fix

Tun/Punchnet/SDLMessage.pb.swift

@@ -51,14 +51,25 @@ struct SDLV6Info: @unchecked Sendable {
   init() {}
 }
 
-/// 客户端层面通过token或者账号密码登录, 服务器端不管这个，
-/// 只是验证凭证是否合法 (access_token)
+struct SDLEmpty: Sendable {
+  // SwiftProtobuf.Message conformance is added in an extension below. See the
+  // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
+  // methods supported on all messages.
+
+  var pktID: UInt32 = 0
+
+  var unknownFields = SwiftProtobuf.UnknownStorage()
+
+  init() {}
+}
+
 /// 这里修改成了扁平的结构, 否则有些字段不好找放的位置
 struct SDLRegisterSuper: @unchecked Sendable {
   // SwiftProtobuf.Message conformance is added in an extension below. See the
   // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
   // methods supported on all messages.
 
+  /// 所有需要建立请求和响应对应关系的，都是通过4字节的pktId来对应
   var pktID: UInt32 = 0
 
   var clientID: String = String()
@@ -75,6 +86,8 @@ struct SDLRegisterSuper: @unchecked Sendable {
 
   var pubKey: String = String()
 
+  /// 客户端使用http协议请求后端，通过token或者账号密码登录时, 统一返回一个access_token;
+  /// RegisterSuper的时候，验证凭证是否合法 (access_token)
   var accessToken: String = String()
 
   var unknownFields = SwiftProtobuf.UnknownStorage()
@@ -82,7 +95,6 @@ struct SDLRegisterSuper: @unchecked Sendable {
   init() {}
 }
 
-/// 这里修改成了udp的方式，后续需要验证: session_token
 struct SDLRegisterSuperAck: @unchecked Sendable {
   // SwiftProtobuf.Message conformance is added in an extension below. See the
   // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
@@ -92,6 +104,8 @@ struct SDLRegisterSuperAck: @unchecked Sendable {
 
   var aesKey: Data = Data()
 
+  /// 验证通过后，返回session_token; 后续通讯的合法行需哟啊通过session_token来保证
+  /// 在SDLQueryInfo，SDLStunRequest, SDLData, SDLArpRequest等需要服务器端介入的地方都增加了session_token的验证(端和端之间的SDLData不需要校验)
   var sessionToken: Data = Data()
 
   var unknownFields = SwiftProtobuf.UnknownStorage()
@@ -207,6 +221,7 @@ struct SDLNatChangedEvent: @unchecked Sendable {
 }
 
 /// 被清理掉的Endpoints
+/// 协议改成udp后，服务端只能通过定时器来集中清理掉线的端（通过心跳机制SDLStunRequest）
 struct SDLDropMacsEvent: @unchecked Sendable {
   // SwiftProtobuf.Message conformance is added in an extension below. See the
   // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
@@ -222,6 +237,7 @@ struct SDLDropMacsEvent: @unchecked Sendable {
 }
 
 /// 通知端上必须重新校验
+/// 服务器端认为端已经掉线了，但是这个时候还在向服务端发送消息；服务端要求端上重新校验(SDLRegisterSuper)
 struct SDLRefreshAuthEvent: Sendable {
   // SwiftProtobuf.Message conformance is added in an extension below. See the
   // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
@@ -332,6 +348,8 @@ struct SDLData: @unchecked Sendable {
 
   var sessionToken: Data = Data()
 
+  /// 端通过https登录的时候，服务端会分配该端对应的权限标识
+  /// 后续的请求过程中需要带上这个值，对端通过这个值要判断对数据包是否放行
   var identityID: UInt32 = 0
 
   var unknownFields = SwiftProtobuf.UnknownStorage()
@@ -405,6 +423,8 @@ struct SDLStunProbeReply: Sendable {
   init() {}
 }
 
+/// ARP查询相关
+/// 真实的arp请求是通过广播的形式获取到的，但是针对于macos这种tun的实现；是能够分析出arp请求包的；对于当前网络来说，服务端是知道mac对应的ip地址的，因此没有必要广播；直接通过服务器端返回
 struct SDLArpRequest: @unchecked Sendable {
   // SwiftProtobuf.Message conformance is added in an extension below. See the
   // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
@@ -521,6 +541,38 @@ extension SDLV6Info: SwiftProtobuf.Message, SwiftProtobuf._MessageImplementation
   }
 }
 
+extension SDLEmpty: SwiftProtobuf.Message, SwiftProtobuf._MessageImplementationBase, SwiftProtobuf._ProtoNameProviding {
+  static let protoMessageName: String = "SDLEmpty"
+  static let _protobuf_nameMap: SwiftProtobuf._NameMap = [
+    1: .standard(proto: "pkt_id"),
+  ]
+
+  mutating func decodeMessage<D: SwiftProtobuf.Decoder>(decoder: inout D) throws {
+    while let fieldNumber = try decoder.nextFieldNumber() {
+      // The use of inline closures is to circumvent an issue where the compiler
+      // allocates stack space for every case branch when no optimizations are
+      // enabled. https://github.com/apple/swift-protobuf/issues/1034
+      switch fieldNumber {
+      case 1: try { try decoder.decodeSingularUInt32Field(value: &self.pktID) }()
+      default: break
+      }
+    }
+  }
+
+  func traverse<V: SwiftProtobuf.Visitor>(visitor: inout V) throws {
+    if self.pktID != 0 {
+      try visitor.visitSingularUInt32Field(value: self.pktID, fieldNumber: 1)
+    }
+    try unknownFields.traverse(visitor: &visitor)
+  }
+
+  static func ==(lhs: SDLEmpty, rhs: SDLEmpty) -> Bool {
+    if lhs.pktID != rhs.pktID {return false}
+    if lhs.unknownFields != rhs.unknownFields {return false}
+    return true
+  }
+}
+
 extension SDLRegisterSuper: SwiftProtobuf.Message, SwiftProtobuf._MessageImplementationBase, SwiftProtobuf._ProtoNameProviding {
   static let protoMessageName: String = "SDLRegisterSuper"
   static let _protobuf_nameMap: SwiftProtobuf._NameMap = [

Tun/Punchnet/SDLTunnelProviderAdapter.swift

@@ -50,7 +50,7 @@ final class SDLTunnelProviderAdapter {
         
         // Add code here to start the process of connecting the tunnel.
         let networkSettings = NEPacketTunnelNetworkSettings(tunnelRemoteAddress: "8.8.8.8")
-        networkSettings.mtu = 1460
+        networkSettings.mtu = 1250
         
         // 设置网卡的DNS解析