diff --git a/Tun/Punchnet/Actors/SDLQuicClient.swift b/Tun/Punchnet/Actors/SDLQuicClient.swift
index 4068542..a15641f 100644
--- a/Tun/Punchnet/Actors/SDLQuicClient.swift
+++ b/Tun/Punchnet/Actors/SDLQuicClient.swift
@@ -25,12 +25,6 @@ final class SDLQUICClient {
     private let (closeStream, closeCont) = AsyncStream.makeStream(of: Void.self)
     private let (readyStream, readyCont) = AsyncStream.makeStream(of: Void.self)
 
-    enum Event {
-        case ready
-        case failed(Error)
-        case cancelled
-    }
-
     init(host: String, port: UInt16) {
         let options = NWProtocolQUIC.Options(alpn: ["punchnet/1.0"])
         
@@ -41,7 +35,7 @@ final class SDLQUICClient {
                 // 你可以自己决定是否信任
                 complete(true)   // true = 接受证书
             },
-            DispatchQueue.global()
+            self.queue
         )
         
         let params = NWParameters(quic: options)
@@ -49,7 +43,6 @@ final class SDLQUICClient {
     }
 
     func start() {
-        SDLLogger.shared.log("[SDLQUICTransport] call start")
         connection.stateUpdateHandler = { state in
             SDLLogger.shared.log("[SDLQUICTransport] new state: \(state)")
             switch state {
@@ -80,7 +73,11 @@ final class SDLQUICClient {
         packet.append(type.rawValue)
         packet.append(data)
         
-        connection.send(content: packet, completion: .contentProcessed { _ in })
+        connection.send(content: packet, completion: .contentProcessed { error in
+            if let error {
+                SDLLogger.shared.log("[SDLQUICClient] send data get error: \(error)")
+            }
+        })
     }
     
     func waitReady() async throws {
@@ -123,7 +120,7 @@ actor SDLQUICReader {
             do {
                 while !Task.isCancelled {
                     let (isComplete, data) = try await self.readOnce()
-                    if !data.isEmpty {
+                    if let data, !data.isEmpty {
                         buffer.writeBytes(data)
                         let frames = try parseFrames(buffer: &buffer)
                         for frame in frames {
@@ -178,20 +175,14 @@ actor SDLQUICReader {
     }
     
     // 读取一次数据
-    private func readOnce() async throws -> (Bool, Data) {
+    private func readOnce() async throws -> (Bool, Data?) {
         return try await withCheckedThrowingContinuation { cont in
             connection.receive(minimumIncompleteLength: 1, maximumLength: maxPacketSize) { data, _, isComplete, error in
                 if let error {
                     cont.resume(throwing: error)
                     return
                 }
-                
-                if let data, !data.isEmpty {
-                    SDLLogger.shared.log("[SDLQUICTransport] read bytes: \(data.count)")
-                    cont.resume(returning: (isComplete, data))
-                } else {
-                    cont.resume(returning: (isComplete, Data()))
-                }
+                cont.resume(returning: (isComplete, data))
             }
         }
     }