diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9a39257
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,95 @@
+# Created by .ignore support plugin (hsz.mobi)
+### Scala template
+*.class
+*.log
+
+# sbt specific
+.cache
+.history
+.lib/
+dist/*
+target
+lib_managed/
+src_managed/
+project/boot/
+project/plugins/project/
+
+# Scala-IDE specific
+.scala_dependencies
+.worksheet
+
+# ENSIME specific
+.ensime_cache/
+.ensime
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+### SBT template
+# Simple Build Tool
+# http://www.scala-sbt.org/release/docs/Getting-Started/Directories.html#configuring-version-control
+
+### Android template
+# Built application files
+*.apk
+*.ap_
+
+# Files for the ART/Dalvik VM
+*.dex
+
+# Java class files
+
+# Generated files
+bin/
+gen/
+out/
+
+# Gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+
+# Android Studio Navigation editor temp files
+.navigation/
+
+# Android Studio captures folder
+captures/
+
+# Intellij
+.idea/
+proguard-sbt.txt
+
+# Keystore files
+*.jks
+
+# External native build folder generated in Android Studio 2.2 and later
+.externalNativeBuild
+
+/.deps/
+/src/main/libs
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f0ce053
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,8 @@
+[submodule "src/go"]
+ path = src/go
+ url = https://github.com/shadowsocks/go.git
+ branch = shadowsocks
+[submodule "src/kcptun"]
+ path = src/kcptun
+ url = https://github.com/shadowsocks/kcptun.git
+ branch = shadowsocks
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..e963df8
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,622 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
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+ To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights. Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+ For example, if you distribute copies of such a program, whether
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+freedoms that you received. You must make sure that they, too, receive
+or can get the source code. And you must show them these terms so they
+know their rights.
+
+ Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
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+authors' sake, the GPL requires that modified versions be marked as
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+authors of previous versions.
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+ Some devices are designed to deny users access to install or run
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+stand ready to extend this provision to those domains in future versions
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+ Finally, every program is threatened constantly by software patents.
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+ The precise terms and conditions for copying, distribution and
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+ "This License" refers to version 3 of the GNU General Public License.
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+ To "propagate" a work means to do anything with it that, without
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+ To "convey" a work means any kind of propagation that enables other
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+propagate that work, subject to this License. You are not responsible
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
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+consistent with the requirements of this License, to extend the patent
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+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
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+arrangement, you convey, or propagate by procuring conveyance of, a
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+you grant is automatically extended to all recipients of the covered
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+in the business of distributing software, under which you make payment
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+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
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+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
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+License and any other pertinent obligations, then as a consequence you may
+not convey it at all. For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+ Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ 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
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c2a21be
--- /dev/null
+++ b/README.md
@@ -0,0 +1,61 @@
+## kcptun for Android
+
+[kcptun](https://github.com/shadowsocks/kcptun) plugin for [shadowsocks-android](https://github.com/shadowsocks/shadowsocks-android).
+
+### CI STATUS
+
+[](https://travis-ci.org/shadowsocks/kcptun-android)
+
+### PREREQUISITES
+
+* JDK 1.8
+* SBT 0.13.0+
+* Go 1.4+
+* Android SDK
+ - Build Tools 25+
+ - Android Support Repository (see `build.sbt` for version)
+* Android NDK r12b+
+
+### BUILD
+
+* Set environment variable `ANDROID_HOME` to `/path/to/android-sdk`
+* Set environment variable `ANDROID_NDK_HOME` to `/path/to/android-ndk`
+* Set environment variable `GOROOT_BOOTSTRAP` to `/path/to/go`
+* Create your key following the instructions at https://developer.android.com/studio/publish/app-signing.html
+* Create `local.properties` from `local.properties.example` with your own key information
+* Invoke the building like this
+
+```bash
+ git submodule update --init --recursive
+
+ # Build the App
+ sbt clean go-build android:package-release
+```
+
+### TRANSLATE
+
+This plugin is an official plugin thus you can see [shadowsocks-android](https://github.com/shadowsocks/shadowsocks-android/blob/master/README.md#translate)'s instructions to translate this plugin's UI.
+
+## OPEN SOURCE LICENSES
+
+
+
+### LICENSE
+
+Copyright (C) 2017 by Max Lv <>
+Copyright (C) 2017 by Mygod Studio <>
+
+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 .
diff --git a/build.sbt b/build.sbt
new file mode 100644
index 0000000..8eddab7
--- /dev/null
+++ b/build.sbt
@@ -0,0 +1,34 @@
+scalaVersion := "2.11.8"
+
+enablePlugins(AndroidApp)
+android.useSupportVectors
+
+name := "kcptun"
+organization := "com.github.shadowsocks"
+version := "0.0.1"
+versionCode := Some(1)
+
+platformTarget := "android-25"
+
+compileOrder := CompileOrder.JavaThenScala
+javacOptions ++= "-source" :: "1.7" :: "-target" :: "1.7" :: Nil
+scalacOptions ++= "-target:jvm-1.7" :: "-Xexperimental" :: Nil
+
+proguardVersion := "5.3.2"
+proguardCache := Seq()
+
+shrinkResources := true
+typedResources := false
+resConfigs := Seq("zh-rCN")
+
+resolvers += "Local Maven Repository" at "file://" + Path.userHome.absolutePath + "/.m2/repository"
+
+libraryDependencies += "com.github.shadowsocks" %% "plugin" % "0.0.1-SNAPSHOT"
+
+lazy val goBuild = TaskKey[Unit]("go-build", "Build go and kcptun")
+goBuild := {
+ Process(Seq("src/make.bash", minSdkVersion.value)) ! streams.value.log match {
+ case 0 => // Success!
+ case n => sys.error(s"Native build script exit code: $n")
+ }
+}
diff --git a/local.properties.example b/local.properties.example
new file mode 100644
index 0000000..d23c53e
--- /dev/null
+++ b/local.properties.example
@@ -0,0 +1,3 @@
+key.alias: your_key_alias
+key.store: /path/to/your/key/store
+key.store.password: your_key_password
diff --git a/project/plugins.sbt b/project/plugins.sbt
new file mode 100644
index 0000000..d876664
--- /dev/null
+++ b/project/plugins.sbt
@@ -0,0 +1 @@
+addSbtPlugin("org.scala-android" % "sbt-android" % "1.7.3")
diff --git a/src/go b/src/go
new file mode 160000
index 0000000..dcf83d3
--- /dev/null
+++ b/src/go
@@ -0,0 +1 @@
+Subproject commit dcf83d3b990d79304b78780a3b128b76fc6b70cc
diff --git a/src/kcptun b/src/kcptun
new file mode 160000
index 0000000..87479ab
--- /dev/null
+++ b/src/kcptun
@@ -0,0 +1 @@
+Subproject commit 87479ab12e2c729564e1210a058984ae96e0d9b6
diff --git a/src/main/AndroidManifest.xml b/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..6bc724a
--- /dev/null
+++ b/src/main/AndroidManifest.xml
@@ -0,0 +1,38 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/src/main/ic_launcher-web.png b/src/main/ic_launcher-web.png
new file mode 100644
index 0000000..37c058a
Binary files /dev/null and b/src/main/ic_launcher-web.png differ
diff --git a/src/main/res/mipmap-hdpi/ic_kcptun_logo.png b/src/main/res/mipmap-hdpi/ic_kcptun_logo.png
new file mode 100644
index 0000000..fa7ea27
Binary files /dev/null and b/src/main/res/mipmap-hdpi/ic_kcptun_logo.png differ
diff --git a/src/main/res/mipmap-mdpi/ic_kcptun_logo.png b/src/main/res/mipmap-mdpi/ic_kcptun_logo.png
new file mode 100644
index 0000000..2522268
Binary files /dev/null and b/src/main/res/mipmap-mdpi/ic_kcptun_logo.png differ
diff --git a/src/main/res/mipmap-xhdpi/ic_kcptun_logo.png b/src/main/res/mipmap-xhdpi/ic_kcptun_logo.png
new file mode 100644
index 0000000..6fc0057
Binary files /dev/null and b/src/main/res/mipmap-xhdpi/ic_kcptun_logo.png differ
diff --git a/src/main/scala/com/github/shadowsocks/plugin/kcptun/BinaryProvider.scala b/src/main/scala/com/github/shadowsocks/plugin/kcptun/BinaryProvider.scala
new file mode 100644
index 0000000..f83522d
--- /dev/null
+++ b/src/main/scala/com/github/shadowsocks/plugin/kcptun/BinaryProvider.scala
@@ -0,0 +1,21 @@
+package com.github.shadowsocks.plugin.kcptun
+
+import java.io.{File, FileNotFoundException}
+
+import android.net.Uri
+import android.os.ParcelFileDescriptor
+import com.github.shadowsocks.plugin.{NativePluginProvider, PathProvider}
+
+/**
+ * @author Mygod
+ */
+final class BinaryProvider extends NativePluginProvider {
+ override protected def populateFiles(provider: PathProvider): Unit = provider.addPath("kcptun", "755")
+
+ override def getExecutable: String = getContext.getApplicationInfo.nativeLibraryDir + "/libkcptun.so"
+
+ override def openFile(uri: Uri): ParcelFileDescriptor = uri.getPath match {
+ case "/kcptun" => ParcelFileDescriptor.open(new File(getExecutable), ParcelFileDescriptor.MODE_READ_ONLY)
+ case _ => throw new FileNotFoundException()
+ }
+}
diff --git a/src/main/scala/com/github/shadowsocks/plugin/kcptun/HelpCallback.scala b/src/main/scala/com/github/shadowsocks/plugin/kcptun/HelpCallback.scala
new file mode 100644
index 0000000..31a3114
--- /dev/null
+++ b/src/main/scala/com/github/shadowsocks/plugin/kcptun/HelpCallback.scala
@@ -0,0 +1,33 @@
+package com.github.shadowsocks.plugin.kcptun
+
+import com.github.shadowsocks.plugin.PluginOptions
+
+import scala.io.Source
+
+/**
+ * @author Mygod
+ */
+class HelpCallback extends com.github.shadowsocks.plugin.HelpCallback {
+ override def produceHelpMessage(options: PluginOptions): CharSequence = {
+ val process = new ProcessBuilder(getApplicationInfo.nativeLibraryDir + "/libkcptun.so", "--help")
+ .redirectErrorStream(true)
+ .start()
+ process.waitFor()
+ Source.fromInputStream(process.getInputStream())
+ .getLines()
+ .dropWhile(line => line != "GLOBAL OPTIONS:")
+ .drop(1)
+ .takeWhile(line => line.length() > 3)
+ .filter(line =>
+ !line.startsWith(" --localaddr ") &&
+ !line.startsWith(" --remoteaddr ") &&
+ !line.startsWith(" -c ") &&
+ !line.startsWith(" -V ") &&
+ !line.startsWith(" --fast-open ") &&
+ !line.startsWith(" --help,") &&
+ !line.startsWith(" --version,"))
+ .mkString("\n")
+ .replaceAll(" {2,}", "\n")
+ .substring(1) // remove 1st \n
+ }
+}
diff --git a/src/make.bash b/src/make.bash
new file mode 100755
index 0000000..13bb793
--- /dev/null
+++ b/src/make.bash
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+function try () {
+"$@" || exit -1
+}
+
+[ -z "$ANDROID_NDK_HOME" ] && ANDROID_NDK_HOME=~/android-ndk-r12b
+
+DIR=$(pwd)/src
+MIN_API=$1
+DEPS=$(pwd)/.deps
+ANDROID_ARM_TOOLCHAIN=$DEPS/android-toolchain-${MIN_API}-arm
+ANDROID_X86_TOOLCHAIN=$DEPS/android-toolchain-${MIN_API}-x86
+
+ANDROID_ARM_CC=$ANDROID_ARM_TOOLCHAIN/bin/arm-linux-androideabi-gcc
+ANDROID_ARM_STRIP=$ANDROID_ARM_TOOLCHAIN/bin/arm-linux-androideabi-strip
+
+ANDROID_X86_CC=$ANDROID_X86_TOOLCHAIN/bin/i686-linux-android-gcc
+ANDROID_X86_STRIP=$ANDROID_X86_TOOLCHAIN/bin/i686-linux-android-strip
+
+try mkdir -p $DEPS $DIR/main/libs/armeabi-v7a $DIR/main/libs/x86
+
+if [ ! -d "$ANDROID_ARM_TOOLCHAIN" ]; then
+ echo "Make standalone toolchain for ARM arch"
+ $ANDROID_NDK_HOME/build/tools/make_standalone_toolchain.py --arch arm \
+ --api $MIN_API --install-dir $ANDROID_ARM_TOOLCHAIN
+fi
+
+if [ ! -d "$ANDROID_X86_TOOLCHAIN" ]; then
+ echo "Make standalone toolchain for X86 arch"
+ $ANDROID_NDK_HOME/build/tools/make_standalone_toolchain.py --arch x86 \
+ --api $MIN_API --install-dir $ANDROID_X86_TOOLCHAIN
+fi
+
+if [ ! -d "$DIR/go/bin" ]; then
+ echo "Build the custom go"
+
+ pushd $DIR/go/src
+ try ./make.bash
+ popd
+fi
+
+export GOROOT=$DIR/go
+export GOPATH=$DEPS/gopath
+export GOBIN=$GOPATH/bin
+mkdir -p $GOBIN
+export PATH=$GOROOT/bin:$PATH
+
+pushd $DIR/kcptun/client
+
+echo "Get dependences for kcptun"
+go get -u github.com/xtaci/kcp-go
+go get -u github.com/xtaci/smux
+go get
+
+echo "Cross compile kcptun for arm"
+try env CGO_ENABLED=1 CC=$ANDROID_ARM_CC GOOS=android GOARCH=arm GOARM=7 go build -ldflags="-s -w"
+try $ANDROID_ARM_STRIP client
+try mv client $DIR/main/libs/armeabi-v7a/libkcptun.so
+
+echo "Cross compile kcptun for x86"
+try env CGO_ENABLED=1 CC=$ANDROID_X86_CC GOOS=android GOARCH=386 go build -ldflags="-s -w"
+try $ANDROID_X86_STRIP client
+try mv client $DIR/main/libs/x86/libkcptun.so
+popd
+
+echo "Successfully build kcptun"