diff --git a/Tun/PacketTunnelProvider.swift b/Tun/PacketTunnelProvider.swift
index 62ebb1d..950e664 100644
--- a/Tun/PacketTunnelProvider.swift
+++ b/Tun/PacketTunnelProvider.swift
@@ -28,22 +28,22 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
             return
         }
         
-        let rsaCipher = try! CCRSACipher(keySize: 1024)
-        self.runtimeEnv = SDLRuntimeEnvironment(config: config, rsaCipher: rsaCipher, provider: self)
-        Task {
-            await self.runtimeEnv?.submitCommand(command: .start(completion: { err in
-                completionHandler(err)
-            }))
+        if self.runtimeEnv == nil {
+            let rsaCipher = try! CCRSACipher(keySize: 1024)
+            self.runtimeEnv = SDLRuntimeEnvironment(config: config, rsaCipher: rsaCipher, provider: self)
+            self.runtimeEnv?.run()
         }
+        
+        self.runtimeEnv?.submitCommand(command: .start(completion: { err in
+            completionHandler(err)
+        }))
     }
 
     override func stopTunnel(with reason: NEProviderStopReason, completionHandler: @escaping () -> Void) {
         // Add code here to start the process of stopping the tunnel.
-        Task {
-            await self.runtimeEnv?.submitCommand(command: .stop(completion: {
-                completionHandler()
-            }))
-        }
+        self.runtimeEnv?.submitCommand(command: .stop(completion: {
+            completionHandler()
+        }))
     }
 
     override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)?) {
@@ -66,27 +66,23 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
 
     override func sleep(completionHandler: @escaping () -> Void) {
         // Add code here to get ready to sleep.
-        Task {
-            await self.runtimeEnv?.submitCommand(command: .stop(completion: {
-                SDLLogger.log("[PacketTunnelProvider] sleep")
-            }))
-        }
+        self.runtimeEnv?.submitCommand(command: .stop(completion: {
+            SDLLogger.log("[PacketTunnelProvider] sleep")
+        }))
         completionHandler()
     }
 
     override func wake() {
         SDLLogger.log("[PacketTunnelProvider] wake up!!!!!!!")
         // Add code here to wake up.
-        Task {
-            // 重新启动
-            await self.runtimeEnv?.submitCommand(command: .start(completion: { err in
-                SDLLogger.log("[PacketTunnelProvider] wakeup and try start")
-            }))
-        }
+        // 重新启动
+        self.runtimeEnv?.submitCommand(command: .start(completion: { err in
+            SDLLogger.log("[PacketTunnelProvider] wakeup and try start")
+        }))
     }
 
     private func handleAppRequest(message: AppRequest) async throws -> Data? {
-        guard let contextActor = await self.runtimeEnv?.getContextActor() else {
+        guard let contextActor = self.runtimeEnv?.getContextActor() else {
             throw TunnelError.invalidContext
         }
         
diff --git a/Tun/Punchnet/Actors/SDLContextActor.swift b/Tun/Punchnet/Actors/SDLContextActor.swift
index 346b2e3..f9cbd04 100644
--- a/Tun/Punchnet/Actors/SDLContextActor.swift
+++ b/Tun/Punchnet/Actors/SDLContextActor.swift
@@ -34,7 +34,7 @@ actor SDLContextActor {
         }
     }
     
-    var config: SDLConfiguration
+    private var config: SDLConfiguration
     // nat的网络类型
     var natType: SDLNATProberActor.NatType = .blocked
     
@@ -119,13 +119,7 @@ actor SDLContextActor {
     }
     
     public func start() async {
-        await self.startRuntime(resetNotifier: true)
-    }
-    
-    private func startRuntime(resetNotifier: Bool) async {
-        if resetNotifier {
-            self.prepareTunnelNotifier()
-        }
+        self.prepareTunnelNotifier()
         
         // 启动arp的定时清理任务
         await self.puncherActor.start()
diff --git a/Tun/SDLRuntimeEnvironment.swift b/Tun/SDLRuntimeEnvironment.swift
index 4762c1f..74e476d 100644
--- a/Tun/SDLRuntimeEnvironment.swift
+++ b/Tun/SDLRuntimeEnvironment.swift
@@ -5,12 +5,12 @@ enum SDLRuntimeEnvironmentCommand {
     case stop(completion: @Sendable () -> Void)
 }
 
-actor SDLRuntimeEnvironment {
+final class SDLRuntimeEnvironment {
     private enum State {
         case idle
         case running
     }
-
+    
     private var state: State = .idle
     private var contextActor: SDLContextActor?
 
@@ -104,14 +104,9 @@ actor SDLRuntimeEnvironment {
         }
     }
 
-    func shutdown() {
+    deinit {
         self.commandCont.finish()
         self.commandTask?.cancel()
         self.commandTask = nil
     }
-
-    deinit {
-        self.commandCont.finish()
-        self.commandTask?.cancel()
-    }
 }