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source/LICENSE

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+MIT License
+
+Copyright (c) 2022 sail-tunnel
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

source/analysis_options.yaml

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+include: package:flutter_lints/flutter.yaml

source/android/.gitignore

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+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

source/android/app/build.gradle

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+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-parcelize'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdk 34
+    ndkVersion flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+        main.jniLibs.srcDirs = ['libs', 'src/main/jniLibs']
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "com.vpntunnel.vpnzeus"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
+        minSdkVersion 28
+        //noinspection ExpiredTargetSdkVersion
+//        targetSdkVersion 34
+        compileSdk 34
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+        // ndk {
+        //     abiFilters 'armeabi', 'armeabi-v7a', 'arm64-v8a', 'x86', "x86_64"
+        // }
+        //  dexOptions {
+        //     incremental true
+        //     javaMaxHeapSize "4g"
+        //     preDexLibraries true
+        //     dexInProcess = true
+        // }
+        ndk {
+                if (!project.hasProperty('target-platform')) {
+                    abiFilters 'arm64-v8a', 'armeabi-v7a', 'x86_64'
+                } else {
+                    def platforms = project.property('target-platform').split(',')
+                    def platformMap = [
+                            'android-arm'  : 'armeabi-v7a',
+                            'android-arm64': 'arm64-v8a',
+                            'android-x86'  : 'x86',
+                            'android-x64'  : 'x86_64',
+                    ]
+                    abiFilters = platforms.stream().map({ e ->
+                        platformMap.containsKey(e) ? platformMap[e] : e
+                    }).toArray()
+                }
+            }
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+        
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "com.jakewharton.timber:timber:5.0.1"
+    implementation 'androidx.work:work-runtime-ktx:2.7.1'
+    implementation 'androidx.preference:preference-ktx:1.2.0'
+    implementation "dnsjava:dnsjava:3.5.1"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-play-services:1.6.4"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4"
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
+}

source/android/app/profile/output-metadata.json

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+{
+  "version": 3,
+  "artifactType": {
+    "type": "APK",
+    "kind": "Directory"
+  },
+  "applicationId": "com.sail_tunnel.sail",
+  "variantName": "profile",
+  "elements": [
+    {
+      "type": "SINGLE",
+      "filters": [],
+      "attributes": [],
+      "versionCode": 3,
+      "versionName": "1.0.2",
+      "outputFile": "app-profile.apk"
+    }
+  ],
+  "elementType": "File"
+}

source/android/app/src/debug/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.sail_tunnel.sail">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
+</manifest>

source/android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.sail_tunnel.sail">
+
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.READ_PHONE_NUMBERS" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
+    <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
+
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
+    <uses-permission android:name="android.permission.SYSTEM_OVERLAY_WINDOW"/>
+
+
+    <uses-feature
+        android:name="android.software.leanback"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.touchscreen"
+        android:required="false" />
+
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission
+        android:name="android.permission.QUERY_ALL_PACKAGES"
+        />
+        
+    <application
+            android:label="UUVPN"
+            android:name="${applicationName}"
+            android:icon="@mipmap/app_icon"
+            android:largeHeap="true"
+            android:supportsRtl="true"
+            android:allowBackup="true"
+            android:hardwareAccelerated="false">
+<!--        android:icon="@mipmap/ic_launcher"-->
+        <activity
+                android:name=".MainActivity"
+                android:exported="true"
+                android:launchMode="singleTop"
+                android:theme="@style/LaunchTheme"
+                android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+                android:hardwareAccelerated="false"
+                android:windowSoftInputMode="adjustResize"
+            >
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+                    android:name="io.flutter.embedding.android.NormalTheme"
+                    android:resource="@style/NormalTheme"
+            />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+
+        <service
+                android:name=".TunnelService"
+                android:enabled="true"
+                
+                android:permission="android.permission.BIND_VPN_SERVICE"
+                android:exported="false">
+            <intent-filter>
+                <action android:name="android.net.VpnService"/>
+            </intent-filter>
+        </service>
+
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+                android:name="flutterEmbedding"
+                android:value="2"/>
+    </application>
+</manifest>

source/android/app/src/main/kotlin/com/sail_tunnel/sail/Core.kt

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+package com.sail_tunnel.sail
+
+import android.app.*
+import android.content.*
+import android.net.ConnectivityManager
+import android.util.Log
+import androidx.annotation.VisibleForTesting
+import androidx.core.content.getSystemService
+import kotlinx.coroutines.DEBUG_PROPERTY_NAME
+import kotlinx.coroutines.DEBUG_PROPERTY_VALUE_ON
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import timber.log.Timber
+import kotlin.reflect.KClass
+import androidx.work.Configuration
+import com.sail_tunnel.sail.utils.DeviceStorageApp
+
+object Core : Configuration.Provider {
+    lateinit var app: MainActivity
+        @VisibleForTesting set
+    lateinit var configureIntent: (Context) -> PendingIntent
+    val activity by lazy { app.getSystemService<ActivityManager>()!! }
+    val connectivity by lazy { app.getSystemService<ConnectivityManager>()!! }
+
+    val deviceStorage by lazy { DeviceStorageApp(app) }
+
+    fun init(app: MainActivity, configureClass: KClass<out Any>) {
+        this.app = app
+        this.configureIntent = {
+            PendingIntent.getActivity(it, 0, Intent(it, configureClass.java)
+                .setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT), PendingIntent.FLAG_IMMUTABLE)
+        }
+
+        // overhead of debug mode is minimal: https://github.com/Kotlin/kotlinx.coroutines/blob/f528898/docs/debugging.md#debug-mode
+        System.setProperty(DEBUG_PROPERTY_NAME, DEBUG_PROPERTY_VALUE_ON)
+
+        Timber.plant(object : Timber.DebugTree() {
+            override fun log(priority: Int, tag: String?, message: String, t: Throwable?) {
+                if (t == null) {
+                    if (priority != Log.DEBUG || BuildConfig.DEBUG) Log.println(priority, tag, message)
+                } else {
+                    if (priority >= Log.WARN || priority == Log.DEBUG) Log.println(priority, tag, message)
+                }
+            }
+        })
+    }
+
+    override fun getWorkManagerConfiguration() = Configuration.Builder().apply {
+        setDefaultProcessName(app.packageName + ":bg")
+        setMinimumLoggingLevel(if (BuildConfig.DEBUG) Log.VERBOSE else Log.INFO)
+        setExecutor { GlobalScope.launch { it.run() } }
+        setTaskExecutor { GlobalScope.launch { it.run() } }
+    }.build()
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/MainActivity.kt

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+package com.sail_tunnel.sail
+
+import android.content.Context
+import android.content.ContextWrapper
+import android.content.Intent
+import android.content.IntentFilter
+import android.net.ConnectivityManager
+import android.net.NetworkCapabilities
+import android.net.VpnService
+import android.os.BatteryManager
+import android.os.Build
+import android.os.Bundle
+import android.util.Log
+import com.sail_tunnel.sail.services.VpnState
+import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.android.FlutterView
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.embedding.engine.plugins.util.GeneratedPluginRegister
+import io.flutter.plugin.common.MethodChannel
+
+import io.flutter.plugins.GeneratedPluginRegistrant
+import java.io.File
+
+class MainActivity: FlutterActivity() {
+    private val channel = "com.vpntunnel.vpnzeus/vpn_manager"
+
+    private fun getServiceIntent(): Intent {
+        return Intent(this, TunnelService::class.java)
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        Core.init(this, MainActivity::class)
+
+        GeneratedPluginRegistrant.registerWith(FlutterEngine(this))
+        GeneratedPluginRegister.registerGeneratedPlugins(FlutterEngine(this));
+
+//        MethodChannel(FlutterView(this), channel).setMethodCallHandler { call, result ->
+//            if (call.method == "getBatteryLevel") {
+//                val batteryLevel : Int = getBatteryLevel()
+//
+//                if (batteryLevel != -1) {
+//                    result.success(batteryLevel)
+//                } else {
+//                    result.error("UNAVAILABLE", "Battery level not available.", null)
+//                }
+//            } else {
+//                Log.e("user_debug", "getBatteryLevel is not method of called")
+//                result.notImplemented()
+//            }
+//        }
+
+    }
+    private fun getBatteryLevel(): Int {
+        val batteryLevel: Int
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
+            val batteryManager = getSystemService(Context.BATTERY_SERVICE) as BatteryManager
+            batteryLevel = batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY)
+        } else  {
+            val intent = ContextWrapper(applicationContext).registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
+            batteryLevel = intent!!.getIntExtra(BatteryManager.EXTRA_LEVEL, -1) * 100 / intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1)
+        }
+        return batteryLevel
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+
+    }
+
+    override fun onPause() {
+        super.onPause()
+
+    }
+
+    private fun getVPNConnectionStatus(): Boolean? {
+        val context = this@MainActivity
+        val connectivityManager =
+            context.getSystemService(CONNECTIVITY_SERVICE) as ConnectivityManager
+        val networks = connectivityManager.allNetworks
+        //val TAG = "getVPNConnectionStatus"
+        //Log.i(TAG, "Network count: " + networks.size);
+        var hasvpn = false
+        for (i in 0 until networks.size) {
+//            connectivityManager.getNetworkCapabilities()
+            val caps: NetworkCapabilities? = connectivityManager.getNetworkCapabilities(networks.get(i))
+
+            hasvpn = caps?.hasTransport(NetworkCapabilities.TRANSPORT_VPN) == true
+
+//            Log.i(TAG, "Network " + i + ": " + networks.get(i).toString())
+//            Log.i(TAG, "VPN transport is: " + caps?.hasTransport(NetworkCapabilities.TRANSPORT_VPN))
+//            Log.i(TAG, "NOT_VPN capability is: " + caps?.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN) )
+        }
+    return hasvpn
+
+
+
+//        val activeNetwork = connectivityManager.activeNetwork
+//        val networkCapabilities = connectivityManager.getNetworkCapabilities(activeNetwork)
+//
+//        return networkCapabilities?.hasTransport(NetworkCapabilities.TRANSPORT_VPN)
+    }
+
+    override fun configureFlutterEngine( flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, channel).setMethodCallHandler {
+            call, result ->
+            // This method is invoked on the main thread.
+            if (call.method == "getStatus") {
+                result.success(getVPNConnectionStatus())
+            } else if (call.method == "toggle") {
+                val intent = VpnService.prepare(this)
+                if (intent != null) {
+                    startActivityForResult(intent, 0)
+                    result.success(false)
+                } else {
+                    startService(getServiceIntent())
+                    result.success(true)
+                }
+            } else if (call.method == "getTunnelLog") {
+               // val context = Core.deviceStorage
+               // val configRoot = context.noBackupFilesDir
+               // val config = File(configRoot, VpnState.LEAF_LOG_FILE).readText()
+               // result.success(config)
+            } else if (call.method == "getTunnelConfiguration") {
+                val context = Core.deviceStorage
+                val configRoot = context.noBackupFilesDir
+                val config = File(configRoot, VpnState.CONFIG_FILE).readText()
+                val TAGs = "getVPNConnectionStatus"
+                Log.i(TAGs, config);
+                result.success(config)
+            } else if (call.method == "setTunnelConfiguration") {
+                try {
+                    val context = Core.deviceStorage
+                    val configRoot = context.noBackupFilesDir
+                    val TAGs = "setTunnelConfiguration"
+                    Log.i(TAGs, call.arguments.toString());
+                    File(configRoot, VpnState.CONFIG_FILE).writeText(call.arguments.toString())
+                }catch (e: Exception ){
+                    println("setTunnelConfiguration FILE NullPointerException")
+                }
+
+
+            } else if (call.method == "update") {
+                //
+            } else {
+                result.notImplemented()
+            }
+        }
+    }
+
+    override fun onActivityResult(request: Int, result: Int, data: Intent?) {
+        if (result == RESULT_OK) {
+            startService(getServiceIntent())
+        } else {
+            super.onActivityResult(request, result, data)
+        }
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/TunnelService.kt

@@ -0,0 +1,251 @@
+package com.sail_tunnel.sail
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.graphics.BitmapFactory
+import android.media.projection.MediaProjection
+import android.media.projection.MediaProjectionManager
+import android.net.*
+import android.os.Build
+import android.os.ParcelFileDescriptor
+import androidx.core.app.NotificationCompat
+import com.sail_tunnel.sail.net.DefaultNetworkListener
+import com.sail_tunnel.sail.net.DnsResolverCompat
+import com.sail_tunnel.sail.services.LocalDnsWorker
+import com.sail_tunnel.sail.services.TunnelInstance
+import com.sail_tunnel.sail.services.VpnState
+import com.sail_tunnel.sail.utils.readableMessage
+import kotlinx.coroutines.*
+import java.io.File
+import java.io.IOException
+
+class TunnelService : VpnService() {
+    companion object {
+        private const val CORE_NAME = "leaf"
+        private const val VPN_MTU = 1500
+        private const val PRIVATE_VLAN4_CLIENT = "198.18.20.20"
+        private const val PRIVATE_VLAN4_ROUTER = "1.1.1.1"
+    }
+
+    inner class NullConnectionException : NullPointerException() {
+        override fun getLocalizedMessage() =
+            "Failed to start VPN service. You might need to reboot your device."
+    }
+
+    private val data = VpnState.Data()
+
+    private fun startRunner() {
+
+        if (Build.VERSION.SDK_INT >= 26) startForegroundService(Intent(this, javaClass))
+        else startService(Intent(this, javaClass))
+    }
+
+    private var pfd: ParcelFileDescriptor? = null
+    private var active = false
+    private var metered = false
+
+
+    var notification: Notification? = null
+    private val mResultData: Intent? = null
+    private val mMediaProjection: MediaProjection? = null
+    private val mMediaProjectionManager: MediaProjectionManager? = null
+
+
+    @Volatile
+    private var underlyingNetwork: Network? = null
+        set(value) {
+            field = value
+            if (active) setUnderlyingNetworks(underlyingNetworks)
+        }
+    private val underlyingNetworks
+        get() =
+            // clearing underlyingNetworks makes Android 9 consider the network to be metered
+            if (Build.VERSION.SDK_INT == 28 && metered) null else underlyingNetwork?.let {
+                arrayOf(
+                    it
+                )
+            }
+
+    override fun onRevoke() = stopRunner()
+
+    private fun killProcesses(scope: CoroutineScope) {
+        data.proxy?.run {
+            shutdown(scope)
+            data.proxy = null
+        }
+        data.localDns?.shutdown(scope)
+        data.localDns = null
+
+        active = false
+        scope.launch { DefaultNetworkListener.stop(this) }
+        pfd?.close()
+        pfd = null
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        val data = data
+        if (data.state != VpnState.State.Stopped) return Service.START_NOT_STICKY
+
+        try {
+            data.proxy = TunnelInstance()
+        } catch (e: IllegalArgumentException) {
+            stopRunner(false, e.message)
+            return Service.START_NOT_STICKY
+        }
+        createNotificationChannel()
+        data.changeState(VpnState.State.Connecting)
+        data.connectingJob = GlobalScope.launch(Dispatchers.Main) {
+            try {
+                preInit()
+
+                startVpn()
+
+                data.changeState(VpnState.State.Connected)
+            } catch (_: CancellationException) {
+                // if the job was cancelled, it is canceller's responsibility to call stopRunner
+            } catch (exc: Throwable) {
+                stopRunner(false, exc.readableMessage)
+            } finally {
+                data.connectingJob = null
+            }
+        }
+
+        return START_NOT_STICKY
+    }
+
+
+    private fun createNotificationChannel() {
+        val CHANNEL_ID: String = "notification_id"
+        val builder = NotificationCompat.Builder(this.applicationContext,CHANNEL_ID) //获取一个Notification构造器
+        val nfIntent = Intent(this, MainActivity::class.java) //点击后跳转的界面，可以设置跳转数据
+        val pendingIntent: PendingIntent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            PendingIntent.getActivity(this, 0, nfIntent, PendingIntent.FLAG_IMMUTABLE)
+        } else {
+            PendingIntent.getActivity(this, 0, nfIntent, PendingIntent.FLAG_ONE_SHOT)
+        }
+
+        val intentClick = Intent(
+            this,MainActivity::class.java
+//            BroadcastReceiver::class.java
+        )
+
+
+        intentClick.action = "notification_clicked"
+//        intentClick.putExtra(BroadcastReceiver.TYPE, type)
+        val pendingIntentClick =
+            PendingIntent.getBroadcast(this, 0, intentClick, PendingIntent.FLAG_ONE_SHOT)
+
+
+        //.setContentIntent(pendingIntent) // 设置PendingIntent
+        builder.setContentIntent(pendingIntentClick).setLargeIcon(
+            BitmapFactory.decodeResource(
+                this.resources,
+                R.mipmap.app_icon_round
+            )
+        ) // 设置下拉列表中的图标(大图标)
+            .setContentTitle("UUVPN") // 设置下拉列表里的标题
+            .setSmallIcon( R.mipmap.app_icon_round) // 设置状态栏内的小图标
+            .setContentText("正在运行...") // 设置上下文内容
+            .setWhen(System.currentTimeMillis()) // 设置该通知发生的时间
+
+        /*以下是对Android 8.0的适配*/
+        //普通notification适配
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            builder.setChannelId("notification_id")
+        }
+
+
+        //前台服务notification适配
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+
+            val channel = NotificationChannel(
+                "notification_id",
+                "notification_name",
+                NotificationManager.IMPORTANCE_LOW
+            )
+
+
+            // Register the channel with the system
+            val notificationManager: NotificationManager =
+                getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            notificationManager.createNotificationChannel(channel)
+
+        }
+
+        notification = builder.build() // 获取构建好的Notification
+//        notification.defaulte = Notification.DEFAULT_SOUND //设置为默认的声音
+        try {
+            startForeground(110, notification)
+        } catch (w: Exception) {
+            w.printStackTrace()
+        }
+    }
+    private suspend fun preInit() = DefaultNetworkListener.start(this) { underlyingNetwork = it }
+    private suspend fun rawResolver(query: ByteArray) =
+    // no need to listen for network here as this is only used for forwarding local DNS queries.
+        // retries should be attempted by client.
+        DnsResolverCompat.resolveRaw(underlyingNetwork ?: throw IOException("no network"), query)
+
+    private suspend fun startVpn() {
+        val builder = Builder()
+            .setConfigureIntent(Core.configureIntent(this))
+            .setSession(CORE_NAME)
+            .setMtu(VPN_MTU)
+            .addAddress(PRIVATE_VLAN4_CLIENT, 24)
+            .addDnsServer(PRIVATE_VLAN4_ROUTER)
+            .addRoute("0.0.0.0", 0)
+
+        active = true   // possible race condition here?
+        builder.setUnderlyingNetworks(underlyingNetworks)
+        if (Build.VERSION.SDK_INT >= 29) builder.setMetered(metered)
+
+        this.pfd = builder.establish() ?: throw NullConnectionException()
+
+        val context = Core.deviceStorage
+        val configRoot = context.noBackupFilesDir
+
+        data.localDns = LocalDnsWorker(this::rawResolver).apply { start() }
+
+        val configFile = File(configRoot, VpnState.CONFIG_FILE)
+        val configContent = configFile
+            .readText()
+            .replace("{{leafLogFile}}", File(configRoot, VpnState.LEAF_LOG_FILE).absolutePath)
+            .replace("{{tunFd}}", this.pfd?.fd?.toLong().toString())
+
+        configFile.writeText(configContent)
+
+        data.proxy!!.start(
+            this,
+            File(Core.deviceStorage.noBackupFilesDir, "stat_main"),
+            configFile,
+        )
+
+    }
+
+    private fun stopRunner(restart: Boolean = false, msg: String? = null) {
+        if (data.state == VpnState.State.Stopping) return
+        // channge the state
+        data.changeState(VpnState.State.Stopping)
+        GlobalScope.launch(Dispatchers.Main.immediate) {
+            data.connectingJob?.cancelAndJoin() // ensure stop connecting first
+            // we use a coroutineScope here to allow clean-up in parallel
+            coroutineScope {
+                killProcesses(GlobalScope)
+            }
+
+            // change the state
+            data.changeState(VpnState.State.Stopped, msg)
+
+            // stop the service if nothing has bound to it
+            if (restart) startRunner() else {
+                stopSelf()
+            }
+        }
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/net/ConcurrentLocalSocketListener.kt

@@ -0,0 +1,23 @@
+package com.sail_tunnel.sail.net
+
+import android.net.LocalSocket
+import kotlinx.coroutines.*
+import timber.log.Timber
+import java.io.File
+
+abstract class ConcurrentLocalSocketListener(name: String, socketFile: File) : LocalSocketListener(name, socketFile),
+    CoroutineScope {
+    override val coroutineContext = Dispatchers.IO + SupervisorJob() + CoroutineExceptionHandler { _, t -> Timber.w(t) }
+
+    override fun accept(socket: LocalSocket) {
+        launch { super.accept(socket) }
+    }
+
+    override fun shutdown(scope: CoroutineScope) {
+        running = false
+        cancel()
+        super.shutdown(scope)
+        coroutineContext[Job]!!.also { job -> scope.launch { job.join() } }
+    }
+}
+

source/android/app/src/main/kotlin/com/sail_tunnel/sail/net/DefaultNetworkListener.kt

@@ -0,0 +1,126 @@
+package com.sail_tunnel.sail.net
+
+import android.annotation.TargetApi
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkRequest
+import android.os.Build
+import android.os.Handler
+import android.os.Looper
+import androidx.annotation.RequiresApi
+import com.sail_tunnel.sail.Core
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.channels.actor
+import kotlinx.coroutines.runBlocking
+import java.net.UnknownHostException
+
+object DefaultNetworkListener {
+    private sealed class NetworkMessage {
+        class Start(val key: Any, val listener: (Network?) -> Unit) : NetworkMessage()
+        class Get : NetworkMessage() {
+            val response = CompletableDeferred<Network>()
+        }
+        class Stop(val key: Any) : NetworkMessage()
+
+        class Put(val network: Network) : NetworkMessage()
+        class Update(val network: Network) : NetworkMessage()
+        class Lost(val network: Network) : NetworkMessage()
+    }
+
+    private val networkActor = GlobalScope.actor<NetworkMessage>(Dispatchers.Unconfined) {
+        val listeners = mutableMapOf<Any, (Network?) -> Unit>()
+        var network: Network? = null
+        val pendingRequests = arrayListOf<NetworkMessage.Get>()
+        for (message in channel) when (message) {
+            is NetworkMessage.Start -> {
+                if (listeners.isEmpty()) register()
+                listeners[message.key] = message.listener
+                if (network != null) message.listener(network)
+            }
+            is NetworkMessage.Get -> {
+                check(listeners.isNotEmpty()) { "Getting network without any listeners is not supported" }
+                if (network == null) pendingRequests += message else message.response.complete(network)
+            }
+            is NetworkMessage.Stop -> if (listeners.isNotEmpty() && // was not empty
+                listeners.remove(message.key) != null && listeners.isEmpty()) {
+                network = null
+                unregister()
+            }
+
+            is NetworkMessage.Put -> {
+                network = message.network
+                pendingRequests.forEach { it.response.complete(message.network) }
+                pendingRequests.clear()
+                listeners.values.forEach { it(network) }
+            }
+            is NetworkMessage.Update -> if (network == message.network) listeners.values.forEach { it(network) }
+            is NetworkMessage.Lost -> if (network == message.network) {
+                network = null
+                listeners.values.forEach { it(null) }
+            }
+        }
+    }
+
+    suspend fun start(key: Any, listener: (Network?) -> Unit) = networkActor.send(NetworkMessage.Start(key, listener))
+    suspend fun get() = if (fallback)  {
+        Core.connectivity.activeNetwork ?: throw UnknownHostException() // failed to listen, return current if available
+    } else NetworkMessage.Get().run {
+        networkActor.send(this)
+        response.await()
+    }
+    suspend fun stop(key: Any) = networkActor.send(NetworkMessage.Stop(key))
+
+    // NB: this runs in ConnectivityThread, and this behavior cannot be changed until API 26
+    private object Callback : ConnectivityManager.NetworkCallback() {
+        override fun onAvailable(network: Network) = runBlocking { networkActor.send(NetworkMessage.Put(network)) }
+        override fun onCapabilitiesChanged(network: Network, networkCapabilities: NetworkCapabilities) {
+            // it's a good idea to refresh capabilities
+            runBlocking { networkActor.send(NetworkMessage.Update(network)) }
+        }
+        override fun onLost(network: Network) = runBlocking { networkActor.send(NetworkMessage.Lost(network)) }
+    }
+
+    private var fallback = false
+    private val request = NetworkRequest.Builder().apply {
+        addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+        addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
+    }.build()
+    private val mainHandler = Handler(Looper.getMainLooper())
+
+    /**
+     * Unfortunately registerDefaultNetworkCallback is going to return VPN interface since Android P DP1:
+     * https://android.googlesource.com/platform/frameworks/base/+/dda156ab0c5d66ad82bdcf76cda07cbc0a9c8a2e
+     *
+     * This makes doing a requestNetwork with REQUEST necessary so that we don't get ALL possible networks that
+     * satisfies default network capabilities but only THE default network. Unfortunately, we need to have
+     * android.permission.CHANGE_NETWORK_STATE to be able to call requestNetwork.
+     *
+     * Source: https://android.googlesource.com/platform/frameworks/base/+/2df4c7d/services/core/java/com/android/server/ConnectivityService.java#887
+     */
+    private fun register() {
+        when (Build.VERSION.SDK_INT) {
+            in 31..Int.MAX_VALUE -> @TargetApi(31) {
+                Core.connectivity.registerBestMatchingNetworkCallback(request, Callback, mainHandler)
+            }
+            in 28 until 31 -> @TargetApi(28) {  // we want REQUEST here instead of LISTEN
+                Core.connectivity.requestNetwork(request, Callback, mainHandler)
+            }
+            in 26 until 28 -> @TargetApi(26) {
+                Core.connectivity.registerDefaultNetworkCallback(Callback, mainHandler)
+            }
+            in 24 until 26 ->  {
+                Core.connectivity.registerDefaultNetworkCallback(Callback)
+            }
+            else -> try {
+                fallback = false
+                Core.connectivity.requestNetwork(request, Callback)
+            } catch (e: RuntimeException) {
+                fallback = true     // known bug on API 23: https://stackoverflow.com/a/33509180/2245107
+            }
+        }
+    }
+    private fun unregister() = Core.connectivity.unregisterNetworkCallback(Callback)
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/net/DnsResolverCompat.kt

@@ -0,0 +1,167 @@
+package com.sail_tunnel.sail.net
+
+import android.annotation.TargetApi
+import android.net.DnsResolver
+import android.net.Network
+import android.os.Build
+import android.os.CancellationSignal
+import androidx.annotation.RequiresApi
+import com.sail_tunnel.sail.Core
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.asCoroutineDispatcher
+import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlinx.coroutines.withContext
+import org.xbill.DNS.*
+import java.io.IOException
+import java.net.Inet4Address
+import java.net.Inet6Address
+import java.net.InetAddress
+import java.util.concurrent.Executor
+import java.util.concurrent.Executors
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
+
+@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
+sealed class DnsResolverCompat {
+    companion object : DnsResolverCompat() {
+        private val instance by lazy {
+            when (Build.VERSION.SDK_INT) {
+                in 29..Int.MAX_VALUE -> DnsResolverCompat29
+                in 23 until 29 -> DnsResolverCompat23
+                else -> error("Unsupported API level")
+            }
+        }
+
+        override suspend fun resolve(network: Network, host: String) = instance.resolve(network, host)
+        override suspend fun resolveOnActiveNetwork(host: String) = instance.resolveOnActiveNetwork(host)
+        override suspend fun resolveRaw(network: Network, query: ByteArray) = instance.resolveRaw(network, query)
+        override suspend fun resolveRawOnActiveNetwork(query: ByteArray) = instance.resolveRawOnActiveNetwork(query)
+
+        // additional platform-independent DNS helpers
+
+        /**
+         * TTL returned from localResolver is set to 120. Android API does not provide TTL,
+         * so we suppose Android apps should not care about TTL either.
+         */
+        private const val TTL = 120L
+
+        fun prepareDnsResponse(request: Message) = Message(request.header.id).apply {
+            header.setFlag(Flags.QR.toInt())    // this is a response
+            header.setFlag(Flags.RA.toInt())    // recursion available
+            if (request.header.getFlag(Flags.RD.toInt())) header.setFlag(Flags.RD.toInt())
+            request.question?.also { addRecord(it, Section.QUESTION) }
+        }
+    }
+
+    abstract suspend fun resolve(network: Network, host: String): Array<InetAddress>
+    abstract suspend fun resolveOnActiveNetwork(host: String): Array<InetAddress>
+    abstract suspend fun resolveRaw(network: Network, query: ByteArray): ByteArray
+    abstract suspend fun resolveRawOnActiveNetwork(query: ByteArray): ByteArray
+
+    private object DnsResolverCompat23 : DnsResolverCompat() {
+        /**
+         * This dispatcher is used for noncancellable possibly-forever-blocking operations in network IO.
+         *
+         * See also: https://issuetracker.google.com/issues/133874590
+         */
+        private val unboundedIO by lazy {
+            if (Core.activity.isLowRamDevice) Dispatchers.IO
+            else Executors.newCachedThreadPool().asCoroutineDispatcher()
+        }
+
+        override suspend fun resolve(network: Network, host: String) =
+            withContext(unboundedIO) { network.getAllByName(host) }
+        override suspend fun resolveOnActiveNetwork(host: String) =
+            withContext(unboundedIO) { InetAddress.getAllByName(host) }
+
+        private suspend fun resolveRaw(query: ByteArray, networkSpecified: Boolean = true,
+                                       hostResolver: suspend (String) -> Array<InetAddress>): ByteArray {
+            val request = try {
+                Message(query)
+            } catch (e: IOException) {
+                throw UnsupportedOperationException(e)  // unrecognized packet
+            }
+            when (val opcode = request.header.opcode) {
+                Opcode.QUERY -> { }
+                else -> throw UnsupportedOperationException("Unsupported opcode $opcode")
+            }
+            val question = request.question
+            val isIpv6 = when (val type = question?.type) {
+                Type.A -> false
+                Type.AAAA -> true
+                Type.PTR -> {
+                    /* Android does not provide a PTR lookup API for Network prior to Android 10 */
+                    if (networkSpecified) throw IOException(UnsupportedOperationException("Network unspecified"))
+                    val ip = try {
+                        ReverseMap.fromName(question.name)
+                    } catch (e: IOException) {
+                        throw UnsupportedOperationException(e)  // unrecognized PTR name
+                    }
+                    val hostname = withContext(unboundedIO) { ip.hostName }.let { hostname ->
+                        if (hostname == ip.hostAddress) null else Name.fromString("$hostname.")
+                    }
+                    return prepareDnsResponse(request).apply {
+                        hostname?.let { addRecord(PTRRecord(question.name, DClass.IN, TTL, it), Section.ANSWER) }
+                    }.toWire()
+                }
+                else -> throw UnsupportedOperationException("Unsupported query type $type")
+            }
+            val host = question.name.canonicalize().toString(true)
+            return prepareDnsResponse(request).apply {
+                for (address in hostResolver(host).asIterable().run {
+                    if (isIpv6) filterIsInstance<Inet6Address>() else filterIsInstance<Inet4Address>()
+                }) addRecord(when (address) {
+                    is Inet4Address -> ARecord(question.name, DClass.IN, TTL, address)
+                    is Inet6Address -> AAAARecord(question.name, DClass.IN, TTL, address)
+                    else -> error("Unsupported address $address")
+                }, Section.ANSWER)
+            }.toWire()
+        }
+        override suspend fun resolveRaw(network: Network, query: ByteArray) =
+            resolveRaw(query) { resolve(network, it) }
+        override suspend fun resolveRawOnActiveNetwork(query: ByteArray) =
+            resolveRaw(query, false, this::resolveOnActiveNetwork)
+    }
+
+    @TargetApi(29)
+    private object DnsResolverCompat29 : DnsResolverCompat(), Executor {
+        /**
+         * This executor will run on its caller directly. On Q beta 3 thru 4, this results in calling in main thread.
+         */
+        override fun execute(command: Runnable) = command.run()
+
+        private val activeNetwork get() = Core.connectivity.activeNetwork ?: throw IOException("no network")
+
+        override suspend fun resolve(network: Network, host: String): Array<InetAddress> {
+            return suspendCancellableCoroutine { cont ->
+                val signal = CancellationSignal()
+                cont.invokeOnCancellation { signal.cancel() }
+                // retry should be handled by client instead
+                DnsResolver.getInstance().query(network, host, DnsResolver.FLAG_NO_RETRY, this,
+                    signal, object : DnsResolver.Callback<Collection<InetAddress>> {
+                        override fun onAnswer(answer: Collection<InetAddress>, rcode: Int) =
+                            cont.resume(answer.toTypedArray())
+                        override fun onError(error: DnsResolver.DnsException) = cont.resumeWithException(
+                            IOException(error)
+                        )
+                    })
+            }
+        }
+        override suspend fun resolveOnActiveNetwork(host: String) = resolve(activeNetwork, host)
+
+        override suspend fun resolveRaw(network: Network, query: ByteArray): ByteArray {
+            return suspendCancellableCoroutine { cont ->
+                val signal = CancellationSignal()
+                cont.invokeOnCancellation { signal.cancel() }
+                DnsResolver.getInstance().rawQuery(network, query, DnsResolver.FLAG_NO_RETRY, this,
+                    signal, object : DnsResolver.Callback<ByteArray> {
+                        override fun onAnswer(answer: ByteArray, rcode: Int) = cont.resume(answer)
+                        override fun onError(error: DnsResolver.DnsException) = cont.resumeWithException(
+                            IOException(error)
+                        )
+                    })
+            }
+        }
+        override suspend fun resolveRawOnActiveNetwork(query: ByteArray) = resolveRaw(activeNetwork, query)
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/net/LocalSocketListener.kt

@@ -0,0 +1,62 @@
+package com.sail_tunnel.sail.net
+
+import android.annotation.SuppressLint
+import android.net.LocalServerSocket
+import android.net.LocalSocket
+import android.net.LocalSocketAddress
+import android.system.ErrnoException
+import android.system.Os
+import android.system.OsConstants
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.channels.onFailure
+import kotlinx.coroutines.channels.trySendBlocking
+import kotlinx.coroutines.launch
+import timber.log.Timber
+import java.io.File
+import java.io.IOException
+
+abstract class LocalSocketListener(name: String, socketFile: File) : Thread(name) {
+    private val localSocket = LocalSocket().apply {
+        socketFile.delete() // It's a must-have to close and reuse previous local socket.
+        bind(LocalSocketAddress(socketFile.absolutePath, LocalSocketAddress.Namespace.FILESYSTEM))
+    }
+    private val serverSocket = LocalServerSocket(localSocket.fileDescriptor)
+    private val closeChannel = Channel<Unit>(1)
+    @Volatile
+    protected var running = true
+
+    /**
+     * Inherited class do not need to close input/output streams as they will be closed automatically.
+     */
+    protected open fun accept(socket: LocalSocket) = socket.use { acceptInternal(socket) }
+    protected abstract fun acceptInternal(socket: LocalSocket)
+    final override fun run() {
+        localSocket.use {
+            while (running) {
+                try {
+                    accept(serverSocket.accept())
+                } catch (e: IOException) {
+                    if (running) Timber.w(e)
+                    continue
+                }
+            }
+        }
+        closeChannel.trySendBlocking(Unit).onFailure { throw it!! }
+    }
+
+    @SuppressLint("NewApi")
+    open fun shutdown(scope: CoroutineScope) {
+        running = false
+        localSocket.fileDescriptor?.apply {
+            // see also: https://issuetracker.google.com/issues/36945762#comment15
+            if (valid()) try {
+                Os.shutdown(this, OsConstants.SHUT_RDWR)
+            } catch (e: ErrnoException) {
+                // suppress fd inactive or already closed
+                if (e.errno != OsConstants.EBADF && e.errno != OsConstants.ENOTCONN) throw e.rethrowAsSocketException()
+            }
+        }
+        scope.launch { closeChannel.receive() }
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/services/LocalDnsWorker.kt

@@ -0,0 +1,64 @@
+package com.sail_tunnel.sail.services
+
+import android.net.LocalSocket
+import android.os.Build
+import androidx.annotation.RequiresApi
+import com.sail_tunnel.sail.Core
+import com.sail_tunnel.sail.net.ConcurrentLocalSocketListener
+import com.sail_tunnel.sail.net.DnsResolverCompat
+import com.sail_tunnel.sail.utils.readableMessage
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.TimeoutCancellationException
+import kotlinx.coroutines.launch
+import timber.log.Timber
+import java.io.DataInputStream
+import java.io.DataOutputStream
+import java.io.File
+import java.io.IOException
+import org.xbill.DNS.Message
+import org.xbill.DNS.Rcode
+
+class LocalDnsWorker(private val resolver: suspend (ByteArray) -> ByteArray) : ConcurrentLocalSocketListener(
+    "LocalDnsThread", File(Core.deviceStorage.noBackupFilesDir, "local_dns_path")
+), CoroutineScope {
+    override fun acceptInternal(socket: LocalSocket) = error("big no no")
+    override fun accept(socket: LocalSocket) {
+        launch {
+            socket.use {
+                val input = DataInputStream(socket.inputStream)
+                val query = try {
+                    ByteArray(input.readUnsignedShort()).also { input.read(it) }
+                } catch (e: IOException) {  // connection early close possibly due to resolving timeout
+                    return@use Timber.d(e)
+                }
+                try {
+                    resolver(query)
+                } catch (e: Exception) {
+                    when (e) {
+                        is TimeoutCancellationException -> Timber.w("Resolving timed out")
+                        is CancellationException -> { } // ignore
+                        is IOException -> Timber.d(e)
+                        is UnsupportedOperationException -> Timber.w(e.message)
+                        else -> Timber.w(e)
+                    }
+                    try {
+                        DnsResolverCompat.prepareDnsResponse(Message(query)).apply {
+                            header.rcode = Rcode.SERVFAIL
+                        }.toWire()
+                    } catch (_: IOException) {
+                        byteArrayOf()   // return empty if cannot parse packet
+                    }
+                }.let { response ->
+                    try {
+                        val output = DataOutputStream(socket.outputStream)
+                        output.writeShort(response.size)
+                        output.write(response)
+                    } catch (e: IOException) {
+                        Timber.d(e.readableMessage)
+                    }
+                }
+            }
+        }
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/services/TrafficMonitor.kt

@@ -0,0 +1,89 @@
+package com.sail_tunnel.sail.services
+
+import android.net.LocalSocket
+import android.os.SystemClock
+import com.sail_tunnel.sail.net.LocalSocketListener
+import com.sail_tunnel.sail.utils.TrafficStats
+import java.io.File
+import java.io.IOException
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+
+class TrafficMonitor(statFile: File) {
+    val thread = object : LocalSocketListener("TrafficMonitor-" + statFile.name, statFile) {
+        private val buffer = ByteArray(16)
+        private val stat = ByteBuffer.wrap(buffer).order(ByteOrder.LITTLE_ENDIAN)
+        override fun acceptInternal(socket: LocalSocket) {
+            when (val read = socket.inputStream.read(buffer)) {
+                -1 -> return
+                16 -> { }
+                else -> throw IOException("Unexpected traffic stat length $read")
+            }
+            val tx = stat.getLong(0)
+            val rx = stat.getLong(8)
+            if (current.txTotal != tx) {
+                current.txTotal = tx
+                dirty = true
+            }
+            if (current.rxTotal != rx) {
+                current.rxTotal = rx
+                dirty = true
+            }
+        }
+    }.apply { start() }
+
+    val current = TrafficStats()
+    var out = TrafficStats()
+    private var timestampLast = 0L
+    private var dirty = false
+    private var persisted: TrafficStats? = null
+
+    fun requestUpdate(): Pair<TrafficStats, Boolean> {
+        val now = SystemClock.elapsedRealtime()
+        val delta = now - timestampLast
+        timestampLast = now
+        var updated = false
+        if (delta != 0L) {
+            if (dirty) {
+                out = current.copy().apply {
+                    txRate = (txTotal - out.txTotal) * 1024 / delta
+                    rxRate = (rxTotal - out.rxTotal) * 1024 / delta
+                }
+                dirty = false
+                updated = true
+            } else {
+                if (out.txRate != 0L) {
+                    out.txRate = 0
+                    updated = true
+                }
+                if (out.rxRate != 0L) {
+                    out.rxRate = 0
+                    updated = true
+                }
+            }
+        }
+        return Pair(out, updated)
+    }
+
+    fun persistStats() {
+        val current = current
+        check(persisted == null || persisted == current) { "Data loss occurred" }
+        persisted = current
+
+//        try {
+//            // profile may have host, etc. modified and thus a re-fetch is necessary (possible race condition)
+//            val profile = ProfileManager.getProfile(id) ?: return
+//            profile.tx += current.txTotal
+//            profile.rx += current.rxTotal
+//            ProfileManager.updateProfile(profile)
+//        } catch (e: IOException) {
+//            if (!DataStore.directBootAware) throw e // we should only reach here because we're in direct boot
+//            val profile = DirectBoot.getDeviceProfile()!!.toList().single { it.id == id }
+//            profile.tx += current.txTotal
+//            profile.rx += current.rxTotal
+//            profile.dirty = true
+//            DirectBoot.update(profile)
+//            DirectBoot.listenForUnlock()
+//        }
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/services/TunnelInstance.kt

@@ -0,0 +1,106 @@
+package com.sail_tunnel.sail.services
+
+import android.net.LocalServerSocket
+import android.net.LocalSocket
+import android.net.LocalSocketAddress
+import android.system.Os
+import com.sail_tunnel.sail.Core
+import com.sail_tunnel.sail.TunnelService
+import kotlinx.coroutines.CoroutineScope
+import timber.log.Timber
+import java.io.File
+import java.nio.ByteBuffer
+import kotlin.concurrent.thread
+
+class TunnelInstance() {
+    private var configFile: File? = null
+    var trafficMonitor: TrafficMonitor? = null
+
+    private val rtId: Int = 666
+
+    init {
+        System.loadLibrary("leaf")
+    }
+
+    private external fun leafRun(rtId: Int, configPath: String)
+    private external fun leafReload(rtId: Int)
+    private external fun leafShutdown(rtId: Int)
+    private external fun leafTestConfig(configPath: String)
+
+    /**
+     * Sensitive shadowsocks configuration file requires extra protection. It may be stored in encrypted storage or
+     * device storage, depending on which is currently available.
+     */
+    fun start(
+        service: TunnelService,
+        stat: File,
+        configFile: File,
+    ) {
+        // setup traffic monitor path
+        trafficMonitor = TrafficMonitor(stat)
+
+        Timber.i("start process")
+
+        val context = Core.deviceStorage
+        val configRoot = context.noBackupFilesDir //noBackupFilesDir
+        val protectPath =
+            File.createTempFile("socket_protect", ".sock", configRoot).absolutePath
+
+        Os.setenv("SOCKET_PROTECT_PATH", protectPath, true)
+
+        println("protectPath: $protectPath")
+
+        thread (start = true) {
+            val localSocket = LocalSocket()
+            localSocket.bind(
+                LocalSocketAddress(
+                    protectPath,
+                    LocalSocketAddress.Namespace.FILESYSTEM
+                )
+            )
+            val socket = LocalServerSocket(localSocket.fileDescriptor)
+            val buffer = ByteBuffer.allocate(4)
+
+            while (true) {
+                val stream = socket.accept()
+                buffer.clear()
+                val n = stream.inputStream.read(buffer.array())
+
+                System.out.write(n)
+
+                if (n == 4) {
+                    val fd = buffer.int
+                    if (!service.protect(fd)) {
+                        println("protect failed")
+                    }
+                    buffer.clear()
+                    buffer.putInt(0)
+                } else {
+                    buffer.clear()
+                    buffer.putInt(1)
+                }
+                stream.outputStream.write(buffer.array())
+            }
+        }
+
+        // start tunnel program
+        thread(start = true) {
+            leafRun(rtId, configFile.absolutePath)
+        }
+    }
+
+    fun shutdown(scope: CoroutineScope) {
+        trafficMonitor?.apply {
+            thread.shutdown(scope)
+            persistStats()    // Make sure update total traffic when stopping the runner
+        }
+        trafficMonitor = null
+        configFile?.delete()    // remove old config possibly in device storage
+        configFile = null
+
+        // stop tunnel program
+        thread(start = true, isDaemon = true) {
+            leafShutdown(rtId)
+        }
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/services/VpnState.kt

@@ -0,0 +1,32 @@
+package com.sail_tunnel.sail.services
+
+import kotlinx.coroutines.Job
+
+object VpnState {
+    enum class State {
+        /**
+         * Idle state is only used by UI and will never be returned by BaseService.
+         */
+        Idle,
+        Connecting,
+        Connected,
+        Stopping,
+        Stopped,
+    }
+
+    const val CONFIG_FILE = "leaf.conf"
+    const val LEAF_LOG_FILE = "leaf.log"
+
+    class Data internal constructor() {
+        var state = State.Stopped
+        var proxy: TunnelInstance? = null
+        var localDns: LocalDnsWorker? = null
+
+        var connectingJob: Job? = null
+
+        fun changeState(s: State, msg: String? = null) {
+            if (state == s && msg == null) return
+            state = s
+        }
+    }
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/utils/DeviceStorageApp.kt

@@ -0,0 +1,18 @@
+package com.sail_tunnel.sail.utils
+
+import android.annotation.SuppressLint
+import android.app.Application
+import android.content.Context
+
+@SuppressLint("Registered")
+class DeviceStorageApp(context: Context) : Application() {
+    init {
+        attachBaseContext(context.createDeviceProtectedStorageContext())
+    }
+
+    /**
+     * Thou shalt not get the REAL underlying application context which would no longer be operating under device
+     * protected storage.
+     */
+    override fun getApplicationContext() = this
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/utils/TrafficStates.kt

@@ -0,0 +1,20 @@
+package com.sail_tunnel.sail.utils
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+data class TrafficStats(
+    // Bytes per second
+    var txRate: Long = 0L,
+    var rxRate: Long = 0L,
+
+    // Bytes for the current session
+    var txTotal: Long = 0L,
+    var rxTotal: Long = 0L
+) : Parcelable {
+    operator fun plus(other: TrafficStats) = TrafficStats(
+        txRate + other.txRate, rxRate + other.rxRate,
+        txTotal + other.txTotal, rxTotal + other.rxTotal
+    )
+}

source/android/app/src/main/kotlin/com/sail_tunnel/sail/utils/Utils.kt

@@ -0,0 +1,33 @@
+package com.sail_tunnel.sail.utils
+
+import android.annotation.SuppressLint
+import android.os.Build
+import kotlinx.coroutines.*
+import java.io.FileDescriptor
+import java.net.HttpURLConnection
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
+
+val Throwable.readableMessage: String get() = localizedMessage ?: javaClass.name
+
+/**
+ * https://android.googlesource.com/platform/prebuilts/runtime/+/94fec32/appcompat/hiddenapi-light-greylist.txt#9466
+ */
+@SuppressLint("DiscouragedPrivateApi")
+private val getInt = FileDescriptor::class.java.getDeclaredMethod("getInt$")
+val FileDescriptor.int get() = getInt.invoke(this) as Int
+
+suspend fun <T> HttpURLConnection.useCancellable(block: suspend HttpURLConnection.() -> T): T {
+    return suspendCancellableCoroutine { cont ->
+        cont.invokeOnCancellation {
+            if (Build.VERSION.SDK_INT >= 26) disconnect() else GlobalScope.launch(Dispatchers.IO) { disconnect() }
+        }
+        GlobalScope.launch(Dispatchers.IO) {
+            try {
+                cont.resume(block())
+            } catch (e: Throwable) {
+                cont.resumeWithException(e)
+            }
+        }
+    }
+}

source/android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

source/android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

source/android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

source/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

source/android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,10 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.sail_tunnel.sail">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
+</manifest>

source/android/build.gradle

@@ -0,0 +1,31 @@
+buildscript {
+    ext.kotlin_version = '1.6.10'
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:7.1.3'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+tasks.register("clean", Delete) {
+    delete rootProject.buildDir
+}

source/android/gradle.properties

@@ -0,0 +1,4 @@
+org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true
+android.suppressUnsupportedCompileSdk=33

source/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip

source/android/settings.gradle

@@ -0,0 +1,11 @@
+include ':app'
+
+def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
+def properties = new Properties()
+
+assert localPropertiesFile.exists()
+localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
+
+def flutterSdkPath = properties.getProperty("flutter.sdk")
+assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"

source/assets/Features.svg

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg viewBox="0 0 36 17.2" xmlns="http://www.w3.org/2000/svg">
+  <linearGradient id="a" gradientUnits="userSpaceOnUse" x1="-15.5" x2="59.992" y1="10" y2="75.024" gradientTransform="matrix(1.056419, 0, 0, 1, -59.971069, -0.317375)">
+    <stop offset="0" stop-color="#62c"/>
+    <stop offset="1" stop-color="#301060"/>
+  </linearGradient>
+  <g fill="url(#a)" transform="matrix(1, 0, 0, 1, -1.853645, -1.351658)">
+    <path d="M 27.827 3.42 C 27.585 3.297 27.307 3.264 27.043 3.327 C 26.77 3.396 26.527 3.551 26.349 3.771 L 24.595 5.858 L 21.485 2.156 C 21.231 1.853 20.885 1.683 20.526 1.683 C 20.166 1.683 19.821 1.853 19.567 2.156 L 16.457 5.858 L 14.703 3.771 C 14.526 3.552 14.282 3.397 14.009 3.329 C 13.745 3.266 13.468 3.299 13.225 3.421 C 12.977 3.543 12.765 3.75 12.616 4.015 C 12.465 4.289 12.387 4.598 12.388 4.912 L 12.388 13.459 C 12.388 14.529 12.746 15.555 13.382 16.312 C 14.018 17.069 14.88 17.494 15.779 17.496 L 25.273 17.496 C 26.173 17.494 27.034 17.069 27.67 16.312 C 28.306 15.555 28.663 14.529 28.664 13.459 L 28.664 4.912 C 28.664 4.592 28.585 4.281 28.436 4.015 C 28.298 3.759 28.086 3.552 27.827 3.42 L 27.827 3.42 Z"/>
+  </g>
+</svg>

source/assets/active.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="20" height="22" fill="none" viewBox="0 0 20 22">
+  <path fill="#AE77FF" d="M16.64 9.39a2.112 2.112 0 00-1.925 1.25h-.97L12.69 7.478a.859.859 0 00-1.64.035l-1.454 5.086L7.721 1.593a.86.86 0 00-1.68-.067L3.704 10.64H1.25v1.718h3.125a.86.86 0 00.834-.65l1.498-5.99 1.82 10.688a.86.86 0 00.8.718h.048a.86.86 0 00.826-.625l1.737-5.845.372 1.118a.859.859 0 00.815.586h1.59a2.11 2.11 0 101.926-2.968z"/>
+</svg>

source/assets/flags/hk.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 900 600"><path fill="#EE1C25" d="M0 0h900v600H0z"/><g id="a"><path d="M449.964 299.913c-105.263-44.486-58.602-181.581 42.07-174.69-20.366 10.467-23.318 29.997-11.687 48.09 13.024 20.256-1.2 52.848-18.806 60.767-28.935 13.025-34.728 47.75-11.577 65.833z" fill="#fff"/><path d="M444.272 200.92l-5.92 9.294-2.144-10.815-10.679-2.759 9.625-5.39-.671-10.999 8.085 7.49 10.256-4.043-4.61 10.01 7.001 8.505zm6.288 97.839c-12.731-6.534-22.996-20.155-27.468-36.431-5.115-18.67-2.173-38.743 8.083-55.038l-2.208-1.394c-10.64 16.929-13.693 37.743-8.386 57.12 4.728 17.221 15.214 31.097 28.787 38.064z" fill="#EE1C25"/></g><use xlink:href="#a" transform="rotate(72 450 300)"/><use xlink:href="#a" transform="rotate(144 450 300)"/><use xlink:href="#a" transform="rotate(216 450 300)"/><use xlink:href="#a" transform="rotate(288 450 300)"/></svg>

source/assets/flags/jp.svg

@@ -0,0 +1 @@
+<svg viewBox="0 0 900 600" xmlns="http://www.w3.org/2000/svg"><path d="m0 0h900v600h-900z" fill="#fff"/><circle cx="450" cy="300" fill="#bc002d" r="180"/></svg>

source/assets/flags/tw.svg

@@ -0,0 +1 @@
+<svg viewBox="0 0 900 600" xmlns="http://www.w3.org/2000/svg"><g fill-rule="evenodd"><path d="m0 0h900v600h-900z" fill="#fe0000"/><path d="m0 0h450v300h-450z" fill="#000095"/></g><g fill="#fff"><path d="m225 37.5-56.25 209.928 153.678-153.678-209.928 56.25 209.928 56.25-153.678-153.678 56.25 209.928 56.25-209.928-153.678 153.678 209.928-56.25-209.928-56.25 153.678 153.678z"/><circle cx="225" cy="150" r="60" stroke="#000095" stroke-width="7.5"/></g></svg>

source/assets/flags/us.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 7410 3900"><path fill="#b22234" d="M0 0h7410v3900H0z"/><path d="M0 450h7410m0 600H0m0 600h7410m0 600H0m0 600h7410m0 600H0" stroke="#fff" stroke-width="300"/><path fill="#3c3b6e" d="M0 0h2964v2100H0z"/><g fill="#fff"><g id="d"><g id="c"><g id="e"><g id="b"><path id="a" d="M247 90l70.534 217.082-184.66-134.164h228.253L176.466 307.082z"/><use xlink:href="#a" y="420"/><use xlink:href="#a" y="840"/><use xlink:href="#a" y="1260"/></g><use xlink:href="#a" y="1680"/></g><use xlink:href="#b" x="247" y="210"/></g><use xlink:href="#c" x="494"/></g><use xlink:href="#d" x="988"/><use xlink:href="#c" x="1976"/><use xlink:href="#e" x="2470"/></g></svg>

source/assets/history.svg

@@ -0,0 +1 @@
+<svg fill="none" height="20" viewBox="0 0 20 20" width="20" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><clipPath id="a"><path d="m0 0h20v20h-20z"/></clipPath><g clip-path="url(#a)" fill="#ae77ff"><path d="m10 5a.833.833 0 0 0 -.833.833v4.167c0 .221.088.433.244.59l2.5 2.5a.833.833 0 0 0 1.178-1.18l-2.256-2.255v-3.822a.833.833 0 0 0 -.833-.833z"/><path d="m19.844 8.443a10 10 0 0 0 -16.862-5.597v-2.013a.833.833 0 0 0 -1.667 0v3.334a1.667 1.667 0 0 0 1.667 1.666h3.333a.833.833 0 1 0 0-1.666h-2.292a8.325 8.325 0 1 1 -2.363 6.565.818.818 0 0 0 -.826-.732.839.839 0 0 0 -.834.917 10 10 0 1 0 19.84-2.474z"/></g></svg>

source/assets/home.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" fill="none" viewBox="0 0 22 22">
+  <path fill="#B5AEBE" d="M21.484 9.6l-7.79-8.422a3.667 3.667 0 00-5.385 0L.533 9.597A1.833 1.833 0 000 10.889v8.347a2.75 2.75 0 002.75 2.75h3.667v-5.5a4.57 4.57 0 012.409-4.01l.139-.075a4.55 4.55 0 01.528-.223c.124-.045.25-.084.379-.117.129-.034.285-.065.431-.092.081-.013.156-.04.239-.049a4.53 4.53 0 01.417-.017c.014 0 .027-.005.041-.005h.017c.283.002.566.031.845.086.03.006.062.009.091.015.262.057.517.137.765.239.035.013.07.026.104.042.237.102.465.225.68.366l.102.068c.21.146.407.309.59.487l.085.086c.179.184.343.382.49.592l.062.092c.144.219.27.45.375.69l.034.092c.104.253.186.515.243.784 0 .02.007.04.01.061.06.292.09.59.09.888v5.5h3.667a2.75 2.75 0 002.75-2.75v-8.36c0-.477-.185-.934-.516-1.277z"/>
+  <path fill="#B5AEBE" d="M11 13.736a2.75 2.75 0 00-2.75 2.75v5.5h5.5v-5.5a2.75 2.75 0 00-2.75-2.75z"/>
+</svg>

source/assets/id.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="17" height="15" fill="none" viewBox="0 0 17 15">
+  <path fill="#AE77FF" d="M3.727 15H.309V.781h3.418V15zm1.982 0V.781h4.58c1.257 0 2.386.287 3.39.86a5.934 5.934 0 012.343 2.412c.566 1.035.853 2.197.86 3.486v.654c0 1.302-.277 2.471-.83 3.506a6.03 6.03 0 01-2.325 2.422c-.996.58-2.11.872-3.34.879H5.71zM9.137 3.428v8.935h1.191c.984 0 1.739-.348 2.266-1.045.527-.703.791-1.744.791-3.125v-.615c0-1.374-.264-2.409-.79-3.105-.528-.697-1.296-1.045-2.306-1.045H9.138z"/>
+</svg>

source/assets/logo.svg

@@ -0,0 +1 @@
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source/assets/logo2.svg

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+<?xml version="1.0" encoding="utf-8"?>
+<svg viewBox="0 0 16.3 15.8" xmlns="http://www.w3.org/2000/svg">
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+    <stop offset="0" stop-color="#62c"/>
+    <stop offset="1" stop-color="#301060"/>
+  </linearGradient>
+  <g fill="url(#a)" transform="matrix(1, 0, 0, 1, -12.325989, -1.578)">
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+  </g>
+  <path d="M 12.276 0.128 L 12.956 0.128 L 12.956 7.651 L 12.218 7.651 L 8.427 1.317 L 8.427 7.651 L 7.712 7.651 L 7.712 0.128 L 8.509 0.128 L 12.276 6.368 Z" transform="matrix(1.86918, 0, 0, 0.767696, -11.240033, 5.053573)" style="fill: rgb(27, 27, 27); paint-order: fill; white-space: pre;"/>
+</svg>

source/assets/powOn.svg

@@ -0,0 +1 @@
+<svg fill="none" height="48" viewBox="0 0 46 48" width="46" xmlns="http://www.w3.org/2000/svg"><g fill="#ae77ff"><path d="m13.01 7.857c-.613-1.062-1.979-1.435-2.974-.719a22.2 22.2 0 1 0 25.928 0c-.995-.716-2.361-.343-2.974.719s-.239 2.409.738 3.15a17.76 17.76 0 1 1 -21.456 0c.977-.741 1.351-2.088.738-3.15z"/><rect height="14.8" rx="2.22" width="4.44" x="20.78"/></g></svg>

source/assets/profile.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="22" height="24" fill="none" viewBox="0 0 22 24">
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+</svg>

source/assets/settings.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="21" height="21" fill="none" viewBox="0 0 21 21">
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+  <path fill="#AE77FF" d="M10.5 14.347a4.312 4.312 0 114.313-4.313 4.268 4.268 0 01-4.313 4.313zm0-7.188a2.81 2.81 0 00-2.875 2.875 2.81 2.81 0 002.875 2.875 2.808 2.808 0 002.875-2.875A2.809 2.809 0 0010.5 7.159z"/>
+</svg>

source/assets/text2.svg

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg viewBox="0 0 82 18" xmlns="http://www.w3.org/2000/svg">
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+    </g>
+  </g>
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+</svg>

source/ios/.gitattributes

@@ -0,0 +1 @@
+*.a filter=lfs diff=lfs merge=lfs -text

source/ios/.gitignore

@@ -0,0 +1,33 @@
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+**/build/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3

source/ios/Flutter/AppFrameworkInfo.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>$(DEVELOPMENT_LANGUAGE)</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>12.0</string>
+</dict>
+</plist>

source/ios/Flutter/Debug.xcconfig

@@ -0,0 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"

source/ios/Flutter/Release.xcconfig

@@ -0,0 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"

source/ios/PacketTunnel/Info.plist

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>PacketTunnel</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(MARKETING_VERSION)</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSCameraUsageDescription</key>
+	<string>用于客服消息上传图片</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.networkextension.packet-tunnel</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).PacketTunnelProvider</string>
+	</dict>
+	<key>NSPhotoLibraryAddUsageDescription</key>
+	<string>用于客服消息上传图片</string>
+</dict>
+</plist>

source/ios/PacketTunnel/PacketTunnel.entitlements

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.developer.networking.networkextension</key>
+	<array>
+		<string>packet-tunnel-provider</string>
+	</array>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.com.vpntunnel.vpnzeus</string>
+	</array>
+</dict>
+</plist>

source/ios/Podfile

@@ -0,0 +1,49 @@
+# Uncomment this line to define a global platform for your project
+
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+platform :ios, '14.0'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
+end
+
+
+# 添加打印语句
+puts "Flutter Root Path: #{flutter_root}"
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+
+
+flutter_ios_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+  puts "flutter_install_all_ios_pods : #{File.dirname(File.realpath(__FILE__))}"
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_ios_build_settings(target)
+  end
+end

source/ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,950 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1273FB492B1EBCA4005B78AF /* leaf.xcframework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1273FB472B1EBC5E005B78AF /* leaf.xcframework */; };
+		1273FB4A2B1EBCA4005B78AF /* leaf.xcframework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 1273FB472B1EBC5E005B78AF /* leaf.xcframework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		2FD21F1125A363E300F556E0 /* PacketTunnelProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2FD21F1025A363E300F556E0 /* PacketTunnelProvider.swift */; };
+		2FD21F1625A363E300F556E0 /* PacketTunnel.appex in Embed App Extensions */ = {isa = PBXBuildFile; fileRef = 2FD21F0D25A363E300F556E0 /* PacketTunnel.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		2FD21F2425A364B700F556E0 /* NetworkExtension.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 2FD21EF825A363AA00F556E0 /* NetworkExtension.framework */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
+		3E06F985293FACBB00E04D92 /* PacketTunnelProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2FD21F1025A363E300F556E0 /* PacketTunnelProvider.swift */; };
+		3E06F989293FAFC600E04D92 /* LeafAdapter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3E06F988293FAFC600E04D92 /* LeafAdapter.swift */; };
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+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = 1;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Debug;
+		};
+		97C147071CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = U288ZP9B22;
+				ENABLE_BITCODE = NO;
+				FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)/Flutter",
+				);
+				INFOPLIST_FILE = Runner/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = UUVPN;
+				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.utilities";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				LIBRARY_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)/Flutter",
+				);
+				MODULEMAP_FILE = "${PROJECT_DIR}/LeafFFI/module.modulemap";
+				PRODUCT_BUNDLE_IDENTIFIER = com.vpntunnel.vpnzeus;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
+				SUPPORTS_MACCATALYST = NO;
+				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = YES;
+				SWIFT_INCLUDE_PATHS = "";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = 1;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		2FD21F1725A363E300F556E0 /* Build configuration list for PBXNativeTarget "PacketTunnel" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				2FD21F1825A363E300F556E0 /* Debug */,
+				2FD21F1925A363E300F556E0 /* Release */,
+				2FD21F1A25A363E300F556E0 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147031CF9000F007C117D /* Debug */,
+				97C147041CF9000F007C117D /* Release */,
+				249021D3217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+
+/* Begin XCRemoteSwiftPackageReference section */
+		C09CB0932C50B5DF0028C461 /* XCRemoteSwiftPackageReference "SwiftLoader" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/leoru/SwiftLoader";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 1.0.0;
+			};
+		};
+/* End XCRemoteSwiftPackageReference section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

source/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

source/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

source/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

source/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,14 @@
+{
+  "pins" : [
+    {
+      "identity" : "swiftloader",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/leoru/SwiftLoader",
+      "state" : {
+        "revision" : "3d03ac07764075bfab4c9ce9d5ba4556d6af350e",
+        "version" : "1.1.0"
+      }
+    }
+  ],
+  "version" : 2
+}

source/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

source/ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

source/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

source/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

source/ios/Runner.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,14 @@
+{
+  "pins" : [
+    {
+      "identity" : "swiftloader",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/leoru/SwiftLoader",
+      "state" : {
+        "revision" : "3d03ac07764075bfab4c9ce9d5ba4556d6af350e",
+        "version" : "1.1.0"
+      }
+    }
+  ],
+  "version" : 2
+}