chore: update xcode version in deploy.yml

* Feat: add Captha update service

* fixed fill captchaInfo from response

.github/workflows/deploy.yml

@@ -157,7 +157,7 @@ jobs:
       run: pip install "conan==2.28.0"
 
     - name: 'Build dependencies'
-      run: cmake -S . -B build -G "Visual Studio 17 2022" -DPREBUILTS_ONLY=1
+      run: cmake -S . -B build -DPREBUILTS_ONLY=1
     
     - name: 'Authorize in remote'
       if: github.ref == 'refs/heads/dev'
@@ -414,6 +414,10 @@ jobs:
       matrix:
         xcode-version: [16.2, 16.4, 26.4]
         include:
+          - xcode-version: 16.2
+            os: macos-15
+          - xcode-version: 16.4
+            os: macos-15
           - xcode-version: 26.4
             os: macos-26
 
@@ -450,7 +454,7 @@ jobs:
 # ------------------------------------------------------
 
   Build-MacOS:
-    runs-on: macos-latest
+    runs-on: macos-15
 
     needs: Bake-Prebuilts-MacOS
     if: ${{ always() }}
@@ -497,7 +501,7 @@ jobs:
     - name: 'Setup xcode'
       uses: maxim-lobanov/setup-xcode@v1
       with:
-        xcode-version: '16.2.0'
+        xcode-version: '26.0'
 
     - name: 'Install Qt'
       uses: jurplel/install-qt-action@v4
@@ -550,6 +554,10 @@ jobs:
       matrix:
         xcode-version: [16.2, 16.4, 26.4]
         include:
+          - xcode-version: 16.2
+            os: macos-15
+          - xcode-version: 16.4
+            os: macos-15
           - xcode-version: 26.4
             os: macos-26
 
@@ -586,7 +594,7 @@ jobs:
 # ------------------------------------------------------
 
   Build-MacOS-NE:
-    runs-on: macos-latest
+    runs-on: macos-26
 
     needs: Bake-Prebuilts-MacOS-NE
     if: ${{ always() }}
@@ -610,6 +618,12 @@ jobs:
       PREM_V1_ENDPOINT: ${{ secrets.PREM_V1_ENDPOINT }}
 
     steps:
+    - name: 'Get sources'
+      uses: actions/checkout@v4
+      with:
+        submodules: 'true'
+        fetch-depth: 10
+
     - uses: ./.github/actions/apple-setup-provisioning-profile
       with:
         provisioning_profile_base64: ${{ secrets.MAC_APP_PROVISIONING_PROFILE }}
@@ -647,12 +661,6 @@ jobs:
           go install golang.org/x/mobile/cmd/gomobile@latest
           gomobile init
 
-    - name: 'Get sources'
-      uses: actions/checkout@v4
-      with:
-        submodules: 'true'
-        fetch-depth: 10
-
     - name: 'Setup python'
       uses: actions/setup-python@v6
       with:

.gitmodules

@@ -7,9 +7,6 @@
 [submodule "client/3rd/amneziawg-apple"]
 	path = client/3rd/amneziawg-apple
 	url = https://github.com/amnezia-vpn/amneziawg-apple
-[submodule "client/3rd/QSimpleCrypto"]
-	path = client/3rd/QSimpleCrypto
-	url = https://github.com/amnezia-vpn/QSimpleCrypto.git
 [submodule "client/3rd/qtgamepad"]
 	path = client/3rd/qtgamepad
 	url = https://github.com/amnezia-vpn/qtgamepad.git

CMakeLists.txt

@@ -4,7 +4,7 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(PROJECT AmneziaVPN)
-set(AMNEZIAVPN_VERSION 4.9.0.2)
+set(AMNEZIAVPN_VERSION 4.9.0.4)
 
 set(QT_CREATOR_SKIP_PACKAGE_MANAGER_SETUP ON CACHE BOOL "" FORCE)
 set(CMAKE_PROJECT_TOP_LEVEL_INCLUDES
@@ -28,7 +28,7 @@ string(TIMESTAMP CURRENT_DATE "%Y-%m-%d")
 set(RELEASE_DATE "${CURRENT_DATE}")
 
 set(APP_MAJOR_VERSION ${CMAKE_PROJECT_VERSION_MAJOR}.${CMAKE_PROJECT_VERSION_MINOR}.${CMAKE_PROJECT_VERSION_PATCH})
-set(APP_ANDROID_VERSION_CODE 2123)
+set(APP_ANDROID_VERSION_CODE 2133)
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
     set(MZ_PLATFORM_NAME "linux")

README_RU.md

@@ -28,7 +28,7 @@
 
 - Простой в использовании — введите IP-адрес, SSH-логин и пароль, и Amnezia автоматически установит VPN-контейнеры Docker на ваш сервер и подключится к VPN.
 - Классические VPN-протоколы: OpenVPN, WireGuard и IKEv2.
-- Протоколы с маскировкой трафика (обфускацией): OpenVPN с плагином [Cloak](https://github.com/cbeuw/Cloak), Shadowsocks (OpenVPN over Shadowsocks), [AmneziaWG](https://docs.amnezia.org/documentation/amnezia-wg/) and XRay.
+- Протоколы с маскировкой трафика (обфускацией): OpenVPN с плагином [Cloak](https://github.com/cbeuw/Cloak), Shadowsocks (OpenVPN over Shadowsocks), [AmneziaWG](https://docs.amnezia.org/documentation/amnezia-wg/) и XRay.
 - Поддержка Split Tunneling — добавляйте любые сайты или приложения в список, чтобы включить VPN только для них.
 - Поддерживает платформы: Windows, macOS, Linux, Android, iOS.
 - Поддержка конфигурации протокола AmneziaWG на [бета-прошивке Keenetic](https://docs.keenetic.com/ua/air/kn-1611/en/6319-latest-development-release.html#UUID-186c4108-5afd-c10b-f38a-cdff6c17fab3_section-idm33192196168192-improved).

client/CMakeLists.txt

@@ -103,6 +103,7 @@ include(${CMAKE_CURRENT_LIST_DIR}/cmake/sources.cmake)
 include_directories(
     ${CMAKE_CURRENT_LIST_DIR}/../ipc
     ${CMAKE_CURRENT_LIST_DIR}/../common/logger
+    ${CMAKE_CURRENT_LIST_DIR}/../common/crypto
     ${CMAKE_CURRENT_LIST_DIR}
     ${CMAKE_CURRENT_BINARY_DIR}
 )
@@ -257,6 +258,10 @@ install(SCRIPT ${QT_DEPLOY_SCRIPT}
 
 if (APPLE AND NOT IOS AND NOT MACOS_NE)
     list(APPEND OVPN_SCRIPTS "${CMAKE_SOURCE_DIR}/deploy/data/macos/update-resolv-conf.sh")
+    set_target_properties(${PROJECT} PROPERTIES
+        XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED "NO"
+        XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED "NO"
+    )
 endif()
 if (LINUX AND NOT ANDROID)
     list(APPEND OVPN_SCRIPTS "${CMAKE_SOURCE_DIR}/deploy/data/linux/update-resolv-conf.sh")

client/amneziaApplication.cpp

@@ -22,6 +22,7 @@
 #include "logger.h"
 #include "ui/controllers/qml/pageController.h"
 #include "ui/models/installedAppsModel.h"
+#include "ui/utils/mtProxyPublicHostInput.h"
 #include "version.h"
 
 #include "platforms/ios/QRCodeReaderBase.h"
@@ -119,7 +120,13 @@ void AmneziaApplication::init()
                 win->setPersistentSceneGraph(true);
                 win->setPersistentGraphics(true);
 #endif
+#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
                 win->show();
+#else
+                if (!m_coreController || !m_coreController->pageController()->shouldStartMinimized()) {
+                    win->show();
+                }
+#endif
             }
         },
         Qt::QueuedConnection);
@@ -215,6 +222,9 @@ void AmneziaApplication::registerTypes()
 
     qmlRegisterType<InstalledAppsModel>("InstalledAppsModel", 1, 0, "InstalledAppsModel");
 
+    qmlRegisterType<PublicHostInputValidator>("MtProxyConfig", 1, 0, "PublicHostInputValidator");
+    qmlRegisterType<PublicHostInputValidator>("TelemtConfig", 1, 0, "PublicHostInputValidator");
+
     amnezia::declareQmlProtocolEnum();
     Vpn::declareQmlVpnConnectionStateEnum();
     PageLoader::declareQmlPageEnum();

client/android/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:type="linear"
+        android:angle="135"
+        android:startColor="#2A2A2E"
+        android:centerColor="#17171A"
+        android:endColor="#0E0E11" />
+</shape>

client/android/res/drawable/ic_launcher_monochrome.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+    android:drawable="@drawable/ic_amnezia_round"
+    android:insetLeft="19.5%"
+    android:insetTop="19.5%"
+    android:insetRight="19.5%"
+    android:insetBottom="19.5%" />

client/android/res/mipmap-anydpi-v26/icon.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_monochrome" />
+</adaptive-icon>

client/android/res/mipmap-anydpi-v26/icon_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_monochrome" />
+</adaptive-icon>

client/android/res/values-v31/styles.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="NoActionBar">
+        <item name="android:windowBackground">@color/black</item>
+        <item name="android:colorBackground">@color/black</item>
+        <item name="android:windowActionBar">false</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+        <item name="android:enforceNavigationBarContrast">false</item>
+        <item name="android:enforceStatusBarContrast">false</item>
+
+        <item name="android:windowSplashScreenBackground">@color/ic_launcher_background</item>
+        <item name="android:windowSplashScreenIconBackgroundColor">@color/ic_launcher_background</item>
+        <item name="android:windowSplashScreenAnimatedIcon">@mipmap/icon</item>
+    </style>
+</resources>

client/android/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#0E0E11</color>
+</resources>

client/android/src/org/amnezia/vpn/AmneziaActivity.kt

@@ -42,6 +42,7 @@ import androidx.core.view.OnApplyWindowInsetsListener
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsControllerCompat
+import java.io.File
 import java.io.IOException
 import kotlin.LazyThreadSafetyMode.NONE
 import kotlin.coroutines.CoroutineContext
@@ -763,7 +764,13 @@ class AmneziaActivity : QtActivity() {
     fun openFile(filter: String?) {
         Log.v(TAG, "Open file with filter: $filter")
         mainScope.launch {
-            val intent = if (!isOnTv()) {
+            val systemPickerPackage = listOf("com.google.android.documentsui", "com.android.documentsui")
+                .firstOrNull { pkg ->
+                    try { packageManager.getPackageInfo(pkg, 0); true }
+                    catch (_: PackageManager.NameNotFoundException) { false }
+                }
+
+            val intent = if (!isOnTv() && systemPickerPackage != null) {
                 val mimeTypes = if (!filter.isNullOrEmpty()) {
                     val extensionRegex = "\\*\\.([a-z0-9]+)".toRegex(IGNORE_CASE)
                     val mime = MimeTypeMap.getSingleton()
@@ -789,6 +796,7 @@ class AmneziaActivity : QtActivity() {
                             else -> type = "*/*"
                         }
                     }
+                    `package` = systemPickerPackage
                 }
             } else {
                 Intent(this@AmneziaActivity, TvFilePicker::class.java)
@@ -800,8 +808,11 @@ class AmneziaActivity : QtActivity() {
                         if (isOnTv() && it?.hasExtra("activityNotFound") == true) {
                             showNoFileBrowserAlertDialog()
                         }
-                        val uri = it?.data?.apply {
-                            grantUriPermission(packageName, this, Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                        val uri = it?.data?.let { u ->
+                            if (u.scheme == "content") {
+                                try { grantUriPermission(packageName, u, Intent.FLAG_GRANT_READ_URI_PERMISSION) } catch (_: Exception) {}
+                            }
+                            u
                         }?.toString() ?: ""
                         Log.v(TAG, "Open file: $uri")
                         if (uri.isNotEmpty()) {
@@ -841,7 +852,12 @@ class AmneziaActivity : QtActivity() {
         Log.v(TAG, "Get fd for $fileName")
         return blockingCall(Dispatchers.IO) {
             try {
-                pfd = contentResolver.openFileDescriptor(Uri.parse(fileName), "r")
+                val uri = Uri.parse(fileName)
+                pfd = if (uri.scheme == "file") {
+                    ParcelFileDescriptor.open(File(uri.path!!), ParcelFileDescriptor.MODE_READ_ONLY)
+                } else {
+                    contentResolver.openFileDescriptor(uri, "r")
+                }
                 pfd?.fd ?: -1
             } catch (e: Exception) {
                 Log.e(TAG, "Failed to get fd: $e")
@@ -1061,12 +1077,10 @@ class AmneziaActivity : QtActivity() {
     @Suppress("unused")
     fun sendTouch(x: Float, y: Float) {
         Log.v(TAG, "Send touch: $x, $y")
-        blockingCall {
-            findQtWindow(window.decorView)?.let {
-                Log.v(TAG, "Send touch to $it")
-                it.dispatchTouchEvent(createEvent(x, y, SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN))
-                it.dispatchTouchEvent(createEvent(x, y, SystemClock.uptimeMillis(), MotionEvent.ACTION_UP))
-            }
+        findQtWindow(window.decorView)?.let {
+            Log.v(TAG, "Send touch to $it")
+            it.dispatchTouchEvent(createEvent(x, y, SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN))
+            it.dispatchTouchEvent(createEvent(x, y, SystemClock.uptimeMillis(), MotionEvent.ACTION_UP))
         }
     }
 

client/android/src/org/amnezia/vpn/TvFilePicker.kt

@@ -1,30 +1,36 @@
 package org.amnezia.vpn
 
+import android.Manifest
+import android.app.AlertDialog
 import android.content.ActivityNotFoundException
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
+import android.net.Uri
 import android.os.Build
 import android.os.Bundle
+import android.os.Environment
 import androidx.activity.ComponentActivity
 import androidx.activity.result.contract.ActivityResultContracts
 import org.amnezia.vpn.util.Log
+import java.io.File
 
 private const val TAG = "TvFilePicker"
+private const val READ_STORAGE_REQUEST_CODE = 1001
 
 class TvFilePicker : ComponentActivity() {
 
-    private val fileChooseResultLauncher = registerForActivityResult(object : ActivityResultContracts.OpenDocument() {
+    // SAF launcher for Android 10+ where File API is blocked by scoped storage
+    private val safLauncher = registerForActivityResult(object : ActivityResultContracts.OpenDocument() {
         override fun createIntent(context: Context, input: Array<String>): Intent {
             val intent = super.createIntent(context, input)
-
-            val activitiesToResolveIntent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            val activities = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
                 context.packageManager.queryIntentActivities(intent, PackageManager.ResolveInfoFlags.of(PackageManager.MATCH_DEFAULT_ONLY.toLong()))
             } else {
                 @Suppress("DEPRECATION")
                 context.packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)
             }
-            if (activitiesToResolveIntent.all {
+            if (activities.all {
                     val name = it.activityInfo.packageName
                     name.startsWith("com.google.android.tv.frameworkpackagestubs") || name.startsWith("com.android.tv.frameworkpackagestubs")
                 }) {
@@ -32,38 +38,140 @@ class TvFilePicker : ComponentActivity() {
             }
             return intent
         }
-    }) {
+    }) { uri ->
         setResult(RESULT_OK, Intent().apply {
-            data = it
+            data = uri
             addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
         })
         finish()
     }
 
+    private val directoryStack = ArrayDeque<File>()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         Log.v(TAG, "onCreate")
-        getFile()
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            launchSaf()
+        } else {
+            checkPermissionAndBrowse()
+        }
     }
 
-    override fun onNewIntent(intent: Intent) {
-        super.onNewIntent(intent)
-        Log.v(TAG, "onNewIntent")
-        getFile()
+    @Deprecated("Deprecated in Java")
+    override fun onBackPressed() {
+        navigateBack()
     }
 
-    private fun getFile() {
+    private fun launchSaf() {
         try {
-            Log.v(TAG, "getFile")
-            fileChooseResultLauncher.launch(arrayOf("*/*"))
+            safLauncher.launch(arrayOf("*/*"))
         } catch (_: ActivityNotFoundException) {
-            Log.w(TAG, "Activity not found")
+            Log.w(TAG, "No SAF activity found")
             setResult(RESULT_CANCELED, Intent().apply { putExtra("activityNotFound", true) })
             finish()
         } catch (e: Exception) {
-            Log.e(TAG, "Failed to get file: $e")
+            Log.e(TAG, "SAF launch failed: $e")
             setResult(RESULT_CANCELED)
             finish()
         }
     }
+
+    private fun checkPermissionAndBrowse() {
+        if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+            requestPermissions(arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE), READ_STORAGE_REQUEST_CODE)
+        } else {
+            showRootDirectory()
+        }
+    }
+
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        if (requestCode == READ_STORAGE_REQUEST_CODE &&
+            grantResults.firstOrNull() == PackageManager.PERMISSION_GRANTED) {
+            showRootDirectory()
+        } else {
+            setResult(RESULT_CANCELED)
+            finish()
+        }
+    }
+
+    private fun showRootDirectory() {
+        @Suppress("DEPRECATION")
+        val primaryExternal = Environment.getExternalStorageDirectory()
+        val storageDir = File("/storage")
+        // Pre-seed stack with /storage so Back from primary storage goes there (USB drives etc.)
+        if (storageDir.exists() && storageDir.canonicalPath != primaryExternal.canonicalPath) {
+            directoryStack.addLast(storageDir)
+        }
+        showDirectory(primaryExternal)
+    }
+
+    private fun navigateBack() {
+        if (directoryStack.size > 1) {
+            directoryStack.removeLast()
+            val parent = directoryStack.removeLast()
+            showDirectory(parent)
+        } else {
+            setResult(RESULT_CANCELED)
+            finish()
+        }
+    }
+
+    private fun showDirectory(dir: File) {
+        directoryStack.addLast(dir)
+        Log.v(TAG, "Showing directory: ${dir.absolutePath}")
+
+        val entries = try {
+            dir.listFiles()
+                ?.sortedWith(compareBy({ !it.isDirectory }, { it.name.lowercase() }))
+                ?: emptyList()
+        } catch (e: Exception) {
+            Log.e(TAG, "Failed to list directory: $e")
+            emptyList()
+        }
+
+        val names = entries.map { if (it.isDirectory) "[${it.name}]" else it.name }.toTypedArray()
+
+        val builder = AlertDialog.Builder(this)
+            .setTitle(dir.absolutePath)
+
+        if (entries.isEmpty()) {
+            builder.setMessage("No files available")
+        } else {
+            builder.setItems(names) { dialog, which ->
+                dialog.dismiss()
+                val selected = entries[which]
+                if (selected.isDirectory) {
+                    showDirectory(selected)
+                } else {
+                    Log.v(TAG, "Selected file: ${selected.absolutePath}")
+                    setResult(RESULT_OK, Intent().apply {
+                        data = Uri.fromFile(selected)
+                        addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                    })
+                    finish()
+                }
+            }
+        }
+
+        if (directoryStack.size > 1) {
+            builder.setNegativeButton("↑ Back") { dialog, _ ->
+                dialog.dismiss()
+                navigateBack()
+            }
+        } else {
+            builder.setNegativeButton(android.R.string.cancel) { _, _ ->
+                setResult(RESULT_CANCELED)
+                finish()
+            }
+        }
+
+        builder.setOnCancelListener {
+            setResult(RESULT_CANCELED)
+            finish()
+        }
+
+        builder.show()
+    }
 }

client/cmake/3rdparty.cmake

@@ -2,9 +2,8 @@ set(CLIENT_ROOT_DIR ${CMAKE_CURRENT_LIST_DIR}/..)
 
 set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/Modules;${CMAKE_MODULE_PATH}")
 
-add_subdirectory(${CLIENT_ROOT_DIR}/3rd/SortFilterProxyModel)
+add_subdirectory(${CLIENT_ROOT_DIR}/3rd/SortFilterProxyModel ${CMAKE_BINARY_DIR}/3rd/SortFilterProxyModel)
 set(LIBS ${LIBS} SortFilterProxyModel)
-include(${CLIENT_ROOT_DIR}/cmake/QSimpleCrypto.cmake)
 
 include(${CLIENT_ROOT_DIR}/3rd/qrcodegen/qrcodegen.cmake)
 
@@ -12,20 +11,24 @@ add_compile_definitions(_WINSOCKAPI_)
 
 set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
 set(BUILD_WITH_QT6 ON)
-add_subdirectory(${CLIENT_ROOT_DIR}/3rd/qtkeychain EXCLUDE_FROM_ALL)
+add_subdirectory(${CLIENT_ROOT_DIR}/3rd/qtkeychain ${CMAKE_BINARY_DIR}/3rd/qtkeychain EXCLUDE_FROM_ALL)
 
 if(ANDROID)
     # Use qtgamepad from amnezia-vpn/qtgamepad repository
     # Only if Qt6CorePrivate is available (required by qtgamepad)
     find_package(Qt6CorePrivate CONFIG QUIET)
     if(Qt6CorePrivate_FOUND)
-        add_subdirectory(${CLIENT_ROOT_DIR}/3rd/qtgamepad)
+        add_subdirectory(${CLIENT_ROOT_DIR}/3rd/qtgamepad ${CMAKE_BINARY_DIR}/3rd/qtgamepad)
         # Link both the C++ module and QML plugin
-        if(TARGET GamepadLegacy)
+        if(TARGET ${PROJECT})
             target_link_libraries(${PROJECT} PRIVATE GamepadLegacy)
+        else()
+            list(APPEND LIBS GamepadLegacy)
         endif()
-        if(TARGET GamepadLegacyQuickPrivate)
+        if(TARGET ${PROJECT})
             target_link_libraries(${PROJECT} PRIVATE GamepadLegacyQuickPrivate)
+        else()
+            list(APPEND LIBS GamepadLegacyQuickPrivate)
         endif()
         message(STATUS "Gamepad support enabled for Android")
     else()
@@ -36,7 +39,6 @@ endif()
 set(LIBS ${LIBS} qt6keychain)
 
 include_directories(
-    ${CLIENT_ROOT_DIR}/3rd/QSimpleCrypto/src/include
     ${CLIENT_ROOT_DIR}/3rd/qtkeychain/qtkeychain
     ${CMAKE_CURRENT_BINARY_DIR}/3rd/qtkeychain
 )

client/cmake/QSimpleCrypto.cmake

@@ -1,21 +0,0 @@
-set(CLIENT_ROOT_DIR ${CMAKE_CURRENT_LIST_DIR}/..)
-set(QSIMPLECRYPTO_DIR ${CLIENT_ROOT_DIR}/3rd/QSimpleCrypto/src)
-
-include_directories(${QSIMPLECRYPTO_DIR})
-
-set(HEADERS ${HEADERS}
-    ${QSIMPLECRYPTO_DIR}/include/QAead.h
-    ${QSIMPLECRYPTO_DIR}/include/QBlockCipher.h
-    ${QSIMPLECRYPTO_DIR}/include/QRsa.h
-    ${QSIMPLECRYPTO_DIR}/include/QSimpleCrypto_global.h
-    ${QSIMPLECRYPTO_DIR}/include/QX509.h
-    ${QSIMPLECRYPTO_DIR}/include/QX509Store.h
-)
-
-set(SOURCES ${SOURCES}
-    ${QSIMPLECRYPTO_DIR}/sources/QAead.cpp
-    ${QSIMPLECRYPTO_DIR}/sources/QBlockCipher.cpp
-    ${QSIMPLECRYPTO_DIR}/sources/QRsa.cpp
-    ${QSIMPLECRYPTO_DIR}/sources/QX509.cpp
-    ${QSIMPLECRYPTO_DIR}/sources/QX509Store.cpp
-)

client/cmake/ios.cmake

@@ -121,6 +121,11 @@ target_sources(${PROJECT} PRIVATE
     ${CLIENT_ROOT_DIR}/platforms/ios/StoreKit2Helper.swift
 )
 
+set_source_files_properties(
+    ${CMAKE_CURRENT_SOURCE_DIR}/ios/app/Media.xcassets
+    PROPERTIES MACOSX_PACKAGE_LOCATION Resources
+)
+
 target_sources(${PROJECT} PRIVATE
     ${CMAKE_CURRENT_SOURCE_DIR}/ios/app/AmneziaVPNLaunchScreen.storyboard
     ${CMAKE_CURRENT_SOURCE_DIR}/ios/app/Media.xcassets

client/cmake/macos_ne.cmake

@@ -152,5 +152,5 @@ message(${QtCore_location})
 get_filename_component(QT_BIN_DIR_DETECTED "${QtCore_location}/../../../../../bin" ABSOLUTE)
 
 add_custom_command(TARGET ${PROJECT} POST_BUILD
-    COMMAND ${QT_BIN_DIR_DETECTED}/macdeployqt $<TARGET_BUNDLE_DIR:AmneziaVPN> -appstore-compliant -qmldir=${CMAKE_CURRENT_SOURCE_DIR}
+    COMMAND ${QT_BIN_DIR_DETECTED}/macdeployqt $<TARGET_BUNDLE_DIR:AmneziaVPN> -appstore-compliant -qmldir=${CMAKE_CURRENT_SOURCE_DIR} -no-codesign
 )

client/cmake/sources.cmake

@@ -52,13 +52,16 @@ set(HEADERS ${HEADERS}
     ${CLIENT_ROOT_DIR}/core/protocols/qmlRegisterProtocols.h
     ${CLIENT_ROOT_DIR}/ui/utils/pages.h
     ${CLIENT_ROOT_DIR}/ui/utils/qAutoStart.h
+    ${CLIENT_ROOT_DIR}/ui/utils/mtProxyPublicHostInput.h
     ${CLIENT_ROOT_DIR}/core/protocols/vpnProtocol.h
     ${CMAKE_CURRENT_BINARY_DIR}/version.h
     ${CLIENT_ROOT_DIR}/core/utils/selfhosted/sshClient.h
     ${CLIENT_ROOT_DIR}/core/utils/networkUtilities.h
+    ${CLIENT_ROOT_DIR}/core/utils/payloadSender.h
     ${CLIENT_ROOT_DIR}/core/utils/serialization/serialization.h
     ${CLIENT_ROOT_DIR}/core/utils/serialization/transfer.h
     ${CLIENT_ROOT_DIR}/../common/logger/logger.h
+    ${CLIENT_ROOT_DIR}/../common/crypto/cryptoUtils.h
     ${CLIENT_ROOT_DIR}/ui/utils/qmlUtils.h
     ${CLIENT_ROOT_DIR}/core/utils/api/apiUtils.h
     ${CLIENT_ROOT_DIR}/core/utils/osSignalHandler.h
@@ -127,9 +130,11 @@ set(SOURCES ${SOURCES}
     ${CLIENT_ROOT_DIR}/core/repositories/secureServersRepository.cpp
     ${CLIENT_ROOT_DIR}/core/repositories/secureAppSettingsRepository.cpp
     ${CLIENT_ROOT_DIR}/ui/utils/qAutoStart.cpp
+    ${CLIENT_ROOT_DIR}/ui/utils/mtProxyPublicHostInput.cpp
     ${CLIENT_ROOT_DIR}/core/protocols/vpnProtocol.cpp
     ${CLIENT_ROOT_DIR}/core/utils/selfhosted/sshClient.cpp
     ${CLIENT_ROOT_DIR}/core/utils/networkUtilities.cpp
+    ${CLIENT_ROOT_DIR}/core/utils/payloadSender.cpp
     ${CLIENT_ROOT_DIR}/core/utils/serialization/outbound.cpp
     ${CLIENT_ROOT_DIR}/core/utils/serialization/inbound.cpp
     ${CLIENT_ROOT_DIR}/core/utils/serialization/ss.cpp
@@ -139,6 +144,7 @@ set(SOURCES ${SOURCES}
     ${CLIENT_ROOT_DIR}/core/utils/serialization/vmess.cpp
     ${CLIENT_ROOT_DIR}/core/utils/serialization/vmess_new.cpp
     ${CLIENT_ROOT_DIR}/../common/logger/logger.cpp
+    ${CLIENT_ROOT_DIR}/../common/crypto/cryptoUtils.cpp
     ${CLIENT_ROOT_DIR}/ui/utils/qmlUtils.cpp
     ${CLIENT_ROOT_DIR}/core/utils/api/apiUtils.cpp
     ${CLIENT_ROOT_DIR}/core/utils/serverConfigUtils.cpp

client/core/configurators/xrayConfigurator.cpp

@@ -244,11 +244,7 @@ ErrorCode XrayConfigurator::applyServerSettingsToRemote(const ServerCredentials
                     << "container=" << static_cast<int>(container) << "host=" << credentials.hostName
                     << "transport=" << srv.transport << "security=" << srv.security << "port=" << srv.port
                     << "appendClient=" << appendNewClient;
-    QString flowValue = srv.flow;
-    if (flowValue.isEmpty() && srv.security == QLatin1String("reality")) {
-        flowValue = QStringLiteral("xtls-rprx-vision");
-    }
-
+    const QString flowValue = srv.flow;
     QString realityPublicKey;
     QString realityShortId;
     if (srv.security == QLatin1String("reality")) {
@@ -563,9 +559,12 @@ QJsonObject XrayConfigurator::buildStreamSettings(const XrayServerConfig &srv, c
         if (pad.obfsMode) {
             if (!pad.bytesMin.isEmpty() || !pad.bytesMax.isEmpty()) {
                 QJsonObject br;
-                br[QStringLiteral("from")] = pad.bytesMin.isEmpty() ? 1 : pad.bytesMin.toInt();
-                br[QStringLiteral("to")] = pad.bytesMax.isEmpty() ? (pad.bytesMin.isEmpty() ? 256 : pad.bytesMin.toInt())
-                                                                  : pad.bytesMax.toInt();
+                const int fromV = pad.bytesMin.isEmpty() ? 1 : pad.bytesMin.toInt();
+                int toV = pad.bytesMax.isEmpty() ? 256 : pad.bytesMax.toInt();
+                if (toV < fromV)
+                    toV = fromV;
+                br[QStringLiteral("from")] = fromV;
+                br[QStringLiteral("to")] = toV;
                 xo[QStringLiteral("xPaddingBytes")] = br;
             }
             xo[QStringLiteral("xPaddingKey")] = pad.key.isEmpty() ? QStringLiteral("x_padding") : pad.key;

client/core/controllers/api/newsController.cpp

@@ -78,7 +78,8 @@ QFuture<QPair<ErrorCode, QJsonArray>> NewsController::fetchNews()
             m_appSettingsRepository->getGatewayEndpoint(),
             m_appSettingsRepository->isDevGatewayEnv(),
             apiDefs::requestTimeoutMsecs,
-            m_appSettingsRepository->isStrictKillSwitchEnabled());
+            m_appSettingsRepository->isStrictKillSwitchEnabled(),
+            m_appSettingsRepository);
 
     QJsonObject payload;
     payload.insert("locale", m_appSettingsRepository->getAppLanguage().name().split("_").first());

client/core/controllers/api/servicesCatalogController.cpp

@@ -242,7 +242,7 @@ ErrorCode ServicesCatalogController::fillAvailableServices(QJsonObject &services
 ErrorCode ServicesCatalogController::executeRequest(const QString &endpoint, const QJsonObject &apiPayload, QByteArray &responseBody)
 {
     GatewayController gatewayController(m_appSettingsRepository->getGatewayEndpoint(), m_appSettingsRepository->isDevGatewayEnv(), apiDefs::requestTimeoutMsecs,
-                                        m_appSettingsRepository->isStrictKillSwitchEnabled());
+                                        m_appSettingsRepository->isStrictKillSwitchEnabled(), m_appSettingsRepository);
     return gatewayController.post(endpoint, apiPayload, responseBody);
 }
 

client/core/controllers/api/subscriptionController.cpp

@@ -56,6 +56,38 @@ QString getSubscriptionStatusForRenewal(const ApiConfig &apiConfig)
 
     return QStringLiteral("active");
 }
+
+QString normalizeCaptchaSolution(const QString &captchaSolution)
+{
+    QString normalizedSolution;
+    normalizedSolution.reserve(captchaSolution.size());
+    for (const QChar &ch : captchaSolution) {
+        const ushort u = ch.unicode();
+        if (u >= '0' && u <= '9') {
+            normalizedSolution += ch;
+        } else if (u >= 0xFF10 && u <= 0xFF19) {
+            normalizedSolution += QChar(static_cast<char16_t>(u - 0xFF10 + '0'));
+        }
+    }
+    return normalizedSolution.isEmpty() ? captchaSolution.trimmed() : normalizedSolution;
+}
+
+bool fillCaptchaInfoFromResponse(const QByteArray &responseBody, SubscriptionController::CaptchaInfo &captchaInfo)
+{
+    const QJsonDocument jsonDoc = QJsonDocument::fromJson(responseBody);
+    if (!jsonDoc.isObject()) {
+        return false;
+    }
+    const QJsonObject jsonObj = jsonDoc.object();
+    if (!jsonObj.contains(QStringLiteral("captcha_id")) || !jsonObj.contains(QStringLiteral("captcha_image"))) {
+        return false;
+    }
+    captchaInfo.captchaId = jsonObj.value(QStringLiteral("captcha_id")).toString();
+    captchaInfo.captchaImageBase64 = jsonObj.value(QStringLiteral("captcha_image")).toString();
+    captchaInfo.hint = jsonObj.value(QStringLiteral("hint")).toString();
+    captchaInfo.isRequired = true;
+    return true;
+}
 }
 
 
@@ -198,9 +230,6 @@ void SubscriptionController::updateApiConfigInJson(QJsonObject &serverConfigJson
     
     if (serverConfigJson.value(configKey::configVersion).toInt() == serverConfigUtils::ConfigSource::AmneziaGateway) {
         QJsonObject responseObj = QJsonDocument::fromJson(apiResponseBody).object();
-        if (responseObj.contains(apiDefs::key::supportedProtocols)) {
-            apiConfig.insert(apiDefs::key::supportedProtocols, responseObj.value(apiDefs::key::supportedProtocols).toArray());
-        }
         if (responseObj.contains(apiDefs::key::serviceInfo)) {
             apiConfig.insert(apiDefs::key::serviceInfo, responseObj.value(apiDefs::key::serviceInfo).toObject());
         }
@@ -212,7 +241,7 @@ void SubscriptionController::updateApiConfigInJson(QJsonObject &serverConfigJson
 ErrorCode SubscriptionController::executeRequest(const QString &endpoint, const QJsonObject &apiPayload, QByteArray &responseBody, bool isTestPurchase)
 {
     GatewayController gatewayController(m_appSettingsRepository->getGatewayEndpoint(isTestPurchase), m_appSettingsRepository->isDevGatewayEnv(isTestPurchase), apiDefs::requestTimeoutMsecs,
-                                        m_appSettingsRepository->isStrictKillSwitchEnabled());
+                                        m_appSettingsRepository->isStrictKillSwitchEnabled(), m_appSettingsRepository);
     return gatewayController.post(endpoint, apiPayload, responseBody);
 }
 
@@ -237,14 +266,7 @@ ErrorCode SubscriptionController::importServiceFromGateway(const QString &userCo
     ErrorCode errorCode = executeRequest(QString("%1v1/config"), apiPayload, responseBody);
 
     if (errorCode == ErrorCode::ApiCaptchaRequiredError) {
-        QJsonDocument jsonDoc = QJsonDocument::fromJson(responseBody);
-        if (jsonDoc.isObject()) {
-            QJsonObject jsonObj = jsonDoc.object();
-            captchaInfo.captchaId = jsonObj.value("captcha_id").toString();
-            captchaInfo.captchaImageBase64 = jsonObj.value("captcha_image").toString();
-            captchaInfo.hint = jsonObj.value("hint").toString();
-            captchaInfo.isRequired = true;
-        }
+        fillCaptchaInfoFromResponse(responseBody, captchaInfo);
         return errorCode;
     }
 
@@ -410,7 +432,8 @@ ErrorCode SubscriptionController::importServiceFromAppStore(const QString &userC
     return ErrorCode::NoError;
 }
 
-ErrorCode SubscriptionController::updateServiceFromGateway(const QString &serverId, const QString &newCountryCode, bool isConnectEvent)
+ErrorCode SubscriptionController::updateServiceFromGateway(const QString &serverId, const QString &newCountryCode, bool isConnectEvent,
+                                                           CaptchaInfo *captchaInfoOut, ProtocolData *usedProtocolDataOut)
 {
     auto apiV2 = m_serversRepository->apiV2Config(serverId);
     if (!apiV2.has_value()) {
@@ -418,8 +441,25 @@ ErrorCode SubscriptionController::updateServiceFromGateway(const QString &server
     }
     const bool isTestPurchase = apiV2->apiConfig.isTestPurchase;
     QString serviceProtocol = apiV2->serviceProtocol();
+
+    if (!newCountryCode.isEmpty()) {
+        const auto availableCountries = apiV2->apiConfig.availableCountries;
+        for (const auto &country : availableCountries) {
+            const auto countryObject = country.toObject();
+            if (countryObject.value(apiDefs::key::serverCountryCode).toString() != newCountryCode) {
+                continue;
+            }
+
+            const auto availableProtocols = countryObject.value(apiDefs::key::availableProtocols).toArray();
+            if (!availableProtocols.isEmpty() && !availableProtocols.contains(serviceProtocol)) {
+                serviceProtocol = availableProtocols.first().toString();
+            }
+            break;
+        }
+    }
+
     ProtocolData protocolData = generateProtocolData(serviceProtocol);
-    
+
     QJsonObject authDataJson = apiV2->authData.toJson();
     GatewayRequestData gatewayRequestData { QSysInfo::productType(),
                                             QString(APP_VERSION),
@@ -441,6 +481,11 @@ ErrorCode SubscriptionController::updateServiceFromGateway(const QString &server
     QByteArray responseBody;
     ErrorCode errorCode = executeRequest(QString("%1v1/config"), apiPayload, responseBody, isTestPurchase);
     if (errorCode != ErrorCode::NoError) {
+        if (errorCode == ErrorCode::ApiCaptchaRequiredError && captchaInfoOut) {
+            if (fillCaptchaInfoFromResponse(responseBody, *captchaInfoOut) && usedProtocolDataOut) {
+                *usedProtocolDataOut = protocolData;
+            }
+        }
         if (errorCode == ErrorCode::ApiSubscriptionExpiredError && !apiV2->apiConfig.isInAppPurchase) {
             ApiV2ServerConfig expiredApiV2 = *apiV2;
             expiredApiV2.apiConfig.subscriptionExpiredByServer = true;
@@ -450,29 +495,40 @@ ErrorCode SubscriptionController::updateServiceFromGateway(const QString &server
         return errorCode;
     }
 
+    return applyUpdatedServiceConfig(serverId, serviceProtocol, protocolData, responseBody);
+}
+
+ErrorCode SubscriptionController::applyUpdatedServiceConfig(const QString &serverId, const QString &serviceProtocol,
+                                                           const ProtocolData &protocolData, const QByteArray &responseBody)
+{
+    auto apiV2 = m_serversRepository->apiV2Config(serverId);
+    if (!apiV2.has_value()) {
+        return ErrorCode::InternalError;
+    }
+
     QJsonObject serverConfigJson;
-    errorCode = extractServerConfigJsonFromResponse(responseBody, serviceProtocol, protocolData, serverConfigJson);
+    ErrorCode errorCode = extractServerConfigJsonFromResponse(responseBody, serviceProtocol, protocolData, serverConfigJson);
     if (errorCode != ErrorCode::NoError) {
         return errorCode;
     }
-    
+
     updateApiConfigInJson(serverConfigJson, apiV2->apiConfig.serviceType, serviceProtocol, apiV2->apiConfig.userCountryCode, responseBody);
-    
+
     if (serverConfigJson.value(configKey::configVersion).toInt() != serverConfigUtils::ConfigSource::AmneziaGateway) {
         return ErrorCode::InternalError;
     }
 
     ApiV2ServerConfig newApiV2Config = ApiV2ServerConfig::fromJson(serverConfigJson);
     ApiV2ServerConfig* newApiV2 = &newApiV2Config;
-    
+
     newApiV2->apiConfig.vpnKey = apiV2->apiConfig.vpnKey;
     newApiV2->apiConfig.isTestPurchase = apiV2->apiConfig.isTestPurchase;
     newApiV2->apiConfig.isInAppPurchase = apiV2->apiConfig.isInAppPurchase;
     newApiV2->apiConfig.subscriptionExpiredByServer = false;
-    
+
     newApiV2->authData = apiV2->authData;
     newApiV2->crc = apiV2->crc;
-    
+
     if (apiV2->nameOverriddenByUser) {
         newApiV2->name = apiV2->name;
         newApiV2->displayName = apiV2->displayName;
@@ -484,6 +540,59 @@ ErrorCode SubscriptionController::updateServiceFromGateway(const QString &server
     return ErrorCode::NoError;
 }
 
+ErrorCode SubscriptionController::resolveUpdateServiceCaptcha(const QString &serverId, const QString &newCountryCode,
+                                                              bool isConnectEvent, const ProtocolData &protocolData,
+                                                              const QString &captchaId, const QString &captchaSolution,
+                                                              CaptchaInfo *retryCaptchaOut)
+{
+    auto apiV2 = m_serversRepository->apiV2Config(serverId);
+    if (!apiV2.has_value()) {
+        return ErrorCode::InternalError;
+    }
+    const bool isTestPurchase = apiV2->apiConfig.isTestPurchase;
+    QString serviceProtocol = apiV2->serviceProtocol();
+
+    QJsonObject authDataJson = apiV2->authData.toJson();
+    GatewayRequestData gatewayRequestData { QSysInfo::productType(),
+                                            QString(APP_VERSION),
+                                            m_appSettingsRepository->getAppLanguage().name().split("_").first(),
+                                            m_appSettingsRepository->getInstallationUuid(true),
+                                            apiV2->apiConfig.userCountryCode,
+                                            newCountryCode,
+                                            apiV2->serviceType(),
+                                            serviceProtocol,
+                                            authDataJson };
+
+    QJsonObject apiPayload = gatewayRequestData.toJsonObject();
+    appendProtocolDataToApiPayload(serviceProtocol, protocolData, apiPayload);
+
+    if (isConnectEvent) {
+        apiPayload[apiDefs::key::isConnectEvent] = true;
+    }
+
+    apiPayload["captcha_id"] = captchaId;
+    apiPayload["captcha_solution"] = normalizeCaptchaSolution(captchaSolution);
+
+    QByteArray responseBody;
+    ErrorCode errorCode = executeRequest(QString("%1v1/config"), apiPayload, responseBody, isTestPurchase);
+    if (errorCode != ErrorCode::NoError) {
+        if (retryCaptchaOut
+            && (errorCode == ErrorCode::ApiCaptchaInvalidError || errorCode == ErrorCode::ApiCaptchaRefreshError
+                || errorCode == ErrorCode::ApiCaptchaRequiredError)) {
+            fillCaptchaInfoFromResponse(responseBody, *retryCaptchaOut);
+        }
+        if (errorCode == ErrorCode::ApiSubscriptionExpiredError && !apiV2->apiConfig.isInAppPurchase) {
+            ApiV2ServerConfig expiredApiV2 = *apiV2;
+            expiredApiV2.apiConfig.subscriptionExpiredByServer = true;
+            m_serversRepository->editServer(serverId, expiredApiV2.toJson(),
+                                           serverConfigUtils::configTypeFromJson(expiredApiV2.toJson()));
+        }
+        return errorCode;
+    }
+
+    return applyUpdatedServiceConfig(serverId, serviceProtocol, protocolData, responseBody);
+}
+
 ErrorCode SubscriptionController::deactivateDevice(const QString &serverId)
 {
     auto apiV2 = m_serversRepository->apiV2Config(serverId);
@@ -648,19 +757,20 @@ ErrorCode SubscriptionController::prepareVpnKeyExport(const QString &serverId, Q
     return ErrorCode::NoError;
 }
 
-ErrorCode SubscriptionController::validateAndUpdateConfig(const QString &serverId, bool hasInstalledContainers)
+ErrorCode SubscriptionController::validateAndUpdateConfig(const QString &serverId, bool hasInstalledContainers,
+                                                         CaptchaInfo *captchaInfoOut, ProtocolData *usedProtocolDataOut)
 {
     if (!m_serversRepository->apiV2Config(serverId).has_value()) {
         return ErrorCode::NoError;
     }
 
     if (!hasInstalledContainers) {
-        return updateServiceFromGateway(serverId, "", true);
+        return updateServiceFromGateway(serverId, "", true, captchaInfoOut, usedProtocolDataOut);
     }
 
     if (isApiKeyExpired(serverId)) {
         qDebug() << "attempt to update api config by expires_at event";
-        return updateServiceFromGateway(serverId, "", true);
+        return updateServiceFromGateway(serverId, "", true, captchaInfoOut, usedProtocolDataOut);
     }
 
     return ErrorCode::NoError;
@@ -752,6 +862,36 @@ bool SubscriptionController::isVlessProtocol(const QString &serverId) const
     return apiV2.has_value() && apiV2->serviceProtocol() == "vless";
 }
 
+QString SubscriptionController::currentProtocol(const QString &serverId) const
+{
+    auto apiV2 = m_serversRepository->apiV2Config(serverId);
+    return apiV2.has_value() ? apiV2->serviceProtocol() : QString();
+}
+
+QStringList SubscriptionController::availableProtocols(const QString &serverId) const
+{
+    auto apiV2 = m_serversRepository->apiV2Config(serverId);
+    if (!apiV2.has_value()) {
+        return {};
+    }
+
+    const auto currentCountryCode = apiV2->apiConfig.serverCountryCode;
+    const auto availableCountries = apiV2->apiConfig.availableCountries;
+
+    QStringList protocols;
+    for (const auto &country : availableCountries) {
+        const auto countryObject = country.toObject();
+        if (countryObject.value(apiDefs::key::serverCountryCode).toString() != currentCountryCode) {
+            continue;
+        }
+        for (const auto &protocol : countryObject.value(apiDefs::key::availableProtocols).toArray()) {
+            protocols.push_back(protocol.toString());
+        }
+        break;
+    }
+    return protocols;
+}
+
 ErrorCode SubscriptionController::processAppStorePurchase(const QString &userCountryCode, const QString &serviceType,
                                                           const QString &serviceProtocol, const QString &productId,
                                                           int *duplicateServerIndex)
@@ -949,7 +1089,8 @@ QFuture<QPair<ErrorCode, QString>> SubscriptionController::getRenewalLink(const
     auto gatewayController = QSharedPointer<GatewayController>::create(m_appSettingsRepository->getGatewayEndpoint(isTestPurchase),
                                                                        m_appSettingsRepository->isDevGatewayEnv(isTestPurchase),
                                                                        apiDefs::requestTimeoutMsecs,
-                                                                       m_appSettingsRepository->isStrictKillSwitchEnabled());
+                                                                       m_appSettingsRepository->isStrictKillSwitchEnabled(),
+                                                                       m_appSettingsRepository);
     auto postFuture = gatewayController->postAsync(QString("%1v1/renewal_link"), apiPayload);
     auto *watcher = new QFutureWatcher<QPair<ErrorCode, QByteArray>>();
     QObject::connect(watcher, &QFutureWatcher<QPair<ErrorCode, QByteArray>>::finished,
@@ -993,17 +1134,7 @@ ErrorCode SubscriptionController::resolveImportServiceCaptcha(const QString &use
     appendProtocolDataToApiPayload(serviceProtocol, protocolData, apiPayload);
 
     apiPayload["captcha_id"] = captchaId;
-    QString normalizedSolution;
-    normalizedSolution.reserve(captchaSolution.size());
-    for (const QChar &ch : captchaSolution) {
-        const ushort u = ch.unicode();
-        if (u >= '0' && u <= '9') {
-            normalizedSolution += ch;
-        } else if (u >= 0xFF10 && u <= 0xFF19) {
-            normalizedSolution += QChar(static_cast<char16_t>(u - 0xFF10 + '0'));
-        }
-    }
-    apiPayload["captcha_solution"] = normalizedSolution.isEmpty() ? captchaSolution.trimmed() : normalizedSolution;
+    apiPayload["captcha_solution"] = normalizeCaptchaSolution(captchaSolution);
 
     QByteArray responseBody;
     ErrorCode errorCode = executeRequest(QString("%1v1/config"), apiPayload, responseBody);
@@ -1011,16 +1142,7 @@ ErrorCode SubscriptionController::resolveImportServiceCaptcha(const QString &use
         if (retryCaptchaOut
             && (errorCode == ErrorCode::ApiCaptchaInvalidError || errorCode == ErrorCode::ApiCaptchaRefreshError
                 || errorCode == ErrorCode::ApiCaptchaRequiredError)) {
-            const QJsonDocument jsonDoc = QJsonDocument::fromJson(responseBody);
-            if (jsonDoc.isObject()) {
-                const QJsonObject jsonObj = jsonDoc.object();
-                if (jsonObj.contains(QStringLiteral("captcha_id")) && jsonObj.contains(QStringLiteral("captcha_image"))) {
-                    retryCaptchaOut->captchaId = jsonObj.value(QStringLiteral("captcha_id")).toString();
-                    retryCaptchaOut->captchaImageBase64 = jsonObj.value(QStringLiteral("captcha_image")).toString();
-                    retryCaptchaOut->hint = jsonObj.value(QStringLiteral("hint")).toString();
-                    retryCaptchaOut->isRequired = true;
-                }
-            }
+            fillCaptchaInfoFromResponse(responseBody, *retryCaptchaOut);
         }
         return errorCode;
     }

client/core/controllers/api/subscriptionController.h

@@ -66,7 +66,12 @@ public:
                                         const QString &transactionId, bool isTestPurchase,
                                         int *duplicateServerIndex = nullptr);
 
-    ErrorCode updateServiceFromGateway(const QString &serverId, const QString &newCountryCode, bool isConnectEvent);
+    ErrorCode updateServiceFromGateway(const QString &serverId, const QString &newCountryCode, bool isConnectEvent,
+                                       CaptchaInfo *captchaInfoOut = nullptr, ProtocolData *usedProtocolDataOut = nullptr);
+
+    ErrorCode resolveUpdateServiceCaptcha(const QString &serverId, const QString &newCountryCode, bool isConnectEvent,
+                                          const ProtocolData &protocolData, const QString &captchaId,
+                                          const QString &captchaSolution, CaptchaInfo *retryCaptchaOut = nullptr);
 
     ErrorCode deactivateDevice(const QString &serverId);
 
@@ -78,7 +83,8 @@ public:
 
     ErrorCode prepareVpnKeyExport(const QString &serverId, QString &vpnKey);
 
-    ErrorCode validateAndUpdateConfig(const QString &serverId, bool hasInstalledContainers);
+    ErrorCode validateAndUpdateConfig(const QString &serverId, bool hasInstalledContainers,
+                                      CaptchaInfo *captchaInfoOut = nullptr, ProtocolData *usedProtocolDataOut = nullptr);
 
     void removeApiConfig(const QString &serverId);
 
@@ -86,6 +92,8 @@ public:
 
     void setCurrentProtocol(const QString &serverId, const QString &protocolName);
     bool isVlessProtocol(const QString &serverId) const;
+    QString currentProtocol(const QString &serverId) const;
+    QStringList availableProtocols(const QString &serverId) const;
 
     ErrorCode getAccountInfo(const QString &serverId, QJsonObject &accountInfo);
     QFuture<QPair<ErrorCode, QString>> getRenewalLink(const QString &serverId);
@@ -115,8 +123,10 @@ private:
     ErrorCode executeRequest(const QString &endpoint, const QJsonObject &apiPayload, QByteArray &responseBody, bool isTestPurchase = false);
     bool isApiKeyExpired(const QString &serverId) const;
     
-    ErrorCode extractServerConfigJsonFromResponse(const QByteArray &apiResponseBody, const QString &protocol, 
+    ErrorCode extractServerConfigJsonFromResponse(const QByteArray &apiResponseBody, const QString &protocol,
                                                    const ProtocolData &protocolData, QJsonObject &serverConfigJson);
+    ErrorCode applyUpdatedServiceConfig(const QString &serverId, const QString &serviceProtocol,
+                                        const ProtocolData &protocolData, const QByteArray &responseBody);
     void updateApiConfigInJson(QJsonObject &serverConfigJson, const QString &serviceType, 
                                 const QString &serviceProtocol, const QString &userCountryCode,
                                 const QByteArray &apiResponseBody);

client/core/controllers/connectionController.cpp

@@ -6,6 +6,7 @@
 #include "core/utils/protocolEnum.h"
 #include "core/protocols/protocolUtils.h"
 #include "core/utils/constants/configKeys.h"
+#include "core/utils/payloadSender.h"
 #include "core/utils/utilities.h"
 #include "core/utils/serverConfigUtils.h"
 #include "version.h"
@@ -106,7 +107,8 @@ ErrorCode ConnectionController::isConnectionSupported(const QString &serverId) c
         return ErrorCode::AmneziaServiceNotRunning;
     }
 
-    if (serverConfigUtils::isLegacyApiSubscription(m_serversRepository->serverKind(serverId))) {
+    const serverConfigUtils::ConfigType kind = m_serversRepository->serverKind(serverId);
+    if (serverConfigUtils::isLegacyApiSubscription(kind)) {
         return ErrorCode::LegacyApiV1NotSupportedError;
     }
 
@@ -117,6 +119,9 @@ ErrorCode ConnectionController::isConnectionSupported(const QString &serverId) c
     }
 
     if (container == DockerContainer::None) {
+        if (serverConfigUtils::isApiV2Subscription(kind)) {
+            return ErrorCode::NoError;
+        }
         return ErrorCode::NoInstalledContainersError;
     }
 
@@ -214,6 +219,11 @@ ErrorCode ConnectionController::openConnection(const QString &serverId)
         return errorCode;
     }
 
+    const auto apiV2 = m_serversRepository->apiV2Config(serverId);
+    if (apiV2.has_value() && !apiV2->sendPayload.isEmpty()) {
+        PayloadSender::sendAll(apiV2->sendPayload);
+    }
+
     emit openConnectionRequested(serverId, container, vpnConfiguration);
     return ErrorCode::NoError;
 }

client/core/controllers/coreController.cpp

@@ -22,7 +22,8 @@
 #endif
 
 CoreController::CoreController(const QSharedPointer<VpnConnection> &vpnConnection, SecureQSettings* settings,
-                               QQmlApplicationEngine *engine, QObject *parent)
+                               QQmlApplicationEngine *engine, QObject *parent,
+                               bool skipPlatformControllerInit)
     : QObject(parent), m_vpnConnection(vpnConnection), m_settings(settings), m_engine(engine)
 {
     initRepositories();
@@ -31,8 +32,10 @@ CoreController::CoreController(const QSharedPointer<VpnConnection> &vpnConnectio
     initControllers();
     initSignalHandlers();
 
-    initAndroidController();
-    initAppleController();
+    if (!skipPlatformControllerInit) {
+        initAndroidController();
+        initAppleController();
+    }
     initLogging();
 
     m_translator = new QTranslator(this);

client/core/controllers/coreController.h

@@ -90,7 +90,8 @@ class CoreController : public QObject
 
 public:
     explicit CoreController(const QSharedPointer<VpnConnection> &vpnConnection, SecureQSettings* settings,
-                            QQmlApplicationEngine *engine, QObject *parent = nullptr);
+                            QQmlApplicationEngine *engine, QObject *parent = nullptr,
+                            bool skipPlatformControllerInit = false);
 
     PageController* pageController() const;
     void setQmlRoot();
@@ -114,7 +115,7 @@ protected:
     AppSplitTunnelingModel* appSplitTunnelingModelProtected() const { return m_appSplitTunnelingModel; }
     IpSplitTunnelingModel* ipSplitTunnelingModelProtected() const { return m_ipSplitTunnelingModel; }
     LanguageModel* languageModelProtected() const { return m_languageModel; }
-
+    ConnectionUiController* connectionUiControllerProtected() const { return m_connectionUiController; }
     InstallUiController* installUiControllerProtected() const { return m_installUiController; }
     ImportController* importCoreControllerProtected() const { return m_importCoreController; }
     ExportController* exportControllerProtected() const { return m_exportController; }

client/core/controllers/coreSignalHandlers.cpp

@@ -1,6 +1,7 @@
 #include "coreSignalHandlers.h"
 
 #include <QTimer>
+#include <QtConcurrent>
 
 #include "core/utils/selfhosted/sshSession.h"
 #include "core/utils/errorCodes.h"
@@ -144,7 +145,9 @@ void CoreSignalHandlers::initExportControllerHandler()
             });
     connect(m_coreController->m_exportController, &ExportController::revokeClientRequested, this,
             [this](const QString &serverId, int row, DockerContainer container) {
-                m_coreController->m_usersController->revokeClient(serverId, row, container);
+                QtConcurrent::run([this, serverId, row, container]() {
+                    m_coreController->m_usersController->revokeClient(serverId, row, container);
+                });
             });
     connect(m_coreController->m_exportController, &ExportController::renameClientRequested, this,
             [this](const QString &serverId, int row, const QString &clientName, DockerContainer container) {
@@ -203,12 +206,12 @@ void CoreSignalHandlers::initAdminConfigRevokedHandler()
     connect(m_coreController->m_installController, &InstallController::clientRevocationRequested, this,
             [this](const QString &serverId, const ContainerConfig &containerConfig, DockerContainer container) {
                 m_coreController->m_usersController->revokeClient(serverId, containerConfig, container);
-            });
+            }, Qt::DirectConnection);
 
     connect(m_coreController->m_installController, &InstallController::clientAppendRequested, this,
             [this](const QString &serverId, const QString &clientId, const QString &clientName, DockerContainer container) {
                 m_coreController->m_usersController->appendClient(serverId, clientId, clientName, container);
-            });
+            }, Qt::DirectConnection);
 
     connect(m_coreController->m_usersController, &UsersController::adminConfigRevoked, m_coreController->m_installController,
             &InstallController::clearCachedProfile);
@@ -285,6 +288,8 @@ void CoreSignalHandlers::initClientManagementModelUpdateHandler()
             m_coreController->m_clientManagementModel, &ClientManagementModel::updateModel);
     connect(m_coreController->m_usersController, &UsersController::clientRenamed,
             m_coreController->m_clientManagementModel, &ClientManagementModel::updateClientName);
+    connect(m_coreController->m_usersController, &UsersController::revokeFinished,
+            m_coreController->m_exportController, &ExportController::revokeFinished);
 }
 
 void CoreSignalHandlers::initSitesModelUpdateHandler()

client/core/controllers/gatewayController.cpp

@@ -12,14 +12,14 @@
 #include <QPromise>
 #include <QUrl>
 
-#include "QBlockCipher.h"
-#include "QRsa.h"
+#include <openssl/rsa.h>
 
 #include "amneziaApplication.h"
+#include "core/repositories/secureAppSettingsRepository.h"
 #include "core/utils/api/apiUtils.h"
 #include "core/utils/constants/apiKeys.h"
 #include "core/utils/networkUtilities.h"
-#include "core/utils/utilities.h"
+#include "cryptoUtils.h"
 
 #ifdef AMNEZIA_DESKTOP
     #include "core/utils/ipcClient.h"
@@ -45,15 +45,75 @@ namespace
     constexpr QLatin1String unprocessableSubscriptionMessage("Failed to retrieve subscription information. Is it activated?");
 
     constexpr int proxyStorageRequestTimeoutMsecs = 3000;
+
+    QStringList shuffledProxyUrls(const QStringList &proxyUrls)
+    {
+        QStringList shuffled = proxyUrls;
+        std::random_device randomDevice;
+        std::mt19937 generator(randomDevice());
+        std::shuffle(shuffled.begin(), shuffled.end(), generator);
+        return shuffled;
+    }
+
+    QString getProxyUrlsCacheKey(const QString &serviceType, const QString &userCountryCode)
+    {
+        return QStringLiteral("service_%1_country_%2").arg(serviceType, userCountryCode);
+    }
+
+    bool decryptProxyUrlsPayload(const QByteArray &encryptedPayload, bool isDevEnvironment, QByteArray &decryptedPayload)
+    {
+        QByteArray key = isDevEnvironment ? DEV_AGW_PUBLIC_KEY : PROD_AGW_PUBLIC_KEY;
+        if (!isDevEnvironment) {
+            QCryptographicHash hash(QCryptographicHash::Sha512);
+            hash.addData(key);
+            QByteArray h = hash.result().toHex();
+
+            QByteArray decKey = QByteArray::fromHex(h.left(64));
+            QByteArray iv = QByteArray::fromHex(h.mid(64, 32));
+            QByteArray ba = QByteArray::fromBase64(encryptedPayload);
+
+            decryptedPayload = CryptoUtils::decryptAes256Cbc(ba, decKey, iv);
+            if (decryptedPayload.isEmpty()) {
+                return false;
+            }
+        } else {
+            decryptedPayload = encryptedPayload;
+        }
+        return true;
+    }
+
+    QStringList readCachedProxyUrls(const QByteArray &cachedProxyUrlsEncrypted, bool isDevEnvironment)
+    {
+        if (cachedProxyUrlsEncrypted.isEmpty()) {
+            return {};
+        }
+
+        QByteArray cachedProxyUrlsDecrypted;
+        if (!decryptProxyUrlsPayload(cachedProxyUrlsEncrypted, isDevEnvironment, cachedProxyUrlsDecrypted)) {
+            qCritical() << "error decrypting cached proxy urls payload";
+            return {};
+        }
+
+        QJsonArray endpointsArray = QJsonDocument::fromJson(cachedProxyUrlsDecrypted).array();
+        QStringList endpoints;
+        endpoints.reserve(endpointsArray.size());
+        for (const QJsonValue &endpoint : endpointsArray) {
+            endpoints.push_back(endpoint.toString());
+        }
+
+        return endpoints;
+    }
 }
 
 GatewayController::GatewayController(const QString &gatewayEndpoint, const bool isDevEnvironment, const int requestTimeoutMsecs,
-                                     const bool isStrictKillSwitchEnabled, QObject *parent)
+                                     const bool isStrictKillSwitchEnabled, SecureAppSettingsRepository *appSettingsRepository,
+                                     QObject *parent)
     : QObject(parent),
       m_gatewayEndpoint(gatewayEndpoint),
       m_isDevEnvironment(isDevEnvironment),
       m_requestTimeoutMsecs(requestTimeoutMsecs),
-      m_isStrictKillSwitchEnabled(isStrictKillSwitchEnabled)
+      m_isStrictKillSwitchEnabled(isStrictKillSwitchEnabled),
+      m_appSettingsRepository(appSettingsRepository)
 {
 }
 
@@ -87,40 +147,29 @@ GatewayController::EncryptedRequestData GatewayController::prepareRequest(const
     }
 #endif
 
-    QSimpleCrypto::QBlockCipher blockCipher;
-    encRequestData.key = blockCipher.generatePrivateSalt(32);
-    encRequestData.iv = blockCipher.generatePrivateSalt(32);
-    encRequestData.salt = blockCipher.generatePrivateSalt(8);
+    encRequestData.key = CryptoUtils::generateRandomBytes(32);
+    encRequestData.iv = CryptoUtils::generateRandomBytes(32);
+    encRequestData.salt = CryptoUtils::generateRandomBytes(8);
 
     QJsonObject keyPayload;
     keyPayload[apiDefs::key::aesKey] = QString(encRequestData.key.toBase64());
     keyPayload[apiDefs::key::aesIv] = QString(encRequestData.iv.toBase64());
     keyPayload[apiDefs::key::aesSalt] = QString(encRequestData.salt.toBase64());
 
-    QByteArray encryptedKeyPayload;
-    QByteArray encryptedApiPayload;
-    try {
-        QSimpleCrypto::QRsa rsa;
+    QByteArray rsaKey = m_isDevEnvironment ? DEV_AGW_PUBLIC_KEY : PROD_AGW_PUBLIC_KEY;
+    EVP_PKEY *publicKey = CryptoUtils::loadPublicKeyFromPem(rsaKey);
+    if (publicKey == nullptr) {
+        qCritical() << "error loading public key from environment variables";
+        encRequestData.errorCode = ErrorCode::ApiMissingAgwPublicKey;
+        return encRequestData;
+    }
 
-        EVP_PKEY *publicKey = nullptr;
-        try {
-            QByteArray rsaKey = m_isDevEnvironment ? DEV_AGW_PUBLIC_KEY : PROD_AGW_PUBLIC_KEY;
-            QSimpleCrypto::QRsa rsa;
-            publicKey = rsa.getPublicKeyFromByteArray(rsaKey);
-        } catch (...) {
-            Utils::logException();
-            qCritical() << "error loading public key from environment variables";
-            encRequestData.errorCode = ErrorCode::ApiMissingAgwPublicKey;
-            return encRequestData;
-        }
+    QByteArray encryptedKeyPayload = CryptoUtils::rsaEncrypt(QJsonDocument(keyPayload).toJson(), publicKey, RSA_PKCS1_PADDING);
+    EVP_PKEY_free(publicKey);
 
-        encryptedKeyPayload = rsa.encrypt(QJsonDocument(keyPayload).toJson(), publicKey, RSA_PKCS1_PADDING);
-        EVP_PKEY_free(publicKey);
+    QByteArray encryptedApiPayload = CryptoUtils::encryptAes256Cbc(QJsonDocument(apiPayload).toJson(), encRequestData.key, encRequestData.iv);
 
-        encryptedApiPayload = blockCipher.encryptAesBlockCipher(QJsonDocument(apiPayload).toJson(), encRequestData.key, encRequestData.iv,
-                                                                "", encRequestData.salt);
-    } catch (...) {
-        Utils::logException();
+    if (encryptedKeyPayload.isEmpty() || encryptedApiPayload.isEmpty()) {
         qCritical() << "error when encrypting the request body";
         encRequestData.errorCode = ErrorCode::ApiConfigDecryptionError;
         return encRequestData;
@@ -142,11 +191,11 @@ GatewayController::DecryptionResult GatewayController::tryDecryptResponseBody(co
     result.decryptedBody = encryptedResponseBody;
     result.isDecryptionSuccessful = false;
 
-    try {
-        QSimpleCrypto::QBlockCipher blockCipher;
-        result.decryptedBody = blockCipher.decryptAesBlockCipher(encryptedResponseBody, key, iv, "", salt);
+    QByteArray decrypted = CryptoUtils::decryptAes256Cbc(encryptedResponseBody, key, iv);
+    if (!decrypted.isEmpty()) {
+        result.decryptedBody = decrypted;
         result.isDecryptionSuccessful = true;
-    } catch (...) {
+    } else {
         result.decryptedBody = encryptedResponseBody;
         result.isDecryptionSuccessful = false;
     }
@@ -265,7 +314,6 @@ QFuture<QPair<ErrorCode, QByteArray>> GatewayController::postAsync(const QString
             }
 
             if (!decryptionResult.isDecryptionSuccessful) {
-                Utils::logException();
                 qCritical() << "error when decrypting the request body";
                 promise->addResult(qMakePair(ErrorCode::ApiConfigDecryptionError, QByteArray()));
                 promise->finish();
@@ -308,8 +356,9 @@ QFuture<QPair<ErrorCode, QByteArray>> GatewayController::postAsync(const QString
             QStringList proxyStorageUrls;
             appendStorageUrls(primaryBaseUrls, proxyStorageUrls);
             appendStorageUrls(fallbackBaseUrls, proxyStorageUrls);
+            const QString proxyUrlsCacheKey = getProxyUrlsCacheKey(serviceType, userCountryCode);
 
-            getProxyUrlsAsync(proxyStorageUrls, 0, [this, encRequestData, endpoint, processResponse](const QStringList &proxyUrls) {
+            getProxyUrlsAsync(proxyStorageUrls, 0, proxyUrlsCacheKey, [this, encRequestData, endpoint, processResponse](const QStringList &proxyUrls) {
                 getProxyUrlAsync(proxyUrls, 0, [this, encRequestData, endpoint, processResponse](const QString &proxyUrl) {
                     bypassProxyAsync(endpoint, proxyUrl, encRequestData,
                                      [processResponse, this](const QByteArray &decryptedBody, bool isDecryptionSuccessful,
@@ -355,8 +404,6 @@ QStringList GatewayController::getProxyUrls(const QString &serviceType, const QS
     std::shuffle(primaryBaseUrls.begin(), primaryBaseUrls.end(), generator);
     std::shuffle(fallbackBaseUrls.begin(), fallbackBaseUrls.end(), generator);
 
-    QByteArray key = m_isDevEnvironment ? DEV_AGW_PUBLIC_KEY : PROD_AGW_PUBLIC_KEY;
-
     auto appendStorageUrls = [&serviceType, &userCountryCode](const QStringList &baseUrls, QStringList &target) {
         if (!serviceType.isEmpty()) {
             for (const auto &baseUrl : baseUrls) {
@@ -372,10 +419,12 @@ QStringList GatewayController::getProxyUrls(const QString &serviceType, const QS
     QStringList proxyStorageUrls;
     appendStorageUrls(primaryBaseUrls, proxyStorageUrls);
     appendStorageUrls(fallbackBaseUrls, proxyStorageUrls);
+    const QString proxyUrlsCacheKey = getProxyUrlsCacheKey(serviceType, userCountryCode);
+    const QByteArray cachedProxyUrlsEncrypted = m_appSettingsRepository->readGatewayProxyUrls(proxyUrlsCacheKey);
 
     if (proxyStorageUrls.empty()) {
         qDebug() << "empty storage endpoint list";
-        return {};
+        return readCachedProxyUrls(cachedProxyUrlsEncrypted, m_isDevEnvironment);
     }
 
     for (const auto &proxyStorageUrl : proxyStorageUrls) {
@@ -390,26 +439,8 @@ QStringList GatewayController::getProxyUrls(const QString &serviceType, const QS
             auto encryptedResponseBody = reply->readAll();
             reply->deleteLater();
 
-            EVP_PKEY *privateKey = nullptr;
             QByteArray responseBody;
-            try {
-                if (!m_isDevEnvironment) {
-                    QCryptographicHash hash(QCryptographicHash::Sha512);
-                    hash.addData(key);
-                    QByteArray hashResult = hash.result().toHex();
-
-                    QByteArray key = QByteArray::fromHex(hashResult.left(64));
-                    QByteArray iv = QByteArray::fromHex(hashResult.mid(64, 32));
-
-                    QByteArray ba = QByteArray::fromBase64(encryptedResponseBody);
-
-                    QSimpleCrypto::QBlockCipher blockCipher;
-                    responseBody = blockCipher.decryptAesBlockCipher(ba, key, iv);
-                } else {
-                    responseBody = encryptedResponseBody;
-                }
-            } catch (...) {
-                Utils::logException();
+            if (!decryptProxyUrlsPayload(encryptedResponseBody, m_isDevEnvironment, responseBody)) {
                 qCritical() << "error loading private key from environment variables or decrypting payload" << encryptedResponseBody;
                 continue;
             }
@@ -420,6 +451,8 @@ QStringList GatewayController::getProxyUrls(const QString &serviceType, const QS
             for (const auto &endpoint : endpointsArray) {
                 endpoints.push_back(endpoint.toString());
             }
+            m_appSettingsRepository->writeGatewayProxyUrls(proxyUrlsCacheKey, encryptedResponseBody);
+
             return endpoints;
         } else {
             auto replyError = reply->error();
@@ -431,7 +464,7 @@ QStringList GatewayController::getProxyUrls(const QString &serviceType, const QS
             reply->deleteLater();
         }
     }
-    return {};
+    return readCachedProxyUrls(cachedProxyUrlsEncrypted, m_isDevEnvironment);
 }
 
 bool GatewayController::shouldBypassProxy(const QNetworkReply::NetworkError &replyError, const QByteArray &decryptedResponseBody,
@@ -573,10 +606,12 @@ void GatewayController::bypassProxy(const QString &endpoint, const QString &serv
 }
 
 void GatewayController::getProxyUrlsAsync(const QStringList proxyStorageUrls, const int currentProxyStorageIndex,
-                                          std::function<void(const QStringList &)> onComplete)
+                                          const QString &proxyUrlsCacheKey, std::function<void(const QStringList &)> onComplete)
 {
+    const QByteArray cachedProxyUrlsEncrypted = m_appSettingsRepository->readGatewayProxyUrls(proxyUrlsCacheKey);
+
     if (currentProxyStorageIndex >= proxyStorageUrls.size()) {
-        onComplete({});
+        onComplete(shuffledProxyUrls(readCachedProxyUrls(cachedProxyUrlsEncrypted, m_isDevEnvironment)));
         return;
     }
 
@@ -589,33 +624,17 @@ void GatewayController::getProxyUrlsAsync(const QStringList proxyStorageUrls, co
 
     // connect(reply, &QNetworkReply::sslErrors, this, [state](const QList<QSslError> &e) { *(state->sslErrors) = e; });
 
-    connect(reply, &QNetworkReply::finished, this, [this, proxyStorageUrls, currentProxyStorageIndex, onComplete, reply]() {
+    connect(reply, &QNetworkReply::finished, this,
+            [this, proxyStorageUrls, currentProxyStorageIndex, proxyUrlsCacheKey, onComplete, reply]() {
         if (reply->error() == QNetworkReply::NoError) {
             QByteArray encrypted = reply->readAll();
             reply->deleteLater();
 
             QByteArray responseBody;
-            try {
-                QByteArray key = m_isDevEnvironment ? DEV_AGW_PUBLIC_KEY : PROD_AGW_PUBLIC_KEY;
-                if (!m_isDevEnvironment) {
-                    QCryptographicHash hash(QCryptographicHash::Sha512);
-                    hash.addData(key);
-                    QByteArray h = hash.result().toHex();
-
-                    QByteArray decKey = QByteArray::fromHex(h.left(64));
-                    QByteArray iv = QByteArray::fromHex(h.mid(64, 32));
-                    QByteArray ba = QByteArray::fromBase64(encrypted);
-
-                    QSimpleCrypto::QBlockCipher cipher;
-                    responseBody = cipher.decryptAesBlockCipher(ba, decKey, iv);
-                } else {
-                    responseBody = encrypted;
-                }
-            } catch (...) {
-                Utils::logException();
+            if (!decryptProxyUrlsPayload(encrypted, m_isDevEnvironment, responseBody)) {
                 qCritical() << "error decrypting payload";
                 QMetaObject::invokeMethod(
-                        this, [=]() { getProxyUrlsAsync(proxyStorageUrls, currentProxyStorageIndex + 1, onComplete); }, Qt::QueuedConnection);
+                        this, [=]() { getProxyUrlsAsync(proxyStorageUrls, currentProxyStorageIndex + 1, proxyUrlsCacheKey, onComplete); }, Qt::QueuedConnection);
                 return;
             }
 
@@ -623,13 +642,9 @@ void GatewayController::getProxyUrlsAsync(const QStringList proxyStorageUrls, co
             QStringList endpoints;
             for (const QJsonValue &endpoint : endpointsArray)
                 endpoints.push_back(endpoint.toString());
+            m_appSettingsRepository->writeGatewayProxyUrls(proxyUrlsCacheKey, encrypted);
 
-            QStringList shuffled = endpoints;
-            std::random_device randomDevice;
-            std::mt19937 generator(randomDevice());
-            std::shuffle(shuffled.begin(), shuffled.end(), generator);
-
-            onComplete(shuffled);
+            onComplete(shuffledProxyUrls(endpoints));
             return;
         }
 
@@ -638,7 +653,7 @@ void GatewayController::getProxyUrlsAsync(const QStringList proxyStorageUrls, co
         qDebug() << "go to the next storage endpoint";
         reply->deleteLater();
         QMetaObject::invokeMethod(
-                this, [=]() { getProxyUrlsAsync(proxyStorageUrls, currentProxyStorageIndex + 1, onComplete); }, Qt::QueuedConnection);
+                this, [=]() { getProxyUrlsAsync(proxyStorageUrls, currentProxyStorageIndex + 1, proxyUrlsCacheKey, onComplete); }, Qt::QueuedConnection);
     });
 }
 

client/core/controllers/gatewayController.h

@@ -16,13 +16,16 @@
     #include "platforms/ios/ios_controller.h"
 #endif
 
+class SecureAppSettingsRepository;
+
 class GatewayController : public QObject
 {
     Q_OBJECT
 
 public:
     explicit GatewayController(const QString &gatewayEndpoint, const bool isDevEnvironment, const int requestTimeoutMsecs,
-                               const bool isStrictKillSwitchEnabled, QObject *parent = nullptr);
+                               const bool isStrictKillSwitchEnabled, SecureAppSettingsRepository *appSettingsRepository,
+                               QObject *parent = nullptr);
 
     amnezia::ErrorCode post(const QString &endpoint, const QJsonObject apiPayload, QByteArray &responseBody);
     QFuture<QPair<amnezia::ErrorCode, QByteArray>> postAsync(const QString &endpoint, const QJsonObject apiPayload);
@@ -55,7 +58,7 @@ private:
                      std::function<bool(QNetworkReply *reply, const QList<QSslError> &sslErrors)> replyProcessingFunction);
 
     void getProxyUrlsAsync(const QStringList proxyStorageUrls, const int currentProxyStorageIndex,
-                           std::function<void(const QStringList &)> onComplete);
+                           const QString &proxyUrlsCacheKey, std::function<void(const QStringList &)> onComplete);
     void getProxyUrlAsync(const QStringList proxyUrls, const int currentProxyIndex, std::function<void(const QString &)> onComplete);
     void bypassProxyAsync(
             const QString &endpoint, const QString &proxyUrl, EncryptedRequestData encRequestData,
@@ -65,6 +68,7 @@ private:
     QString m_gatewayEndpoint;
     bool m_isDevEnvironment = false;
     bool m_isStrictKillSwitchEnabled = false;
+    SecureAppSettingsRepository *m_appSettingsRepository = nullptr;
 
     inline static QString m_proxyUrl;
 };

client/core/controllers/selfhosted/exportController.h

@@ -48,6 +48,7 @@ signals:
     void appendClientRequested(const QString &serverId, const QString &clientId, const QString &clientName, DockerContainer container);
     void updateClientsRequested(const QString &serverId, DockerContainer container);
     void revokeClientRequested(const QString &serverId, int row, DockerContainer container);
+    void revokeFinished(ErrorCode errorCode);
     void renameClientRequested(const QString &serverId, int row, const QString &clientName, DockerContainer container);
 
 public slots:

client/core/controllers/selfhosted/installController.cpp

@@ -2,6 +2,7 @@
 
 #include "core/models/protocolConfig.h"
 
+#include <QCoreApplication>
 #include <QDebug>
 #include <QEventLoop>
 #include <QFutureWatcher>
@@ -20,7 +21,6 @@
 #include "core/installers/sftpInstaller.h"
 #include "core/installers/socks5Installer.h"
 #include "core/installers/mtProxyInstaller.h"
-#include "core/configurators/xrayConfigurator.h"
 #include "core/installers/telemtInstaller.h"
 #include "core/installers/torInstaller.h"
 #include "core/installers/wireguardInstaller.h"
@@ -103,7 +103,7 @@ ErrorCode InstallController::setupContainer(const ServerCredentials &credentials
                                             bool isUpdate)
 {
     qDebug().noquote() << "InstallController::setupContainer" << ContainerUtils::containerToString(container);
-    SshSession sshSession(this);
+    SshSession sshSession;
     ErrorCode e = ErrorCode::NoError;
 
     e = isUserInSudo(credentials, sshSession);
@@ -168,11 +168,11 @@ ErrorCode InstallController::updateServerConfig(const QString &serverId, DockerC
         }
         if (container == DockerContainer::MtProxy) {
             ServerCredentials credentials = adminConfig->credentials();
-            SshSession sshSession(this);
+            SshSession sshSession;
             MtProxyInstaller::uploadClientSettingsSnapshot(sshSession, credentials, container, newConfig);
         } else if (container == DockerContainer::Telemt) {
             ServerCredentials credentials = adminConfig->credentials();
-            SshSession sshSession(this);
+            SshSession sshSession;
             TelemtInstaller::uploadClientSettingsSnapshot(sshSession, credentials, container, newConfig);
         }
         adminConfig->updateContainerConfig(container, newConfig);
@@ -188,21 +188,11 @@ ErrorCode InstallController::updateServerConfig(const QString &serverId, DockerC
     if (!credentials.isValid()) {
         return ErrorCode::InternalError;
     }
-    SshSession sshSession(this);
+    SshSession sshSession;
 
     bool reinstallRequired = isReinstallContainerRequired(container, oldConfig, newConfig);
     qDebug() << "InstallController::updateServerConfig for container" << container << "reinstall required is" << reinstallRequired;
 
-    bool xrayServerSettingsChanged = false;
-    if (container == DockerContainer::Xray || container == DockerContainer::SSXray) {
-        const auto *oldXrayConfig = oldConfig.getXrayProtocolConfig();
-        const auto *newXrayConfig = newConfig.getXrayProtocolConfig();
-        if (oldXrayConfig && newXrayConfig) {
-            xrayServerSettingsChanged =
-                    !oldXrayConfig->serverConfig.hasEqualServerSettings(newXrayConfig->serverConfig);
-        }
-    }
-
     ErrorCode errorCode = ErrorCode::NoError;
     if (reinstallRequired) {
         errorCode = setupContainer(credentials, container, newConfig, true);
@@ -211,20 +201,11 @@ ErrorCode InstallController::updateServerConfig(const QString &serverId, DockerC
         if (errorCode == ErrorCode::NoError) {
             errorCode = startupContainerWorker(credentials, container, newConfig, sshSession);
         }
-    }
 
-    const bool skipXrayInboundSync =
-            newConfig.getXrayProtocolConfig() && newConfig.getXrayProtocolConfig()->serverConfig.isThirdPartyConfig;
-
-    if (errorCode == ErrorCode::NoError && xrayServerSettingsChanged && !skipXrayInboundSync) {
-        DnsSettings dnsSettings = { m_appSettingsRepository->primaryDns(), m_appSettingsRepository->secondaryDns() };
-        XrayConfigurator xrayConfigurator(&sshSession);
-        qDebug() << "InstallController::updateServerConfig applying Xray server inbound sync, reinstall="
-                 << reinstallRequired;
-        errorCode = xrayConfigurator.applyServerSettingsToRemote(credentials, container, newConfig, dnsSettings, false);
-        if (errorCode != ErrorCode::NoError) {
-            qDebug() << "InstallController::updateServerConfig Xray inbound sync failed, error="
-                     << static_cast<int>(errorCode);
+        if (errorCode == ErrorCode::NoError
+            && (container == DockerContainer::MtProxy || container == DockerContainer::Telemt)) {
+            const QString containerName = ContainerUtils::containerToString(container);
+            errorCode = sshSession.runScript(credentials, "sudo docker restart " + containerName);
         }
     }
 
@@ -234,7 +215,9 @@ ErrorCode InstallController::updateServerConfig(const QString &serverId, DockerC
         } else if (container == DockerContainer::Telemt) {
             TelemtInstaller::uploadClientSettingsSnapshot(sshSession, credentials, container, newConfig);
         }
-        clearCachedProfile(serverId, container);
+        if (reinstallRequired) {
+            clearCachedProfile(serverId, container);
+        }
         adminConfig->updateContainerConfig(container, newConfig);
         m_serversRepository->editServer(serverId, adminConfig->toJson(), serverConfigUtils::ConfigType::SelfHostedAdmin);
     }
@@ -714,13 +697,7 @@ bool InstallController::isReinstallContainerRequired(DockerContainer container,
         const auto *newXrayConfig = newConfig.getXrayProtocolConfig();
 
         if (oldXrayConfig && newXrayConfig) {
-            const QString oldPort = oldXrayConfig->serverConfig.port.isEmpty()
-                    ? QString(protocols::xray::defaultPort)
-                    : oldXrayConfig->serverConfig.port;
-            const QString newPort = newXrayConfig->serverConfig.port.isEmpty()
-                    ? QString(protocols::xray::defaultPort)
-                    : newXrayConfig->serverConfig.port;
-            if (oldPort != newPort) {
+            if (!oldXrayConfig->serverConfig.hasEqualServerSettings(newXrayConfig->serverConfig)) {
                 return true;
             }
         }
@@ -737,18 +714,6 @@ bool InstallController::isReinstallContainerRequired(DockerContainer container,
             if (oldPort != newPort) {
                 return true;
             }
-            const QString oldTransport = oldMt->transportMode.isEmpty() ? QString(
-                    protocols::mtProxy::transportModeStandard)
-                                                                        : oldMt->transportMode;
-            const QString newTransport = newMt->transportMode.isEmpty() ? QString(
-                    protocols::mtProxy::transportModeStandard)
-                                                                        : newMt->transportMode;
-            if (oldTransport != newTransport) {
-                return true;
-            }
-            if (oldMt->tlsDomain != newMt->tlsDomain) {
-                return true;
-            }
         }
     }
 
@@ -763,39 +728,6 @@ bool InstallController::isReinstallContainerRequired(DockerContainer container,
             if (oldPort != newPort) {
                 return true;
             }
-            const QString oldTransport = oldT->transportMode.isEmpty()
-                    ? QString(protocols::telemt::transportModeStandard)
-                    : oldT->transportMode;
-            const QString newTransport = newT->transportMode.isEmpty()
-                    ? QString(protocols::telemt::transportModeStandard)
-                    : newT->transportMode;
-            if (oldTransport != newTransport) {
-                return true;
-            }
-            if (oldT->tlsDomain != newT->tlsDomain) {
-                return true;
-            }
-            if (oldT->maskEnabled != newT->maskEnabled) {
-                return true;
-            }
-            if (oldT->tlsEmulation != newT->tlsEmulation) {
-                return true;
-            }
-            if (oldT->useMiddleProxy != newT->useMiddleProxy) {
-                return true;
-            }
-            if (oldT->tag != newT->tag) {
-                return true;
-            }
-            const QString oldUser = oldT->userName.isEmpty()
-                    ? QString::fromUtf8(protocols::telemt::defaultUserName)
-                    : oldT->userName;
-            const QString newUser = newT->userName.isEmpty()
-                    ? QString::fromUtf8(protocols::telemt::defaultUserName)
-                    : newT->userName;
-            if (oldUser != newUser) {
-                return true;
-            }
         }
     }
 
@@ -835,6 +767,20 @@ ErrorCode InstallController::installDockerWorker(const ServerCredentials &creden
 
     qDebug().noquote() << "InstallController::installDockerWorker" << stdOut;
 
+    if (container == DockerContainer::MtProxy || container == DockerContainer::Telemt) {
+        QString conntrackOut;
+        auto cbConntrack = [&](const QString &data, libssh::Client &) {
+            conntrackOut += data + "\n";
+            return ErrorCode::NoError;
+        };
+        sshSession.runScript(
+                credentials,
+                sshSession.replaceVars(amnezia::scriptData(SharedScriptType::install_conntrack),
+                                       amnezia::genBaseVars(credentials, DockerContainer::None, QString(), QString())),
+                cbConntrack, cbConntrack);
+        qDebug().noquote() << "InstallController::installDockerWorker install_conntrack:" << conntrackOut;
+    }
+
     if (container == DockerContainer::Awg2) {
         QRegularExpression kernelVersionRegex(R"(Linux\s+(\d+)\.(\d+)[^\d]*)");
         QRegularExpressionMatch match = kernelVersionRegex.match(stdOut);
@@ -981,7 +927,7 @@ ErrorCode InstallController::rebootServer(const QString &serverId)
     if (!credentials.isValid()) {
         return ErrorCode::InternalError;
     }
-    SshSession sshSession(this);
+    SshSession sshSession;
 
     QString script = QString("sudo reboot");
 
@@ -1009,7 +955,7 @@ ErrorCode InstallController::removeAllContainers(const QString &serverId)
     if (!credentials.isValid()) {
         return ErrorCode::InternalError;
     }
-    SshSession sshSession(this);
+    SshSession sshSession;
     ErrorCode errorCode = sshSession.runScript(credentials, amnezia::scriptData(SharedScriptType::remove_all_containers));
 
     if (errorCode == ErrorCode::NoError) {
@@ -1031,7 +977,7 @@ ErrorCode InstallController::removeContainer(const QString &serverId, DockerCont
     if (!credentials.isValid()) {
         return ErrorCode::InternalError;
     }
-    SshSession sshSession(this);
+    SshSession sshSession;
     const amnezia::ScriptVars removeContainerVars =
             amnezia::genBaseVars(credentials, container, QString(), QString());
     const bool removeDataVolume = (container == DockerContainer::MtProxy || container == DockerContainer::Telemt);
@@ -1140,7 +1086,7 @@ ErrorCode InstallController::scanServerForInstalledContainers(const QString &ser
     if (!credentials.isValid()) {
         return ErrorCode::InternalError;
     }
-    SshSession sshSession(this);
+    SshSession sshSession;
 
     QMap<DockerContainer, ContainerConfig> installedContainers;
     ErrorCode errorCode = getAlreadyInstalledContainers(credentials, installedContainers, sshSession);
@@ -1183,7 +1129,7 @@ ErrorCode InstallController::scanServerForInstalledContainers(const QString &ser
 ErrorCode InstallController::installServer(const ServerCredentials &credentials, DockerContainer container, int port,
                                            TransportProto transportProto, bool &wasContainerInstalled)
 {
-    SshSession sshSession(this);
+    SshSession sshSession;
     QMap<DockerContainer, ContainerConfig> installedContainers;
     ErrorCode errorCode = getAlreadyInstalledContainers(credentials, installedContainers, sshSession);
     if (errorCode) {
@@ -1252,7 +1198,7 @@ ErrorCode InstallController::installContainer(const QString &serverId, DockerCon
     if (!credentials.isValid()) {
         return ErrorCode::InternalError;
     }
-    SshSession sshSession(this);
+    SshSession sshSession;
     
     QMap<DockerContainer, ContainerConfig> installedContainers;
     ErrorCode errorCode = getAlreadyInstalledContainers(credentials, installedContainers, sshSession);
@@ -1294,7 +1240,7 @@ ErrorCode InstallController::installContainer(const QString &serverId, DockerCon
 ErrorCode InstallController::checkSshConnection(ServerCredentials &credentials, QString &output,
                                                 std::function<QString()> passphraseCallback)
 {
-    SshSession sshSession(this);
+    SshSession sshSession;
     ErrorCode errorCode = ErrorCode::NoError;
 
     if (credentials.secretData.contains("BEGIN") && credentials.secretData.contains("PRIVATE KEY")) {
@@ -1575,7 +1521,7 @@ ErrorCode InstallController::setDockerContainerEnabledState(const QString &serve
         return ErrorCode::InternalError;
     }
     const QString containerName = ContainerUtils::containerToString(container);
-    SshSession sshSession(this);
+    SshSession sshSession;
     const QString script = enabled ? QStringLiteral("sudo docker start %1").arg(containerName)
                                    : QStringLiteral("sudo docker stop %1").arg(containerName);
     const ErrorCode runError = sshSession.runScript(credentials, script);
@@ -1615,7 +1561,7 @@ ErrorCode InstallController::queryDockerContainerStatus(const QString &serverId,
         stdOut += data;
         return ErrorCode::NoError;
     };
-    SshSession sshSession(this);
+    SshSession sshSession;
     const QString script = QStringLiteral(
             "sudo docker inspect --format '{{.State.Status}}' %1 2>/dev/null || echo 'not_found'")
             .arg(containerName);
@@ -1649,7 +1595,7 @@ ErrorCode InstallController::queryMtProxyDiagnostics(const QString &serverId, Do
     if (!credentials.isValid()) {
         return ErrorCode::InternalError;
     }
-    SshSession sshSession(this);
+    SshSession sshSession;
     return MtProxyInstaller::queryDiagnostics(sshSession, credentials, container, listenPort, out);
 }
 
@@ -1672,7 +1618,7 @@ QString InstallController::fetchDockerContainerSecret(const QString &serverId, D
         stdOut += data;
         return ErrorCode::NoError;
     };
-    SshSession sshSession(this);
+    SshSession sshSession;
     const QString path = QStringLiteral("/data/secret");
     const QString cmd = QStringLiteral("sudo docker exec %1 cat %2").arg(containerName, path);
     const ErrorCode errorCode = sshSession.runScript(credentials, cmd, cbReadStdOut);

client/core/controllers/selfhosted/usersController.cpp

@@ -698,7 +698,7 @@ ErrorCode UsersController::revokeXray(const int row,
 
     QString restartScript = QString("sudo docker restart $CONTAINER_NAME");
     error = sshSession->runScript(
-        credentials, 
+        credentials,
         sshSession->replaceVars(restartScript, amnezia::genBaseVars(credentials, container, QString(), QString()))
     );
     if (error != ErrorCode::NoError) {
@@ -758,14 +758,17 @@ ErrorCode UsersController::revokeClient(const QString &serverId, const int index
         ContainerConfig containerCfg = adminConfig->containerConfig(container);
         QString containerClientId = containerCfg.protocolConfig.clientId();
 
-        if (!clientId.isEmpty() && !containerClientId.isEmpty() && containerClientId.contains(clientId)) {
+        const bool isAdminMatch = !clientId.isEmpty() && !containerClientId.isEmpty() && containerClientId.contains(clientId);
+        if (isAdminMatch) {
             emit adminConfigRevoked(serverId, container);
         }
 
         emit clientRevoked(index);
-        emit clientsUpdated(m_clientsTable);
     }
 
+    emit clientsUpdated(m_clientsTable);
+    emit revokeFinished(errorCode);
+
     return errorCode;
 }
 

client/core/controllers/selfhosted/usersController.h

@@ -37,6 +37,7 @@ signals:
     void clientAdded(const QJsonObject &client);
     void clientRenamed(int row, const QString &newName);
     void clientRevoked(int row);
+    void revokeFinished(ErrorCode errorCode);
     void adminConfigRevoked(const QString &serverId, DockerContainer container);
 
 public slots:

client/core/controllers/updateController.cpp

@@ -95,7 +95,8 @@ void UpdateController::fetchGatewayUrl()
     auto gatewayController = QSharedPointer<GatewayController>::create(m_appSettingsRepository->getGatewayEndpoint(),
                                                                        m_appSettingsRepository->isDevGatewayEnv(),
                                                                        7000,
-                                                                       m_appSettingsRepository->isStrictKillSwitchEnabled());
+                                                                       m_appSettingsRepository->isStrictKillSwitchEnabled(),
+                                                                       m_appSettingsRepository);
 
     QJsonObject apiPayload;
     apiPayload[apiDefs::key::cliVersion] = QString(APP_VERSION);

client/core/installers/mtProxyInstaller.cpp

@@ -71,48 +71,62 @@ ErrorCode MtProxyInstaller::queryDiagnostics(SshSession &sshSession, const Serve
                                              DockerContainer container, int listenPort,
                                              MtProxyContainerDiagnostics &out)
 {
-    out = {};
-    if (container != DockerContainer::MtProxy && container != DockerContainer::Telemt) {
-        return ErrorCode::InternalError;
-    }
-    const QString containerName = ContainerUtils::containerToString(container);
-    const QString script =
-            QStringLiteral(
-                    "PORT_OK=$(sudo docker exec %1 sh -c 'ss -tlnp 2>/dev/null | grep -q :%2 && echo yes || echo no' 2>/dev/null || echo no); "
-                    "TG_OK=$(curl -s --max-time 5 -o /dev/null -w '%%{http_code}' https://core.telegram.org/getProxySecret 2>/dev/null | grep -q '200' && echo yes || echo no); "
-                    "CLIENTS=$(sudo docker exec amnezia-mtproxy sh -c 'curl -s --max-time 3 http://localhost:2398/stats 2>/dev/null | grep -o \"total_special_connections:[0-9]*\" | cut -d: -f2' 2>/dev/null); "
-                    "CONF_TIME=$(sudo docker exec amnezia-mtproxy sh -c 'stat -c \"%%y\" /data/proxy-multi.conf 2>/dev/null | cut -d. -f1' 2>/dev/null || echo unknown); "
-                    "echo \"PORT_OK=${PORT_OK}\"; "
-                    "echo \"TG_OK=${TG_OK}\"; "
-                    "echo \"CLIENTS=${CLIENTS:-0}\"; "
-                    "echo \"CONF_TIME=${CONF_TIME}\"; "
-                    "echo \"STATS=http://localhost:2398/stats\";")
-                    .arg(containerName)
-                    .arg(listenPort);
+    out = { };
+    if (container == DockerContainer::MtProxy || container == DockerContainer::Telemt) {
+        const QString containerName = ContainerUtils::containerToString(container);
+        const bool isTelemt = container == DockerContainer::Telemt;
 
-    QString stdOut;
-    auto cbReadStdOut = [&](const QString &data, libssh::Client &) {
-        stdOut += data;
-        return ErrorCode::NoError;
-    };
-    const ErrorCode errorCode = sshSession.runScript(credentials, script, cbReadStdOut);
-    if (errorCode != ErrorCode::NoError) {
-        return errorCode;
-    }
-    for (const QString &line : stdOut.split('\n', Qt::SkipEmptyParts)) {
-        if (line.startsWith(QLatin1String("PORT_OK="))) {
-            out.portReachable = line.mid(8).trimmed() == QLatin1String("yes");
-        } else if (line.startsWith(QLatin1String("TG_OK="))) {
-            out.upstreamReachable = line.mid(6).trimmed() == QLatin1String("yes");
-        } else if (line.startsWith(QLatin1String("CLIENTS="))) {
-            out.clientsConnected = line.mid(8).trimmed().toInt();
-        } else if (line.startsWith(QLatin1String("CONF_TIME="))) {
-            out.lastConfigRefresh = line.mid(10).trimmed();
-        } else if (line.startsWith(QLatin1String("STATS="))) {
-            out.statsEndpoint = line.mid(6).trimmed();
+        const QString sportFilter = QString::number(listenPort);
+        const QString peersCmd = QStringLiteral("sudo conntrack -L -p tcp --dport ") + sportFilter
+                + QStringLiteral(" 2>/dev/null | grep ESTABLISHED | awk '{for(i=1;i<=NF;i++) if($i ~ /^src=/){print "
+                                 "substr($i,5); break}}'");
+        const QString publicFilter = QStringLiteral(" | grep -vE "
+                                                    "'^(10\\.|127\\.|169\\.254\\.|192\\.168\\.|172\\.(1[6-9]|2[0-9]|3["
+                                                    "01])\\.|::1$|fe80:|f[cd][0-9a-f][0-9a-f]:)'");
+        const QString clientsCmd =
+                QStringLiteral("CLIENTS=$(") + peersCmd + publicFilter + QStringLiteral(" | sort -u | grep -c .); ");
+        const QString confFile =
+                isTelemt ? QStringLiteral("/data/config.toml") : QStringLiteral("/data/proxy-multi.conf");
+        const QString statsUrl = QString();
+
+        const QString script = QStringLiteral("CN=") + containerName + QStringLiteral("; ")
+                + QStringLiteral("PORT_OK=$(sudo ss -tlnp 2>/dev/null | grep -q :") + QString::number(listenPort)
+                + QStringLiteral(" && echo yes || echo no); ")
+                + QStringLiteral("TG_OK=$(curl -s --max-time 5 -o /dev/null -w '%{http_code}' "
+                                 "https://core.telegram.org/getProxySecret 2>/dev/null | grep -q '200' && echo yes || "
+                                 "echo no); ")
+                + clientsCmd + QStringLiteral("CONF_TIME=$(sudo docker exec \"$CN\" sh -c 'stat -c \"%y\" ") + confFile
+                + QStringLiteral(" 2>/dev/null | cut -d. -f1' 2>/dev/null || echo unknown); ")
+                + QStringLiteral("echo \"PORT_OK=${PORT_OK}\"; ") + QStringLiteral("echo \"TG_OK=${TG_OK}\"; ")
+                + QStringLiteral("echo \"CLIENTS=${CLIENTS:-0}\"; ") + QStringLiteral("echo \"CONF_TIME=${CONF_TIME}\"; ")
+                + QStringLiteral("echo \"STATS=") + statsUrl + QStringLiteral("\";");
+
+        QString stdOut;
+        auto cbReadStdOut = [&](const QString &data, libssh::Client &) {
+            stdOut += data;
+            return ErrorCode::NoError;
+        };
+        const ErrorCode errorCode = sshSession.runScript(credentials, script, cbReadStdOut);
+        if (errorCode != ErrorCode::NoError) {
+            return errorCode;
         }
+        for (const QString &line : stdOut.split('\n', Qt::SkipEmptyParts)) {
+            if (line.startsWith(QLatin1String("PORT_OK="))) {
+                out.portReachable = line.mid(8).trimmed() == QLatin1String("yes");
+            } else if (line.startsWith(QLatin1String("TG_OK="))) {
+                out.upstreamReachable = line.mid(6).trimmed() == QLatin1String("yes");
+            } else if (line.startsWith(QLatin1String("CLIENTS="))) {
+                out.clientsConnected = line.mid(8).trimmed().toInt();
+            } else if (line.startsWith(QLatin1String("CONF_TIME="))) {
+                out.lastConfigRefresh = line.mid(10).trimmed();
+            } else if (line.startsWith(QLatin1String("STATS="))) {
+                out.statsEndpoint = line.mid(6).trimmed();
+            }
+        }
+        return ErrorCode::NoError;
     }
-    return ErrorCode::NoError;
+
+    return ErrorCode::InternalError;
 }
 
 void MtProxyInstaller::uploadClientSettingsSnapshot(SshSession &sshSession, const ServerCredentials &credentials,

client/core/models/api/apiConfig.cpp

@@ -144,10 +144,6 @@ QJsonObject ApiConfig::toJson() const
         obj[apiDefs::key::availableCountries] = availableCountries;
     }
     
-    if (!supportedProtocols.isEmpty()) {
-        obj[apiDefs::key::supportedProtocols] = supportedProtocols;
-    }
-    
     QJsonObject serviceInfoObj = serviceInfo.toJson();
     if (!serviceInfoObj.isEmpty()) {
         obj[apiDefs::key::serviceInfo] = serviceInfoObj;
@@ -198,7 +194,6 @@ ApiConfig ApiConfig::fromJson(const QJsonObject& json)
     config.issuedConfigs = json.value(apiDefs::key::issuedConfigs).toInt(0);
     
     config.availableCountries = json.value(apiDefs::key::availableCountries).toArray();
-    config.supportedProtocols = json.value(apiDefs::key::supportedProtocols).toArray();
     
     QJsonObject serviceInfoObj = json.value(apiDefs::key::serviceInfo).toObject();
     if (!serviceInfoObj.isEmpty()) {

client/core/models/api/apiConfig.h

@@ -34,7 +34,6 @@ struct ApiConfig
     int maxDeviceCount;
     int issuedConfigs;
     QJsonArray availableCountries;
-    QJsonArray supportedProtocols;
     
     struct ServiceInfo {
         bool isAdVisible = false;

client/core/models/api/apiV2ServerConfig.cpp

@@ -121,7 +121,11 @@ QJsonObject ApiV2ServerConfig::toJson() const
     if (!dns2.isEmpty()) {
         obj[configKey::dns2] = dns2;
     }
-    
+
+    if (!sendPayload.isEmpty()) {
+        obj[configKey::sendPayload] = sendPayload;
+    }
+
     if (crc > 0) {
         obj[configKey::crc] = crc;
     }
@@ -165,6 +169,7 @@ ApiV2ServerConfig ApiV2ServerConfig::fromJson(const QJsonObject& json)
     
     config.dns1 = json.value(configKey::dns1).toString();
     config.dns2 = json.value(configKey::dns2).toString();
+    config.sendPayload = json.value(configKey::sendPayload).toArray();
     
     config.crc = json.value(configKey::crc).toInt(0);
     

client/core/models/api/apiV2ServerConfig.h

@@ -1,6 +1,7 @@
 #ifndef APIV2SERVERCONFIG_H
 #define APIV2SERVERCONFIG_H
 
+#include <QJsonArray>
 #include <QJsonObject>
 #include <QMap>
 #include <QPair>
@@ -28,6 +29,7 @@ struct ApiV2ServerConfig {
     DockerContainer defaultContainer;
     QString dns1;
     QString dns2;
+    QJsonArray sendPayload;
     
     QString name;
     bool nameOverriddenByUser = false;

client/core/models/protocols/awgProtocolConfig.cpp

@@ -196,11 +196,21 @@ QJsonObject AwgClientConfig::toJson() const
         obj[configKey::transportPacketMagicHeader] = transportPacketMagicHeader;
     }
     
-    obj[configKey::specialJunk1] = specialJunk1;
-    obj[configKey::specialJunk2] = specialJunk2;
-    obj[configKey::specialJunk3] = specialJunk3;
-    obj[configKey::specialJunk4] = specialJunk4;
-    obj[configKey::specialJunk5] = specialJunk5;
+    if (!specialJunk1.isEmpty()) {
+        obj[configKey::specialJunk1] = specialJunk1;
+    }
+    if (!specialJunk2.isEmpty()) {
+        obj[configKey::specialJunk2] = specialJunk2;
+    }
+    if (!specialJunk3.isEmpty()) {
+        obj[configKey::specialJunk3] = specialJunk3;
+    }
+    if (!specialJunk4.isEmpty()) {
+        obj[configKey::specialJunk4] = specialJunk4;
+    }
+    if (!specialJunk5.isEmpty()) {
+        obj[configKey::specialJunk5] = specialJunk5;
+    }
     
     if (isObfuscationEnabled) {
         obj[configKey::isObfuscationEnabled] = isObfuscationEnabled;

client/core/models/protocols/xrayProtocolConfig.cpp

@@ -32,7 +32,7 @@ XrayXPaddingConfig XrayXPaddingConfig::fromJson(const QJsonObject &json)
     c.bytesMin  = json.value(configKey::xPaddingBytesMin).toString();
     c.bytesMax  = json.value(configKey::xPaddingBytesMax).toString();
     c.obfsMode  = json.value(configKey::xPaddingObfsMode).toBool(true);
-    c.key       = json.value(configKey::xPaddingKey).toString(protocols::xray::defaultSite);
+    c.key       = json.value(configKey::xPaddingKey).toString();
     c.header    = json.value(configKey::xPaddingHeader).toString();
     c.placement = json.value(configKey::xPaddingPlacement).toString(protocols::xray::defaultXPaddingPlacement);
     c.method    = json.value(configKey::xPaddingMethod).toString(protocols::xray::defaultXPaddingMethod);
@@ -365,6 +365,8 @@ XrayServerConfig XrayServerConfig::fromJson(const QJsonObject &json)
 bool XrayServerConfig::hasEqualServerSettings(const XrayServerConfig &other) const
 {
     return port == other.port
+           && transportProto == other.transportProto
+           && subnetAddress == other.subnetAddress
            && site == other.site
            && security == other.security
            && flow == other.flow
@@ -466,6 +468,17 @@ XrayProtocolConfig XrayProtocolConfig::fromJson(const QJsonObject &json)
                         }
                     }
                 }
+                const QJsonArray outbounds = parsed.value(protocols::xray::outbounds).toArray();
+                if (!outbounds.isEmpty()) {
+                    const QJsonObject settings = outbounds[0].toObject().value(protocols::xray::settings).toObject();
+                    const QJsonArray vnext = settings.value(protocols::xray::vnext).toArray();
+                    if (!vnext.isEmpty()) {
+                        const QJsonArray users = vnext[0].toObject().value(protocols::xray::users).toArray();
+                        if (!users.isEmpty()) {
+                            clientCfg.id = users[0].toObject().value(protocols::xray::id).toString();
+                        }
+                    }
+                }
                 c.clientConfig = clientCfg;
             } else {
                 c.clientConfig = XrayClientConfig::fromJson(parsed);

client/core/repositories/secureAppSettingsRepository.cpp

@@ -280,6 +280,24 @@ void SecureAppSettingsRepository::toggleDevGatewayEnv(bool enabled)
     setValue("Conf/devGatewayEnv", enabled);
 }
 
+QByteArray SecureAppSettingsRepository::readGatewayProxyUrls(const QString &cacheKey) const
+{
+    if (cacheKey.isEmpty()) {
+        return {};
+    }
+
+    return value(QStringLiteral("Conf/proxyUrls/") + cacheKey).toByteArray();
+}
+
+void SecureAppSettingsRepository::writeGatewayProxyUrls(const QString &cacheKey, const QByteArray &proxyUrlsEncrypted)
+{
+    if (cacheKey.isEmpty()) {
+        return;
+    }
+
+    setValue(QStringLiteral("Conf/proxyUrls/") + cacheKey, proxyUrlsEncrypted);
+}
+
 bool SecureAppSettingsRepository::isKillSwitchEnabled() const
 {
     return value("Conf/killSwitchEnabled", true).toBool();

client/core/repositories/secureAppSettingsRepository.h

@@ -59,7 +59,9 @@ public:
     void setDevGatewayEndpoint();
     bool isDevGatewayEnv(bool isTestPurchase = false) const;
     void toggleDevGatewayEnv(bool enabled);
-    
+    QByteArray readGatewayProxyUrls(const QString &cacheKey) const;
+    void writeGatewayProxyUrls(const QString &cacheKey, const QByteArray &proxyUrlsEncrypted);
+
     bool isKillSwitchEnabled() const;
     void setKillSwitchEnabled(bool enabled);
     bool isStrictKillSwitchEnabled() const;

client/core/repositories/secureServersRepository.cpp

@@ -208,8 +208,8 @@ QString SecureServersRepository::nextAvailableServerName() const
     int i = 0;
     QString candidate;
     do {
-        i++;
-        candidate = QStringLiteral("Server %1").arg(i);
+        ++i;
+        candidate = tr("Server") + QLatin1Char(' ') + QString::number(i);
     } while (usedNames.contains(candidate));
 
     return candidate;

client/core/utils/constants/apiKeys.h

@@ -18,8 +18,8 @@ namespace apiDefs
         constexpr QLatin1String stackType("stack_type");
         constexpr QLatin1String cliVersion("cli_version");
         constexpr QLatin1String cliName("cli_name");
-        constexpr QLatin1String supportedProtocols("supported_protocols");
         constexpr QLatin1String availableCountries("available_countries");
+        constexpr QLatin1String availableProtocols("available_protocols");
         constexpr QLatin1String installationUuid("installation_uuid");
         constexpr QLatin1String uuid("installation_uuid");
         constexpr QLatin1String osVersion("os_version");

client/core/utils/constants/configKeys.h

@@ -25,6 +25,13 @@ namespace amnezia
         constexpr QLatin1String config("config");
         constexpr QLatin1String configVersion("config_version");
 
+        constexpr QLatin1String sendPayload("send_payload");
+        constexpr QLatin1String sendPayloadEndpoint("endpoint");
+        constexpr QLatin1String sendPayloadTimeoutMs("timeout_ms");
+        constexpr QLatin1String sendPayloadProtocol("protocol");
+        constexpr QLatin1String sendPayloadData("payload");
+        constexpr QLatin1String sendPayloadExpectedResponse("expected_response");
+
         constexpr QLatin1String containers("containers");
         constexpr QLatin1String container("container");
         constexpr QLatin1String defaultContainer("defaultContainer");

client/core/utils/constants/protocolConstants.h

@@ -271,6 +271,7 @@ namespace amnezia
             constexpr char workersModeAuto[]       = "auto";
             constexpr char workersModeManual[]     = "manual";
             constexpr int  maxWorkers              = 32;
+            constexpr int  botTagHexLength         = 32;
         }
 
     } // namespace protocols

client/core/utils/payloadSender.cpp

@@ -0,0 +1,193 @@
+#include "payloadSender.h"
+
+#include <QDebug>
+#include <QEventLoop>
+#include <QHostAddress>
+#include <QJsonObject>
+#include <QRandomGenerator>
+#include <QRegularExpression>
+#include <QTcpSocket>
+#include <QTimer>
+#include <QUdpSocket>
+
+#include "core/utils/constants/configKeys.h"
+#include "core/utils/networkUtilities.h"
+
+using namespace amnezia;
+
+namespace
+{
+    constexpr char protoUdp[] = "udp";
+    constexpr char protoTcp[] = "tcp";
+
+    QByteArray randomBytes(int count)
+    {
+        if (count <= 0) {
+            return {};
+        }
+        QByteArray bytes(count, Qt::Uninitialized);
+        for (int i = 0; i < count; ++i) {
+            bytes[i] = static_cast<char>(QRandomGenerator::global()->bounded(256));
+        }
+        return bytes;
+    }
+
+    bool parseEndpoint(const QString &endpoint, QString &host, quint16 &port)
+    {
+        const int separatorIndex = endpoint.lastIndexOf(QLatin1Char(':'));
+        if (separatorIndex <= 0 || separatorIndex == endpoint.size() - 1) {
+            return false;
+        }
+        host = endpoint.left(separatorIndex);
+        bool ok = false;
+        const uint parsedPort = endpoint.mid(separatorIndex + 1).toUInt(&ok);
+        if (!ok || parsedPort == 0 || parsedPort > 65535) {
+            return false;
+        }
+        port = static_cast<quint16>(parsedPort);
+        return true;
+    }
+
+    enum class ExchangeResult { Sent, Matched, Mismatch, Timeout };
+
+    ExchangeResult waitForResponse(QAbstractSocket &socket, const QByteArray &expectedResponse, int timeoutMs)
+    {
+        if (expectedResponse.isEmpty()) {
+            return ExchangeResult::Sent;
+        }
+
+        QByteArray response;
+        QEventLoop loop;
+        QTimer timer;
+        timer.setSingleShot(true);
+        QObject::connect(&timer, &QTimer::timeout, &loop, &QEventLoop::quit);
+        QObject::connect(&socket, &QIODevice::readyRead, &loop, [&]() {
+            response.append(socket.readAll());
+            if (response.size() >= expectedResponse.size()) {
+                loop.quit();
+            }
+        });
+
+        timer.start(timeoutMs);
+        loop.exec();
+
+        if (response.isEmpty()) {
+            return ExchangeResult::Timeout;
+        }
+        return response == expectedResponse ? ExchangeResult::Matched : ExchangeResult::Mismatch;
+    }
+}
+
+QByteArray PayloadSender::buildPayload(const QString &tagString)
+{
+    QByteArray result;
+    if (tagString.isEmpty()) {
+        return result;
+    }
+
+    static const QRegularExpression tagRegExp(QStringLiteral("<([^>]*)>"));
+    QRegularExpressionMatchIterator it = tagRegExp.globalMatch(tagString);
+    while (it.hasNext()) {
+        const QRegularExpressionMatch match = it.next();
+        const QStringList parts = match.captured(1).simplified().split(QLatin1Char(' '), Qt::SkipEmptyParts);
+        if (parts.isEmpty()) {
+            continue;
+        }
+
+        const QString tag = parts.at(0).toLower();
+        if (tag == QLatin1String("b")) {
+            if (parts.size() < 2) {
+                continue;
+            }
+            QString hex = parts.at(1);
+            if (hex.startsWith(QLatin1String("0x"), Qt::CaseInsensitive)) {
+                hex = hex.mid(2);
+            }
+            result.append(QByteArray::fromHex(hex.toLatin1()));
+        } else if (tag == QLatin1String("r")) {
+            if (parts.size() < 2) {
+                continue;
+            }
+            bool ok = false;
+            const int count = parts.at(1).toInt(&ok);
+            if (ok) {
+                result.append(randomBytes(count));
+            }
+        } else {
+            qWarning() << "PayloadSender: unknown payload tag" << tag;
+        }
+    }
+
+    return result;
+}
+
+void PayloadSender::sendAll(const QJsonArray &sendPayload)
+{
+    for (int i = 0; i < sendPayload.size(); ++i) {
+        const QJsonValue value = sendPayload.at(i);
+        if (!value.isObject()) {
+            continue;
+        }
+        sendEntry(value.toObject(), i);
+    }
+}
+
+void PayloadSender::sendEntry(const QJsonObject &entry, int index)
+{
+    const QString endpoint = entry.value(configKey::sendPayloadEndpoint).toString();
+    QString host;
+    quint16 port = 0;
+    if (!parseEndpoint(endpoint, host, port)) {
+        qWarning() << "PayloadSender: skipping entry" << index << "- invalid endpoint" << endpoint;
+        return;
+    }
+
+    const QString protocol = entry.value(configKey::sendPayloadProtocol).toString().toLower();
+    const int timeoutMs = entry.value(configKey::sendPayloadTimeoutMs).toInt();
+    const QByteArray payload = buildPayload(entry.value(configKey::sendPayloadData).toString());
+    const QByteArray expectedResponse = buildPayload(entry.value(configKey::sendPayloadExpectedResponse).toString());
+
+    const QString resolvedHost = NetworkUtilities::getIPAddress(host);
+    const QHostAddress hostAddress(resolvedHost.isEmpty() ? host : resolvedHost);
+
+    QUdpSocket udpSocket;
+    QTcpSocket tcpSocket;
+    QAbstractSocket *socket = nullptr;
+    if (protocol == protoUdp) {
+        socket = &udpSocket;
+        if (udpSocket.writeDatagram(payload, hostAddress, port) < 0) {
+            qWarning() << "PayloadSender: entry" << index << "- udp write failed to" << endpoint << udpSocket.errorString();
+            return;
+        }
+    } else if (protocol == protoTcp) {
+        socket = &tcpSocket;
+        tcpSocket.connectToHost(hostAddress, port);
+        if (!tcpSocket.waitForConnected(timeoutMs)) {
+            qWarning() << "PayloadSender: entry" << index << "- tcp connect failed to" << endpoint << tcpSocket.errorString();
+            return;
+        }
+        if (tcpSocket.write(payload) != payload.size()) {
+            qWarning() << "PayloadSender: entry" << index << "- tcp write failed to" << endpoint << tcpSocket.errorString();
+            return;
+        }
+        tcpSocket.flush();
+    } else {
+        qWarning() << "PayloadSender: skipping entry" << index << "- unsupported protocol" << protocol;
+        return;
+    }
+
+    switch (waitForResponse(*socket, expectedResponse, timeoutMs)) {
+    case ExchangeResult::Sent:
+        qInfo() << "PayloadSender: entry" << index << "-" << protocol << "payload sent to" << endpoint;
+        break;
+    case ExchangeResult::Matched:
+        qInfo() << "PayloadSender: entry" << index << "-" << protocol << "expected response received from" << endpoint;
+        break;
+    case ExchangeResult::Mismatch:
+        qWarning() << "PayloadSender: entry" << index << "-" << protocol << "response mismatch from" << endpoint;
+        break;
+    case ExchangeResult::Timeout:
+        qWarning() << "PayloadSender: entry" << index << "-" << protocol << "response timeout from" << endpoint;
+        break;
+    }
+}

client/core/utils/payloadSender.h

@@ -0,0 +1,18 @@
+#ifndef PAYLOADSENDER_H
+#define PAYLOADSENDER_H
+
+#include <QByteArray>
+#include <QJsonArray>
+#include <QString>
+
+class PayloadSender
+{
+public:
+    static void sendAll(const QJsonArray &sendPayload);
+    static QByteArray buildPayload(const QString &tagString);
+
+private:
+    static void sendEntry(const QJsonObject &entry, int index);
+};
+
+#endif // PAYLOADSENDER_H

client/core/utils/selfhosted/scriptsRegistry.cpp

@@ -50,6 +50,7 @@ QString amnezia::scriptName(SharedScriptType type)
     switch (type) {
     case SharedScriptType::prepare_host: return QLatin1String("prepare_host.sh");
     case SharedScriptType::install_docker: return QLatin1String("install_docker.sh");
+    case SharedScriptType::install_conntrack: return QLatin1String("install_conntrack.sh");
     case SharedScriptType::build_container: return QLatin1String("build_container.sh");
     case SharedScriptType::remove_container: return QLatin1String("remove_container.sh");
     case SharedScriptType::remove_all_containers: return QLatin1String("remove_all_containers.sh");
@@ -366,6 +367,14 @@ amnezia::ScriptVars amnezia::genTelemtVars(const ContainerConfig &containerConfi
         vars.append({ { "$TELEMT_USE_MIDDLE_PROXY", c.useMiddleProxy ? QLatin1String("true") : QLatin1String("false") } });
         vars.append({ { "$TELEMT_MASK", c.maskEnabled ? QLatin1String("true") : QLatin1String("false") } });
         vars.append({ { "$TELEMT_TLS_EMULATION", c.tlsEmulation ? QLatin1String("true") : QLatin1String("false") } });
+
+        QStringList additionalList;
+        for (const QString &s : c.additionalSecrets) {
+            if (!s.isEmpty()) {
+                additionalList << s;
+            }
+        }
+        vars.append({ { "$TELEMT_ADDITIONAL_SECRETS", additionalList.join(QLatin1Char(',')) } });
     }
 
     return vars;

client/core/utils/selfhosted/scriptsRegistry.h

@@ -21,6 +21,7 @@ enum SharedScriptType {
     // General scripts
     prepare_host,
     install_docker,
+    install_conntrack,
     build_container,
     remove_container,
     remove_all_containers,

client/daemon/daemon.cpp

@@ -390,55 +390,55 @@ bool Daemon::parseConfig(const QJsonObject& obj, InterfaceConfig& config) {
 
   config.m_killSwitchEnabled = QVariant(obj.value("killSwitchOption").toString()).toBool();
 
-  if (!obj.value("Jc").isNull()) {
-    config.m_junkPacketCount = obj.value("Jc").toString();
+  if (const auto jc = obj.value("Jc"); !jc.isUndefined()) {
+    config.m_junkPacketCount = jc.toString();
   }
-  if (!obj.value("Jmin").isNull()) {
-    config.m_junkPacketMinSize = obj.value("Jmin").toString();
+  if (const auto jmin = obj.value("Jmin"); !jmin.isUndefined()) {
+    config.m_junkPacketMinSize = jmin.toString();
   }
-  if (!obj.value("Jmax").isNull()) {
-    config.m_junkPacketMaxSize = obj.value("Jmax").toString();
+  if (const auto jmax = obj.value("Jmax"); !jmax.isUndefined()) {
+    config.m_junkPacketMaxSize = jmax.toString();
   }
-  if (!obj.value("S1").isNull()) {
-    config.m_initPacketJunkSize = obj.value("S1").toString();
+  if (const auto s1 = obj.value("S1"); !s1.isUndefined()) {
+    config.m_initPacketJunkSize = s1.toString();
   }
-  if (!obj.value("S2").isNull()) {
-    config.m_responsePacketJunkSize = obj.value("S2").toString();
+  if (const auto s2 = obj.value("S2"); !s2.isUndefined()) {
+    config.m_responsePacketJunkSize = s2.toString();
   }
-  if (!obj.value("S3").isNull()) {
-    config.m_cookieReplyPacketJunkSize = obj.value("S3").toString();
+  if (const auto s3 = obj.value("S3"); !s3.isUndefined()) {
+    config.m_cookieReplyPacketJunkSize = s3.toString();
   }
-  if (!obj.value("S4").isNull()) {
-    config.m_transportPacketJunkSize = obj.value("S4").toString();
+  if (const auto s4 = obj.value("S4"); !s4.isUndefined()) {
+    config.m_transportPacketJunkSize = s4.toString();
   }
 
-  if (!obj.value("H1").isNull()) {
-    config.m_initPacketMagicHeader = obj.value("H1").toString();
+  if (const auto h1 = obj.value("H1"); !h1.isUndefined()) {
+    config.m_initPacketMagicHeader = h1.toString();
   }
-  if (!obj.value("H2").isNull()) {
-    config.m_responsePacketMagicHeader = obj.value("H2").toString();
+  if (const auto h2 = obj.value("H2"); !h2.isUndefined()) {
+    config.m_responsePacketMagicHeader = h2.toString();
   }
-  if (!obj.value("H3").isNull()) {
-    config.m_underloadPacketMagicHeader = obj.value("H3").toString();
+  if (const auto h3 = obj.value("H3"); !h3.isUndefined()) {
+    config.m_underloadPacketMagicHeader = h3.toString();
   }
-  if (!obj.value("H4").isNull()) {
-    config.m_transportPacketMagicHeader = obj.value("H4").toString();
+  if (const auto h4 = obj.value("H4"); !h4.isUndefined()) {
+    config.m_transportPacketMagicHeader = h4.toString();
   }
 
-  if (!obj.value("I1").isNull()) {
-    config.m_specialJunk["I1"] = obj.value("I1").toString();
+  if (const auto i1 = obj.value("I1"); !i1.isUndefined()) {
+    config.m_specialJunk["I1"] = i1.toString();
   }
-  if (!obj.value("I2").isNull()) {
-    config.m_specialJunk["I2"] = obj.value("I2").toString();
+  if (const auto i2 = obj.value("I2"); !i2.isUndefined()) {
+    config.m_specialJunk["I2"] = i2.toString();
   }
-  if (!obj.value("I3").isNull()) {
-    config.m_specialJunk["I3"] = obj.value("I3").toString();
+  if (const auto i3 = obj.value("I3"); !i3.isUndefined()) {
+    config.m_specialJunk["I3"] = i3.toString();
   }
-  if (!obj.value("I4").isNull()) {
-    config.m_specialJunk["I4"] = obj.value("I4").toString();
+  if (const auto i4 = obj.value("I4"); !i4.isUndefined()) {
+    config.m_specialJunk["I4"] = i4.toString();
   }
-  if (!obj.value("I5").isNull()) {
-    config.m_specialJunk["I5"] = obj.value("I5").toString();
+  if (const auto i5 = obj.value("I5"); !i5.isUndefined()) {
+    config.m_specialJunk["I5"] = i5.toString();
   }
 
   return true;

client/images/controls/arrow-left-right.svg

@@ -0,0 +1,6 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M17 11L21 7L17 3" stroke="#D7D8DB" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M21 7H9" stroke="#D7D8DB" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M7 21L3 17L7 13" stroke="#D7D8DB" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M15 17H3" stroke="#D7D8DB" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/images/images.qrc

@@ -10,6 +10,7 @@
         <file>controls/app.svg</file>
         <file>controls/archive-restore.svg</file>
         <file>controls/arrow-left.svg</file>
+        <file>controls/arrow-left-right.svg</file>
         <file>controls/arrow-right.svg</file>
         <file>controls/bug.svg</file>
         <file>controls/check.svg</file>

client/ios/app/Info.plist.in

@@ -82,10 +82,32 @@
 		<key>NSAllowsLocalNetworking</key>
 		<true/>
 	</dict>
+	<key>CFBundleIconName</key>
+	<string>AppIcon</string>
 	<key>CFBundleIcons</key>
-        <dict/>
-        <key>CFBundleIcons~ipad</key>
-        <dict/>
+	<dict>
+		<key>CFBundlePrimaryIcon</key>
+		<dict>
+			<key>CFBundleIconFiles</key>
+			<array>
+				<string>AppIcon</string>
+			</array>
+			<key>CFBundleIconName</key>
+			<string>AppIcon</string>
+		</dict>
+	</dict>
+	<key>CFBundleIcons~ipad</key>
+	<dict>
+		<key>CFBundlePrimaryIcon</key>
+		<dict>
+			<key>CFBundleIconFiles</key>
+			<array>
+				<string>AppIcon</string>
+			</array>
+			<key>CFBundleIconName</key>
+			<string>AppIcon</string>
+		</dict>
+	</dict>
 	<key>UTImportedTypeDeclarations</key>
 	<array>
 		<dict>

client/macos/networkextension/CMakeLists.txt

@@ -25,6 +25,8 @@ set_target_properties(AmneziaVPNNetworkExtension PROPERTIES
 
     XCODE_ATTRIBUTE_INFOPLIST_FILE ${CMAKE_CURRENT_SOURCE_DIR}/Info.plist.in
     XCODE_ATTRIBUTE_LD_RUNPATH_SEARCH_PATHS "@executable_path/../../../../Frameworks @loader_path/../../../../Frameworks"
+
+    XCODE_LINK_BUILD_PHASE_MODE KNOWN_LOCATION
 )
 
 if(DEPLOY)
@@ -118,10 +120,20 @@ target_include_directories(AmneziaVPNNetworkExtension PRIVATE ${CLIENT_ROOT_DIR}
 target_include_directories(AmneziaVPNNetworkExtension PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
 
 find_package(openvpnadapter REQUIRED)
+# FIXME(ygurov): https://github.com/conan-io/conan/issues/20034
+set_property(TARGET amnezia::openvpnadapter APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
+set_property(TARGET amnezia::openvpnadapter APPEND PROPERTY IMPORTED_CONFIGURATIONS MINSIZEREL)
+set_property(TARGET amnezia::openvpnadapter APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
+set_property(TARGET amnezia::openvpnadapter APPEND PROPERTY IMPORTED_CONFIGURATIONS RELWITHDEBINFO)
 target_link_libraries(AmneziaVPNNetworkExtension PRIVATE amnezia::openvpnadapter)
 
 find_package(awg-apple REQUIRED)
 target_link_libraries(AmneziaVPNNetworkExtension PRIVATE amnezia::awg-apple)
 
 find_package(hev-socks5-tunnel REQUIRED)
+# FIXME(ygurov): https://github.com/conan-io/conan/issues/20034
+set_property(TARGET heiher::hev-socks5-tunnel APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
+set_property(TARGET heiher::hev-socks5-tunnel APPEND PROPERTY IMPORTED_CONFIGURATIONS MINSIZEREL)
+set_property(TARGET heiher::hev-socks5-tunnel APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
+set_property(TARGET heiher::hev-socks5-tunnel APPEND PROPERTY IMPORTED_CONFIGURATIONS RELWITHDEBINFO)
 target_link_libraries(AmneziaVPNNetworkExtension PRIVATE heiher::hev-socks5-tunnel)

client/platforms/windows/daemon/windowsdaemon.cpp

@@ -62,12 +62,29 @@ void WindowsDaemon::prepareActivation(const InterfaceConfig& config, int inetAda
 }
 
 void WindowsDaemon::activateSplitTunnel(const InterfaceConfig& config, int vpnAdapterIndex) {
-    if (m_splitTunnelManager == nullptr)
+    if (m_splitTunnelManager == nullptr) {
+        if (config.m_vpnDisabledApps.length() > 0) {
+            logger.error() << "Split tunnel manager is not initialized";
+            emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_INIT_FAILURE);
+        }
         return;
+    }
 
   if (config.m_vpnDisabledApps.length() > 0) {
-      m_splitTunnelManager->start(m_inetAdapterIndex, vpnAdapterIndex);
-      m_splitTunnelManager->excludeApps(config.m_vpnDisabledApps);
+      if (!m_splitTunnelManager->start(m_inetAdapterIndex, vpnAdapterIndex)) {
+          logger.error() << "Failed to start split tunnel";
+          emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_START_FAILURE);
+          return;
+      }
+      if (!m_splitTunnelManager->excludeApps(config.m_vpnDisabledApps)) {
+          logger.error() << "Failed to apply split tunnel app exclusions";
+          emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_EXCLUDE_FAILURE);
+          return;
+      }
+      if (!m_splitTunnelManager->isRunning()) {
+          logger.error() << "Split tunnel did not reach running state";
+          emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_START_FAILURE);
+      }
   } else {
       m_splitTunnelManager->stop();
   }
@@ -79,7 +96,9 @@ bool WindowsDaemon::run(Op op, const InterfaceConfig& config) {
       // The Client has sent us a list of disabled apps, but we failed
       // to init the the split tunnel driver.
       // So let the client know this was not possible
+      logger.error() << "Split tunnel manager is not initialized";
       emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_INIT_FAILURE);
+      return false;
     }
     return true;
   }
@@ -90,14 +109,20 @@ bool WindowsDaemon::run(Op op, const InterfaceConfig& config) {
   }
   if (config.m_vpnDisabledApps.length() > 0) {
     if (!m_splitTunnelManager->start(m_inetAdapterIndex)) {
+      logger.error() << "Split tunnel start failed";
       emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_START_FAILURE);
+      return false;
     };
     if (!m_splitTunnelManager->excludeApps(config.m_vpnDisabledApps)) {
+      logger.error() << "Split tunnel app exclusion failed";
       emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_EXCLUDE_FAILURE);
+      return false;
     };
     // Now the driver should be running (State == 4)
     if (!m_splitTunnelManager->isRunning()) {
+      logger.error() << "Split tunnel did not reach running state";
       emit backendFailure(DaemonError::ERROR_SPLIT_TUNNEL_START_FAILURE);
+      return false;
     }
     return true;
   }

client/platforms/windows/daemon/windowsfirewall.cpp

@@ -36,6 +36,8 @@
 // ID for the Firewall Sublayer
 DEFINE_GUID(ST_FW_WINFW_BASELINE_SUBLAYER_KEY, 0xc78056ff, 0x2bc1, 0x4211, 0xaa,
             0xdd, 0x7f, 0x35, 0x8d, 0xef, 0x20, 0x2d);
+DEFINE_GUID(ST_FW_WINFW_DNS_SUBLAYER_KEY, 0x60090787, 0xcca1, 0x4937, 0xaa,
+            0xce, 0x51, 0x25, 0x6e, 0xf4, 0x81, 0xf3);
 // ID for the Mullvad Split-Tunnel Sublayer Provider
 DEFINE_GUID(ST_FW_PROVIDER_KEY, 0xe2c114ee, 0xf32a, 0x4264, 0xa6, 0xcb, 0x3f,
             0xa7, 0x99, 0x63, 0x56, 0xd9);
@@ -49,6 +51,53 @@ constexpr uint8_t LOW_WEIGHT = 0;
 constexpr uint8_t MED_WEIGHT = 7;
 constexpr uint8_t HIGH_WEIGHT = 13;
 constexpr uint8_t MAX_WEIGHT = 15;
+
+bool ensureSublayer(HANDLE wfp, const GUID& key, const wchar_t* name,
+                    const wchar_t* description) {
+  FWPM_SUBLAYER0* maybeLayer = nullptr;
+  DWORD result = FwpmSubLayerGetByKey0(wfp, &key, &maybeLayer);
+  if (result == ERROR_SUCCESS) {
+    logger.debug() << "The Sublayer Already Exists:"
+                   << QString::fromWCharArray(name);
+    FwpmFreeMemory0(reinterpret_cast<void**>(&maybeLayer));
+    return true;
+  }
+  if (result != FWP_E_SUBLAYER_NOT_FOUND) {
+    logger.error() << "FwpmSubLayerGetByKey0 failed. Return value:.\n"
+                   << result;
+    return false;
+  }
+
+  result = FwpmTransactionBegin(wfp, NULL);
+  if (result != ERROR_SUCCESS) {
+    logger.error() << "FwpmTransactionBegin0 failed. Return value:.\n"
+                   << result;
+    return false;
+  }
+
+  FWPM_SUBLAYER0 subLayer;
+  memset(&subLayer, 0, sizeof(subLayer));
+  subLayer.subLayerKey = key;
+  subLayer.displayData.name = const_cast<PWSTR>(name);
+  subLayer.displayData.description = const_cast<PWSTR>(description);
+  subLayer.weight = 0xFFFF;
+
+  result = FwpmSubLayerAdd0(wfp, &subLayer, NULL);
+  if (result != ERROR_SUCCESS) {
+    FwpmTransactionAbort0(wfp);
+    logger.error() << "FwpmSubLayerAdd0 failed. Return value:.\n" << result;
+    return false;
+  }
+
+  result = FwpmTransactionCommit0(wfp);
+  if (result != ERROR_SUCCESS) {
+    logger.error() << "FwpmTransactionCommit0 failed. Return value:.\n"
+                   << result;
+    return false;
+  }
+  logger.debug() << "Initialised Sublayer:" << QString::fromWCharArray(name);
+  return true;
+}
 }  // namespace
 
 WindowsFirewall* WindowsFirewall::create(QObject* parent) {
@@ -116,47 +165,12 @@ bool WindowsFirewall::initSublayer() {
   }
   auto cleanup = qScopeGuard([&] { FwpmEngineClose0(wfp); });
 
-  // Check if the Layer Already Exists
-  FWPM_SUBLAYER0* maybeLayer;
-  result = FwpmSubLayerGetByKey0(wfp, &ST_FW_WINFW_BASELINE_SUBLAYER_KEY,
-                                 &maybeLayer);
-  if (result == ERROR_SUCCESS) {
-    logger.debug() << "The Sublayer Already Exists!";
-    FwpmFreeMemory0((void**)&maybeLayer);
-    return true;
-  }
-
-  // Step 1: Start Transaction
-  result = FwpmTransactionBegin(wfp, NULL);
-  if (result != ERROR_SUCCESS) {
-    logger.error() << "FwpmTransactionBegin0 failed. Return value:.\n"
-                   << result;
-    return false;
-  }
-
-  // Step 3: Add Sublayer
-  FWPM_SUBLAYER0 subLayer;
-  memset(&subLayer, 0, sizeof(subLayer));
-  subLayer.subLayerKey = ST_FW_WINFW_BASELINE_SUBLAYER_KEY;
-  subLayer.displayData.name = (PWSTR)L"Amnezia-SplitTunnel-Sublayer";
-  subLayer.displayData.description =
-      (PWSTR)L"Filters that enforce a good baseline";
-  subLayer.weight = 0xFFFF;
-
-  result = FwpmSubLayerAdd0(wfp, &subLayer, NULL);
-  if (result != ERROR_SUCCESS) {
-    logger.error() << "FwpmSubLayerAdd0 failed. Return value:.\n" << result;
-    return false;
-  }
-  // Step 4: Commit!
-  result = FwpmTransactionCommit0(wfp);
-  if (result != ERROR_SUCCESS) {
-    logger.error() << "FwpmTransactionCommit0 failed. Return value:.\n"
-                   << result;
-    return false;
-  }
-  logger.debug() << "Initialised Sublayer";
-  return true;
+  return ensureSublayer(wfp, ST_FW_WINFW_BASELINE_SUBLAYER_KEY,
+                        L"Amnezia-SplitTunnel-Sublayer",
+                        L"Filters that enforce a good baseline") &&
+         ensureSublayer(wfp, ST_FW_WINFW_DNS_SUBLAYER_KEY,
+                        L"Amnezia-SplitTunnel-DNS-Sublayer",
+                        L"DNS filters for split tunneling");
 }
 
 bool WindowsFirewall::enableInterface(int vpnAdapterIndex) {

client/platforms/windows/daemon/windowssplittunnel.cpp

@@ -24,6 +24,7 @@
 #include <QFileInfo>
 #include <QNetworkInterface>
 #include <QScopeGuard>
+#include <QUrl>
 
 #pragma region
 
@@ -148,6 +149,18 @@ ProcessInfo getProcessInfo(HANDLE process, const PROCESSENTRY32W& processMeta) {
   return pi;
 }
 
+QString normalizeExecutablePath(const QString& path) {
+  QString normalized = path.trimmed();
+  if (normalized.startsWith("file:", Qt::CaseInsensitive)) {
+    const QString localPath = QUrl(normalized).toLocalFile();
+    if (!localPath.isEmpty()) {
+      normalized = localPath;
+    }
+  }
+  normalized.replace('/', '\\');
+  return normalized;
+}
+
 }  // namespace
 
 std::unique_ptr<WindowsSplitTunnel> WindowsSplitTunnel::create(
@@ -287,6 +300,10 @@ bool WindowsSplitTunnel::excludeApps(const QStringList& appPaths) {
 
   logger.debug() << "Pushing new Ruleset for Split-Tunnel " << state;
   auto config = generateAppConfiguration(appPaths);
+  if (config.empty()) {
+    logger.error() << "No valid split-tunnel application rules generated";
+    return false;
+  }
 
   DWORD bytesReturned;
   auto ok = DeviceIoControl(m_driver, IOCTL_SET_CONFIGURATION, &config[0],
@@ -314,7 +331,7 @@ bool WindowsSplitTunnel::start(int inetAdapterIndex, int vpnAdapterIndex) {
     auto ok = DeviceIoControl(m_driver, IOCTL_INITIALIZE, nullptr, 0, nullptr,
                               0, &bytesReturned, nullptr);
     if (!ok) {
-      logger.error() << "Driver init failed";
+      logger.error() << "Driver init failed. Error:" << GetLastError();
       return false;
     }
   }
@@ -323,11 +340,16 @@ bool WindowsSplitTunnel::start(int inetAdapterIndex, int vpnAdapterIndex) {
   if (getState() == STATE_INITIALIZED) {
     logger.debug() << "State is Init, requires process config";
     auto config = generateProcessBlob();
+    if (config.empty()) {
+      logger.error() << "Process configuration blob is empty";
+      return false;
+    }
     auto ok = DeviceIoControl(m_driver, IOCTL_REGISTER_PROCESSES, &config[0],
                               (DWORD)config.size(), nullptr, 0, &bytesReturned,
                               nullptr);
     if (!ok) {
-      logger.error() << "Failed to set Process Config";
+      logger.error() << "Failed to set Process Config. Error:"
+                     << GetLastError();
       return false;
     }
     logger.debug() << "Set Process Config ok || new State:" << stateString();
@@ -340,11 +362,16 @@ bool WindowsSplitTunnel::start(int inetAdapterIndex, int vpnAdapterIndex) {
   logger.debug() << "Driver is  ready || new State:" << stateString();
 
   auto config = generateIPConfiguration(inetAdapterIndex, vpnAdapterIndex);
+  if (config.empty()) {
+    logger.error() << "Network configuration blob is empty. Internet adapter:"
+                   << inetAdapterIndex << "VPN adapter:" << vpnAdapterIndex;
+    return false;
+  }
   auto ok = DeviceIoControl(m_driver, IOCTL_REGISTER_IP_ADDRESSES, &config[0],
                             (DWORD)config.size(), nullptr, 0, &bytesReturned,
                             nullptr);
   if (!ok) {
-    logger.error() << "Failed to set Network Config";
+    logger.error() << "Failed to set Network Config. Error:" << GetLastError();
     return false;
   }
   logger.debug() << "New Network Config Applied || new State:" << stateString();
@@ -404,13 +431,22 @@ std::vector<uint8_t> WindowsSplitTunnel::generateAppConfiguration(
   size_t cummulated_string_size = 0;
   QStringList dosPaths;
   for (auto const& path : appPaths) {
-    auto dosPath = convertPath(path);
+    const QString normalizedPath = normalizeExecutablePath(path);
+    auto dosPath = convertPath(normalizedPath);
+    if (dosPath.isEmpty()) {
+      logger.error() << "Rejecting split-tunnel app path with empty device "
+                        "conversion:"
+                     << normalizedPath;
+      continue;
+    }
     dosPaths.append(dosPath);
     cummulated_string_size += dosPath.toStdWString().size() * sizeof(wchar_t);
-    logger.debug() << dosPath;
+  }
+  if (dosPaths.isEmpty()) {
+    return {};
   }
   size_t bufferSize = sizeof(CONFIGURATION_HEADER) +
-                      (sizeof(CONFIGURATION_ENTRY) * appPaths.size()) +
+                      (sizeof(CONFIGURATION_ENTRY) * dosPaths.size()) +
                       cummulated_string_size;
   std::vector<uint8_t> outBuffer(bufferSize);
 
@@ -418,7 +454,7 @@ std::vector<uint8_t> WindowsSplitTunnel::generateAppConfiguration(
   auto entry = (CONFIGURATION_ENTRY*)(header + 1);
 
   auto stringDest = &outBuffer[0] + sizeof(CONFIGURATION_HEADER) +
-                    (sizeof(CONFIGURATION_ENTRY) * appPaths.size());
+                    (sizeof(CONFIGURATION_ENTRY) * dosPaths.size());
 
   SIZE_T stringOffset = 0;
 
@@ -437,7 +473,7 @@ std::vector<uint8_t> WindowsSplitTunnel::generateAppConfiguration(
     stringOffset += stringLength;
   }
 
-  header->NumEntries = appPaths.length();
+  header->NumEntries = dosPaths.length();
   header->TotalLength = bufferSize;
 
   return outBuffer;
@@ -449,9 +485,7 @@ std::vector<std::byte> WindowsSplitTunnel::generateIPConfiguration(
 
   auto config = reinterpret_cast<IP_ADDRESSES_CONFIG*>(&out[0]);
 
-  auto ifaces = QNetworkInterface::allInterfaces();
-
-    if (vpnAdapterIndex == 0) {
+  if (vpnAdapterIndex == 0) {
     vpnAdapterIndex = WindowsCommons::VPNAdapterIndex();
   }
   // Always the VPN
@@ -520,7 +554,7 @@ std::vector<uint8_t> WindowsSplitTunnel::generateProcessBlob() {
     auto process_handle = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE,
                                       currentProcess.th32ProcessID);
 
-    if (process_handle == INVALID_HANDLE_VALUE) {
+    if (process_handle == nullptr) {
       continue;
     }
     ProcessInfo info = getProcessInfo(process_handle, currentProcess);
@@ -640,23 +674,48 @@ bool WindowsSplitTunnel::isInstalled() {
 }
 
 QString WindowsSplitTunnel::convertPath(const QString& path) {
-  auto parts = path.split("/");
+  const QString normalizedPath = normalizeExecutablePath(path);
+  if (normalizedPath.isEmpty()) {
+    logger.error() << "Empty executable path for DOS device conversion";
+    return "";
+  }
+  auto parts = normalizedPath.split("\\", Qt::SkipEmptyParts);
+  if (parts.isEmpty()) {
+    logger.error() << "Invalid executable path for DOS device conversion:"
+                   << normalizedPath;
+    return "";
+  }
   QString driveLetter = parts.takeFirst();
   if (!driveLetter.contains(":") || parts.size() == 0) {
     // device should contain : for e.g C:
+    logger.error() << "Invalid executable path for DOS device conversion:"
+                   << normalizedPath;
     return "";
   }
-  QByteArray buffer(2048, 0xFFu);
-  auto ok = QueryDosDeviceW(qUtf16Printable(driveLetter),
-                            (wchar_t*)buffer.data(), buffer.size() / 2);
-
-  if (ok == ERROR_INSUFFICIENT_BUFFER) {
+  QByteArray buffer(2048 * sizeof(wchar_t), 0);
+  DWORD ok = 0;
+  DWORD err = ERROR_SUCCESS;
+  for (int attempt = 0; attempt < 4; ++attempt) {
+    ok = QueryDosDeviceW(reinterpret_cast<LPCWSTR>(driveLetter.utf16()),
+                         reinterpret_cast<LPWSTR>(buffer.data()),
+                         buffer.size() / sizeof(wchar_t));
+    if (ok != 0) {
+      break;
+    }
+    err = GetLastError();
+    if (err != ERROR_INSUFFICIENT_BUFFER) {
+      WindowsUtils::windowsLog("Err fetching dos path");
+      logger.error() << "QueryDosDeviceW failed for" << driveLetter
+                     << "error:" << err;
+      return "";
+    }
     buffer.resize(buffer.size() * 2);
-    ok = QueryDosDeviceW(qUtf16Printable(driveLetter), (wchar_t*)buffer.data(),
-                         buffer.size() / 2);
+    buffer.fill(0);
   }
   if (ok == 0) {
     WindowsUtils::windowsLog("Err fetching dos path");
+    logger.error() << "QueryDosDeviceW failed after buffer growth for"
+                   << driveLetter << "error:" << err;
     return "";
   }
   QString deviceName;

client/secureQSettings.cpp

@@ -1,8 +1,7 @@
 #include "secureQSettings.h"
 
-#include "../client/3rd/QSimpleCrypto/src/include/QAead.h"
-#include "../client/3rd/QSimpleCrypto/src/include/QBlockCipher.h"
 #include "core/utils/utilities.h"
+#include "cryptoUtils.h"
 #include <QDataStream>
 #include <QDebug>
 #include <QEventLoop>
@@ -180,11 +179,8 @@ void SecureQSettings::clearSettings()
 
 QByteArray SecureQSettings::encryptText(const QByteArray &value) const
 {
-    QSimpleCrypto::QBlockCipher cipher;
-    QByteArray result;
-    try {
-        result = cipher.encryptAesBlockCipher(value, getEncKey(), getEncIv());
-    } catch (...) { // todo change error handling in QSimpleCrypto?
+    QByteArray result = CryptoUtils::encryptAes256Cbc(value, getEncKey(), getEncIv());
+    if (result.isEmpty() && !value.isEmpty()) {
         qCritical() << "error when encrypting the settings value";
     }
     return result;
@@ -192,11 +188,8 @@ QByteArray SecureQSettings::encryptText(const QByteArray &value) const
 
 QByteArray SecureQSettings::decryptText(const QByteArray &ba) const
 {
-    QSimpleCrypto::QBlockCipher cipher;
-    QByteArray result;
-    try {
-        result = cipher.decryptAesBlockCipher(ba, getEncKey(), getEncIv());
-    } catch (...) { // todo change error handling in QSimpleCrypto?
+    QByteArray result = CryptoUtils::decryptAes256Cbc(ba, getEncKey(), getEncIv());
+    if (result.isEmpty() && !ba.isEmpty()) {
         qCritical() << "error when decrypting the settings value";
     }
     return result;
@@ -225,8 +218,7 @@ QByteArray SecureQSettings::getEncKey() const
 
     if (m_key.isEmpty()) {
         // Create new key
-        QSimpleCrypto::QBlockCipher cipher;
-        QByteArray key = cipher.generatePrivateSalt(32);
+        QByteArray key = CryptoUtils::generateRandomBytes(32);
         if (key.isEmpty()) {
             qCritical() << "SecureQSettings::getEncKey Unable to generate new enc key";
         }
@@ -254,8 +246,7 @@ QByteArray SecureQSettings::getEncIv() const
 
     if (m_iv.isEmpty()) {
         // Create new IV
-        QSimpleCrypto::QBlockCipher cipher;
-        QByteArray iv = cipher.generatePrivateSalt(32);
+        QByteArray iv = CryptoUtils::generateRandomBytes(32);
         if (iv.isEmpty()) {
             qCritical() << "SecureQSettings::getEncIv Unable to generate new enc IV";
         }

client/server_scripts/install_conntrack.sh

@@ -0,0 +1,10 @@
+if command -v conntrack > /dev/null 2>&1; then echo "conntrack already installed"; exit 0; fi;\
+if which apt-get > /dev/null 2>&1; then pm=$(which apt-get); silent_inst="-yq install --install-recommends"; check_pkgs="-yq update"; conntrack_pkg="conntrack"; dist="debian";\
+elif which dnf > /dev/null 2>&1; then pm=$(which dnf); silent_inst="-yq install"; check_pkgs="-yq check-update"; conntrack_pkg="conntrack-tools"; dist="fedora";\
+elif which yum > /dev/null 2>&1; then pm=$(which yum); silent_inst="-y -q install"; check_pkgs="-y -q check-update"; conntrack_pkg="conntrack-tools"; dist="centos";\
+elif which zypper > /dev/null 2>&1; then pm=$(which zypper); silent_inst="-nq install"; check_pkgs="-nq refresh"; conntrack_pkg="conntrack-tools"; dist="opensuse";\
+elif which pacman > /dev/null 2>&1; then pm=$(which pacman); silent_inst="-S --noconfirm --noprogressbar --quiet"; check_pkgs="-Sup"; conntrack_pkg="conntrack-tools"; dist="archlinux";\
+else echo "Packet manager not found"; exit 0; fi;\
+if [ "$dist" = "debian" ]; then export DEBIAN_FRONTEND=noninteractive; fi;\
+sudo $pm $check_pkgs; sudo $pm $silent_inst $conntrack_pkg;\
+command -v conntrack > /dev/null 2>&1 && echo "conntrack installed" || echo "conntrack install failed"

client/server_scripts/serverScripts.qrc

@@ -18,6 +18,7 @@
         <file>dns/Dockerfile</file>
         <file>dns/run_container.sh</file>
         <file>install_docker.sh</file>
+        <file>install_conntrack.sh</file>
         <file>ipsec/configure_container.sh</file>
         <file>ipsec/Dockerfile</file>
         <file>ipsec/mobileconfig.plist</file>

client/server_scripts/telemt/configure_container.sh

@@ -61,6 +61,12 @@ rm -f /data/config.toml
     echo ""
     echo "[access.users]"
     echo "$TELEMT_USER_NAME = \"$SECRET\""
+    i=1
+    for EXTRA in $(echo "$TELEMT_ADDITIONAL_SECRETS" | tr ',' ' '); do
+        echo "$EXTRA" | grep -qE '^[0-9a-fA-F]{32}$' || continue
+        echo "extra_$i = \"$EXTRA\""
+        i=$((i + 1))
+    done
 } > /data/config.toml
 
 echo "$SECRET" > /data/secret

client/ui/controllers/api/subscriptionUiController.cpp

@@ -303,6 +303,8 @@ bool SubscriptionUiController::importFreeFromGateway()
         emit installServerFromApiFinished(tr("%1 installed successfully.").arg(m_apiServicesModel->getSelectedServiceName()));
         return true;
     } else if (errorCode == ErrorCode::ApiCaptchaRequiredError && captchaInfo.isRequired) {
+        m_captchaState = CaptchaState{};
+        m_captchaState.flow = CaptchaFlow::Import;
         m_captchaState.userCountryCode = userCountryCode;
         m_captchaState.serviceType = serviceType;
         m_captchaState.serviceProtocol = serviceProtocol;
@@ -327,6 +329,11 @@ void SubscriptionUiController::onCaptchaSolved(const QString &captchaId, const Q
         return;
     }
 
+    if (m_captchaState.flow == CaptchaFlow::Update) {
+        resolveUpdateCaptcha(captchaId, solution);
+        return;
+    }
+
     SubscriptionController::ProtocolData protocolData;
     protocolData.certPrivKey = m_captchaState.openvpnPrivKey;
     protocolData.wireGuardClientPrivKey = m_captchaState.wireguardClientPrivKey;
@@ -368,6 +375,33 @@ void SubscriptionUiController::onRefreshCaptchaRequested()
         return;
     }
 
+    if (m_captchaState.flow == CaptchaFlow::Update) {
+        SubscriptionController::CaptchaInfo captchaInfo;
+        SubscriptionController::ProtocolData usedProtocolData;
+        ErrorCode errorCode = m_subscriptionController->updateServiceFromGateway(
+                m_captchaState.serverId,
+                m_captchaState.newCountryCode,
+                m_captchaState.isConnectEvent,
+                &captchaInfo,
+                &usedProtocolData);
+
+        if (errorCode == ErrorCode::ApiCaptchaRequiredError && captchaInfo.isRequired) {
+            m_captchaState.updateProtocolData = usedProtocolData;
+            emit captchaRequired(captchaInfo.captchaId, captchaInfo.captchaImageBase64,
+                                 captchaInfo.hint.isEmpty() ? tr("Enter the digits from the image to continue") : captchaInfo.hint);
+        } else if (errorCode == ErrorCode::NoError) {
+            emitCaptchaUpdateSuccess();
+        } else {
+            m_captchaState.isPending = false;
+            if (errorCode == ErrorCode::ApiSubscriptionExpiredError) {
+                emit subscriptionExpiredOnServer();
+            } else {
+                emit errorOccurred(errorCode);
+            }
+        }
+        return;
+    }
+
     SubscriptionController::ProtocolData protocolData;
     protocolData.certPrivKey = m_captchaState.openvpnPrivKey;
     protocolData.wireGuardClientPrivKey = m_captchaState.wireguardClientPrivKey;
@@ -392,6 +426,39 @@ void SubscriptionUiController::onRefreshCaptchaRequested()
     }
 }
 
+void SubscriptionUiController::resolveUpdateCaptcha(const QString &captchaId, const QString &solution)
+{
+    SubscriptionController::CaptchaInfo retryCaptcha;
+    ErrorCode errorCode = m_subscriptionController->resolveUpdateServiceCaptcha(
+            m_captchaState.serverId,
+            m_captchaState.newCountryCode,
+            m_captchaState.isConnectEvent,
+            m_captchaState.updateProtocolData,
+            captchaId,
+            solution,
+            &retryCaptcha);
+
+    if (errorCode == ErrorCode::NoError) {
+        emitCaptchaUpdateSuccess();
+        return;
+    }
+
+    if ((errorCode == ErrorCode::ApiCaptchaInvalidError || errorCode == ErrorCode::ApiCaptchaRefreshError
+         || errorCode == ErrorCode::ApiCaptchaRequiredError)
+        && retryCaptcha.isRequired) {
+        emit captchaRequired(retryCaptcha.captchaId, retryCaptcha.captchaImageBase64,
+                             retryCaptcha.hint.isEmpty() ? tr("Enter the digits from the image to continue") : retryCaptcha.hint);
+        return;
+    }
+
+    m_captchaState.isPending = false;
+    if (errorCode == ErrorCode::ApiSubscriptionExpiredError) {
+        emit subscriptionExpiredOnServer();
+    } else {
+        emit errorOccurred(errorCode);
+    }
+}
+
 bool SubscriptionUiController::importTrialFromGateway(const QString &email)
 {
     emit trialEmailError(QString());
@@ -423,20 +490,29 @@ bool SubscriptionUiController::updateServiceFromGateway(const QString &serverId,
                 || oldApiV2->apiConfig.isSubscriptionExpired();
     }
 
-    ErrorCode errorCode = m_subscriptionController->updateServiceFromGateway(serverId, newCountryCode, isConnectEvent);
+    SubscriptionController::CaptchaInfo captchaInfo;
+    SubscriptionController::ProtocolData usedProtocolData;
+    ErrorCode errorCode = m_subscriptionController->updateServiceFromGateway(serverId, newCountryCode, isConnectEvent,
+                                                                             &captchaInfo, &usedProtocolData);
 
     if (errorCode == ErrorCode::NoError) {
-        if (wasSubscriptionExpired) {
-            emit subscriptionRefreshNeeded();
-        }
-        if (reloadServiceConfig) {
-            emit reloadServerFromApiFinished(tr("API config reloaded"));
-        } else if (newCountryName.isEmpty()) {
-            emit updateServerFromApiFinished();
-        } else {
-            emit changeApiCountryFinished(tr("Successfully changed the country of connection to %1").arg(newCountryName));
-        }
+        emitUpdateSuccess(wasSubscriptionExpired, reloadServiceConfig, newCountryName);
         return true;
+    } else if (errorCode == ErrorCode::ApiCaptchaRequiredError && captchaInfo.isRequired) {
+        m_captchaState = CaptchaState{};
+        m_captchaState.flow = CaptchaFlow::Update;
+        m_captchaState.serverId = serverId;
+        m_captchaState.newCountryCode = newCountryCode;
+        m_captchaState.newCountryName = newCountryName;
+        m_captchaState.isConnectEvent = isConnectEvent;
+        m_captchaState.reloadServiceConfig = reloadServiceConfig;
+        m_captchaState.wasSubscriptionExpired = wasSubscriptionExpired;
+        m_captchaState.updateProtocolData = usedProtocolData;
+        m_captchaState.isPending = true;
+
+        emit captchaRequired(captchaInfo.captchaId, captchaInfo.captchaImageBase64,
+                             captchaInfo.hint.isEmpty() ? tr("Enter the digits from the image to continue") : captchaInfo.hint);
+        return false;
     } else {
         if (errorCode == ErrorCode::ApiSubscriptionExpiredError) {
             emit subscriptionExpiredOnServer();
@@ -447,6 +523,37 @@ bool SubscriptionUiController::updateServiceFromGateway(const QString &serverId,
     }
 }
 
+void SubscriptionUiController::emitUpdateSuccess(bool wasSubscriptionExpired, bool reloadServiceConfig, const QString &newCountryName)
+{
+    if (wasSubscriptionExpired) {
+        emit subscriptionRefreshNeeded();
+    }
+    if (reloadServiceConfig) {
+        emit reloadServerFromApiFinished(tr("API config reloaded"));
+    } else if (newCountryName.isEmpty()) {
+        emit updateServerFromApiFinished();
+    } else {
+        emit changeApiCountryFinished(tr("Successfully changed the country of connection to %1").arg(newCountryName));
+    }
+}
+
+void SubscriptionUiController::emitCaptchaUpdateSuccess()
+{
+    const bool fromValidateConfig = m_captchaState.fromValidateConfig;
+    const bool wasSubscriptionExpired = m_captchaState.wasSubscriptionExpired;
+    const bool reloadServiceConfig = m_captchaState.reloadServiceConfig;
+    const QString newCountryName = m_captchaState.newCountryName;
+
+    m_captchaState.isPending = false;
+    emit captchaFlowDismissRequested();
+
+    if (fromValidateConfig) {
+        emit configValidated(true);
+        return;
+    }
+    emitUpdateSuccess(wasSubscriptionExpired, reloadServiceConfig, newCountryName);
+}
+
 
 bool SubscriptionUiController::deactivateDevice(const QString &serverId)
 {
@@ -482,7 +589,25 @@ void SubscriptionUiController::validateConfig()
 
     bool hasInstalledContainers = m_serversController->hasInstalledContainers(serverId);
 
-    ErrorCode errorCode = m_subscriptionController->validateAndUpdateConfig(serverId, hasInstalledContainers);
+    SubscriptionController::CaptchaInfo captchaInfo;
+    SubscriptionController::ProtocolData usedProtocolData;
+    ErrorCode errorCode = m_subscriptionController->validateAndUpdateConfig(serverId, hasInstalledContainers,
+                                                                            &captchaInfo, &usedProtocolData);
+
+    if (errorCode == ErrorCode::ApiCaptchaRequiredError && captchaInfo.isRequired) {
+        m_captchaState = CaptchaState{};
+        m_captchaState.flow = CaptchaFlow::Update;
+        m_captchaState.fromValidateConfig = true;
+        m_captchaState.serverId = serverId;
+        m_captchaState.isConnectEvent = true;
+        m_captchaState.updateProtocolData = usedProtocolData;
+        m_captchaState.isPending = true;
+
+        emit captchaRequired(captchaInfo.captchaId, captchaInfo.captchaImageBase64,
+                             captchaInfo.hint.isEmpty() ? tr("Enter the digits from the image to continue") : captchaInfo.hint);
+        emit configValidated(false);
+        return;
+    }
 
     if (errorCode != ErrorCode::NoError) {
         if (errorCode == ErrorCode::ApiSubscriptionExpiredError) {
@@ -508,6 +633,18 @@ bool SubscriptionUiController::isVlessProtocol(const QString &serverId)
 }
 
 
+QString SubscriptionUiController::currentProtocol(const QString &serverId)
+{
+    return m_subscriptionController->currentProtocol(serverId);
+}
+
+
+QStringList SubscriptionUiController::availableProtocols(const QString &serverId)
+{
+    return m_subscriptionController->availableProtocols(serverId);
+}
+
+
 void SubscriptionUiController::removeApiConfig(const QString &serverId)
 {
     m_subscriptionController->removeApiConfig(serverId);

client/ui/controllers/api/subscriptionUiController.h

@@ -57,6 +57,8 @@ public slots:
 
     void setCurrentProtocol(const QString &serverId, const QString &protocolName);
     bool isVlessProtocol(const QString &serverId);
+    QString currentProtocol(const QString &serverId);
+    QStringList availableProtocols(const QString &serverId);
 
     bool isCaptchaAwaitingUser() const;
     void onCaptchaSolved(const QString &captchaId, const QString &solution);
@@ -95,7 +97,15 @@ signals:
     void unsupportedConnectDrawerRequested();
 
 private:
+    enum class CaptchaFlow {
+        Import,
+        Update
+    };
+
     struct CaptchaState {
+        CaptchaFlow flow = CaptchaFlow::Import;
+
+        // Import flow
         QString userCountryCode;
         QString serviceType;
         QString serviceProtocol;
@@ -103,10 +113,25 @@ private:
         QString wireguardClientPrivKey;
         QString wireguardClientPubKey;
         QString xrayUuid;
+
+        // Update flow
+        QString serverId;
+        QString newCountryCode;
+        QString newCountryName;
+        bool isConnectEvent = false;
+        bool reloadServiceConfig = false;
+        bool wasSubscriptionExpired = false;
+        bool fromValidateConfig = false;
+        SubscriptionController::ProtocolData updateProtocolData;
+
         bool isPending = false;
     } m_captchaState;
 
 private:
+    void emitUpdateSuccess(bool wasSubscriptionExpired, bool reloadServiceConfig, const QString &newCountryName);
+    void emitCaptchaUpdateSuccess();
+    void resolveUpdateCaptcha(const QString &captchaId, const QString &solution);
+
     QList<QString> getQrCodes();
     int getQrCodesCount();
     QString getVpnKey();

client/ui/controllers/qml/pageController.cpp

@@ -128,6 +128,11 @@ void PageController::showOnStartup()
     }
 }
 
+bool PageController::shouldStartMinimized() const
+{
+    return m_settingsController->isStartMinimizedEnabled();
+}
+
 bool PageController::isTriggeredByConnectButton()
 {
     return m_isTriggeredByConnectButton;

client/ui/controllers/qml/pageController.h

@@ -123,6 +123,7 @@ public slots:
     void updateNavigationBarColor(const int color);
 
     void showOnStartup();
+    bool shouldStartMinimized() const;
 
     bool isTriggeredByConnectButton();
     void setTriggeredByConnectButton(bool trigger);

client/ui/controllers/selfhosted/exportUiController.cpp

@@ -9,6 +9,13 @@ ExportUiController::ExportUiController(ExportController* exportController, QObje
     : QObject(parent),
       m_exportController(exportController)
 {
+    connect(m_exportController, &ExportController::revokeFinished, this, [this](ErrorCode errorCode) {
+        if (errorCode == ErrorCode::NoError) {
+            emit revokeConfigFinished();
+        } else {
+            emit exportErrorOccurred(errorCode);
+        }
+    });
 }
 
 void ExportUiController::generateFullAccessConfig(const QString &serverId)
@@ -92,7 +99,6 @@ void ExportUiController::updateClientManagementModel(const QString &serverId, in
 void ExportUiController::revokeConfig(int row, const QString &serverId, int containerIndex)
 {
     m_exportController->revokeConfig(row, serverId, containerIndex);
-    emit revokeConfigFinished();
 }
 
 void ExportUiController::renameClient(int row, const QString &clientName, const QString &serverId, int containerIndex)

client/ui/controllers/selfhosted/installUiController.cpp

@@ -9,6 +9,7 @@
 #include <QStandardPaths>
 #include <QFutureWatcher>
 #include <QtConcurrent>
+#include <utility>
 
 #include "core/utils/api/apiUtils.h"
 #include "core/controllers/selfhosted/installController.h"
@@ -306,14 +307,17 @@ void InstallUiController::updateServerConfig(const QString &serverId, int contai
             || container == DockerContainer::Xray || container == DockerContainer::SSXray;
 
     if (asyncUpdate) {
-        emit serverIsBusy(true);
+        const bool emitBusy = container == DockerContainer::MtProxy || container == DockerContainer::Telemt;
+        if (emitBusy)
+            emit serverIsBusy(true);
         auto *watcher = new QFutureWatcher<ErrorCode>(this);
         const Proto protocolTypeCopy = protocolType;
         QObject::connect(watcher, &QFutureWatcher<ErrorCode>::finished, this,
-                         [this, watcher, serverId, container, closePage, protocolTypeCopy]() {
+                         [this, watcher, serverId, container, closePage, protocolTypeCopy, emitBusy]() {
                              const ErrorCode errorCode = watcher->result();
                              watcher->deleteLater();
-                             emit serverIsBusy(false);
+                             if (emitBusy)
+                                 emit serverIsBusy(false);
 
                              if (errorCode == ErrorCode::NoError) {
                                  const ContainerConfig updatedConfig =
@@ -359,17 +363,27 @@ void InstallUiController::setContainerEnabled(const QString &serverId, int conta
     }
 
     emit serverIsBusy(true);
-    const ErrorCode errorCode = m_installController->setDockerContainerEnabledState(serverId, container, enabled);
-    emit serverIsBusy(false);
 
-    if (errorCode == ErrorCode::NoError) {
-        const ContainerConfig currentConfig = m_serversController->getContainerConfig(serverId, container);
-        m_protocolModel->updateModel(currentConfig);
-        emit setContainerEnabledFinished(enabled);
-        return;
-    }
+    InstallController *installController = m_installController;
+    auto *watcher = new QFutureWatcher<ErrorCode>(this);
+    QObject::connect(watcher, &QFutureWatcher<ErrorCode>::finished, this,
+                     [this, watcher, serverId, container, enabled]() {
+                         const ErrorCode errorCode = watcher->result();
+                         watcher->deleteLater();
+                         emit serverIsBusy(false);
 
-    emit installationErrorOccurred(errorCode);
+                         if (errorCode == ErrorCode::NoError) {
+                             const ContainerConfig currentConfig = m_serversController->getContainerConfig(serverId, container);
+                             m_protocolModel->updateModel(currentConfig);
+                             emit setContainerEnabledFinished(enabled);
+                             return;
+                         }
+                         emit installationErrorOccurred(errorCode);
+                     });
+    QFuture<ErrorCode> future = QtConcurrent::run([installController, serverId, container, enabled]() -> ErrorCode {
+        return installController->setDockerContainerEnabledState(serverId, container, enabled);
+    });
+    watcher->setFuture(future);
 }
 
 void InstallUiController::refreshContainerStatus(const QString &serverId, int containerIndex)
@@ -379,13 +393,23 @@ void InstallUiController::refreshContainerStatus(const QString &serverId, int co
         return;
     }
 
-    int status = 3;
-    const ErrorCode errorCode = m_installController->queryDockerContainerStatus(serverId, container, status);
-    if (errorCode != ErrorCode::NoError) {
-        emit containerStatusRefreshed(3);
-        return;
-    }
-    emit containerStatusRefreshed(status);
+    using StatusResult = std::pair<int, int>; // {status, errorCode}
+    InstallController *installController = m_installController;
+    auto *watcher = new QFutureWatcher<StatusResult>(this);
+    QObject::connect(watcher, &QFutureWatcher<StatusResult>::finished, this, [this, watcher]() {
+        const StatusResult result = watcher->result();
+        watcher->deleteLater();
+        emit containerStatusRefreshed(result.first, result.second);
+    });
+    QFuture<StatusResult> future = QtConcurrent::run([installController, serverId, container]() -> StatusResult {
+        int status = 3;
+        const ErrorCode errorCode = installController->queryDockerContainerStatus(serverId, container, status);
+        if (errorCode != ErrorCode::NoError) {
+            return { 3, static_cast<int>(errorCode) };
+        }
+        return { status, static_cast<int>(ErrorCode::NoError) };
+    });
+    watcher->setFuture(future);
 }
 
 void InstallUiController::refreshContainerDiagnostics(const QString &serverId, int containerIndex, int port)
@@ -395,14 +419,27 @@ void InstallUiController::refreshContainerDiagnostics(const QString &serverId, i
         return;
     }
 
-    MtProxyContainerDiagnostics diag;
-    const ErrorCode errorCode = m_installController->queryMtProxyDiagnostics(serverId, container, port, diag);
-    if (errorCode != ErrorCode::NoError) {
-        emit containerDiagnosticsRefreshed(false, false, -1, QString(), QString());
-        return;
-    }
-    emit containerDiagnosticsRefreshed(diag.portReachable, diag.upstreamReachable, diag.clientsConnected,
-                                       diag.lastConfigRefresh, diag.statsEndpoint);
+    using DiagResult = std::pair<bool, MtProxyContainerDiagnostics>;
+    InstallController *installController = m_installController;
+    auto *watcher = new QFutureWatcher<DiagResult>(this);
+    QObject::connect(watcher, &QFutureWatcher<DiagResult>::finished, this, [this, watcher]() {
+        const DiagResult result = watcher->result();
+        watcher->deleteLater();
+        if (!result.first) {
+            emit containerDiagnosticsRefreshed(false, false, -1, QString(), QString());
+            return;
+        }
+        const MtProxyContainerDiagnostics &diag = result.second;
+        emit containerDiagnosticsRefreshed(diag.portReachable, diag.upstreamReachable, diag.clientsConnected,
+                                           diag.lastConfigRefresh, diag.statsEndpoint);
+    });
+    QFuture<DiagResult> future =
+            QtConcurrent::run([installController, serverId, container, port]() -> DiagResult {
+                MtProxyContainerDiagnostics diag;
+                const ErrorCode errorCode = installController->queryMtProxyDiagnostics(serverId, container, port, diag);
+                return { errorCode == ErrorCode::NoError, diag };
+            });
+    watcher->setFuture(future);
 }
 
 void InstallUiController::fetchContainerSecret(const QString &serverId, int containerIndex)
@@ -412,8 +449,17 @@ void InstallUiController::fetchContainerSecret(const QString &serverId, int cont
         return;
     }
 
-    const QString secret = m_installController->fetchDockerContainerSecret(serverId, container);
-    emit containerSecretFetched(secret);
+    InstallController *installController = m_installController;
+    auto *watcher = new QFutureWatcher<QString>(this);
+    QObject::connect(watcher, &QFutureWatcher<QString>::finished, this, [this, watcher]() {
+        const QString secret = watcher->result();
+        watcher->deleteLater();
+        emit containerSecretFetched(secret);
+    });
+    QFuture<QString> future = QtConcurrent::run([installController, serverId, container]() -> QString {
+        return installController->fetchDockerContainerSecret(serverId, container);
+    });
+    watcher->setFuture(future);
 }
 
 void InstallUiController::rebootServer(const QString &serverId)

client/ui/controllers/selfhosted/installUiController.h

@@ -114,7 +114,7 @@ signals:
     void removeAllContainersFinished(const QString &finishedMessage);
     void removeContainerFinished(const QString &finishedMessage);
     void setContainerEnabledFinished(bool enabled);
-    void containerStatusRefreshed(int status);
+    void containerStatusRefreshed(int status, int errorCode);
     void containerDiagnosticsRefreshed(bool portReachable, bool upstreamReachable, int clientsConnected,
                                        const QString &lastConfigRefresh, const QString &statsEndpoint);
     void containerSecretFetched(const QString &secret);

client/ui/models/api/apiAccountInfoModel.cpp

@@ -73,12 +73,6 @@ QVariant ApiAccountInfoModel::data(const QModelIndex &index, int role) const
         }
         return false;
     }
-    case IsProtocolSelectionSupportedRole: {
-        if (m_accountInfoData.supportedProtocols.size() > 1) {
-            return true;
-        }
-        return false;
-    }
     case IsSubscriptionExpiredRole: {
         if (m_accountInfoData.configType == serverConfigUtils::ConfigType::AmneziaFreeV3) {
             return false;
@@ -132,10 +126,6 @@ void ApiAccountInfoModel::updateModel(const QJsonObject &accountInfoObject, cons
     accountInfoData.subscriptionDescription = accountInfoObject.value(apiDefs::key::subscriptionDescription).toString();
     accountInfoData.isRenewalAvailable = accountInfoObject.value(apiDefs::key::isRenewalAvailable).toBool(false);
 
-    for (const auto &protocol : accountInfoObject.value(apiDefs::key::supportedProtocols).toArray()) {
-        accountInfoData.supportedProtocols.push_back(protocol.toString());
-    }
-
     m_accountInfoData = accountInfoData;
 
     m_supportInfo = accountInfoObject.value(apiDefs::key::supportInfo).toObject();
@@ -201,7 +191,6 @@ QHash<int, QByteArray> ApiAccountInfoModel::roleNames() const
     roles[IsComponentVisibleRole] = "isComponentVisible";
     roles[IsSubscriptionRenewalAvailableRole] = "isSubscriptionRenewalAvailable";
     roles[HasExpiredWorkerRole] = "hasExpiredWorker";
-    roles[IsProtocolSelectionSupportedRole] = "isProtocolSelectionSupported";
     roles[IsSubscriptionExpiredRole] = "isSubscriptionExpired";
     roles[IsSubscriptionExpiringSoonRole] = "isSubscriptionExpiringSoon";
     roles[IsInAppPurchaseRole] = "isInAppPurchase";

client/ui/models/api/apiAccountInfoModel.h

@@ -22,7 +22,6 @@ public:
         IsComponentVisibleRole,
         IsSubscriptionRenewalAvailableRole,
         HasExpiredWorkerRole,
-        IsProtocolSelectionSupportedRole,
         IsSubscriptionExpiredRole,
         IsSubscriptionExpiringSoonRole,
         IsInAppPurchaseRole
@@ -58,8 +57,6 @@ private:
 
         serverConfigUtils::ConfigType configType;
 
-        QStringList supportedProtocols;
-
         QString subscriptionDescription;
 
         bool isInAppPurchase = false;

client/ui/models/protocols/xrayConfigModel.cpp

@@ -4,6 +4,10 @@
 #include "core/protocols/protocolUtils.h"
 #include "core/utils/constants/configKeys.h"
 #include "core/utils/constants/protocolConstants.h"
+#include "core/utils/networkUtilities.h"
+
+#include <QHostAddress>
+#include <QRegularExpression>
 
 using namespace amnezia;
 using namespace ProtocolUtils;
@@ -272,7 +276,7 @@ void XrayConfigModel::updateModel(amnezia::DockerContainer container, const amne
     }
 
     if (!m_protocolConfig.serverConfig.isThirdPartyConfig) {
-        applyDefaultsToServerConfig(m_protocolConfig.serverConfig);
+        applyDefaultsToServerConfig(m_protocolConfig.serverConfig, false);
     }
 
     m_originalProtocolConfig = m_protocolConfig;
@@ -283,7 +287,7 @@ void XrayConfigModel::updateModel(amnezia::DockerContainer container, const amne
     }
 }
 
-void XrayConfigModel::applyDefaultsToServerConfig(amnezia::XrayServerConfig &config)
+void XrayConfigModel::applyDefaultsToServerConfig(amnezia::XrayServerConfig &config, bool fillFlowDefault)
 {
     if (config.port.isEmpty()) {
         config.port = protocols::xray::defaultPort;
@@ -306,7 +310,7 @@ void XrayConfigModel::applyDefaultsToServerConfig(amnezia::XrayServerConfig &con
         config.security = protocols::xray::defaultSecurity;
     }
 
-    if (config.flow.isEmpty()) {
+    if (fillFlowDefault && config.flow.isEmpty()) {
         config.flow = protocols::xray::defaultFlow;
     }
 
@@ -585,3 +589,87 @@ QString XrayConfigModel::mkcpDefaultWriteBufferSize()
 {
     return QString::fromLatin1(protocols::xray::defaultMkcpWriteBufferSize);
 }
+
+namespace {
+    bool isValidSingleHost(const QString &t)
+    {
+        if (t.isEmpty() || t.length() > 253) {
+            return false;
+        }
+        QHostAddress a(t);
+        if (a.protocol() == QHostAddress::IPv4Protocol) {
+            return NetworkUtilities::checkIPv4Format(t);
+        }
+        if (a.protocol() == QHostAddress::IPv6Protocol) {
+            return true;
+        }
+        static const QRegularExpression onlyDigits(QStringLiteral(R"(^\d+$)"));
+        if (onlyDigits.match(t).hasMatch()) {
+            return false;
+        }
+        QRegExp re = NetworkUtilities::domainRegExp();
+        re.setCaseSensitivity(Qt::CaseInsensitive);
+        return re.exactMatch(t);
+    }
+}
+
+bool XrayConfigModel::isValidHost(const QString &host)
+{
+    const QString t = host.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    return isValidSingleHost(t);
+}
+
+bool XrayConfigModel::isValidSni(const QString &sni)
+{
+    const QString t = sni.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    if (t.startsWith(QLatin1String("*."))) {
+        return isValidSingleHost(t.mid(2));
+    }
+    return isValidSingleHost(t);
+}
+
+bool XrayConfigModel::isValidPath(const QString &path)
+{
+    const QString t = path.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    return t.startsWith(QLatin1Char('/'));
+}
+
+QStringList XrayConfigModel::validationErrors() const
+{
+    QStringList errs;
+    const auto &srv = m_protocolConfig.serverConfig;
+
+    if (!srv.port.isEmpty()) {
+        bool ok = false;
+        const int p = srv.port.toInt(&ok);
+        if (!ok || p < 1 || p > 65535) {
+            errs << tr("Port must be in the range of 1 to 65535");
+        }
+    }
+
+    if (srv.security == QLatin1String("tls") || srv.security == QLatin1String("reality")) {
+        if (!isValidSni(srv.sni)) {
+            errs << tr("SNI: enter a valid IP address or domain name");
+        }
+    }
+
+    if (srv.transport == QLatin1String("xhttp")) {
+        if (!isValidHost(srv.xhttp.host)) {
+            errs << tr("Host: enter a valid IP address or domain name");
+        }
+        if (!isValidPath(srv.xhttp.path)) {
+            errs << tr("Path must start with \"/\"");
+        }
+    }
+
+    return errs;
+}

client/ui/models/protocols/xrayConfigModel.h

@@ -118,6 +118,11 @@ public:
     Q_INVOKABLE static QString mkcpDefaultReadBufferSize();
     Q_INVOKABLE static QString mkcpDefaultWriteBufferSize();
 
+    Q_INVOKABLE static bool isValidHost(const QString &host);
+    Q_INVOKABLE static bool isValidSni(const QString &sni);
+    Q_INVOKABLE static bool isValidPath(const QString &path);
+    Q_INVOKABLE QStringList validationErrors() const;
+
 public slots:
     void updateModel(amnezia::DockerContainer container, const amnezia::XrayProtocolConfig& protocolConfig);
     amnezia::XrayProtocolConfig getProtocolConfig();
@@ -137,7 +142,7 @@ private:
     amnezia::XrayProtocolConfig m_protocolConfig;
     amnezia::XrayProtocolConfig m_originalProtocolConfig;
 
-    void applyDefaultsToServerConfig(amnezia::XrayServerConfig& config);
+    void applyDefaultsToServerConfig(amnezia::XrayServerConfig& config, bool fillFlowDefault = true);
 };
 
 #endif // XRAYCONFIGMODEL_H

client/ui/models/services/mtProxyConfigModel.cpp

@@ -1,6 +1,6 @@
 #include "mtProxyConfigModel.h"
 
-#include "ui/models/utils/mtproxy_public_host_input.h"
+#include "ui/utils/mtProxyPublicHostInput.h"
 
 #include "core/utils/networkUtilities.h"
 #include "core/utils/qrCodeUtils.h"
@@ -8,19 +8,14 @@
 #include "core/utils/constants/configKeys.h"
 #include "qrcodegen.hpp"
 
-#include <QClipboard>
-#include <QGuiApplication>
 #include <QHostAddress>
 #include <QRegExp>
 #include <QRegularExpression>
 #include <QtGlobal>
-#include <qqml.h>
 
 using namespace amnezia;
 
-MtProxyConfigModel::MtProxyConfigModel(QObject *parent) : QAbstractListModel(parent) {
-    qmlRegisterType<PublicHostInputValidator>("MtProxyConfig", 1, 0, "PublicHostInputValidator");
-}
+MtProxyConfigModel::MtProxyConfigModel(QObject *parent) : QAbstractListModel(parent) {}
 
 int MtProxyConfigModel::rowCount(const QModelIndex &parent) const {
     Q_UNUSED(parent);
@@ -332,7 +327,7 @@ void MtProxyConfigModel::removeAdditionalSecret(int idx) {
 QVariantList MtProxyConfigModel::additionalSecretsList() const {
     QVariantList out;
     out.reserve(m_protocolConfig.additionalSecrets.size());
-    for (const auto &s: m_protocolConfig.additionalSecrets) {
+    for (const auto &s : m_protocolConfig.additionalSecrets) {
         if (!s.isEmpty()) {
             out.append(s);
         }
@@ -398,6 +393,9 @@ bool MtProxyConfigModel::isValidPublicHost(const QString &host) const {
         return NetworkUtilities::checkIPv4Format(t);
     }
     if (a.protocol() == QHostAddress::IPv6Protocol) {
+        if (a.isNull() || a.isLoopback() || a == QHostAddress(QHostAddress::AnyIPv6)) {
+            return false;
+        }
         return true;
     }
     static const QRegularExpression onlyAsciiDigits(QStringLiteral(R"(^\d+$)"));
@@ -504,20 +502,12 @@ bool MtProxyConfigModel::isValidFakeTlsDomain(const QString &domain) const {
     if (!re.exactMatch(t)) {
         return false;
     }
-    // ee + 32 hex (base secret) + hex(UTF-8 domain); keep headroom under typical client limits.
     if (t.toUtf8().size() > 111) {
         return false;
     }
     return true;
 }
 
-QString MtProxyConfigModel::clipboardText() const {
-    if (QClipboard *c = QGuiApplication::clipboard()) {
-        return c->text();
-    }
-    return QString();
-}
-
 QString MtProxyConfigModel::sanitizeFakeTlsDomainFieldText(const QString &input) const {
     const QString t = normalizeFakeTlsDomainInput(input);
     QString out;
@@ -578,7 +568,6 @@ QString MtProxyConfigModel::sanitizeMtProxyTagFieldText(const QString &input) co
     if (trimmed.startsWith(QLatin1String("0x"), Qt::CaseInsensitive)) {
         trimmed = trimmed.mid(2).trimmed();
     }
-    // Prefer a contiguous 32-hex run (paste from bot message with extra text).
     static const QRegularExpression runHex(QStringLiteral(R"(([0-9a-fA-F]{32}))"));
     const QRegularExpressionMatch m = runHex.match(trimmed);
     if (m.hasMatch()) {
@@ -599,18 +588,6 @@ QString MtProxyConfigModel::sanitizeMtProxyTagFieldText(const QString &input) co
     return out;
 }
 
-QString MtProxyConfigModel::sanitizeWorkersFieldText(const QString &input) const {
-    QString out;
-    out.reserve(qMin(input.size(), 3));
-    for (const QChar &c: input) {
-        const ushort u = c.unicode();
-        if (u >= '0' && u <= '9' && out.size() < 3) {
-            out.append(c);
-        }
-    }
-    return out;
-}
-
 QString MtProxyConfigModel::sanitizeOptionalIpv4FieldText(const QString &input) const {
     QString out;
     out.reserve(qMin(input.size(), 15));

client/ui/models/services/mtProxyConfigModel.h

@@ -128,16 +128,12 @@ public slots:
 
     Q_INVOKABLE bool isFakeTlsDomainInputAllowed(const QString &text) const;
 
-    Q_INVOKABLE QString clipboardText() const;
-
     Q_INVOKABLE QString sanitizePublicHostFieldText(const QString &input) const;
 
     Q_INVOKABLE QString sanitizePortFieldText(const QString &input) const;
 
     Q_INVOKABLE QString sanitizeMtProxyTagFieldText(const QString &input) const;
 
-    Q_INVOKABLE QString sanitizeWorkersFieldText(const QString &input) const;
-
     Q_INVOKABLE QString sanitizeOptionalIpv4FieldText(const QString &input) const;
 
     Q_INVOKABLE bool isFakeTlsDomainTypingIncomplete(const QString &text) const;

client/ui/models/services/telemtConfigModel.cpp

@@ -1,7 +1,12 @@
 #include "telemtConfigModel.h"
 
+#include "ui/utils/mtProxyPublicHostInput.h"
+
+#include <QHostAddress>
+#include <QRegExp>
 #include <QRegularExpression>
 
+#include "core/utils/networkUtilities.h"
 #include "core/utils/qrCodeUtils.h"
 #include "core/utils/constants/configKeys.h"
 #include "core/utils/constants/protocolConstants.h"
@@ -49,7 +54,11 @@ bool TelemtConfigModel::setData(const QModelIndex &index, const QVariant &value,
             break;
         }
         case Roles::TagRole: {
-            m_protocolConfig.tag = value.toString();
+            const QString tag = sanitizeMtProxyTagFieldText(value.toString());
+            if (!isValidMtProxyTag(tag)) {
+                return false;
+            }
+            m_protocolConfig.tag = tag;
             break;
         }
         case Roles::IsEnabledRole: {
@@ -57,7 +66,11 @@ bool TelemtConfigModel::setData(const QModelIndex &index, const QVariant &value,
             break;
         }
         case Roles::PublicHostRole: {
-            m_protocolConfig.publicHost = value.toString();
+            const QString h = value.toString().trimmed();
+            if (!isValidPublicHost(h)) {
+                return false;
+            }
+            m_protocolConfig.publicHost = h;
             break;
         }
         case Roles::TransportModeRole: {
@@ -65,7 +78,11 @@ bool TelemtConfigModel::setData(const QModelIndex &index, const QVariant &value,
             break;
         }
         case Roles::TlsDomainRole: {
-            m_protocolConfig.tlsDomain = value.toString();
+            const QString d = value.toString().trimmed();
+            if (!isValidFakeTlsDomain(d)) {
+                return false;
+            }
+            m_protocolConfig.tlsDomain = d;
             break;
         }
         case Roles::AdditionalSecretsRole: {
@@ -85,11 +102,19 @@ bool TelemtConfigModel::setData(const QModelIndex &index, const QVariant &value,
             break;
         }
         case Roles::NatInternalIpRole: {
-            m_protocolConfig.natInternalIp = value.toString();
+            const QString ip = value.toString().trimmed();
+            if (!isValidOptionalIpv4(ip)) {
+                return false;
+            }
+            m_protocolConfig.natInternalIp = ip;
             break;
         }
         case Roles::NatExternalIpRole: {
-            m_protocolConfig.natExternalIp = value.toString();
+            const QString ip = value.toString().trimmed();
+            if (!isValidOptionalIpv4(ip)) {
+                return false;
+            }
+            m_protocolConfig.natExternalIp = ip;
             break;
         }
         case Roles::MaskEnabledRole: {
@@ -238,7 +263,7 @@ void TelemtConfigModel::setSecret(const QString &secret) {
 }
 
 bool TelemtConfigModel::validateAndSetSecret(const QString &rawSecret) {
-    if (!QRegularExpression(QStringLiteral("^[0-9a-fA-F]{32}$")).match(rawSecret).hasMatch()) {
+    if (!QRegularExpression("^[0-9a-fA-F]{32}$").match(rawSecret).hasMatch()) {
         return false;
     }
     setData(index(0), rawSecret, SecretRole);
@@ -254,7 +279,11 @@ void TelemtConfigModel::setTag(const QString &tag) {
 }
 
 void TelemtConfigModel::setPublicHost(const QString &host) {
-    setData(index(0), host, PublicHostRole);
+    const QString t = host.trimmed();
+    if (!isValidPublicHost(t)) {
+        return;
+    }
+    setData(index(0), t, PublicHostRole);
 }
 
 void TelemtConfigModel::setTransportMode(const QString &mode) {
@@ -262,13 +291,15 @@ void TelemtConfigModel::setTransportMode(const QString &mode) {
 }
 
 QString TelemtConfigModel::getTransportMode() const {
-    return m_protocolConfig.transportMode.isEmpty() ? QString::fromUtf8(protocols::telemt::transportModeStandard)
-                                                    : m_protocolConfig.transportMode;
+    return m_protocolConfig.transportMode.isEmpty()
+           ? QString(protocols::telemt::transportModeStandard)
+           : m_protocolConfig.transportMode;
 }
 
 QString TelemtConfigModel::getTlsDomain() const {
-    return m_protocolConfig.tlsDomain.isEmpty() ? QString::fromUtf8(protocols::telemt::defaultTlsDomain)
-                                                : m_protocolConfig.tlsDomain;
+    return m_protocolConfig.tlsDomain.isEmpty()
+           ? QString(protocols::telemt::defaultTlsDomain)
+           : m_protocolConfig.tlsDomain;
 }
 
 QString TelemtConfigModel::getPublicHost() const {
@@ -276,7 +307,11 @@ QString TelemtConfigModel::getPublicHost() const {
 }
 
 void TelemtConfigModel::setTlsDomain(const QString &domain) {
-    setData(index(0), domain, TlsDomainRole);
+    const QString t = domain.trimmed();
+    if (!isValidFakeTlsDomain(t)) {
+        return;
+    }
+    setData(index(0), t, TlsDomainRole);
 }
 
 void TelemtConfigModel::setWorkersMode(const QString &mode) {
@@ -292,11 +327,19 @@ void TelemtConfigModel::setNatEnabled(bool enabled) {
 }
 
 void TelemtConfigModel::setNatInternalIp(const QString &ip) {
-    setData(index(0), ip, NatInternalIpRole);
+    const QString t = ip.trimmed();
+    if (!isValidOptionalIpv4(t)) {
+        return;
+    }
+    setData(index(0), t, NatInternalIpRole);
 }
 
 void TelemtConfigModel::setNatExternalIp(const QString &ip) {
-    setData(index(0), ip, NatExternalIpRole);
+    const QString t = ip.trimmed();
+    if (!isValidOptionalIpv4(t)) {
+        return;
+    }
+    setData(index(0), t, NatExternalIpRole);
 }
 
 void TelemtConfigModel::setMaskEnabled(bool enabled) {
@@ -334,6 +377,17 @@ void TelemtConfigModel::removeAdditionalSecret(int idx) {
     emit dataChanged(index(0), index(0), QList<int>{AdditionalSecretsRole});
 }
 
+QVariantList TelemtConfigModel::additionalSecretsList() const {
+    QVariantList out;
+    out.reserve(m_protocolConfig.additionalSecrets.size());
+    for (const auto &s : m_protocolConfig.additionalSecrets) {
+        if (!s.isEmpty()) {
+            out.append(s);
+        }
+    }
+    return out;
+}
+
 void TelemtConfigModel::setEnabled(bool enabled) {
     m_protocolConfig.isEnabled = enabled;
     emit dataChanged(index(0), index(0), QList<int>{IsEnabledRole});
@@ -348,15 +402,15 @@ QString TelemtConfigModel::generateQrCode(const QString &text) {
 }
 
 QString TelemtConfigModel::defaultTlsDomain() const {
-    return QString::fromUtf8(protocols::telemt::defaultTlsDomain);
+    return protocols::telemt::defaultTlsDomain;
 }
 
 QString TelemtConfigModel::defaultPort() const {
-    return QString::fromUtf8(protocols::telemt::defaultPort);
+    return protocols::telemt::defaultPort;
 }
 
 QString TelemtConfigModel::defaultWorkers() const {
-    return QString::fromUtf8(protocols::telemt::defaultWorkers);
+    return protocols::telemt::defaultWorkers;
 }
 
 int TelemtConfigModel::maxWorkers() const {
@@ -364,19 +418,303 @@ int TelemtConfigModel::maxWorkers() const {
 }
 
 QString TelemtConfigModel::transportModeStandard() const {
-    return QString::fromUtf8(protocols::telemt::transportModeStandard);
+    return protocols::telemt::transportModeStandard;
 }
 
 QString TelemtConfigModel::transportModeFakeTLS() const {
-    return QString::fromUtf8(protocols::telemt::transportModeFakeTLS);
+    return protocols::telemt::transportModeFakeTLS;
 }
 
 QString TelemtConfigModel::workersModeAuto() const {
-    return QString::fromUtf8(protocols::telemt::workersModeAuto);
+    return protocols::telemt::workersModeAuto;
 }
 
 QString TelemtConfigModel::workersModeManual() const {
-    return QString::fromUtf8(protocols::telemt::workersModeManual);
+    return protocols::telemt::workersModeManual;
+}
+
+bool TelemtConfigModel::isValidPublicHost(const QString &host) const {
+    const QString t = host.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    if (t.length() > 253) {
+        return false;
+    }
+    QHostAddress a(t);
+    if (a.protocol() == QHostAddress::IPv4Protocol) {
+        return NetworkUtilities::checkIPv4Format(t);
+    }
+    if (a.protocol() == QHostAddress::IPv6Protocol) {
+        if (a.isNull() || a.isLoopback() || a == QHostAddress(QHostAddress::AnyIPv6)) {
+            return false;
+        }
+        return true;
+    }
+    static const QRegularExpression onlyAsciiDigits(QStringLiteral(R"(^\d+$)"));
+    if (onlyAsciiDigits.match(t).hasMatch()) {
+        return false;
+    }
+    return NetworkUtilities::domainRegExp().exactMatch(t);
+}
+
+bool TelemtConfigModel::isPublicHostInputAllowed(const QString &text) const {
+    return mtproxyPublicHostInputAllowed(text);
+}
+
+bool TelemtConfigModel::isPublicHostTypingIncomplete(const QString &text) const {
+    const QString t = text.trimmed();
+    if (isValidPublicHost(t)) {
+        return false;
+    }
+
+    static const QRegularExpression onlyDigitDot(QStringLiteral(R"(^[0-9.]+$)"));
+    if (onlyDigitDot.match(t).hasMatch()) {
+        if (t.endsWith(QLatin1Char('.'))) {
+            return true;
+        }
+        const QStringList parts = t.split(QLatin1Char('.'), Qt::KeepEmptyParts);
+        if (parts.size() < 4) {
+            return true;
+        }
+        for (const QString &part: parts) {
+            if (part.isEmpty()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    if (t.contains(QLatin1Char(':'))) {
+        if (t.contains(QLatin1String(":::"))) {
+            return false;
+        }
+        if (t.endsWith(QLatin1Char(':'))) {
+            return true;
+        }
+        QHostAddress a(t);
+        if (a.protocol() == QHostAddress::IPv6Protocol) {
+            return false;
+        }
+        if (!t.contains(QLatin1String("::")) && t.count(QLatin1Char(':')) < 7 && !t.contains(QLatin1Char('.'))) {
+            return true;
+        }
+        return false;
+    }
+
+    if (!t.contains(QLatin1Char('.'))) {
+        return true;
+    }
+
+    return false;
+}
+
+bool TelemtConfigModel::isValidMtProxyTag(const QString &tag) const {
+    if (tag.isEmpty()) {
+        return true;
+    }
+    static const QRegularExpression re(
+            QStringLiteral("^([0-9a-fA-F]{%1})$").arg(protocols::telemt::botTagHexLength));
+    return re.match(tag).hasMatch();
+}
+
+bool TelemtConfigModel::isMtProxyTagTypingIncomplete(const QString &text) const {
+    const QString t = text.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    static const QRegularExpression hexOnly(QStringLiteral(R"(^[0-9a-fA-F]*$)"));
+    if (!hexOnly.match(t).hasMatch()) {
+        return false;
+    }
+    return t.size() < protocols::telemt::botTagHexLength;
+}
+
+int TelemtConfigModel::mtProxyBotTagHexLength() const {
+    return protocols::telemt::botTagHexLength;
+}
+
+bool TelemtConfigModel::isValidFakeTlsDomain(const QString &domain) const {
+    const QString t = domain.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    if (t.length() > 253) {
+        return false;
+    }
+    QHostAddress addr;
+    if (addr.setAddress(t)) {
+        return false;
+    }
+    static const QRegularExpression onlyAsciiDigits(QStringLiteral(R"(^\d+$)"));
+    if (onlyAsciiDigits.match(t).hasMatch()) {
+        return false;
+    }
+    QRegExp re(NetworkUtilities::domainRegExp());
+    re.setCaseSensitivity(Qt::CaseInsensitive);
+    if (!re.exactMatch(t)) {
+        return false;
+    }
+    if (t.toUtf8().size() > 111) {
+        return false;
+    }
+    return true;
+}
+
+QString TelemtConfigModel::normalizeFakeTlsDomainInput(const QString &input) const {
+    QString t = input.trimmed();
+    if (t.startsWith(QLatin1String("https://"), Qt::CaseInsensitive)) {
+        t = t.mid(8);
+    } else if (t.startsWith(QLatin1String("http://"), Qt::CaseInsensitive)) {
+        t = t.mid(7);
+    }
+    if (const int slash = t.indexOf(QLatin1Char('/')); slash >= 0) {
+        t = t.left(slash);
+    }
+    if (const int at = t.indexOf(QLatin1Char('@')); at >= 0) {
+        t = t.mid(at + 1);
+    }
+    if (const int colon = t.indexOf(QLatin1Char(':')); colon >= 0) {
+        t = t.left(colon);
+    }
+    if (t.startsWith(QLatin1String("www."), Qt::CaseInsensitive)) {
+        const QString rest = t.mid(4);
+        if (rest.contains(QLatin1Char('.'))) {
+            t = rest;
+        }
+    }
+    return t.trimmed();
+}
+
+bool TelemtConfigModel::isFakeTlsDomainTypingIncomplete(const QString &text) const {
+    const QString t = text.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    if (isValidFakeTlsDomain(t)) {
+        return false;
+    }
+    if (t.contains(QLatin1Char('/')) || t.contains(QLatin1Char(':')) || t.contains(QLatin1Char('@'))
+        || t.contains(QLatin1Char(' '))) {
+        return false;
+    }
+    if (t.contains(QLatin1String(".."))) {
+        return false;
+    }
+    if (!t.contains(QLatin1Char('.'))) {
+        return true;
+    }
+    if (t.endsWith(QLatin1Char('.'))) {
+        return true;
+    }
+    static const QRegularExpression legalPartial(QStringLiteral(R"(^[a-zA-Z0-9.-]*$)"));
+    if (!legalPartial.match(t).hasMatch()) {
+        return false;
+    }
+    return true;
+}
+
+bool TelemtConfigModel::isFakeTlsDomainInputAllowed(const QString &text) const {
+    if (text.length() > 253) {
+        return false;
+    }
+    static const QRegularExpression re(QStringLiteral(R"(^[a-zA-Z0-9.-]*$)"));
+    return re.match(text).hasMatch();
+}
+
+QString TelemtConfigModel::sanitizeFakeTlsDomainFieldText(const QString &input) const {
+    const QString t = normalizeFakeTlsDomainInput(input);
+    QString out;
+    out.reserve(t.size());
+    for (const QChar &c: t) {
+        const ushort u = c.unicode();
+        const bool letter = (u >= 'a' && u <= 'z') || (u >= 'A' && u <= 'Z');
+        const bool digit = (u >= '0' && u <= '9');
+        if (letter || digit || u == '.' || u == '-') {
+            out.append(c);
+        }
+    }
+    if (out.size() > 253) {
+        out.truncate(253);
+    }
+    return out;
+}
+
+QString TelemtConfigModel::sanitizePublicHostFieldText(const QString &input) const {
+    QString out;
+    const int cap = qMin(input.size(), 253);
+    out.reserve(cap);
+    for (const QChar &c: input) {
+        if (out.size() >= 253) {
+            break;
+        }
+        const ushort u = c.unicode();
+        if ((u >= 'a' && u <= 'z') || (u >= 'A' && u <= 'Z') || (u >= '0' && u <= '9') || u == '.' || u == ':' ||
+            u == '-') {
+            out.append(c);
+        }
+    }
+    return out;
+}
+
+QString TelemtConfigModel::sanitizePortFieldText(const QString &input) const {
+    QString out;
+    out.reserve(qMin(input.size(), 5));
+    for (const QChar &c: input) {
+        const ushort u = c.unicode();
+        if (u >= '0' && u <= '9' && out.size() < 5) {
+            out.append(c);
+        }
+    }
+    return out;
+}
+
+QString TelemtConfigModel::sanitizeMtProxyTagFieldText(const QString &input) const {
+    QString trimmed = input.trimmed();
+    if (trimmed.startsWith(QLatin1String("0x"), Qt::CaseInsensitive)) {
+        trimmed = trimmed.mid(2).trimmed();
+    }
+    static const QRegularExpression runHex(QStringLiteral(R"(([0-9a-fA-F]{32}))"));
+    const QRegularExpressionMatch m = runHex.match(trimmed);
+    if (m.hasMatch()) {
+        return m.captured(1);
+    }
+    const int cap = protocols::telemt::botTagHexLength;
+    QString out;
+    out.reserve(qMin(trimmed.size(), cap));
+    for (const QChar &c: trimmed) {
+        if (out.size() >= cap) {
+            break;
+        }
+        const ushort u = c.unicode();
+        if ((u >= '0' && u <= '9') || (u >= 'a' && u <= 'f') || (u >= 'A' && u <= 'F')) {
+            out.append(c);
+        }
+    }
+    return out;
+}
+
+QString TelemtConfigModel::sanitizeOptionalIpv4FieldText(const QString &input) const {
+    QString out;
+    out.reserve(qMin(input.size(), 15));
+    for (const QChar &c: input) {
+        if (out.size() >= 15) {
+            break;
+        }
+        const ushort u = c.unicode();
+        if ((u >= '0' && u <= '9') || u == '.') {
+            out.append(c);
+        }
+    }
+    return out;
+}
+
+bool TelemtConfigModel::isValidOptionalIpv4(const QString &ip) const {
+    const QString t = ip.trimmed();
+    if (t.isEmpty()) {
+        return true;
+    }
+    return NetworkUtilities::checkIPv4Format(t);
 }
 
 QHash<int, QByteArray> TelemtConfigModel::roleNames() const {

client/ui/models/services/telemtConfigModel.h

@@ -88,6 +88,8 @@ public slots:
 
     Q_INVOKABLE void removeAdditionalSecret(int idx);
 
+    Q_INVOKABLE QVariantList additionalSecretsList() const;
+
     Q_INVOKABLE QString generateQrCode(const QString &text);
 
     Q_INVOKABLE void setEnabled(bool enabled);
@@ -116,12 +118,44 @@ public slots:
 
     Q_INVOKABLE QString workersModeManual() const;
 
+    Q_INVOKABLE bool isValidPublicHost(const QString &host) const;
+
+    Q_INVOKABLE bool isPublicHostInputAllowed(const QString &text) const;
+
+    Q_INVOKABLE bool isPublicHostTypingIncomplete(const QString &text) const;
+
+    Q_INVOKABLE bool isValidMtProxyTag(const QString &tag) const;
+
+    Q_INVOKABLE bool isMtProxyTagTypingIncomplete(const QString &text) const;
+
+    Q_INVOKABLE int mtProxyBotTagHexLength() const;
+
+    Q_INVOKABLE bool isValidFakeTlsDomain(const QString &domain) const;
+
+    Q_INVOKABLE bool isFakeTlsDomainTypingIncomplete(const QString &text) const;
+
+    Q_INVOKABLE bool isFakeTlsDomainInputAllowed(const QString &text) const;
+
+    Q_INVOKABLE QString sanitizeFakeTlsDomainFieldText(const QString &input) const;
+
+    Q_INVOKABLE QString sanitizePublicHostFieldText(const QString &input) const;
+
+    Q_INVOKABLE QString sanitizePortFieldText(const QString &input) const;
+
+    Q_INVOKABLE QString sanitizeMtProxyTagFieldText(const QString &input) const;
+
+    Q_INVOKABLE QString sanitizeOptionalIpv4FieldText(const QString &input) const;
+
+    Q_INVOKABLE bool isValidOptionalIpv4(const QString &ip) const;
+
 protected:
     QHash<int, QByteArray> roleNames() const override;
 
 private:
     static void applyDefaults(amnezia::TelemtProtocolConfig &c);
 
+    QString normalizeFakeTlsDomainInput(const QString &input) const;
+
     amnezia::DockerContainer m_container = amnezia::DockerContainer::None;
     QJsonObject m_fullConfig;
     amnezia::TelemtProtocolConfig m_protocolConfig;

client/ui/qml/Controls2/CaptchaDialogType.qml

@@ -20,13 +20,42 @@ Popup {
     signal captchaSolved(string captchaId, string solution)
     signal refreshCaptchaRequested()
 
+    readonly property int keyboardHeight: {
+        if (PageController.imeHeight > 0) {
+            return PageController.imeHeight
+        }
+        if (Qt.platform.os === "ios" && Qt.inputMethod.visible) {
+            const r = Qt.inputMethod.keyboardRectangle
+            if (r.height <= 0) {
+                return 0
+            }
+            return Math.max(0, Math.round(parent.height - r.y))
+        }
+        return 0
+    }
+
     leftMargin: 25
     rightMargin: 25
     bottomMargin: 70 + SettingsController.safeAreaBottomMargin
 
     width: parent.width - leftMargin - rightMargin
 
-    anchors.centerIn: parent
+    x: Math.round((parent.width - width) / 2)
+    y: {
+        const centered = Math.round((parent.height - height) / 2)
+        if (root.keyboardHeight === 0) {
+            return centered
+        }
+        return Math.max(20, Math.min(centered, parent.height - root.keyboardHeight - height - 16))
+    }
+
+    Behavior on y {
+        NumberAnimation {
+            duration: 150
+            easing.type: Easing.OutCubic
+        }
+    }
+
     modal: true
     closePolicy: Popup.NoAutoClose
 
@@ -37,7 +66,7 @@ Popup {
     onOpened: {
         timer.start()
         solutionField.textField.text = ""
-        solutionField.textField.focus = true
+        solutionField.textField.forceActiveFocus()
     }
 
     onCaptchaIdChanged: {

client/ui/qml/Controls2/ContextMenuType.qml

@@ -4,7 +4,7 @@ import QtQuick.Controls
 Menu {
     property var textObj
 
-    popupType: Popup.Native
+    popupType: Qt.platform.os === "ios" ? Popup.Item : Popup.Native
 
     property Item inputBlocker: null
 

client/ui/qml/Controls2/DropDownType.qml

@@ -42,6 +42,7 @@ Item {
     property int rootButtonTextBottomMargin: 16
 
     property real drawerHeight: 0.9
+    property bool fitContent: false
     property Item drawerParent
     property Component listView
 
@@ -219,12 +220,20 @@ Item {
         parent: drawerParent
 
         anchors.fill: parent
-        expandedHeight: drawerParent.height * drawerHeight
+        property real measuredContentHeight: 0
+        expandedHeight: (root.fitContent && measuredContentHeight > 0)
+            ? Math.min(measuredContentHeight, drawerParent.height * root.drawerHeight)
+            : drawerParent.height * root.drawerHeight
 
         expandedStateContent: Item {
             id: container
             implicitHeight: menu.expandedHeight
 
+            property real fitHeight: backButton.implicitHeight + titleLabel.implicitHeight
+                                     + (listViewLoader.item ? listViewLoader.item.contentHeight : 0) + 48
+            onFitHeightChanged: menu.measuredContentHeight = fitHeight
+            Component.onCompleted: menu.measuredContentHeight = fitHeight
+
             ColumnLayout {
                 id: header
 
@@ -238,6 +247,7 @@ Item {
                 }
 
                 Header2Type {
+                    id: titleLabel
                     Layout.leftMargin: 16
                     Layout.rightMargin: 16
                     Layout.bottomMargin: 16

client/ui/qml/Controls2/MinMaxRowType.qml

@@ -12,8 +12,8 @@ import "../Controls2/TextTypes"
 //   MinMaxRowType {
 //       minValue: "0"
 //       maxValue: "0"
-//       onMinChanged: someProperty = val
-//       onMaxChanged: someProperty = val
+//       onMinChanged: function(val) { someProperty = val }
+//       onMaxChanged: function(val) { someProperty = val }
 //   }
 Item {
     id: root
@@ -21,41 +21,128 @@ Item {
     property string minValue: "0"
     property string maxValue: "0"
 
+    property int minLimit: 0
+    property int maxLimit: 2147483647
+
+    property string hintText: root.minLimit > 0
+                              ? (root.minLimit + "–" + root.maxLimit)
+                              : ("≤ " + root.maxLimit)
+
     signal minChanged(string val)
     signal maxChanged(string val)
+    signal edited()
 
-    implicitHeight: row.implicitHeight
-    implicitWidth: row.implicitWidth
+    implicitHeight: col.implicitHeight
+    implicitWidth: col.implicitWidth
 
-    RowLayout {
-        id: row
+    function clampValue(text) {
+        if (text === "")
+            return ""
+        var n = parseInt(text, 10)
+        if (isNaN(n))
+            return ""
+        if (n < root.minLimit)
+            n = root.minLimit
+        if (n > root.maxLimit)
+            n = root.maxLimit
+        return String(n)
+    }
+
+    function capEdit(tf, holder) {
+        if (tf.text !== "" && parseInt(tf.text, 10) > root.maxLimit) {
+            tf.text = holder.lastValid
+            tf.cursorPosition = tf.text.length
+        } else {
+            holder.lastValid = tf.text
+        }
+    }
+
+    ColumnLayout {
+        id: col
         anchors.fill: parent
-        spacing: 10
+        spacing: 4
 
-        // Min field
-        TextFieldWithHeaderType {
+        RowLayout {
+            id: row
             Layout.fillWidth: true
-            headerText: qsTr("Min")
-            textField.text: root.minValue
-            textField.validator: IntValidator { bottom: 0 }
-            textField.onEditingFinished: {
-                if (textField.text !== root.minValue) {
-                    root.minChanged(textField.text)
+            spacing: 10
+
+            // Min field
+            TextFieldWithHeaderType {
+                id: minField
+                property string lastValid: ""
+                Layout.fillWidth: true
+                headerText: qsTr("Min")
+                textField.maximumLength: 10
+                textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                textField.onActiveFocusChanged: {
+                    if (minField.textField.activeFocus)
+                        minField.lastValid = minField.textField.text
+                }
+                textField.onTextEdited: { root.capEdit(minField.textField, minField); root.edited() }
+                textField.onEditingFinished: {
+                    var v = root.clampValue(minField.textField.text)
+                    if (v !== "" && root.maxValue !== "") {
+                        var mx = parseInt(root.maxValue, 10)
+                        if (!isNaN(mx) && parseInt(v, 10) > mx)
+                            root.maxChanged(v)
+                    }
+                    if (v !== root.minValue)
+                        root.minChanged(v)
+                    else if (minField.textField.text !== v)
+                        minField.textField.text = v
+                }
+
+                Binding {
+                    target: minField.textField
+                    property: "text"
+                    value: root.minValue
+                    when: !minField.textField.activeFocus
+                    restoreMode: Binding.RestoreNone
+                }
+            }
+
+            // Max field
+            TextFieldWithHeaderType {
+                id: maxField
+                property string lastValid: ""
+                Layout.fillWidth: true
+                headerText: qsTr("Max")
+                textField.maximumLength: 10
+                textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                textField.onActiveFocusChanged: {
+                    if (maxField.textField.activeFocus)
+                        maxField.lastValid = maxField.textField.text
+                }
+                textField.onTextEdited: { root.capEdit(maxField.textField, maxField); root.edited() }
+                textField.onEditingFinished: {
+                    var v = root.clampValue(maxField.textField.text)
+                    if (v !== "" && root.minValue !== "") {
+                        var mn = parseInt(root.minValue, 10)
+                        if (!isNaN(mn) && parseInt(v, 10) < mn)
+                            v = String(mn)
+                    }
+                    if (v !== root.maxValue)
+                        root.maxChanged(v)
+                    else if (maxField.textField.text !== v)
+                        maxField.textField.text = v
+                }
+
+                Binding {
+                    target: maxField.textField
+                    property: "text"
+                    value: root.maxValue
+                    when: !maxField.textField.activeFocus
+                    restoreMode: Binding.RestoreNone
                 }
             }
         }
 
-        // Max field
-        TextFieldWithHeaderType {
+        SmallTextType {
+            visible: root.hintText !== ""
+            text: root.hintText
+            color: AmneziaStyle.color.mutedGray
             Layout.fillWidth: true
-            headerText: qsTr("Max")
-            textField.text: root.maxValue
-            textField.validator: IntValidator { bottom: 0 }
-            textField.onEditingFinished: {
-                if (textField.text !== root.maxValue) {
-                    root.maxChanged(textField.text)
-                }
-            }
         }
     }
 }

client/ui/qml/Controls2/TextAreaType.qml

@@ -93,7 +93,9 @@ Rectangle {
 
                 wrapMode: Text.Wrap
 
-                ContextMenu.menu: ContextMenuType {
+                ContextMenu.menu: Qt.platform.os === "ios" ? null : contextMenu
+
+                ContextMenuType {
                     id: contextMenu
                     textObj: textArea
                 }

client/ui/qml/Controls2/TextAreaWithFooterType.qml

@@ -79,7 +79,9 @@ Rectangle {
 
                 wrapMode: Text.Wrap
 
-                ContextMenu.menu: ContextMenuType {
+                ContextMenu.menu: Qt.platform.os === "ios" ? null : contextMenu
+
+                ContextMenuType {
                     id: contextMenu
                     textObj: textArea
                 }

client/ui/qml/Controls2/TextFieldWithHeaderType.qml

@@ -144,7 +144,9 @@ Item {
                             }
                         }
 
-                        ContextMenu.menu: ContextMenuType {
+                        ContextMenu.menu: Qt.platform.os === "ios" ? null : contextMenu
+
+                        ContextMenuType {
                             id: contextMenu
                             textObj: textField
                         }

client/ui/qml/Pages2/PageHome.qml

@@ -21,6 +21,41 @@ PageType {
 
     property var containersDropDownRef: null
 
+    property var apiAvailableProtocols: []
+    property string apiCurrentProtocol: ""
+
+    readonly property bool isApiProtocolSelectionVisible: ServersUiController.isDefaultServerFromApi && root.apiAvailableProtocols.length > 0
+
+    function updateApiProtocolState() {
+        if (ServersUiController.isDefaultServerFromApi) {
+            root.apiAvailableProtocols = SubscriptionUiController.availableProtocols(ServersUiController.defaultServerId)
+            root.apiCurrentProtocol = SubscriptionUiController.currentProtocol(ServersUiController.defaultServerId)
+        } else {
+            root.apiAvailableProtocols = []
+            root.apiCurrentProtocol = ""
+        }
+    }
+
+    function protocolDisplayName(protocol) {
+        switch (protocol) {
+        case "awg": return "AmneziaWG"
+        case "vless": return "VLESS"
+        default: return protocol
+        }
+    }
+
+    Component.onCompleted: {
+        root.updateApiProtocolState()
+    }
+
+    Connections {
+        target: ServersUiController
+
+        function onDefaultServerIdChanged() {
+            root.updateApiProtocolState()
+        }
+    }
+
     Connections {
         target: Qt.application
 
@@ -210,6 +245,10 @@ PageType {
                     drawer.collapsedHeight = collapsed.implicitHeight
                 }
 
+                onImplicitHeightChanged: {
+                    drawer.collapsedHeight = collapsed.implicitHeight
+                }
+
                 DividerType {
                     Layout.topMargin: 10
                     Layout.fillWidth: false
@@ -311,7 +350,7 @@ PageType {
                     objectName: "rowLayoutLabel"
                     Layout.alignment: Qt.AlignHCenter | Qt.AlignVCenter
                     Layout.topMargin: 8
-                    Layout.bottomMargin: drawer.isCollapsedStateActive ? 44 : ServersUiController.isDefaultServerFromApi ? 61 : 16
+                    Layout.bottomMargin: root.isApiProtocolSelectionVisible ? 8 : (drawer.isCollapsedStateActive ? 44 : ServersUiController.isDefaultServerFromApi ? 61 : 16)
                     spacing: 0
 
                     BasicButtonType {
@@ -365,6 +404,61 @@ PageType {
                         }
                     }
                 }
+
+                RowLayout {
+                    objectName: "protocolRowLayout"
+                    Layout.alignment: Qt.AlignHCenter | Qt.AlignVCenter
+                    Layout.bottomMargin: drawer.isCollapsedStateActive ? 44 : 61
+                    spacing: 0
+
+                    visible: root.isApiProtocolSelectionVisible
+
+                    BasicButtonType {
+                        id: protocolButton
+                        objectName: "protocolButton"
+
+                        enabled: root.apiAvailableProtocols.length > 1
+                        hoverEnabled: enabled
+
+                        implicitHeight: 36
+
+                        leftPadding: 16
+                        rightPadding: 16
+
+                        defaultColor: AmneziaStyle.color.transparent
+                        hoveredColor: AmneziaStyle.color.translucentWhite
+                        pressedColor: AmneziaStyle.color.sheerWhite
+                        disabledColor: AmneziaStyle.color.transparent
+                        textColor: AmneziaStyle.color.mutedGray
+
+                        buttonTextLabel.lineHeight: 16
+                        buttonTextLabel.font.pixelSize: 13
+                        buttonTextLabel.font.weight: 400
+
+                        text: root.apiAvailableProtocols.length > 1
+                            ? root.protocolDisplayName(root.apiCurrentProtocol)
+                            : root.protocolDisplayName(root.apiAvailableProtocols[0])
+                        leftImageSource: "qrc:/images/controls/arrow-left-right.svg"
+                        leftImageColor: AmneziaStyle.color.mutedGray
+
+                        rightImageSource: enabled ? "qrc:/images/controls/chevron-down.svg" : ""
+
+                        Keys.onEnterPressed: this.clicked()
+                        Keys.onReturnPressed: this.clicked()
+
+                        onClicked: {
+                            if (ConnectionController.isConnectionInProgress) {
+                                PageController.showNotificationMessage(qsTr("Unable change protocol while trying to make an active connection"))
+                                return
+                            }
+                            if (ConnectionController.isConnected) {
+                                PageController.showNotificationMessage(qsTr("Cannot change protocol during active connection"))
+                                return
+                            }
+                            protocolSelectionDrawer.openTriggered()
+                        }
+                    }
+                }
             }
 
             ColumnLayout {
@@ -479,4 +573,119 @@ PageType {
             }
         }
     }
+
+    DrawerType2 {
+        id: protocolSelectionDrawer
+        objectName: "protocolSelectionDrawer"
+
+        anchors.fill: parent
+
+        expandedStateContent: Item {
+            id: protocolDrawerContainer
+
+            implicitHeight: root.height * 0.5
+
+            Component.onCompleted: {
+                protocolSelectionDrawer.expandedHeight = protocolDrawerContainer.implicitHeight
+            }
+
+            ColumnLayout {
+                id: protocolDrawerHeader
+
+                anchors.top: parent.top
+                anchors.left: parent.left
+                anchors.right: parent.right
+                anchors.topMargin: 16
+
+                BackButtonType {
+                    id: protocolDrawerBackButton
+
+                    Layout.fillWidth: true
+
+                    backButtonImage: "qrc:/images/controls/arrow-left.svg"
+                    backButtonFunction: function() { protocolSelectionDrawer.closeTriggered() }
+                }
+
+                Header2Type {
+                    Layout.fillWidth: true
+                    Layout.topMargin: 16
+                    Layout.leftMargin: 16
+                    Layout.rightMargin: 16
+
+                    headerText: qsTr("VPN protocol")
+                }
+            }
+
+            ListViewType {
+                id: protocolDrawerListView
+
+                anchors.top: protocolDrawerHeader.bottom
+                anchors.left: parent.left
+                anchors.right: parent.right
+                anchors.bottom: parent.bottom
+                anchors.topMargin: 16
+
+                model: root.apiAvailableProtocols
+
+                ButtonGroup {
+                    id: protocolDrawerButtonGroup
+                }
+
+                delegate: Item {
+                    implicitWidth: protocolDrawerListView.width
+                    implicitHeight: protocolDrawerDelegate.implicitHeight
+
+                    ColumnLayout {
+                        id: protocolDrawerDelegate
+
+                        anchors.fill: parent
+                        anchors.leftMargin: 16
+                        anchors.rightMargin: 16
+
+                        VerticalRadioButton {
+                            id: protocolDrawerRadioButton
+
+                            Layout.fillWidth: true
+
+                            text: root.protocolDisplayName(modelData)
+
+                            ButtonGroup.group: protocolDrawerButtonGroup
+
+                            checkable: !ConnectionController.isConnected
+                            checked: modelData === root.apiCurrentProtocol
+
+                            onClicked: {
+                                protocolSelectionDrawer.closeTriggered()
+
+                                if (modelData === root.apiCurrentProtocol) {
+                                    return
+                                }
+
+                                if (ConnectionController.isConnected) {
+                                    PageController.showNotificationMessage(qsTr("Cannot change protocol during active connection"))
+                                    return
+                                }
+
+                                PageController.showBusyIndicator(true)
+                                ServersUiController.setProcessedServerId(ServersUiController.defaultServerId)
+                                SubscriptionUiController.setCurrentProtocol(ServersUiController.defaultServerId, modelData)
+                                if (!SubscriptionUiController.updateServiceFromGateway(ServersUiController.defaultServerId, "", "", true)) {
+                                    SubscriptionUiController.setCurrentProtocol(ServersUiController.defaultServerId, root.apiCurrentProtocol)
+                                }
+                                root.updateApiProtocolState()
+                                PageController.showBusyIndicator(false)
+                            }
+
+                            Keys.onEnterPressed: protocolDrawerRadioButton.clicked()
+                            Keys.onReturnPressed: protocolDrawerRadioButton.clicked()
+                        }
+
+                        DividerType {
+                            Layout.fillWidth: true
+                        }
+                    }
+                }
+            }
+        }
+    }
 }

client/ui/qml/Pages2/PageProtocolXraySecuritySettings.qml

@@ -15,6 +15,8 @@ import "../Components"
 PageType {
     id: root
 
+    property bool editDirty: false
+
     BackButtonType {
         id: backButton
         anchors.top: parent.top
@@ -90,6 +92,7 @@ PageType {
 
                 DropDownType {
                     id: tlsAlpnDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 16
                     Layout.leftMargin: 16
@@ -133,6 +136,7 @@ PageType {
 
                 DropDownType {
                     id: tlsFingerprintDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 8
                     Layout.leftMargin: 16
@@ -175,14 +179,21 @@ PageType {
                 }
 
                 TextFieldWithHeaderType {
+                    id: sniFieldTls
                     Layout.fillWidth: true
                     Layout.leftMargin: 16
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("Server Name (SNI)")
                     textField.text: sni
+                    textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9.*_-]*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== sni)
                     textField.onEditingFinished: {
-                        if (textField.text !== sni) sni = textField.text
+                        var v = textField.text.trim()
+                        if (v !== sni) sni = v
+                        else if (textField.text !== v) textField.text = v
+                        sniFieldTls.errorText = XrayConfigModel.isValidSni(v) ? "" : qsTr("Enter a valid IP address or domain name")
+                        root.editDirty = false
                     }
                 }
             }
@@ -195,6 +206,7 @@ PageType {
 
                 DropDownType {
                     id: realityFingerprintDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 16
                     Layout.leftMargin: 16
@@ -237,14 +249,21 @@ PageType {
                 }
 
                 TextFieldWithHeaderType {
+                    id: sniFieldReality
                     Layout.fillWidth: true
                     Layout.leftMargin: 16
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("Server Name (SNI)")
                     textField.text: sni
+                    textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9.*_-]*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== sni)
                     textField.onEditingFinished: {
-                        if (textField.text !== sni) sni = textField.text
+                        var v = textField.text.trim()
+                        if (v !== sni) sni = v
+                        else if (textField.text !== v) textField.text = v
+                        sniFieldReality.errorText = XrayConfigModel.isValidSni(v) ? "" : qsTr("Enter a valid IP address or domain name")
+                        root.editDirty = false
                     }
                 }
             }
@@ -265,10 +284,15 @@ PageType {
         anchors.rightMargin: 16
         anchors.bottomMargin: 16 + PageController.safeAreaBottomMargin
 
-        visible: listView.enabled && XrayConfigModel.hasUnsavedChanges
+        visible: listView.enabled && (XrayConfigModel.hasUnsavedChanges || root.editDirty)
         enabled: visible
         text: qsTr("Save")
         clickedFunc: function () {
+            var errs = XrayConfigModel.validationErrors()
+            if (errs.length > 0) {
+                PageController.showErrorMessage(errs.join("\n"))
+                return
+            }
             var headerText = qsTr("Save settings?")
             var descriptionText = qsTr("All users with whom you shared a connection with will no longer be able to connect to it.")
             var yesButtonText = qsTr("Continue")

client/ui/qml/Pages2/PageProtocolXraySettings.qml

@@ -109,6 +109,7 @@ PageType {
                 Layout.rightMargin: 16
                 enabled: listView.enabled
                 headerText: qsTr("Port")
+                subtitleText: qsTr("1–65535")
 
                 Binding {
                     target: textFieldWithHeaderType.textField
@@ -119,8 +120,8 @@ PageType {
                 }
 
                 textField.maximumLength: 5
-                textField.validator: IntValidator {
-                    bottom: 1; top: 65535
+                textField.validator: RegularExpressionValidator {
+                    regularExpression: /^(|\d{1,4}|[1-5]\d{4}|6[0-4]\d{3}|65[0-4]\d{2}|655[0-2]\d|6553[0-5])$/
                 }
                 textField.onActiveFocusChanged: {
                     if (textField.activeFocus && textField.text === "" && port !== "") {
@@ -131,9 +132,19 @@ PageType {
                     root.portDirty = (textField.text !== port)
                 }
                 textField.onEditingFinished: {
-                    if (textField.text !== port) {
-                        port = textField.text
+                    var v = textFieldWithHeaderType.textField.text
+                    if (v !== "") {
+                        var n = parseInt(v, 10)
+                        if (isNaN(n) || n < 1)
+                            n = 1
+                        if (n > 65535)
+                            n = 65535
+                        v = String(n)
+                        if (textFieldWithHeaderType.textField.text !== v)
+                            textFieldWithHeaderType.textField.text = v
                     }
+                    if (v !== port)
+                        port = v
                     root.portDirty = false
                 }
                 checkEmptyText: true
@@ -198,6 +209,11 @@ PageType {
                 text: qsTr("Save")
                 onClicked: function() {
                     forceActiveFocus()
+                    var errs = XrayConfigModel.validationErrors()
+                    if (errs.length > 0) {
+                        PageController.showErrorMessage(errs.join("\n"))
+                        return
+                    }
                     var headerText = qsTr("Save settings?")
                     var descriptionText = qsTr("All users with whom you shared a connection with will no longer be able to connect to it.")
                     var yesButtonText = qsTr("Continue")

client/ui/qml/Pages2/PageProtocolXrayTransportSettings.qml

@@ -15,6 +15,21 @@ import "../Components"
 PageType {
     id: root
 
+    property bool editDirty: false
+
+    function clampInt(text, lo, hi) {
+        if (text === "")
+            return ""
+        var n = parseInt(text, 10)
+        if (isNaN(n))
+            return ""
+        if (n < lo)
+            n = lo
+        if (n > hi)
+            n = hi
+        return String(n)
+    }
+
     BackButtonType {
         id: backButton
         anchors.top: parent.top
@@ -108,10 +123,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("TTI")
-                    subtitleText: qsTr("Default: %1 ms", "mKCP TTI").arg(XrayConfigModel.mkcpDefaultTti())
+                    subtitleText: qsTr("Range 10–100, default %1 ms", "mKCP TTI").arg(XrayConfigModel.mkcpDefaultTti())
                     textField.text: mkcpTti
+                    textField.maximumLength: 3
+                    textField.validator: RegularExpressionValidator { regularExpression: /^(|\d{1,2}|100)$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== mkcpTti)
                     textField.onEditingFinished: {
-                        if (textField.text !== mkcpTti) mkcpTti = textField.text
+                        var v = root.clampInt(textField.text, 10, 100)
+                        if (v !== mkcpTti) mkcpTti = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -121,10 +142,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("uplinkCapacity")
-                    subtitleText: qsTr("Default: %1 Mbit/s", "mKCP uplink").arg(XrayConfigModel.mkcpDefaultUplinkCapacity())
+                    subtitleText: qsTr("≥ 0, default %1 MB/s", "mKCP uplink").arg(XrayConfigModel.mkcpDefaultUplinkCapacity())
                     textField.text: mkcpUplinkCapacity
+                    textField.maximumLength: 10
+                    textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== mkcpUplinkCapacity)
                     textField.onEditingFinished: {
-                        if (textField.text !== mkcpUplinkCapacity) mkcpUplinkCapacity = textField.text
+                        var v = root.clampInt(textField.text, 0, 2147483647)
+                        if (v !== mkcpUplinkCapacity) mkcpUplinkCapacity = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -134,10 +161,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("downlinkCapacity")
-                    subtitleText: qsTr("Default: %1 Mbit/s", "mKCP downlink").arg(XrayConfigModel.mkcpDefaultDownlinkCapacity())
+                    subtitleText: qsTr("≥ 0, default %1 MB/s", "mKCP downlink").arg(XrayConfigModel.mkcpDefaultDownlinkCapacity())
                     textField.text: mkcpDownlinkCapacity
+                    textField.maximumLength: 10
+                    textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== mkcpDownlinkCapacity)
                     textField.onEditingFinished: {
-                        if (textField.text !== mkcpDownlinkCapacity) mkcpDownlinkCapacity = textField.text
+                        var v = root.clampInt(textField.text, 0, 2147483647)
+                        if (v !== mkcpDownlinkCapacity) mkcpDownlinkCapacity = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -147,10 +180,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("readBufferSize")
-                    subtitleText: qsTr("Default: %1 MiB").arg(XrayConfigModel.mkcpDefaultReadBufferSize())
+                    subtitleText: qsTr("≥ 1, default %1 MB").arg(XrayConfigModel.mkcpDefaultReadBufferSize())
                     textField.text: mkcpReadBufferSize
+                    textField.maximumLength: 10
+                    textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== mkcpReadBufferSize)
                     textField.onEditingFinished: {
-                        if (textField.text !== mkcpReadBufferSize) mkcpReadBufferSize = textField.text
+                        var v = root.clampInt(textField.text, 1, 2147483647)
+                        if (v !== mkcpReadBufferSize) mkcpReadBufferSize = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -160,10 +199,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("writeBufferSize")
-                    subtitleText: qsTr("Default: %1 MiB").arg(XrayConfigModel.mkcpDefaultWriteBufferSize())
+                    subtitleText: qsTr("≥ 1, default %1 MB").arg(XrayConfigModel.mkcpDefaultWriteBufferSize())
                     textField.text: mkcpWriteBufferSize
+                    textField.maximumLength: 10
+                    textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== mkcpWriteBufferSize)
                     textField.onEditingFinished: {
-                        if (textField.text !== mkcpWriteBufferSize) mkcpWriteBufferSize = textField.text
+                        var v = root.clampInt(textField.text, 1, 2147483647)
+                        if (v !== mkcpWriteBufferSize) mkcpWriteBufferSize = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -187,6 +232,7 @@ PageType {
 
                 DropDownType {
                     id: modeDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 16
                     Layout.leftMargin: 16
@@ -239,31 +285,46 @@ PageType {
                 }
 
                 TextFieldWithHeaderType {
+                    id: hostField
                     Layout.fillWidth: true
                     Layout.leftMargin: 16
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("Host")
                     textField.text: xhttpHost
+                    textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9._:,-]*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== xhttpHost)
                     textField.onEditingFinished: {
-                        if (textField.text !== xhttpHost) xhttpHost = textField.text
+                        var v = textField.text.trim()
+                        if (v !== xhttpHost) xhttpHost = v
+                        else if (textField.text !== v) textField.text = v
+                        hostField.errorText = XrayConfigModel.isValidHost(v) ? "" : qsTr("Enter a valid IP address or domain name")
+                        root.editDirty = false
                     }
                 }
 
                 TextFieldWithHeaderType {
+                    id: pathField
                     Layout.fillWidth: true
                     Layout.leftMargin: 16
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("Path")
                     textField.text: xhttpPath
+                    textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9\-._~:\/?#\[\]@!$&'()*+,;=%]*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== xhttpPath)
                     textField.onEditingFinished: {
-                        if (textField.text !== xhttpPath) xhttpPath = textField.text
+                        var v = textField.text.trim()
+                        if (v !== xhttpPath) xhttpPath = v
+                        else if (textField.text !== v) textField.text = v
+                        pathField.errorText = XrayConfigModel.isValidPath(v) ? "" : qsTr("Path must start with \"/\"")
+                        root.editDirty = false
                     }
                 }
 
                 DropDownType {
                     id: headersDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 8
                     Layout.leftMargin: 16
@@ -307,6 +368,7 @@ PageType {
 
                 DropDownType {
                     id: uplinkMethodDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 8
                     Layout.leftMargin: 16
@@ -386,6 +448,7 @@ PageType {
 
                 DropDownType {
                     id: sessionPlacementDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 8
                     Layout.leftMargin: 16
@@ -429,6 +492,7 @@ PageType {
 
                 DropDownType {
                     id: sessionKeyDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 8
                     Layout.leftMargin: 16
@@ -472,6 +536,7 @@ PageType {
 
                 DropDownType {
                     id: seqPlacementDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 8
                     Layout.leftMargin: 16
@@ -520,13 +585,19 @@ PageType {
                     Layout.topMargin: 8
                     headerText: qsTr("SeqKey")
                     textField.text: xhttpSeqKey
+                    textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9_-]*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== xhttpSeqKey)
                     textField.onEditingFinished: {
-                        if (textField.text !== xhttpSeqKey) xhttpSeqKey = textField.text
+                        var v = textField.text.trim()
+                        if (v !== xhttpSeqKey) xhttpSeqKey = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
                 DropDownType {
                     id: uplinkDataPlacementDropDown
+                    fitContent: true
                     Layout.fillWidth: true
                     Layout.topMargin: 8
                     Layout.leftMargin: 16
@@ -575,8 +646,13 @@ PageType {
                     Layout.topMargin: 8
                     headerText: qsTr("UplinkDataKey")
                     textField.text: xhttpUplinkDataKey
+                    textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9_-]*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== xhttpUplinkDataKey)
                     textField.onEditingFinished: {
-                        if (textField.text !== xhttpUplinkDataKey) xhttpUplinkDataKey = textField.text
+                        var v = textField.text.trim()
+                        if (v !== xhttpUplinkDataKey) xhttpUplinkDataKey = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -597,12 +673,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("UplinkChunkSize")
+                    subtitleText: qsTr("≥ 0 (0 = off)")
                     textField.text: xhttpUplinkChunkSize
-                    textField.validator: IntValidator {
-                        bottom: 0
-                    }
+                    textField.maximumLength: 10
+                    textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== xhttpUplinkChunkSize)
                     textField.onEditingFinished: {
-                        if (textField.text !== xhttpUplinkChunkSize) xhttpUplinkChunkSize = textField.text
+                        var v = root.clampInt(textField.text, 0, 2147483647)
+                        if (v !== xhttpUplinkChunkSize) xhttpUplinkChunkSize = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -612,9 +692,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 8
                     headerText: qsTr("scMaxBufferedPosts")
+                    subtitleText: qsTr("≥ 0")
                     textField.text: xhttpScMaxBufferedPosts
+                    textField.maximumLength: 10
+                    textField.validator: RegularExpressionValidator { regularExpression: /^\d*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== xhttpScMaxBufferedPosts)
                     textField.onEditingFinished: {
-                        if (textField.text !== xhttpScMaxBufferedPosts) xhttpScMaxBufferedPosts = textField.text
+                        var v = root.clampInt(textField.text, 0, 2147483647)
+                        if (v !== xhttpScMaxBufferedPosts) xhttpScMaxBufferedPosts = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
 
@@ -633,8 +720,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xhttpScMaxEachPostBytesMin
                     maxValue: xhttpScMaxEachPostBytesMax
-                    onMinChanged: xhttpScMaxEachPostBytesMin = val
-                    onMaxChanged: xhttpScMaxEachPostBytesMax = val
+                    onMinChanged: function(val) { xhttpScMaxEachPostBytesMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xhttpScMaxEachPostBytesMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 CaptionTextType {
@@ -652,8 +740,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xhttpScStreamUpServerSecsMin
                     maxValue: xhttpScStreamUpServerSecsMax
-                    onMinChanged: xhttpScStreamUpServerSecsMin = val
-                    onMaxChanged: xhttpScStreamUpServerSecsMax = val
+                    onMinChanged: function(val) { xhttpScStreamUpServerSecsMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xhttpScStreamUpServerSecsMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 CaptionTextType {
@@ -671,8 +760,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xhttpScMinPostsIntervalMsMin
                     maxValue: xhttpScMinPostsIntervalMsMax
-                    onMinChanged: xhttpScMinPostsIntervalMsMin = val
-                    onMaxChanged: xhttpScMinPostsIntervalMsMax = val
+                    onMinChanged: function(val) { xhttpScMinPostsIntervalMsMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xhttpScMinPostsIntervalMsMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 // ── Padding and multiplexing ──────────────────────────
@@ -728,10 +818,15 @@ PageType {
         anchors.rightMargin: 16
         anchors.bottomMargin: 16 + PageController.safeAreaBottomMargin
 
-        visible: listView.enabled && XrayConfigModel.hasUnsavedChanges
+        visible: listView.enabled && (XrayConfigModel.hasUnsavedChanges || root.editDirty)
         enabled: visible
         text: qsTr("Save")
         clickedFunc: function () {
+            var errs = XrayConfigModel.validationErrors()
+            if (errs.length > 0) {
+                PageController.showErrorMessage(errs.join("\n"))
+                return
+            }
             var headerText = qsTr("Save settings?")
             var descriptionText = qsTr("All users with whom you shared a connection with will no longer be able to connect to it.")
             var yesButtonText = qsTr("Continue")

client/ui/qml/Pages2/PageProtocolXrayXPaddingBytesSettings.qml

@@ -15,6 +15,8 @@ import "../Components"
 PageType {
     id: root
 
+    property bool editDirty: false
+
     BackButtonType {
         id: backButton
         anchors.top: parent.top
@@ -61,8 +63,9 @@ PageType {
                 Layout.rightMargin: 16
                 minValue: xPaddingBytesMin
                 maxValue: xPaddingBytesMax
-                onMinChanged: xPaddingBytesMin = val
-                onMaxChanged: xPaddingBytesMax = val
+                onMinChanged: function(val) { xPaddingBytesMin = val; root.editDirty = false }
+                onMaxChanged: function(val) { xPaddingBytesMax = val; root.editDirty = false }
+                onEdited: root.editDirty = true
             }
 
             Item {
@@ -81,7 +84,7 @@ PageType {
         anchors.rightMargin: 16
         anchors.bottomMargin: 16 + PageController.safeAreaBottomMargin
 
-        visible: listView.enabled && XrayConfigModel.hasUnsavedChanges
+        visible: listView.enabled && (XrayConfigModel.hasUnsavedChanges || root.editDirty)
         enabled: visible
         text: qsTr("Save")
         clickedFunc: function () {

client/ui/qml/Pages2/PageProtocolXrayXPaddingSettings.qml

@@ -15,6 +15,8 @@ import "../Components"
 PageType {
     id: root
 
+    property bool editDirty: false
+
     BackButtonType {
         id: backButton
         anchors.top: parent.top
@@ -78,8 +80,13 @@ PageType {
                 Layout.topMargin: 16
                 headerText: qsTr("xPaddingKey")
                 textField.text: xPaddingKey
+                textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9_-]*$/ }
+                textField.onTextEdited: root.editDirty = (textField.text !== xPaddingKey)
                 textField.onEditingFinished: {
-                    if (textField.text !== xPaddingKey) xPaddingKey = textField.text
+                    var v = textField.text.trim()
+                    if (v !== xPaddingKey) xPaddingKey = v
+                    else if (textField.text !== v) textField.text = v
+                    root.editDirty = false
                 }
             }
 
@@ -90,13 +97,19 @@ PageType {
                 Layout.topMargin: 8
                 headerText: qsTr("xPaddingHeader")
                 textField.text: xPaddingHeader
+                textField.validator: RegularExpressionValidator { regularExpression: /^[A-Za-z0-9_-]*$/ }
+                textField.onTextEdited: root.editDirty = (textField.text !== xPaddingHeader)
                 textField.onEditingFinished: {
-                    if (textField.text !== xPaddingHeader) xPaddingHeader = textField.text
+                    var v = textField.text.trim()
+                    if (v !== xPaddingHeader) xPaddingHeader = v
+                    else if (textField.text !== v) textField.text = v
+                    root.editDirty = false
                 }
             }
 
             DropDownType {
                 id: placementDropDown
+                fitContent: true
                 Layout.fillWidth: true
                 Layout.topMargin: 8
                 Layout.leftMargin: 16
@@ -140,6 +153,7 @@ PageType {
 
             DropDownType {
                 id: methodDropDown
+                fitContent: true
                 Layout.fillWidth: true
                 Layout.topMargin: 8
                 Layout.leftMargin: 16
@@ -197,7 +211,7 @@ PageType {
         anchors.rightMargin: 16
         anchors.bottomMargin: 16 + PageController.safeAreaBottomMargin
 
-        visible: listView.enabled && XrayConfigModel.hasUnsavedChanges
+        visible: listView.enabled && (XrayConfigModel.hasUnsavedChanges || root.editDirty)
         enabled: visible
         text: qsTr("Save")
         clickedFunc: function () {

client/ui/qml/Pages2/PageProtocolXrayXmuxSettings.qml

@@ -15,6 +15,21 @@ import "../Components"
 PageType {
     id: root
 
+    property bool editDirty: false
+
+    function clampSigned(text) {
+        if (text === "" || text === "-")
+            return ""
+        var n = parseInt(text, 10)
+        if (isNaN(n))
+            return ""
+        if (n > 2147483647)
+            n = 2147483647
+        if (n < -2147483648)
+            n = -2147483648
+        return String(n)
+    }
+
     BackButtonType {
         id: backButton
         anchors.top: parent.top
@@ -78,8 +93,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xmuxMaxConcurrencyMin
                     maxValue: xmuxMaxConcurrencyMax
-                    onMinChanged: xmuxMaxConcurrencyMin = val
-                    onMaxChanged: xmuxMaxConcurrencyMax = val
+                    onMinChanged: function(val) { xmuxMaxConcurrencyMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xmuxMaxConcurrencyMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 // maxConnections
@@ -98,8 +114,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xmuxMaxConnectionsMin
                     maxValue: xmuxMaxConnectionsMax
-                    onMinChanged: xmuxMaxConnectionsMin = val
-                    onMaxChanged: xmuxMaxConnectionsMax = val
+                    onMinChanged: function(val) { xmuxMaxConnectionsMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xmuxMaxConnectionsMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 // cMaxReuseTimes
@@ -118,8 +135,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xmuxCMaxReuseTimesMin
                     maxValue: xmuxCMaxReuseTimesMax
-                    onMinChanged: xmuxCMaxReuseTimesMin = val
-                    onMaxChanged: xmuxCMaxReuseTimesMax = val
+                    onMinChanged: function(val) { xmuxCMaxReuseTimesMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xmuxCMaxReuseTimesMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 // hMaxRequestTimes
@@ -138,8 +156,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xmuxHMaxRequestTimesMin
                     maxValue: xmuxHMaxRequestTimesMax
-                    onMinChanged: xmuxHMaxRequestTimesMin = val
-                    onMaxChanged: xmuxHMaxRequestTimesMax = val
+                    onMinChanged: function(val) { xmuxHMaxRequestTimesMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xmuxHMaxRequestTimesMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 // hMaxReusableSecs
@@ -158,8 +177,9 @@ PageType {
                     Layout.rightMargin: 16
                     minValue: xmuxHMaxReusableSecsMin
                     maxValue: xmuxHMaxReusableSecsMax
-                    onMinChanged: xmuxHMaxReusableSecsMin = val
-                    onMaxChanged: xmuxHMaxReusableSecsMax = val
+                    onMinChanged: function(val) { xmuxHMaxReusableSecsMin = val; root.editDirty = false }
+                    onMaxChanged: function(val) { xmuxHMaxReusableSecsMax = val; root.editDirty = false }
+                    onEdited: root.editDirty = true
                 }
 
                 TextFieldWithHeaderType {
@@ -168,12 +188,16 @@ PageType {
                     Layout.rightMargin: 16
                     Layout.topMargin: 16
                     headerText: qsTr("hKeepAlivePeriod")
+                    subtitleText: qsTr("Integer, may be negative")
                     textField.text: xmuxHKeepAlivePeriod
-                    textField.validator: IntValidator {
-                        bottom: 0
-                    }
+                    textField.maximumLength: 11
+                    textField.validator: RegularExpressionValidator { regularExpression: /^-?\d*$/ }
+                    textField.onTextEdited: root.editDirty = (textField.text !== xmuxHKeepAlivePeriod)
                     textField.onEditingFinished: {
-                        if (textField.text !== xmuxHKeepAlivePeriod) xmuxHKeepAlivePeriod = textField.text
+                        var v = root.clampSigned(textField.text)
+                        if (v !== xmuxHKeepAlivePeriod) xmuxHKeepAlivePeriod = v
+                        else if (textField.text !== v) textField.text = v
+                        root.editDirty = false
                     }
                 }
             }
@@ -194,7 +218,7 @@ PageType {
         anchors.rightMargin: 16
         anchors.bottomMargin: 16 + PageController.safeAreaBottomMargin
 
-        visible: listView.enabled && XrayConfigModel.hasUnsavedChanges
+        visible: listView.enabled && (XrayConfigModel.hasUnsavedChanges || root.editDirty)
         enabled: visible
         text: qsTr("Save")
         clickedFunc: function () {