use Task.Delay instead of Thread.Sleep

v2rayN/PacLib/PacHandler.cs

@@ -2,7 +2,6 @@
 using System.IO;
 using System.Net.Sockets;
 using System.Text;
-using System.Threading;
 using System.Threading.Tasks;
 
 namespace PacLib;
@@ -50,7 +49,7 @@ public class PacHandler
         _tcpListener = TcpListener.Create(_pacPort);
         _isRunning = true;
         _tcpListener.Start();
-        Task.Factory.StartNew(() =>
+        Task.Factory.StartNew(async () =>
         {
             while (_isRunning)
             {
@@ -58,12 +57,12 @@ public class PacHandler
                 {
                     if (!_tcpListener.Pending())
                     {
-                        Thread.Sleep(10);
+                        await Task.Delay(10);
                         continue;
                     }
 
                     var client = _tcpListener.AcceptTcpClient();
-                    Task.Run(() =>
+                    await Task.Run(() =>
                       {
                           var stream = client.GetStream();
                           var sb = new StringBuilder();