diff --git a/v2rayN/ServiceLib/Services/SpeedtestService.cs b/v2rayN/ServiceLib/Services/SpeedtestService.cs
index 00f54427..4389702a 100644
--- a/v2rayN/ServiceLib/Services/SpeedtestService.cs
+++ b/v2rayN/ServiceLib/Services/SpeedtestService.cs
@@ -335,15 +335,14 @@ public class SpeedtestService(Config config, Func<SpeedTestResult, Task> updateF
             using Socket clientSocket = new(endPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
 
             var timer = Stopwatch.StartNew();
-            var result = clientSocket.BeginConnect(endPoint, null, null);
-            if (!result.AsyncWaitHandle.WaitOne(TimeSpan.FromSeconds(5)))
-            {
-                throw new TimeoutException("connect timeout (5s): " + url);
-            }
+            using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(5));
+            await clientSocket.ConnectAsync(endPoint, cts.Token).ConfigureAwait(false);
             timer.Stop();
             responseTime = (int)timer.Elapsed.TotalMilliseconds;
-
-            clientSocket.EndConnect(result);
+        }
+        catch (OperationCanceledException)
+        {
+            // 超时情况，responseTime保持为-1
         }
         catch (Exception ex)
         {