diff --git a/shadowsocks-csharp/Controller/GfwListUpdater.cs b/shadowsocks-csharp/Controller/GfwListUpdater.cs
index c377efd2..2bebdcbf 100644
--- a/shadowsocks-csharp/Controller/GfwListUpdater.cs
+++ b/shadowsocks-csharp/Controller/GfwListUpdater.cs
@@ -90,180 +90,6 @@ namespace Shadowsocks.Controller
                 return valid_lines.ToArray();
             }
 
-            /* refer https://github.com/clowwindy/gfwlist2pac/blob/master/gfwlist2pac/main.py */
-            public string[] GetDomains()
-            {
-                List<string> lines = new List<string>(GetValidLines());
-                lines.AddRange(GetBuildIn());
-                List<string> domains = new List<string>(lines.Count);
-                for (int i = 0; i < lines.Count; i++)
-                {
-                    string line = lines[i];
-                    if (line.IndexOf(".*") >= 0)
-                        continue;
-                    if (line.StartsWith("http://"))
-                        line = line.Substring(7);
-                    else if (line.StartsWith("https://"))
-                        line = line.Substring(8);
-                    if (line.IndexOf("*") >= 0)
-                        line = line.Replace("*", "/");
-                    if (line.StartsWith("||"))
-                        while (line.StartsWith("||"))
-                            line = line.Substring(2);
-                    else if (line.StartsWith("|"))
-                        line = line.TrimStart('|');
-                    else if (line.StartsWith("."))
-                        line = line.TrimStart('.');
-                    if (line.StartsWith("!"))
-                        continue;
-                    else if (line.StartsWith("["))
-                        continue;
-                    else if (line.StartsWith("@"))
-                        continue; /*ignore white list*/
-                    int pos = line.IndexOfAny(new char[] { '/' });
-                    if (pos >= 0)
-                        line = line.Substring(0, pos);
-                    if (line.Length > 0)
-                        domains.Add(line);
-                }
-                return RemoveDuplicate(domains.ToArray());
-            }
-
-            /* refer https://github.com/clowwindy/gfwlist2pac/blob/master/gfwlist2pac/main.py */
-            public string[] GetReducedDomains()
-            {
-                string[] domains = GetDomains();
-                List<string> new_domains = new List<string>(domains.Length);
-                TldIndex tldIndex = GetTldIndex();
-
-                foreach (string domain in domains)
-                {
-                    string last_root_domain = null;
-                    int pos;
-                    pos = domain.LastIndexOf('.');
-                    last_root_domain = domain.Substring(pos + 1);
-                    if (!tldIndex.Contains(last_root_domain))
-                        continue;
-                    while (pos > 0)
-                    {
-                        pos = domain.LastIndexOf('.', pos - 1);
-                        last_root_domain = domain.Substring(pos + 1);
-                        if (tldIndex.Contains(last_root_domain))
-                            continue;
-                        else
-                            break;
-                    }
-                    if (last_root_domain != null)
-                        new_domains.Add(last_root_domain);
-                }
-
-                return RemoveDuplicate(new_domains.ToArray());
-            }
-
-            private string[] RemoveDuplicate(string[] src)
-            {
-                List<string> list = new List<string>(src.Length);
-                Dictionary<string, string> dic = new Dictionary<string, string>(src.Length);
-                foreach (string s in src)
-                {
-                    if (!dic.ContainsKey(s))
-                    {
-                        dic.Add(s, s);
-                        list.Add(s);
-                    }
-                }
-                return list.ToArray();
-            }
-
-            private string[] GetTlds()
-            {
-                string[] tlds = null;
-                byte[] pacGZ = Resources.tld_txt;
-                byte[] buffer = new byte[1024];
-                int n;
-                using (MemoryStream sb = new MemoryStream())
-                {
-                    using (GZipStream input = new GZipStream(new MemoryStream(pacGZ),
-                        CompressionMode.Decompress, false))
-                    {
-                        while ((n = input.Read(buffer, 0, buffer.Length)) > 0)
-                        {
-                            sb.Write(buffer, 0, n);
-                        }
-                    }
-                    tlds = System.Text.Encoding.UTF8.GetString(sb.ToArray())
-                        .Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
-                }
-                return tlds;
-            }
-
-            private TldIndex GetTldIndex()
-            {
-                string[] tlds = GetTlds();
-                TldIndex index = new TldIndex();
-                foreach (string tld in tlds)
-                {
-                    index.Add(tld);
-                }
-                return index;
-            }
-
-            private string[] GetBuildIn()
-            {
-                string[] buildin = null;
-                byte[] builtinGZ = Resources.builtin_txt;
-                byte[] buffer = new byte[1024];
-                int n;
-                using (MemoryStream sb = new MemoryStream())
-                {
-                    using (GZipStream input = new GZipStream(new MemoryStream(builtinGZ),
-                        CompressionMode.Decompress, false))
-                    {
-                        while ((n = input.Read(buffer, 0, buffer.Length)) > 0)
-                        {
-                            sb.Write(buffer, 0, n);
-                        }
-                    }
-                    buildin = System.Text.Encoding.UTF8.GetString(sb.ToArray())
-                        .Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
-                }
-                return buildin;
-            }
-
-            public class TldIndex
-            {
-                List<string> patterns = new List<string>();
-                IDictionary<string, string> dic = new Dictionary<string, string>();
-
-                public void Add(string tld)
-                {
-                    if (string.IsNullOrEmpty(tld))
-                        return;
-                    if (tld.IndexOfAny(new char[] { '*', '?' }) >= 0)
-                    {
-                        patterns.Add("^" + Regex.Escape(tld).Replace("\\*", ".*").Replace("\\?", ".") + "$");
-                    }
-                    else if (!dic.ContainsKey(tld))
-                    {
-                        dic.Add(tld, tld);
-                    }
-                }
-
-                public bool Contains(string tld)
-                {
-                    if (dic.ContainsKey(tld))
-                        return true;
-                    foreach (string pattern in patterns)
-                    {
-                        if (Regex.IsMatch(tld, pattern))
-                            return true;
-                    }
-                    return false;
-                }
-
-            }
-
-
         }
 
     }
diff --git a/shadowsocks-csharp/Data/builtin.txt.gz b/shadowsocks-csharp/Data/builtin.txt.gz
deleted file mode 100644
index c846e644..00000000
Binary files a/shadowsocks-csharp/Data/builtin.txt.gz and /dev/null differ
diff --git a/shadowsocks-csharp/Data/tld.txt.gz b/shadowsocks-csharp/Data/tld.txt.gz
deleted file mode 100644
index 693a6e8c..00000000
Binary files a/shadowsocks-csharp/Data/tld.txt.gz and /dev/null differ
diff --git a/shadowsocks-csharp/Properties/Resources.Designer.cs b/shadowsocks-csharp/Properties/Resources.Designer.cs
index c4bfead9..5139429f 100755
--- a/shadowsocks-csharp/Properties/Resources.Designer.cs
+++ b/shadowsocks-csharp/Properties/Resources.Designer.cs
@@ -71,16 +71,6 @@ namespace Shadowsocks.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized resource of type System.Byte[].
-        /// </summary>
-        internal static byte[] builtin_txt {
-            get {
-                object obj = ResourceManager.GetObject("builtin_txt", resourceCulture);
-                return ((byte[])(obj));
-            }
-        }
-        
-        /// <summary>
         ///   Looks up a localized string similar to Shadowsocks=Shadowsocks
         ///Enable=启用代理
         ///Mode=代理模式
@@ -205,15 +195,5 @@ namespace Shadowsocks.Properties {
                 return ((System.Drawing.Bitmap)(obj));
             }
         }
-        
-        /// <summary>
-        ///   Looks up a localized resource of type System.Byte[].
-        /// </summary>
-        internal static byte[] tld_txt {
-            get {
-                object obj = ResourceManager.GetObject("tld_txt", resourceCulture);
-                return ((byte[])(obj));
-            }
-        }
     }
 }
diff --git a/shadowsocks-csharp/Properties/Resources.resx b/shadowsocks-csharp/Properties/Resources.resx
index 24d1b168..ee5f98ea 100755
--- a/shadowsocks-csharp/Properties/Resources.resx
+++ b/shadowsocks-csharp/Properties/Resources.resx
@@ -121,9 +121,6 @@
   <data name="abp_js" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Data\abp.js.gz;System.Byte[], mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </data>
-  <data name="builtin_txt" type="System.Resources.ResXFileRef, System.Windows.Forms">
-    <value>..\Data\builtin.txt.gz;System.Byte[], mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </data>
   <data name="cn" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\data\cn.txt;System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089;utf-8</value>
   </data>
@@ -151,7 +148,4 @@
   <data name="ssw128" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\ssw128.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
-  <data name="tld_txt" type="System.Resources.ResXFileRef, System.Windows.Forms">
-    <value>..\Data\tld.txt.gz;System.Byte[], mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </data>
 </root>
\ No newline at end of file
diff --git a/shadowsocks-csharp/shadowsocks-csharp.csproj b/shadowsocks-csharp/shadowsocks-csharp.csproj
index 314ea6a3..1848edd9 100755
--- a/shadowsocks-csharp/shadowsocks-csharp.csproj
+++ b/shadowsocks-csharp/shadowsocks-csharp.csproj
@@ -102,6 +102,11 @@
     <Compile Include="Controller\PACServer.cs" />
     <Compile Include="Model\Server.cs" />
     <Compile Include="Model\Configuration.cs" />
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
     <Compile Include="Util\Util.cs" />
     <Compile Include="View\ConfigForm.cs">
       <SubType>Form</SubType>
@@ -128,14 +133,9 @@
     </EmbeddedResource>
     <EmbeddedResource Include="Properties\Resources.resx">
       <Generator>ResXFileCodeGenerator</Generator>
-      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
       <SubType>Designer</SubType>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
-    <Compile Include="Properties\Resources.Designer.cs">
-      <AutoGen>True</AutoGen>
-      <DependentUpon>Resources.resx</DependentUpon>
-      <DesignTime>True</DesignTime>
-    </Compile>
     <EmbeddedResource Include="View\QRCodeForm.resx">
       <DependentUpon>QRCodeForm.cs</DependentUpon>
     </EmbeddedResource>
@@ -144,13 +144,11 @@
       <SubType>Designer</SubType>
     </None>
     <None Include="Data\abp.js.gz" />
-    <None Include="Data\builtin.txt.gz" />
     <None Include="Data\libsscrypto.dll.gz" />
     <None Include="Data\polipo.exe.gz" />
     <None Include="Data\proxy.pac.txt.gz" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="Data\tld.txt.gz" />
     <None Include="Resources\ss20.png" />
     <None Include="Resources\ss16.png" />
     <None Include="Resources\ss24.png" />