAuth != "" {
+			a := strings.Split(*s.cfg.ParentAuth, ":")
+			if len(a) != 2 {
+				err = fmt.Errorf("parent auth data format error")
+				return
+			}
+			u = fmt.Sprintf("%s:%s", a[0], a[1])
+		} else {
+			if !s.IsBasicAuth() && auth.Password != "" && auth.User != "" {
+				u = fmt.Sprintf("%s:%s", auth.User, auth.Password)
+			}
+		}
+		if u != "" {
+			pb.Write([]byte(fmt.Sprintf("Proxy-Authorization: Basic %s\r\n", base64.StdEncoding.EncodeToString([]byte(u)))))
+		}
+
+		if isHTTPS {
+			pb.Write([]byte("\r\n"))
+		} else {
+			forwardBytes = utils.InsertProxyHeaders(forwardBytes, string(pb.Bytes()))
+			pb.Reset()
+			pb.Write(forwardBytes)
+			forwardBytes = nil
+		}
+
+		outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		_, err = outConn.Write(pb.Bytes())
+		outConn.SetDeadline(time.Time{})
+		if err != nil {
+			s.log.Printf("write CONNECT to %s , err:%s", *s.cfg.Parent, err)
+			utils.CloseConn(inConn)
+			utils.CloseConn(&outConn)
+			return
+		}
+
+		if isHTTPS {
+			reply := make([]byte, 1024)
+			outConn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+			_, err = outConn.Read(reply)
+			outConn.SetDeadline(time.Time{})
+			if err != nil {
+				s.log.Printf("read reply from %s , err:%s", *s.cfg.Parent, err)
+				utils.CloseConn(inConn)
+				utils.CloseConn(&outConn)
+				return
+			}
+			//s.log.Printf("reply: %s", string(reply[:n]))
+		}
+	} else if *s.cfg.ParentServiceType == "socks" {
+		s.log.Printf("connect %s", address)
+		//socks client
+		var clientConn *socks.ClientConn
+		if *s.cfg.ParentAuth != "" {
+			a := strings.Split(*s.cfg.ParentAuth, ":")
+			if len(a) != 2 {
+				err = fmt.Errorf("parent auth data format error")
+				return
+			}
+			clientConn = socks.NewClientConn(&outConn, "tcp", address, time.Millisecond*time.Duration(*s.cfg.Timeout), &socks.Auth{User: a[0], Password: a[1]}, nil)
+		} else {
+			if !s.IsBasicAuth() && auth.Password != "" && auth.User != "" {
+				clientConn = socks.NewClientConn(&outConn, "tcp", address, time.Millisecond*time.Duration(*s.cfg.Timeout), &auth, nil)
+			} else {
+				clientConn = socks.NewClientConn(&outConn, "tcp", address, time.Millisecond*time.Duration(*s.cfg.Timeout), nil, nil)
+			}
+		}
+		if err = clientConn.Handshake(); err != nil {
+			return
+		}
+	}
+
+	//forward client data to target,if necessary.
+	if len(forwardBytes) > 0 {
+		outConn.Write(forwardBytes)
+	}
+
+	//bind
+	inAddr := (*inConn).RemoteAddr().String()
+	outAddr := outConn.RemoteAddr().String()
+	utils.IoBind((*inConn), outConn, func(err interface{}) {
+		s.log.Printf("conn %s - %s released [%s]", inAddr, outAddr, address)
+		s.userConns.Remove(inAddr)
+	}, s.log)
+	s.log.Printf("conn %s - %s connected [%s]", inAddr, outAddr, address)
+	if c, ok := s.userConns.Get(inAddr); ok {
+		(*c.(*net.Conn)).Close()
+	}
+	s.userConns.Set(inAddr, inConn)
+	return
+}
+func (s *SPS) InitBasicAuth() (err error) {
+	if *s.cfg.DNSAddress != "" {
+		s.basicAuth = utils.NewBasicAuth(&(*s).domainResolver, s.log)
+	} else {
+		s.basicAuth = utils.NewBasicAuth(nil, s.log)
+	}
+	if *s.cfg.AuthURL != "" {
+		s.basicAuth.SetAuthURL(*s.cfg.AuthURL, *s.cfg.AuthURLOkCode, *s.cfg.AuthURLTimeout, *s.cfg.AuthURLRetry)
+		s.log.Printf("auth from %s", *s.cfg.AuthURL)
+	}
+	if *s.cfg.AuthFile != "" {
+		var n = 0
+		n, err = s.basicAuth.AddFromFile(*s.cfg.AuthFile)
+		if err != nil {
+			err = fmt.Errorf("auth-file ERR:%s", err)
+			return
+		}
+		s.log.Printf("auth data added from file %d , total:%d", n, s.basicAuth.Total())
+	}
+	if len(*s.cfg.Auth) > 0 {
+		n := s.basicAuth.Add(*s.cfg.Auth)
+		s.log.Printf("auth data added %d, total:%d", n, s.basicAuth.Total())
+	}
+	return
+}
+func (s *SPS) IsBasicAuth() bool {
+	return *s.cfg.AuthFile != "" || len(*s.cfg.Auth) > 0 || *s.cfg.AuthURL != ""
+}
+func (s *SPS) buildRequest(address string) (buf []byte, err error) {
+	host, portStr, err := net.SplitHostPort(address)
+	if err != nil {
+		return nil, err
+	}
+
+	port, err := strconv.Atoi(portStr)
+	if err != nil {
+		err = errors.New("proxy: failed to parse port number: " + portStr)
+		return
+	}
+	if port < 1 || port > 0xffff {
+		err = errors.New("proxy: port number out of range: " + portStr)
+		return
+	}
+	buf = buf[:0]
+	buf = append(buf, 0x05, 0x01, 0 /* reserved */)
+
+	if ip := net.ParseIP(host); ip != nil {
+		if ip4 := ip.To4(); ip4 != nil {
+			buf = append(buf, 0x01)
+			ip = ip4
+		} else {
+			buf = append(buf, 0x04)
+		}
+		buf = append(buf, ip...)
+	} else {
+		if len(host) > 255 {
+			err = errors.New("proxy: destination host name too long: " + host)
+			return
+		}
+		buf = append(buf, 0x03)
+		buf = append(buf, byte(len(host)))
+		buf = append(buf, host...)
+	}
+	buf = append(buf, byte(port>>8), byte(port))
+	return
+}
+func (s *SPS) Resolve(address string) string {
+	if *s.cfg.DNSAddress == "" {
+		return address
+	}
+	ip, err := s.domainResolver.Resolve(address)
+	if err != nil {
+		s.log.Printf("dns error %s , ERR:%s", address, err)
+		return address
+	}
+	return ip
+}

services/tcp/tcp.go

@@ -0,0 +1,235 @@
+package tcp
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	logger "log"
+	"net"
+	"runtime/debug"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+
+	"strconv"
+)
+
+type TCPArgs struct {
+	Parent              *string
+	CertFile            *string
+	KeyFile             *string
+	CertBytes           []byte
+	KeyBytes            []byte
+	Local               *string
+	ParentType          *string
+	LocalType           *string
+	Timeout             *int
+	CheckParentInterval *int
+	KCP                 kcpcfg.KCPConfigArgs
+}
+
+type TCP struct {
+	outPool   utils.OutConn
+	cfg       TCPArgs
+	sc        *utils.ServerChannel
+	isStop    bool
+	userConns utils.ConcurrentMap
+	log       *logger.Logger
+}
+
+func NewTCP() services.Service {
+	return &TCP{
+		outPool:   utils.OutConn{},
+		cfg:       TCPArgs{},
+		isStop:    false,
+		userConns: utils.NewConcurrentMap(),
+	}
+}
+func (s *TCP) CheckArgs() (err error) {
+	if *s.cfg.Parent == "" {
+		err = fmt.Errorf("parent required for %s %s", *s.cfg.LocalType, *s.cfg.Local)
+		return
+	}
+	if *s.cfg.ParentType == "" {
+		err = fmt.Errorf("parent type unkown,use -T <tls|tcp|kcp|udp>")
+		return
+	}
+	if *s.cfg.ParentType == "tls" || *s.cfg.LocalType == "tls" {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+func (s *TCP) InitService() (err error) {
+	s.InitOutConnPool()
+	return
+}
+func (s *TCP) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop tcp service crashed,%s", e)
+		} else {
+			s.log.Printf("service tcp stoped")
+		}
+	}()
+	s.isStop = true
+	if s.sc.Listener != nil && *s.sc.Listener != nil {
+		(*s.sc.Listener).Close()
+	}
+	if s.sc.UDPListener != nil {
+		(*s.sc.UDPListener).Close()
+	}
+	for _, c := range s.userConns.Items() {
+		(*c.(*net.Conn)).Close()
+	}
+}
+func (s *TCP) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(TCPArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	s.log.Printf("use %s parent %s", *s.cfg.ParentType, *s.cfg.Parent)
+	host, port, _ := net.SplitHostPort(*s.cfg.Local)
+	p, _ := strconv.Atoi(port)
+	sc := utils.NewServerChannel(host, p, s.log)
+
+	if *s.cfg.LocalType == "tcp" {
+		err = sc.ListenTCP(s.callback)
+	} else if *s.cfg.LocalType == "tls" {
+		err = sc.ListenTls(s.cfg.CertBytes, s.cfg.KeyBytes, nil, s.callback)
+	} else if *s.cfg.LocalType == "kcp" {
+		err = sc.ListenKCP(s.cfg.KCP, s.callback, s.log)
+	}
+	if err != nil {
+		return
+	}
+	s.log.Printf("%s proxy on %s", *s.cfg.LocalType, (*sc.Listener).Addr())
+	s.sc = &sc
+	return
+}
+
+func (s *TCP) Clean() {
+	s.StopService()
+}
+func (s *TCP) callback(inConn net.Conn) {
+	defer func() {
+		if err := recover(); err != nil {
+			s.log.Printf("%s conn handler crashed with err : %s \nstack: %s", *s.cfg.LocalType, err, string(debug.Stack()))
+		}
+	}()
+	var err error
+	switch *s.cfg.ParentType {
+	case "kcp":
+		fallthrough
+	case "tcp":
+		fallthrough
+	case "tls":
+		err = s.OutToTCP(&inConn)
+	case "udp":
+		err = s.OutToUDP(&inConn)
+	default:
+		err = fmt.Errorf("unkown parent type %s", *s.cfg.ParentType)
+	}
+	if err != nil {
+		s.log.Printf("connect to %s parent %s fail, ERR:%s", *s.cfg.ParentType, *s.cfg.Parent, err)
+		utils.CloseConn(&inConn)
+	}
+}
+func (s *TCP) OutToTCP(inConn *net.Conn) (err error) {
+	var outConn net.Conn
+	outConn, err = s.outPool.Get()
+	if err != nil {
+		s.log.Printf("connect to %s , err:%s", *s.cfg.Parent, err)
+		utils.CloseConn(inConn)
+		return
+	}
+	inAddr := (*inConn).RemoteAddr().String()
+	//inLocalAddr := (*inConn).LocalAddr().String()
+	outAddr := outConn.RemoteAddr().String()
+	//outLocalAddr := outConn.LocalAddr().String()
+	utils.IoBind((*inConn), outConn, func(err interface{}) {
+		s.log.Printf("conn %s - %s released", inAddr, outAddr)
+		s.userConns.Remove(inAddr)
+	}, s.log)
+	s.log.Printf("conn %s - %s connected", inAddr, outAddr)
+	if c, ok := s.userConns.Get(inAddr); ok {
+		(*c.(*net.Conn)).Close()
+	}
+	s.userConns.Set(inAddr, inConn)
+	return
+}
+func (s *TCP) OutToUDP(inConn *net.Conn) (err error) {
+	s.log.Printf("conn created , remote : %s ", (*inConn).RemoteAddr())
+	for {
+		if s.isStop {
+			(*inConn).Close()
+			return
+		}
+		srcAddr, body, err := utils.ReadUDPPacket(bufio.NewReader(*inConn))
+		if err == io.EOF || err == io.ErrUnexpectedEOF {
+			//s.log.Printf("connection %s released", srcAddr)
+			utils.CloseConn(inConn)
+			break
+		}
+		//log.Debugf("udp packet revecived:%s,%v", srcAddr, body)
+		dstAddr, err := net.ResolveUDPAddr("udp", *s.cfg.Parent)
+		if err != nil {
+			s.log.Printf("can't resolve address: %s", err)
+			utils.CloseConn(inConn)
+			break
+		}
+		clientSrcAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+		conn, err := net.DialUDP("udp", clientSrcAddr, dstAddr)
+		if err != nil {
+			s.log.Printf("connect to udp %s fail,ERR:%s", dstAddr.String(), err)
+			continue
+		}
+		conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+		_, err = conn.Write(body)
+		if err != nil {
+			s.log.Printf("send udp packet to %s fail,ERR:%s", dstAddr.String(), err)
+			continue
+		}
+		//log.Debugf("send udp packet to %s success", dstAddr.String())
+		buf := make([]byte, 512)
+		len, _, err := conn.ReadFromUDP(buf)
+		if err != nil {
+			s.log.Printf("read udp response from %s fail ,ERR:%s", dstAddr.String(), err)
+			continue
+		}
+		respBody := buf[0:len]
+		//log.Debugf("revecived udp packet from %s , %v", dstAddr.String(), respBody)
+		_, err = (*inConn).Write(utils.UDPPacket(srcAddr, respBody))
+		if err != nil {
+			s.log.Printf("send udp response fail ,ERR:%s", err)
+			utils.CloseConn(inConn)
+			break
+		}
+		//s.log.Printf("send udp response success ,from:%s", dstAddr.String())
+	}
+	return
+
+}
+func (s *TCP) InitOutConnPool() {
+	if *s.cfg.ParentType == "tls" || *s.cfg.ParentType == "tcp" || *s.cfg.ParentType == "kcp" {
+		//dur int, isTLS bool, certBytes, keyBytes []byte,
+		//parent string, timeout int, InitialCap int, MaxCap int
+		s.outPool = utils.NewOutConn(
+			*s.cfg.CheckParentInterval,
+			*s.cfg.ParentType,
+			s.cfg.KCP,
+			s.cfg.CertBytes, s.cfg.KeyBytes, nil,
+			*s.cfg.Parent,
+			*s.cfg.Timeout,
+		)
+	}
+}

services/tunnel/tunnel_bridge.go

@@ -0,0 +1,216 @@
+package tunnel
+
+import (
+	"bytes"
+	"fmt"
+	logger "log"
+	"net"
+	"os"
+	"strconv"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/utils"
+
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
+)
+
+const (
+	CONN_CLIENT_CONTROL = uint8(1)
+	CONN_SERVER         = uint8(4)
+	CONN_CLIENT         = uint8(5)
+)
+
+type TunnelBridgeArgs struct {
+	Parent    *string
+	CertFile  *string
+	KeyFile   *string
+	CertBytes []byte
+	KeyBytes  []byte
+	Local     *string
+	Timeout   *int
+	Mux       *bool
+}
+type ServerConn struct {
+	//ClientLocalAddr string //tcp:2.2.22:333@ID
+	Conn *net.Conn
+}
+type TunnelBridge struct {
+	cfg                TunnelBridgeArgs
+	serverConns        utils.ConcurrentMap
+	clientControlConns utils.ConcurrentMap
+	isStop             bool
+	log                *logger.Logger
+}
+
+func NewTunnelBridge() services.Service {
+	return &TunnelBridge{
+		cfg:                TunnelBridgeArgs{},
+		serverConns:        utils.NewConcurrentMap(),
+		clientControlConns: utils.NewConcurrentMap(),
+		isStop:             false,
+	}
+}
+
+func (s *TunnelBridge) InitService() (err error) {
+	return
+}
+func (s *TunnelBridge) CheckArgs() (err error) {
+	if *s.cfg.CertFile == "" || *s.cfg.KeyFile == "" {
+		err = fmt.Errorf("cert and key file required")
+		return
+	}
+	s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+	return
+}
+func (s *TunnelBridge) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop tbridge service crashed,%s", e)
+		} else {
+			s.log.Printf("service tbridge stoped")
+		}
+	}()
+	s.isStop = true
+	for _, sess := range s.clientControlConns.Items() {
+		(*sess.(*net.Conn)).Close()
+	}
+	for _, sess := range s.serverConns.Items() {
+		(*sess.(ServerConn).Conn).Close()
+	}
+}
+func (s *TunnelBridge) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(TunnelBridgeArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	host, port, _ := net.SplitHostPort(*s.cfg.Local)
+	p, _ := strconv.Atoi(port)
+	sc := utils.NewServerChannel(host, p, s.log)
+
+	err = sc.ListenTls(s.cfg.CertBytes, s.cfg.KeyBytes, nil, s.callback)
+	if err != nil {
+		return
+	}
+	s.log.Printf("proxy on tunnel bridge mode %s", (*sc.Listener).Addr())
+	return
+}
+func (s *TunnelBridge) Clean() {
+	s.StopService()
+}
+func (s *TunnelBridge) callback(inConn net.Conn) {
+	var err error
+	//s.log.Printf("connection from %s ", inConn.RemoteAddr())
+	sess, err := smux.Server(inConn, &smux.Config{
+		AcceptBacklog:          256,
+		EnableKeepAlive:        true,
+		KeepAliveInterval:      9 * time.Second,
+		ConnectionWriteTimeout: 3 * time.Second,
+		MaxStreamWindowSize:    512 * 1024,
+		LogOutput:              os.Stderr,
+	})
+	if err != nil {
+		s.log.Printf("new mux server conn error,ERR:%s", err)
+		return
+	}
+	inConn, err = sess.AcceptStream()
+	if err != nil {
+		s.log.Printf("mux server conn accept error,ERR:%s", err)
+		return
+	}
+
+	var buf = make([]byte, 1024)
+	n, _ := inConn.Read(buf)
+	reader := bytes.NewReader(buf[:n])
+	//reader := bufio.NewReader(inConn)
+
+	var connType uint8
+	err = utils.ReadPacket(reader, &connType)
+	if err != nil {
+		s.log.Printf("read error,ERR:%s", err)
+		return
+	}
+	switch connType {
+	case CONN_SERVER:
+		var key, ID, clientLocalAddr, serverID string
+		err = utils.ReadPacketData(reader, &key, &ID, &clientLocalAddr, &serverID)
+		if err != nil {
+			s.log.Printf("read error,ERR:%s", err)
+			return
+		}
+		packet := utils.BuildPacketData(ID, clientLocalAddr, serverID)
+		s.log.Printf("server connection, key: %s , id: %s %s %s", key, ID, clientLocalAddr, serverID)
+
+		//addr := clientLocalAddr + "@" + ID
+		s.serverConns.Set(ID, ServerConn{
+			Conn: &inConn,
+		})
+		for {
+			if s.isStop {
+				return
+			}
+			item, ok := s.clientControlConns.Get(key)
+			if !ok {
+				s.log.Printf("client %s control conn not exists", key)
+				time.Sleep(time.Second * 3)
+				continue
+			}
+			(*item.(*net.Conn)).SetWriteDeadline(time.Now().Add(time.Second * 3))
+			_, err := (*item.(*net.Conn)).Write(packet)
+			(*item.(*net.Conn)).SetWriteDeadline(time.Time{})
+			if err != nil {
+				s.log.Printf("%s client control conn write signal fail, err: %s, retrying...", key, err)
+				time.Sleep(time.Second * 3)
+				continue
+			} else {
+				// s.cmServer.Add(serverID, ID, &inConn)
+				break
+			}
+		}
+	case CONN_CLIENT:
+		var key, ID, serverID string
+		err = utils.ReadPacketData(reader, &key, &ID, &serverID)
+		if err != nil {
+			s.log.Printf("read error,ERR:%s", err)
+			return
+		}
+		s.log.Printf("client connection , key: %s , id: %s, server id:%s", key, ID, serverID)
+
+		serverConnItem, ok := s.serverConns.Get(ID)
+		if !ok {
+			inConn.Close()
+			s.log.Printf("server conn %s exists", ID)
+			return
+		}
+		serverConn := serverConnItem.(ServerConn).Conn
+		utils.IoBind(*serverConn, inConn, func(err interface{}) {
+			s.serverConns.Remove(ID)
+			// s.cmClient.RemoveOne(key, ID)
+			// s.cmServer.RemoveOne(serverID, ID)
+			s.log.Printf("conn %s released", ID)
+		}, s.log)
+		// s.cmClient.Add(key, ID, &inConn)
+		s.log.Printf("conn %s created", ID)
+
+	case CONN_CLIENT_CONTROL:
+		var key string
+		err = utils.ReadPacketData(reader, &key)
+		if err != nil {
+			s.log.Printf("read error,ERR:%s", err)
+			return
+		}
+		s.log.Printf("client control connection, key: %s", key)
+		if s.clientControlConns.Has(key) {
+			item, _ := s.clientControlConns.Get(key)
+			(*item.(*net.Conn)).Close()
+		}
+		s.clientControlConns.Set(key, &inConn)
+		s.log.Printf("set client %s control conn", key)
+	}
+}

services/tunnel/tunnel_client.go

@@ -0,0 +1,312 @@
+package tunnel
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	logger "log"
+	"net"
+	"os"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/utils"
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
+)
+
+const (
+	CONN_SERVER_MUX = uint8(6)
+	CONN_CLIENT_MUX = uint8(7)
+)
+
+type TunnelClientArgs struct {
+	Parent    *string
+	CertFile  *string
+	KeyFile   *string
+	CertBytes []byte
+	KeyBytes  []byte
+	Key       *string
+	Timeout   *int
+	Mux       *bool
+}
+type TunnelClient struct {
+	cfg       TunnelClientArgs
+	ctrlConn  net.Conn
+	isStop    bool
+	userConns utils.ConcurrentMap
+	log       *logger.Logger
+}
+
+func NewTunnelClient() services.Service {
+	return &TunnelClient{
+		cfg:       TunnelClientArgs{},
+		userConns: utils.NewConcurrentMap(),
+		isStop:    false,
+	}
+}
+
+func (s *TunnelClient) InitService() (err error) {
+	return
+}
+
+func (s *TunnelClient) CheckArgs() (err error) {
+	if *s.cfg.Parent != "" {
+		s.log.Printf("use tls parent %s", *s.cfg.Parent)
+	} else {
+		err = fmt.Errorf("parent required")
+		return
+	}
+	if *s.cfg.CertFile == "" || *s.cfg.KeyFile == "" {
+		err = fmt.Errorf("cert and key file required")
+		return
+	}
+	s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+	return
+}
+func (s *TunnelClient) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop tclient service crashed,%s", e)
+		} else {
+			s.log.Printf("service tclient stoped")
+		}
+	}()
+	s.isStop = true
+	if s.ctrlConn != nil {
+		s.ctrlConn.Close()
+	}
+	for _, c := range s.userConns.Items() {
+		(*c.(*net.Conn)).Close()
+	}
+}
+func (s *TunnelClient) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(TunnelClientArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	s.log.Printf("proxy on tunnel client mode")
+
+	for {
+		if s.isStop {
+			return
+		}
+		if s.ctrlConn != nil {
+			s.ctrlConn.Close()
+		}
+
+		s.ctrlConn, err = s.GetInConn(CONN_CLIENT_CONTROL, *s.cfg.Key)
+		if err != nil {
+			s.log.Printf("control connection err: %s, retrying...", err)
+			time.Sleep(time.Second * 3)
+			if s.ctrlConn != nil {
+				s.ctrlConn.Close()
+			}
+			continue
+		}
+		for {
+			if s.isStop {
+				return
+			}
+			var ID, clientLocalAddr, serverID string
+			err = utils.ReadPacketData(s.ctrlConn, &ID, &clientLocalAddr, &serverID)
+			if err != nil {
+				if s.ctrlConn != nil {
+					s.ctrlConn.Close()
+				}
+				s.log.Printf("read connection signal err: %s, retrying...", err)
+				break
+			}
+			s.log.Printf("signal revecived:%s %s %s", serverID, ID, clientLocalAddr)
+			protocol := clientLocalAddr[:3]
+			localAddr := clientLocalAddr[4:]
+			if protocol == "udp" {
+				go s.ServeUDP(localAddr, ID, serverID)
+			} else {
+				go s.ServeConn(localAddr, ID, serverID)
+			}
+		}
+	}
+}
+func (s *TunnelClient) Clean() {
+	s.StopService()
+}
+func (s *TunnelClient) GetInConn(typ uint8, data ...string) (outConn net.Conn, err error) {
+	outConn, err = s.GetConn()
+	if err != nil {
+		err = fmt.Errorf("connection err: %s", err)
+		return
+	}
+	_, err = outConn.Write(utils.BuildPacket(typ, data...))
+	if err != nil {
+		err = fmt.Errorf("write connection data err: %s ,retrying...", err)
+		utils.CloseConn(&outConn)
+		return
+	}
+	return
+}
+func (s *TunnelClient) GetConn() (conn net.Conn, err error) {
+	var _conn tls.Conn
+	_conn, err = utils.TlsConnectHost(*s.cfg.Parent, *s.cfg.Timeout, s.cfg.CertBytes, s.cfg.KeyBytes, nil)
+	if err == nil {
+		conn = net.Conn(&_conn)
+		c, e := smux.Client(conn, &smux.Config{
+			AcceptBacklog:          256,
+			EnableKeepAlive:        true,
+			KeepAliveInterval:      9 * time.Second,
+			ConnectionWriteTimeout: 3 * time.Second,
+			MaxStreamWindowSize:    512 * 1024,
+			LogOutput:              os.Stderr,
+		})
+		if e != nil {
+			s.log.Printf("new mux client conn error,ERR:%s", e)
+			err = e
+			return
+		}
+		conn, e = c.OpenStream()
+		if e != nil {
+			s.log.Printf("mux client conn open stream error,ERR:%s", e)
+			err = e
+			return
+		}
+	}
+	return
+}
+func (s *TunnelClient) ServeUDP(localAddr, ID, serverID string) {
+	var inConn net.Conn
+	var err error
+	// for {
+	for {
+		if s.isStop {
+			if inConn != nil {
+				inConn.Close()
+			}
+			return
+		}
+		// s.cm.RemoveOne(*s.cfg.Key, ID)
+		inConn, err = s.GetInConn(CONN_CLIENT, *s.cfg.Key, ID, serverID)
+		if err != nil {
+			utils.CloseConn(&inConn)
+			s.log.Printf("connection err: %s, retrying...", err)
+			time.Sleep(time.Second * 3)
+			continue
+		} else {
+			break
+		}
+	}
+	// s.cm.Add(*s.cfg.Key, ID, &inConn)
+	s.log.Printf("conn %s created", ID)
+
+	for {
+		if s.isStop {
+			return
+		}
+		srcAddr, body, err := utils.ReadUDPPacket(inConn)
+		if err == io.EOF || err == io.ErrUnexpectedEOF {
+			s.log.Printf("connection %s released", ID)
+			utils.CloseConn(&inConn)
+			break
+		} else if err != nil {
+			s.log.Printf("udp packet revecived fail, err: %s", err)
+		} else {
+			//s.log.Printf("udp packet revecived:%s,%v", srcAddr, body)
+			go s.processUDPPacket(&inConn, srcAddr, localAddr, body)
+		}
+
+	}
+	// }
+}
+func (s *TunnelClient) processUDPPacket(inConn *net.Conn, srcAddr, localAddr string, body []byte) {
+	dstAddr, err := net.ResolveUDPAddr("udp", localAddr)
+	if err != nil {
+		s.log.Printf("can't resolve address: %s", err)
+		utils.CloseConn(inConn)
+		return
+	}
+	clientSrcAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+	conn, err := net.DialUDP("udp", clientSrcAddr, dstAddr)
+	if err != nil {
+		s.log.Printf("connect to udp %s fail,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+	_, err = conn.Write(body)
+	if err != nil {
+		s.log.Printf("send udp packet to %s fail,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	//s.log.Printf("send udp packet to %s success", dstAddr.String())
+	buf := make([]byte, 1024)
+	length, _, err := conn.ReadFromUDP(buf)
+	if err != nil {
+		s.log.Printf("read udp response from %s fail ,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	respBody := buf[0:length]
+	//s.log.Printf("revecived udp packet from %s , %v", dstAddr.String(), respBody)
+	bs := utils.UDPPacket(srcAddr, respBody)
+	_, err = (*inConn).Write(bs)
+	if err != nil {
+		s.log.Printf("send udp response fail ,ERR:%s", err)
+		utils.CloseConn(inConn)
+		return
+	}
+	//s.log.Printf("send udp response success ,from:%s ,%d ,%v", dstAddr.String(), len(bs), bs)
+}
+func (s *TunnelClient) ServeConn(localAddr, ID, serverID string) {
+	var inConn, outConn net.Conn
+	var err error
+	for {
+		if s.isStop {
+			return
+		}
+		inConn, err = s.GetInConn(CONN_CLIENT, *s.cfg.Key, ID, serverID)
+		if err != nil {
+			utils.CloseConn(&inConn)
+			s.log.Printf("connection err: %s, retrying...", err)
+			time.Sleep(time.Second * 3)
+			continue
+		} else {
+			break
+		}
+	}
+
+	i := 0
+	for {
+		if s.isStop {
+			return
+		}
+		i++
+		outConn, err = utils.ConnectHost(localAddr, *s.cfg.Timeout)
+		if err == nil || i == 3 {
+			break
+		} else {
+			if i == 3 {
+				s.log.Printf("connect to %s err: %s, retrying...", localAddr, err)
+				time.Sleep(2 * time.Second)
+				continue
+			}
+		}
+	}
+	if err != nil {
+		utils.CloseConn(&inConn)
+		utils.CloseConn(&outConn)
+		s.log.Printf("build connection error, err: %s", err)
+		return
+	}
+	inAddr := inConn.RemoteAddr().String()
+	utils.IoBind(inConn, outConn, func(err interface{}) {
+		s.log.Printf("conn %s released", ID)
+		s.userConns.Remove(inAddr)
+	}, s.log)
+	if c, ok := s.userConns.Get(inAddr); ok {
+		(*c.(*net.Conn)).Close()
+	}
+	s.userConns.Set(inAddr, &inConn)
+	s.log.Printf("conn %s created", ID)
+}

services/tunnel/tunnel_server.go

@@ -0,0 +1,415 @@
+package tunnel
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	logger "log"
+	"net"
+	"os"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/utils"
+
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
+)
+
+type TunnelServerArgs struct {
+	Parent    *string
+	CertFile  *string
+	KeyFile   *string
+	CertBytes []byte
+	KeyBytes  []byte
+	Local     *string
+	IsUDP     *bool
+	Key       *string
+	Remote    *string
+	Timeout   *int
+	Route     *[]string
+	Mgr       *TunnelServerManager
+	Mux       *bool
+}
+type UDPItem struct {
+	packet    *[]byte
+	localAddr *net.UDPAddr
+	srcAddr   *net.UDPAddr
+}
+type TunnelServerManager struct {
+	cfg      TunnelServerArgs
+	udpChn   chan UDPItem
+	serverID string
+	servers  []*services.Service
+	log      *logger.Logger
+}
+
+func NewTunnelServerManager() services.Service {
+	return &TunnelServerManager{
+		cfg:      TunnelServerArgs{},
+		udpChn:   make(chan UDPItem, 50000),
+		serverID: utils.Uniqueid(),
+		servers:  []*services.Service{},
+	}
+}
+func (s *TunnelServerManager) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(TunnelServerArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if *s.cfg.Parent != "" {
+		s.log.Printf("use tls parent %s", *s.cfg.Parent)
+	} else {
+		err = fmt.Errorf("parent required")
+		return
+	}
+
+	if err = s.InitService(); err != nil {
+		return
+	}
+
+	s.log.Printf("server id: %s", s.serverID)
+	//s.log.Printf("route:%v", *s.cfg.Route)
+	for _, _info := range *s.cfg.Route {
+		IsUDP := *s.cfg.IsUDP
+		if strings.HasPrefix(_info, "udp://") {
+			IsUDP = true
+		}
+		info := strings.TrimPrefix(_info, "udp://")
+		info = strings.TrimPrefix(info, "tcp://")
+		_routeInfo := strings.Split(info, "@")
+		server := NewTunnelServer()
+		local := _routeInfo[0]
+		remote := _routeInfo[1]
+		KEY := *s.cfg.Key
+		if strings.HasPrefix(remote, "[") {
+			KEY = remote[1:strings.LastIndex(remote, "]")]
+			remote = remote[strings.LastIndex(remote, "]")+1:]
+		}
+		if strings.HasPrefix(remote, ":") {
+			remote = fmt.Sprintf("127.0.0.1%s", remote)
+		}
+		err = server.Start(TunnelServerArgs{
+			CertBytes: s.cfg.CertBytes,
+			KeyBytes:  s.cfg.KeyBytes,
+			Parent:    s.cfg.Parent,
+			CertFile:  s.cfg.CertFile,
+			KeyFile:   s.cfg.KeyFile,
+			Local:     &local,
+			IsUDP:     &IsUDP,
+			Remote:    &remote,
+			Key:       &KEY,
+			Timeout:   s.cfg.Timeout,
+			Mgr:       s,
+		}, log)
+
+		if err != nil {
+			return
+		}
+		s.servers = append(s.servers, &server)
+	}
+	return
+}
+func (s *TunnelServerManager) Clean() {
+	s.StopService()
+}
+func (s *TunnelServerManager) StopService() {
+	for _, server := range s.servers {
+		(*server).Clean()
+	}
+}
+func (s *TunnelServerManager) CheckArgs() (err error) {
+	if *s.cfg.CertFile == "" || *s.cfg.KeyFile == "" {
+		err = fmt.Errorf("cert and key file required")
+		return
+	}
+	s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+	return
+}
+func (s *TunnelServerManager) InitService() (err error) {
+	return
+}
+
+func (s *TunnelServerManager) GetOutConn(typ uint8) (outConn net.Conn, ID string, err error) {
+	outConn, err = s.GetConn()
+	if err != nil {
+		s.log.Printf("connection err: %s", err)
+		return
+	}
+	ID = s.serverID
+	_, err = outConn.Write(utils.BuildPacket(typ, s.serverID))
+	if err != nil {
+		s.log.Printf("write connection data err: %s ,retrying...", err)
+		utils.CloseConn(&outConn)
+		return
+	}
+	return
+}
+func (s *TunnelServerManager) GetConn() (conn net.Conn, err error) {
+	var _conn tls.Conn
+	_conn, err = utils.TlsConnectHost(*s.cfg.Parent, *s.cfg.Timeout, s.cfg.CertBytes, s.cfg.KeyBytes, nil)
+	if err == nil {
+		conn = net.Conn(&_conn)
+	}
+	return
+}
+
+type TunnelServer struct {
+	cfg       TunnelServerArgs
+	udpChn    chan UDPItem
+	sc        utils.ServerChannel
+	isStop    bool
+	udpConn   *net.Conn
+	userConns utils.ConcurrentMap
+	log       *logger.Logger
+}
+
+func NewTunnelServer() services.Service {
+	return &TunnelServer{
+		cfg:       TunnelServerArgs{},
+		udpChn:    make(chan UDPItem, 50000),
+		isStop:    false,
+		userConns: utils.NewConcurrentMap(),
+	}
+}
+
+func (s *TunnelServer) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop server service crashed,%s", e)
+		} else {
+			s.log.Printf("service server stoped")
+		}
+	}()
+	s.isStop = true
+
+	if s.sc.Listener != nil {
+		(*s.sc.Listener).Close()
+	}
+	if s.sc.UDPListener != nil {
+		(*s.sc.UDPListener).Close()
+	}
+	if s.udpConn != nil {
+		(*s.udpConn).Close()
+	}
+	for _, c := range s.userConns.Items() {
+		(*c.(*net.Conn)).Close()
+	}
+}
+func (s *TunnelServer) InitService() (err error) {
+	s.UDPConnDeamon()
+	return
+}
+func (s *TunnelServer) CheckArgs() (err error) {
+	if *s.cfg.Remote == "" {
+		err = fmt.Errorf("remote required")
+		return
+	}
+	return
+}
+
+func (s *TunnelServer) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(TunnelServerArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	if err = s.InitService(); err != nil {
+		return
+	}
+	host, port, _ := net.SplitHostPort(*s.cfg.Local)
+	p, _ := strconv.Atoi(port)
+	s.sc = utils.NewServerChannel(host, p, s.log)
+	if *s.cfg.IsUDP {
+		err = s.sc.ListenUDP(func(packet []byte, localAddr, srcAddr *net.UDPAddr) {
+			s.udpChn <- UDPItem{
+				packet:    &packet,
+				localAddr: localAddr,
+				srcAddr:   srcAddr,
+			}
+		})
+		if err != nil {
+			return
+		}
+		s.log.Printf("proxy on udp tunnel server mode %s", (*s.sc.UDPListener).LocalAddr())
+	} else {
+		err = s.sc.ListenTCP(func(inConn net.Conn) {
+			defer func() {
+				if err := recover(); err != nil {
+					s.log.Printf("tserver conn handler crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+				}
+			}()
+			var outConn net.Conn
+			var ID string
+			for {
+				if s.isStop {
+					return
+				}
+				outConn, ID, err = s.GetOutConn(CONN_SERVER)
+				if err != nil {
+					utils.CloseConn(&outConn)
+					s.log.Printf("connect to %s fail, err: %s, retrying...", *s.cfg.Parent, err)
+					time.Sleep(time.Second * 3)
+					continue
+				} else {
+					break
+				}
+			}
+			inAddr := inConn.RemoteAddr().String()
+			utils.IoBind(inConn, outConn, func(err interface{}) {
+				s.userConns.Remove(inAddr)
+				s.log.Printf("%s conn %s released", *s.cfg.Key, ID)
+			}, s.log)
+			if c, ok := s.userConns.Get(inAddr); ok {
+				(*c.(*net.Conn)).Close()
+			}
+			s.userConns.Set(inAddr, &inConn)
+			s.log.Printf("%s conn %s created", *s.cfg.Key, ID)
+		})
+		if err != nil {
+			return
+		}
+		s.log.Printf("proxy on tunnel server mode %s", (*s.sc.Listener).Addr())
+	}
+	return
+}
+func (s *TunnelServer) Clean() {
+
+}
+func (s *TunnelServer) GetOutConn(typ uint8) (outConn net.Conn, ID string, err error) {
+	outConn, err = s.GetConn()
+	if err != nil {
+		s.log.Printf("connection err: %s", err)
+		return
+	}
+	remoteAddr := "tcp:" + *s.cfg.Remote
+	if *s.cfg.IsUDP {
+		remoteAddr = "udp:" + *s.cfg.Remote
+	}
+	ID = utils.Uniqueid()
+	_, err = outConn.Write(utils.BuildPacket(typ, *s.cfg.Key, ID, remoteAddr, s.cfg.Mgr.serverID))
+	if err != nil {
+		s.log.Printf("write connection data err: %s ,retrying...", err)
+		utils.CloseConn(&outConn)
+		return
+	}
+	return
+}
+func (s *TunnelServer) GetConn() (conn net.Conn, err error) {
+	var _conn tls.Conn
+	_conn, err = utils.TlsConnectHost(*s.cfg.Parent, *s.cfg.Timeout, s.cfg.CertBytes, s.cfg.KeyBytes, nil)
+	if err == nil {
+		conn = net.Conn(&_conn)
+		c, e := smux.Client(conn, &smux.Config{
+			AcceptBacklog:          256,
+			EnableKeepAlive:        true,
+			KeepAliveInterval:      9 * time.Second,
+			ConnectionWriteTimeout: 3 * time.Second,
+			MaxStreamWindowSize:    512 * 1024,
+			LogOutput:              os.Stderr,
+		})
+		if e != nil {
+			s.log.Printf("new mux client conn error,ERR:%s", e)
+			err = e
+			return
+		}
+		conn, e = c.OpenStream()
+		if e != nil {
+			s.log.Printf("mux client conn open stream error,ERR:%s", e)
+			err = e
+			return
+		}
+	}
+	return
+}
+func (s *TunnelServer) UDPConnDeamon() {
+	go func() {
+		defer func() {
+			if err := recover(); err != nil {
+				s.log.Printf("udp conn deamon crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+			}
+		}()
+		var outConn net.Conn
+		// var hb utils.HeartbeatReadWriter
+		var ID string
+		// var cmdChn = make(chan bool, 1000)
+		var err error
+		for {
+			if s.isStop {
+				return
+			}
+			item := <-s.udpChn
+		RETRY:
+			if s.isStop {
+				return
+			}
+			if outConn == nil {
+				for {
+					if s.isStop {
+						return
+					}
+					outConn, ID, err = s.GetOutConn(CONN_SERVER)
+					if err != nil {
+						// cmdChn <- true
+						outConn = nil
+						utils.CloseConn(&outConn)
+						s.log.Printf("connect to %s fail, err: %s, retrying...", *s.cfg.Parent, err)
+						time.Sleep(time.Second * 3)
+						continue
+					} else {
+						go func(outConn net.Conn, ID string) {
+							if s.udpConn != nil {
+								(*s.udpConn).Close()
+							}
+							s.udpConn = &outConn
+							for {
+								if s.isStop {
+									return
+								}
+								srcAddrFromConn, body, err := utils.ReadUDPPacket(outConn)
+								if err == io.EOF || err == io.ErrUnexpectedEOF {
+									s.log.Printf("UDP deamon connection %s exited", ID)
+									break
+								}
+								if err != nil {
+									s.log.Printf("parse revecived udp packet fail, err: %s ,%v", err, body)
+									continue
+								}
+								//s.log.Printf("udp packet revecived over parent , local:%s", srcAddrFromConn)
+								_srcAddr := strings.Split(srcAddrFromConn, ":")
+								if len(_srcAddr) != 2 {
+									s.log.Printf("parse revecived udp packet fail, addr error : %s", srcAddrFromConn)
+									continue
+								}
+								port, _ := strconv.Atoi(_srcAddr[1])
+								dstAddr := &net.UDPAddr{IP: net.ParseIP(_srcAddr[0]), Port: port}
+								_, err = s.sc.UDPListener.WriteToUDP(body, dstAddr)
+								if err != nil {
+									s.log.Printf("udp response to local %s fail,ERR:%s", srcAddrFromConn, err)
+									continue
+								}
+								//s.log.Printf("udp response to local %s success , %v", srcAddrFromConn, body)
+							}
+						}(outConn, ID)
+						break
+					}
+				}
+			}
+			outConn.SetWriteDeadline(time.Now().Add(time.Second))
+			_, err = outConn.Write(utils.UDPPacket(item.srcAddr.String(), *item.packet))
+			outConn.SetWriteDeadline(time.Time{})
+			if err != nil {
+				utils.CloseConn(&outConn)
+				outConn = nil
+				s.log.Printf("write udp packet to %s fail ,flush err:%s ,retrying...", *s.cfg.Parent, err)
+				goto RETRY
+			}
+			//s.log.Printf("write packet %v", *item.packet)
+		}
+	}()
+}

services/udp/udp.go

@@ -0,0 +1,261 @@
+package udp
+
+import (
+	"bufio"
+	"fmt"
+	"hash/crc32"
+	"io"
+	logger "log"
+	"net"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/services"
+	"github.com/snail007/goproxy/services/kcpcfg"
+	"github.com/snail007/goproxy/utils"
+)
+
+type UDPArgs struct {
+	Parent              *string
+	CertFile            *string
+	KeyFile             *string
+	CertBytes           []byte
+	KeyBytes            []byte
+	Local               *string
+	ParentType          *string
+	Timeout             *int
+	CheckParentInterval *int
+}
+type UDP struct {
+	p       utils.ConcurrentMap
+	outPool utils.OutConn
+	cfg     UDPArgs
+	sc      *utils.ServerChannel
+	isStop  bool
+	log     *logger.Logger
+}
+
+func NewUDP() services.Service {
+	return &UDP{
+		outPool: utils.OutConn{},
+		p:       utils.NewConcurrentMap(),
+		isStop:  false,
+	}
+}
+func (s *UDP) CheckArgs() (err error) {
+	if *s.cfg.Parent == "" {
+		err = fmt.Errorf("parent required for udp %s", *s.cfg.Local)
+		return
+	}
+	if *s.cfg.ParentType == "" {
+		err = fmt.Errorf("parent type unkown,use -T <tls|tcp>")
+		return
+	}
+	if *s.cfg.ParentType == "tls" {
+		s.cfg.CertBytes, s.cfg.KeyBytes, err = utils.TlsBytes(*s.cfg.CertFile, *s.cfg.KeyFile)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+func (s *UDP) InitService() (err error) {
+	if *s.cfg.ParentType != "udp" {
+		s.InitOutConnPool()
+	}
+	return
+}
+func (s *UDP) StopService() {
+	defer func() {
+		e := recover()
+		if e != nil {
+			s.log.Printf("stop udp service crashed,%s", e)
+		} else {
+			s.log.Printf("service udp stoped")
+		}
+	}()
+	s.isStop = true
+	if s.sc.Listener != nil && *s.sc.Listener != nil {
+		(*s.sc.Listener).Close()
+	}
+	if s.sc.UDPListener != nil {
+		(*s.sc.UDPListener).Close()
+	}
+}
+func (s *UDP) Start(args interface{}, log *logger.Logger) (err error) {
+	s.log = log
+	s.cfg = args.(UDPArgs)
+	if err = s.CheckArgs(); err != nil {
+		return
+	}
+	s.log.Printf("use %s parent %s", *s.cfg.ParentType, *s.cfg.Parent)
+	if err = s.InitService(); err != nil {
+		return
+	}
+	host, port, _ := net.SplitHostPort(*s.cfg.Local)
+	p, _ := strconv.Atoi(port)
+	sc := utils.NewServerChannel(host, p, s.log)
+	s.sc = &sc
+	err = sc.ListenUDP(s.callback)
+	if err != nil {
+		return
+	}
+	s.log.Printf("udp proxy on %s", (*sc.UDPListener).LocalAddr())
+	return
+}
+
+func (s *UDP) Clean() {
+	s.StopService()
+}
+func (s *UDP) callback(packet []byte, localAddr, srcAddr *net.UDPAddr) {
+	defer func() {
+		if err := recover(); err != nil {
+			s.log.Printf("udp conn handler crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+		}
+	}()
+	var err error
+	switch *s.cfg.ParentType {
+	case "tcp":
+		fallthrough
+	case "tls":
+		err = s.OutToTCP(packet, localAddr, srcAddr)
+	case "udp":
+		err = s.OutToUDP(packet, localAddr, srcAddr)
+	default:
+		err = fmt.Errorf("unkown parent type %s", *s.cfg.ParentType)
+	}
+	if err != nil {
+		s.log.Printf("connect to %s parent %s fail, ERR:%s", *s.cfg.ParentType, *s.cfg.Parent, err)
+	}
+}
+func (s *UDP) GetConn(connKey string) (conn net.Conn, isNew bool, err error) {
+	isNew = !s.p.Has(connKey)
+	var _conn interface{}
+	if isNew {
+		_conn, err = s.outPool.Get()
+		if err != nil {
+			return nil, false, err
+		}
+		s.p.Set(connKey, _conn)
+	} else {
+		_conn, _ = s.p.Get(connKey)
+	}
+	conn = _conn.(net.Conn)
+	return
+}
+func (s *UDP) OutToTCP(packet []byte, localAddr, srcAddr *net.UDPAddr) (err error) {
+	numLocal := crc32.ChecksumIEEE([]byte(localAddr.String()))
+	numSrc := crc32.ChecksumIEEE([]byte(srcAddr.String()))
+	mod := uint32(10)
+	if mod == 0 {
+		mod = 10
+	}
+	connKey := uint64((numLocal/10)*10 + numSrc%mod)
+	conn, isNew, err := s.GetConn(fmt.Sprintf("%d", connKey))
+	if err != nil {
+		s.log.Printf("upd get conn to %s parent %s fail, ERR:%s", *s.cfg.ParentType, *s.cfg.Parent, err)
+		return
+	}
+	if isNew {
+		go func() {
+			defer func() {
+				if err := recover(); err != nil {
+					s.log.Printf("udp conn handler out to tcp crashed with err : %s \nstack: %s", err, string(debug.Stack()))
+				}
+			}()
+			s.log.Printf("conn %d created , local: %s", connKey, srcAddr.String())
+			for {
+				if s.isStop {
+					conn.Close()
+					return
+				}
+				srcAddrFromConn, body, err := utils.ReadUDPPacket(bufio.NewReader(conn))
+				if err == io.EOF || err == io.ErrUnexpectedEOF {
+					//s.log.Printf("connection %d released", connKey)
+					s.p.Remove(fmt.Sprintf("%d", connKey))
+					break
+				}
+				if err != nil {
+					s.log.Printf("parse revecived udp packet fail, err: %s", err)
+					continue
+				}
+				//s.log.Printf("udp packet revecived over parent , local:%s", srcAddrFromConn)
+				_srcAddr := strings.Split(srcAddrFromConn, ":")
+				if len(_srcAddr) != 2 {
+					s.log.Printf("parse revecived udp packet fail, addr error : %s", srcAddrFromConn)
+					continue
+				}
+				port, _ := strconv.Atoi(_srcAddr[1])
+				dstAddr := &net.UDPAddr{IP: net.ParseIP(_srcAddr[0]), Port: port}
+				_, err = s.sc.UDPListener.WriteToUDP(body, dstAddr)
+				if err != nil {
+					s.log.Printf("udp response to local %s fail,ERR:%s", srcAddr, err)
+					continue
+				}
+				//s.log.Printf("udp response to local %s success", srcAddr)
+			}
+		}()
+	}
+	//s.log.Printf("select conn %d , local: %s", connKey, srcAddr.String())
+	writer := bufio.NewWriter(conn)
+	//fmt.Println(conn, writer)
+	writer.Write(utils.UDPPacket(srcAddr.String(), packet))
+	err = writer.Flush()
+	if err != nil {
+		s.log.Printf("write udp packet to %s fail ,flush err:%s", *s.cfg.Parent, err)
+		return
+	}
+	//s.log.Printf("write packet %v", packet)
+	return
+}
+func (s *UDP) OutToUDP(packet []byte, localAddr, srcAddr *net.UDPAddr) (err error) {
+	//s.log.Printf("udp packet revecived:%s,%v", srcAddr, packet)
+	dstAddr, err := net.ResolveUDPAddr("udp", *s.cfg.Parent)
+	if err != nil {
+		s.log.Printf("resolve udp addr %s fail  fail,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	clientSrcAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+	conn, err := net.DialUDP("udp", clientSrcAddr, dstAddr)
+	if err != nil {
+		s.log.Printf("connect to udp %s fail,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	conn.SetDeadline(time.Now().Add(time.Millisecond * time.Duration(*s.cfg.Timeout)))
+	_, err = conn.Write(packet)
+	if err != nil {
+		s.log.Printf("send udp packet to %s fail,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	//s.log.Printf("send udp packet to %s success", dstAddr.String())
+	buf := make([]byte, 512)
+	len, _, err := conn.ReadFromUDP(buf)
+	if err != nil {
+		s.log.Printf("read udp response from %s fail ,ERR:%s", dstAddr.String(), err)
+		return
+	}
+	//s.log.Printf("revecived udp packet from %s , %v", dstAddr.String(), respBody)
+	_, err = s.sc.UDPListener.WriteToUDP(buf[0:len], srcAddr)
+	if err != nil {
+		s.log.Printf("send udp response to cluster fail ,ERR:%s", err)
+		return
+	}
+	//s.log.Printf("send udp response to cluster success ,from:%s", dstAddr.String())
+	return
+}
+func (s *UDP) InitOutConnPool() {
+	if *s.cfg.ParentType == "tls" || *s.cfg.ParentType == "tcp" {
+		//dur int, isTLS bool, certBytes, keyBytes []byte,
+		//parent string, timeout int, InitialCap int, MaxCap int
+		s.outPool = utils.NewOutConn(
+			*s.cfg.CheckParentInterval,
+			*s.cfg.ParentType,
+			kcpcfg.KCPConfigArgs{},
+			s.cfg.CertBytes, s.cfg.KeyBytes, nil,
+			*s.cfg.Parent,
+			*s.cfg.Timeout,
+		)
+	}
+}

uninstall.sh

@@ -1,4 +1,3 @@
 #!/bin/bash
 rm -rf /usr/bin/proxy
-rm -rf /usr/bin/proxyd
 echo "uninstall done"

utils/aes/aes.go

@@ -0,0 +1,84 @@
+// Playbook - http://play.golang.org/p/3wFl4lacjX
+
+package goaes
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"errors"
+	"io"
+	"strings"
+)
+
+func addBase64Padding(value string) string {
+	m := len(value) % 4
+	if m != 0 {
+		value += strings.Repeat("=", 4-m)
+	}
+
+	return value
+}
+
+func removeBase64Padding(value string) string {
+	return strings.Replace(value, "=", "", -1)
+}
+
+func Pad(src []byte) []byte {
+	padding := aes.BlockSize - len(src)%aes.BlockSize
+	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
+	return append(src, padtext...)
+}
+
+func Unpad(src []byte) ([]byte, error) {
+	length := len(src)
+	unpadding := int(src[length-1])
+
+	if unpadding > length {
+		return nil, errors.New("unpad error. This could happen when incorrect encryption key is used")
+	}
+
+	return src[:(length - unpadding)], nil
+}
+
+func Encrypt(key []byte, text []byte) ([]byte, error) {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	msg := Pad(text)
+	ciphertext := make([]byte, aes.BlockSize+len(msg))
+	iv := ciphertext[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		return nil, err
+	}
+
+	cfb := cipher.NewCFBEncrypter(block, iv)
+	cfb.XORKeyStream(ciphertext[aes.BlockSize:], []byte(msg))
+
+	return ciphertext, nil
+}
+
+func Decrypt(key []byte, text []byte) ([]byte, error) {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	if (len(text) % aes.BlockSize) != 0 {
+		return nil, errors.New("blocksize must be multipe of decoded message length")
+	}
+	iv := text[:aes.BlockSize]
+	msg := text[aes.BlockSize:]
+
+	cfb := cipher.NewCFBDecrypter(block, iv)
+	cfb.XORKeyStream(msg, msg)
+
+	unpadMsg, err := Unpad(msg)
+	if err != nil {
+		return nil, err
+	}
+
+	return unpadMsg, nil
+}

utils/cert/cert.go

@@ -0,0 +1,199 @@
+package cert
+
+import (
+	"bytes"
+	cryptorand "crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"io/ioutil"
+	"math/big"
+	"math/rand"
+	"net"
+	"strconv"
+	"time"
+)
+
+func CreateSignCertToFile(rootCa *x509.Certificate, rootKey *rsa.PrivateKey, domainOrIP string, expireDays int, name string) (err error) {
+	cert, key, err := CreateSignCert(rootCa, rootKey, domainOrIP, expireDays)
+	if err != nil {
+		return
+	}
+	err = ioutil.WriteFile(name+".crt", cert, 0755)
+	if err != nil {
+		return
+	}
+	err = ioutil.WriteFile(name+".key", key, 0755)
+	return
+}
+func CreateSignCert(rootCa *x509.Certificate, rootKey *rsa.PrivateKey, domainOrIP string, expireDays int) (certBytes []byte, keyBytes []byte, err error) {
+	cer := &x509.Certificate{
+		SerialNumber: big.NewInt(rand.Int63()), //证书序列号
+		Subject: pkix.Name{
+			Country:            []string{getCountry()},
+			Organization:       []string{domainOrIP},
+			OrganizationalUnit: []string{domainOrIP},
+			CommonName:         domainOrIP,
+		},
+		NotBefore:             time.Now().Add(-time.Hour),
+		NotAfter:              time.Now().Add(time.Hour * 24 * time.Duration(expireDays)),
+		BasicConstraintsValid: true,
+		IsCA:        false,
+		ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth},
+		//KeyUsage:       x509.KeyUsageDigitalSignature | x509.KeyUsageDataEncipherment,
+		EmailAddresses: []string{},
+		IPAddresses:    []net.IP{},
+	}
+	if ip := net.ParseIP(domainOrIP); ip != nil {
+		cer.IPAddresses = append(cer.IPAddresses, ip)
+	} else {
+		cer.DNSNames = append(cer.DNSNames, domainOrIP)
+	}
+
+	// cer.IPAddresses = append(cer.IPAddresses, alternateIPs...)
+	// cer.DNSNames = append(cer.DNSNames, alternateDNS...)
+
+	//生成公钥私钥对
+	priKey, err := rsa.GenerateKey(cryptorand.Reader, 2048)
+	if err != nil {
+		return
+	}
+	certBytes, err = x509.CreateCertificate(cryptorand.Reader, cer, rootCa, &priKey.PublicKey, rootKey)
+	if err != nil {
+		return
+	}
+
+	//编码证书文件和私钥文件
+	caPem := &pem.Block{
+		Type:  "CERTIFICATE",
+		Bytes: certBytes,
+	}
+	certBytes = pem.EncodeToMemory(caPem)
+
+	buf := x509.MarshalPKCS1PrivateKey(priKey)
+	keyPem := &pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: buf,
+	}
+	keyBytes = pem.EncodeToMemory(keyPem)
+	return
+}
+func CreateCaToFile(name, domainOrIP string, expireDays int) (err error) {
+	ca, key, err := CreateCa(domainOrIP, expireDays)
+	if err != nil {
+		return
+	}
+	err = ioutil.WriteFile(name+".crt", ca, 0755)
+	if err != nil {
+		return
+	}
+	err = ioutil.WriteFile(name+".key", key, 0755)
+	return
+}
+func CreateCa(organization string, expireDays int) (certBytes []byte, keyBytes []byte, err error) {
+	priv, err := rsa.GenerateKey(cryptorand.Reader, 2048)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	template := x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			CommonName:         organization,
+			Organization:       []string{organization},
+			OrganizationalUnit: []string{organization},
+			Country:            []string{getCountry()},
+		},
+		NotBefore: time.Now().Add(-time.Hour),
+		NotAfter:  time.Now().Add(time.Hour * 24 * time.Duration(expireDays)),
+
+		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth},
+		BasicConstraintsValid: true,
+		IsCA: true,
+	}
+
+	derBytes, err := x509.CreateCertificate(cryptorand.Reader, &template, &template, &priv.PublicKey, priv)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// Generate cert
+	certBuffer := bytes.Buffer{}
+	if err := pem.Encode(&certBuffer, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
+		return nil, nil, err
+	}
+
+	// Generate key
+	keyBuffer := bytes.Buffer{}
+	if err := pem.Encode(&keyBuffer, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)}); err != nil {
+		return nil, nil, err
+	}
+
+	return certBuffer.Bytes(), keyBuffer.Bytes(), nil
+}
+func ParseCertAndKeyBytes(certPemFileByes, keyFileBytes []byte) (cert *x509.Certificate, privateKey *rsa.PrivateKey, err error) {
+	//解析根证书
+	cert, err = ParseCertBytes(certPemFileByes)
+	if err != nil {
+		return
+	}
+	//解析私钥
+	privateKey, err = ParseKeyBytes(keyFileBytes)
+	return
+}
+func ParseCertAndKey(certPemFile, keyFile string) (cert *x509.Certificate, privateKey *rsa.PrivateKey, err error) {
+	//解析根证书
+	cert, err = ParseCert(certPemFile)
+	if err != nil {
+		return
+	}
+	//解析私钥
+	privateKey, err = ParseKey(keyFile)
+	return
+}
+func ParseCert(certPemFile string) (cert *x509.Certificate, err error) {
+	//解析证书
+	certFile_, err := ioutil.ReadFile(certPemFile)
+	if err != nil {
+		return
+	}
+	cert, err = ParseCertBytes(certFile_)
+	return
+}
+func ParseKey(keyFile string) (key *rsa.PrivateKey, err error) {
+	//解析证书
+	keyFile_, err := ioutil.ReadFile(keyFile)
+	if err != nil {
+		return
+	}
+	key, err = ParseKeyBytes(keyFile_)
+	return
+}
+func ParseCertBytes(certPemFileBytes []byte) (cert *x509.Certificate, err error) {
+	caBlock, _ := pem.Decode(certPemFileBytes)
+	cert, err = x509.ParseCertificate(caBlock.Bytes)
+	return
+}
+func ParseKeyBytes(keyFileBytes []byte) (praKey *rsa.PrivateKey, err error) {
+	keyBlock, _ := pem.Decode(keyFileBytes)
+	praKey, err = x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
+	return
+}
+func getCountry() string {
+	CList := []string{"AD", "AE", "AF", "AG", "AI", "AL", "AM", "AO", "AR", "AT", "AU", "AZ", "BB", "BD", "BE", "BF", "BG", "BH", "BI", "BJ", "BL", "BM", "BN", "BO", "BR", "BS", "BW", "BY", "BZ", "CA", "CF", "CG", "CH", "CK", "CL", "CM", "CN", "CO", "CR", "CS", "CU", "CY", "CZ", "DE", "DJ", "DK", "DO", "DZ", "EC", "EE", "EG", "ES", "ET", "FI", "FJ", "FR", "GA", "GB", "GD", "GE", "GF", "GH", "GI", "GM", "GN", "GR", "GT", "GU", "GY", "HK", "HN", "HT", "HU", "ID", "IE", "IL", "IN", "IQ", "IR", "IS", "IT", "JM", "JO", "JP", "KE", "KG", "KH", "KP", "KR", "KT", "KW", "KZ", "LA", "LB", "LC", "LI", "LK", "LR", "LS", "LT", "LU", "LV", "LY", "MA", "MC", "MD", "MG", "ML", "MM", "MN", "MO", "MS", "MT", "MU", "MV", "MW", "MX", "MY", "MZ", "NA", "NE", "NG", "NI", "NL", "NO", "NP", "NR", "NZ", "OM", "PA", "PE", "PF", "PG", "PH", "PK", "PL", "PR", "PT", "PY", "QA", "RO", "RU", "SA", "SB", "SC", "SD", "SE", "SG", "SI", "SK", "SL", "SM", "SN", "SO", "SR", "ST", "SV", "SY", "SZ", "TD", "TG", "TH", "TJ", "TM", "TN", "TO", "TR", "TT", "TW", "TZ", "UA", "UG", "US", "UY", "UZ", "VC", "VE", "VN", "YE", "YU", "ZA", "ZM", "ZR", "ZW"}
+	return CList[int(randInt(4))%len(CList)]
+}
+func randInt(strLen int) int64 {
+	codes := "123456789"
+	codeLen := len(codes)
+	data := make([]byte, strLen)
+	rand.Seed(time.Now().UnixNano() + rand.Int63() + rand.Int63() + rand.Int63() + rand.Int63())
+	for i := 0; i < strLen; i++ {
+		idx := rand.Intn(codeLen)
+		data[i] = byte(codes[idx])
+	}
+	i, _ := strconv.ParseInt(string(data), 10, 64)
+	return i
+}

utils/cert/cert_test.go

@@ -0,0 +1,71 @@
+package cert
+
+import (
+	"os"
+	"testing"
+)
+
+func TestCaGen(t *testing.T) {
+	err := CreateCaToFile("ca", "test", 365)
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	ca, key, err := ParseCertAndKey("ca.crt", "ca.key")
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	if ca.Subject.Organization[0] != "test" {
+		t.Fatalf("Organization %s not match test", ca.Subject.Organization[0])
+		return
+	}
+	err = key.Validate()
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	os.Remove("ca.crt")
+	os.Remove("ca.key")
+
+}
+func TestSign(t *testing.T) {
+	err := CreateCaToFile("ca", "test", 365)
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	ca, key, err := ParseCertAndKey("ca.crt", "ca.key")
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	err = CreateCaToFile("ca", "test", 365)
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	err = CreateSignCertToFile(ca, key, "server.com", 365, "server")
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	servercrt, serverkey, err := ParseCertAndKey("server.crt", "server.key")
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	if servercrt.Subject.CommonName != "server.com" {
+		t.Fatalf("CommonName %s not match server.com", ca.Subject.CommonName)
+		return
+	}
+	err = serverkey.Validate()
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	os.Remove("ca.crt")
+	os.Remove("ca.key")
+	os.Remove("server.crt")
+	os.Remove("server.key")
+}

utils/conncrypt/conncrypt.go

@@ -0,0 +1,95 @@
+package conncrypt
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/sha256"
+	"hash"
+	"io"
+	"net"
+
+	"golang.org/x/crypto/pbkdf2"
+)
+
+//Confg defaults
+const DefaultIterations = 1024
+const DefaultKeySize = 24 //256bits
+var DefaultHashFunc = sha256.New
+var DefaultSalt = []byte(`
+(;QUHj.BQ?RXzYSO]ifkXp/G!kFmWyXyEV6Nt!d|@bo+N$L9+<d$|g6e26T}
+Ao<:>SOd,6acYKY_ec+(x"R";\'4&fTAVu92GVA-wxBptOTM^2,iP5%)wnhW
+hwk=]Snsgymt!3gbP2pe=J//}1a?lp9ej=&TB!C_V(cT2?z8wyoL_-13fd[]
+`) //salt must be predefined in order to derive the same key
+
+//Config stores the PBKDF2 key generation parameters
+type Config struct {
+	Password   string
+	Salt       []byte
+	Iterations int
+	KeySize    int
+	HashFunc   func() hash.Hash
+}
+
+//New creates an AES encrypted net.Conn by generating
+//a key using PBKDF2 with the provided configuration
+func New(conn net.Conn, c *Config) net.Conn {
+	//set defaults
+	if len(c.Salt) == 0 {
+		c.Salt = DefaultSalt
+	}
+	if c.Iterations == 0 {
+		c.Iterations = DefaultIterations
+	}
+	if c.KeySize != 16 && c.KeySize != 24 && c.KeySize != 32 {
+		c.KeySize = DefaultKeySize
+	}
+	if c.HashFunc == nil {
+		c.HashFunc = DefaultHashFunc
+	}
+
+	//generate key
+	key := pbkdf2.Key([]byte(c.Password), c.Salt, c.Iterations, c.KeySize, c.HashFunc)
+
+	// could use scrypt, but it's a bit slow...
+	// dk, err := scrypt.Key([]byte(c.Password), c.Salt, 16384, 8, 1, 32)
+
+	//key will be always be the correct size so this will never error
+	conn, _ = NewFromKey(conn, key)
+	return conn
+}
+
+//NewFromKey creates an AES encrypted net.Conn using the provided key
+func NewFromKey(conn net.Conn, key []byte) (net.Conn, error) {
+	block, err := aes.NewCipher([]byte(key))
+	if err != nil {
+		return nil, err
+	}
+	//hash(key) -> read IV
+	riv := DefaultHashFunc().Sum(key)
+	rstream := cipher.NewCFBDecrypter(block, riv[:aes.BlockSize])
+	reader := &cipher.StreamReader{S: rstream, R: conn}
+	//hash(read IV) -> write IV
+	wiv := DefaultHashFunc().Sum(riv)
+	wstream := cipher.NewCFBEncrypter(block, wiv[:aes.BlockSize])
+	writer := &cipher.StreamWriter{S: wstream, W: conn}
+
+	return &cryptoConn{
+		Conn: conn,
+		r:    reader,
+		w:    writer,
+	}, nil
+}
+
+type cryptoConn struct {
+	net.Conn
+	r io.Reader
+	w io.Writer
+}
+
+//replace read and write methods
+func (c *cryptoConn) Read(p []byte) (int, error) {
+	return c.r.Read(p)
+}
+func (c *cryptoConn) Write(p []byte) (int, error) {
+	return c.w.Write(p)
+}

utils/functions.go

@@ -0,0 +1,634 @@
+package utils
+
+import (
+	"bufio"
+	"bytes"
+	"crypto/sha1"
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/binary"
+	"encoding/pem"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	logger "log"
+	"math/rand"
+	"net"
+	"net/http"
+	"os"
+
+	"github.com/snail007/goproxy/services/kcpcfg"
+
+	"golang.org/x/crypto/pbkdf2"
+
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/utils/id"
+
+	kcp "github.com/xtaci/kcp-go"
+)
+
+func IoBind(dst io.ReadWriteCloser, src io.ReadWriteCloser, fn func(err interface{}), log *logger.Logger) {
+	go func() {
+		defer func() {
+			if err := recover(); err != nil {
+				log.Printf("bind crashed %s", err)
+			}
+		}()
+		e1 := make(chan interface{}, 1)
+		e2 := make(chan interface{}, 1)
+		go func() {
+			defer func() {
+				if err := recover(); err != nil {
+					log.Printf("bind crashed %s", err)
+				}
+			}()
+			//_, err := io.Copy(dst, src)
+			err := ioCopy(dst, src)
+			e1 <- err
+		}()
+		go func() {
+			defer func() {
+				if err := recover(); err != nil {
+					log.Printf("bind crashed %s", err)
+				}
+			}()
+			//_, err := io.Copy(src, dst)
+			err := ioCopy(src, dst)
+			e2 <- err
+		}()
+		var err interface{}
+		select {
+		case err = <-e1:
+			//log.Printf("e1")
+		case err = <-e2:
+			//log.Printf("e2")
+		}
+		src.Close()
+		dst.Close()
+		if fn != nil {
+			fn(err)
+		}
+	}()
+}
+func ioCopy(dst io.ReadWriter, src io.ReadWriter) (err error) {
+	buf := LeakyBuffer.Get()
+	defer LeakyBuffer.Put(buf)
+	n := 0
+	for {
+		n, err = src.Read(buf)
+		if n > 0 {
+			if _, e := dst.Write(buf[0:n]); e != nil {
+				return e
+			}
+		}
+		if err != nil {
+			return
+		}
+	}
+}
+func TlsConnectHost(host string, timeout int, certBytes, keyBytes, caCertBytes []byte) (conn tls.Conn, err error) {
+	h := strings.Split(host, ":")
+	port, _ := strconv.Atoi(h[1])
+	return TlsConnect(h[0], port, timeout, certBytes, keyBytes, caCertBytes)
+}
+
+func TlsConnect(host string, port, timeout int, certBytes, keyBytes, caCertBytes []byte) (conn tls.Conn, err error) {
+	conf, err := getRequestTlsConfig(certBytes, keyBytes, caCertBytes)
+	if err != nil {
+		return
+	}
+	_conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", host, port), time.Duration(timeout)*time.Millisecond)
+	if err != nil {
+		return
+	}
+	return *tls.Client(_conn, conf), err
+}
+func getRequestTlsConfig(certBytes, keyBytes, caCertBytes []byte) (conf *tls.Config, err error) {
+
+	var cert tls.Certificate
+	cert, err = tls.X509KeyPair(certBytes, keyBytes)
+	if err != nil {
+		return
+	}
+	serverCertPool := x509.NewCertPool()
+	caBytes := certBytes
+	if caCertBytes != nil {
+		caBytes = caCertBytes
+	}
+	ok := serverCertPool.AppendCertsFromPEM(caBytes)
+	if !ok {
+		err = errors.New("failed to parse root certificate")
+	}
+	block, _ := pem.Decode(caBytes)
+	if block == nil {
+		panic("failed to parse certificate PEM")
+	}
+	x509Cert, _ := x509.ParseCertificate(block.Bytes)
+	if x509Cert == nil {
+		panic("failed to parse block")
+	}
+	conf = &tls.Config{
+		RootCAs:            serverCertPool,
+		Certificates:       []tls.Certificate{cert},
+		InsecureSkipVerify: true,
+		ServerName:         x509Cert.Subject.CommonName,
+		VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
+			opts := x509.VerifyOptions{
+				Roots: serverCertPool,
+			}
+			for _, rawCert := range rawCerts {
+				cert, _ := x509.ParseCertificate(rawCert)
+				_, err := cert.Verify(opts)
+				if err != nil {
+					return err
+				}
+			}
+			return nil
+		},
+	}
+	return
+}
+
+func ConnectHost(hostAndPort string, timeout int) (conn net.Conn, err error) {
+	conn, err = net.DialTimeout("tcp", hostAndPort, time.Duration(timeout)*time.Millisecond)
+	return
+}
+func ConnectKCPHost(hostAndPort string, config kcpcfg.KCPConfigArgs) (conn net.Conn, err error) {
+	kcpconn, err := kcp.DialWithOptions(hostAndPort, config.Block, *config.DataShard, *config.ParityShard)
+	if err != nil {
+		return
+	}
+	kcpconn.SetStreamMode(true)
+	kcpconn.SetWriteDelay(true)
+	kcpconn.SetNoDelay(*config.NoDelay, *config.Interval, *config.Resend, *config.NoCongestion)
+	kcpconn.SetMtu(*config.MTU)
+	kcpconn.SetWindowSize(*config.SndWnd, *config.RcvWnd)
+	kcpconn.SetACKNoDelay(*config.AckNodelay)
+	if *config.NoComp {
+		return kcpconn, err
+	}
+	return NewCompStream(kcpconn), err
+}
+
+func PathExists(_path string) bool {
+	_, err := os.Stat(_path)
+	if err != nil && os.IsNotExist(err) {
+		return false
+	}
+	return true
+}
+func HTTPGet(URL string, timeout int) (err error) {
+	tr := &http.Transport{}
+	var resp *http.Response
+	var client *http.Client
+	defer func() {
+		if resp != nil && resp.Body != nil {
+			resp.Body.Close()
+		}
+		tr.CloseIdleConnections()
+	}()
+	client = &http.Client{Timeout: time.Millisecond * time.Duration(timeout), Transport: tr}
+	resp, err = client.Get(URL)
+	if err != nil {
+		return
+	}
+	return
+}
+
+func CloseConn(conn *net.Conn) {
+	defer func() {
+		_ = recover()
+	}()
+	if conn != nil && *conn != nil {
+		(*conn).SetDeadline(time.Now().Add(time.Millisecond))
+		(*conn).Close()
+	}
+}
+func GetAllInterfaceAddr() ([]net.IP, error) {
+
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return nil, err
+	}
+	addresses := []net.IP{}
+	for _, iface := range ifaces {
+
+		if iface.Flags&net.FlagUp == 0 {
+			continue // interface down
+		}
+		// if iface.Flags&net.FlagLoopback != 0 {
+		// 	continue // loopback interface
+		// }
+		addrs, err := iface.Addrs()
+		if err != nil {
+			continue
+		}
+
+		for _, addr := range addrs {
+			var ip net.IP
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			}
+			// if ip == nil || ip.IsLoopback() {
+			// 	continue
+			// }
+			ip = ip.To4()
+			if ip == nil {
+				continue // not an ipv4 address
+			}
+			addresses = append(addresses, ip)
+		}
+	}
+	if len(addresses) == 0 {
+		return nil, fmt.Errorf("no address Found, net.InterfaceAddrs: %v", addresses)
+	}
+	//only need first
+	return addresses, nil
+}
+func UDPPacket(srcAddr string, packet []byte) []byte {
+	addrBytes := []byte(srcAddr)
+	addrLength := uint16(len(addrBytes))
+	bodyLength := uint16(len(packet))
+	//log.Printf("build packet : addr len %d, body len %d", addrLength, bodyLength)
+	pkg := new(bytes.Buffer)
+	binary.Write(pkg, binary.LittleEndian, addrLength)
+	binary.Write(pkg, binary.LittleEndian, addrBytes)
+	binary.Write(pkg, binary.LittleEndian, bodyLength)
+	binary.Write(pkg, binary.LittleEndian, packet)
+	return pkg.Bytes()
+}
+func ReadUDPPacket(_reader io.Reader) (srcAddr string, packet []byte, err error) {
+	reader := bufio.NewReader(_reader)
+	var addrLength uint16
+	var bodyLength uint16
+	err = binary.Read(reader, binary.LittleEndian, &addrLength)
+	if err != nil {
+		return
+	}
+	_srcAddr := make([]byte, addrLength)
+	n, err := reader.Read(_srcAddr)
+	if err != nil {
+		return
+	}
+	if n != int(addrLength) {
+		err = fmt.Errorf("n != int(addrLength), %d,%d", n, addrLength)
+		return
+	}
+	srcAddr = string(_srcAddr)
+
+	err = binary.Read(reader, binary.LittleEndian, &bodyLength)
+	if err != nil {
+
+		return
+	}
+	packet = make([]byte, bodyLength)
+	n, err = reader.Read(packet)
+	if err != nil {
+		return
+	}
+	if n != int(bodyLength) {
+		err = fmt.Errorf("n != int(bodyLength), %d,%d", n, bodyLength)
+		return
+	}
+	return
+}
+func Uniqueid() string {
+	return xid.New().String()
+	// var src = rand.NewSource(time.Now().UnixNano())
+	// s := fmt.Sprintf("%d", src.Int63())
+	// return s[len(s)-5:len(s)-1] + fmt.Sprintf("%d", uint64(time.Now().UnixNano()))[8:]
+}
+func RandString(strlen int) string {
+	codes := "QWERTYUIOPLKJHGFDSAZXCVBNMabcdefghijklmnopqrstuvwxyz0123456789"
+	codeLen := len(codes)
+	data := make([]byte, strlen)
+	rand.Seed(time.Now().UnixNano() + rand.Int63() + rand.Int63() + rand.Int63() + rand.Int63())
+	for i := 0; i < strlen; i++ {
+		idx := rand.Intn(codeLen)
+		data[i] = byte(codes[idx])
+	}
+	return string(data)
+}
+func RandInt(strLen int) int64 {
+	codes := "123456789"
+	codeLen := len(codes)
+	data := make([]byte, strLen)
+	rand.Seed(time.Now().UnixNano() + rand.Int63() + rand.Int63() + rand.Int63() + rand.Int63())
+	for i := 0; i < strLen; i++ {
+		idx := rand.Intn(codeLen)
+		data[i] = byte(codes[idx])
+	}
+	i, _ := strconv.ParseInt(string(data), 10, 64)
+	return i
+}
+func ReadData(r io.Reader) (data string, err error) {
+	var len uint16
+	err = binary.Read(r, binary.LittleEndian, &len)
+	if err != nil {
+		return
+	}
+	var n int
+	_data := make([]byte, len)
+	n, err = r.Read(_data)
+	if err != nil {
+		return
+	}
+	if n != int(len) {
+		err = fmt.Errorf("error data len")
+		return
+	}
+	data = string(_data)
+	return
+}
+func ReadPacketData(r io.Reader, data ...*string) (err error) {
+	for _, d := range data {
+		*d, err = ReadData(r)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+func ReadPacket(r io.Reader, typ *uint8, data ...*string) (err error) {
+	var connType uint8
+	err = binary.Read(r, binary.LittleEndian, &connType)
+	if err != nil {
+		return
+	}
+	*typ = connType
+	for _, d := range data {
+		*d, err = ReadData(r)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+func BuildPacket(typ uint8, data ...string) []byte {
+	pkg := new(bytes.Buffer)
+	binary.Write(pkg, binary.LittleEndian, typ)
+	for _, d := range data {
+		bytes := []byte(d)
+		binary.Write(pkg, binary.LittleEndian, uint16(len(bytes)))
+		binary.Write(pkg, binary.LittleEndian, bytes)
+	}
+	return pkg.Bytes()
+}
+func BuildPacketData(data ...string) []byte {
+	pkg := new(bytes.Buffer)
+	for _, d := range data {
+		bytes := []byte(d)
+		binary.Write(pkg, binary.LittleEndian, uint16(len(bytes)))
+		binary.Write(pkg, binary.LittleEndian, bytes)
+	}
+	return pkg.Bytes()
+}
+func SubStr(str string, start, end int) string {
+	if len(str) == 0 {
+		return ""
+	}
+	if end >= len(str) {
+		end = len(str) - 1
+	}
+	return str[start:end]
+}
+func SubBytes(bytes []byte, start, end int) []byte {
+	if len(bytes) == 0 {
+		return []byte{}
+	}
+	if end >= len(bytes) {
+		end = len(bytes) - 1
+	}
+	return bytes[start:end]
+}
+func TlsBytes(cert, key string) (certBytes, keyBytes []byte, err error) {
+	certBytes, err = ioutil.ReadFile(cert)
+	if err != nil {
+		err = fmt.Errorf("err : %s", err)
+		return
+	}
+	keyBytes, err = ioutil.ReadFile(key)
+	if err != nil {
+		err = fmt.Errorf("err : %s", err)
+		return
+	}
+	return
+}
+func GetKCPBlock(method, key string) (block kcp.BlockCrypt) {
+	pass := pbkdf2.Key([]byte(key), []byte(key), 4096, 32, sha1.New)
+	switch method {
+	case "sm4":
+		block, _ = kcp.NewSM4BlockCrypt(pass[:16])
+	case "tea":
+		block, _ = kcp.NewTEABlockCrypt(pass[:16])
+	case "xor":
+		block, _ = kcp.NewSimpleXORBlockCrypt(pass)
+	case "none":
+		block, _ = kcp.NewNoneBlockCrypt(pass)
+	case "aes-128":
+		block, _ = kcp.NewAESBlockCrypt(pass[:16])
+	case "aes-192":
+		block, _ = kcp.NewAESBlockCrypt(pass[:24])
+	case "blowfish":
+		block, _ = kcp.NewBlowfishBlockCrypt(pass)
+	case "twofish":
+		block, _ = kcp.NewTwofishBlockCrypt(pass)
+	case "cast5":
+		block, _ = kcp.NewCast5BlockCrypt(pass[:16])
+	case "3des":
+		block, _ = kcp.NewTripleDESBlockCrypt(pass[:24])
+	case "xtea":
+		block, _ = kcp.NewXTEABlockCrypt(pass[:16])
+	case "salsa20":
+		block, _ = kcp.NewSalsa20BlockCrypt(pass)
+	default:
+		block, _ = kcp.NewAESBlockCrypt(pass)
+	}
+	return
+}
+func HttpGet(URL string, timeout int, host ...string) (body []byte, code int, err error) {
+	var tr *http.Transport
+	var client *http.Client
+	conf := &tls.Config{
+		InsecureSkipVerify: true,
+	}
+	if strings.Contains(URL, "https://") {
+		tr = &http.Transport{TLSClientConfig: conf}
+		client = &http.Client{Timeout: time.Millisecond * time.Duration(timeout), Transport: tr}
+	} else {
+		tr = &http.Transport{}
+		client = &http.Client{Timeout: time.Millisecond * time.Duration(timeout), Transport: tr}
+	}
+	defer tr.CloseIdleConnections()
+
+	//resp, err := client.Get(URL)
+	req, err := http.NewRequest("GET", URL, nil)
+	if err != nil {
+		return
+	}
+	if len(host) == 1 && host[0] != "" {
+		req.Host = host[0]
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	code = resp.StatusCode
+	body, err = ioutil.ReadAll(resp.Body)
+	return
+}
+func IsIternalIP(domainOrIP string, always bool) bool {
+	var outIPs []net.IP
+	var err error
+	var isDomain bool
+	if net.ParseIP(domainOrIP) == nil {
+		isDomain = true
+	}
+	if always && isDomain {
+		return false
+	}
+
+	if isDomain {
+		outIPs, err = net.LookupIP(domainOrIP)
+	} else {
+		outIPs = []net.IP{net.ParseIP(domainOrIP)}
+	}
+
+	if err != nil {
+		return false
+	}
+	for _, ip := range outIPs {
+		if ip.IsLoopback() {
+			return true
+		}
+		if ip.To4().Mask(net.IPv4Mask(255, 0, 0, 0)).String() == "10.0.0.0" {
+			return true
+		}
+		if ip.To4().Mask(net.IPv4Mask(255, 0, 0, 0)).String() == "192.168.0.0" {
+			return true
+		}
+		if ip.To4().Mask(net.IPv4Mask(255, 0, 0, 0)).String() == "172.0.0.0" {
+			i, _ := strconv.Atoi(strings.Split(ip.To4().String(), ".")[1])
+			return i >= 16 && i <= 31
+		}
+	}
+	return false
+}
+func IsHTTP(head []byte) bool {
+	keys := []string{"GET", "HEAD", "POST", "PUT", "DELETE", "CONNECT", "OPTIONS", "TRACE", "PATCH"}
+	for _, key := range keys {
+		if bytes.HasPrefix(head, []byte(key)) || bytes.HasPrefix(head, []byte(strings.ToLower(key))) {
+			return true
+		}
+	}
+	return false
+}
+func IsSocks5(head []byte) bool {
+	if len(head) < 3 {
+		return false
+	}
+	if head[0] == uint8(0x05) && 0 < int(head[1]) && int(head[1]) < 255 {
+		if len(head) == 2+int(head[1]) {
+			return true
+		}
+	}
+	return false
+}
+func RemoveProxyHeaders(head []byte) []byte {
+	newLines := [][]byte{}
+	var keys = map[string]bool{}
+	lines := bytes.Split(head, []byte("\r\n"))
+	IsBody := false
+	i := -1
+	for _, line := range lines {
+		i++
+		if len(line) == 0 || IsBody {
+			newLines = append(newLines, line)
+			IsBody = true
+		} else {
+			hline := bytes.SplitN(line, []byte(":"), 2)
+			if i == 0 && IsHTTP(head) {
+				newLines = append(newLines, line)
+				continue
+			}
+			if len(hline) != 2 {
+				continue
+			}
+			k := strings.ToUpper(string(hline[0]))
+			if _, ok := keys[k]; ok || strings.HasPrefix(k, "PROXY-") {
+				continue
+			}
+			keys[k] = true
+			newLines = append(newLines, line)
+		}
+	}
+	return bytes.Join(newLines, []byte("\r\n"))
+}
+func InsertProxyHeaders(head []byte, headers string) []byte {
+	return bytes.Replace(head, []byte("\r\n"), []byte("\r\n"+headers), 1)
+}
+
+// type sockaddr struct {
+// 	family uint16
+// 	data   [14]byte
+// }
+
+// const SO_ORIGINAL_DST = 80
+
+// realServerAddress returns an intercepted connection's original destination.
+// func realServerAddress(conn *net.Conn) (string, error) {
+// 	tcpConn, ok := (*conn).(*net.TCPConn)
+// 	if !ok {
+// 		return "", errors.New("not a TCPConn")
+// 	}
+
+// 	file, err := tcpConn.File()
+// 	if err != nil {
+// 		return "", err
+// 	}
+
+// 	// To avoid potential problems from making the socket non-blocking.
+// 	tcpConn.Close()
+// 	*conn, err = net.FileConn(file)
+// 	if err != nil {
+// 		return "", err
+// 	}
+
+// 	defer file.Close()
+// 	fd := file.Fd()
+
+// 	var addr sockaddr
+// 	size := uint32(unsafe.Sizeof(addr))
+// 	err = getsockopt(int(fd), syscall.SOL_IP, SO_ORIGINAL_DST, uintptr(unsafe.Pointer(&addr)), &size)
+// 	if err != nil {
+// 		return "", err
+// 	}
+
+// 	var ip net.IP
+// 	switch addr.family {
+// 	case syscall.AF_INET:
+// 		ip = addr.data[2:6]
+// 	default:
+// 		return "", errors.New("unrecognized address family")
+// 	}
+
+// 	port := int(addr.data[0])<<8 + int(addr.data[1])
+
+// 	return net.JoinHostPort(ip.String(), strconv.Itoa(port)), nil
+// }
+
+// func getsockopt(s int, level int, name int, val uintptr, vallen *uint32) (err error) {
+// 	_, _, e1 := syscall.Syscall6(syscall.SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
+// 	if e1 != 0 {
+// 		err = e1
+// 	}
+// 	return
+// }

utils/id/xid.go

@@ -0,0 +1,264 @@
+// Package xid is a globally unique id generator suited for web scale
+//
+// Xid is using Mongo Object ID algorithm to generate globally unique ids:
+// https://docs.mongodb.org/manual/reference/object-id/
+//
+//   - 4-byte value representing the seconds since the Unix epoch,
+//   - 3-byte machine identifier,
+//   - 2-byte process id, and
+//   - 3-byte counter, starting with a random value.
+//
+// The binary representation of the id is compatible with Mongo 12 bytes Object IDs.
+// The string representation is using base32 hex (w/o padding) for better space efficiency
+// when stored in that form (20 bytes). The hex variant of base32 is used to retain the
+// sortable property of the id.
+//
+// Xid doesn't use base64 because case sensitivity and the 2 non alphanum chars may be an
+// issue when transported as a string between various systems. Base36 wasn't retained either
+// because 1/ it's not standard 2/ the resulting size is not predictable (not bit aligned)
+// and 3/ it would not remain sortable. To validate a base32 `xid`, expect a 20 chars long,
+// all lowercase sequence of `a` to `v` letters and `0` to `9` numbers (`[0-9a-v]{20}`).
+//
+// UUID is 16 bytes (128 bits), snowflake is 8 bytes (64 bits), xid stands in between
+// with 12 bytes with a more compact string representation ready for the web and no
+// required configuration or central generation server.
+//
+// Features:
+//
+//   - Size: 12 bytes (96 bits), smaller than UUID, larger than snowflake
+//   - Base32 hex encoded by default (16 bytes storage when transported as printable string)
+//   - Non configured, you don't need set a unique machine and/or data center id
+//   - K-ordered
+//   - Embedded time with 1 second precision
+//   - Unicity guaranted for 16,777,216 (24 bits) unique ids per second and per host/process
+//
+// Best used with xlog's RequestIDHandler (https://godoc.org/github.com/rs/xlog#RequestIDHandler).
+//
+// References:
+//
+//   - http://www.slideshare.net/davegardnerisme/unique-id-generation-in-distributed-systems
+//   - https://en.wikipedia.org/wiki/Universally_unique_identifier
+//   - https://blog.twitter.com/2010/announcing-snowflake
+package xid
+
+import (
+	"crypto/md5"
+	"crypto/rand"
+	"database/sql/driver"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"os"
+	"sync/atomic"
+	"time"
+)
+
+// Code inspired from mgo/bson ObjectId
+
+// ID represents a unique request id
+type ID [rawLen]byte
+
+const (
+	encodedLen = 20 // string encoded len
+	decodedLen = 15 // len after base32 decoding with the padded data
+	rawLen     = 12 // binary raw len
+
+	// encoding stores a custom version of the base32 encoding with lower case
+	// letters.
+	encoding = "0123456789abcdefghijklmnopqrstuv"
+)
+
+// ErrInvalidID is returned when trying to unmarshal an invalid ID
+var ErrInvalidID = errors.New("xid: invalid ID")
+
+// objectIDCounter is atomically incremented when generating a new ObjectId
+// using NewObjectId() function. It's used as a counter part of an id.
+// This id is initialized with a random value.
+var objectIDCounter = randInt()
+
+// machineId stores machine id generated once and used in subsequent calls
+// to NewObjectId function.
+var machineID = readMachineID()
+
+// pid stores the current process id
+var pid = os.Getpid()
+
+// dec is the decoding map for base32 encoding
+var dec [256]byte
+
+func init() {
+	for i := 0; i < len(dec); i++ {
+		dec[i] = 0xFF
+	}
+	for i := 0; i < len(encoding); i++ {
+		dec[encoding[i]] = byte(i)
+	}
+}
+
+// readMachineId generates machine id and puts it into the machineId global
+// variable. If this function fails to get the hostname, it will cause
+// a runtime error.
+func readMachineID() []byte {
+	id := make([]byte, 3)
+	if hostname, err := os.Hostname(); err == nil {
+		hw := md5.New()
+		hw.Write([]byte(hostname))
+		copy(id, hw.Sum(nil))
+	} else {
+		// Fallback to rand number if machine id can't be gathered
+		if _, randErr := rand.Reader.Read(id); randErr != nil {
+			panic(fmt.Errorf("xid: cannot get hostname nor generate a random number: %v; %v", err, randErr))
+		}
+	}
+	return id
+}
+
+// randInt generates a random uint32
+func randInt() uint32 {
+	b := make([]byte, 3)
+	if _, err := rand.Reader.Read(b); err != nil {
+		panic(fmt.Errorf("xid: cannot generate random number: %v;", err))
+	}
+	return uint32(b[0])<<16 | uint32(b[1])<<8 | uint32(b[2])
+}
+
+// New generates a globaly unique ID
+func New() ID {
+	var id ID
+	// Timestamp, 4 bytes, big endian
+	binary.BigEndian.PutUint32(id[:], uint32(time.Now().Unix()))
+	// Machine, first 3 bytes of md5(hostname)
+	id[4] = machineID[0]
+	id[5] = machineID[1]
+	id[6] = machineID[2]
+	// Pid, 2 bytes, specs don't specify endianness, but we use big endian.
+	id[7] = byte(pid >> 8)
+	id[8] = byte(pid)
+	// Increment, 3 bytes, big endian
+	i := atomic.AddUint32(&objectIDCounter, 1)
+	id[9] = byte(i >> 16)
+	id[10] = byte(i >> 8)
+	id[11] = byte(i)
+	return id
+}
+
+// FromString reads an ID from its string representation
+func FromString(id string) (ID, error) {
+	i := &ID{}
+	err := i.UnmarshalText([]byte(id))
+	return *i, err
+}
+
+// String returns a base32 hex lowercased with no padding representation of the id (char set is 0-9, a-v).
+func (id ID) String() string {
+	text := make([]byte, encodedLen)
+	encode(text, id[:])
+	return string(text)
+}
+
+// MarshalText implements encoding/text TextMarshaler interface
+func (id ID) MarshalText() ([]byte, error) {
+	text := make([]byte, encodedLen)
+	encode(text, id[:])
+	return text, nil
+}
+
+// encode by unrolling the stdlib base32 algorithm + removing all safe checks
+func encode(dst, id []byte) {
+	dst[0] = encoding[id[0]>>3]
+	dst[1] = encoding[(id[1]>>6)&0x1F|(id[0]<<2)&0x1F]
+	dst[2] = encoding[(id[1]>>1)&0x1F]
+	dst[3] = encoding[(id[2]>>4)&0x1F|(id[1]<<4)&0x1F]
+	dst[4] = encoding[id[3]>>7|(id[2]<<1)&0x1F]
+	dst[5] = encoding[(id[3]>>2)&0x1F]
+	dst[6] = encoding[id[4]>>5|(id[3]<<3)&0x1F]
+	dst[7] = encoding[id[4]&0x1F]
+	dst[8] = encoding[id[5]>>3]
+	dst[9] = encoding[(id[6]>>6)&0x1F|(id[5]<<2)&0x1F]
+	dst[10] = encoding[(id[6]>>1)&0x1F]
+	dst[11] = encoding[(id[7]>>4)&0x1F|(id[6]<<4)&0x1F]
+	dst[12] = encoding[id[8]>>7|(id[7]<<1)&0x1F]
+	dst[13] = encoding[(id[8]>>2)&0x1F]
+	dst[14] = encoding[(id[9]>>5)|(id[8]<<3)&0x1F]
+	dst[15] = encoding[id[9]&0x1F]
+	dst[16] = encoding[id[10]>>3]
+	dst[17] = encoding[(id[11]>>6)&0x1F|(id[10]<<2)&0x1F]
+	dst[18] = encoding[(id[11]>>1)&0x1F]
+	dst[19] = encoding[(id[11]<<4)&0x1F]
+}
+
+// UnmarshalText implements encoding/text TextUnmarshaler interface
+func (id *ID) UnmarshalText(text []byte) error {
+	if len(text) != encodedLen {
+		return ErrInvalidID
+	}
+	for _, c := range text {
+		if dec[c] == 0xFF {
+			return ErrInvalidID
+		}
+	}
+	decode(id, text)
+	return nil
+}
+
+// decode by unrolling the stdlib base32 algorithm + removing all safe checks
+func decode(id *ID, src []byte) {
+	id[0] = dec[src[0]]<<3 | dec[src[1]]>>2
+	id[1] = dec[src[1]]<<6 | dec[src[2]]<<1 | dec[src[3]]>>4
+	id[2] = dec[src[3]]<<4 | dec[src[4]]>>1
+	id[3] = dec[src[4]]<<7 | dec[src[5]]<<2 | dec[src[6]]>>3
+	id[4] = dec[src[6]]<<5 | dec[src[7]]
+	id[5] = dec[src[8]]<<3 | dec[src[9]]>>2
+	id[6] = dec[src[9]]<<6 | dec[src[10]]<<1 | dec[src[11]]>>4
+	id[7] = dec[src[11]]<<4 | dec[src[12]]>>1
+	id[8] = dec[src[12]]<<7 | dec[src[13]]<<2 | dec[src[14]]>>3
+	id[9] = dec[src[14]]<<5 | dec[src[15]]
+	id[10] = dec[src[16]]<<3 | dec[src[17]]>>2
+	id[11] = dec[src[17]]<<6 | dec[src[18]]<<1 | dec[src[19]]>>4
+}
+
+// Time returns the timestamp part of the id.
+// It's a runtime error to call this method with an invalid id.
+func (id ID) Time() time.Time {
+	// First 4 bytes of ObjectId is 32-bit big-endian seconds from epoch.
+	secs := int64(binary.BigEndian.Uint32(id[0:4]))
+	return time.Unix(secs, 0)
+}
+
+// Machine returns the 3-byte machine id part of the id.
+// It's a runtime error to call this method with an invalid id.
+func (id ID) Machine() []byte {
+	return id[4:7]
+}
+
+// Pid returns the process id part of the id.
+// It's a runtime error to call this method with an invalid id.
+func (id ID) Pid() uint16 {
+	return binary.BigEndian.Uint16(id[7:9])
+}
+
+// Counter returns the incrementing value part of the id.
+// It's a runtime error to call this method with an invalid id.
+func (id ID) Counter() int32 {
+	b := id[9:12]
+	// Counter is stored as big-endian 3-byte value
+	return int32(uint32(b[0])<<16 | uint32(b[1])<<8 | uint32(b[2]))
+}
+
+// Value implements the driver.Valuer interface.
+func (id ID) Value() (driver.Value, error) {
+	b, err := id.MarshalText()
+	return string(b), err
+}
+
+// Scan implements the sql.Scanner interface.
+func (id *ID) Scan(value interface{}) (err error) {
+	switch val := value.(type) {
+	case string:
+		return id.UnmarshalText([]byte(val))
+	case []byte:
+		return id.UnmarshalText(val)
+	default:
+		return fmt.Errorf("xid: scanning unsupported type: %T", value)
+	}
+}

utils/io-limiter.go

@@ -0,0 +1,97 @@
+package utils
+
+import (
+	"context"
+	"io"
+	"time"
+
+	"golang.org/x/time/rate"
+)
+
+const burstLimit = 1000 * 1000 * 1000
+
+type Reader struct {
+	r       io.Reader
+	limiter *rate.Limiter
+	ctx     context.Context
+}
+
+type Writer struct {
+	w       io.Writer
+	limiter *rate.Limiter
+	ctx     context.Context
+}
+
+// NewReader returns a reader that implements io.Reader with rate limiting.
+func NewReader(r io.Reader) *Reader {
+	return &Reader{
+		r:   r,
+		ctx: context.Background(),
+	}
+}
+
+// NewReaderWithContext returns a reader that implements io.Reader with rate limiting.
+func NewReaderWithContext(r io.Reader, ctx context.Context) *Reader {
+	return &Reader{
+		r:   r,
+		ctx: ctx,
+	}
+}
+
+// NewWriter returns a writer that implements io.Writer with rate limiting.
+func NewWriter(w io.Writer) *Writer {
+	return &Writer{
+		w:   w,
+		ctx: context.Background(),
+	}
+}
+
+// NewWriterWithContext returns a writer that implements io.Writer with rate limiting.
+func NewWriterWithContext(w io.Writer, ctx context.Context) *Writer {
+	return &Writer{
+		w:   w,
+		ctx: ctx,
+	}
+}
+
+// SetRateLimit sets rate limit (bytes/sec) to the reader.
+func (s *Reader) SetRateLimit(bytesPerSec float64) {
+	s.limiter = rate.NewLimiter(rate.Limit(bytesPerSec), burstLimit)
+	s.limiter.AllowN(time.Now(), burstLimit) // spend initial burst
+}
+
+// Read reads bytes into p.
+func (s *Reader) Read(p []byte) (int, error) {
+	if s.limiter == nil {
+		return s.r.Read(p)
+	}
+	n, err := s.r.Read(p)
+	if err != nil {
+		return n, err
+	}
+	if err := s.limiter.WaitN(s.ctx, n); err != nil {
+		return n, err
+	}
+	return n, nil
+}
+
+// SetRateLimit sets rate limit (bytes/sec) to the writer.
+func (s *Writer) SetRateLimit(bytesPerSec float64) {
+	s.limiter = rate.NewLimiter(rate.Limit(bytesPerSec), burstLimit)
+	s.limiter.AllowN(time.Now(), burstLimit) // spend initial burst
+}
+
+// Write writes bytes from p.
+func (s *Writer) Write(p []byte) (int, error) {
+	if s.limiter == nil {
+		return s.w.Write(p)
+	}
+	n, err := s.w.Write(p)
+	if err != nil {
+		return n, err
+	}
+	if err := s.limiter.WaitN(s.ctx, n); err != nil {
+		return n, err
+	}
+	return n, err
+}

utils/leakybuf.go

@@ -0,0 +1,45 @@
+// Provides leaky buffer, based on the example in Effective Go.
+package utils
+
+type LeakyBuf struct {
+	bufSize  int // size of each buffer
+	freeList chan []byte
+}
+
+const LeakyBufSize = 2048 // data.len(2) + hmacsha1(10) + data(4096)
+const maxNBuf = 2048
+
+var LeakyBuffer = NewLeakyBuf(maxNBuf, LeakyBufSize)
+
+// NewLeakyBuf creates a leaky buffer which can hold at most n buffer, each
+// with bufSize bytes.
+func NewLeakyBuf(n, bufSize int) *LeakyBuf {
+	return &LeakyBuf{
+		bufSize:  bufSize,
+		freeList: make(chan []byte, n),
+	}
+}
+
+// Get returns a buffer from the leaky buffer or create a new buffer.
+func (lb *LeakyBuf) Get() (b []byte) {
+	select {
+	case b = <-lb.freeList:
+	default:
+		b = make([]byte, lb.bufSize)
+	}
+	return
+}
+
+// Put add the buffer into the free buffer pool for reuse. Panic if the buffer
+// size is not the same with the leaky buffer's. This is intended to expose
+// error usage of leaky buffer.
+func (lb *LeakyBuf) Put(b []byte) {
+	if len(b) != lb.bufSize {
+		panic("invalid buffer size that's put into leaky buffer")
+	}
+	select {
+	case lb.freeList <- b:
+	default:
+	}
+	return
+}

utils/map.go

@@ -0,0 +1,315 @@
+package utils
+
+import (
+	"encoding/json"
+	"sync"
+)
+
+var SHARD_COUNT = 32
+
+// A "thread" safe map of type string:Anything.
+// To avoid lock bottlenecks this map is dived to several (SHARD_COUNT) map shards.
+type ConcurrentMap []*ConcurrentMapShared
+
+// A "thread" safe string to anything map.
+type ConcurrentMapShared struct {
+	items        map[string]interface{}
+	sync.RWMutex // Read Write mutex, guards access to internal map.
+}
+
+// Creates a new concurrent map.
+func NewConcurrentMap() ConcurrentMap {
+	m := make(ConcurrentMap, SHARD_COUNT)
+	for i := 0; i < SHARD_COUNT; i++ {
+		m[i] = &ConcurrentMapShared{items: make(map[string]interface{})}
+	}
+	return m
+}
+
+// Returns shard under given key
+func (m ConcurrentMap) GetShard(key string) *ConcurrentMapShared {
+	return m[uint(fnv32(key))%uint(SHARD_COUNT)]
+}
+
+func (m ConcurrentMap) MSet(data map[string]interface{}) {
+	for key, value := range data {
+		shard := m.GetShard(key)
+		shard.Lock()
+		shard.items[key] = value
+		shard.Unlock()
+	}
+}
+
+// Sets the given value under the specified key.
+func (m ConcurrentMap) Set(key string, value interface{}) {
+	// Get map shard.
+	shard := m.GetShard(key)
+	shard.Lock()
+	shard.items[key] = value
+	shard.Unlock()
+}
+
+// Callback to return new element to be inserted into the map
+// It is called while lock is held, therefore it MUST NOT
+// try to access other keys in same map, as it can lead to deadlock since
+// Go sync.RWLock is not reentrant
+type UpsertCb func(exist bool, valueInMap interface{}, newValue interface{}) interface{}
+
+// Insert or Update - updates existing element or inserts a new one using UpsertCb
+func (m ConcurrentMap) Upsert(key string, value interface{}, cb UpsertCb) (res interface{}) {
+	shard := m.GetShard(key)
+	shard.Lock()
+	v, ok := shard.items[key]
+	res = cb(ok, v, value)
+	shard.items[key] = res
+	shard.Unlock()
+	return res
+}
+
+// Sets the given value under the specified key if no value was associated with it.
+func (m ConcurrentMap) SetIfAbsent(key string, value interface{}) bool {
+	// Get map shard.
+	shard := m.GetShard(key)
+	shard.Lock()
+	_, ok := shard.items[key]
+	if !ok {
+		shard.items[key] = value
+	}
+	shard.Unlock()
+	return !ok
+}
+
+// Retrieves an element from map under given key.
+func (m ConcurrentMap) Get(key string) (interface{}, bool) {
+	// Get shard
+	shard := m.GetShard(key)
+	shard.RLock()
+	// Get item from shard.
+	val, ok := shard.items[key]
+	shard.RUnlock()
+	return val, ok
+}
+
+// Returns the number of elements within the map.
+func (m ConcurrentMap) Count() int {
+	count := 0
+	for i := 0; i < SHARD_COUNT; i++ {
+		shard := m[i]
+		shard.RLock()
+		count += len(shard.items)
+		shard.RUnlock()
+	}
+	return count
+}
+
+// Looks up an item under specified key
+func (m ConcurrentMap) Has(key string) bool {
+	// Get shard
+	shard := m.GetShard(key)
+	shard.RLock()
+	// See if element is within shard.
+	_, ok := shard.items[key]
+	shard.RUnlock()
+	return ok
+}
+
+// Removes an element from the map.
+func (m ConcurrentMap) Remove(key string) {
+	// Try to get shard.
+	shard := m.GetShard(key)
+	shard.Lock()
+	delete(shard.items, key)
+	shard.Unlock()
+}
+
+// Removes an element from the map and returns it
+func (m ConcurrentMap) Pop(key string) (v interface{}, exists bool) {
+	// Try to get shard.
+	shard := m.GetShard(key)
+	shard.Lock()
+	v, exists = shard.items[key]
+	delete(shard.items, key)
+	shard.Unlock()
+	return v, exists
+}
+
+// Checks if map is empty.
+func (m ConcurrentMap) IsEmpty() bool {
+	return m.Count() == 0
+}
+
+// Used by the Iter & IterBuffered functions to wrap two variables together over a channel,
+type Tuple struct {
+	Key string
+	Val interface{}
+}
+
+// Returns an iterator which could be used in a for range loop.
+//
+// Deprecated: using IterBuffered() will get a better performence
+func (m ConcurrentMap) Iter() <-chan Tuple {
+	chans := snapshot(m)
+	ch := make(chan Tuple)
+	go fanIn(chans, ch)
+	return ch
+}
+
+// Returns a buffered iterator which could be used in a for range loop.
+func (m ConcurrentMap) IterBuffered() <-chan Tuple {
+	chans := snapshot(m)
+	total := 0
+	for _, c := range chans {
+		total += cap(c)
+	}
+	ch := make(chan Tuple, total)
+	go fanIn(chans, ch)
+	return ch
+}
+
+// Returns a array of channels that contains elements in each shard,
+// which likely takes a snapshot of `m`.
+// It returns once the size of each buffered channel is determined,
+// before all the channels are populated using goroutines.
+func snapshot(m ConcurrentMap) (chans []chan Tuple) {
+	chans = make([]chan Tuple, SHARD_COUNT)
+	wg := sync.WaitGroup{}
+	wg.Add(SHARD_COUNT)
+	// Foreach shard.
+	for index, shard := range m {
+		go func(index int, shard *ConcurrentMapShared) {
+			// Foreach key, value pair.
+			shard.RLock()
+			chans[index] = make(chan Tuple, len(shard.items))
+			wg.Done()
+			for key, val := range shard.items {
+				chans[index] <- Tuple{key, val}
+			}
+			shard.RUnlock()
+			close(chans[index])
+		}(index, shard)
+	}
+	wg.Wait()
+	return chans
+}
+
+// fanIn reads elements from channels `chans` into channel `out`
+func fanIn(chans []chan Tuple, out chan Tuple) {
+	wg := sync.WaitGroup{}
+	wg.Add(len(chans))
+	for _, ch := range chans {
+		go func(ch chan Tuple) {
+			for t := range ch {
+				out <- t
+			}
+			wg.Done()
+		}(ch)
+	}
+	wg.Wait()
+	close(out)
+}
+
+// Returns all items as map[string]interface{}
+func (m ConcurrentMap) Items() map[string]interface{} {
+	tmp := make(map[string]interface{})
+
+	// Insert items to temporary map.
+	for item := range m.IterBuffered() {
+		tmp[item.Key] = item.Val
+	}
+
+	return tmp
+}
+
+// Iterator callback,called for every key,value found in
+// maps. RLock is held for all calls for a given shard
+// therefore callback sess consistent view of a shard,
+// but not across the shards
+type IterCb func(key string, v interface{})
+
+// Callback based iterator, cheapest way to read
+// all elements in a map.
+func (m ConcurrentMap) IterCb(fn IterCb) {
+	for idx := range m {
+		shard := (m)[idx]
+		shard.RLock()
+		for key, value := range shard.items {
+			fn(key, value)
+		}
+		shard.RUnlock()
+	}
+}
+
+// Return all keys as []string
+func (m ConcurrentMap) Keys() []string {
+	count := m.Count()
+	ch := make(chan string, count)
+	go func() {
+		// Foreach shard.
+		wg := sync.WaitGroup{}
+		wg.Add(SHARD_COUNT)
+		for _, shard := range m {
+			go func(shard *ConcurrentMapShared) {
+				// Foreach key, value pair.
+				shard.RLock()
+				for key := range shard.items {
+					ch <- key
+				}
+				shard.RUnlock()
+				wg.Done()
+			}(shard)
+		}
+		wg.Wait()
+		close(ch)
+	}()
+
+	// Generate keys
+	keys := make([]string, 0, count)
+	for k := range ch {
+		keys = append(keys, k)
+	}
+	return keys
+}
+
+//Reviles ConcurrentMap "private" variables to json marshal.
+func (m ConcurrentMap) MarshalJSON() ([]byte, error) {
+	// Create a temporary map, which will hold all item spread across shards.
+	tmp := make(map[string]interface{})
+
+	// Insert items to temporary map.
+	for item := range m.IterBuffered() {
+		tmp[item.Key] = item.Val
+	}
+	return json.Marshal(tmp)
+}
+
+func fnv32(key string) uint32 {
+	hash := uint32(2166136261)
+	const prime32 = uint32(16777619)
+	for i := 0; i < len(key); i++ {
+		hash *= prime32
+		hash ^= uint32(key[i])
+	}
+	return hash
+}
+
+// Concurrent map uses Interface{} as its value, therefor JSON Unmarshal
+// will probably won't know which to type to unmarshal into, in such case
+// we'll end up with a value of type map[string]interface{}, In most cases this isn't
+// out value type, this is why we've decided to remove this functionality.
+
+// func (m *ConcurrentMap) UnmarshalJSON(b []byte) (err error) {
+// 	// Reverse process of Marshal.
+
+// 	tmp := make(map[string]interface{})
+
+// 	// Unmarshal into a single map.
+// 	if err := json.Unmarshal(b, &tmp); err != nil {
+// 		return nil
+// 	}
+
+// 	// foreach key,value pair in temporary map insert into our concurrent map.
+// 	for key, val := range tmp {
+// 		m.Set(key, val)
+// 	}
+// 	return nil
+// }

utils/serve-channel.go

@@ -0,0 +1,229 @@
+package utils
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"fmt"
+	logger "log"
+	"net"
+	"runtime/debug"
+	"strconv"
+
+	"github.com/snail007/goproxy/services/kcpcfg"
+
+	kcp "github.com/xtaci/kcp-go"
+)
+
+type ServerChannel struct {
+	ip               string
+	port             int
+	Listener         *net.Listener
+	UDPListener      *net.UDPConn
+	errAcceptHandler func(err error)
+	log              *logger.Logger
+}
+
+func NewServerChannel(ip string, port int, log *logger.Logger) ServerChannel {
+	return ServerChannel{
+		ip:   ip,
+		port: port,
+		log:  log,
+		errAcceptHandler: func(err error) {
+			log.Printf("accept error , ERR:%s", err)
+		},
+	}
+}
+func NewServerChannelHost(host string, log *logger.Logger) ServerChannel {
+	h, port, _ := net.SplitHostPort(host)
+	p, _ := strconv.Atoi(port)
+	return ServerChannel{
+		ip:   h,
+		port: p,
+		log:  log,
+		errAcceptHandler: func(err error) {
+			log.Printf("accept error , ERR:%s", err)
+		},
+	}
+}
+func (sc *ServerChannel) SetErrAcceptHandler(fn func(err error)) {
+	sc.errAcceptHandler = fn
+}
+func (sc *ServerChannel) ListenTls(certBytes, keyBytes, caCertBytes []byte, fn func(conn net.Conn)) (err error) {
+	sc.Listener, err = sc.listenTls(sc.ip, sc.port, certBytes, keyBytes, caCertBytes)
+	if err == nil {
+		go func() {
+			defer func() {
+				if e := recover(); e != nil {
+					sc.log.Printf("ListenTls crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+				}
+			}()
+			for {
+				var conn net.Conn
+				conn, err = (*sc.Listener).Accept()
+				if err == nil {
+					go func() {
+						defer func() {
+							if e := recover(); e != nil {
+								sc.log.Printf("tls connection handler crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+							}
+						}()
+						fn(conn)
+					}()
+				} else {
+					sc.errAcceptHandler(err)
+					(*sc.Listener).Close()
+					break
+				}
+			}
+		}()
+	}
+	return
+}
+func (sc *ServerChannel) listenTls(ip string, port int, certBytes, keyBytes, caCertBytes []byte) (ln *net.Listener, err error) {
+
+	var cert tls.Certificate
+	cert, err = tls.X509KeyPair(certBytes, keyBytes)
+	if err != nil {
+		return
+	}
+	clientCertPool := x509.NewCertPool()
+	caBytes := certBytes
+	if caCertBytes != nil {
+		caBytes = caCertBytes
+	}
+	ok := clientCertPool.AppendCertsFromPEM(caBytes)
+	if !ok {
+		err = errors.New("failed to parse root certificate")
+	}
+	config := &tls.Config{
+		ClientCAs:    clientCertPool,
+		Certificates: []tls.Certificate{cert},
+		ClientAuth:   tls.RequireAndVerifyClientCert,
+	}
+	_ln, err := tls.Listen("tcp", fmt.Sprintf("%s:%d", ip, port), config)
+	if err == nil {
+		ln = &_ln
+	}
+	return
+}
+func (sc *ServerChannel) ListenTCP(fn func(conn net.Conn)) (err error) {
+	var l net.Listener
+	l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", sc.ip, sc.port))
+	if err == nil {
+		sc.Listener = &l
+		go func() {
+			defer func() {
+				if e := recover(); e != nil {
+					sc.log.Printf("ListenTCP crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+				}
+			}()
+			for {
+				var conn net.Conn
+				conn, err = (*sc.Listener).Accept()
+				if err == nil {
+					go func() {
+						defer func() {
+							if e := recover(); e != nil {
+								sc.log.Printf("tcp connection handler crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+							}
+						}()
+						fn(conn)
+					}()
+				} else {
+					sc.errAcceptHandler(err)
+					break
+				}
+			}
+		}()
+	}
+	return
+}
+func (sc *ServerChannel) ListenUDP(fn func(packet []byte, localAddr, srcAddr *net.UDPAddr)) (err error) {
+	addr := &net.UDPAddr{IP: net.ParseIP(sc.ip), Port: sc.port}
+	l, err := net.ListenUDP("udp", addr)
+	if err == nil {
+		sc.UDPListener = l
+		go func() {
+			defer func() {
+				if e := recover(); e != nil {
+					sc.log.Printf("ListenUDP crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+				}
+			}()
+			for {
+				var buf = make([]byte, 2048)
+				n, srcAddr, err := (*sc.UDPListener).ReadFromUDP(buf)
+				if err == nil {
+					packet := buf[0:n]
+					go func() {
+						defer func() {
+							if e := recover(); e != nil {
+								sc.log.Printf("udp data handler crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+							}
+						}()
+						fn(packet, addr, srcAddr)
+					}()
+				} else {
+					sc.errAcceptHandler(err)
+					break
+				}
+			}
+		}()
+	}
+	return
+}
+func (sc *ServerChannel) ListenKCP(config kcpcfg.KCPConfigArgs, fn func(conn net.Conn), log *logger.Logger) (err error) {
+	lis, err := kcp.ListenWithOptions(fmt.Sprintf("%s:%d", sc.ip, sc.port), config.Block, *config.DataShard, *config.ParityShard)
+	if err == nil {
+		if err = lis.SetDSCP(*config.DSCP); err != nil {
+			log.Println("SetDSCP:", err)
+			return
+		}
+		if err = lis.SetReadBuffer(*config.SockBuf); err != nil {
+			log.Println("SetReadBuffer:", err)
+			return
+		}
+		if err = lis.SetWriteBuffer(*config.SockBuf); err != nil {
+			log.Println("SetWriteBuffer:", err)
+			return
+		}
+		sc.Listener = new(net.Listener)
+		*sc.Listener = lis
+		go func() {
+			defer func() {
+				if e := recover(); e != nil {
+					sc.log.Printf("ListenKCP crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+				}
+			}()
+			for {
+				//var conn net.Conn
+				conn, err := lis.AcceptKCP()
+				if err == nil {
+					go func() {
+						defer func() {
+							if e := recover(); e != nil {
+								sc.log.Printf("kcp connection handler crashed , err : %s , \ntrace:%s", e, string(debug.Stack()))
+							}
+						}()
+						conn.SetStreamMode(true)
+						conn.SetWriteDelay(true)
+						conn.SetNoDelay(*config.NoDelay, *config.Interval, *config.Resend, *config.NoCongestion)
+						conn.SetMtu(*config.MTU)
+						conn.SetWindowSize(*config.SndWnd, *config.RcvWnd)
+						conn.SetACKNoDelay(*config.AckNodelay)
+						if *config.NoComp {
+							fn(conn)
+						} else {
+							cconn := NewCompStream(conn)
+							fn(cconn)
+						}
+					}()
+				} else {
+					sc.errAcceptHandler(err)
+					break
+				}
+			}
+		}()
+	}
+	return
+}

utils/sni/sni.go

@@ -0,0 +1,173 @@
+package sni
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"io"
+	"net"
+)
+
+func ServerNameFromBytes(data []byte) (sn string, err error) {
+	reader := bytes.NewReader(data)
+	bufferedReader := bufio.NewReader(reader)
+	c := bufferedConn{bufferedReader, nil, nil}
+	sn, _, err = ServerNameFromConn(c)
+	return
+}
+
+type bufferedConn struct {
+	r    *bufio.Reader
+	rout io.Reader
+	net.Conn
+}
+
+func newBufferedConn(c net.Conn) bufferedConn {
+	return bufferedConn{bufio.NewReader(c), nil, c}
+}
+
+func (b bufferedConn) Peek(n int) ([]byte, error) {
+	return b.r.Peek(n)
+}
+
+func (b bufferedConn) Read(p []byte) (int, error) {
+	if b.rout != nil {
+		return b.rout.Read(p)
+	}
+	return b.r.Read(p)
+}
+
+var malformedError = errors.New("malformed client hello")
+
+func getHello(b []byte) (string, error) {
+	rest := b[5:]
+
+	if len(rest) == 0 {
+		return "", malformedError
+	}
+
+	current := 0
+	handshakeType := rest[0]
+	current += 1
+	if handshakeType != 0x1 {
+		return "", errors.New("Not a ClientHello")
+	}
+
+	// Skip over another length
+	current += 3
+	// Skip over protocolversion
+	current += 2
+	// Skip over random number
+	current += 4 + 28
+
+	if current > len(rest) {
+		return "", malformedError
+	}
+
+	// Skip over session ID
+	sessionIDLength := int(rest[current])
+	current += 1
+	current += sessionIDLength
+
+	if current+1 > len(rest) {
+		return "", malformedError
+	}
+
+	cipherSuiteLength := (int(rest[current]) << 8) + int(rest[current+1])
+	current += 2
+	current += cipherSuiteLength
+
+	if current > len(rest) {
+		return "", malformedError
+	}
+	compressionMethodLength := int(rest[current])
+	current += 1
+	current += compressionMethodLength
+
+	if current > len(rest) {
+		return "", errors.New("no extensions")
+	}
+
+	current += 2
+
+	hostname := ""
+	for current+4 < len(rest) && hostname == "" {
+		extensionType := (int(rest[current]) << 8) + int(rest[current+1])
+		current += 2
+
+		extensionDataLength := (int(rest[current]) << 8) + int(rest[current+1])
+		current += 2
+
+		if extensionType == 0 {
+
+			// Skip over number of names as we're assuming there's just one
+			current += 2
+			if current > len(rest) {
+				return "", malformedError
+			}
+
+			nameType := rest[current]
+			current += 1
+			if nameType != 0 {
+				return "", errors.New("Not a hostname")
+			}
+			if current+1 > len(rest) {
+				return "", malformedError
+			}
+			nameLen := (int(rest[current]) << 8) + int(rest[current+1])
+			current += 2
+			if current+nameLen > len(rest) {
+				return "", malformedError
+			}
+			hostname = string(rest[current : current+nameLen])
+		}
+
+		current += extensionDataLength
+	}
+	if hostname == "" {
+		return "", errors.New("No hostname")
+	}
+	return hostname, nil
+
+}
+
+func getHelloBytes(c bufferedConn) ([]byte, error) {
+	b, err := c.Peek(5)
+	if err != nil {
+		return []byte{}, err
+	}
+
+	if b[0] != 0x16 {
+		return []byte{}, errors.New("not TLS")
+	}
+
+	restLengthBytes := b[3:]
+	restLength := (int(restLengthBytes[0]) << 8) + int(restLengthBytes[1])
+
+	return c.Peek(5 + restLength)
+
+}
+
+func getServername(c bufferedConn) (string, []byte, error) {
+	all, err := getHelloBytes(c)
+	if err != nil {
+		return "", nil, err
+	}
+	name, err := getHello(all)
+	if err != nil {
+		return "", nil, err
+	}
+	return name, all, err
+
+}
+
+// Uses SNI to get the name of the server from the connection. Returns the ServerName and a buffered connection that will not have been read off of.
+func ServerNameFromConn(c net.Conn) (string, net.Conn, error) {
+	bufconn := newBufferedConn(c)
+	sn, helloBytes, err := getServername(bufconn)
+	if err != nil {
+		return "", nil, err
+	}
+	bufconn.rout = io.MultiReader(bytes.NewBuffer(helloBytes), c)
+	return sn, bufconn, nil
+}

utils/socks/client.go

@@ -0,0 +1,253 @@
+package socks
+
+import (
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+	"time"
+)
+
+var socks5Errors = []string{
+	"",
+	"general failure",
+	"connection forbidden",
+	"network unreachable",
+	"host unreachable",
+	"connection refused",
+	"TTL expired",
+	"command not supported",
+	"address type not supported",
+}
+
+type Auth struct {
+	User, Password string
+}
+type ClientConn struct {
+	user     string
+	password string
+	conn     *net.Conn
+	header   []byte
+	timeout  time.Duration
+	addr     string
+	network  string
+	UDPAddr  string
+}
+
+// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
+// with an optional username and password. See RFC 1928 and RFC 1929.
+// target must be a canonical address with a host and port.
+// network : tcp udp
+func NewClientConn(conn *net.Conn, network, target string, timeout time.Duration, auth *Auth, header []byte) *ClientConn {
+	s := &ClientConn{
+		conn:    conn,
+		network: network,
+		timeout: timeout,
+	}
+	if auth != nil {
+		s.user = auth.User
+		s.password = auth.Password
+	}
+	if header != nil && len(header) > 0 {
+		s.header = header
+	}
+	if network == "udp" && target == "" {
+		target = "0.0.0.0:1"
+	}
+	s.addr = target
+	return s
+}
+
+// connect takes an existing connection to a socks5 proxy server,
+// and commands the server to extend that connection to target,
+// which must be a canonical address with a host and port.
+func (s *ClientConn) Handshake() error {
+	host, portStr, err := net.SplitHostPort(s.addr)
+	if err != nil {
+		return err
+	}
+	port, err := strconv.Atoi(portStr)
+	if err != nil {
+		return errors.New("proxy: failed to parse port number: " + portStr)
+	}
+	if port < 1 || port > 0xffff {
+		return errors.New("proxy: port number out of range: " + portStr)
+	}
+
+	if err := s.handshake(host); err != nil {
+		return err
+	}
+	buf := []byte{}
+	if s.network == "tcp" {
+		buf = append(buf, VERSION_V5, CMD_CONNECT, 0 /* reserved */)
+
+	} else {
+		buf = append(buf, VERSION_V5, CMD_ASSOCIATE, 0 /* reserved */)
+	}
+	if ip := net.ParseIP(host); ip != nil {
+		if ip4 := ip.To4(); ip4 != nil {
+			buf = append(buf, ATYP_IPV4)
+			ip = ip4
+		} else {
+			buf = append(buf, ATYP_IPV6)
+		}
+		buf = append(buf, ip...)
+	} else {
+		if len(host) > 255 {
+			return errors.New("proxy: destination host name too long: " + host)
+		}
+		buf = append(buf, ATYP_DOMAIN)
+		buf = append(buf, byte(len(host)))
+		buf = append(buf, host...)
+	}
+	buf = append(buf, byte(port>>8), byte(port))
+	(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+	if _, err := (*s.conn).Write(buf); err != nil {
+		return errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	(*s.conn).SetDeadline(time.Time{})
+	(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+	if _, err := io.ReadFull((*s.conn), buf[:4]); err != nil {
+		return errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	(*s.conn).SetDeadline(time.Time{})
+	failure := "unknown error"
+	if int(buf[1]) < len(socks5Errors) {
+		failure = socks5Errors[buf[1]]
+	}
+
+	if len(failure) > 0 {
+		return errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
+	}
+
+	bytesToDiscard := 0
+	switch buf[3] {
+	case ATYP_IPV4:
+		bytesToDiscard = net.IPv4len
+	case ATYP_IPV6:
+		bytesToDiscard = net.IPv6len
+	case ATYP_DOMAIN:
+		(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+		_, err := io.ReadFull((*s.conn), buf[:1])
+		(*s.conn).SetDeadline(time.Time{})
+		if err != nil {
+			return errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+		bytesToDiscard = int(buf[0])
+	default:
+		return errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
+	}
+
+	if cap(buf) < bytesToDiscard {
+		buf = make([]byte, bytesToDiscard)
+	} else {
+		buf = buf[:bytesToDiscard]
+	}
+	(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+	if _, err := io.ReadFull((*s.conn), buf); err != nil {
+		return errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	(*s.conn).SetDeadline(time.Time{})
+	var ip net.IP
+	ip = buf
+	ipStr := ""
+	if bytesToDiscard == net.IPv4len || bytesToDiscard == net.IPv6len {
+		if ipv4 := ip.To4(); ipv4 != nil {
+			ipStr = ipv4.String()
+		} else {
+			ipStr = ip.To16().String()
+		}
+	}
+	//log.Printf("%v", ipStr)
+	// Also need to discard the port number
+	(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+	if _, err := io.ReadFull((*s.conn), buf[:2]); err != nil {
+		return errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	p := binary.BigEndian.Uint16([]byte{buf[0], buf[1]})
+	//log.Printf("%v", p)
+	s.UDPAddr = net.JoinHostPort(ipStr, fmt.Sprintf("%d", p))
+	//log.Printf("%v", s.udpAddr)
+	(*s.conn).SetDeadline(time.Time{})
+	return nil
+}
+func (s *ClientConn) SendUDP(data []byte, addr string) (respData []byte, err error) {
+
+	c, err := net.DialTimeout("udp", s.UDPAddr, s.timeout)
+	if err != nil {
+		return
+	}
+	conn := c.(*net.UDPConn)
+
+	p := NewPacketUDP()
+	p.Build(addr, data)
+	conn.SetDeadline(time.Now().Add(s.timeout))
+	conn.Write(p.Bytes())
+	conn.SetDeadline(time.Time{})
+
+	buf := make([]byte, 1024)
+	conn.SetDeadline(time.Now().Add(s.timeout))
+	n, _, err := conn.ReadFrom(buf)
+	conn.SetDeadline(time.Time{})
+	if err != nil {
+		return
+	}
+	respData = buf[:n]
+	return
+}
+func (s *ClientConn) handshake(host string) error {
+
+	// the size here is just an estimate
+	buf := make([]byte, 0, 6+len(host))
+
+	buf = append(buf, VERSION_V5)
+	if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
+		buf = append(buf, 2 /* num auth methods */, Method_NO_AUTH, Method_USER_PASS)
+	} else {
+		buf = append(buf, 1 /* num auth methods */, Method_NO_AUTH)
+	}
+	(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+	if _, err := (*s.conn).Write(buf); err != nil {
+		return errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	(*s.conn).SetDeadline(time.Time{})
+
+	(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+	if _, err := io.ReadFull((*s.conn), buf[:2]); err != nil {
+		return errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	(*s.conn).SetDeadline(time.Time{})
+
+	if buf[0] != 5 {
+		return errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
+	}
+	if buf[1] == 0xff {
+		return errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
+	}
+
+	// See RFC 1929
+	if buf[1] == Method_USER_PASS {
+		buf = buf[:0]
+		buf = append(buf, 1 /* password protocol version */)
+		buf = append(buf, uint8(len(s.user)))
+		buf = append(buf, s.user...)
+		buf = append(buf, uint8(len(s.password)))
+		buf = append(buf, s.password...)
+		(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+		if _, err := (*s.conn).Write(buf); err != nil {
+			return errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+		(*s.conn).SetDeadline(time.Time{})
+		(*s.conn).SetDeadline(time.Now().Add(s.timeout))
+		if _, err := io.ReadFull((*s.conn), buf[:2]); err != nil {
+			return errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+		(*s.conn).SetDeadline(time.Time{})
+		if buf[1] != 0 {
+			return errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
+		}
+	}
+	return nil
+}

utils/socks/server.go

@@ -0,0 +1,252 @@
+package socks
+
+import (
+	"fmt"
+	"net"
+	"strings"
+	"time"
+
+	"github.com/snail007/goproxy/utils"
+)
+
+const (
+	Method_NO_AUTH         = uint8(0x00)
+	Method_GSSAPI          = uint8(0x01)
+	Method_USER_PASS       = uint8(0x02)
+	Method_IANA            = uint8(0x7F)
+	Method_RESVERVE        = uint8(0x80)
+	Method_NONE_ACCEPTABLE = uint8(0xFF)
+	VERSION_V5             = uint8(0x05)
+	CMD_CONNECT            = uint8(0x01)
+	CMD_BIND               = uint8(0x02)
+	CMD_ASSOCIATE          = uint8(0x03)
+	ATYP_IPV4              = uint8(0x01)
+	ATYP_DOMAIN            = uint8(0x03)
+	ATYP_IPV6              = uint8(0x04)
+	REP_SUCCESS            = uint8(0x00)
+	REP_REQ_FAIL           = uint8(0x01)
+	REP_RULE_FORBIDDEN     = uint8(0x02)
+	REP_NETWOR_UNREACHABLE = uint8(0x03)
+	REP_HOST_UNREACHABLE   = uint8(0x04)
+	REP_CONNECTION_REFUSED = uint8(0x05)
+	REP_TTL_TIMEOUT        = uint8(0x06)
+	REP_CMD_UNSUPPORTED    = uint8(0x07)
+	REP_ATYP_UNSUPPORTED   = uint8(0x08)
+	REP_UNKNOWN            = uint8(0x09)
+	RSV                    = uint8(0x00)
+)
+
+var (
+	ZERO_IP   = []byte{0x00, 0x00, 0x00, 0x00}
+	ZERO_PORT = []byte{0x00, 0x00}
+)
+
+type ServerConn struct {
+	target   string
+	user     string
+	password string
+	conn     *net.Conn
+	timeout  time.Duration
+	auth     *utils.BasicAuth
+	header   []byte
+	ver      uint8
+	//method
+	methodsCount uint8
+	methods      []uint8
+	method       uint8
+	//request
+	cmd             uint8
+	reserve         uint8
+	addressType     uint8
+	dstAddr         string
+	dstPort         string
+	dstHost         string
+	UDPConnListener *net.UDPConn
+	enableUDP       bool
+	udpIP           string
+}
+
+func NewServerConn(conn *net.Conn, timeout time.Duration, auth *utils.BasicAuth, enableUDP bool, udpHost string, header []byte) *ServerConn {
+
+	s := &ServerConn{
+		conn:      conn,
+		timeout:   timeout,
+		auth:      auth,
+		header:    header,
+		ver:       VERSION_V5,
+		enableUDP: enableUDP,
+		udpIP:     udpHost,
+	}
+	return s
+
+}
+func (s *ServerConn) Close() {
+	utils.CloseConn(s.conn)
+}
+func (s *ServerConn) AuthData() Auth {
+	return Auth{s.user, s.password}
+}
+func (s *ServerConn) IsUDP() bool {
+	return s.cmd == CMD_ASSOCIATE
+}
+func (s *ServerConn) IsTCP() bool {
+	return s.cmd == CMD_CONNECT
+}
+func (s *ServerConn) Method() uint8 {
+	return s.method
+}
+func (s *ServerConn) Target() string {
+	return s.target
+}
+func (s *ServerConn) Handshake() (err error) {
+	remoteAddr := (*s.conn).RemoteAddr()
+	//协商开始
+	//method select request
+	var methodReq MethodsRequest
+	(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+
+	methodReq, e := NewMethodsRequest((*s.conn), s.header)
+	(*s.conn).SetReadDeadline(time.Time{})
+	if e != nil {
+		(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+		methodReq.Reply(Method_NONE_ACCEPTABLE)
+		(*s.conn).SetReadDeadline(time.Time{})
+		err = fmt.Errorf("new methods request fail,ERR: %s", e)
+		return
+	}
+	//log.Printf("%v,s.auth == %v && methodReq.Select(Method_NO_AUTH) %v", methodReq.methods, s.auth, methodReq.Select(Method_NO_AUTH))
+	if s.auth == nil && methodReq.Select(Method_NO_AUTH) && !methodReq.Select(Method_USER_PASS) {
+		// if !methodReq.Select(Method_NO_AUTH) {
+		// 	(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+		// 	methodReq.Reply(Method_NONE_ACCEPTABLE)
+		// 	(*s.conn).SetReadDeadline(time.Time{})
+		// 	err = fmt.Errorf("none method found : Method_NO_AUTH")
+		// 	return
+		// }
+		s.method = Method_NO_AUTH
+		//method select reply
+		(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+		err = methodReq.Reply(Method_NO_AUTH)
+		(*s.conn).SetReadDeadline(time.Time{})
+		if err != nil {
+			err = fmt.Errorf("reply answer data fail,ERR: %s", err)
+			return
+		}
+		// err = fmt.Errorf("% x", methodReq.Bytes())
+	} else {
+		//auth
+		if !methodReq.Select(Method_USER_PASS) {
+			(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+			methodReq.Reply(Method_NONE_ACCEPTABLE)
+			(*s.conn).SetReadDeadline(time.Time{})
+			err = fmt.Errorf("none method found : Method_USER_PASS")
+			return
+		}
+		s.method = Method_USER_PASS
+		//method reply need auth
+		(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+		err = methodReq.Reply(Method_USER_PASS)
+		(*s.conn).SetReadDeadline(time.Time{})
+		if err != nil {
+			err = fmt.Errorf("reply answer data fail,ERR: %s", err)
+			return
+		}
+		//read auth
+		buf := make([]byte, 500)
+		var n int
+		(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+		n, err = (*s.conn).Read(buf)
+		(*s.conn).SetReadDeadline(time.Time{})
+		if err != nil {
+			err = fmt.Errorf("read auth info fail,ERR: %s", err)
+			return
+		}
+		r := buf[:n]
+		s.user = string(r[2 : r[1]+2])
+		s.password = string(r[2+r[1]+1:])
+		//err = fmt.Errorf("user:%s,pass:%s", user, pass)
+		//auth
+		_addr := strings.Split(remoteAddr.String(), ":")
+		if s.auth == nil || s.auth.CheckUserPass(s.user, s.password, _addr[0], "") {
+			(*s.conn).SetDeadline(time.Now().Add(time.Millisecond * time.Duration(s.timeout)))
+			_, err = (*s.conn).Write([]byte{0x01, 0x00})
+			(*s.conn).SetDeadline(time.Time{})
+			if err != nil {
+				err = fmt.Errorf("answer auth success to %s fail,ERR: %s", remoteAddr, err)
+				return
+			}
+		} else {
+			(*s.conn).SetDeadline(time.Now().Add(time.Millisecond * time.Duration(s.timeout)))
+			_, err = (*s.conn).Write([]byte{0x01, 0x01})
+			(*s.conn).SetDeadline(time.Time{})
+			if err != nil {
+				err = fmt.Errorf("answer auth fail to %s fail,ERR: %s", remoteAddr, err)
+				return
+			}
+			err = fmt.Errorf("auth fail from %s", remoteAddr)
+			return
+		}
+	}
+	//request detail
+	(*s.conn).SetReadDeadline(time.Now().Add(time.Second * s.timeout))
+	request, e := NewRequest(*s.conn)
+	(*s.conn).SetReadDeadline(time.Time{})
+	if e != nil {
+		err = fmt.Errorf("read request data fail,ERR: %s", e)
+		return
+	}
+	//协商结束
+
+	switch request.CMD() {
+	case CMD_BIND:
+		err = request.TCPReply(REP_UNKNOWN)
+		if err != nil {
+			err = fmt.Errorf("TCPReply REP_UNKNOWN to %s fail,ERR: %s", remoteAddr, err)
+			return
+		}
+		err = fmt.Errorf("cmd bind not supported, form: %s", remoteAddr)
+		return
+	case CMD_CONNECT:
+		err = request.TCPReply(REP_SUCCESS)
+		if err != nil {
+			err = fmt.Errorf("TCPReply REP_SUCCESS to %s fail,ERR: %s", remoteAddr, err)
+			return
+		}
+	case CMD_ASSOCIATE:
+		if !s.enableUDP {
+			request.UDPReply(REP_UNKNOWN, "0.0.0.0:0")
+			if err != nil {
+				err = fmt.Errorf("UDPReply REP_UNKNOWN to %s fail,ERR: %s", remoteAddr, err)
+				return
+			}
+			err = fmt.Errorf("cmd associate not supported, form: %s", remoteAddr)
+			return
+		}
+		a, _ := net.ResolveUDPAddr("udp", ":0")
+		s.UDPConnListener, err = net.ListenUDP("udp", a)
+		if err != nil {
+			request.UDPReply(REP_UNKNOWN, "0.0.0.0:0")
+			err = fmt.Errorf("udp bind fail,ERR: %s , for %s", err, remoteAddr)
+			return
+		}
+		_, port, _ := net.SplitHostPort(s.UDPConnListener.LocalAddr().String())
+		err = request.UDPReply(REP_SUCCESS, net.JoinHostPort(s.udpIP, port))
+		if err != nil {
+			err = fmt.Errorf("UDPReply REP_SUCCESS to %s fail,ERR: %s", remoteAddr, err)
+			return
+		}
+
+	}
+
+	//fill socks info
+	s.target = request.Addr()
+	s.methodsCount = methodReq.MethodsCount()
+	s.methods = methodReq.Methods()
+	s.cmd = request.CMD()
+	s.reserve = request.reserve
+	s.addressType = request.addressType
+	s.dstAddr = request.dstAddr
+	s.dstHost = request.dstHost
+	s.dstPort = request.dstPort
+	return
+}

utils/socks/structs.go

@@ -0,0 +1,342 @@
+package socks
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+)
+
+type Request struct {
+	ver         uint8
+	cmd         uint8
+	reserve     uint8
+	addressType uint8
+	dstAddr     string
+	dstPort     string
+	dstHost     string
+	bytes       []byte
+	rw          io.ReadWriter
+}
+
+func NewRequest(rw io.ReadWriter, header ...[]byte) (req Request, err interface{}) {
+	var b = make([]byte, 1024)
+	var n int
+	req = Request{rw: rw}
+	if header != nil && len(header) == 1 && len(header[0]) > 1 {
+		b = header[0]
+		n = len(header[0])
+	} else {
+		n, err = rw.Read(b[:])
+		if err != nil {
+			err = fmt.Errorf("read req data fail,ERR: %s", err)
+			return
+		}
+	}
+	req.ver = uint8(b[0])
+	req.cmd = uint8(b[1])
+	req.reserve = uint8(b[2])
+	req.addressType = uint8(b[3])
+	if b[0] != 0x5 {
+		err = fmt.Errorf("sosck version supported")
+		req.TCPReply(REP_REQ_FAIL)
+		return
+	}
+	switch b[3] {
+	case 0x01: //IP V4
+		req.dstHost = net.IPv4(b[4], b[5], b[6], b[7]).String()
+	case 0x03: //域名
+		req.dstHost = string(b[5 : n-2]) //b[4]表示域名的长度
+	case 0x04: //IP V6
+		req.dstHost = net.IP{b[4], b[5], b[6], b[7], b[8], b[9], b[10], b[11], b[12], b[13], b[14], b[15], b[16], b[17], b[18], b[19]}.String()
+	}
+	req.dstPort = strconv.Itoa(int(b[n-2])<<8 | int(b[n-1]))
+	req.dstAddr = net.JoinHostPort(req.dstHost, req.dstPort)
+	req.bytes = b[:n]
+	return
+}
+func (s *Request) Bytes() []byte {
+	return s.bytes
+}
+func (s *Request) Addr() string {
+	return s.dstAddr
+}
+func (s *Request) Host() string {
+	return s.dstHost
+}
+func (s *Request) Port() string {
+	return s.dstPort
+}
+func (s *Request) AType() uint8 {
+	return s.addressType
+}
+func (s *Request) CMD() uint8 {
+	return s.cmd
+}
+
+func (s *Request) TCPReply(rep uint8) (err error) {
+	_, err = s.rw.Write(s.NewReply(rep, "0.0.0.0:0"))
+	return
+}
+func (s *Request) UDPReply(rep uint8, addr string) (err error) {
+	_, err = s.rw.Write(s.NewReply(rep, addr))
+	return
+}
+func (s *Request) NewReply(rep uint8, addr string) []byte {
+	var response bytes.Buffer
+	host, port, _ := net.SplitHostPort(addr)
+	ip := net.ParseIP(host)
+	ipb := ip.To4()
+	atyp := ATYP_IPV4
+	ipv6 := ip.To16()
+	zeroiIPv6 := fmt.Sprintf("%d%d%d%d%d%d%d%d%d%d%d%d",
+		ipv6[0], ipv6[1], ipv6[2], ipv6[3],
+		ipv6[4], ipv6[5], ipv6[6], ipv6[7],
+		ipv6[8], ipv6[9], ipv6[10], ipv6[11],
+	)
+	if ipb == nil && ipv6 != nil && "0000000000255255" != zeroiIPv6 {
+		atyp = ATYP_IPV6
+		ipb = ip.To16()
+	}
+	porti, _ := strconv.Atoi(port)
+	portb := make([]byte, 2)
+	binary.BigEndian.PutUint16(portb, uint16(porti))
+	// log.Printf("atyp : %v", atyp)
+	// log.Printf("ip : %v", []byte(ip))
+	response.WriteByte(VERSION_V5)
+	response.WriteByte(rep)
+	response.WriteByte(RSV)
+	response.WriteByte(atyp)
+	response.Write(ipb)
+	response.Write(portb)
+	return response.Bytes()
+}
+
+type MethodsRequest struct {
+	ver          uint8
+	methodsCount uint8
+	methods      []uint8
+	bytes        []byte
+	rw           *io.ReadWriter
+}
+
+func NewMethodsRequest(r io.ReadWriter, header ...[]byte) (s MethodsRequest, err interface{}) {
+	defer func() {
+		if err == nil {
+			err = recover()
+		}
+	}()
+	s = MethodsRequest{}
+	s.rw = &r
+	var buf = make([]byte, 300)
+	var n int
+	if header != nil && len(header) == 1 && len(header[0]) > 1 {
+		buf = header[0]
+		n = len(header[0])
+	} else {
+		n, err = r.Read(buf)
+		if err != nil {
+			return
+		}
+	}
+	if buf[0] != 0x05 {
+		err = fmt.Errorf("socks version not supported")
+		return
+	}
+	if n != int(buf[1])+int(2) {
+		err = fmt.Errorf("socks methods data length error")
+		return
+	}
+	s.ver = buf[0]
+	s.methodsCount = buf[1]
+	s.methods = buf[2:n]
+	s.bytes = buf[:n]
+	return
+}
+func (s *MethodsRequest) Version() uint8 {
+	return s.ver
+}
+func (s *MethodsRequest) MethodsCount() uint8 {
+	return s.methodsCount
+}
+func (s *MethodsRequest) Methods() []uint8 {
+	return s.methods
+}
+func (s *MethodsRequest) Select(method uint8) bool {
+	for _, m := range s.methods {
+		if m == method {
+			return true
+		}
+	}
+	return false
+}
+func (s *MethodsRequest) Reply(method uint8) (err error) {
+	_, err = (*s.rw).Write([]byte{byte(VERSION_V5), byte(method)})
+	return
+}
+func (s *MethodsRequest) Bytes() []byte {
+	return s.bytes
+}
+
+func ParseUDPPacket(b []byte) (p UDPPacket, err error) {
+	p = UDPPacket{}
+	p.frag = uint8(b[2])
+	p.bytes = b
+	if p.frag != 0 {
+		err = fmt.Errorf("FRAG only support for 0 , %v ,%v", p.frag, b[:4])
+		return
+	}
+	portIndex := 0
+	p.atype = b[3]
+	switch p.atype {
+	case ATYP_IPV4: //IP V4
+		p.dstHost = net.IPv4(b[4], b[5], b[6], b[7]).String()
+		portIndex = 8
+	case ATYP_DOMAIN: //域名
+		domainLen := uint8(b[4])
+		p.dstHost = string(b[5 : 5+domainLen]) //b[4]表示域名的长度
+		portIndex = int(5 + domainLen)
+	case ATYP_IPV6: //IP V6
+		p.dstHost = net.IP{b[4], b[5], b[6], b[7], b[8], b[9], b[10], b[11], b[12], b[13], b[14], b[15], b[16], b[17], b[18], b[19]}.String()
+		portIndex = 20
+	}
+	p.dstPort = strconv.Itoa(int(b[portIndex])<<8 | int(b[portIndex+1]))
+	p.data = b[portIndex+2:]
+	p.header = b[:portIndex+2]
+	return
+}
+
+type UDPPacket struct {
+	rsv     uint16
+	frag    uint8
+	atype   uint8
+	dstHost string
+	dstPort string
+	data    []byte
+	header  []byte
+	bytes   []byte
+}
+
+func (s *UDPPacket) Header() []byte {
+	return s.header
+}
+func (s *UDPPacket) NewReply(data []byte) []byte {
+	var buf bytes.Buffer
+	buf.Write(s.header)
+	buf.Write(data)
+	return buf.Bytes()
+}
+func (s *UDPPacket) Host() string {
+	return s.dstHost
+}
+
+func (s *UDPPacket) Port() string {
+	return s.dstPort
+}
+func (s *UDPPacket) Data() []byte {
+	return s.data
+}
+
+type PacketUDP struct {
+	rsv     uint16
+	frag    uint8
+	atype   uint8
+	dstHost string
+	dstPort string
+	data    []byte
+}
+
+func NewPacketUDP() (p PacketUDP) {
+	return PacketUDP{}
+}
+func (p *PacketUDP) Build(destAddr string, data []byte) (err error) {
+	host, port, err := net.SplitHostPort(destAddr)
+	if err != nil {
+		return
+	}
+	p.rsv = 0
+	p.frag = 0
+	p.dstHost = host
+	p.dstPort = port
+	p.atype = ATYP_IPV4
+	if ip := net.ParseIP(host); ip != nil {
+		if ip4 := ip.To4(); ip4 != nil {
+			p.atype = ATYP_IPV4
+			ip = ip4
+		} else {
+			p.atype = ATYP_IPV6
+		}
+	} else {
+		if len(host) > 255 {
+			err = errors.New("proxy: destination host name too long: " + host)
+			return
+		}
+		p.atype = ATYP_DOMAIN
+	}
+	p.data = data
+
+	return
+}
+func (p *PacketUDP) Parse(b []byte) (err error) {
+	p.frag = uint8(b[2])
+	if p.frag != 0 {
+		err = fmt.Errorf("FRAG only support for 0 , %v ,%v", p.frag, b[:4])
+		return
+	}
+	portIndex := 0
+	p.atype = b[3]
+	switch p.atype {
+	case ATYP_IPV4: //IP V4
+		p.dstHost = net.IPv4(b[4], b[5], b[6], b[7]).String()
+		portIndex = 8
+	case ATYP_DOMAIN: //域名
+		domainLen := uint8(b[4])
+		p.dstHost = string(b[5 : 5+domainLen]) //b[4]表示域名的长度
+		portIndex = int(5 + domainLen)
+	case ATYP_IPV6: //IP V6
+		p.dstHost = net.IP{b[4], b[5], b[6], b[7], b[8], b[9], b[10], b[11], b[12], b[13], b[14], b[15], b[16], b[17], b[18], b[19]}.String()
+		portIndex = 20
+	}
+	p.dstPort = strconv.Itoa(int(b[portIndex])<<8 | int(b[portIndex+1]))
+	p.data = b[portIndex+2:]
+	return
+}
+func (p *PacketUDP) Header() []byte {
+	header := new(bytes.Buffer)
+	header.Write([]byte{0x00, 0x00, p.frag, p.atype})
+	if p.atype == ATYP_IPV4 {
+		ip := net.ParseIP(p.dstHost)
+		header.Write(ip.To4())
+	} else if p.atype == ATYP_IPV6 {
+		ip := net.ParseIP(p.dstHost)
+		header.Write(ip.To16())
+	} else if p.atype == ATYP_DOMAIN {
+		hBytes := []byte(p.dstHost)
+		header.WriteByte(byte(len(hBytes)))
+		header.Write(hBytes)
+	}
+	port, _ := strconv.ParseUint(p.dstPort, 10, 64)
+	portBytes := new(bytes.Buffer)
+	binary.Write(portBytes, binary.BigEndian, port)
+	header.Write(portBytes.Bytes()[portBytes.Len()-2:])
+	return header.Bytes()
+}
+func (p *PacketUDP) Bytes() []byte {
+	packBytes := new(bytes.Buffer)
+	packBytes.Write(p.Header())
+	packBytes.Write(p.data)
+	return packBytes.Bytes()
+}
+func (p *PacketUDP) Host() string {
+	return p.dstHost
+}
+
+func (p *PacketUDP) Port() string {
+	return p.dstPort
+}
+func (p *PacketUDP) Data() []byte {
+	return p.data
+}