update CHANGES

Add availability statistics service and a simple strategy

CHANGES

@@ -1,3 +1,32 @@
+2.5.4 2015-08-16
+- Hide Privoxy icon
+
+2.5.3 2015-08-16
+- Replace Polipo with Privoxy
+- Add Choose by Total Packet Loss
+
+2.5.2 2015-08-04
+- Add log viewer
+
+2.5.1 2015-07-26
+- Prevent HA from switching servers too frequently
+- Fix server settings can not be updated when using HA
+- Fix server port can't be 8123
+- Other minor fixes
+
+2.5 2015-07-25
+- Support load balance
+- Support high availability
+
+2.4 2015-07-11
+- Support UDP relay
+- Support online PAC
+- Migrate update checker to GitHub releases
+- Other fixes
+
+2.3.1 2015-03-06
+- Support user rule
+
 2.3 2015-01-25
 - Use the same port for every profile
 - Use the same port for HTTP/Socks5/PAC

CONTRIBUTING.md

@@ -4,24 +4,15 @@ How to Contribute
 Pull Requests
 -------------
 
-1. Pull requests are welcome. If you would like to add a large feature
-or make a significant change, make sure to open an issue to discuss with
-people first.
+1. Pull requests are welcome.
 2. Make sure to pass the unit tests. Write unit tests for new modules if
 needed.
 
 Issues
 ------
 
-1. Only bugs and feature requests are accepted here.
-2. We'll only work on important features. If the feature you're asking only
-benefits a few people, you'd better implement the feature yourself and send us
-a pull request, or ask some of your friends to do so.
-3. We don't answer questions of any other types here. Since very few people
-are watching the issue tracker here, you'll probably get no help from here.
-Read [Troubleshooting] and get help from forums or [mailing lists].
-4. Issues in languages other than English will be Google translated into English
-later.
+1. Nobody has reported any bugs but posted a lot of questions in the last
+few months. So we're closing the issue tracker.
 
 
 [Troubleshooting]: https://github.com/clowwindy/shadowsocks/wiki/Troubleshooting

LICENSE.txt

@@ -20,30 +20,348 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 3rd party projects
 ==================
 
-polipo
+Privoxy
 ------------------
 
-https://github.com/jech/polipo
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
 
-Copyright (c) 2003-2008 by Juliusz Chroboczek
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+                            Preamble
 
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
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+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
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+
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
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+
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+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
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+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+
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+
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+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
 
 
 PolarSSL
@@ -98,7 +416,6 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 
-
 libsodium
 ---------
 

README.md

@@ -6,34 +6,51 @@ Shadowsocks for Windows
 #### Features
 
 1. System proxy configuration
-2. Fast profile switching
-3. PAC mode and global mode
-4. Compatible with IE
-5. Only a single exe file of 200KB size
+2. PAC mode and global mode
+3. GFWList and user rules
+4. Supports HTTP proxy
+5. Supports server auto switching
+6. Supports UDP relay (see Usage)
 
 #### Download
 
-Download [latest release].
+Download a [latest release].
 
-For <= Windows 7, download Shadowsocks-win-x.x.x.zip.
+Notice: .Net 2.0 doesn't work well on Windows 10. We no longer support .Net 2.0. Both Shadowsocks-win-xxx.zip and Shadowsocks-win-dotnet4.0-xxx.zip are exactly the same file now. If you use Windows XP or 7, please install .Net 4.0 or higher.
 
-For >= Windows 8, download Shadowsocks-win-dotnet4.0-x.x.x.zip, unless you have .Net 2.0 installed.
+#### Basic
 
-#### Usage
-
-1. Find Shadowsocks icon in notification tray
+1. Find Shadowsocks icon in the notification tray
 2. You can add multiple servers in servers menu
 3. Select Enable System Proxy menu to enable system proxy. Please disable other
 proxy addons in your browser, or set them to use system proxy
 4. You can also configure your browser proxy manually if you don't want to enable
 system proxy. Set Socks5 or HTTP proxy to 127.0.0.1:1080. You can change this
 port in Server -> Edit Servers
-5. You can change PAC rules by editing the PAC file. When you save the PAC file
+
+#### PAC
+
+1. You can change PAC rules by editing the PAC file. When you save the PAC file
 with any editor, Shadowsocks will notify browsers about the change automatically
+2. You can also update PAC file from GFWList (maintained by 3rd party)
+3. You can also use online PAC URL
 
-### Develop
+#### Server Auto Switching
 
-Visual Studio Express 2012 is recommended.
+1. Load balance: choosing server randomly
+2. High availability: choosing the best server (low latency and packet loss)
+3. Choose By Total Package Loss: ping and choose. Please also enable
+   `Availability Statistics` in the menu if you want to use this
+4. Write your own strategy by implement IStrategy interface and send us a pull request!
+
+#### UDP
+
+For UDP, you need to use SocksCap or ProxyCap to force programs you want
+to proxy to tunnel over Shadowsocks
+
+#### Develop
+
+Visual Studio 2015 is required.
 
 #### License
 
@@ -42,4 +59,4 @@ GPLv3
 
 [Appveyor]:       https://ci.appveyor.com/project/clowwindy/shadowsocks-csharp
 [Build Status]:   https://ci.appveyor.com/api/projects/status/gknc8l1lxy423ehv/branch/master
-[latest release]: https://sourceforge.net/projects/shadowsocksgui/files/dist/
+[latest release]: https://github.com/shadowsocks/shadowsocks-csharp/releases

shadowsocks-csharp/Controller/Logging.cs

@@ -31,6 +31,14 @@ namespace Shadowsocks.Controller
             }
         }
 
+        public static void Debug(object o)
+        {
+
+#if DEBUG
+            Console.WriteLine(o);
+#endif
+        }
+
         public static void LogUsefulException(Exception e)
         {
             // just log useful exceptions, not all of them
@@ -55,6 +63,9 @@ namespace Shadowsocks.Controller
                     Console.WriteLine(e);
                 }
             }
+            else if (e is ObjectDisposedException)
+            {
+            }
             else
             {
                 Console.WriteLine(e);

shadowsocks-csharp/Controller/Service/AvailabilityStatistics.cs

@@ -0,0 +1,109 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net.NetworkInformation;
+using System.Threading;
+using Shadowsocks.Model;
+using System.Reflection;
+
+namespace Shadowsocks.Controller
+{
+    class AvailabilityStatistics
+    {
+        private static readonly string StatisticsFilesName = "shadowsocks.availability.csv";
+        private static readonly string Delimiter = ",";
+        private static readonly int Timeout = 500;
+        private static readonly int Repeat = 4; //repeat times every evaluation
+        private static readonly int Interval = 10 * 60 * 1000;  //evaluate proxies every 15 minutes
+        private Timer timer = null;
+        private State state = null;
+        private List<Server> servers;
+
+        public static string AvailabilityStatisticsFile;
+
+        //static constructor to initialize every public static fields before refereced
+        static AvailabilityStatistics()
+        {
+            string temppath = Path.GetTempPath();
+            AvailabilityStatisticsFile = Path.Combine(temppath, StatisticsFilesName);
+        }
+
+        public bool Set(bool enabled)
+        {
+            try
+            {
+                if (enabled)
+                {
+                    if (timer?.Change(0, Interval) == null)
+                    {
+                        state = new State();
+                        timer = new Timer(Evaluate, state, 0, Interval);
+                    }
+                }
+                else
+                {
+                    timer?.Dispose();
+                }
+                return true;
+            }
+            catch (Exception e)
+            {
+                Logging.LogUsefulException(e);
+                return false;
+            }
+        }
+
+        private void Evaluate(object obj)
+        {
+            Ping ping = new Ping();
+            State state = (State) obj;
+            foreach (var server in servers)
+            {
+                Logging.Debug("eveluating " + server.FriendlyName());
+                foreach (var _ in Enumerable.Range(0, Repeat))
+                {
+                    //TODO: do simple analyze of data to provide friendly message, like package loss.
+                    string timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
+                    //ICMP echo. we can also set options and special bytes
+                    //seems no need to use SendPingAsync
+                    PingReply reply = ping.Send(server.server, Timeout);
+                    state.data = new List<KeyValuePair<string, string>>();
+                    state.data.Add(new KeyValuePair<string, string>("Timestamp", timestamp));
+                    state.data.Add(new KeyValuePair<string, string>("Server", server.FriendlyName()));
+                    state.data.Add(new KeyValuePair<string, string>("Status", reply.Status.ToString()));
+                    state.data.Add(new KeyValuePair<string, string>("RoundtripTime", reply.RoundtripTime.ToString()));
+                    //state.data.Add(new KeyValuePair<string, string>("data", reply.Buffer.ToString())); // The data of reply
+                    Append(state.data);
+                }
+            }
+        }
+
+        private static void Append(List<KeyValuePair<string, string>> data)
+        {
+            string dataLine = string.Join(Delimiter, data.Select(kv => kv.Value).ToArray());
+            string[] lines;
+            if (!File.Exists(AvailabilityStatisticsFile))
+            {
+                string headerLine = string.Join(Delimiter, data.Select(kv => kv.Key).ToArray());
+                lines = new string[] { headerLine, dataLine };
+            }
+            else
+            {
+                lines = new string[] { dataLine };
+            }
+            File.AppendAllLines(AvailabilityStatisticsFile, lines);
+        }
+
+        internal void UpdateConfiguration(Configuration _config)
+        {
+            Set(_config.availabilityStatistics);
+            servers = _config.configs;
+        }
+
+        private class State
+        {
+            public List<KeyValuePair<string, string>> data = new List<KeyValuePair<string, string>>();
+        }
+    }
+}

shadowsocks-csharp/Controller/Service/Listener.cs

@@ -12,12 +12,19 @@ namespace Shadowsocks.Controller
     {
         public interface Service
         {
-            bool Handle(byte[] firstPacket, int length, Socket socket);
+            bool Handle(byte[] firstPacket, int length, Socket socket, object state);
+        }
+
+        public class UDPState
+        {
+            public byte[] buffer = new byte[4096];
+            public EndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
         }
 
         Configuration _config;
         bool _shareOverLAN;
-        Socket _socket;
+        Socket _tcpSocket;
+        Socket _udpSocket;
         IList<Service> _services;
 
         public Listener(IList<Service> services)
@@ -51,8 +58,10 @@ namespace Shadowsocks.Controller
             try
             {
                 // Create a TCP/IP socket.
-                _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
-                _socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
+                _tcpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+                _udpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+                _tcpSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
+                _udpSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
                 IPEndPoint localEndPoint = null;
                 if (_shareOverLAN)
                 {
@@ -64,29 +73,73 @@ namespace Shadowsocks.Controller
                 }
 
                 // Bind the socket to the local endpoint and listen for incoming connections.
-                _socket.Bind(localEndPoint);
-                _socket.Listen(1024);
+                _tcpSocket.Bind(localEndPoint);
+                _udpSocket.Bind(localEndPoint);
+                _tcpSocket.Listen(1024);
 
 
                 // Start an asynchronous socket to listen for connections.
                 Console.WriteLine("Shadowsocks started");
-                _socket.BeginAccept(
+                _tcpSocket.BeginAccept(
                     new AsyncCallback(AcceptCallback),
-                    _socket);
+                    _tcpSocket);
+                UDPState udpState = new UDPState();
+                _udpSocket.BeginReceiveFrom(udpState.buffer, 0, udpState.buffer.Length, 0, ref udpState.remoteEndPoint, new AsyncCallback(RecvFromCallback), udpState);
             }
             catch (SocketException)
             {
-                _socket.Close();
+                _tcpSocket.Close();
                 throw;
             }
         }
 
         public void Stop()
         {
-            if (_socket != null)
+            if (_tcpSocket != null)
             {
-                _socket.Close();
-                _socket = null;
+                _tcpSocket.Close();
+                _tcpSocket = null;
+            }
+            if (_udpSocket != null)
+            {
+                _udpSocket.Close();
+                _udpSocket = null;
+            }
+        }
+
+        public void RecvFromCallback(IAsyncResult ar)
+        {
+            UDPState state = (UDPState)ar.AsyncState;
+            try
+            {
+                int bytesRead = _udpSocket.EndReceiveFrom(ar, ref state.remoteEndPoint);
+                foreach (Service service in _services)
+                {
+                    if (service.Handle(state.buffer, bytesRead, _udpSocket, state))
+                    {
+                        break;
+                    }
+                }
+            }
+            catch (ObjectDisposedException)
+            {
+            }
+            catch (Exception)
+            {
+            }
+            finally
+            {
+                try
+                {
+                    _udpSocket.BeginReceiveFrom(state.buffer, 0, state.buffer.Length, 0, ref state.remoteEndPoint, new AsyncCallback(RecvFromCallback), state);
+                }
+                catch (ObjectDisposedException)
+                {
+                    // do nothing
+                }
+                catch (Exception)
+                {
+                }
             }
         }
 
@@ -144,14 +197,16 @@ namespace Shadowsocks.Controller
                 int bytesRead = conn.EndReceive(ar);
                 foreach (Service service in _services)
                 {
-                    if (service.Handle(buf, bytesRead, conn))
+                    if (service.Handle(buf, bytesRead, conn, null))
                     {
                         return;
                     }
                 }
                 // no service found for this
-                // shouldn't happen
-                conn.Close();
+                if (conn.ProtocolType == ProtocolType.Tcp)
+                {
+                    conn.Close();
+                }
             }
             catch (Exception e)
             {

shadowsocks-csharp/Controller/Service/PACServer.cs

@@ -33,8 +33,12 @@ namespace Shadowsocks.Controller
             this._config = config;
         }
 
-        public bool Handle(byte[] firstPacket, int length, Socket socket)
+        public bool Handle(byte[] firstPacket, int length, Socket socket, object state)
         {
+            if (socket.ProtocolType != ProtocolType.Tcp)
+            {
+                return false;
+            }
             try
             {
                 string request = Encoding.UTF8.GetString(firstPacket, 0, length);

shadowsocks-csharp/Controller/Service/PolipoRunner.cs

@@ -8,6 +8,7 @@ using System.IO.Compression;
 using System.Text;
 using System.Net.NetworkInformation;
 using System.Net;
+using System.Runtime.InteropServices;
 
 namespace Shadowsocks.Controller
 {
@@ -22,7 +23,8 @@ namespace Shadowsocks.Controller
             temppath = Path.GetTempPath();
             try
             {
-                FileManager.UncompressFile(temppath + "/ss_polipo.exe", Resources.polipo_exe);
+                FileManager.UncompressFile(temppath + "/ss_privoxy.exe", Resources.privoxy_exe);
+                FileManager.UncompressFile(temppath + "/mgwz.dll", Resources.mgwz_dll);
             }
             catch (IOException e)
             {
@@ -43,7 +45,7 @@ namespace Shadowsocks.Controller
             Server server = configuration.GetCurrentServer();
             if (_process == null)
             {
-                Process[] existingPolipo = Process.GetProcessesByName("ss_polipo");
+                Process[] existingPolipo = Process.GetProcessesByName("ss_privoxy");
                 foreach (Process p in existingPolipo)
                 {
                     try
@@ -56,17 +58,17 @@ namespace Shadowsocks.Controller
                         Console.WriteLine(e.ToString());
                     }
                 }
-                string polipoConfig = Resources.polipo_config;
+                string polipoConfig = Resources.privoxy_conf;
                 _runningPort = this.GetFreePort();
                 polipoConfig = polipoConfig.Replace("__SOCKS_PORT__", configuration.localPort.ToString());
                 polipoConfig = polipoConfig.Replace("__POLIPO_BIND_PORT__", _runningPort.ToString());
                 polipoConfig = polipoConfig.Replace("__POLIPO_BIND_IP__", configuration.shareOverLan ? "0.0.0.0" : "127.0.0.1");
-                FileManager.ByteArrayToFile(temppath + "/polipo.conf", System.Text.Encoding.UTF8.GetBytes(polipoConfig));
+                FileManager.ByteArrayToFile(temppath + "/privoxy.conf", System.Text.Encoding.UTF8.GetBytes(polipoConfig));
 
                 _process = new Process();
                 // Configure the process using the StartInfo properties.
-                _process.StartInfo.FileName = temppath + "/ss_polipo.exe";
-                _process.StartInfo.Arguments = "-c \"" + temppath + "/polipo.conf\"";
+                _process.StartInfo.FileName = temppath + "/ss_privoxy.exe";
+                _process.StartInfo.Arguments = " \"" + temppath + "/privoxy.conf\"";
                 _process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                 _process.StartInfo.UseShellExecute = true;
                 _process.StartInfo.CreateNoWindow = true;
@@ -74,6 +76,7 @@ namespace Shadowsocks.Controller
                 //_process.StartInfo.RedirectStandardError = true;
                 _process.Start();
             }
+            RefreshTrayArea();
         }
 
         public void Stop()
@@ -91,6 +94,7 @@ namespace Shadowsocks.Controller
                 }
                 _process = null;
             }
+            RefreshTrayArea();
         }
 
         private int GetFreePort()
@@ -122,5 +126,50 @@ namespace Shadowsocks.Controller
             }
             throw new Exception("No free port found.");
         }
+
+        [StructLayout(LayoutKind.Sequential)]
+        public struct RECT
+        {
+            public int left;
+            public int top;
+            public int right;
+            public int bottom;
+        }
+        [DllImport("user32.dll")]
+        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
+        [DllImport("user32.dll")]
+        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
+        [DllImport("user32.dll")]
+        public static extern bool GetClientRect(IntPtr hWnd, out RECT lpRect);
+        [DllImport("user32.dll")]
+        public static extern IntPtr SendMessage(IntPtr hWnd, uint msg, int wParam, int lParam);
+
+
+        public void RefreshTrayArea()
+        {
+            IntPtr systemTrayContainerHandle = FindWindow("Shell_TrayWnd", null);
+            IntPtr systemTrayHandle = FindWindowEx(systemTrayContainerHandle, IntPtr.Zero, "TrayNotifyWnd", null);
+            IntPtr sysPagerHandle = FindWindowEx(systemTrayHandle, IntPtr.Zero, "SysPager", null);
+            IntPtr notificationAreaHandle = FindWindowEx(sysPagerHandle, IntPtr.Zero, "ToolbarWindow32", "Notification Area");
+            if (notificationAreaHandle == IntPtr.Zero)
+            {
+                notificationAreaHandle = FindWindowEx(sysPagerHandle, IntPtr.Zero, "ToolbarWindow32", "User Promoted Notification Area");
+                IntPtr notifyIconOverflowWindowHandle = FindWindow("NotifyIconOverflowWindow", null);
+                IntPtr overflowNotificationAreaHandle = FindWindowEx(notifyIconOverflowWindowHandle, IntPtr.Zero, "ToolbarWindow32", "Overflow Notification Area");
+                RefreshTrayArea(overflowNotificationAreaHandle);
+            }
+            RefreshTrayArea(notificationAreaHandle);
+        }
+
+
+        private static void RefreshTrayArea(IntPtr windowHandle)
+        {
+            const uint wmMousemove = 0x0200;
+            RECT rect;
+            GetClientRect(windowHandle, out rect);
+            for (var x = 0; x < rect.right; x += 5)
+                for (var y = 0; y < rect.bottom; y += 5)
+                    SendMessage(windowHandle, wmMousemove, 0, (y << 16) + x);
+        }
     }
 }

shadowsocks-csharp/Controller/Service/PortForwarder.cs

@@ -15,8 +15,12 @@ namespace Shadowsocks.Controller
             this._targetPort = targetPort;
         }
 
-        public bool Handle(byte[] firstPacket, int length, Socket socket)
+        public bool Handle(byte[] firstPacket, int length, Socket socket, object state)
         {
+            if (socket.ProtocolType != ProtocolType.Tcp)
+            {
+                return false;
+            }
             new Handler().Start(firstPacket, length, socket, this._targetPort);
             return true;
         }

shadowsocks-csharp/Controller/Service/TCPRelay.cs

@@ -5,20 +5,26 @@ using System.Net.Sockets;
 using System.Net;
 using Shadowsocks.Encryption;
 using Shadowsocks.Model;
+using Shadowsocks.Controller.Strategy;
+using System.Timers;
 
 namespace Shadowsocks.Controller
 {
 
-    class Local : Listener.Service
+    class TCPRelay : Listener.Service
     {
-        private Configuration _config;
-        public Local(Configuration config)
+        private ShadowsocksController _controller;
+        public TCPRelay(ShadowsocksController controller)
         {
-            this._config = config;
+            this._controller = controller;
         }
 
-        public bool Handle(byte[] firstPacket, int length, Socket socket)
+        public bool Handle(byte[] firstPacket, int length, Socket socket, object state)
         {
+            if (socket.ProtocolType != ProtocolType.Tcp)
+            {
+                return false;
+            }
             if (length < 2 || firstPacket[0] != 5)
             {
                 return false;
@@ -26,9 +32,7 @@ namespace Shadowsocks.Controller
             socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
             Handler handler = new Handler();
             handler.connection = socket;
-            Server server = _config.GetCurrentServer();
-            handler.encryptor = EncryptorFactory.GetEncryptor(server.method, server.password);
-            handler.server = server;
+            handler.controller = _controller;
 
             handler.Start(firstPacket, length);
             return true;
@@ -43,12 +47,20 @@ namespace Shadowsocks.Controller
         // Client  socket.
         public Socket remote;
         public Socket connection;
+        public ShadowsocksController controller;
+        private int retryCount = 0;
+        private bool connected;
 
+        private byte command;
         private byte[] _firstPacket;
         private int _firstPacketLength;
         // Size of receive buffer.
         public const int RecvSize = 16384;
         public const int BufferSize = RecvSize + 32;
+
+        private int totalRead = 0;
+        private int totalWrite = 0;
+
         // remote receive buffer
         private byte[] remoteRecvBuffer = new byte[RecvSize];
         // remote send buffer
@@ -66,36 +78,24 @@ namespace Shadowsocks.Controller
         private object encryptionLock = new object();
         private object decryptionLock = new object();
 
+        private DateTime _startConnectTime;
+
+        public void CreateRemote()
+        {
+            Server server = controller.GetAServer(IStrategyCallerType.TCP, (IPEndPoint)connection.RemoteEndPoint);
+            if (server == null || server.server == "")
+            {
+                throw new ArgumentException("No server configured");
+            }
+            this.encryptor = EncryptorFactory.GetEncryptor(server.method, server.password);
+            this.server = server;
+        }
+
         public void Start(byte[] firstPacket, int length)
         {
             this._firstPacket = firstPacket;
             this._firstPacketLength = length;
-            try
-            {
-                // TODO async resolving
-                IPAddress ipAddress;
-                bool parsed = IPAddress.TryParse(server.server, out ipAddress);
-                if (!parsed)
-                {
-                    IPHostEntry ipHostInfo = Dns.GetHostEntry(server.server);
-                    ipAddress = ipHostInfo.AddressList[0];
-                }
-                IPEndPoint remoteEP = new IPEndPoint(ipAddress, server.server_port);
-
-
-                remote = new Socket(ipAddress.AddressFamily,
-                    SocketType.Stream, ProtocolType.Tcp);
-                remote.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
-
-                // Connect to the remote endpoint.
-                remote.BeginConnect(remoteEP,
-                    new AsyncCallback(ConnectCallback), null);
-            }
-            catch (Exception e)
-            {
-                Logging.LogUsefulException(e);
-                this.Close();
-            }
+            this.HandshakeReceive();
         }
 
         private void CheckClose()
@@ -135,7 +135,7 @@ namespace Shadowsocks.Controller
                     remote.Shutdown(SocketShutdown.Both);
                     remote.Close();
                 }
-                catch (SocketException e)
+                catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
                 }
@@ -144,33 +144,14 @@ namespace Shadowsocks.Controller
             {
                 lock (decryptionLock)
                 {
-                    ((IDisposable)encryptor).Dispose();
+                    if (encryptor != null)
+                    {
+                        ((IDisposable)encryptor).Dispose();
+                    }
                 }
             }
         }
 
-        private void ConnectCallback(IAsyncResult ar)
-        {
-            if (closed)
-            {
-                return;
-            }
-            try
-            {
-                // Complete the connection.
-                remote.EndConnect(ar);
-
-                //Console.WriteLine("Socket connected to {0}",
-                //    remote.RemoteEndPoint.ToString());
-
-                HandshakeReceive();
-            }
-            catch (Exception e)
-            {
-                Logging.LogUsefulException(e);
-                this.Close();
-            }
-        }
 
         private void HandshakeReceive()
         {
@@ -241,11 +222,19 @@ namespace Shadowsocks.Controller
             try
             {
                 int bytesRead = connection.EndReceive(ar);
-
-                if (bytesRead > 0)
+                
+                if (bytesRead >= 3)
                 {
-                    byte[] response = { 5, 0, 0, 1, 0, 0, 0, 0, 0, 0 };
-                    connection.BeginSend(response, 0, response.Length, 0, new AsyncCallback(StartPipe), null);
+                    command = connetionRecvBuffer[1];
+                    if (command == 1)
+                    {
+                        byte[] response = { 5, 0, 0, 1, 0, 0, 0, 0, 0, 0 };
+                        connection.BeginSend(response, 0, response.Length, 0, new AsyncCallback(ResponseCallback), null);
+                    }
+                    else if (command == 3)
+                    {
+                        HandleUDPAssociate();
+                    }
                 }
                 else
                 {
@@ -260,8 +249,210 @@ namespace Shadowsocks.Controller
             }
         }
 
+        private void HandleUDPAssociate()
+        {
+            IPEndPoint endPoint = (IPEndPoint)connection.LocalEndPoint;
+            byte[] address = endPoint.Address.GetAddressBytes();
+            int port = endPoint.Port;
+            byte[] response = new byte[4 + address.Length + 2];
+            response[0] = 5;
+            if (endPoint.AddressFamily == AddressFamily.InterNetwork)
+            {
+                response[3] = 1;
+            }
+            else if (endPoint.AddressFamily == AddressFamily.InterNetworkV6)
+            {
+                response[3] = 4;
+            }
+            address.CopyTo(response, 4);
+            response[response.Length - 1] = (byte)(port & 0xFF);
+            response[response.Length - 2] = (byte)((port >> 8) & 0xFF);
+            connection.BeginSend(response, 0, response.Length, 0, new AsyncCallback(ReadAll), true);
+        }
 
-        private void StartPipe(IAsyncResult ar)
+        private void ReadAll(IAsyncResult ar)
+        {
+
+            if (closed)
+            {
+                return;
+            }
+            try
+            {
+                if (ar.AsyncState != null)
+                {
+                    connection.EndSend(ar);
+                    connection.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0,
+                        new AsyncCallback(ReadAll), null);
+                }
+                else
+                {
+                    int bytesRead = connection.EndReceive(ar);
+                    if (bytesRead > 0)
+                    {
+                        connection.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0,
+                            new AsyncCallback(ReadAll), null);
+                    }
+                    else
+                    {
+                        this.Close();
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                Logging.LogUsefulException(e);
+                this.Close();
+            }
+        }
+
+        private void ResponseCallback(IAsyncResult ar)
+        {
+            try
+            {
+                connection.EndSend(ar);
+
+                StartConnect();
+            }
+
+            catch (Exception e)
+            {
+                Logging.LogUsefulException(e);
+                this.Close();
+            }
+        }
+
+        private class ServerTimer : Timer
+        {
+            public Server Server;
+
+            public ServerTimer(int p) :base(p)
+            {
+            }
+        }
+
+        private void StartConnect()
+        {
+            try
+            {
+                CreateRemote();
+
+                // TODO async resolving
+                IPAddress ipAddress;
+                bool parsed = IPAddress.TryParse(server.server, out ipAddress);
+                if (!parsed)
+                {
+                    IPHostEntry ipHostInfo = Dns.GetHostEntry(server.server);
+                    ipAddress = ipHostInfo.AddressList[0];
+                }
+                IPEndPoint remoteEP = new IPEndPoint(ipAddress, server.server_port);
+
+
+                remote = new Socket(ipAddress.AddressFamily,
+                    SocketType.Stream, ProtocolType.Tcp);
+                remote.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
+
+                _startConnectTime = DateTime.Now;
+                ServerTimer connectTimer = new ServerTimer(3000);
+                connectTimer.AutoReset = false;
+                connectTimer.Elapsed += connectTimer_Elapsed;
+                connectTimer.Enabled = true;
+                connectTimer.Server = server;
+
+                connected = false;
+                // Connect to the remote endpoint.
+                remote.BeginConnect(remoteEP,
+                    new AsyncCallback(ConnectCallback), connectTimer);
+            }
+            catch (Exception e)
+            {
+                Logging.LogUsefulException(e);
+                this.Close();
+            }
+        }
+
+        private void connectTimer_Elapsed(object sender, ElapsedEventArgs e)
+        {
+            if (connected)
+            {
+                return;
+            }
+            Server server = ((ServerTimer)sender).Server;
+            IStrategy strategy = controller.GetCurrentStrategy();
+            if (strategy != null)
+            {
+                strategy.SetFailure(server);
+            }
+            Console.WriteLine(String.Format("{0} timed out", server.FriendlyName()));
+            remote.Close();
+            RetryConnect();
+        }
+
+        private void RetryConnect()
+        {
+            if (retryCount < 4)
+            {
+                Logging.Debug("Connection failed, retrying");
+                StartConnect();
+                retryCount++;
+            }
+            else
+            {
+                this.Close();
+            }
+        }
+
+        private void ConnectCallback(IAsyncResult ar)
+        {
+            Server server = null;
+            if (closed)
+            {
+                return;
+            }
+            try
+            {
+                ServerTimer timer = (ServerTimer)ar.AsyncState;
+                server = timer.Server;
+                timer.Elapsed -= connectTimer_Elapsed;
+                timer.Enabled = false;
+                timer.Dispose();
+
+                // Complete the connection.
+                remote.EndConnect(ar);
+
+                connected = true;
+
+                //Console.WriteLine("Socket connected to {0}",
+                //    remote.RemoteEndPoint.ToString());
+
+                var latency = DateTime.Now - _startConnectTime;
+                IStrategy strategy = controller.GetCurrentStrategy();
+                if (strategy != null)
+                {
+                    strategy.UpdateLatency(server, latency);
+                }
+
+                StartPipe();
+            }
+            catch (ArgumentException)
+            {
+            }
+            catch (Exception e)
+            {
+                if (server != null)
+                {
+                    IStrategy strategy = controller.GetCurrentStrategy();
+                    if (strategy != null)
+                    {
+                        strategy.SetFailure(server);
+                    }
+                }
+                Logging.LogUsefulException(e);
+                RetryConnect();
+            }
+        }
+
+        private void StartPipe()
         {
             if (closed)
             {
@@ -269,7 +460,6 @@ namespace Shadowsocks.Controller
             }
             try
             {
-                connection.EndReceive(ar);
                 remote.BeginReceive(remoteRecvBuffer, 0, RecvSize, 0,
                     new AsyncCallback(PipeRemoteReceiveCallback), null);
                 connection.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0,
@@ -291,6 +481,7 @@ namespace Shadowsocks.Controller
             try
             {
                 int bytesRead = remote.EndReceive(ar);
+                totalRead += bytesRead;
 
                 if (bytesRead > 0)
                 {
@@ -304,6 +495,12 @@ namespace Shadowsocks.Controller
                         encryptor.Decrypt(remoteRecvBuffer, bytesRead, remoteSendBuffer, out bytesToSend);
                     }
                     connection.BeginSend(remoteSendBuffer, 0, bytesToSend, 0, new AsyncCallback(PipeConnectionSendCallback), null);
+
+                    IStrategy strategy = controller.GetCurrentStrategy();
+                    if (strategy != null)
+                    {
+                        strategy.UpdateLastRead(this.server);
+                    }
                 }
                 else
                 {
@@ -311,6 +508,13 @@ namespace Shadowsocks.Controller
                     connection.Shutdown(SocketShutdown.Send);
                     connectionShutdown = true;
                     CheckClose();
+
+                    if (totalRead == 0)
+                    {
+                        // closed before anything received, reports as failure
+                        // disable this feature
+                        // controller.GetCurrentStrategy().SetFailure(this.server);
+                    }
                 }
             }
             catch (Exception e)
@@ -329,6 +533,7 @@ namespace Shadowsocks.Controller
             try
             {
                 int bytesRead = connection.EndReceive(ar);
+                totalWrite += bytesRead;
 
                 if (bytesRead > 0)
                 {
@@ -342,6 +547,13 @@ namespace Shadowsocks.Controller
                         encryptor.Encrypt(connetionRecvBuffer, bytesRead, connetionSendBuffer, out bytesToSend);
                     }
                     remote.BeginSend(connetionSendBuffer, 0, bytesToSend, 0, new AsyncCallback(PipeRemoteSendCallback), null);
+
+
+                    IStrategy strategy = controller.GetCurrentStrategy();
+                    if (strategy != null)
+                    {
+                        strategy.UpdateLastWrite(this.server);
+                    }
                 }
                 else
                 {

shadowsocks-csharp/Controller/Service/UDPRelay.cs

@@ -0,0 +1,200 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Shadowsocks.Encryption;
+using Shadowsocks.Model;
+using System.Net.Sockets;
+using System.Net;
+using System.Runtime.CompilerServices;
+using Shadowsocks.Controller.Strategy;
+
+namespace Shadowsocks.Controller
+{
+    class UDPRelay : Listener.Service
+    {
+        private ShadowsocksController _controller;
+        private LRUCache<IPEndPoint, UDPHandler> _cache;
+        public UDPRelay(ShadowsocksController controller)
+        {
+            this._controller = controller;
+            this._cache = new LRUCache<IPEndPoint, UDPHandler>(512);  // todo: choose a smart number
+        }
+
+        public bool Handle(byte[] firstPacket, int length, Socket socket, object state)
+        {
+            if (socket.ProtocolType != ProtocolType.Udp)
+            {
+                return false;
+            }
+            if (length < 4)
+            {
+                return false;
+            }
+            Listener.UDPState udpState = (Listener.UDPState)state;
+            IPEndPoint remoteEndPoint = (IPEndPoint)udpState.remoteEndPoint;
+            UDPHandler handler = _cache.get(remoteEndPoint);
+            if (handler == null)
+            {
+                handler = new UDPHandler(socket, _controller.GetAServer(IStrategyCallerType.UDP, remoteEndPoint), remoteEndPoint);
+                _cache.add(remoteEndPoint, handler);
+            }
+            handler.Send(firstPacket, length);
+            handler.Receive();
+            return true;
+        }
+
+        public class UDPHandler
+        {
+            private Socket _local;
+            private Socket _remote;
+
+            private Server _server;
+            private byte[] _buffer = new byte[1500];
+
+            private IPEndPoint _localEndPoint;
+            private IPEndPoint _remoteEndPoint;
+
+            public UDPHandler(Socket local, Server server, IPEndPoint localEndPoint)
+            {
+                _local = local;
+                _server = server;
+                _localEndPoint = localEndPoint;
+
+                // TODO async resolving
+                IPAddress ipAddress;
+                bool parsed = IPAddress.TryParse(server.server, out ipAddress);
+                if (!parsed)
+                {
+                    IPHostEntry ipHostInfo = Dns.GetHostEntry(server.server);
+                    ipAddress = ipHostInfo.AddressList[0];
+                }
+                _remoteEndPoint = new IPEndPoint(ipAddress, server.server_port);
+                _remote = new Socket(_remoteEndPoint.AddressFamily, SocketType.Dgram, ProtocolType.Udp);
+
+            }
+            public void Send(byte[] data, int length)
+            {
+                IEncryptor encryptor = EncryptorFactory.GetEncryptor(_server.method, _server.password);
+                byte[] dataIn = new byte[length - 3];
+                Array.Copy(data, 3, dataIn, 0, length - 3);
+                byte[] dataOut = new byte[length - 3 + 16];
+                int outlen;
+                encryptor.Encrypt(dataIn, dataIn.Length, dataOut, out outlen);
+                _remote.SendTo(dataOut, _remoteEndPoint);
+            }
+            public void Receive()
+            {
+                EndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
+                _remote.BeginReceiveFrom(_buffer, 0, _buffer.Length, 0, ref remoteEndPoint, new AsyncCallback(RecvFromCallback), null);
+            }
+            public void RecvFromCallback(IAsyncResult ar)
+            {
+                try
+                {
+                    EndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
+                    int bytesRead = _remote.EndReceiveFrom(ar, ref remoteEndPoint);
+
+                    byte[] dataOut = new byte[bytesRead];
+                    int outlen;
+
+                    IEncryptor encryptor = EncryptorFactory.GetEncryptor(_server.method, _server.password);
+                    encryptor.Decrypt(_buffer, bytesRead, dataOut, out outlen);
+
+                    byte[] sendBuf = new byte[outlen + 3];
+                    Array.Copy(dataOut, 0, sendBuf, 3, outlen);
+
+                    _local.SendTo(sendBuf, outlen + 3, 0, _localEndPoint);
+                    Receive();
+                }
+                catch (ObjectDisposedException)
+                {
+                }
+                catch (Exception)
+                {
+                }
+                finally
+                {
+                }
+            }
+            public void Close()
+            {
+                try
+                {
+                    _remote.Close();
+                }
+                catch (ObjectDisposedException)
+                {
+                }
+                catch (Exception)
+                {
+                }
+                finally
+                {
+                }
+            }
+        }
+    }
+    // cc by-sa 3.0 http://stackoverflow.com/a/3719378/1124054
+    class LRUCache<K, V> where V : UDPRelay.UDPHandler
+    {
+        private int capacity;
+        private Dictionary<K, LinkedListNode<LRUCacheItem<K, V>>> cacheMap = new Dictionary<K, LinkedListNode<LRUCacheItem<K, V>>>();
+        private LinkedList<LRUCacheItem<K, V>> lruList = new LinkedList<LRUCacheItem<K, V>>();
+
+        public LRUCache(int capacity)
+        {
+            this.capacity = capacity;
+        }
+
+        [MethodImpl(MethodImplOptions.Synchronized)]
+        public V get(K key)
+        {
+            LinkedListNode<LRUCacheItem<K, V>> node;
+            if (cacheMap.TryGetValue(key, out node))
+            {
+                V value = node.Value.value;
+                lruList.Remove(node);
+                lruList.AddLast(node);
+                return value;
+            }
+            return default(V);
+        }
+
+        [MethodImpl(MethodImplOptions.Synchronized)]
+        public void add(K key, V val)
+        {
+            if (cacheMap.Count >= capacity)
+            {
+                RemoveFirst();
+            }
+
+            LRUCacheItem<K, V> cacheItem = new LRUCacheItem<K, V>(key, val);
+            LinkedListNode<LRUCacheItem<K, V>> node = new LinkedListNode<LRUCacheItem<K, V>>(cacheItem);
+            lruList.AddLast(node);
+            cacheMap.Add(key, node);
+        }
+
+        private void RemoveFirst()
+        {
+            // Remove from LRUPriority
+            LinkedListNode<LRUCacheItem<K, V>> node = lruList.First;
+            lruList.RemoveFirst();
+
+            // Remove from cache
+            cacheMap.Remove(node.Value.key);
+            node.Value.value.Close();
+        }
+    }
+
+    class LRUCacheItem<K, V>
+    {
+        public LRUCacheItem(K k, V v)
+        {
+            key = k;
+            value = v;
+        }
+        public K key;
+        public V value;
+    }
+
+}

shadowsocks-csharp/Controller/Service/UpdateChecker.cs

@@ -6,24 +6,25 @@ using System.Net;
 using System.Reflection;
 using System.Text;
 using System.Text.RegularExpressions;
-using System.Xml;
+using SimpleJson;
 
 namespace Shadowsocks.Controller
 {
     public class UpdateChecker
     {
-        private const string UpdateURL = "https://sourceforge.net/api/file/index/project-id/1817190/path/dist/mtime/desc/limit/10/rss";
+        private const string UpdateURL = "https://api.github.com/repos/shadowsocks/shadowsocks-csharp/releases";
 
         public string LatestVersionNumber;
         public string LatestVersionURL;
         public event EventHandler NewVersionFound;
 
-        public const string Version = "2.3.1";
+        public const string Version = "2.5.4";
 
         public void CheckUpdate(Configuration config)
         {
             // TODO test failures
             WebClient http = new WebClient();
+            http.Headers.Add("User-Agent", "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.3319.102 Safari/537.36");
             http.Proxy = new WebProxy(IPAddress.Loopback.ToString(), config.localPort);
             http.DownloadStringCompleted += http_DownloadStringCompleted;
             http.DownloadStringAsync(new Uri(UpdateURL));
@@ -79,30 +80,6 @@ namespace Shadowsocks.Controller
             {
                 return false;
             }
-            // check dotnet 4.0
-            AssemblyName[] references = Assembly.GetExecutingAssembly().GetReferencedAssemblies();
-            Version dotNetVersion = Environment.Version;
-            foreach (AssemblyName reference in references)
-            {
-                if (reference.Name == "mscorlib")
-                {
-                    dotNetVersion = reference.Version;
-                }
-            }
-            if (dotNetVersion.Major >= 4)
-            {
-                if (url.IndexOf("dotnet4.0") < 0)
-                {
-                    return false;
-                }
-            }
-            else
-            {
-                if (url.IndexOf("dotnet4.0") >= 0)
-                {
-                    return false;
-                }
-            }
             string version = ParseVersionFromURL(url);
             if (version == null)
             {
@@ -119,23 +96,25 @@ namespace Shadowsocks.Controller
             {
                 string response = e.Result;
 
-                XmlDocument xmlDoc = new XmlDocument();
-                xmlDoc.LoadXml(response);
-                XmlNodeList elements = xmlDoc.GetElementsByTagName("media:content");
+                JsonArray result = (JsonArray)SimpleJson.SimpleJson.DeserializeObject(e.Result);
+
                 List<string> versions = new List<string>();
-                foreach (XmlNode el in elements)
+                foreach (JsonObject release in result)
                 {
-                    foreach (XmlAttribute attr in el.Attributes)
+                    if ((bool)release["prerelease"])
                     {
-                        if (attr.Name == "url")
+                        continue;
+                    }
+                    foreach (JsonObject asset in (JsonArray)release["assets"])
+                    {
+                        string url = (string)asset["browser_download_url"];
+                        if (IsNewVersion(url))
                         {
-                            if (IsNewVersion(attr.Value))
-                            {
-                                versions.Add(attr.Value);
-                            }
+                            versions.Add(url);
                         }
                     }
                 }
+
                 if (versions.Count == 0)
                 {
                     return;
@@ -151,7 +130,7 @@ namespace Shadowsocks.Controller
             }
             catch (Exception ex)
             {
-                Console.WriteLine(ex.ToString());
+                Logging.Debug(ex.ToString());
                 return;
             }
         }

shadowsocks-csharp/Controller/ShadowsocksController.cs

@@ -5,6 +5,8 @@ using System.Collections.Generic;
 using System.Text;
 using System.Threading;
 using System.Net.Sockets;
+using Shadowsocks.Controller.Strategy;
+using System.Net;
 
 namespace Shadowsocks.Controller
 {
@@ -20,8 +22,10 @@ namespace Shadowsocks.Controller
         private Listener _listener;
         private PACServer _pacServer;
         private Configuration _config;
+        private StrategyManager _strategyManager;
         private PolipoRunner polipoRunner;
         private GFWListUpdater gfwListUpdater;
+        private AvailabilityStatistics _availabilityStatics;
         private bool stopped = false;
 
         private bool _systemProxyIsDirty = false;
@@ -49,6 +53,8 @@ namespace Shadowsocks.Controller
         public ShadowsocksController()
         {
             _config = Configuration.Load();
+            _strategyManager = new StrategyManager(this);
+            StartReleasingMemory();
         }
 
         public void Start()
@@ -70,11 +76,48 @@ namespace Shadowsocks.Controller
         }
 
         // always return copy
-        public Configuration GetConfiguration()
+        public Configuration GetConfigurationCopy()
         {
             return Configuration.Load();
         }
 
+        // always return current instance
+        public Configuration GetCurrentConfiguration()
+        {
+            return _config;
+        }
+
+        public IList<IStrategy> GetStrategies()
+        {
+            return _strategyManager.GetStrategies();
+        }
+
+        public IStrategy GetCurrentStrategy()
+        {
+            foreach (var strategy in _strategyManager.GetStrategies())
+            {
+                if (strategy.ID == this._config.strategy)
+                {
+                    return strategy;
+                }
+            }
+            return null;
+        }
+
+        public Server GetAServer(IStrategyCallerType type, IPEndPoint localIPEndPoint)
+        {
+            IStrategy strategy = GetCurrentStrategy();
+            if (strategy != null)
+            {
+                return strategy.GetAServer(type, localIPEndPoint);
+            }
+            if (_config.index < 0)
+            {
+                _config.index = 0;
+            }
+            return GetCurrentServer();
+        }
+
         public void SaveServers(List<Server> servers, int localPort)
         {
             _config.configs = servers;
@@ -134,6 +177,14 @@ namespace Shadowsocks.Controller
         public void SelectServerIndex(int index)
         {
             _config.index = index;
+            _config.strategy = null;
+            SaveConfig(_config);
+        }
+
+        public void SelectStrategy(string strategyID)
+        {
+            _config.index = -1;
+            _config.strategy = strategyID;
             SaveConfig(_config);
         }
 
@@ -179,6 +230,11 @@ namespace Shadowsocks.Controller
         public string GetQRCodeForCurrentServer()
         {
             Server server = GetCurrentServer();
+            return GetQRCode(server);
+        }
+
+        public static string GetQRCode(Server server)
+        {
             string parts = server.method + ":" + server.password + "@" + server.server + ":" + server.server_port;
             string base64 = System.Convert.ToBase64String(Encoding.UTF8.GetBytes(parts));
             return "ss://" + base64;
@@ -192,6 +248,38 @@ namespace Shadowsocks.Controller
             }
         }
 
+        public void ToggleAvailabilityStatistics(bool enabled)
+        {
+            if (_availabilityStatics != null)
+            {
+                _availabilityStatics.Set(enabled);
+                _config.availabilityStatistics = enabled;
+                SaveConfig(_config);
+            }
+        }
+
+        public void SavePACUrl(string pacUrl)
+        {
+            _config.pacUrl = pacUrl;
+            UpdateSystemProxy();
+            SaveConfig(_config);
+            if (ConfigChanged != null)
+            {
+                ConfigChanged(this, new EventArgs());
+            }
+        }
+
+        public void UseOnlinePAC(bool useOnlinePac)
+        {
+            _config.useOnlinePac = useOnlinePac;
+            UpdateSystemProxy();
+            SaveConfig(_config);
+            if (ConfigChanged != null)
+            {
+                ConfigChanged(this, new EventArgs());
+            }
+        }
+
         protected void Reload()
         {
             // some logic in configuration updated the config when saving, we need to read it again
@@ -219,6 +307,12 @@ namespace Shadowsocks.Controller
                 _listener.Stop();
             }
 
+            if (_availabilityStatics == null)
+            {
+                _availabilityStatics = new AvailabilityStatistics();
+                _availabilityStatics.UpdateConfiguration(_config);
+            }
+
             // don't put polipoRunner.Start() before pacServer.Stop()
             // or bind will fail when switching bind address from 0.0.0.0 to 127.0.0.1
             // though UseShellExecute is set to true now
@@ -226,11 +320,19 @@ namespace Shadowsocks.Controller
             polipoRunner.Stop();
             try
             {
+                var strategy = GetCurrentStrategy();
+                if (strategy != null)
+                {
+                    strategy.ReloadServers();
+                }
+
                 polipoRunner.Start(_config);
 
-                Local local = new Local(_config);
+                TCPRelay tcpRelay = new TCPRelay(this);
+                UDPRelay udpRelay = new UDPRelay(this);
                 List<Listener.Service> services = new List<Listener.Service>();
-                services.Add(local);
+                services.Add(tcpRelay);
+                services.Add(udpRelay);
                 services.Add(_pacServer);
                 services.Add(new PortForwarder(polipoRunner.RunningPort));
                 _listener = new Listener(services);

shadowsocks-csharp/Controller/Strategy/BalancingStrategy.cs

@@ -0,0 +1,71 @@
+using Shadowsocks.Controller;
+using Shadowsocks.Model;
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Text;
+
+namespace Shadowsocks.Controller.Strategy
+{
+    class BalancingStrategy : IStrategy
+    {
+        ShadowsocksController _controller;
+        Random _random;
+
+        public BalancingStrategy(ShadowsocksController controller)
+        {
+            _controller = controller;
+            _random = new Random();
+        }
+
+        public string Name
+        {
+            get { return I18N.GetString("Load Balance"); }
+        }
+
+        public string ID
+        {
+            get { return "com.shadowsocks.strategy.balancing"; }
+        }
+
+        public void ReloadServers()
+        {
+            // do nothing
+        }
+
+        public Server GetAServer(IStrategyCallerType type, IPEndPoint localIPEndPoint)
+        {
+            var configs = _controller.GetCurrentConfiguration().configs;
+            int index;
+            if (type == IStrategyCallerType.TCP)
+            {
+                index = _random.Next();
+            }
+            else
+            {
+                index = localIPEndPoint.GetHashCode();
+            }
+            return configs[index % configs.Count];
+        }
+
+        public void UpdateLatency(Model.Server server, TimeSpan latency)
+        {
+            // do nothing
+        }
+
+        public void UpdateLastRead(Model.Server server)
+        {
+            // do nothing
+        }
+
+        public void UpdateLastWrite(Model.Server server)
+        {
+            // do nothing
+        }
+
+        public void SetFailure(Model.Server server)
+        {
+            // do nothing
+        }
+    }
+}

shadowsocks-csharp/Controller/Strategy/HighAvailabilityStrategy.cs

@@ -0,0 +1,185 @@
+using Shadowsocks.Model;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Shadowsocks.Controller.Strategy
+{
+    class HighAvailabilityStrategy : IStrategy
+    {
+        protected ServerStatus _currentServer;
+        protected Dictionary<Server, ServerStatus> _serverStatus;
+        ShadowsocksController _controller;
+        Random _random;
+
+        public class ServerStatus
+        {
+            // time interval between SYN and SYN+ACK
+            public TimeSpan latency;
+            public DateTime lastTimeDetectLatency;
+
+            // last time anything received
+            public DateTime lastRead;
+
+            // last time anything sent
+            public DateTime lastWrite;
+
+            // connection refused or closed before anything received
+            public DateTime lastFailure;
+
+            public Server server;
+
+            public double score;
+        }
+
+        public HighAvailabilityStrategy(ShadowsocksController controller)
+        {
+            _controller = controller;
+            _random = new Random();
+            _serverStatus = new Dictionary<Server, ServerStatus>();
+        }
+
+        public string Name
+        {
+            get { return I18N.GetString("High Availability"); }
+        }
+
+        public string ID
+        {
+            get { return "com.shadowsocks.strategy.ha"; }
+        }
+
+        public void ReloadServers()
+        {
+            // make a copy to avoid locking
+            var newServerStatus = new Dictionary<Server, ServerStatus>(_serverStatus);
+
+            foreach (var server in _controller.GetCurrentConfiguration().configs)
+            {
+                if (!newServerStatus.ContainsKey(server))
+                {
+                    var status = new ServerStatus();
+                    status.server = server;
+                    status.lastFailure = DateTime.MinValue;
+                    status.lastRead = DateTime.Now;
+                    status.lastWrite = DateTime.Now;
+                    status.latency = new TimeSpan(0, 0, 0, 0, 10);
+                    status.lastTimeDetectLatency = DateTime.Now;
+                    newServerStatus[server] = status;
+                }
+                else
+                {
+                    // update settings for existing server
+                    newServerStatus[server].server = server;
+                }
+            }
+            _serverStatus = newServerStatus;
+
+            ChooseNewServer();
+        }
+
+        public Server GetAServer(IStrategyCallerType type, System.Net.IPEndPoint localIPEndPoint)
+        {
+            if (type == IStrategyCallerType.TCP)
+            {
+                ChooseNewServer();
+            }
+            if (_currentServer == null)
+            {
+                return null;
+            }
+            return _currentServer.server;
+        }
+
+        /**
+         * once failed, try after 5 min
+         * and (last write - last read) < 5s
+         * and (now - last read) <  5s  // means not stuck
+         * and latency < 200ms, try after 30s
+         */
+        public void ChooseNewServer()
+        {
+            ServerStatus oldServer = _currentServer;
+            List<ServerStatus> servers = new List<ServerStatus>(_serverStatus.Values);
+            DateTime now = DateTime.Now;
+            foreach (var status in servers)
+            {
+                // all of failure, latency, (lastread - lastwrite) normalized to 1000, then
+                // 100 * failure - 2 * latency - 0.5 * (lastread - lastwrite)
+                status.score =
+                    100 * 1000 * Math.Min(5 * 60, (now - status.lastFailure).TotalSeconds)
+                    -2 * 5 * (Math.Min(2000, status.latency.TotalMilliseconds) / (1 + (now - status.lastTimeDetectLatency).TotalSeconds / 30 / 10) +
+                    -0.5 * 200 * Math.Min(5, (status.lastRead - status.lastWrite).TotalSeconds));
+                Logging.Debug(String.Format("server: {0} latency:{1} score: {2}", status.server.FriendlyName(), status.latency, status.score));
+            }
+            ServerStatus max = null;
+            foreach (var status in servers)
+            {
+                if (max == null)
+                {
+                    max = status;
+                }
+                else
+                {
+                    if (status.score >= max.score)
+                    {
+                        max = status;
+                    }
+                }
+            }
+            if (max != null)
+            {
+                if (_currentServer == null || max.score - _currentServer.score > 200)
+                {
+                    _currentServer = max;
+                    Console.WriteLine("HA switching to server: {0}", _currentServer.server.FriendlyName());
+                }
+            }
+        }
+
+        public void UpdateLatency(Model.Server server, TimeSpan latency)
+        {
+            Logging.Debug(String.Format("latency: {0} {1}", server.FriendlyName(), latency));
+
+            ServerStatus status;
+            if (_serverStatus.TryGetValue(server, out status))
+            {
+                status.latency = latency;
+                status.lastTimeDetectLatency = DateTime.Now;
+            }
+        }
+
+        public void UpdateLastRead(Model.Server server)
+        {
+            Logging.Debug(String.Format("last read: {0}", server.FriendlyName()));
+
+            ServerStatus status;
+            if (_serverStatus.TryGetValue(server, out status))
+            {
+                status.lastRead = DateTime.Now;
+            }
+        }
+
+        public void UpdateLastWrite(Model.Server server)
+        {
+            Logging.Debug(String.Format("last write: {0}", server.FriendlyName()));
+
+            ServerStatus status;
+            if (_serverStatus.TryGetValue(server, out status))
+            {
+                status.lastWrite = DateTime.Now;
+            }
+        }
+
+        public void SetFailure(Model.Server server)
+        {
+            Logging.Debug(String.Format("failure: {0}", server.FriendlyName()));
+
+            ServerStatus status;
+            if (_serverStatus.TryGetValue(server, out status))
+            {
+                status.lastFailure = DateTime.Now;
+            }
+        }
+    }
+}

shadowsocks-csharp/Controller/Strategy/IStrategy.cs

@@ -0,0 +1,56 @@
+using Shadowsocks.Model;
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Text;
+
+namespace Shadowsocks.Controller.Strategy
+{
+    public enum IStrategyCallerType
+    {
+        TCP,
+        UDP
+    }
+
+    /*
+     * IStrategy
+     * 
+     * Subclasses must be thread-safe
+     */
+    public interface IStrategy
+    {
+        string Name { get; }
+        
+        string ID { get; }
+
+        /*
+         * Called when servers need to be reloaded, i.e. new configuration saved 
+         */
+        void ReloadServers();
+
+        /*
+         * Get a new server to use in TCPRelay or UDPRelay
+         */
+        Server GetAServer(IStrategyCallerType type, IPEndPoint localIPEndPoint);
+
+        /*
+         * TCPRelay will call this when latency of a server detected
+         */
+        void UpdateLatency(Server server, TimeSpan latency);
+
+        /*
+         * TCPRelay will call this when reading from a server
+         */
+        void UpdateLastRead(Server server);
+
+        /*
+         * TCPRelay will call this when writing to a server
+         */
+        void UpdateLastWrite(Server server);
+
+        /*
+         * TCPRelay will call this when fatal failure detected
+         */
+        void SetFailure(Server server);
+    }
+}

shadowsocks-csharp/Controller/Strategy/SimplyChooseByStatisticsStrategy.cs

@@ -0,0 +1,176 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Text;
+using Shadowsocks.Model;
+using System.IO;
+using System.Net.NetworkInformation;
+using System.Threading;
+
+namespace Shadowsocks.Controller.Strategy
+{
+    class SimplyChooseByStatisticsStrategy : IStrategy
+    {
+        private ShadowsocksController _controller;
+        private Server _currentServer;
+        private Timer timer;
+        private Dictionary<string, StatisticsData> statistics;
+        private static readonly int CachedInterval = 30 * 60 * 1000; //choose a new server every 30 minutes
+
+        public SimplyChooseByStatisticsStrategy(ShadowsocksController controller)
+        {
+            _controller = controller;
+            var servers = controller.GetCurrentConfiguration().configs;
+            int randomIndex = new Random().Next() % servers.Count();
+            _currentServer = servers[randomIndex];  //choose a server randomly at first
+            timer = new Timer(ReloadStatisticsAndChooseAServer);
+        }
+
+        private void ReloadStatisticsAndChooseAServer(object obj)
+        {
+            Logging.Debug("Reloading statistics and choose a new server....");
+            List<Server> servers = _controller.GetCurrentConfiguration().configs;
+            LoadStatistics();
+            ChooseNewServer(servers);
+        }
+
+        /*
+        return a dict:
+        {
+            'ServerFriendlyName1':StatisticsData,
+            'ServerFriendlyName2':...
+        }
+        */
+        private void LoadStatistics()
+        {
+            try
+            {
+                var path = AvailabilityStatistics.AvailabilityStatisticsFile;
+                Logging.Debug(string.Format("loading statistics from{0}", path));
+                statistics = (from l in File.ReadAllLines(path)
+                                  .Skip(1)
+                                  let strings = l.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries)
+                                  let rawData = new
+                                  {
+                                      ServerName = strings[1],
+                                      IPStatus = strings[2],
+                                      RoundtripTime = int.Parse(strings[3])
+                                  }
+                                  group rawData by rawData.ServerName into server
+                                  select new
+                                  {
+                                      ServerName = server.Key,
+                                      data = new StatisticsData
+                                      {
+                                          SuccessTimes = server.Count(data => IPStatus.Success.ToString().Equals(data.IPStatus)),
+                                          TimedOutTimes = server.Count(data => IPStatus.TimedOut.ToString().Equals(data.IPStatus)),
+                                          AverageResponse = Convert.ToInt32(server.Average(data => data.RoundtripTime)),
+                                          MinResponse = server.Min(data => data.RoundtripTime),
+                                          MaxResponse = server.Max(data => data.RoundtripTime)
+                                      }
+                                  }).ToDictionary(server => server.ServerName, server => server.data);
+            }
+            catch (Exception e)
+            {
+                Logging.LogUsefulException(e);
+            }
+        }
+
+        //return the score by data
+        //server with highest score will be choosen
+        private static double GetScore(StatisticsData data)
+        {
+            return (double)data.SuccessTimes / (data.SuccessTimes + data.TimedOutTimes); //simply choose min package loss
+        }
+
+        private class StatisticsData
+        {
+            public int SuccessTimes;
+            public int TimedOutTimes;
+            public int AverageResponse;
+            public int MinResponse;
+            public int MaxResponse;
+        }
+
+        private void ChooseNewServer(List<Server> servers)
+        {
+            if (statistics == null)
+            {
+                return;
+            }
+            try
+            {
+                var bestResult = (from server in servers
+                                  let name = server.FriendlyName()
+                                  where statistics.ContainsKey(name)
+                                  select new
+                                  {
+                                      server,
+                                      score = GetScore(statistics[name])
+                                  }
+                                  ).Aggregate((result1, result2) => result1.score > result2.score ? result1 : result2);
+
+                if (_controller.GetCurrentStrategy().ID == ID && _currentServer != bestResult.server) //output when enabled
+                {  
+                    Console.WriteLine("Switch to server: {0} by package loss:{1}", bestResult.server.FriendlyName(), 1 - bestResult.score);
+                }
+                _currentServer = bestResult.server;
+            }
+            catch (Exception e)
+            {
+                Logging.LogUsefulException(e);
+            }
+        }
+
+        public string ID
+        {
+            get { return "com.shadowsocks.strategy.scbs"; }
+        }
+
+        public string Name
+        {
+            get { return I18N.GetString("Choose By Total Package Loss"); }
+        }
+
+        public Server GetAServer(IStrategyCallerType type, IPEndPoint localIPEndPoint)
+        {
+            var oldServer = _currentServer;
+            if (oldServer == null)
+            {
+                ChooseNewServer(_controller.GetCurrentConfiguration().configs);
+            }
+            if (oldServer != _currentServer)
+            {
+            }
+            return _currentServer;  //current server cached for CachedInterval
+        }
+
+        public void ReloadServers()
+        {
+            ChooseNewServer(_controller.GetCurrentConfiguration().configs);
+            timer?.Change(0, CachedInterval);
+        }
+
+        public void SetFailure(Server server)
+        {
+            Logging.Debug(String.Format("failure: {0}", server.FriendlyName()));
+        }
+
+        public void UpdateLastRead(Server server)
+        {
+            //TODO: combine this part of data with ICMP statics
+        }
+
+        public void UpdateLastWrite(Server server)
+        {
+            //TODO: combine this part of data with ICMP statics
+        }
+
+        public void UpdateLatency(Server server, TimeSpan latency)
+        {
+            //TODO: combine this part of data with ICMP statics
+        }
+
+    }
+}

shadowsocks-csharp/Controller/Strategy/StrategyManager.cs

@@ -0,0 +1,24 @@
+using Shadowsocks.Controller;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Shadowsocks.Controller.Strategy
+{
+    class StrategyManager
+    {
+        List<IStrategy> _strategies;
+        public StrategyManager(ShadowsocksController controller)
+        {
+            _strategies = new List<IStrategy>();
+            _strategies.Add(new BalancingStrategy(controller));
+            _strategies.Add(new HighAvailabilityStrategy(controller));
+            _strategies.Add(new SimplyChooseByStatisticsStrategy(controller));
+            // TODO: load DLL plugins
+        }
+        public IList<IStrategy> GetStrategies()
+        {
+            return _strategies;
+        }
+    }
+}

shadowsocks-csharp/Controller/System/SystemProxy.cs

@@ -49,17 +49,29 @@ namespace Shadowsocks.Controller
                     }
                     else
                     {
+                        string pacUrl;
+                        if (config.useOnlinePac && !string.IsNullOrEmpty(config.pacUrl))
+                            pacUrl = config.pacUrl;
+                        else
+                            pacUrl = "http://127.0.0.1:" + config.localPort.ToString() + "/pac?t=" + GetTimestamp(DateTime.Now);
                         registry.SetValue("ProxyEnable", 0);
-                        registry.SetValue("ProxyServer", "");
-                        registry.SetValue("AutoConfigURL", "http://127.0.0.1:" + config.localPort.ToString() + "/pac?t=" + GetTimestamp(DateTime.Now));
+                        var readProxyServer = registry.GetValue("ProxyServer");
+                        if (readProxyServer != null && readProxyServer.Equals("127.0.0.1:" + config.localPort.ToString()))
+                            registry.SetValue("ProxyServer", "");
+                        registry.SetValue("AutoConfigURL", pacUrl);
                     }
                 }
                 else
                 {
                     registry.SetValue("ProxyEnable", 0);
-                    registry.SetValue("ProxyServer", "");
+                    if (global)
+                    {
+                        registry.SetValue("ProxyServer", "");
+                    }
                     registry.SetValue("AutoConfigURL", "");
                 }
+                //Set AutoDetectProxy Off
+                IEAutoDetectProxy(false);
                 SystemProxy.NotifyIE();
                 //Must Notify IE first, or the connections do not chanage
                 CopyProxySettingFromLan();
@@ -101,5 +113,30 @@ namespace Shadowsocks.Controller
         {
             return value.ToString("yyyyMMddHHmmssffff");
         }
+
+        /// <summary>
+        /// Checks or unchecks the IE Options Connection setting of "Automatically detect Proxy"
+        /// </summary>
+        /// <param name="set">Provide 'true' if you want to check the 'Automatically detect Proxy' check box. To uncheck, pass 'false'</param>
+        private static void IEAutoDetectProxy(bool set)
+        {
+            RegistryKey registry =
+                Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Connections",
+                    true);
+            byte[] defConnection = (byte[])registry.GetValue("DefaultConnectionSettings");
+            byte[] savedLegacySetting = (byte[])registry.GetValue("SavedLegacySettings");
+            if (set)
+            {
+                defConnection[8] = Convert.ToByte(defConnection[8] & 8);
+                savedLegacySetting[8] = Convert.ToByte(savedLegacySetting[8] & 8);
+            }
+            else
+            {
+                defConnection[8] = Convert.ToByte(defConnection[8] & ~8);
+                savedLegacySetting[8] = Convert.ToByte(savedLegacySetting[8] & ~8);
+            }
+            registry.SetValue("DefaultConnectionSettings", defConnection);
+            registry.SetValue("SavedLegacySettings", savedLegacySetting);
+        }
     }
 }

shadowsocks-csharp/Data/cn.txt

@@ -12,7 +12,10 @@ Servers=服务器
 Edit Servers...=编辑服务器...
 Start on Boot=开机启动
 Allow Clients from LAN=允许来自局域网的连接
-Edit PAC File...=编辑 PAC 文件...
+Local PAC=使用本地 PAC
+Online PAC=使用在线 PAC
+Edit Local PAC File...=编辑本地 PAC 文件...
+Update Local PAC from GFWList=从 GFWList 更新本地 PAC
 Edit User Rule for GFWList...=编辑 GFWList 的用户规则...
 Show QRCode...=显示二维码...
 Scan QRCode from Screen...=扫描屏幕上的二维码...
@@ -20,6 +23,9 @@ Show Logs...=显示日志...
 About...=关于...
 Quit=退出
 Edit Servers=编辑服务器
+Load Balance=负载均衡
+High Availability=高可用
+Choose By Total Package Loss=累计丢包率
 
 # Config Form
 
@@ -40,6 +46,12 @@ New server=未配置的服务器
 
 QRCode=二维码
 
+# PAC Url Form
+
+Edit Online PAC URL=编辑在线 PAC 网址
+Edit Online PAC URL...=编辑在线 PAC 网址...
+Please input PAC Url=请输入 PAC 网址
+
 # Messages
 
 Shadowsocks Error: {0}=Shadowsocks 错误: {0}
@@ -49,13 +61,13 @@ Please add at least one server=请添加至少一个服务器
 Server IP can not be blank=服务器 IP 不能为空
 Password can not be blank=密码不能为空
 Port out of range=端口超出范围
+Port can't be 8123=端口不能为 8123
 Shadowsocks {0} Update Found=Shadowsocks {0} 更新
 Click here to download=点击这里下载
 Shadowsocks is here=Shadowsocks 在这里
 You can turn on/off Shadowsocks in the context menu=可以在右键菜单中开关 Shadowsocks
 System Proxy Enabled=系统代理已启用
 System Proxy Disabled=系统代理未启用
-Update PAC from GFWList=从 GFWList 更新 PAC
 Failed to update PAC file =更新 PAC 文件失败
 PAC updated=更新 PAC 成功
 No updates found. Please report to GFWList if you have problems with it.=未发现更新。如有问题请提交给 GFWList。

shadowsocks-csharp/Data/polipo_config.txt

@@ -1,10 +0,0 @@
-proxyAddress = "__POLIPO_BIND_IP__"
-proxyPort = 8123
-
-socksParentProxy = "127.0.0.1:__SOCKS_PORT__"
-socksProxyType = socks5
-diskCacheRoot = ""
-localDocumentRoot = ""
-
-allowedPorts = 1-65535
-tunnelAllowedPorts = 1-65535

shadowsocks-csharp/Data/privoxy_conf.txt

@@ -0,0 +1,5 @@
+listen-address __POLIPO_BIND_IP__:8123
+show-on-task-bar 0
+activity-animation 0
+forward-socks5 / 127.0.0.1:__SOCKS_PORT__ .
+hide-console

shadowsocks-csharp/Model/Configuration.cs

@@ -11,12 +11,18 @@ namespace Shadowsocks.Model
     public class Configuration
     {
         public List<Server> configs;
+
+        // when strategy is set, index is ignored
+        public string strategy;
         public int index;
         public bool global;
         public bool enabled;
         public bool shareOverLan;
         public bool isDefault;
         public int localPort;
+        public string pacUrl;
+        public bool useOnlinePac;
+        public bool availabilityStatistics;
 
         private static string CONFIG_FILE = "gui-config.json";
 
@@ -50,6 +56,13 @@ namespace Shadowsocks.Model
                 {
                     config.localPort = 1080;
                 }
+                if (config.index == -1)
+                {
+                    if (config.strategy == null)
+                    {
+                        config.index = 0;
+                    }
+                }
                 return config;
             }
             catch (Exception e)
@@ -77,9 +90,16 @@ namespace Shadowsocks.Model
             {
                 config.index = config.configs.Count - 1;
             }
-            if (config.index < 0)
+            if (config.index < -1)
             {
-                config.index = 0;
+                config.index = -1;
+            }
+            if (config.index == -1)
+            {
+                if (config.strategy == null)
+                {
+                    config.index = 0;
+                }
             }
             config.isDefault = false;
             try
@@ -118,6 +138,15 @@ namespace Shadowsocks.Model
             }
         }
 
+        public static void CheckLocalPort(int port)
+        {
+            CheckPort(port);
+            if (port == 8123)
+            {
+                throw new ArgumentException(I18N.GetString("Port can't be 8123"));
+            }
+        }
+
         private static void CheckPassword(string password)
         {
             if (string.IsNullOrEmpty(password))

shadowsocks-csharp/Model/Server.cs

@@ -18,6 +18,17 @@ namespace Shadowsocks.Model
         public string method;
         public string remarks;
 
+        public override int GetHashCode()
+        {
+            return server.GetHashCode() ^ server_port;
+        }
+
+        public override bool Equals(object obj)
+        {
+            Server o2 = (Server)obj;
+            return this.server == o2.server && this.server_port == o2.server_port;
+        }
+
         public string FriendlyName()
         {
             if (string.IsNullOrEmpty(server))

shadowsocks-csharp/Properties/Resources.Designer.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.34209
+//     Runtime Version:4.0.30319.42000
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -71,7 +71,12 @@ namespace Shadowsocks.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Shadowsocks=Shadowsocks
+        ///   Looks up a localized string similar to # translation for Simplified Chinese
+        ///
+        ///Shadowsocks=Shadowsocks
+        ///
+        ///# Menu items
+        ///
         ///Enable System Proxy=启用系统代理
         ///Mode=系统代理模式
         ///PAC=PAC 模式
@@ -80,24 +85,16 @@ namespace Shadowsocks.Properties {
         ///Edit Servers...=编辑服务器...
         ///Start on Boot=开机启动
         ///Allow Clients from LAN=允许来自局域网的连接
-        ///Edit PAC File...=编辑 PAC 文件...
+        ///Local PAC=使用本地 PAC
+        ///Online PAC=使用在线 PAC
+        ///Edit Local PAC File...=编辑本地 PAC 文件...
+        ///Update Local PAC from GFWList=从 GFWList 更新本地 PAC
         ///Edit User Rule for GFWList...=编辑 GFWList 的用户规则...
         ///Show QRCode...=显示二维码...
         ///Scan QRCode from Screen...=扫描屏幕上的二维码...
         ///Show Logs...=显示日志...
         ///About...=关于...
-        ///Quit=退出
-        ///Edit Servers=编辑服务器
-        ///&amp;Add=添加(&amp;A)
-        ///&amp;Delete=删除(&amp;D)
-        ///Server=服务器
-        ///Server IP=服务器 IP
-        ///Server Port=服务器端口
-        ///Password=密码
-        ///Encryption=加密
-        ///Proxy Port=代理端口
-        ///Remarks=备注
-        ///OK= [rest of string was truncated]&quot;;.
+        ///Quit=退出 [rest of string was truncated]&quot;;.
         /// </summary>
         internal static string cn {
             get {
@@ -116,29 +113,34 @@ namespace Shadowsocks.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to proxyAddress = &quot;__POLIPO_BIND_IP__&quot;
-        ///proxyPort = 8123
-        ///
-        ///socksParentProxy = &quot;127.0.0.1:__SOCKS_PORT__&quot;
-        ///socksProxyType = socks5
-        ///diskCacheRoot = &quot;&quot;
-        ///localDocumentRoot = &quot;&quot;
-        ///
-        ///allowedPorts = 1-65535
-        ///tunnelAllowedPorts = 1-65535.
+        ///   Looks up a localized resource of type System.Byte[].
         /// </summary>
-        internal static string polipo_config {
+        internal static byte[] mgwz_dll {
             get {
-                return ResourceManager.GetString("polipo_config", resourceCulture);
+                object obj = ResourceManager.GetObject("mgwz_dll", resourceCulture);
+                return ((byte[])(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to listen-address __POLIPO_BIND_IP__:8123
+        ///show-on-task-bar 0
+        ///activity-animation 0
+        ///forward-socks5 / 127.0.0.1:__SOCKS_PORT__ .
+        ///hide-console.
+        /// </summary>
+        internal static string privoxy_conf {
+            get {
+                return ResourceManager.GetString("privoxy_conf", resourceCulture);
             }
         }
         
         /// <summary>
         ///   Looks up a localized resource of type System.Byte[].
         /// </summary>
-        internal static byte[] polipo_exe {
+        internal static byte[] privoxy_exe {
             get {
-                object obj = ResourceManager.GetObject("polipo_exe", resourceCulture);
+                object obj = ResourceManager.GetObject("privoxy_exe", resourceCulture);
                 return ((byte[])(obj));
             }
         }

shadowsocks-csharp/Properties/Resources.resx

@@ -112,12 +112,12 @@
     <value>2.0</value>
   </resheader>
   <resheader name="reader">
-    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
   <resheader name="writer">
-    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
-  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
+  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
   <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>
@@ -127,11 +127,14 @@
   <data name="libsscrypto_dll" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\data\libsscrypto.dll.gz;System.Byte[], mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </data>
-  <data name="polipo_config" type="System.Resources.ResXFileRef, System.Windows.Forms">
-    <value>..\Data\polipo_config.txt;System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089;gb2312</value>
+  <data name="mgwz_dll" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\data\mgwz.dll.gz;System.Byte[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </data>
-  <data name="polipo_exe" type="System.Resources.ResXFileRef, System.Windows.Forms">
-    <value>..\Data\polipo.exe.gz;System.Byte[], mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  <data name="privoxy_conf" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\data\privoxy_conf.txt;System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089;utf-8</value>
+  </data>
+  <data name="privoxy_exe" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\data\privoxy.exe.gz;System.Byte[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </data>
   <data name="proxy_pac_txt" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Data\proxy.pac.txt.gz;System.Byte[], mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>

shadowsocks-csharp/View/ConfigForm.cs

@@ -84,7 +84,7 @@ namespace Shadowsocks.View
                 };
                 int localPort = int.Parse(ProxyPortTextBox.Text);
                 Configuration.CheckServer(server);
-                Configuration.CheckPort(localPort);
+                Configuration.CheckLocalPort(localPort);
                 _modifiedConfiguration.configs[_oldSelectedIndex] = server;
                 _modifiedConfiguration.localPort = localPort;
                 
@@ -133,10 +133,14 @@ namespace Shadowsocks.View
 
         private void LoadCurrentConfiguration()
         {
-            _modifiedConfiguration = controller.GetConfiguration();
+            _modifiedConfiguration = controller.GetConfigurationCopy();
             LoadConfiguration(_modifiedConfiguration);
             _oldSelectedIndex = _modifiedConfiguration.index;
-            ServersListBox.SelectedIndex = _modifiedConfiguration.index;
+            if (_oldSelectedIndex < 0)
+            {
+                _oldSelectedIndex = 0;
+            }
+            ServersListBox.SelectedIndex = _oldSelectedIndex;
             LoadSelectedServer();
         }
 

shadowsocks-csharp/View/LogForm.Designer.cs

@@ -0,0 +1,113 @@
+namespace Shadowsocks.View
+{
+    partial class LogForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.components = new System.ComponentModel.Container();
+            this.textBox1 = new System.Windows.Forms.TextBox();
+            this.contextMenuStrip1 = new System.Windows.Forms.ContextMenuStrip(this.components);
+            this.mainMenu1 = new System.Windows.Forms.MainMenu(this.components);
+            this.menuItem1 = new System.Windows.Forms.MenuItem();
+            this.menuItem2 = new System.Windows.Forms.MenuItem();
+            this.menuItem4 = new System.Windows.Forms.MenuItem();
+            this.SuspendLayout();
+            // 
+            // textBox1
+            // 
+            this.textBox1.BackColor = System.Drawing.Color.Black;
+            this.textBox1.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.textBox1.Font = new System.Drawing.Font("Consolas", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+            this.textBox1.ForeColor = System.Drawing.Color.White;
+            this.textBox1.Location = new System.Drawing.Point(0, 0);
+            this.textBox1.MaxLength = 2147483647;
+            this.textBox1.Multiline = true;
+            this.textBox1.Name = "textBox1";
+            this.textBox1.ReadOnly = true;
+            this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Both;
+            this.textBox1.Size = new System.Drawing.Size(547, 382);
+            this.textBox1.TabIndex = 0;
+            this.textBox1.WordWrap = false;
+            // 
+            // contextMenuStrip1
+            // 
+            this.contextMenuStrip1.Name = "contextMenuStrip1";
+            this.contextMenuStrip1.Size = new System.Drawing.Size(61, 4);
+            // 
+            // mainMenu1
+            // 
+            this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
+            this.menuItem1});
+            // 
+            // menuItem1
+            // 
+            this.menuItem1.Index = 0;
+            this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
+            this.menuItem2,
+            this.menuItem4});
+            this.menuItem1.Text = "&File";
+            // 
+            // menuItem2
+            // 
+            this.menuItem2.Index = 0;
+            this.menuItem2.Text = "&Open Location";
+            this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
+            // 
+            // menuItem4
+            // 
+            this.menuItem4.Index = 1;
+            this.menuItem4.Text = "E&xit";
+            this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
+            // 
+            // LogForm
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(547, 382);
+            this.Controls.Add(this.textBox1);
+            this.Menu = this.mainMenu1;
+            this.Name = "LogForm";
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
+            this.Text = "Log Viewer";
+            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.LogForm_FormClosing);
+            this.Load += new System.EventHandler(this.LogForm_Load);
+            this.Shown += new System.EventHandler(this.LogForm_Shown);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.TextBox textBox1;
+        private System.Windows.Forms.ContextMenuStrip contextMenuStrip1;
+        private System.Windows.Forms.MainMenu mainMenu1;
+        private System.Windows.Forms.MenuItem menuItem1;
+        private System.Windows.Forms.MenuItem menuItem2;
+        private System.Windows.Forms.MenuItem menuItem4;
+    }
+}

shadowsocks-csharp/View/LogForm.cs

@@ -0,0 +1,113 @@
+using Shadowsocks.Properties;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Shadowsocks.View
+{
+    public partial class LogForm : Form
+    {
+        long lastOffset;
+        string filename;
+        Timer timer;
+        const int BACK_OFFSET = 65536;
+
+        public LogForm(string filename)
+        {
+            this.filename = filename;
+            InitializeComponent();
+            this.Icon = Icon.FromHandle(Resources.ssw128.GetHicon());
+        }
+
+        private void Timer_Tick(object sender, EventArgs e)
+        {
+            UpdateContent();
+        }
+
+        private void InitContent()
+        {
+            using (StreamReader reader = new StreamReader(new FileStream(filename,
+                     FileMode.Open, FileAccess.Read, FileShare.ReadWrite)))
+            {
+                if (reader.BaseStream.Length > BACK_OFFSET)
+                {
+                    reader.BaseStream.Seek(-BACK_OFFSET, SeekOrigin.End);
+                    reader.ReadLine();
+                }
+
+                string line = "";
+                while ((line = reader.ReadLine()) != null)
+                    textBox1.AppendText(line + "\r\n");
+
+                textBox1.ScrollToCaret();
+
+                lastOffset = reader.BaseStream.Position;
+            }
+        }
+
+        private void UpdateContent()
+        {
+            using (StreamReader reader = new StreamReader(new FileStream(filename,
+                     FileMode.Open, FileAccess.Read, FileShare.ReadWrite)))
+            {
+                reader.BaseStream.Seek(lastOffset, SeekOrigin.Begin);
+
+                string line = "";
+                bool changed = false;
+                while ((line = reader.ReadLine()) != null)
+                {
+                    changed = true;
+                    textBox1.AppendText(line + "\r\n");
+                }
+
+                if (changed)
+                {
+                    textBox1.ScrollToCaret();
+                }
+
+                lastOffset = reader.BaseStream.Position;
+            }
+        }
+
+        private void LogForm_Load(object sender, EventArgs e)
+        {
+            InitContent();
+            timer = new Timer();
+            timer.Interval = 300;
+            timer.Tick += Timer_Tick;
+            timer.Start();
+        }
+
+        private void LogForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            timer.Stop();
+        }
+
+        private void menuItem2_Click(object sender, EventArgs e)
+        {
+            string argument = @"/select, " + filename;
+            System.Diagnostics.Process.Start("explorer.exe", argument);
+        }
+
+        private void menuItem3_Click(object sender, EventArgs e)
+        {
+
+        }
+
+        private void menuItem4_Click(object sender, EventArgs e)
+        {
+            this.Close();
+        }
+
+        private void LogForm_Shown(object sender, EventArgs e)
+        {
+            textBox1.ScrollToCaret();
+        }
+    }
+}

shadowsocks-csharp/View/LogForm.resx

@@ -0,0 +1,126 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="contextMenuStrip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+  <metadata name="mainMenu1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>172, 17</value>
+  </metadata>
+</root>

shadowsocks-csharp/View/MenuViewController.cs

@@ -29,12 +29,19 @@ namespace Shadowsocks.View
         private MenuItem enableItem;
         private MenuItem modeItem;
         private MenuItem AutoStartupItem;
+        private MenuItem AvailabilityStatistics;
         private MenuItem ShareOverLANItem;
         private MenuItem SeperatorItem;
         private MenuItem ConfigItem;
         private MenuItem ServersItem;
         private MenuItem globalModeItem;
         private MenuItem PACModeItem;
+        private MenuItem localPACItem;
+        private MenuItem onlinePACItem;
+        private MenuItem editLocalPACItem;
+        private MenuItem updateFromGFWListItem;
+        private MenuItem editGFWUserRuleItem;
+        private MenuItem editOnlinePACItem;
         private ConfigForm configForm;
         private string _urlToOpen;
 
@@ -65,9 +72,9 @@ namespace Shadowsocks.View
 
             LoadCurrentConfiguration();
 
-            updateChecker.CheckUpdate(controller.GetConfiguration());
+            updateChecker.CheckUpdate(controller.GetConfigurationCopy());
 
-            if (controller.GetConfiguration().isDefault)
+            if (controller.GetConfigurationCopy().isDefault)
             {
                 _isFirstRun = true;
                 ShowConfigForm();
@@ -100,7 +107,7 @@ namespace Shadowsocks.View
             {
                 icon = Resources.ss24;
             }
-            Configuration config = controller.GetConfiguration();
+            Configuration config = controller.GetConfigurationCopy();
             bool enabled = config.enabled;
             bool global = config.global;
             if (!enabled)
@@ -118,12 +125,21 @@ namespace Shadowsocks.View
             }
             _notifyIcon.Icon = Icon.FromHandle(icon.GetHicon());
 
+            string serverInfo = null;
+            if (controller.GetCurrentStrategy() != null)
+            {
+                serverInfo = controller.GetCurrentStrategy().Name;
+            }
+            else
+            {
+                serverInfo = config.GetCurrentServer().FriendlyName();
+            }
             // we want to show more details but notify icon title is limited to 63 characters
             string text = I18N.GetString("Shadowsocks") + " " + UpdateChecker.Version + "\n" +
                 (enabled ?
                     I18N.GetString("System Proxy On: ") + (global ? I18N.GetString("Global") : I18N.GetString("PAC")) :
                     String.Format(I18N.GetString("Running: Port {0}"), config.localPort))  // this feedback is very important because they need to know Shadowsocks is running
-                + "\n" + config.GetCurrentServer().FriendlyName();
+                + "\n" + serverInfo;
             _notifyIcon.Text = text.Substring(0, Math.Min(63, text.Length));
         }
 
@@ -151,12 +167,18 @@ namespace Shadowsocks.View
                     CreateMenuItem("Show QRCode...", new EventHandler(this.QRCodeItem_Click)),
                     CreateMenuItem("Scan QRCode from Screen...", new EventHandler(this.ScanQRCodeItem_Click))
                 }),
-                new MenuItem("-"),
-                CreateMenuItem("Edit PAC File...", new EventHandler(this.EditPACFileItem_Click)),
-                CreateMenuItem("Update PAC from GFWList", new EventHandler(this.UpdatePACFromGFWListItem_Click)),
-                CreateMenuItem("Edit User Rule for GFWList...", new EventHandler(this.EditUserRuleFileForGFWListItem_Click)),
+                CreateMenuGroup("PAC ", new MenuItem[] {
+                    this.localPACItem = CreateMenuItem("Local PAC", new EventHandler(this.LocalPACItem_Click)),
+                    this.onlinePACItem = CreateMenuItem("Online PAC", new EventHandler(this.OnlinePACItem_Click)),
+                    new MenuItem("-"),
+                    this.editLocalPACItem = CreateMenuItem("Edit Local PAC File...", new EventHandler(this.EditPACFileItem_Click)),
+                    this.updateFromGFWListItem = CreateMenuItem("Update Local PAC from GFWList", new EventHandler(this.UpdatePACFromGFWListItem_Click)),
+                    this.editGFWUserRuleItem = CreateMenuItem("Edit User Rule for GFWList...", new EventHandler(this.EditUserRuleFileForGFWListItem_Click)),
+                    this.editOnlinePACItem = CreateMenuItem("Edit Online PAC URL...", new EventHandler(this.UpdateOnlinePACURLItem_Click)),
+                }),
                 new MenuItem("-"),
                 this.AutoStartupItem = CreateMenuItem("Start on Boot", new EventHandler(this.AutoStartupItem_Click)),
+                this.AvailabilityStatistics = CreateMenuItem("Availability Statistics", new EventHandler(this.AvailabilityStatisticsItem_Click)),
                 this.ShareOverLANItem = CreateMenuItem("Allow Clients from LAN", new EventHandler(this.ShareOverLANItem_Click)),
                 new MenuItem("-"),
                 CreateMenuItem("Show Logs...", new EventHandler(this.ShowLogItem_Click)),
@@ -174,18 +196,18 @@ namespace Shadowsocks.View
 
         private void controller_EnableStatusChanged(object sender, EventArgs e)
         {
-            enableItem.Checked = controller.GetConfiguration().enabled;
+            enableItem.Checked = controller.GetConfigurationCopy().enabled;
             modeItem.Enabled = enableItem.Checked;
         }
 
         void controller_ShareOverLANStatusChanged(object sender, EventArgs e)
         {
-            ShareOverLANItem.Checked = controller.GetConfiguration().shareOverLan;
+            ShareOverLANItem.Checked = controller.GetConfigurationCopy().shareOverLan;
         }
 
         void controller_EnableGlobalChanged(object sender, EventArgs e)
         {
-            globalModeItem.Checked = controller.GetConfiguration().global;
+            globalModeItem.Checked = controller.GetConfigurationCopy().global;
             PACModeItem.Checked = !globalModeItem.Checked;
         }
 
@@ -232,7 +254,7 @@ namespace Shadowsocks.View
 
         private void LoadCurrentConfiguration()
         {
-            Configuration config = controller.GetConfiguration();
+            Configuration config = controller.GetConfigurationCopy();
             UpdateServersMenu();
             enableItem.Checked = config.enabled;
             modeItem.Enabled = config.enabled;
@@ -240,6 +262,10 @@ namespace Shadowsocks.View
             PACModeItem.Checked = !config.global;
             ShareOverLANItem.Checked = config.shareOverLan;
             AutoStartupItem.Checked = AutoStartup.Check();
+            AvailabilityStatistics.Checked = config.availabilityStatistics;
+            onlinePACItem.Checked = onlinePACItem.Enabled && config.useOnlinePac;
+            localPACItem.Checked = !onlinePACItem.Checked;
+            UpdatePACItemsEnabledStatus();
         }
 
         private void UpdateServersMenu()
@@ -249,20 +275,33 @@ namespace Shadowsocks.View
             {
                 items.RemoveAt(0);
             }
-
-            Configuration configuration = controller.GetConfiguration();
-            for (int i = 0; i < configuration.configs.Count; i++)
+            int i = 0;
+            foreach (var strategy in controller.GetStrategies())
+            {
+                MenuItem item = new MenuItem(strategy.Name);
+                item.Tag = strategy.ID;
+                item.Click += AStrategyItem_Click;
+                items.Add(i, item);
+                i++;
+            }
+            int strategyCount = i;
+            Configuration configuration = controller.GetConfigurationCopy();
+            foreach (var server in configuration.configs)
             {
-                Server server = configuration.configs[i];
                 MenuItem item = new MenuItem(server.FriendlyName());
-                item.Tag = i;
+                item.Tag = i - strategyCount;
                 item.Click += AServerItem_Click;
                 items.Add(i, item);
+                i++;
             }
 
-            if (configuration.index >= 0 && configuration.index < configuration.configs.Count)
+            foreach (MenuItem item in items)
             {
-                items[configuration.index].Checked = true;
+                if (item.Tag != null && (item.Tag.ToString() == configuration.index.ToString() || item.Tag.ToString() == configuration.strategy))
+                {
+                    item.Checked = true;
+                }
+
             }
         }
 
@@ -313,7 +352,7 @@ namespace Shadowsocks.View
 
         private void AboutItem_Click(object sender, EventArgs e)
         {
-            Process.Start("https://github.com/shadowsocks/shadowsocks-csharp");
+            Process.Start("https://github.com/shadowsocks/shadowsocks-windows");
         }
 
         private void notifyIcon1_DoubleClick(object sender, MouseEventArgs e)
@@ -366,11 +405,17 @@ namespace Shadowsocks.View
             controller.SelectServerIndex((int)item.Tag);
         }
 
+        private void AStrategyItem_Click(object sender, EventArgs e)
+        {
+            MenuItem item = (MenuItem)sender;
+            controller.SelectStrategy((string)item.Tag);
+        }
+
         private void ShowLogItem_Click(object sender, EventArgs e)
         {
             string argument = Logging.LogFile;
 
-            System.Diagnostics.Process.Start("notepad.exe", argument);
+            new LogForm(argument).Show();
         }
 
         private void QRCodeItem_Click(object sender, EventArgs e)
@@ -481,5 +526,70 @@ namespace Shadowsocks.View
 				MessageBox.Show(I18N.GetString("Failed to update registry"));
 			}
 		}
+
+		private void AvailabilityStatisticsItem_Click(object sender, EventArgs e) {
+			AvailabilityStatistics.Checked = !AvailabilityStatistics.Checked;
+            controller.ToggleAvailabilityStatistics(AvailabilityStatistics.Checked);
+		}
+
+        private void LocalPACItem_Click(object sender, EventArgs e)
+        {
+            if (!localPACItem.Checked)
+            {
+                localPACItem.Checked = true;
+                onlinePACItem.Checked = false;
+                controller.UseOnlinePAC(false);
+                UpdatePACItemsEnabledStatus();
+            }
+        }
+
+        private void OnlinePACItem_Click(object sender, EventArgs e)
+        {
+            if (!onlinePACItem.Checked)
+            {
+                if (String.IsNullOrEmpty(controller.GetConfigurationCopy().pacUrl))
+                {
+                    UpdateOnlinePACURLItem_Click(sender, e);
+                }
+                if (!String.IsNullOrEmpty(controller.GetConfigurationCopy().pacUrl))
+                {
+                    localPACItem.Checked = false;
+                    onlinePACItem.Checked = true;
+                    controller.UseOnlinePAC(true);
+                }
+                UpdatePACItemsEnabledStatus();
+            }
+        }
+
+        private void UpdateOnlinePACURLItem_Click(object sender, EventArgs e)
+        {
+            string origPacUrl = controller.GetConfigurationCopy().pacUrl;
+            string pacUrl = Microsoft.VisualBasic.Interaction.InputBox(
+                I18N.GetString("Please input PAC Url"),
+                I18N.GetString("Edit Online PAC URL"),
+                origPacUrl, -1, -1);
+            if (!string.IsNullOrEmpty(pacUrl) && pacUrl != origPacUrl)
+            {
+                controller.SavePACUrl(pacUrl);
+            }
+        }
+
+        private void UpdatePACItemsEnabledStatus()
+        {
+            if (this.localPACItem.Checked)
+            {
+                this.editLocalPACItem.Enabled = true;
+                this.updateFromGFWListItem.Enabled = true;
+                this.editGFWUserRuleItem.Enabled = true;
+                this.editOnlinePACItem.Enabled = false;
+            }
+            else
+            {
+                this.editLocalPACItem.Enabled = false;
+                this.updateFromGFWListItem.Enabled = false;
+                this.editGFWUserRuleItem.Enabled = false;
+                this.editOnlinePACItem.Enabled = true;
+            }
+        }
     }
 }

shadowsocks-csharp/View/QRCodeForm.Designer.cs

@@ -29,6 +29,7 @@
         private void InitializeComponent()
         {
             this.pictureBox1 = new System.Windows.Forms.PictureBox();
+            this.listBox1 = new System.Windows.Forms.ListBox();
             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
             this.SuspendLayout();
             // 
@@ -42,6 +43,19 @@
             this.pictureBox1.TabIndex = 1;
             this.pictureBox1.TabStop = false;
             // 
+            // listBox1
+            // 
+            this.listBox1.DisplayMember = "Value";
+            this.listBox1.FormattingEnabled = true;
+            this.listBox1.ItemHeight = 12;
+            this.listBox1.Location = new System.Drawing.Point(224, 10);
+            this.listBox1.Name = "listBox1";
+            this.listBox1.ScrollAlwaysVisible = true;
+            this.listBox1.Size = new System.Drawing.Size(227, 208);
+            this.listBox1.TabIndex = 2;
+            this.listBox1.ValueMember = "Key";
+            this.listBox1.SelectedIndexChanged += new System.EventHandler(this.listBox1_SelectedIndexChanged);
+            // 
             // QRCodeForm
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
@@ -49,7 +63,8 @@
             this.AutoSize = true;
             this.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
             this.BackColor = System.Drawing.Color.White;
-            this.ClientSize = new System.Drawing.Size(338, 274);
+            this.ClientSize = new System.Drawing.Size(457, 228);
+            this.Controls.Add(this.listBox1);
             this.Controls.Add(this.pictureBox1);
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
             this.MaximizeBox = false;
@@ -67,5 +82,6 @@
         #endregion
 
         private System.Windows.Forms.PictureBox pictureBox1;
+        private System.Windows.Forms.ListBox listBox1;
     }
 }

shadowsocks-csharp/View/QRCodeForm.cs

@@ -8,8 +8,10 @@ using System.Data;
 using System.Drawing;
 using System.IO;
 using System.IO.Compression;
+using System.Linq;
 using System.Text;
 using System.Windows.Forms;
+using Shadowsocks.Model;
 
 namespace Shadowsocks.View
 {
@@ -30,8 +32,8 @@ namespace Shadowsocks.View
             string qrText = ssconfig;
             QRCode code = ZXing.QrCode.Internal.Encoder.encode(qrText, ErrorCorrectionLevel.M);
             ByteMatrix m = code.Matrix;
-            int blockSize = Math.Max(pictureBox1.Height / m.Height, 1);
-            Bitmap drawArea = new Bitmap((m.Width * blockSize), (m.Height * blockSize));
+            int blockSize = Math.Max(pictureBox1.Height/m.Height, 1);
+            Bitmap drawArea = new Bitmap((m.Width*blockSize), (m.Height*blockSize));
             using (Graphics g = Graphics.FromImage(drawArea))
             {
                 g.Clear(Color.White);
@@ -43,7 +45,7 @@ namespace Shadowsocks.View
                         {
                             if (m[row, col] != 0)
                             {
-                                g.FillRectangle(b, blockSize * row, blockSize * col, blockSize, blockSize);
+                                g.FillRectangle(b, blockSize*row, blockSize*col, blockSize, blockSize);
                             }
                         }
                     }
@@ -54,7 +56,20 @@ namespace Shadowsocks.View
 
         private void QRCodeForm_Load(object sender, EventArgs e)
         {
-            GenQR(code);
+            var servers = Configuration.Load();
+            var serverDatas = servers.configs.Select(
+                server =>
+                    new KeyValuePair<string, string>(ShadowsocksController.GetQRCode(server), server.FriendlyName())
+                ).ToList();
+            listBox1.DataSource = serverDatas;
+
+            var selectIndex = serverDatas.FindIndex(serverData => serverData.Key.StartsWith(code));
+            if (selectIndex >= 0) listBox1.SetSelected(selectIndex, true);
+        }
+
+        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            GenQR((sender as ListBox)?.SelectedValue.ToString());
         }
     }
 }

shadowsocks-csharp/View/QRCodeForm.resx

@@ -112,9 +112,9 @@
     <value>2.0</value>
   </resheader>
   <resheader name="reader">
-    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
   <resheader name="writer">
-    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
 </root>

shadowsocks-csharp/shadowsocks-csharp.csproj

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Shadowsocks</RootNamespace>
     <AssemblyName>Shadowsocks</AssemblyName>
-    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <StartupObject>
     </StartupObject>
@@ -21,8 +21,7 @@
     <UpgradeBackupLocation>
     </UpgradeBackupLocation>
     <OldToolsVersion>3.5</OldToolsVersion>
-    <TargetFrameworkProfile>
-    </TargetFrameworkProfile>
+    <TargetFrameworkProfile>Client</TargetFrameworkProfile>
     <PublishUrl>publish\</PublishUrl>
     <Install>true</Install>
     <InstallFrom>Disk</InstallFrom>
@@ -63,6 +62,7 @@
     <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Microsoft.VisualBasic" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
@@ -123,14 +123,18 @@
     <Compile Include="3rd\zxing\ResultPoint.cs" />
     <Compile Include="3rd\zxing\ResultPointCallback.cs" />
     <Compile Include="3rd\zxing\WriterException.cs" />
-    <Compile Include="Controller\AutoStartup.cs" />
+    <Compile Include="Controller\Service\AvailabilityStatistics.cs" />
+    <Compile Include="Controller\Strategy\HighAvailabilityStrategy.cs" />
+    <Compile Include="Controller\Strategy\SimplyChooseByStatisticsStrategy.cs" />
+    <Compile Include="Controller\System\AutoStartup.cs" />
     <Compile Include="Controller\FileManager.cs" />
-    <Compile Include="Controller\GFWListUpdater.cs" />
+    <Compile Include="Controller\Service\GFWListUpdater.cs" />
     <Compile Include="Controller\I18N.cs" />
-    <Compile Include="Controller\Listener.cs" />
+    <Compile Include="Controller\Service\Listener.cs" />
     <Compile Include="Controller\Logging.cs" />
-    <Compile Include="Controller\PortForwarder.cs" />
-    <Compile Include="Controller\UpdateChecker.cs" />
+    <Compile Include="Controller\Service\PortForwarder.cs" />
+    <Compile Include="Controller\Service\UDPRelay.cs" />
+    <Compile Include="Controller\Service\UpdateChecker.cs" />
     <Compile Include="Encryption\EncryptorBase.cs" />
     <Compile Include="Encryption\EncryptorFactory.cs" />
     <Compile Include="Encryption\IVEncryptor.cs" />
@@ -140,7 +144,7 @@
     <Compile Include="Encryption\SodiumEncryptor.cs" />
     <Compile Include="Encryption\TableEncryptor.cs" />
     <Compile Include="Encryption\IEncryptor.cs" />
-    <Compile Include="Controller\PACServer.cs" />
+    <Compile Include="Controller\Service\PACServer.cs" />
     <Compile Include="Model\Server.cs" />
     <Compile Include="Model\Configuration.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
@@ -148,6 +152,9 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
+    <Compile Include="Controller\Strategy\BalancingStrategy.cs" />
+    <Compile Include="Controller\Strategy\StrategyManager.cs" />
+    <Compile Include="Controller\Strategy\IStrategy.cs" />
     <Compile Include="Util\Util.cs" />
     <Compile Include="View\ConfigForm.cs">
       <SubType>Form</SubType>
@@ -155,12 +162,18 @@
     <Compile Include="View\ConfigForm.Designer.cs">
       <DependentUpon>ConfigForm.cs</DependentUpon>
     </Compile>
-    <Compile Include="Controller\Local.cs" />
-    <Compile Include="Controller\PolipoRunner.cs" />
+    <Compile Include="Controller\Service\TCPRelay.cs" />
+    <Compile Include="Controller\Service\PolipoRunner.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Controller\ShadowsocksController.cs" />
-    <Compile Include="Controller\SystemProxy.cs" />
+    <Compile Include="Controller\System\SystemProxy.cs" />
+    <Compile Include="View\LogForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="View\LogForm.Designer.cs">
+      <DependentUpon>LogForm.cs</DependentUpon>
+    </Compile>
     <Compile Include="View\MenuViewController.cs" />
     <Compile Include="View\QRCodeForm.cs">
       <SubType>Form</SubType>
@@ -180,6 +193,9 @@
       <SubType>Designer</SubType>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
+    <EmbeddedResource Include="View\LogForm.resx">
+      <DependentUpon>LogForm.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="View\QRCodeForm.resx">
       <DependentUpon>QRCodeForm.cs</DependentUpon>
     </EmbeddedResource>
@@ -189,7 +205,8 @@
     </None>
     <None Include="Data\abp.js.gz" />
     <None Include="Data\libsscrypto.dll.gz" />
-    <None Include="Data\polipo.exe.gz" />
+    <None Include="Data\mgwz.dll.gz" />
+    <None Include="Data\privoxy.exe.gz" />
     <None Include="Data\proxy.pac.txt.gz" />
   </ItemGroup>
   <ItemGroup>
@@ -198,9 +215,9 @@
     <None Include="Resources\ss24.png" />
     <None Include="Resources\ssw128.png" />
     <Content Include="Data\cn.txt" />
+    <Content Include="Data\privoxy_conf.txt" />
     <Content Include="Data\user-rule.txt" />
     <Content Include="shadowsocks.ico" />
-    <None Include="Data\polipo_config.txt" />
   </ItemGroup>
   <ItemGroup>
     <BootstrapperPackage Include="Microsoft.Net.Client.3.5">