In tun mode, do a delay check and restart the core

v2rayN/v2rayN/Handler/CoreHandler.cs

@@ -1,5 +1,6 @@
 using System.Diagnostics;
 using System.IO;
+using System.Reactive.Linq;
 using System.Text;
 using v2rayN.Mode;
 using v2rayN.Resx;
@@ -45,6 +46,25 @@ namespace v2rayN.Handler
                 ShowMsg(true, $"{node.GetSummary()}");
                 CoreStop();
                 CoreStart(node);
+
+                //In tun mode, do a delay check and restart the core
+                if (_config.tunModeItem.enableTun)
+                {
+                    Observable.Range(1, 1)
+                    .Delay(TimeSpan.FromSeconds(15))
+                    .Subscribe(x =>
+                    {
+                        {
+                            if (_process == null || _process.HasExited)
+                            {
+                                CoreStart(node);
+                                ShowMsg(false, "Tun mode restart the core once");
+                                Utils.SaveLog("Tun mode restart the core once");
+                            }
+                        }
+
+                    });
+                }
             }
         }