Release/v2.1.3

Directory.Build.props

@@ -1,9 +1,9 @@
 <Project>
     <PropertyGroup>
         <!-- Keep in sync with WS4WSetupScript.iss and VersionInfo.xml -->
-        <AssemblyVersion>2.1.2.0</AssemblyVersion>
-        <FileVersion>2.1.2.0</FileVersion>
-        <InformationalVersion>2.1.2.0</InformationalVersion>
+        <AssemblyVersion>2.1.3.0</AssemblyVersion>
+        <FileVersion>2.1.3.0</FileVersion>
+        <InformationalVersion>2.1.3.0</InformationalVersion>
         <Authors>Micah Morrison</Authors>
         <Product>WS4W</Product>
     </PropertyGroup>

Installer/WS4WSetupScript.iss

@@ -1,6 +1,6 @@
 #define MyAppNameOld "WireGuard Server For Windows"
 #define MyAppName "Wg Server for Windows"
-#define MyAppVersion "2.1.2"
+#define MyAppVersion "2.1.3"
 #define MyAppPublisher "Micah Morrison"
 #define MyAppURL "https://github.com/micahmo/WgServerforWindows"
 #define MyAppExeName "WgServerforWindows.exe"

WgServerforWindows/Models/TunnelServicePrerequisite.cs

@@ -1,9 +1,12 @@
 using System;
 using System.Linq;
+using System.Net;
 using System.Net.NetworkInformation;
 using System.Windows.Input;
+using SharpConfig;
 using WgAPI;
 using WgAPI.Commands;
+using WgServerforWindows.Controls;
 using WgServerforWindows.Properties;
 
 namespace WgServerforWindows.Models
@@ -35,6 +38,73 @@ public TunnelServicePrerequisite(TunnelServiceNameSubCommand tunnelServiceNameSu
 
         public override async void Resolve()
         {
+            try
+            {
+                // Load the server config and check the listen port
+                ServerConfiguration serverConfiguration = new ServerConfiguration().Load<ServerConfiguration>(Configuration.LoadFromFile(ServerConfigurationPrerequisite.ServerDataPath));
+                string listenPort = serverConfiguration.ListenPortProperty.Value;
+
+                if (int.TryParse(listenPort, out int listenPortInt))
+                {
+                    IPEndPoint[] tcpEndPoints = IPGlobalProperties.GetIPGlobalProperties().GetActiveTcpListeners();
+                    IPEndPoint[] udpEndPoints = IPGlobalProperties.GetIPGlobalProperties().GetActiveUdpListeners();
+
+                    bool anyTcpListener = tcpEndPoints.Any(endpoint => endpoint.Port == listenPortInt);
+                    bool anyUdpListener = udpEndPoints.Any(endpoint => endpoint.Port == listenPortInt);
+
+                    if (anyUdpListener)
+                    {
+                        // Give the user strong warning about UDP listener
+                        bool canceled = false;
+                        UnhandledErrorWindow portWarningDialog = new UnhandledErrorWindow();
+                        portWarningDialog.DataContext = new UnhandledErrorWindowModel
+                        {
+                            Title = Resources.PotentialPortConflict,
+                            Text = string.Format(Resources.UDPPortConflictMessage, listenPort),
+                            SecondaryButtonText = Resources.Cancel,
+                            SecondaryButtonAction = () =>
+                            {
+                                canceled = true;
+                                portWarningDialog.Close();
+                            }
+                        };
+                        portWarningDialog.ShowDialog();
+
+                        if (canceled)
+                        {
+                            return;
+                        }
+                    }
+                    else if (anyTcpListener)
+                    {
+                        // Give the user less strong warning about TCP listener
+                        bool canceled = false;
+                        UnhandledErrorWindow portWarningDialog = new UnhandledErrorWindow();
+                        portWarningDialog.DataContext = new UnhandledErrorWindowModel
+                        {
+                            Title = Resources.PotentialPortConflict,
+                            Text = string.Format(Resources.TCPPortConflictMessage, listenPort),
+                            SecondaryButtonText = Resources.Cancel,
+                            SecondaryButtonAction = () =>
+                            {
+                                canceled = true;
+                                portWarningDialog.Close();
+                            }
+                        };
+                        portWarningDialog.ShowDialog();
+
+                        if (canceled)
+                        {
+                            return;
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                // If we can't verify the listen port, it's ok.
+            }
+
             WaitCursor.SetOverrideCursor(Cursors.Wait);
 
             using (TemporaryFile temporaryFile = new(ServerConfigurationPrerequisite.ServerWGPath, ServerConfigurationPrerequisite.ServerWGPathWithCustomTunnelName))

WgServerforWindows/Properties/Resources.resx

@@ -620,4 +620,13 @@ Note: It is preferable to use a domain name with DDNS to avoid dynamic WAN IPs.<
   <data name="DontShowAgain" xml:space="preserve">
     <value>Don't Show Again</value>
   </data>
+  <data name="PotentialPortConflict" xml:space="preserve">
+    <value>Potential Port Conflict</value>
+  </data>
+  <data name="UDPPortConflictMessage" xml:space="preserve">
+    <value>Another process is listening on UDP Port {0} which may conflict with WireGuard. If you continue, WS4W may fail to install the tunnel service. Do you wish to proceed?</value>
+  </data>
+  <data name="TCPPortConflictMessage" xml:space="preserve">
+    <value>Another process is listening on TCP Port {0}. Since WireGuard uses UDP, there should not (but there may) be a conflict. Do you wish to proceed?</value>
+  </data>
 </root>

WireGuardServerForWindows/VersionInfo2.xml

@@ -2,14 +2,12 @@
 <!-- Things to update: Version, Date, Release Notes -->
 <AppUpdate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/micahmo/WgServerforWindows/master/WireGuardServerForWindows/AppUpdate.xsd">
-  <Version>2.1.2.0</Version>
-  <ReleaseDate>2025-02-20</ReleaseDate>
+  <Version>2.1.3.0</Version>
+  <ReleaseDate>2025-03-05</ReleaseDate>
   <!-- Default download -->
-  <DownloadLink>https://github.com/micahmo/WgServerforWindows/releases/download/v2.1.2/WS4WSetup-2.1.2.exe</DownloadLink>
-  <DownloadFileName>WS4WSetup-2.1.2.exe</DownloadFileName>
+  <DownloadLink>https://github.com/micahmo/WgServerforWindows/releases/download/v2.1.3/WS4WSetup-2.1.3.exe</DownloadLink>
+  <DownloadFileName>WS4WSetup-2.1.3.exe</DownloadFileName>
   <!-- Release notes -->
-  <VersionNotes> - Added the ability to customize the tunnel service name (#104)
- - Delay the WS4W Set NetIPAddress task (#108)
- - Show a warning if the user is running with a temporary profile (#122)</VersionNotes>
+  <VersionNotes> - Show warning if another process is listening on the configured WireGuard server port (#138 and #188)</VersionNotes>
   <ReleaseNotes></ReleaseNotes>
 </AppUpdate>