Update to SK2 Alpha8 and .NET Core 2.0

DepotDownloader/DepotDownloader.csproj

@@ -1,13 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>netcoreapp1.1;net46</TargetFrameworks>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
-    <RuntimeIdentifiers>win7-x86;win7-x64;ubuntu.16.10-x64;osx.10.12-x64</RuntimeIdentifiers>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="protobuf-net" Version="2.1.0" />
-    <PackageReference Include="SteamKit2" Version="2.0.0-Alpha" />
-    <PackageReference Include="system.componentmodel.typeconverter" Version="4.3.0" />
+    <PackageReference Include="SteamKit2" Version="2.0.0-Alpha8" />
   </ItemGroup>
 </Project>

DepotDownloader/Util.cs

@@ -12,8 +12,6 @@ namespace DepotDownloader
     {
         public static string GetSteamOS()
         {
-#if NETCOREAPP1_1
-
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
             {
                 return "windows";
@@ -27,22 +25,6 @@ namespace DepotDownloader
                 return "linux";
             }
 
-#elif NET46
-            
-            switch (Environment.OSVersion.Platform)
-            {
-                case PlatformID.Win32NT:
-                case PlatformID.Win32Windows:
-                    return "windows";
-                case PlatformID.MacOSX:
-                    return "macos";
-                case PlatformID.Unix:
-                    return IsMacOSX() ? "macos" : "linux";
-            }
-#else
-#error Unknown Target Platform
-#endif
-
             return "unknown";
         }
 
@@ -145,52 +127,5 @@ namespace DepotDownloader
                 ( sb, v ) => sb.Append( v.ToString( "x2" ) )
                 ).ToString();
         }
-
-#if NET46
-
-         [DllImport( "libc" )]
-        static extern int uname( IntPtr buf );
-
-        static int _isMacOSX = -1;
-
-        // Environment.OSVersion.Platform returns PlatformID.Unix under Mono on OS X
-        // Code adapted from Mono: mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUI.cs
-        private static bool IsMacOSX()
-        {
-            if ( _isMacOSX != -1 )
-                return _isMacOSX == 1;
-
-            IntPtr buf = IntPtr.Zero;
-
-            try
-            {
-                // The size of the utsname struct varies from system to system, but this _seems_ more than enough
-                buf = Marshal.AllocHGlobal( 4096 );
-
-                if ( uname( buf ) == 0 )
-                {
-                    string sys = Marshal.PtrToStringAnsi( buf );
-                    if ( sys == "Darwin" )
-                    {
-                        _isMacOSX = 1;
-                        return true;
-                    }
-                }
-            }
-            catch
-            {
-                // Do nothing?
-            }
-            finally
-            {
-                if ( buf != IntPtr.Zero )
-                    Marshal.FreeHGlobal( buf );
-            }
-
-            _isMacOSX = 0;
-            return false;
-        }
-
-#endif
     }
 }