From 04e0144004cc34fbd8d3754a15d5edc1e17a4453 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 3 Nov 2025 21:23:55 +0000
Subject: [PATCH] Preserve exception stack trace using ExceptionDispatchInfo

Co-authored-by: Kvarkas <3611964+Kvarkas@users.noreply.github.com>
---
 .../Connection/Protocol/VNC/Connection.Protocol.VNC.cs     | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/mRemoteNG/Connection/Protocol/VNC/Connection.Protocol.VNC.cs b/mRemoteNG/Connection/Protocol/VNC/Connection.Protocol.VNC.cs
index 1c05686b6..37ea2b7b2 100644
--- a/mRemoteNG/Connection/Protocol/VNC/Connection.Protocol.VNC.cs
+++ b/mRemoteNG/Connection/Protocol/VNC/Connection.Protocol.VNC.cs
@@ -8,6 +8,7 @@ using mRemoteNG.UI.Forms;
 using mRemoteNG.Resources.Language;
 using System.Runtime.Versioning;
 using mRemoteNG.Security;
+using System.Runtime.ExceptionServices;
 
 // ReSharper disable ArrangeAccessorOwnerBody
 
@@ -22,7 +23,7 @@ namespace mRemoteNG.Connection.Protocol.VNC
         private VncSharpCore.RemoteDesktop _vnc;
         private ConnectionInfo _info;
         private static bool _isConnectionSuccessful;
-        private static Exception _socketexception;
+        private static ExceptionDispatchInfo _socketexception;
         private static readonly ManualResetEvent TimeoutObject = new(false);
         private static readonly object _testConnectLock = new();
 
@@ -176,7 +177,7 @@ namespace mRemoteNG.Connection.Protocol.VNC
                     // Connection completed but failed - tcpclient will be closed in CallBackMethod's finally block
                     if (_socketexception != null)
                     {
-                        throw _socketexception;
+                        _socketexception.Throw();
                     }
                 }
                 else
@@ -205,7 +206,7 @@ namespace mRemoteNG.Connection.Protocol.VNC
             catch (Exception ex)
             {
                 _isConnectionSuccessful = false;
-                _socketexception = ex;
+                _socketexception = ExceptionDispatchInfo.Capture(ex);
             }
             finally
             {