Added Server.PublicIp

Facepunch.Steamworks.Test/Server/Server.cs

@@ -24,6 +24,34 @@ namespace Facepunch.Steamworks.Test
             }
         }
 
+        [TestMethod]
+        public void PublicIp()
+        {
+            using ( var server = new Facepunch.Steamworks.Server( 252490, 30002, 30003, false, "VersionString" ) )
+            {
+                server.LogOnAnonymous();
+
+                Assert.IsTrue( server.IsValid );
+
+                while ( true )
+                {
+                    var ip = server.PublicIp;
+
+                    if ( ip == null )
+                    {
+                        System.Threading.Thread.Sleep( 100 );
+                        server.Update();
+                        continue;
+                    }
+
+                    Assert.IsNotNull( ip );
+                    Console.WriteLine( ip.ToString() );
+                    break;
+                }
+
+            }
+        }
+
         [TestMethod]
         public void AuthCallback()
         {

Facepunch.Steamworks/Facepunch.Steamworks.csproj

@@ -180,6 +180,7 @@
     <Compile Include="SteamNative\SteamNative.Callback.cs" />
     <Compile Include="SteamNative\SteamNative.Structs.cs" />
     <Compile Include="SteamNative\SteamNative.Types.cs" />
+    <Compile Include="Utility.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>

Facepunch.Steamworks/Server.cs

@@ -250,6 +250,9 @@ namespace Facepunch.Steamworks
             get { return native.gameServer.BLoggedOn(); }
         }
 
+        /// <summary>
+        /// Shutdown interface, disconnect from Steam
+        /// </summary>
         public override void Dispose()
         {
             if ( Query != null )
@@ -269,5 +272,23 @@ namespace Facepunch.Steamworks
 
             base.Dispose();
         }
+
+        /// <summary>
+        /// To the best of its ability this tries to get the server's
+        /// current public ip address. Be aware that this is likely to return
+        /// null for the first few seconds after initialization.
+        /// </summary>
+        public System.Net.IPAddress PublicIp
+        {
+            get
+            {
+                var ip = native.gameServer.GetPublicIP();
+                if ( ip == 0 ) return null;
+
+                return new System.Net.IPAddress( Utility.SwapBytes( ip ) );
+            }
+        }
+
+
     }
 }

Facepunch.Steamworks/Utility.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Facepunch.Steamworks
+{
+    internal static class Utility
+    {
+        static internal uint SwapBytes( uint x )
+        {
+            return ( ( x & 0x000000ff ) << 24 ) +
+                   ( ( x & 0x0000ff00 ) << 8 ) +
+                   ( ( x & 0x00ff0000 ) >> 8 ) +
+                   ( ( x & 0xff000000 ) >> 24 );
+        }
+    }
+}