update CHANGES and bump version

invalid URLs will be ignored

CHANGES

@@ -1,3 +1,8 @@
+4.0.1 2017-04-08
+- Fix UDP relay
+- Allow to add multiple servers via Shadowsocks URL
+- Bug fixes and improvements
+
 4.0 2017-04-04
 - Add AEAD ciphers support, removed OTA
 - I18N: add Japanese support, update Traditional Chinese strings

shadowsocks-csharp/Controller/Service/PortForwarder.cs

@@ -7,11 +7,11 @@ namespace Shadowsocks.Controller
 {
     class PortForwarder : Listener.Service
     {
-        int _targetPort;
+        private readonly int _targetPort;
 
         public PortForwarder(int targetPort)
         {
-            this._targetPort = targetPort;
+            _targetPort = targetPort;
         }
 
         public override bool Handle(byte[] firstPacket, int length, Socket socket, object state)
@@ -20,11 +20,11 @@ namespace Shadowsocks.Controller
             {
                 return false;
             }
-            new Handler().Start(firstPacket, length, socket, this._targetPort);
+            new Handler().Start(firstPacket, length, socket, _targetPort);
             return true;
         }
 
-        class Handler
+        private class Handler
         {
             private byte[] _firstPacket;
             private int _firstPacketLength;
@@ -33,7 +33,7 @@ namespace Shadowsocks.Controller
             private bool _closed = false;
             private bool _localShutdown = false;
             private bool _remoteShutdown = false;
-            public const int RecvSize = 16384;
+            private const int RecvSize = 2048;
             // remote receive buffer
             private byte[] remoteRecvBuffer = new byte[RecvSize];
             // connection receive buffer
@@ -44,9 +44,9 @@ namespace Shadowsocks.Controller
 
             public void Start(byte[] firstPacket, int length, Socket socket, int targetPort)
             {
-                this._firstPacket = firstPacket;
-                this._firstPacketLength = length;
-                this._local = socket;
+                _firstPacket = firstPacket;
+                _firstPacketLength = length;
+                _local = socket;
                 try
                 {
                     EndPoint remoteEP = SocketUtil.GetEndPoint("127.0.0.1", targetPort);
@@ -58,7 +58,7 @@ namespace Shadowsocks.Controller
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -77,7 +77,7 @@ namespace Shadowsocks.Controller
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -89,12 +89,12 @@ namespace Shadowsocks.Controller
                 }
                 try
                 {
-                    _remote.BeginSend(_firstPacket, 0, _firstPacketLength, 0, new AsyncCallback(StartPipe), null);
+                    _remote.BeginSend(_firstPacket, 0, _firstPacketLength, 0, StartPipe, null);
                 }
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -108,14 +108,14 @@ namespace Shadowsocks.Controller
                 {
                     _remote.EndSend(ar);
                     _remote.BeginReceive(remoteRecvBuffer, 0, RecvSize, 0,
-                        new AsyncCallback(PipeRemoteReceiveCallback), null);
+                        PipeRemoteReceiveCallback, null);
                     _local.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0,
-                        new AsyncCallback(PipeConnectionReceiveCallback), null);
+                        PipeConnectionReceiveCallback, null);
                 }
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -128,10 +128,9 @@ namespace Shadowsocks.Controller
                 try
                 {
                     int bytesRead = _remote.EndReceive(ar);
-
                     if (bytesRead > 0)
                     {
-                        _local.BeginSend(remoteRecvBuffer, 0, bytesRead, 0, new AsyncCallback(PipeConnectionSendCallback), null);
+                        _local.BeginSend(remoteRecvBuffer, 0, bytesRead, 0, PipeConnectionSendCallback, null);
                     }
                     else
                     {
@@ -143,7 +142,7 @@ namespace Shadowsocks.Controller
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -156,10 +155,9 @@ namespace Shadowsocks.Controller
                 try
                 {
                     int bytesRead = _local.EndReceive(ar);
-
                     if (bytesRead > 0)
                     {
-                        _remote.BeginSend(connetionRecvBuffer, 0, bytesRead, 0, new AsyncCallback(PipeRemoteSendCallback), null);
+                        _remote.BeginSend(connetionRecvBuffer, 0, bytesRead, 0, PipeRemoteSendCallback, null);
                     }
                     else
                     {
@@ -171,7 +169,7 @@ namespace Shadowsocks.Controller
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -184,13 +182,13 @@ namespace Shadowsocks.Controller
                 try
                 {
                     _remote.EndSend(ar);
-                    _local.BeginReceive(this.connetionRecvBuffer, 0, RecvSize, 0,
-                        new AsyncCallback(PipeConnectionReceiveCallback), null);
+                    _local.BeginReceive(connetionRecvBuffer, 0, RecvSize, 0,
+                        PipeConnectionReceiveCallback, null);
                 }
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -203,13 +201,13 @@ namespace Shadowsocks.Controller
                 try
                 {
                     _local.EndSend(ar);
-                    _remote.BeginReceive(this.remoteRecvBuffer, 0, RecvSize, 0,
-                        new AsyncCallback(PipeRemoteReceiveCallback), null);
+                    _remote.BeginReceive(remoteRecvBuffer, 0, RecvSize, 0,
+                        PipeRemoteReceiveCallback, null);
                 }
                 catch (Exception e)
                 {
                     Logging.LogUsefulException(e);
-                    this.Close();
+                    Close();
                 }
             }
 
@@ -217,7 +215,7 @@ namespace Shadowsocks.Controller
             {
                 if (_localShutdown && _remoteShutdown)
                 {
-                    this.Close();
+                    Close();
                 }
             }
 

shadowsocks-csharp/Controller/Service/UDPRelay.cs

@@ -53,7 +53,7 @@ namespace Shadowsocks.Controller
             private Socket _remote;
 
             private Server _server;
-            private byte[] _buffer = new byte[1500];
+            private byte[] _buffer = new byte[65536];
 
             private IPEndPoint _localEndPoint;
             private IPEndPoint _remoteEndPoint;
@@ -81,7 +81,7 @@ namespace Shadowsocks.Controller
                 IEncryptor encryptor = EncryptorFactory.GetEncryptor(_server.method, _server.password);
                 byte[] dataIn = new byte[length - 3];
                 Array.Copy(data, 3, dataIn, 0, length - 3);
-                byte[] dataOut = new byte[length - 3 + 16];
+                byte[] dataOut = new byte[65536];  // enough space for AEAD ciphers
                 int outlen;
                 encryptor.EncryptUDP(dataIn, length - 3, dataOut, out outlen);
                 Logging.Debug(_localEndPoint, _remoteEndPoint, outlen, "UDP Relay");

shadowsocks-csharp/Controller/Service/UpdateChecker.cs

@@ -24,7 +24,7 @@ namespace Shadowsocks.Controller
         public string LatestVersionLocalName;
         public event EventHandler CheckUpdateCompleted;
 
-        public const string Version = "4.0";
+        public const string Version = "4.0.1";
 
         private class CheckUpdateTimer : System.Timers.Timer
         {

shadowsocks-csharp/Controller/ShadowsocksController.cs

@@ -163,8 +163,13 @@ namespace Shadowsocks.Controller
         {
             try
             {
-                var server = new Server(ssURL);
-                _config.configs.Add(server);
+                if (ssURL.IsNullOrEmpty() || ssURL.IsWhiteSpace()) return false;
+                var servers = Server.GetServers(ssURL);
+                if (servers == null || servers.Count == 0) return false;
+                foreach (var server in servers)
+                {
+                    _config.configs.Add(server);
+                }
                 _config.index = _config.configs.Count - 1;
                 SaveConfig(_config);
                 return true;

shadowsocks-csharp/Encryption/AEAD/AEADEncryptor.cs

@@ -18,7 +18,7 @@ namespace Shadowsocks.Encryption.AEAD
         private static readonly byte[] InfoBytes = Encoding.ASCII.GetBytes(Info);
 
         // for UDP only
-        protected static byte[] _udpTmpBuf = new byte[MAX_INPUT_SIZE];
+        protected static byte[] _udpTmpBuf = new byte[65536];
 
         // every connection should create its own buffer
         private CircularBuffer<byte> _encCircularBuffer = new CircularBuffer<byte>(MAX_INPUT_SIZE * 2, false);

shadowsocks-csharp/Encryption/Stream/StreamEncryptor.cs

@@ -11,7 +11,7 @@ namespace Shadowsocks.Encryption.Stream
         : EncryptorBase
     {
         // for UDP only
-        protected static byte[] _udpTmpBuf = new byte[MAX_INPUT_SIZE];
+        protected static byte[] _udpTmpBuf = new byte[65536];
 
         // every connection should create its own buffer
         private CircularBuffer<byte> _encCircularBuffer = new CircularBuffer<byte>(TCPHandler.BufferSize * 2, false);

shadowsocks-csharp/Model/Server.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Web;
@@ -10,9 +11,8 @@ namespace Shadowsocks.Model
     public class Server
     {
         public static readonly Regex
-            UrlFinder = new Regex("^(?i)ss://([A-Za-z0-9+-/=_]+)(#(.+))?$", RegexOptions.IgnoreCase),
-            DetailsParser = new Regex("^((?<method>.+?):(?<password>.*)@(?<hostname>.+?)" +
-                                      ":(?<port>\\d+?))$", RegexOptions.IgnoreCase);
+            UrlFinder = new Regex(@"ss://(?<base64>[A-Za-z0-9+-/=_]+)(?:#(?<tag>\S+))?", RegexOptions.IgnoreCase),
+            DetailsParser = new Regex(@"^((?<method>.+?):(?<password>.*)@(?<hostname>.+?):(?<port>\d+?))$", RegexOptions.IgnoreCase);
 
         private const int DefaultServerTimeoutSec = 5;
         public const int MaxServerTimeoutSec = 20;
@@ -43,9 +43,10 @@ namespace Shadowsocks.Model
             }
             string serverStr;
             // CheckHostName() won't do a real DNS lookup
-            var hostType = Uri.CheckHostName( server );
+            var hostType = Uri.CheckHostName(server);
 
-            switch ( hostType ) {
+            switch (hostType)
+            {
                 case UriHostNameType.IPv6:
                     serverStr = $"[{server}]:{server_port}";
                     break;
@@ -69,20 +70,32 @@ namespace Shadowsocks.Model
             timeout = DefaultServerTimeoutSec;
         }
 
-        public Server(string ssURL) : this()
+        public static List<Server> GetServers(string ssURL)
         {
-            var match = UrlFinder.Match(ssURL);
-            if (!match.Success) throw new FormatException();
-            var base64 = match.Groups[1].Value;
-            var tag = match.Groups[3].Value;
-            if (!tag.IsNullOrEmpty())
-                remarks = HttpUtility.UrlDecode(tag, Encoding.UTF8);
-            match = DetailsParser.Match(Encoding.UTF8.GetString(Convert.FromBase64String(
-                base64.PadRight(base64.Length + (4 - base64.Length % 4) % 4, '='))));
-            method = match.Groups["method"].Value;
-            password = match.Groups["password"].Value;
-            server = match.Groups["hostname"].Value;
-            server_port = int.Parse(match.Groups["port"].Value);
+            var matches = UrlFinder.Matches(ssURL);
+            if (matches.Count <= 0) return null;
+            List<Server> servers = new List<Server>();
+            foreach (Match match in matches)
+            {
+                Server tmp = new Server();
+                var base64 = match.Groups["base64"].Value;
+                var tag = match.Groups["tag"].Value;
+                if (!tag.IsNullOrEmpty())
+                {
+                    tmp.remarks = HttpUtility.UrlDecode(tag, Encoding.UTF8);
+                }
+                Match details = DetailsParser.Match(Encoding.UTF8.GetString(Convert.FromBase64String(
+                    base64.PadRight(base64.Length + (4 - base64.Length % 4) % 4, '='))));
+                if (!details.Success)
+                    continue;
+                tmp.method = details.Groups["method"].Value;
+                tmp.password = details.Groups["password"].Value;
+                tmp.server = details.Groups["hostname"].Value;
+                tmp.server_port = int.Parse(details.Groups["port"].Value);
+
+                servers.Add(tmp);
+            }
+            return servers;
         }
 
         public string Identifier()