fix session

Tun/Punchnet/Session/Session.swift

@@ -0,0 +1,36 @@
+//
+//  Session.swift
+//  sdlan
+//  Session是增加了有效时间的
+//  Created by 安礼成 on 2025/7/14.
+//
+import Foundation
+import NIOCore
+
+struct Session {
+    enum AddressType: String, Hashable {
+        case v4
+        case v6
+    }
+
+    // 在内部的通讯的ip地址, 整数格式
+    let dstMac: Data
+    // 对端的主机在nat上映射的端口信息
+    let natAddress: SocketAddress
+    // 当前会话对应的外层地址族
+    let addressType: AddressType
+
+    // 最后使用时间
+    var lastTimestamp: Int32
+
+    init?(dstMac: Data, natAddress: SocketAddress, addressType: AddressType) {
+        self.dstMac = dstMac
+        self.natAddress = natAddress
+        self.addressType = addressType
+        self.lastTimestamp = Int32(Date().timeIntervalSince1970)
+    }
+
+    mutating func updateLastTimestamp(_ lastTimestamp: Int32) {
+        self.lastTimestamp = lastTimestamp
+    }
+}

Tun/Punchnet/Session/SessionSnapshot.swift

@@ -0,0 +1,27 @@
+//
+//  SessionSnapshot.swift
+//  Tun
+//
+//  Created by Codex on 2026/5/21.
+//
+import Foundation
+
+final class SessionSnapshot: Snapshot {
+    private let sessions: [Data: [Session.AddressType: Session]]
+
+    init(sessions: [Data: [Session.AddressType: Session]]) {
+        self.sessions = sessions
+    }
+
+    func getSession(toAddress: Data) -> Session? {
+        guard let peerSessions = self.sessions[toAddress] else {
+            return nil
+        }
+
+        return peerSessions.values.max(by: { $0.lastTimestamp < $1.lastTimestamp })
+    }
+
+    static func empty() -> SessionSnapshot {
+        return SessionSnapshot(sessions: [:])
+    }
+}

Tun/Punchnet/Session/SessionTable.swift

@@ -1,60 +1,10 @@
 //
-//  Session.swift
+//  SessionTable.swift
-//  sdlan
+//  Tun
-//  Session是增加了有效时间的
+//
-//  Created by 安礼成 on 2025/7/14.
+//  Created by Codex on 2026/5/21.
 //
 import Foundation
-import NIOCore
-import Darwin
-
-struct Session {
-    enum AddressType: String, Hashable {
-        case v4
-        case v6
-    }
-
-    // 在内部的通讯的ip地址, 整数格式
-    let dstMac: Data
-    // 对端的主机在nat上映射的端口信息
-    let natAddress: SocketAddress
-    // 当前会话对应的外层地址族
-    let addressType: AddressType
-    
-    // 最后使用时间
-    var lastTimestamp: Int32
-    
-    init?(dstMac: Data, natAddress: SocketAddress, addressType: AddressType) {
-        self.dstMac = dstMac
-        self.natAddress = natAddress
-        self.addressType = addressType
-        self.lastTimestamp = Int32(Date().timeIntervalSince1970)
-    }
-
-    mutating func updateLastTimestamp(_ lastTimestamp: Int32) {
-        self.lastTimestamp = lastTimestamp
-    }
-}
-
-final class SessionSnapshot: Snapshot {
-    private let sessions: [Data: [Session.AddressType: Session]]
-
-    init(sessions: [Data: [Session.AddressType: Session]]) {
-        self.sessions = sessions
-    }
-
-    func getSession(toAddress: Data) -> Session? {
-        guard let peerSessions = self.sessions[toAddress] else {
-            return nil
-        }
-
-        return peerSessions.values.max(by: { $0.lastTimestamp < $1.lastTimestamp })
-    }
-
-    static func empty() -> SessionSnapshot {
-        return SessionSnapshot(sessions: [:])
-    }
-}
 
 actor SessionManager {
     private var sessions: [Data: [Session.AddressType: Session]] = [:]
@@ -141,5 +91,4 @@ actor SessionManager {
         }
         return SessionSnapshot(sessions: sessions)
     }
-    
 }