add supervisor

Tun/Punchnet/Actors/SDLContextActor.swift

@@ -19,10 +19,9 @@ actor SDLContextActor {
         case registered
     }
     
-    nonisolated let config: SDLConfiguration
-
     private var state: State = .unregistered
 
+    nonisolated let config: SDLConfiguration
     // nat的网络类型
     var natType: SDLNATProberActor.NatType = .blocked
     
@@ -70,7 +69,8 @@ actor SDLContextActor {
     nonisolated private let flowTracer = SDLFlowTracer()
     
     // 处理内部的需要长时间运行的任务
-    private var loopChildWorkers: [Task<Void, Never>] = []
+    private var supervisor = SDLSupervisor()
+    
     private let provider: NEPacketTunnelProvider
     
     // 处理权限控制
@@ -102,37 +102,37 @@ actor SDLContextActor {
         self.snapshotPublisher = snapshotPublisher
     }
     
-    public func start() {
+    public func start() async {
         self.startMonitor()
         
-        self.loopChildWorkers.append(spawnLoop {
+        await self.supervisor.addWorker(name: "quicClient") {
             SDLLogger.shared.log("[SDLContext] try start quicClient")
             let quicClient = try await self.startQUICClient()
             SDLLogger.shared.log("[SDLContext] quicClient running!!!!")
             await quicClient.waitClose()
             SDLLogger.shared.log("[SDLContext] quicClient closed!!!!")
-        })
+        }
         
-        self.loopChildWorkers.append(spawnLoop {
+        await self.supervisor.addWorker(name: "noticeClient") {
             let noticeClient = try self.startNoticeClient()
             SDLLogger.shared.log("[SDLContext] noticeClient running!!!!")
             try await noticeClient.waitClose()
             SDLLogger.shared.log("[SDLContext] noticeClient closed!!!!")
-        })
+        }
         
-        self.loopChildWorkers.append(spawnLoop {
+        await self.supervisor.addWorker(name: "dnsClient") {
             let dnsClient = try await self.startDnsClient()
             SDLLogger.shared.log("[SDLContext] dns running!!!!")
             try await dnsClient.waitClose()
             SDLLogger.shared.log("[SDLContext] dns closed!!!!")
-        })
+        }
         
-        self.loopChildWorkers.append(spawnLoop {
+        await self.supervisor.addWorker(name: "udpHole") {
             let udpHole = try await self.startUDPHole()
             SDLLogger.shared.log("[SDLContext] udp running!!!!")
             try await udpHole.waitClose()
             SDLLogger.shared.log("[SDLContext] udp closed!!!!")
-        })
+        }
     }
     
     private func startQUICClient() async throws -> SDLQUICClient {
@@ -305,8 +305,7 @@ actor SDLContextActor {
     
     // 处理context的停止问题
     public func stop() async {
-        self.loopChildWorkers.forEach { $0.cancel() }
-        self.loopChildWorkers.removeAll()
+        await self.supervisor.stop()
         
         self.udpHoleWorkers?.forEach { $0.cancel() }
         self.udpHoleWorkers = nil

Tun/Punchnet/Actors/SDLSupervisor.swift

@@ -0,0 +1,32 @@
+//
+//  SDLSupervisor.swift
+//  punchnet
+//
+//  Created by 安礼成 on 2026/3/10.
+//
+
+actor SDLSupervisor {
+    private var loopChildWorkers: [Task<Void, Never>] = []
+    
+    func addWorker(name: String, _ body: @escaping () async throws -> Void, retryDelay: Duration = .seconds(2)) {
+        let worker = Task(name: name) {
+            while !Task.isCancelled {
+                do {
+                    try await body()
+                } catch is CancellationError {
+                    break
+                } catch let err {
+                    SDLLogger.shared.log("[Supervisor] worker \(name) crashed: \(err.localizedDescription)")
+                    try? await Task.sleep(for: retryDelay)
+                }
+            }
+        }
+        self.loopChildWorkers.append(worker)
+    }
+    
+    func stop() {
+        self.loopChildWorkers.forEach { $0.cancel() }
+        self.loopChildWorkers.removeAll()
+    }
+    
+}