Merge branch 'master' of https://github.com/shadowsocks/shadowsocks-windows.git into dev_proxy

# Conflicts:
#	shadowsocks-csharp/Controller/Service/TCPRelay.cs
#	shadowsocks-csharp/Controller/ShadowsocksController.cs
#	shadowsocks-csharp/View/MenuViewController.cs

shadowsocks-csharp/Controller/Service/AvailabilityStatistics.cs

@@ -107,67 +107,30 @@ namespace Shadowsocks.Controller
                 var bytes = inbound - lastInbound;
                 _lastInboundCounter[id] = inbound;
                 var inboundSpeed = GetSpeedInKiBPerSecond(bytes, _monitorInterval.TotalSeconds);
-                _inboundSpeedRecords.GetOrAdd(id, new List<int> {inboundSpeed}).Add(inboundSpeed);
+                _inboundSpeedRecords.GetOrAdd(id, (k) =>
+                {
+                    List<int> records = new List<int>();
+                    records.Add(inboundSpeed);
+                    return records;
+                });
 
                 var lastOutbound = _lastOutboundCounter[id];
                 var outbound = _outboundCounter[id];
                 bytes = outbound - lastOutbound;
                 _lastOutboundCounter[id] = outbound;
                 var outboundSpeed = GetSpeedInKiBPerSecond(bytes, _monitorInterval.TotalSeconds);
-                _outboundSpeedRecords.GetOrAdd(id, new List<int> {outboundSpeed}).Add(outboundSpeed);
+                _outboundSpeedRecords.GetOrAdd(id, (k) =>
+                {
+                    List<int> records = new List<int>();
+                    records.Add(outboundSpeed);
+                    return records;
+                });
 
                 Logging.Debug(
                     $"{id}: current/max inbound {inboundSpeed}/{_inboundSpeedRecords[id].Max()} KiB/s, current/max outbound {outboundSpeed}/{_outboundSpeedRecords[id].Max()} KiB/s");
             }
         }
 
-        private async Task<ICMPResult> ICMPTest(Server server)
-        {
-            Logging.Debug("Ping " + server.FriendlyName());
-            if (server.server == "") return null;
-            var result = new ICMPResult(server);
-            try
-            {
-                var IP =
-                    Dns.GetHostAddresses(server.server)
-                        .First(
-                            ip =>
-                                ip.AddressFamily == AddressFamily.InterNetwork ||
-                                ip.AddressFamily == AddressFamily.InterNetworkV6);
-                var ping = new Ping();
-
-                foreach (var _ in Enumerable.Range(0, Repeat))
-                {
-                    try
-                    {
-                        var reply = await ping.SendTaskAsync(IP, TimeoutMilliseconds);
-                        if (reply.Status.Equals(IPStatus.Success))
-                        {
-                            result.RoundtripTime.Add((int?) reply.RoundtripTime);
-                        }
-                        else
-                        {
-                            result.RoundtripTime.Add(null);
-                        }
-
-                        //Do ICMPTest in a random frequency
-                        Thread.Sleep(TimeoutMilliseconds + new Random().Next()%TimeoutMilliseconds);
-                    }
-                    catch (Exception e)
-                    {
-                        Logging.Error($"An exception occured while eveluating {server.FriendlyName()}");
-                        Logging.LogUsefulException(e);
-                    }
-                }
-            }
-            catch (Exception e)
-            {
-                Logging.Error($"An exception occured while eveluating {server.FriendlyName()}");
-                Logging.LogUsefulException(e);
-            }
-            return result;
-        }
-
         private void Reset()
         {
             _inboundSpeedRecords.Clear();
@@ -178,15 +141,14 @@ namespace Shadowsocks.Controller
         private void Run(object _)
         {
             UpdateRecords();
-            Save();
             Reset();
-            FilterRawStatistics();
         }
 
-        private async void UpdateRecords()
+        private void UpdateRecords()
         {
             var records = new Dictionary<string, StatisticsRecord>();
-
+            UpdateRecordsState state = new UpdateRecordsState();
+            state.counter = _controller.GetCurrentConfiguration().configs.Count;
             foreach (var server in _controller.GetCurrentConfiguration().configs)
             {
                 var id = server.Identifier();
@@ -202,43 +164,80 @@ namespace Shadowsocks.Controller
                     records[id] = record;
                 else
                     records.Add(id, record);
+                if (Config.Ping)
+                {
+                    MyPing ping = new MyPing(server, Repeat);
+                    ping.Completed += ping_Completed;
+                    ping.Start(new PingState { state = state, record = record });
+                }
+                else if (!record.IsEmptyData())
+                {
+                    AppendRecord(id, record);
+                }
             }
 
-            if (Config.Ping)
+            if (!Config.Ping)
             {
-                var icmpResults = await TaskEx.WhenAll(_controller.GetCurrentConfiguration().configs.Select(ICMPTest));
-                foreach (var result in icmpResults.Where(result => result != null))
-                {
-                    records[result.Server.Identifier()].SetResponse(result.RoundtripTime);
-                }
+                Save();
+                FilterRawStatistics();
             }
+        }
 
-            foreach (var kv in records.Where(kv => !kv.Value.IsEmptyData()))
+        private void ping_Completed(object sender, MyPing.CompletedEventArgs e)
+        {
+            PingState pingState = (PingState)e.UserState;
+            UpdateRecordsState state = pingState.state;
+            Server server = e.Server;
+            StatisticsRecord record = pingState.record;
+            record.SetResponse(e.RoundtripTime);
+            if (!record.IsEmptyData())
             {
-                AppendRecord(kv.Key, kv.Value);
+                AppendRecord(server.Identifier(), record);
+            }
+            Logging.Debug($"Ping {server.FriendlyName()} {e.RoundtripTime.Count} times, {(100 - record.PackageLoss * 100)}% packages loss, min {record.MinResponse} ms, max {record.MaxResponse} ms, avg {record.AverageResponse} ms");
+            if (Interlocked.Decrement(ref state.counter) == 0)
+            {
+                Save();
+                FilterRawStatistics();
             }
         }
 
         private void AppendRecord(string serverIdentifier, StatisticsRecord record)
         {
-            List<StatisticsRecord> records;
-            if (!RawStatistics.TryGetValue(serverIdentifier, out records))
+            try
+            {
+                List<StatisticsRecord> records;
+                lock (RawStatistics)
+                {
+                    if (!RawStatistics.TryGetValue(serverIdentifier, out records))
+                    {
+                        records = new List<StatisticsRecord>();
+                        RawStatistics[serverIdentifier] = records;
+                    }
+                }
+                records.Add(record);
+            }
+            catch (Exception e)
             {
-                records = new List<StatisticsRecord>();
+                Logging.LogUsefulException(e);
             }
-            records.Add(record);
-            RawStatistics[serverIdentifier] = records;
         }
 
         private void Save()
         {
+            Logging.Debug($"save statistics to {AvailabilityStatisticsFile}");
             if (RawStatistics.Count == 0)
             {
                 return;
             }
             try
             {
-                var content = JsonConvert.SerializeObject(RawStatistics, Formatting.None);
+                string content;
+#if DEBUG
+                content = JsonConvert.SerializeObject(RawStatistics, Formatting.Indented);
+#else
+                content = JsonConvert.SerializeObject(RawStatistics, Formatting.None);
+#endif
                 File.WriteAllText(AvailabilityStatisticsFile, content);
             }
             catch (IOException e)
@@ -258,17 +257,25 @@ namespace Shadowsocks.Controller
 
         private void FilterRawStatistics()
         {
-            if (RawStatistics == null) return;
-            if (FilteredStatistics == null)
+            try
             {
-                FilteredStatistics = new Statistics();
-            }
+                Logging.Debug("filter raw statistics");
+                if (RawStatistics == null) return;
+                if (FilteredStatistics == null)
+                {
+                    FilteredStatistics = new Statistics();
+                }
 
-            foreach (var serverAndRecords in RawStatistics)
+                foreach (var serverAndRecords in RawStatistics)
+                {
+                    var server = serverAndRecords.Key;
+                    var filteredRecords = serverAndRecords.Value.FindAll(IsValidRecord);
+                    FilteredStatistics[server] = filteredRecords;
+                }
+            }
+            catch (Exception e)
             {
-                var server = serverAndRecords.Key;
-                var filteredRecords = serverAndRecords.Value.FindAll(IsValidRecord);
-                FilteredStatistics[server] = filteredRecords;
+                Logging.LogUsefulException(e);
             }
         }
 
@@ -298,21 +305,10 @@ namespace Shadowsocks.Controller
 
         private static int GetSpeedInKiBPerSecond(long bytes, double seconds)
         {
-            var result = (int) (bytes/seconds)/1024;
+            var result = (int)(bytes / seconds) / 1024;
             return result;
         }
 
-        private class ICMPResult
-        {
-            internal readonly List<int?> RoundtripTime = new List<int?>();
-            internal readonly Server Server;
-
-            internal ICMPResult(Server server)
-            {
-                Server = server;
-            }
-        }
-
         public void Dispose()
         {
             _recorder.Dispose();
@@ -321,44 +317,158 @@ namespace Shadowsocks.Controller
 
         public void UpdateLatency(Server server, int latency)
         {
-            List<int> records;
-            _latencyRecords.TryGetValue(server.Identifier(), out records);
-            if (records == null)
+            _latencyRecords.GetOrAdd(server.Identifier(), (k) =>
             {
-                records = new List<int>();
-            }
-            records.Add(latency);
-            _latencyRecords[server.Identifier()] = records;
+                List<int> records = new List<int>();
+                records.Add(latency);
+                return records;
+            });
         }
 
         public void UpdateInboundCounter(Server server, long n)
         {
-            long count;
-            if (_inboundCounter.TryGetValue(server.Identifier(), out count))
+            _inboundCounter.AddOrUpdate(server.Identifier(), (k) =>
             {
-                count += n;
-            }
-            else
-            {
-                count = n;
-                _lastInboundCounter[server.Identifier()] = 0;
-            }
-            _inboundCounter[server.Identifier()] = count;
+                _lastInboundCounter.GetOrAdd(server.Identifier(), 0);
+                return n;
+            }, (k, v) => (v + n));
         }
 
         public void UpdateOutboundCounter(Server server, long n)
         {
-            long count;
-            if (_outboundCounter.TryGetValue(server.Identifier(), out count))
+            _outboundCounter.AddOrUpdate(server.Identifier(), (k) =>
+            {
+                _lastOutboundCounter.GetOrAdd(server.Identifier(), 0);
+                return n;
+            }, (k, v) => (v + n));
+        }
+
+        class UpdateRecordsState
+        {
+            public int counter;
+        }
+
+        class PingState
+        {
+            public UpdateRecordsState state;
+            public StatisticsRecord record;
+        }
+
+        class MyPing
+        {
+            //arguments for ICMP tests
+            public const int TimeoutMilliseconds = 500;
+
+            public EventHandler<CompletedEventArgs> Completed;
+            private Server server;
+
+            private int repeat;
+            private IPAddress ip;
+            private Ping ping;
+            private List<int?> RoundtripTime;
+
+            public MyPing(Server server, int repeat)
             {
-                count += n;
+                this.server = server;
+                this.repeat = repeat;
+                RoundtripTime = new List<int?>(repeat);
+                ping = new Ping();
+                ping.PingCompleted += Ping_PingCompleted;
+            }
+
+            public void Start(object userstate)
+            {
+                if (server.server == "")
+                {
+                    FireCompleted(new Exception("Invalid Server"), userstate);
+                    return;
+                }
+                new Task(() => ICMPTest(0, userstate)).Start();
             }
-            else
+
+            private void ICMPTest(int delay, object userstate)
             {
-                count = n;
-                _lastOutboundCounter[server.Identifier()] = 0;
+                try
+                {
+                    Logging.Debug($"Ping {server.FriendlyName()}");
+                    if (ip == null)
+                    {
+                        ip = Dns.GetHostAddresses(server.server)
+                                .First(
+                                    ip =>
+                                        ip.AddressFamily == AddressFamily.InterNetwork ||
+                                        ip.AddressFamily == AddressFamily.InterNetworkV6);
+                    }
+                    repeat--;
+                    if (delay > 0)
+                        Thread.Sleep(delay);
+                    ping.SendAsync(ip, TimeoutMilliseconds, userstate);
+                }
+                catch (Exception e)
+                {
+                    Logging.Error($"An exception occured while eveluating {server.FriendlyName()}");
+                    Logging.LogUsefulException(e);
+                    FireCompleted(e, userstate);
+                }
+            }
+
+            private void Ping_PingCompleted(object sender, PingCompletedEventArgs e)
+            {
+                try
+                {
+                    if (e.Reply.Status == IPStatus.Success)
+                    {
+                        Logging.Debug($"Ping {server.FriendlyName()} {e.Reply.RoundtripTime} ms");
+                        RoundtripTime.Add((int?)e.Reply.RoundtripTime);
+                    }
+                    else
+                    {
+                        Logging.Debug($"Ping {server.FriendlyName()} timeout");
+                        RoundtripTime.Add(null);
+                    }
+                    TestNext(e.UserState);
+                }
+                catch (Exception ex)
+                {
+                    Logging.Error($"An exception occured while eveluating {server.FriendlyName()}");
+                    Logging.LogUsefulException(ex);
+                    FireCompleted(ex, e.UserState);
+                }
+            }
+
+            private void TestNext(object userstate)
+            {
+                if (repeat > 0)
+                {
+                    //Do ICMPTest in a random frequency
+                    int delay = TimeoutMilliseconds + new Random().Next() % TimeoutMilliseconds;
+                    new Task(() => ICMPTest(delay, userstate)).Start();
+                }
+                else
+                {
+                    FireCompleted(null, userstate);
+                }
+            }
+
+            private void FireCompleted(Exception error, object userstate)
+            {
+                Completed?.Invoke(this, new CompletedEventArgs
+                {
+                    Error = error,
+                    Server = server,
+                    RoundtripTime = RoundtripTime,
+                    UserState = userstate
+                });
+            }
+
+            public class CompletedEventArgs : EventArgs
+            {
+                public Exception Error;
+                public Server Server;
+                public List<int?> RoundtripTime;
+                public object UserState;
             }
-            _outboundCounter[server.Identifier()] = count;
         }
+
     }
 }

shadowsocks-csharp/Controller/Service/PolipoRunner.cs

@@ -47,20 +47,7 @@ namespace Shadowsocks.Controller
                 Process[] existingPolipo = Process.GetProcessesByName("ss_privoxy");
                 foreach (Process p in existingPolipo)
                 {
-                    try
-                    {
-                        p.CloseMainWindow();
-                        p.WaitForExit(100);
-                        if (!p.HasExited)
-                        {
-                            p.Kill();
-                            p.WaitForExit();
-                        }
-                    }
-                    catch (Exception e)
-                    {
-                        Logging.LogUsefulException(e);
-                    }
+                    KillProcess(p);
                 }
                 string polipoConfig = Resources.privoxy_conf;
                 _runningPort = this.GetFreePort();
@@ -86,20 +73,30 @@ namespace Shadowsocks.Controller
         {
             if (_process != null)
             {
-                try
-                {
-                    _process.Kill();
-                    _process.WaitForExit();
-                }
-                catch (Exception e)
-                {
-                    Logging.LogUsefulException(e);
-                }
+                KillProcess(_process);
                 _process = null;
             }
             RefreshTrayArea();
         }
 
+        private static void KillProcess(Process p)
+        {
+            try
+            {
+                p.CloseMainWindow();
+                p.WaitForExit(100);
+                if (!p.HasExited)
+                {
+                    p.Kill();
+                    p.WaitForExit();
+                }
+            }
+            catch (Exception e)
+            {
+                Logging.LogUsefulException(e);
+            }
+        }
+
         private int GetFreePort()
         {
             int defaultPort = 8123;

shadowsocks-csharp/Controller/Service/TCPRelay.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Net;
 using System.Net.Sockets;
 using System.Timers;
@@ -17,10 +18,7 @@ namespace Shadowsocks.Controller
         private DateTime _lastSweepTime;
         private Configuration _config;
 
-        public ISet<TCPHandler> Handlers
-        {
-            get; set;
-        }
+        public ISet<TCPHandler> Handlers { get; set; }
 
         public TCPRelay(ShadowsocksController controller, Configuration conf)
         {
@@ -32,19 +30,14 @@ namespace Shadowsocks.Controller
 
         public bool Handle(byte[] firstPacket, int length, Socket socket, object state)
         {
-            if (socket.ProtocolType != ProtocolType.Tcp)
-            {
+            if (socket.ProtocolType != ProtocolType.Tcp
+                || (length < 2 || firstPacket[0] != 5))
                 return false;
-            }
-            if (length < 2 || firstPacket[0] != 5)
-            {
-                return false;
-            }
             socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
             TCPHandler handler = new TCPHandler(this, _config);
             handler.connection = socket;
             handler.controller = _controller;
-            handler.relay = this;
+            handler.tcprelay = this;
 
             handler.Start(firstPacket, length);
             IList<TCPHandler> handlersToClose = new List<TCPHandler>();
@@ -56,12 +49,8 @@ namespace Shadowsocks.Controller
                 {
                     _lastSweepTime = now;
                     foreach (TCPHandler handler1 in Handlers)
-                    {
                         if (now - handler1.lastActivity > TimeSpan.FromSeconds(900))
-                        {
                             handlersToClose.Add(handler1);
-                        }
-                    }
                 }
             }
             foreach (TCPHandler handler1 in handlersToClose)
@@ -90,6 +79,11 @@ namespace Shadowsocks.Controller
 
     class TCPHandler
     {
+        // Size of receive buffer.
+        public static readonly int RecvSize = 8192;
+        public static readonly int RecvReserveSize = IVEncryptor.ONETIMEAUTH_BYTES + IVEncryptor.AUTH_BYTES; // reserve for one-time auth
+        public static readonly int BufferSize = RecvSize + RecvReserveSize + 32;
+
         // public Encryptor encryptor;
         public IEncryptor encryptor;
         public Server server;
@@ -97,63 +91,52 @@ namespace Shadowsocks.Controller
         public IProxy remote;
         public Socket connection;
         public ShadowsocksController controller;
-        public TCPRelay relay;
-        public Configuration config;
+        public TCPRelay tcprelay;
 
         public DateTime lastActivity;
 
-        private const int maxRetry = 4;
-        private int retryCount = 0;
-        private bool proxyConnected;
-        private bool destConnected;
+        private const int MaxRetry = 4;
+        private int _retryCount = 0;
+        private bool _proxyConnected;
+        private bool _destConnected;
 
-        private byte command;
+        private byte _command;
         private byte[] _firstPacket;
         private int _firstPacketLength;
-        // Size of receive buffer.
-        public const int RecvSize = 8192;
-        public const int RecvReserveSize = IVEncryptor.ONETIMEAUTH_BYTES + IVEncryptor.AUTH_BYTES; // reserve for one-time auth
-        public const int BufferSize = RecvSize + RecvReserveSize + 32;
-
-        private int totalRead = 0;
-        private int totalWrite = 0;
-
-        // remote receive buffer
-        private byte[] remoteRecvBuffer = new byte[BufferSize];
-        // remote send buffer
-        private byte[] remoteSendBuffer = new byte[BufferSize];
-        // connection receive buffer
-        private byte[] connetionRecvBuffer = new byte[BufferSize];
-        // connection send buffer
-        private byte[] connetionSendBuffer = new byte[BufferSize];
-        // Received data string.
-
-        private bool connectionShutdown = false;
-        private bool remoteShutdown = false;
-        private bool closed = false;
-
-        private object encryptionLock = new object();
-        private object decryptionLock = new object();
+
+        private int _totalRead = 0;
+        private int _totalWrite = 0;
+
+        private byte[] _remoteRecvBuffer = new byte[BufferSize];
+        private byte[] _remoteSendBuffer = new byte[BufferSize];
+        private byte[] _connetionRecvBuffer = new byte[BufferSize];
+        private byte[] _connetionSendBuffer = new byte[BufferSize];
+
+        private bool _connectionShutdown = false;
+        private bool _remoteShutdown = false;
+        private bool _closed = false;
+
+        private object _encryptionLock = new object();
+        private object _decryptionLock = new object();
 
         private DateTime _startConnectTime;
         private DateTime _startReceivingTime;
         private DateTime _startSendingTime;
         private int _bytesToSend;
-        private TCPRelay tcprelay;  // TODO: tcprelay ?= relay
+        private TCPRelay _tcprelay;  // TODO: is _tcprelay equals tcprelay declared above?
+        private Configuration _config;
 
         public TCPHandler(TCPRelay tcprelay, Configuration config)
         {
-            this.tcprelay = tcprelay;
-            this.config = config;
+            this._tcprelay = tcprelay;
+            this._config = config;
         }
 
         public void CreateRemote()
         {
             Server server = controller.GetAServer(IStrategyCallerType.TCP, (IPEndPoint)connection.RemoteEndPoint);
             if (server == null || server.server == "")
-            {
                 throw new ArgumentException("No server configured");
-            }
             encryptor = EncryptorFactory.GetEncryptor(server.method, server.password, server.auth, false);
             this.server = server;
         }
@@ -168,72 +151,53 @@ namespace Shadowsocks.Controller
 
         private void CheckClose()
         {
-            if (connectionShutdown && remoteShutdown)
-            {
+            if (_connectionShutdown && _remoteShutdown)
                 Close();
-            }
         }
 
         public void Close()
         {
-            lock (relay.Handlers)
+            lock (tcprelay.Handlers)
             {
-                relay.Handlers.Remove(this);
+                tcprelay.Handlers.Remove(this);
             }
-            lock (this)
+            lock (this) {
+                if (_closed) return;
+                _closed = true;
+            }
+            try
             {
-                if (closed)
-                {
-                    return;
-                }
-                closed = true;
+                connection?.Shutdown(SocketShutdown.Both);
+                connection?.Close();
             }
-            if (connection != null)
+            catch (Exception e)
             {
-                try
-                {
-                    connection.Shutdown(SocketShutdown.Both);
-                    connection.Close();
-                }
-                catch (Exception e)
-                {
-                    Logging.LogUsefulException(e);
-                }
+                Logging.LogUsefulException(e);
             }
-            if (remote != null)
+            try
             {
-                try
-                {
-                    remote.Shutdown(SocketShutdown.Both);
-                    remote.Close();
-                }
-                catch (Exception e)
-                {
-                    Logging.LogUsefulException(e);
-                }
+                remote?.Shutdown(SocketShutdown.Both);
+                remote?.Close();
             }
-            lock (encryptionLock)
+            catch (Exception e)
             {
-                lock (decryptionLock)
+                Logging.LogUsefulException(e);
+            }
+            lock (_encryptionLock)
+            {
+                lock (_decryptionLock)
                 {
-                    if (encryptor != null)
-                    {
-                        ((IDisposable)encryptor).Dispose();
-                    }
+                    encryptor?.Dispose();
                 }
             }
         }
 
         private void HandshakeReceive()
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 int bytesRead = _firstPacketLength;
-
                 if (bytesRead > 1)
                 {
                     byte[] response = { 5, 0 };
@@ -243,12 +207,10 @@ namespace Shadowsocks.Controller
                         response = new byte[] { 0, 91 };
                         Logging.Error("socks 5 protocol error");
                     }
-                    connection.BeginSend(response, 0, response.Length, 0, new AsyncCallback(HandshakeSendCallback), null);
+                    connection.BeginSend(response, 0, response.Length, SocketFlags.None, new AsyncCallback(HandshakeSendCallback), null);
                 }
                 else
-                {
                     Close();
-                }
             }
             catch (Exception e)
             {
@@ -259,10 +221,7 @@ namespace Shadowsocks.Controller
 
         private void HandshakeSendCallback(IAsyncResult ar)
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 connection.EndSend(ar);
@@ -274,7 +233,7 @@ namespace Shadowsocks.Controller
                 // +-----+-----+-------+------+----------+----------+
                 // Skip first 3 bytes
                 // TODO validate
-                connection.BeginReceive(connetionRecvBuffer, 0, 3, 0, new AsyncCallback(handshakeReceive2Callback), null);
+                connection.BeginReceive(_connetionRecvBuffer, 0, 3, SocketFlags.None, new AsyncCallback(handshakeReceive2Callback), null);
             }
             catch (Exception e)
             {
@@ -285,26 +244,20 @@ namespace Shadowsocks.Controller
 
         private void handshakeReceive2Callback(IAsyncResult ar)
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 int bytesRead = connection.EndReceive(ar);
-
                 if (bytesRead >= 3)
                 {
-                    command = connetionRecvBuffer[1];
-                    if (command == 1)
+                    _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);
+                        connection.BeginSend(response, 0, response.Length, SocketFlags.None, new AsyncCallback(ResponseCallback), null);
                     }
-                    else if (command == 3)
-                    {
+                    else if (_command == 3)
                         HandleUDPAssociate();
-                    }
                 }
                 else
                 {
@@ -326,33 +279,31 @@ namespace Shadowsocks.Controller
             int port = endPoint.Port;
             byte[] response = new byte[4 + address.Length + 2];
             response[0] = 5;
-            if (endPoint.AddressFamily == AddressFamily.InterNetwork)
+            switch (endPoint.AddressFamily)
             {
-                response[3] = 1;
-            }
-            else if (endPoint.AddressFamily == AddressFamily.InterNetworkV6)
-            {
-                response[3] = 4;
+                case AddressFamily.InterNetwork:
+                    response[3] = 1;
+                    break;
+                case AddressFamily.InterNetworkV6:
+                    response[3] = 4;
+                    break;
             }
             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);
+            connection.BeginSend(response, 0, response.Length, SocketFlags.None, new AsyncCallback(ReadAll), true);
         }
 
         private void ReadAll(IAsyncResult ar)
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 if (ar.AsyncState != null)
                 {
                     connection.EndSend(ar);
                     Logging.Debug(remote.LocalEndPoint, remote.DestEndPoint, RecvSize, "TCP Relay");
-                    connection.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0, new AsyncCallback(ReadAll), null);
+                    connection.BeginReceive(_connetionRecvBuffer, 0, RecvSize, SocketFlags.None, new AsyncCallback(ReadAll), null);
                 }
                 else
                 {
@@ -360,12 +311,10 @@ namespace Shadowsocks.Controller
                     if (bytesRead > 0)
                     {
                         Logging.Debug(remote.LocalEndPoint, remote.DestEndPoint, RecvSize, "TCP Relay");
-                        connection.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0, new AsyncCallback(ReadAll), null);
+                        connection.BeginReceive(_connetionRecvBuffer, 0, RecvSize, SocketFlags.None, new AsyncCallback(ReadAll), null);
                     }
                     else
-                    {
                         Close();
-                    }
                 }
             }
             catch (Exception e)
@@ -380,10 +329,8 @@ namespace Shadowsocks.Controller
             try
             {
                 connection.EndSend(ar);
-
                 StartConnect();
             }
-
             catch (Exception e)
             {
                 Logging.LogUsefulException(e);
@@ -405,10 +352,7 @@ namespace Shadowsocks.Controller
         private class ServerTimer : Timer
         {
             public Server Server;
-
-            public ServerTimer(int p) : base(p)
-            {
-            }
+            public ServerTimer(int p) : base(p) { }
         }
 
         private void StartConnect()
@@ -429,17 +373,17 @@ namespace Shadowsocks.Controller
 
                 // Setting up proxy
                 IPEndPoint proxyEP;
-                if (config.useProxy)
+                if (_config.useProxy)
                 {
-                    parsed = IPAddress.TryParse(config.proxyServer, out ipAddress);
+                    parsed = IPAddress.TryParse(_config.proxyServer, out ipAddress);
                     if (!parsed)
                     {
-                        IPHostEntry ipHostInfo = Dns.GetHostEntry(config.proxyServer);
+                        IPHostEntry ipHostInfo = Dns.GetHostEntry(_config.proxyServer);
                         ipAddress = ipHostInfo.AddressList[0];
                     }
 
                     remote = new Socks5Proxy();
-                    proxyEP = new IPEndPoint(ipAddress, config.proxyPort);
+                    proxyEP = new IPEndPoint(ipAddress, _config.proxyPort);
                 }
                 else
                 {
@@ -455,7 +399,7 @@ namespace Shadowsocks.Controller
                 proxyTimer.DestEndPoint = destEP;
                 proxyTimer.Server = server;
 
-                proxyConnected = false;
+                _proxyConnected = false;
 
                 // Connect to the proxy server.
                 remote.BeginConnectProxy(proxyEP, new AsyncCallback(ProxyConnectCallback), proxyTimer);
@@ -469,7 +413,7 @@ namespace Shadowsocks.Controller
 
         private void proxyConnectTimer_Elapsed(object sender, ElapsedEventArgs e)
         {
-            if (proxyConnected || destConnected)
+            if (_proxyConnected || _destConnected)
             {
                 return;
             }
@@ -483,7 +427,7 @@ namespace Shadowsocks.Controller
         private void ProxyConnectCallback(IAsyncResult ar)
         {
             Server server = null;
-            if (closed)
+            if (_closed)
             {
                 return;
             }
@@ -499,19 +443,18 @@ namespace Shadowsocks.Controller
                 // Complete the connection.
                 remote.EndConnectProxy(ar);
 
-                proxyConnected = true;
+                _proxyConnected = true;
 
                 Logging.Debug($"Socket connected to proxy {remote.ProxyEndPoint}");
 
-
                 _startConnectTime = DateTime.Now;
                 ServerTimer connectTimer = new ServerTimer(3000);
                 connectTimer.AutoReset = false;
                 connectTimer.Elapsed += destConnectTimer_Elapsed;
                 connectTimer.Enabled = true;
                 connectTimer.Server = server;
-
-                destConnected = false;
+                
+                _destConnected = false;
                 // Connect to the remote endpoint.
                 remote.BeginConnectDest(destEP, new AsyncCallback(ConnectCallback), connectTimer);
             }
@@ -527,16 +470,14 @@ namespace Shadowsocks.Controller
 
         private void destConnectTimer_Elapsed(object sender, ElapsedEventArgs e)
         {
-            if (destConnected)
+            if (_destConnected)
             {
                 return;
             }
+
             Server server = ((ServerTimer)sender).Server;
             IStrategy strategy = controller.GetCurrentStrategy();
-            if (strategy != null)
-            {
-                strategy.SetFailure(server);
-            }
+            strategy?.SetFailure(server);
             Logging.Info($"{server.FriendlyName()} timed out");
             remote.Close();
             RetryConnect();
@@ -544,25 +485,19 @@ namespace Shadowsocks.Controller
 
         private void RetryConnect()
         {
-            if (retryCount < maxRetry)
+            if (_retryCount < MaxRetry)
             {
-                Logging.Debug($"Connection failed, retry ({retryCount})");
+                Logging.Debug($"Connection failed, retry ({_retryCount})");
                 StartConnect();
-                retryCount++;
+                _retryCount++;
             }
             else
-            {
                 Close();
-            }
         }
 
         private void ConnectCallback(IAsyncResult ar)
         {
-            Server server = null;
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 ServerTimer timer = (ServerTimer)ar.AsyncState;
@@ -573,15 +508,13 @@ namespace Shadowsocks.Controller
 
                 // Complete the connection.
                 remote.EndConnectDest(ar);
-
-                destConnected = true;
-
-                Logging.Debug($"Socket connected to {remote.DestEndPoint}");
+                
+                _destConnected = true;
 
                 var latency = DateTime.Now - _startConnectTime;
                 IStrategy strategy = controller.GetCurrentStrategy();
                 strategy?.UpdateLatency(server, latency);
-                tcprelay.UpdateLatency(server, latency);
+                _tcprelay.UpdateLatency(server, latency);
 
                 StartPipe();
             }
@@ -593,10 +526,7 @@ namespace Shadowsocks.Controller
                 if (server != null)
                 {
                     IStrategy strategy = controller.GetCurrentStrategy();
-                    if (strategy != null)
-                    {
-                        strategy.SetFailure(server);
-                    }
+                    strategy?.SetFailure(server);
                 }
                 Logging.LogUsefulException(e);
                 RetryConnect();
@@ -605,15 +535,12 @@ namespace Shadowsocks.Controller
 
         private void StartPipe()
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 _startReceivingTime = DateTime.Now;
-                remote.BeginReceive(remoteRecvBuffer, 0, RecvSize, 0, new AsyncCallback(PipeRemoteReceiveCallback), null);
-                connection.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0, new AsyncCallback(PipeConnectionReceiveCallback), null);
+                remote.BeginReceive(_remoteRecvBuffer, 0, RecvSize, SocketFlags.None, new AsyncCallback(PipeRemoteReceiveCallback), null);
+                connection.BeginReceive(_connetionRecvBuffer, 0, RecvSize, SocketFlags.None, new AsyncCallback(PipeConnectionReceiveCallback), null);
             }
             catch (Exception e)
             {
@@ -624,49 +551,30 @@ namespace Shadowsocks.Controller
 
         private void PipeRemoteReceiveCallback(IAsyncResult ar)
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 int bytesRead = remote.EndReceive(ar);
-                totalRead += bytesRead;
-                tcprelay.UpdateInboundCounter(server, bytesRead);
-
+                _totalRead += bytesRead;
+                _tcprelay.UpdateInboundCounter(server, bytesRead);
                 if (bytesRead > 0)
                 {
                     lastActivity = DateTime.Now;
                     int bytesToSend;
-                    lock (decryptionLock)
+                    lock (_decryptionLock)
                     {
-                        if (closed)
-                        {
-                            return;
-                        }
-                        encryptor.Decrypt(remoteRecvBuffer, bytesRead, remoteSendBuffer, out bytesToSend);
+                        if (_closed) return;
+                        encryptor.Decrypt(_remoteRecvBuffer, bytesRead, _remoteSendBuffer, out bytesToSend);
                     }
-                    Logging.Debug(remote.LocalEndPoint, remote.DestEndPoint, bytesToSend, "TCP Relay", "@PipeRemoteReceiveCallback() (download)");
-                    connection.BeginSend(remoteSendBuffer, 0, bytesToSend, 0, new AsyncCallback(PipeConnectionSendCallback), null);
-
+                    connection.BeginSend(_remoteSendBuffer, 0, bytesToSend, SocketFlags.None, new AsyncCallback(PipeConnectionSendCallback), null);
                     IStrategy strategy = controller.GetCurrentStrategy();
-                    if (strategy != null)
-                    {
-                        strategy.UpdateLastRead(server);
-                    }
+                    strategy?.UpdateLastRead(server);
                 }
                 else
                 {
                     connection.Shutdown(SocketShutdown.Send);
-                    connectionShutdown = true;
+                    _connectionShutdown = true;
                     CheckClose();
-
-                    //if (totalRead == 0)
-                    //{
-                    //    // closed before anything received, reports as failure
-                    //    // disable this feature
-                    //    controller.GetCurrentStrategy().SetFailure(this.server);
-                    //}
                 }
             }
             catch (Exception e)
@@ -678,39 +586,58 @@ namespace Shadowsocks.Controller
 
         private void PipeConnectionReceiveCallback(IAsyncResult ar)
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 int bytesRead = connection.EndReceive(ar);
-                totalWrite += bytesRead;
-
+                _totalWrite += bytesRead;
                 if (bytesRead > 0)
                 {
+                    int atyp = _connetionRecvBuffer[0];
+                    string dst_addr;
+                    int dst_port;
+                    switch (atyp)
+                    {
+                        case 1:  // IPv4 address, 4 bytes
+                            dst_addr = new IPAddress(_connetionRecvBuffer.Skip(1).Take(4).ToArray()).ToString();
+                            dst_port = (_connetionRecvBuffer[5] << 8) + _connetionRecvBuffer[6];
+                            if ( _config.isVerboseLogging ) {
+                                Logging.Info( $"connect to {dst_addr}:{dst_port}" );
+                            }
+                            break;
+                        case 3:  // domain name, length + str
+                            int len = _connetionRecvBuffer[1];
+                            dst_addr = System.Text.Encoding.UTF8.GetString(_connetionRecvBuffer, 2, len);
+                            dst_port = (_connetionRecvBuffer[len + 2] << 8) + _connetionRecvBuffer[len + 3];
+                            if ( _config.isVerboseLogging ) {
+                                Logging.Info( $"connect to {dst_addr}:{dst_port}" );
+                            }
+                            break;
+                        case 4:  // IPv6 address, 16 bytes
+                            dst_addr = new IPAddress(_connetionRecvBuffer.Skip(1).Take(16).ToArray()).ToString();
+                            dst_port = (_connetionRecvBuffer[17] << 8) + _connetionRecvBuffer[18];
+                            if ( _config.isVerboseLogging ) {
+                                Logging.Info( $"connect to [{dst_addr}]:{dst_port}" );
+                            }
+                            break;
+                    }
                     int bytesToSend;
-                    lock (encryptionLock)
+                    lock (_encryptionLock)
                     {
-                        if (closed)
-                        {
-                            return;
-                        }
-                        encryptor.Encrypt(connetionRecvBuffer, bytesRead, connetionSendBuffer, out bytesToSend);
+                        if (_closed) return;
+                        encryptor.Encrypt(_connetionRecvBuffer, bytesRead, _connetionSendBuffer, out bytesToSend);
                     }
-                    Logging.Debug(remote.LocalEndPoint, remote.DestEndPoint, bytesToSend, "TCP Relay", "@PipeConnectionReceiveCallback() (upload)");
-                    tcprelay.UpdateOutboundCounter(server, bytesToSend);
+                    _tcprelay.UpdateOutboundCounter(server, bytesToSend);
                     _startSendingTime = DateTime.Now;
                     _bytesToSend = bytesToSend;
-                    remote.BeginSend(connetionSendBuffer, 0, bytesToSend, 0, new AsyncCallback(PipeRemoteSendCallback), null);
-
+                    remote.BeginSend(_connetionSendBuffer, 0, bytesToSend, SocketFlags.None, new AsyncCallback(PipeRemoteSendCallback), null);
                     IStrategy strategy = controller.GetCurrentStrategy();
                     strategy?.UpdateLastWrite(server);
                 }
                 else
                 {
                     remote.Shutdown(SocketShutdown.Send);
-                    remoteShutdown = true;
+                    _remoteShutdown = true;
                     CheckClose();
                 }
             }
@@ -723,14 +650,11 @@ namespace Shadowsocks.Controller
 
         private void PipeRemoteSendCallback(IAsyncResult ar)
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 remote.EndSend(ar);
-                connection.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0, new AsyncCallback(PipeConnectionReceiveCallback), null);
+                connection.BeginReceive(_connetionRecvBuffer, 0, RecvSize, SocketFlags.None, new AsyncCallback(PipeConnectionReceiveCallback), null);
             }
             catch (Exception e)
             {
@@ -741,14 +665,11 @@ namespace Shadowsocks.Controller
 
         private void PipeConnectionSendCallback(IAsyncResult ar)
         {
-            if (closed)
-            {
-                return;
-            }
+            if (_closed) return;
             try
             {
                 connection.EndSend(ar);
-                remote.BeginReceive(remoteRecvBuffer, 0, RecvSize, 0, new AsyncCallback(PipeRemoteReceiveCallback), null);
+                remote.BeginReceive(_remoteRecvBuffer, 0, RecvSize, SocketFlags.None, new AsyncCallback(PipeRemoteReceiveCallback), null);
             }
             catch (Exception e)
             {

shadowsocks-csharp/Controller/ShadowsocksController.cs

@@ -5,7 +5,6 @@ using System.Net;
 using System.Net.Sockets;
 using System.Text;
 using System.Threading;
-using System.Threading.Tasks;
 using Newtonsoft.Json;
 
 using Shadowsocks.Controller.Strategy;
@@ -23,6 +22,7 @@ namespace Shadowsocks.Controller
         // interacts with low level logic
 
         private Thread _ramThread;
+        private Thread _trafficThread;
 
         private Listener _listener;
         private PACServer _pacServer;
@@ -35,6 +35,7 @@ namespace Shadowsocks.Controller
 
         public long inboundCounter = 0;
         public long outboundCounter = 0;
+        public QueueLast<TrafficPerSecond> traffic;
 
         private bool stopped = false;
 
@@ -45,10 +46,30 @@ namespace Shadowsocks.Controller
             public string Path;
         }
 
+        public class QueueLast<T> : Queue<T>
+        {
+            public T Last { get; private set; }
+            public new void Enqueue(T item)
+            {
+                Last = item;
+                base.Enqueue(item);
+            }
+        }
+
+        public class TrafficPerSecond
+        {
+            public long inboundCounter;
+            public long outboundCounter;
+            public long inboundIncreasement;
+            public long outboundIncreasement;
+        }
+
         public event EventHandler ConfigChanged;
         public event EventHandler EnableStatusChanged;
         public event EventHandler EnableGlobalChanged;
         public event EventHandler ShareOverLANStatusChanged;
+        public event EventHandler VerboseLoggingStatusChanged;
+        public event EventHandler TrafficChanged;
 
         // when user clicked Edit PAC, and PAC file has already created
         public event EventHandler<PathEventArgs> PACFileReadyToOpen;
@@ -66,6 +87,7 @@ namespace Shadowsocks.Controller
             StatisticsConfiguration = StatisticsStrategyConfiguration.Load();
             _strategyManager = new StrategyManager(this);
             StartReleasingMemory();
+            StartTrafficStatistics(60);
         }
 
         public void Start()
@@ -205,6 +227,15 @@ namespace Shadowsocks.Controller
             SaveConfig(_config);
         }
 
+        public void ToggleVerboseLogging(bool enabled)
+        {
+            _config.isVerboseLogging = enabled;
+            SaveConfig(_config);
+            if ( VerboseLoggingStatusChanged != null ) {
+                VerboseLoggingStatusChanged(this, new EventArgs());
+            }
+        }
+
         public void SelectServerIndex(int index)
         {
             _config.index = index;
@@ -327,7 +358,7 @@ namespace Shadowsocks.Controller
         {
             if (_config.availabilityStatistics)
             {
-                new Task(() => availabilityStatistics.UpdateLatency(server, (int) latency.TotalMilliseconds)).Start();
+                availabilityStatistics.UpdateLatency(server, (int)latency.TotalMilliseconds);
             }
         }
 
@@ -336,7 +367,7 @@ namespace Shadowsocks.Controller
             Interlocked.Add(ref inboundCounter, n);
             if (_config.availabilityStatistics)
             {
-                new Task(() => availabilityStatistics.UpdateInboundCounter(server, n)).Start();
+                availabilityStatistics.UpdateInboundCounter(server, n);
             }
         }
 
@@ -345,7 +376,7 @@ namespace Shadowsocks.Controller
             Interlocked.Add(ref outboundCounter, n);
             if (_config.availabilityStatistics)
             {
-                new Task(() => availabilityStatistics.UpdateOutboundCounter(server, n)).Start();
+                availabilityStatistics.UpdateOutboundCounter(server, n);
             }
         }
 
@@ -530,5 +561,41 @@ namespace Shadowsocks.Controller
             }
         }
 
+        private void StartTrafficStatistics(int queueMaxSize)
+        {
+            traffic = new QueueLast<TrafficPerSecond>();
+            for (int i = 0; i < queueMaxSize; i++)
+            {
+                traffic.Enqueue(new TrafficPerSecond());
+            }
+            _trafficThread = new Thread(new ThreadStart(() => TrafficStatistics(queueMaxSize)));
+            _trafficThread.IsBackground = true;
+            _trafficThread.Start();
+        }
+
+        private void TrafficStatistics(int queueMaxSize)
+        {
+            while (true)
+            {
+                TrafficPerSecond previous = traffic.Last;
+                TrafficPerSecond current = new TrafficPerSecond();
+                current.inboundCounter = inboundCounter;
+                current.outboundCounter = outboundCounter;
+                current.inboundIncreasement = inboundCounter - previous.inboundCounter;
+                current.outboundIncreasement = outboundCounter - previous.outboundCounter;
+
+                traffic.Enqueue(current);
+                if (traffic.Count > queueMaxSize)
+                    traffic.Dequeue();
+
+                if (TrafficChanged != null)
+                {
+                    TrafficChanged(this, new EventArgs());
+                }
+
+                Thread.Sleep(1000);
+            }
+        }
+
     }
 }

shadowsocks-csharp/Data/cn.txt

@@ -23,6 +23,7 @@ Show QRCode...=显示二维码...
 Scan QRCode from Screen...=扫描屏幕上的二维码...
 Availability Statistics=统计可用性
 Show Logs...=显示日志...
+Verbose Logging=详细记录日志
 Updates...=更新...
 Check for Updates...=检查更新
 Check for Updates at Startup=启动时检查更新
@@ -70,6 +71,8 @@ Change &Font=设置字体(&F)
 &Top Most=置顶(&T)
 &Show Toolbar=显示工具栏(&S)
 Log Viewer=日志查看器
+Inbound=入站
+Outbound=出站
 
 # QRCode Form
 
@@ -109,3 +112,5 @@ Failed to decode QRCode=无法解析二维码
 Failed to update registry=无法修改注册表
 System Proxy On: =系统代理已启用：
 Running: Port {0}=正在运行：端口 {0}
+Unexpect error, shadowsocks will be exit. Please report to=非预期错误，Shadowsocks将退出。请提交此错误到
+ 

shadowsocks-csharp/Model/Configuration.cs

@@ -24,6 +24,7 @@ namespace Shadowsocks.Model
         public bool useOnlinePac;
         public bool availabilityStatistics;
         public bool autoCheckUpdate;
+        public bool isVerboseLogging;
         public LogViewerConfig logViewer;
         public bool useProxy;
         public string proxyServer;

shadowsocks-csharp/Program.cs

@@ -21,6 +21,7 @@ namespace Shadowsocks
             Utils.ReleaseMemory(true);
             using (Mutex mutex = new Mutex(false, "Global\\Shadowsocks_" + Application.StartupPath.GetHashCode()))
             {
+                AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
                 Application.EnableVisualStyles();
                 Application.SetCompatibleTextRenderingDefault(false);
 
@@ -53,5 +54,19 @@ namespace Shadowsocks
                 Application.Run();
             }
         }
+
+        private static int exited = 0;
+        private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
+        {
+            if (Interlocked.Increment(ref exited) == 1)
+            {
+                Logging.Error(e.ExceptionObject?.ToString());
+                MessageBox.Show(I18N.GetString("Unexpect error, shadowsocks will be exit. Please report to") +
+                    " https://github.com/shadowsocks/shadowsocks-windows/issues " +
+                    Environment.NewLine + (e.ExceptionObject?.ToString()),
+                    "Shadowsocks Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                Application.Exit();
+            }
+        }
     }
 }

shadowsocks-csharp/Properties/Resources.Designer.cs

@@ -182,7 +182,27 @@ namespace Shadowsocks.Properties {
                 return ((System.Drawing.Bitmap)(obj));
             }
         }
-
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap ssIn24 {
+            get {
+                object obj = ResourceManager.GetObject("ssIn24", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap ssOut24 {
+            get {
+                object obj = ResourceManager.GetObject("ssOut24", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Bitmap.
         /// </summary>

shadowsocks-csharp/Properties/Resources.resx

@@ -148,6 +148,12 @@
   <data name="ss24" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\ss24.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="ssIn24" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\ssIn24.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="ssOut24" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\ssOut24.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
   <data name="ssw128" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\ssw128.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>

shadowsocks-csharp/Util/Util.cs

@@ -76,7 +76,8 @@ namespace Shadowsocks.Util
                 //
                 // just kidding
                 SetProcessWorkingSetSize(Process.GetCurrentProcess().Handle,
-                    (UIntPtr)0xFFFFFFFF, (UIntPtr)0xFFFFFFFF);
+                                         (UIntPtr)0xFFFFFFFF,
+                                         (UIntPtr)0xFFFFFFFF);
             }
         }
 
@@ -87,7 +88,8 @@ namespace Shadowsocks.Util
             using (MemoryStream sb = new MemoryStream())
             {
                 using (GZipStream input = new GZipStream(new MemoryStream(buf),
-                    CompressionMode.Decompress, false))
+                                                         CompressionMode.Decompress,
+                                                         false))
                 {
                     while ((n = input.Read(buffer, 0, buffer.Length)) > 0)
                     {
@@ -100,29 +102,49 @@ namespace Shadowsocks.Util
 
         public static string FormatBandwidth(long n)
         {
+            var result = GetBandwidthScale(n);
+            return $"{result.Item1:0.##}{result.Item2}";
+        }
+
+        /// <summary>
+        /// Return scaled bandwidth
+        /// </summary>
+        /// <param name="n">Raw bandwidth</param>
+        /// <returns>
+        /// Item1: float, bandwidth with suitable scale (eg. 56)
+        /// Item2: string, scale unit name (eg. KiB)
+        /// Item3: long, scale unit (eg. 1024)
+        /// </returns>
+        public static Tuple<float, string, long> GetBandwidthScale(long n)
+        {
+            long scale = 1;
             float f = n;
             string unit = "B";
             if (f > 1024)
             {
                 f = f / 1024;
+                scale <<= 10;
                 unit = "KiB";
             }
             if (f > 1024)
             {
                 f = f / 1024;
+                scale <<= 10;
                 unit = "MiB";
             }
             if (f > 1024)
             {
                 f = f / 1024;
+                scale <<= 10;
                 unit = "GiB";
             }
             if (f > 1024)
             {
                 f = f / 1024;
+                scale <<= 10;
                 unit = "TiB";
             }
-            return $"{f:0.##}{unit}";
+            return new Tuple<float, string, long>(f, unit, scale);
         }
 
         [DllImport("kernel32.dll")]

shadowsocks-csharp/View/LogForm.Designer.cs

@@ -29,6 +29,10 @@
         private void InitializeComponent()
         {
             this.components = new System.ComponentModel.Container();
+            System.Windows.Forms.DataVisualization.Charting.ChartArea chartArea1 = new System.Windows.Forms.DataVisualization.Charting.ChartArea();
+            System.Windows.Forms.DataVisualization.Charting.Legend legend1 = new System.Windows.Forms.DataVisualization.Charting.Legend();
+            System.Windows.Forms.DataVisualization.Charting.Series series1 = new System.Windows.Forms.DataVisualization.Charting.Series();
+            System.Windows.Forms.DataVisualization.Charting.Series series2 = new System.Windows.Forms.DataVisualization.Charting.Series();
             this.LogMessageTextBox = new System.Windows.Forms.TextBox();
             this.MainMenu = new System.Windows.Forms.MainMenu(this.components);
             this.FileMenuItem = new System.Windows.Forms.MenuItem();
@@ -47,8 +51,15 @@
             this.WrapTextCheckBox = new System.Windows.Forms.CheckBox();
             this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
             this.ToolbarFlowLayoutPanel = new System.Windows.Forms.FlowLayoutPanel();
+            this.splitContainer1 = new System.Windows.Forms.SplitContainer();
+            this.trafficChart = new System.Windows.Forms.DataVisualization.Charting.Chart();
             this.tableLayoutPanel1.SuspendLayout();
             this.ToolbarFlowLayoutPanel.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).BeginInit();
+            this.splitContainer1.Panel1.SuspendLayout();
+            this.splitContainer1.Panel2.SuspendLayout();
+            this.splitContainer1.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.trafficChart)).BeginInit();
             this.SuspendLayout();
             // 
             // LogMessageTextBox
@@ -57,13 +68,13 @@
             this.LogMessageTextBox.Dock = System.Windows.Forms.DockStyle.Fill;
             this.LogMessageTextBox.Font = new System.Drawing.Font("Consolas", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.LogMessageTextBox.ForeColor = System.Drawing.Color.White;
-            this.LogMessageTextBox.Location = new System.Drawing.Point(3, 40);
+            this.LogMessageTextBox.Location = new System.Drawing.Point(0, 0);
             this.LogMessageTextBox.MaxLength = 2147483647;
             this.LogMessageTextBox.Multiline = true;
             this.LogMessageTextBox.Name = "LogMessageTextBox";
             this.LogMessageTextBox.ReadOnly = true;
             this.LogMessageTextBox.ScrollBars = System.Windows.Forms.ScrollBars.Both;
-            this.LogMessageTextBox.Size = new System.Drawing.Size(378, 131);
+            this.LogMessageTextBox.Size = new System.Drawing.Size(378, 74);
             this.LogMessageTextBox.TabIndex = 0;
             // 
             // MainMenu
@@ -144,9 +155,9 @@
             this.TopMostCheckBox.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
             | System.Windows.Forms.AnchorStyles.Left)));
             this.TopMostCheckBox.AutoSize = true;
-            this.TopMostCheckBox.Location = new System.Drawing.Point(247, 3);
+            this.TopMostCheckBox.Location = new System.Drawing.Point(249, 3);
             this.TopMostCheckBox.Name = "TopMostCheckBox";
-            this.TopMostCheckBox.Size = new System.Drawing.Size(71, 25);
+            this.TopMostCheckBox.Size = new System.Drawing.Size(72, 23);
             this.TopMostCheckBox.TabIndex = 3;
             this.TopMostCheckBox.Text = "&Top Most";
             this.TopMostCheckBox.UseVisualStyleBackColor = true;
@@ -157,7 +168,7 @@
             this.ChangeFontButton.AutoSize = true;
             this.ChangeFontButton.Location = new System.Drawing.Point(84, 3);
             this.ChangeFontButton.Name = "ChangeFontButton";
-            this.ChangeFontButton.Size = new System.Drawing.Size(75, 25);
+            this.ChangeFontButton.Size = new System.Drawing.Size(75, 23);
             this.ChangeFontButton.TabIndex = 2;
             this.ChangeFontButton.Text = "&Font";
             this.ChangeFontButton.UseVisualStyleBackColor = true;
@@ -168,7 +179,7 @@
             this.CleanLogsButton.AutoSize = true;
             this.CleanLogsButton.Location = new System.Drawing.Point(3, 3);
             this.CleanLogsButton.Name = "CleanLogsButton";
-            this.CleanLogsButton.Size = new System.Drawing.Size(75, 25);
+            this.CleanLogsButton.Size = new System.Drawing.Size(75, 23);
             this.CleanLogsButton.TabIndex = 1;
             this.CleanLogsButton.Text = "&Clean Logs";
             this.CleanLogsButton.UseVisualStyleBackColor = true;
@@ -181,7 +192,7 @@
             this.WrapTextCheckBox.AutoSize = true;
             this.WrapTextCheckBox.Location = new System.Drawing.Point(165, 3);
             this.WrapTextCheckBox.Name = "WrapTextCheckBox";
-            this.WrapTextCheckBox.Size = new System.Drawing.Size(76, 25);
+            this.WrapTextCheckBox.Size = new System.Drawing.Size(78, 23);
             this.WrapTextCheckBox.TabIndex = 0;
             this.WrapTextCheckBox.Text = "&Wrap Text";
             this.WrapTextCheckBox.UseVisualStyleBackColor = true;
@@ -191,15 +202,15 @@
             // 
             this.tableLayoutPanel1.ColumnCount = 1;
             this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
-            this.tableLayoutPanel1.Controls.Add(this.LogMessageTextBox, 0, 1);
             this.tableLayoutPanel1.Controls.Add(this.ToolbarFlowLayoutPanel, 0, 0);
+            this.tableLayoutPanel1.Controls.Add(this.splitContainer1, 0, 1);
             this.tableLayoutPanel1.Dock = System.Windows.Forms.DockStyle.Fill;
             this.tableLayoutPanel1.Location = new System.Drawing.Point(0, 0);
             this.tableLayoutPanel1.Name = "tableLayoutPanel1";
             this.tableLayoutPanel1.RowCount = 2;
             this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle());
-            this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle());
-            this.tableLayoutPanel1.Size = new System.Drawing.Size(384, 174);
+            this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
+            this.tableLayoutPanel1.Size = new System.Drawing.Size(384, 161);
             this.tableLayoutPanel1.TabIndex = 2;
             // 
             // ToolbarFlowLayoutPanel
@@ -212,17 +223,73 @@
             this.ToolbarFlowLayoutPanel.Dock = System.Windows.Forms.DockStyle.Fill;
             this.ToolbarFlowLayoutPanel.Location = new System.Drawing.Point(3, 3);
             this.ToolbarFlowLayoutPanel.Name = "ToolbarFlowLayoutPanel";
-            this.ToolbarFlowLayoutPanel.Size = new System.Drawing.Size(378, 31);
+            this.ToolbarFlowLayoutPanel.Size = new System.Drawing.Size(378, 29);
             this.ToolbarFlowLayoutPanel.TabIndex = 2;
             // 
+            // splitContainer1
+            // 
+            this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.splitContainer1.Location = new System.Drawing.Point(3, 38);
+            this.splitContainer1.Name = "splitContainer1";
+            this.splitContainer1.Orientation = System.Windows.Forms.Orientation.Horizontal;
+            // 
+            // splitContainer1.Panel1
+            // 
+            this.splitContainer1.Panel1.Controls.Add(this.LogMessageTextBox);
+            // 
+            // splitContainer1.Panel2
+            // 
+            this.splitContainer1.Panel2.Controls.Add(this.trafficChart);
+            this.splitContainer1.Size = new System.Drawing.Size(378, 120);
+            this.splitContainer1.SplitterDistance = 74;
+            this.splitContainer1.TabIndex = 3;
+            // 
+            // trafficChart
+            // 
+            chartArea1.AxisX.LabelStyle.Enabled = false;
+            chartArea1.AxisX.MajorGrid.Interval = 5D;
+            chartArea1.AxisX.MajorGrid.LineColor = System.Drawing.Color.LightGray;
+            chartArea1.AxisX.MajorTickMark.Enabled = false;
+            chartArea1.AxisY.IntervalAutoMode = System.Windows.Forms.DataVisualization.Charting.IntervalAutoMode.VariableCount;
+            chartArea1.AxisY.LabelAutoFitMaxFontSize = 8;
+            chartArea1.AxisY.LabelStyle.Interval = 0D;
+            chartArea1.AxisY.MajorGrid.LineColor = System.Drawing.Color.LightGray;
+            chartArea1.AxisY.MajorTickMark.Enabled = false;
+            chartArea1.AxisY2.MajorGrid.LineColor = System.Drawing.Color.LightGray;
+            chartArea1.AxisY2.Minimum = 0D;
+            chartArea1.Name = "ChartArea1";
+            this.trafficChart.ChartAreas.Add(chartArea1);
+            this.trafficChart.Dock = System.Windows.Forms.DockStyle.Fill;
+            legend1.MaximumAutoSize = 25F;
+            legend1.Name = "Legend1";
+            this.trafficChart.Legends.Add(legend1);
+            this.trafficChart.Location = new System.Drawing.Point(0, 0);
+            this.trafficChart.Name = "trafficChart";
+            this.trafficChart.Palette = System.Windows.Forms.DataVisualization.Charting.ChartColorPalette.None;
+            series1.ChartArea = "ChartArea1";
+            series1.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line;
+            series1.IsXValueIndexed = true;
+            series1.Legend = "Legend1";
+            series1.Name = "Inbound";
+            series2.ChartArea = "ChartArea1";
+            series2.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line;
+            series2.IsXValueIndexed = true;
+            series2.Legend = "Legend1";
+            series2.Name = "Outbound";
+            this.trafficChart.Series.Add(series1);
+            this.trafficChart.Series.Add(series2);
+            this.trafficChart.Size = new System.Drawing.Size(378, 42);
+            this.trafficChart.TabIndex = 0;
+            this.trafficChart.Text = "chart1";
+            // 
             // LogForm
             // 
-            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(384, 174);
+            this.ClientSize = new System.Drawing.Size(384, 161);
             this.Controls.Add(this.tableLayoutPanel1);
             this.Menu = this.MainMenu;
-            this.MinimumSize = new System.Drawing.Size(400, 213);
+            this.MinimumSize = new System.Drawing.Size(400, 200);
             this.Name = "LogForm";
             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
             this.Text = "Log Viewer";
@@ -233,6 +300,12 @@
             this.tableLayoutPanel1.PerformLayout();
             this.ToolbarFlowLayoutPanel.ResumeLayout(false);
             this.ToolbarFlowLayoutPanel.PerformLayout();
+            this.splitContainer1.Panel1.ResumeLayout(false);
+            this.splitContainer1.Panel1.PerformLayout();
+            this.splitContainer1.Panel2.ResumeLayout(false);
+            ((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).EndInit();
+            this.splitContainer1.ResumeLayout(false);
+            ((System.ComponentModel.ISupportInitialize)(this.trafficChart)).EndInit();
             this.ResumeLayout(false);
 
         }
@@ -257,5 +330,7 @@
         private System.Windows.Forms.FlowLayoutPanel ToolbarFlowLayoutPanel;
         private System.Windows.Forms.MenuItem MenuItemSeparater;
         private System.Windows.Forms.MenuItem ShowToolbarMenuItem;
+        private System.Windows.Forms.SplitContainer splitContainer1;
+        private System.Windows.Forms.DataVisualization.Charting.Chart trafficChart;
     }
 }

shadowsocks-csharp/View/LogForm.cs

@@ -2,6 +2,9 @@
 using System.Drawing;
 using System.IO;
 using System.Windows.Forms;
+using System.Windows.Forms.DataVisualization.Charting;
+using System.Collections.Generic;
+using System.Linq;
 
 using Shadowsocks.Controller;
 using Shadowsocks.Properties;
@@ -18,6 +21,15 @@ namespace Shadowsocks.View
         const int BACK_OFFSET = 65536;
         ShadowsocksController controller;
 
+        #region chart
+        List<float> inboundPoints = new List<float>();
+        List<float> outboundPoints = new List<float>();
+        long maxSpeed = 0;
+        Tuple<float, string, long> bandwidthScale = new Tuple<float, string, long>(0, "B", 1);
+        TextAnnotation inboundAnnotation = new TextAnnotation();
+        TextAnnotation outboundAnnotation = new TextAnnotation();
+        #endregion
+
         public LogForm(ShadowsocksController controller, string filename)
         {
             this.controller = controller;
@@ -30,7 +42,8 @@ namespace Shadowsocks.View
             {
                 config = new LogViewerConfig();
             }
-            else {
+            else
+            {
                 topMostTrigger = config.topMost;
                 wrapTextTrigger = config.wrapText;
                 toolbarTrigger = config.toolbarShown;
@@ -39,9 +52,54 @@ namespace Shadowsocks.View
                 LogMessageTextBox.Font = config.GetFont();
             }
 
+            controller.TrafficChanged += controller_TrafficChanged;
+
             UpdateTexts();
         }
 
+        private void controller_TrafficChanged(object sender, EventArgs e)
+        {
+            inboundPoints.Clear();
+            outboundPoints.Clear();
+            foreach (var trafficPerSecond in controller.traffic)
+            {
+                inboundPoints.Add(trafficPerSecond.inboundIncreasement);
+                outboundPoints.Add(trafficPerSecond.outboundIncreasement);
+                maxSpeed = Math.Max(maxSpeed, Math.Max(trafficPerSecond.inboundIncreasement, trafficPerSecond.outboundIncreasement));
+            }
+
+            bandwidthScale = Utils.GetBandwidthScale(maxSpeed);
+
+            //rescale the original data points, since it is List<float>, .ForEach does not work
+            inboundPoints = inboundPoints.Select(p => p / bandwidthScale.Item3).ToList();
+            outboundPoints = outboundPoints.Select(p => p / bandwidthScale.Item3).ToList();
+
+            try
+            {
+                if (trafficChart.InvokeRequired)
+                {
+                    trafficChart.Invoke(new Action(() =>
+                    {
+                        trafficChart.Series["Inbound"].Points.DataBindY(inboundPoints);
+                        trafficChart.Series["Outbound"].Points.DataBindY(outboundPoints);
+                        trafficChart.ChartAreas[0].AxisY.LabelStyle.Format = "{0:0.##} " + bandwidthScale.Item2;
+                        inboundAnnotation.AnchorDataPoint = trafficChart.Series["Inbound"].Points.Last();
+                        inboundAnnotation.Text = Utils.FormatBandwidth(controller.traffic.Last.inboundIncreasement);
+                        outboundAnnotation.AnchorDataPoint = trafficChart.Series["Outbound"].Points.Last();
+                        outboundAnnotation.Text = Utils.FormatBandwidth(controller.traffic.Last.outboundIncreasement);
+                        trafficChart.Annotations.Clear();
+                        trafficChart.Annotations.Add(inboundAnnotation);
+                        trafficChart.Annotations.Add(outboundAnnotation);
+                    }));
+                }
+            }
+            catch (ObjectDisposedException ex)
+            {
+                // suppress the thread race error:
+                // when closing the form but the Invoked Action is still working and cause 'Chart is Disposed' exception
+            }
+        }
+
         private void UpdateTexts()
         {
             FileMenuItem.Text = I18N.GetString("&File");
@@ -58,6 +116,9 @@ namespace Shadowsocks.View
             TopMostMenuItem.Text = I18N.GetString("&Top Most");
             ShowToolbarMenuItem.Text = I18N.GetString("&Show Toolbar");
             Text = I18N.GetString("Log Viewer");
+            // traffic chart
+            trafficChart.Series["Inbound"].LegendText = I18N.GetString("Inbound");
+            trafficChart.Series["Outbound"].LegendText = I18N.GetString("Outbound");
         }
 
         private void Timer_Tick(object sender, EventArgs e)
@@ -144,6 +205,7 @@ namespace Shadowsocks.View
         private void LogForm_FormClosing(object sender, FormClosingEventArgs e)
         {
             timer.Stop();
+            controller.TrafficChanged -= controller_TrafficChanged;
             LogViewerConfig config = controller.GetConfigurationCopy().logViewer;
             if (config == null)
                 config = new LogViewerConfig();

shadowsocks-csharp/View/LogForm.resx

@@ -144,4 +144,7 @@
   <metadata name="$this.Locked" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>
+  <metadata name="$this.TrayHeight" type="System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>39</value>
+  </metadata>
 </root>

shadowsocks-csharp/View/MenuViewController.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Drawing;
+using System.Drawing.Imaging;
 using System.Windows.Forms;
 
 using ZXing;
@@ -25,6 +26,8 @@ namespace Shadowsocks.View
         private UpdateChecker updateChecker;
 
         private NotifyIcon _notifyIcon;
+        private Bitmap icon_baseBitmap;
+        private Icon icon_base, icon_in, icon_out, icon_both, targetIcon;
         private ContextMenu contextMenu1;
 
         private bool _isFirstRun;
@@ -46,6 +49,7 @@ namespace Shadowsocks.View
         private MenuItem editOnlinePACItem;
         private MenuItem autoCheckUpdatesToggleItem;
         private MenuItem proxyItem;
+        private MenuItem VerboseLoggingToggleItem;
         private ConfigForm configForm;
         private ProxyForm proxyForm;
         private List<LogForm> logForms = new List<LogForm>();
@@ -63,6 +67,7 @@ namespace Shadowsocks.View
             controller.PACFileReadyToOpen += controller_FileReadyToOpen;
             controller.UserRuleFileReadyToOpen += controller_FileReadyToOpen;
             controller.ShareOverLANStatusChanged += controller_ShareOverLANStatusChanged;
+            controller.VerboseLoggingStatusChanged += controller_VerboseLoggingStatusChanged;
             controller.EnableGlobalChanged += controller_EnableGlobalChanged;
             controller.Errored += controller_Errored;
             controller.UpdatePACFromGFWListCompleted += controller_UpdatePACFromGFWListCompleted;
@@ -76,6 +81,7 @@ namespace Shadowsocks.View
             _notifyIcon.MouseClick += notifyIcon1_Click;
             _notifyIcon.MouseDoubleClick += notifyIcon1_DoubleClick;
             _notifyIcon.BalloonTipClosed += _notifyIcon_BalloonTipClosed;
+            controller.TrafficChanged += controller_TrafficChanged;
 
             this.updateChecker = new UpdateChecker();
             updateChecker.CheckUpdateCompleted += updateChecker_CheckUpdateCompleted;
@@ -96,6 +102,32 @@ namespace Shadowsocks.View
             }
         }
 
+        private void controller_TrafficChanged(object sender, EventArgs e)
+        {
+            if (icon_baseBitmap == null)
+                return;
+
+            Icon newIcon;
+
+            bool hasInbound = controller.traffic.Last.inboundIncreasement > 0;
+            bool hasOutbound = controller.traffic.Last.outboundIncreasement > 0;
+
+            if (hasInbound && hasOutbound)
+                newIcon = icon_both;
+            else if (hasInbound)
+                newIcon = icon_in;
+            else if (hasOutbound)
+                newIcon = icon_out;
+            else
+                newIcon = icon_base;
+
+            if (newIcon != this.targetIcon)
+            {
+                this.targetIcon = newIcon;
+                _notifyIcon.Icon = newIcon;
+            }
+        }
+
         void controller_Errored(object sender, System.IO.ErrorEventArgs e)
         {
             MessageBox.Show(e.GetException().ToString(), String.Format(I18N.GetString("Shadowsocks Error: {0}"), e.GetException().Message));
@@ -107,26 +139,32 @@ namespace Shadowsocks.View
             Graphics graphics = Graphics.FromHwnd(IntPtr.Zero);
             dpi = (int)graphics.DpiX;
             graphics.Dispose();
-            Bitmap icon = null;
+            icon_baseBitmap = null;
             if (dpi < 97)
             {
                 // dpi = 96;
-                icon = Resources.ss16;
+                icon_baseBitmap = Resources.ss16;
             }
             else if (dpi < 121)
             {
                 // dpi = 120;
-                icon = Resources.ss20;
+                icon_baseBitmap = Resources.ss20;
             }
             else
             {
-                icon = Resources.ss24;
+                icon_baseBitmap = Resources.ss24;
             }
             Configuration config = controller.GetConfigurationCopy();
             bool enabled = config.enabled;
             bool global = config.global;
-            icon = getTrayIconByState(icon, enabled, global);
-            _notifyIcon.Icon = Icon.FromHandle(icon.GetHicon());
+            icon_baseBitmap = getTrayIconByState(icon_baseBitmap, enabled, global);
+
+            icon_base = Icon.FromHandle(icon_baseBitmap.GetHicon());
+            targetIcon = icon_base;
+            icon_in = Icon.FromHandle(AddBitmapOverlay(icon_baseBitmap, Resources.ssIn24).GetHicon());
+            icon_out = Icon.FromHandle(AddBitmapOverlay(icon_baseBitmap, Resources.ssOut24).GetHicon());
+            icon_both = Icon.FromHandle(AddBitmapOverlay(icon_baseBitmap, Resources.ssIn24, Resources.ssOut24).GetHicon());
+            _notifyIcon.Icon = targetIcon;
 
             string serverInfo = null;
             if (controller.GetCurrentStrategy() != null)
@@ -179,6 +217,19 @@ namespace Shadowsocks.View
             return iconCopy;
         }
 
+        private Bitmap AddBitmapOverlay(Bitmap original, params Bitmap[] overlays)
+        {
+            Bitmap bitmap = new Bitmap(original.Width, original.Height, PixelFormat.Format64bppArgb);
+            Graphics canvas = Graphics.FromImage(bitmap);
+            canvas.DrawImage(original, new Point(0, 0));
+            foreach (Bitmap overlay in overlays)
+            {
+                canvas.DrawImage(new Bitmap(overlay, original.Size), new Point(0, 0));
+            }
+            canvas.Save();
+            return bitmap;
+        }
+
         private MenuItem CreateMenuItem(string text, EventHandler click)
         {
             return new MenuItem(I18N.GetString(text), click);
@@ -219,6 +270,7 @@ namespace Shadowsocks.View
                 this.ShareOverLANItem = CreateMenuItem("Allow Clients from LAN", new EventHandler(this.ShareOverLANItem_Click)),
                 new MenuItem("-"),
                 CreateMenuItem("Show Logs...", new EventHandler(this.ShowLogItem_Click)),
+                this.VerboseLoggingToggleItem = CreateMenuItem( "Verbose Logging", new EventHandler(this.VerboseLoggingToggleItem_Click) ),
                 CreateMenuGroup("Updates...", new MenuItem[] {
                     CreateMenuItem("Check for Updates...", new EventHandler(this.checkUpdatesItem_Click)),
                     new MenuItem("-"),
@@ -247,6 +299,10 @@ namespace Shadowsocks.View
             ShareOverLANItem.Checked = controller.GetConfigurationCopy().shareOverLan;
         }
 
+        void controller_VerboseLoggingStatusChanged(object sender, EventArgs e) {
+            VerboseLoggingToggleItem.Checked = controller.GetConfigurationCopy().isVerboseLogging;
+        }
+
         void controller_EnableGlobalChanged(object sender, EventArgs e)
         {
             globalModeItem.Checked = controller.GetConfigurationCopy().global;
@@ -323,6 +379,7 @@ namespace Shadowsocks.View
             globalModeItem.Checked = config.global;
             PACModeItem.Checked = !config.global;
             ShareOverLANItem.Checked = config.shareOverLan;
+            VerboseLoggingToggleItem.Checked = config.isVerboseLogging;
             AutoStartupItem.Checked = AutoStartup.Check();
             onlinePACItem.Checked = onlinePACItem.Enabled && config.useOnlinePac;
             localPACItem.Checked = !onlinePACItem.Checked;
@@ -550,6 +607,11 @@ namespace Shadowsocks.View
             logForms.Add(f);
         }
 
+        private void VerboseLoggingToggleItem_Click( object sender, EventArgs e ) {
+            VerboseLoggingToggleItem.Checked = ! VerboseLoggingToggleItem.Checked;
+            controller.ToggleVerboseLogging( VerboseLoggingToggleItem.Checked );
+        }
+
         private void StatisticsConfigItem_Click(object sender, EventArgs e)
         {
             StatisticsStrategyConfigurationForm form = new StatisticsStrategyConfigurationForm(controller);

shadowsocks-csharp/packages.config

@@ -3,11 +3,6 @@
   <package id="Caseless.Fody" version="1.4.1" targetFramework="net40-client" developmentDependency="true" />
   <package id="Costura.Fody" version="1.3.3.0" targetFramework="net40-client" developmentDependency="true" />
   <package id="Fody" version="1.29.4" targetFramework="net40-client" developmentDependency="true" />
-  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net40-client" />
-  <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net40-client" />
-  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net40-client" />
-  <package id="Microsoft.Net.Http" version="2.0.20710.0" targetFramework="net4-client" />
   <package id="Newtonsoft.Json" version="8.0.2" targetFramework="net40-client" />
   <package id="StringEx.CS" version="0.2" targetFramework="net40-client" />
-  <package id="System.Net.Http" version="2.0.20710.0" targetFramework="net40-client" />
 </packages>

shadowsocks-csharp/shadowsocks-csharp.csproj

@@ -66,18 +66,6 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="Microsoft.VisualBasic" />
     <Reference Include="Newtonsoft.Json, Version=8.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>3rd\Newtonsoft.Json.8.0.2\lib\net40\Newtonsoft.Json.dll</HintPath>
@@ -88,27 +76,7 @@
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
-    <Reference Include="System.IO, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Bcl.1.1.10\lib\net40\System.IO.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System.Net" />
-    <Reference Include="System.Net.Http, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Net.Http.2.0.20710.0\lib\net40\System.Net.Http.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="System.Net.Http.WebRequest, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Net.Http.2.0.20710.0\lib\net40\System.Net.Http.WebRequest.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="System.Runtime, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Bcl.1.1.10\lib\net40\System.Runtime.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="System.Threading.Tasks, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>3rd\Microsoft.Bcl.1.1.10\lib\net40\System.Threading.Tasks.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System.Windows.Forms" />
     <Reference Include="System.Windows.Forms.DataVisualization" />
     <Reference Include="System.Xaml" />
@@ -303,6 +271,8 @@
     <Content Include="FodyWeavers.xml">
       <SubType>Designer</SubType>
     </Content>
+    <Content Include="Resources\ssIn24.png" />
+    <Content Include="Resources\ssOut24.png" />
     <Content Include="shadowsocks.ico" />
   </ItemGroup>
   <ItemGroup>
@@ -342,10 +312,8 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
     <Error Condition="!Exists('3rd\Fody.1.29.4\build\portable-net+sl+win+wpa+wp\Fody.targets')" Text="$([System.String]::Format('$(ErrorText)', '3rd\Fody.1.29.4\build\portable-net+sl+win+wpa+wp\Fody.targets'))" />
   </Target>
-  <Import Project="3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
   <Import Project="3rd\Fody.1.29.4\build\portable-net+sl+win+wpa+wp\Fody.targets" Condition="Exists('3rd\Fody.1.29.4\build\portable-net+sl+win+wpa+wp\Fody.targets')" />
   <UsingTask TaskName="CosturaCleanup" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll" TaskFactory="CodeTaskFactory">
     <ParameterGroup>

test/packages.config

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
-  <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
-  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
-  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
-  <package id="System.Net.Http" version="4.0.0" targetFramework="net45" />
-</packages>

test/test.csproj

@@ -35,29 +35,9 @@
     <StartupObject />
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\shadowsocks-csharp\3rd\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\shadowsocks-csharp\3rd\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\shadowsocks-csharp\3rd\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http" />
-    <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\shadowsocks-csharp\3rd\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Extensions.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="System.Net.Http.Primitives, Version=4.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\shadowsocks-csharp\3rd\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Primitives.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
   </ItemGroup>
   <Choose>
@@ -82,9 +62,6 @@
       <Name>shadowsocks-csharp</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup>
-    <None Include="packages.config" />
-  </ItemGroup>
   <Choose>
     <When Condition="'$(VisualStudioVersion)' == '10.0' And '$(IsCodedUITest)' == 'True'">
       <ItemGroup>
@@ -105,13 +82,6 @@
   </Choose>
   <Import Project="$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets" Condition="Exists('$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets')" />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Import Project="..\shadowsocks-csharp\3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\shadowsocks-csharp\3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\shadowsocks-csharp\3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\shadowsocks-csharp\3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
-  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">