Fix wg reconnection problem after awg connection (#696)

* Update Android AWG to 0.2.5

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.25.0 FATAL_ERROR)
 
 set(PROJECT AmneziaVPN)
 
-project(${PROJECT} VERSION 4.4.1.3
+project(${PROJECT} VERSION 4.4.1.4
         DESCRIPTION "AmneziaVPN"
         HOMEPAGE_URL "https://amnezia.org/"
 )
@@ -11,7 +11,7 @@ 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 48)
+set(APP_ANDROID_VERSION_CODE 49)
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
     set(MZ_PLATFORM_NAME "linux")

client/android/wireguard/src/main/kotlin/GoBackend.kt

@@ -1,10 +0,0 @@
-package org.amnezia.vpn.protocol.wireguard
-
-object GoBackend {
-    external fun wgGetConfig(handle: Int): String?
-    external fun wgGetSocketV4(handle: Int): Int
-    external fun wgGetSocketV6(handle: Int): Int
-    external fun wgTurnOff(handle: Int)
-    external fun wgTurnOn(ifName: String, tunFd: Int, settings: String): Int
-    external fun wgVersion(): String
-}

client/android/wireguard/src/main/kotlin/org/amnezia/awg/GoBackend.kt

@@ -0,0 +1,10 @@
+package org.amnezia.awg
+
+object GoBackend {
+    external fun awgGetConfig(handle: Int): String?
+    external fun awgGetSocketV4(handle: Int): Int
+    external fun awgGetSocketV6(handle: Int): Int
+    external fun awgTurnOff(handle: Int)
+    external fun awgTurnOn(ifName: String, tunFd: Int, settings: String): Int
+    external fun awgVersion(): String
+}

client/android/wireguard/src/main/kotlin/org/amnezia/vpn/protocol/wireguard/Wireguard.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import android.net.VpnService.Builder
 import java.util.TreeMap
 import kotlinx.coroutines.flow.MutableStateFlow
+import org.amnezia.awg.GoBackend
 import org.amnezia.vpn.protocol.Protocol
 import org.amnezia.vpn.protocol.ProtocolState
 import org.amnezia.vpn.protocol.ProtocolState.CONNECTED
@@ -61,7 +62,7 @@ open class Wireguard : Protocol() {
     override val statistics: Statistics
         get() {
             if (tunnelHandle == -1) return Statistics.EMPTY_STATISTICS
-            val config = GoBackend.wgGetConfig(tunnelHandle) ?: return Statistics.EMPTY_STATISTICS
+            val config = GoBackend.awgGetConfig(tunnelHandle) ?: return Statistics.EMPTY_STATISTICS
             return Statistics.build {
                 var optsCount = 0
                 config.splitToSequence("\n").forEach { line ->
@@ -156,8 +157,8 @@ open class Wireguard : Protocol() {
             if (tunFd == null) {
                 throw VpnStartException("Create VPN interface: permission not granted or revoked")
             }
-            Log.v(TAG, "Wg-go backend ${GoBackend.wgVersion()}")
-            tunnelHandle = GoBackend.wgTurnOn(ifName, tunFd.detachFd(), config.toWgUserspaceString())
+            Log.v(TAG, "Wg-go backend ${GoBackend.awgVersion()}")
+            tunnelHandle = GoBackend.awgTurnOn(ifName, tunFd.detachFd(), config.toWgUserspaceString())
         }
 
         if (tunnelHandle < 0) {
@@ -165,8 +166,8 @@ open class Wireguard : Protocol() {
             throw VpnStartException("Wireguard tunnel creation error")
         }
 
-        if (!protect(GoBackend.wgGetSocketV4(tunnelHandle)) || !protect(GoBackend.wgGetSocketV6(tunnelHandle))) {
-            GoBackend.wgTurnOff(tunnelHandle)
+        if (!protect(GoBackend.awgGetSocketV4(tunnelHandle)) || !protect(GoBackend.awgGetSocketV6(tunnelHandle))) {
+            GoBackend.awgTurnOff(tunnelHandle)
             tunnelHandle = -1
             throw VpnStartException("Protect VPN interface: permission not granted or revoked")
         }
@@ -179,7 +180,7 @@ open class Wireguard : Protocol() {
         }
         val handleToClose = tunnelHandle
         tunnelHandle = -1
-        GoBackend.wgTurnOff(handleToClose)
+        GoBackend.awgTurnOff(handleToClose)
         state.value = DISCONNECTED
     }