diff --git a/pom.xml b/pom.xml
index 3272f31..8205605 100644
--- a/pom.xml
+++ b/pom.xml
@@ -57,7 +57,7 @@
     <dependency>
       <groupId>com.github.nkzawa</groupId>
       <artifactId>engine.io-client</artifactId>
-      <version>0.1.3</version>
+      <version>0.2.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>com.google.code.gson</groupId>
diff --git a/src/main/java/com/github/nkzawa/socketio/client/IO.java b/src/main/java/com/github/nkzawa/socketio/client/IO.java
index 6357ef1..6502dd7 100644
--- a/src/main/java/com/github/nkzawa/socketio/client/IO.java
+++ b/src/main/java/com/github/nkzawa/socketio/client/IO.java
@@ -66,8 +66,7 @@ public class IO {
             io = managers.get(id);
         }
 
-        String path = uri.getPath();
-        return io.socket(path != null && !path.isEmpty() ? path : "/");
+        return io.socket(parsed.getPath());
     }
 
 
diff --git a/src/main/java/com/github/nkzawa/socketio/client/Manager.java b/src/main/java/com/github/nkzawa/socketio/client/Manager.java
index ff32f9e..7922e75 100644
--- a/src/main/java/com/github/nkzawa/socketio/client/Manager.java
+++ b/src/main/java/com/github/nkzawa/socketio/client/Manager.java
@@ -1,12 +1,14 @@
 package com.github.nkzawa.socketio.client;
 
 import com.github.nkzawa.emitter.Emitter;
-import com.github.nkzawa.engineio.client.EventThread;
 import com.github.nkzawa.socketio.parser.Packet;
 import com.github.nkzawa.socketio.parser.Parser;
+import com.github.nkzawa.thread.EventThread;
 
 import java.net.URI;
+import java.util.ArrayList;
 import java.util.LinkedList;
+import java.util.List;
 import java.util.Queue;
 import java.util.concurrent.*;
 import java.util.logging.Logger;
@@ -58,52 +60,65 @@ public class Manager extends Emitter {
 
     public static final String EVENT_RECONNECT_FAILED = "reconnect_failed";
 
-    /*package*/ ReadyState readyState = ReadyState.CLOSED;
+    public static final String EVENT_RECONNECT_ATTEMPT = "reconnect_attempt";
+
+    /*package*/ ReadyState readyState = null;
 
     private boolean _reconnection;
     private boolean skipReconnect;
     private boolean reconnecting;
+    private boolean encoding;
+    private boolean openReconnect;
     private int _reconnectionAttempts;
     private long _reconnectionDelay;
     private long _reconnectionDelayMax;
     private long _timeout;
     private int connected;
     private int attempts;
-    private Queue<On.Handle> subs = new LinkedList<On.Handle>();
+    private URI uri;
+    private List<Packet> packetBuffer;
+    private Queue<On.Handle> subs;
+    private IO.Options opts;
     private com.github.nkzawa.engineio.client.Socket engine;
+    private Parser.Encoder encoder;
+    private Parser.Decoder decoder;
 
     /**
      * This HashMap can be accessed from outside of EventThread.
      */
-    private ConcurrentHashMap<String, Socket> nsps = new ConcurrentHashMap<String, Socket>();
+    private ConcurrentHashMap<String, Socket> nsps;
 
     private ScheduledExecutorService timeoutScheduler = Executors.newSingleThreadScheduledExecutor();
     private ScheduledExecutorService reconnectScheduler = Executors.newSingleThreadScheduledExecutor();
 
 
+    public Manager(IO.Options opts) {
+        this(null, opts);
+    }
+
     public Manager(URI uri, IO.Options opts) {
-        opts = initOptions(opts);
-        this.engine = new Engine(uri, opts);
-    }
-
-    public Manager(com.github.nkzawa.engineio.client.Socket socket, IO.Options opts) {
-        opts = initOptions(opts);
-        this.engine = socket;
-    }
-
-    private IO.Options initOptions(IO.Options opts) {
         if (opts == null) {
             opts = new IO.Options();
         }
         if (opts.path == null) {
             opts.path = "/socket.io";
         }
+        this.opts = opts;
+        this.nsps = new ConcurrentHashMap<String, Socket>();
+        this.subs = new LinkedList<On.Handle>();
         this.reconnection(opts.reconnection);
         this.reconnectionAttempts(opts.reconnectionAttempts != 0 ? opts.reconnectionAttempts : Integer.MAX_VALUE);
         this.reconnectionDelay(opts.reconnectionDelay != 0 ? opts.reconnectionDelay : 1000);
         this.reconnectionDelayMax(opts.reconnectionDelayMax != 0 ? opts.reconnectionDelayMax : 5000);
-        this.timeout(opts.timeout < 0 ? 10000 : opts.timeout);
-        return opts;
+        this.timeout(opts.timeout < 0 ? 20000 : opts.timeout);
+        this.readyState = ReadyState.CLOSED;
+        this.uri = uri;
+        this.connected = 0;
+        this.attempts = 0;
+        this.encoding = false;
+        this.packetBuffer = new ArrayList<Packet>();
+        this.encoder = new Parser.Encoder();
+        this.decoder = new Parser.Decoder();
     }
 
     public boolean reconnection() {
@@ -151,6 +166,13 @@ public class Manager extends Emitter {
         return this;
     }
 
+    private void maybeReconnectOnOpen() {
+        if (!this.openReconnect && !this.reconnecting && this._reconnection) {
+            this.openReconnect = true;
+            this.reconnect();
+        }
+    }
+
     public Manager open(){
         return open(null);
     }
@@ -165,8 +187,11 @@ public class Manager extends Emitter {
         EventThread.exec(new Runnable() {
             @Override
             public void run() {
+                logger.fine(String.format("readyState %s", Manager.this.readyState));
                 if (Manager.this.readyState == ReadyState.OPEN) return;
 
+                logger.fine(String.format("opening %s", Manager.this.uri));
+                Manager.this.engine = new Engine(Manager.this.uri, Manager.this.opts);
                 final com.github.nkzawa.engineio.client.Socket socket = Manager.this.engine;
                 final Manager self = Manager.this;
 
@@ -184,13 +209,17 @@ public class Manager extends Emitter {
                     @Override
                     public void call(Object... objects) {
                         Object data = objects.length > 0 ? objects[0] : null;
+                        logger.fine("connect_error");
                         self.cleanup();
+                        self.readyState = ReadyState.CLOSED;
                         self.emit(EVENT_CONNECT_ERROR, data);
                         if (fn != null) {
                             Exception err = new SocketIOException("Connection error",
-                                    data instanceof Exception ? (Exception)data : null);
+                                    data instanceof Exception ? (Exception) data : null);
                             fn.call(err);
                         }
+
+                        self.maybeReconnectOnOpen();
                     }
                 });
 
@@ -214,14 +243,12 @@ public class Manager extends Emitter {
                         }
                     }, timeout, TimeUnit.MILLISECONDS);
 
-                    On.Handle timeSub = new On.Handle() {
+                    Manager.this.subs.add(new On.Handle() {
                         @Override
                         public void destroy() {
                             timer.cancel(false);
                         }
-                    };
-
-                    Manager.this.subs.add(timeSub);
+                    });
                 }
 
                 Manager.this.subs.add(openSub);
@@ -234,6 +261,8 @@ public class Manager extends Emitter {
     }
 
     private void onopen() {
+        logger.fine("open");
+
         this.cleanup();
 
         this.readyState = ReadyState.OPEN;
@@ -246,6 +275,12 @@ public class Manager extends Emitter {
                 Manager.this.ondata((String)objects[0]);
             }
         }));
+        this.subs.add(On.on(this.decoder, Parser.Decoder.EVENT_DECODED, new Listener() {
+            @Override
+            public void call(Object... objects) {
+                Manager.this.ondecoded((Packet) objects[0]);
+            }
+        }));
         this.subs.add(On.on(socket, Engine.EVENT_ERROR, new Listener() {
             @Override
             public void call(Object... objects) {
@@ -255,13 +290,17 @@ public class Manager extends Emitter {
         this.subs.add(On.on(socket, Engine.EVENT_CLOSE, new Listener() {
             @Override
             public void call(Object... objects) {
-                Manager.this.onclose();
+                Manager.this.onclose((String)objects[0]);
             }
         }));
     }
 
     private void ondata(String data) {
-        this.emit(EVENT_PACKET, Parser.decode(data));
+        this.decoder.add(data);
+    }
+
+    private void ondecoded(Packet packet) {
+        this.emit(EVENT_PACKET, packet);
     }
 
     private void onerror(Exception err) {
@@ -295,15 +334,38 @@ public class Manager extends Emitter {
     }
 
     /*package*/ void destroy(Socket socket) {
-        this.connected--;
-        if (connected == 0) {
+        --this.connected;
+        if (this.connected == 0) {
             this.close();
         }
     }
 
     /*package*/ void packet(Packet packet) {
         logger.fine(String.format("writing packet %s", packet));
-        this.engine.write(Parser.encode(packet));
+        final Manager self = this;
+
+        if (!self.encoding) {
+            self.encoding = true;
+            this.encoder.encode(packet, new Parser.Encoder.Callback() {
+                @Override
+                public void call(String[] encodedPackets) {
+                    for (int i = 0; i < encodedPackets.length; i++) {
+                        self.engine.write(encodedPackets[i]);
+                    }
+                    self.encoding = false;
+                    self.processPacketQueue();
+                }
+            });
+        } else {
+            self.packetBuffer.add(packet);
+        }
+    }
+
+    private void processPacketQueue() {
+        if (this.packetBuffer.size() > 0 && !this.encoding) {
+            Packet pack = this.packetBuffer.remove(0);
+            this.packet(pack);
+        }
     }
 
     private void cleanup() {
@@ -313,24 +375,27 @@ public class Manager extends Emitter {
 
     private void close() {
         this.skipReconnect = true;
-        this.cleanup();
-        this.readyState = ReadyState.CLOSED;
         this.engine.close();
     }
 
-    private void onclose() {
+    private void onclose(String reason) {
+        logger.fine("close");
         this.cleanup();
         this.readyState = ReadyState.CLOSED;
+        this.emit(EVENT_CLOSE, reason);
         if (this._reconnection && !this.skipReconnect) {
             this.reconnect();
         }
     }
 
     private void reconnect() {
+        if (this.reconnecting) return;
+
         final Manager self = this;
         this.attempts++;
 
         if (attempts > this._reconnectionAttempts) {
+            logger.fine("reconnect failed");
             this.emit(EVENT_RECONNECT_FAILED);
             this.reconnecting = false;
         } else {
@@ -346,11 +411,13 @@ public class Manager extends Emitter {
                         @Override
                         public void run() {
                             logger.fine("attempting reconnect");
+                            self.emit(EVENT_RECONNECT_ATTEMPT);
                             self.open(new OpenCallback() {
                                 @Override
                                 public void call(Exception err) {
                                     if (err != null) {
                                         logger.fine("reconnect attempt error");
+                                        self.reconnecting = false;
                                         self.reconnect();
                                         self.emit(EVENT_RECONNECT_ERROR, err);
                                     } else {
diff --git a/src/main/java/com/github/nkzawa/socketio/client/Socket.java b/src/main/java/com/github/nkzawa/socketio/client/Socket.java
index 6b404d3..6d15a48 100644
--- a/src/main/java/com/github/nkzawa/socketio/client/Socket.java
+++ b/src/main/java/com/github/nkzawa/socketio/client/Socket.java
@@ -1,9 +1,9 @@
 package com.github.nkzawa.socketio.client;
 
 import com.github.nkzawa.emitter.Emitter;
-import com.github.nkzawa.engineio.client.EventThread;
 import com.github.nkzawa.socketio.parser.Packet;
 import com.github.nkzawa.socketio.parser.Parser;
+import com.github.nkzawa.thread.EventThread;
 import com.google.gson.Gson;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
@@ -42,10 +42,10 @@ public class Socket extends Emitter {
 
     public static final String EVENT_MESSAGE = "message";
 
-    private static List<String> events = new ArrayList<String>() {{
-        add(EVENT_CONNECT);
-        add(EVENT_DISCONNECT);
-        add(EVENT_ERROR);
+    private static Map<String, Integer> events = new HashMap<String, Integer>() {{
+        put(EVENT_CONNECT, 1);
+        put(EVENT_DISCONNECT, 1);
+        put(EVENT_ERROR, 1);
     }};
 
     private boolean connected;
@@ -66,36 +66,50 @@ public class Socket extends Emitter {
     /**
      * Connects the socket.
      */
-    public void open() {
+    public Socket open() {
         EventThread.exec(new Runnable() {
             @Override
             public void run() {
+                if (Socket.this.connected) return;
                 final Manager io = Socket.this.io;
+                io.open();
                 Socket.this.subs = new LinkedList<On.Handle>() {{
                     add(On.on(io, Manager.EVENT_OPEN, new Listener() {
                         @Override
-                        public void call(Object... objects) {
+                        public void call(Object... args) {
                             Socket.this.onopen();
                         }
                     }));
                     add(On.on(io, Manager.EVENT_ERROR, new Listener() {
                         @Override
-                        public void call(Object... objects) {
-                            Socket.this.onerror(objects.length > 0 ? (Exception) objects[0] : null);
+                        public void call(Object... args) {
+                            Socket.this.onerror(args.length > 0 ? (Exception) args[0] : null);
+                        }
+                    }));
+                    add(On.on(io, Manager.EVENT_PACKET, new Listener() {
+                        @Override
+                        public void call(Object... args) {
+                            Socket.this.onpacket((Packet) args[0]);
+                        }
+                    }));
+                    add(On.on(io, Manager.EVENT_CLOSE, new Listener() {
+                        @Override
+                        public void call(Object... args) {
+                            Socket.this.onclose(args.length > 0 ? (String) args[0] : null);
                         }
                     }));
                 }};
-                if (Socket.this.io.readyState == Manager.ReadyState.OPEN) Socket.this.onopen();
-                io.open();
+                if (Manager.ReadyState.OPEN == Socket.this.io.readyState) Socket.this.onopen();
             }
         });
+        return this;
     }
 
     /**
      * Connects the socket.
      */
-    public void connect() {
-        this.open();
+    public Socket connect() {
+        return this.open();
     }
 
     /**
@@ -126,20 +140,25 @@ public class Socket extends Emitter {
         EventThread.exec(new Runnable() {
             @Override
             public void run() {
-                if (events.contains(event)) {
+                if (events.containsKey(event)) {
                     Socket.super.emit(event, args);
-                } else {
-                    LinkedList<Object> _args = new LinkedList<Object>(Arrays.asList(args));
-                    if (_args.peekLast() instanceof Ack) {
-                        Ack ack = (Ack)_args.pollLast();
-                        Socket.this.emit(event, _args.toArray(), ack);
-                        return;
-                    }
-
-                    _args.offerFirst(event);
-                    Packet packet = new Packet(Parser.EVENT, toJsonArray(_args));
-                    Socket.this.packet(packet);
+                    return;
                 }
+
+                List<Object> _args = new ArrayList<Object>(args.length + 1);
+                _args.add(event);
+                _args.addAll(Arrays.asList(args));
+                int parserType = Parser.EVENT;
+                // TODO: hasBin(_args)
+                Packet packet = new Packet(parserType, toJsonArray(_args));
+
+                if (_args.get(_args.size() - 1) instanceof Ack) {
+                    logger.fine(String.format("emitting packet with ack id %d", Socket.this.ids));
+                    Socket.this.acks.put(Socket.this.ids, (Ack)_args.remove(_args.size() - 1));
+                    packet.id = Socket.this.ids++;
+                }
+
+                Socket.this.packet(packet);
             }
         });
         return this;
@@ -190,21 +209,6 @@ public class Socket extends Emitter {
         if (!"/".equals(this.nsp)) {
             this.packet(new Packet(Parser.CONNECT));
         }
-
-        Manager io = this.io;
-        this.subs.add(On.on(io, Manager.EVENT_PACKET, new Listener() {
-            @Override
-            public void call(Object... objects) {
-                Socket.this.onpacket((Packet)objects[0]);
-            }
-        }));
-        this.subs.add(On.on(io, Manager.EVENT_CLOSE, new Listener() {
-            @Override
-            public void call(Object... objects) {
-                String reason = objects.length > 0 ? (String) objects[0] : null;
-                Socket.this.onclose(reason);
-            }
-        }));
     }
 
     private void onclose(String reason) {
@@ -226,6 +230,10 @@ public class Socket extends Emitter {
                 this.onevent(packet);
                 break;
 
+            case Parser.BINARY_EVENT:
+                this.onevent(packet);
+                break;
+
             case Parser.ACK:
                 this.onack(packet);
                 break;
@@ -303,8 +311,6 @@ public class Socket extends Emitter {
     }
 
     private void destroy() {
-        logger.fine(String.format("destroying socket (%s)", this.nsp));
-
         for (On.Handle sub : this.subs) {
             sub.destroy();
         }
diff --git a/src/main/java/com/github/nkzawa/socketio/client/Url.java b/src/main/java/com/github/nkzawa/socketio/client/Url.java
index 8d5e83f..292b337 100644
--- a/src/main/java/com/github/nkzawa/socketio/client/Url.java
+++ b/src/main/java/com/github/nkzawa/socketio/client/Url.java
@@ -6,18 +6,25 @@ import java.net.URL;
 
 public class Url {
 
-    private Url() {
-    }
+    private Url() {}
 
     public static URL parse(URI uri) throws MalformedURLException {
         String protocol = uri.getScheme();
         if (protocol == null || !protocol.matches("^https?|wss?$")) {
             uri = uri.resolve("https://" + uri.getAuthority());
         }
+
+        int port = uri.getPort();
+        if (protocol != null && ((protocol.matches("^http|ws$") && port == 80) ||
+                (protocol.matches("^(http|ws)s$") && port == 443))) {
+            uri = uri.resolve("//" + uri.getHost());
+        }
+
         String path = uri.getPath();
         if (path == null || path.isEmpty()) {
             uri = uri.resolve("/");
         }
+
         return uri.toURL();
     }
 
diff --git a/src/main/java/com/github/nkzawa/socketio/parser/Packet.java b/src/main/java/com/github/nkzawa/socketio/parser/Packet.java
index 6b9669f..9adffb4 100644
--- a/src/main/java/com/github/nkzawa/socketio/parser/Packet.java
+++ b/src/main/java/com/github/nkzawa/socketio/parser/Packet.java
@@ -8,6 +8,7 @@ public class Packet {
     public int id = -1;
     public String nsp;
     public JsonElement data;
+    public int attachments;
 
     public Packet() {}
 
diff --git a/src/main/java/com/github/nkzawa/socketio/parser/Parser.java b/src/main/java/com/github/nkzawa/socketio/parser/Parser.java
index a19714c..cfb33f7 100644
--- a/src/main/java/com/github/nkzawa/socketio/parser/Parser.java
+++ b/src/main/java/com/github/nkzawa/socketio/parser/Parser.java
@@ -1,9 +1,7 @@
 package com.github.nkzawa.socketio.parser;
 
-import com.google.gson.Gson;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonParser;
-import com.google.gson.JsonPrimitive;
+import com.github.nkzawa.emitter.Emitter;
+import com.google.gson.*;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -14,7 +12,7 @@ public class Parser {
     private static final Logger logger = Logger.getLogger(Parser.class.getName());
 
     private static final Gson gson = new Gson();
-    private static final JsonParser parser = new JsonParser();
+    private static final JsonParser json = new JsonParser();
 
     /**
      * Packet type `connect`.
@@ -41,114 +39,221 @@ public class Parser {
      */
     public static final int ERROR = 4;
 
-    public static int protocol = 1;
+    /**
+     * Packet type `binary event`.
+     */
+    public static final int BINARY_EVENT = 5;
+
+    public static int protocol = 3;
 
     /**
      * Packet types.
      */
-    public static List<String > types = new ArrayList<String>() {{
-        add("CONNECT");
-        add("DISCONNECT");
-        add("EVENT");
-        add("ACK");
-        add("ERROR");
-    }};
+    public static String[] types = new String[] {
+        "CONNECT",
+        "DISCONNECT",
+        "EVENT",
+        "BINARY_EVENT",
+        "ACK",
+        "ERROR",
+    };
+
 
     private Parser() {}
 
-    public static String encode(Packet obj) {
-        StringBuilder str = new StringBuilder();
-        boolean nsp = false;
-        str.append(obj.type);
-
-        if (obj.nsp != null && !obj.nsp.isEmpty() && !"/".equals(obj.nsp)) {
-            nsp = true;
-            str.append(obj.nsp);
-        }
-
-        if (obj.id >= 0) {
-            if (nsp) {
-                str.append(",");
-                nsp = false;
-            }
-            str.append(obj.id);
-        }
-
-        if (obj.data != null) {
-            if (nsp) str.append(",");
-            str.append(gson.toJson(obj.data));
-        }
-
-        logger.fine(String.format("encoded %s as %s", obj, str));
-        return str.toString();
-    }
-
-    public static Packet decode(String str) {
-        Packet p = new Packet();
-        int i = 0;
-
-        try {
-            p.type = Character.getNumericValue(str.charAt(0));
-            types.get(p.type);
-        } catch (IndexOutOfBoundsException e) {
-            return error();
-        }
-
-        char next = Character.UNASSIGNED;
-        try {
-            next = str.charAt(i + 1);
-        } catch (IndexOutOfBoundsException e) {
-            // do nothing
-        }
-        if (next == '/') {
-            StringBuilder nsp = new StringBuilder();
-            while (true) {
-                ++i;
-                char c = str.charAt(i);
-                if (c == ',') break;
-                nsp.append(c);
-                if (i + 1 == str.length()) break;
-            }
-            p.nsp = nsp.toString();
-        } else {
-            p.nsp = "/";
-        }
-
-        next = Character.UNASSIGNED;
-        try {
-            next = str.charAt(i + 1);
-        } catch (IndexOutOfBoundsException e) {
-            // do nothing
-        }
-        if (Character.getNumericValue(next) != -1) {
-            StringBuilder id = new StringBuilder();
-            while (true) {
-                ++i;
-                Character c = str.charAt(i);
-                if (c == null || Character.getNumericValue(c) == -1) {
-                    --i;
-                    break;
-                }
-                id.append(c);
-                if (i + 1 == str.length()) break;
-            }
-            p.id = Integer.parseInt(id.toString());
-        }
-
-        try {
-            str.charAt(++i);
-            p.data = parser.parse(str.substring(i));
-        } catch (IndexOutOfBoundsException e) {
-            // do nothing
-        } catch (JsonParseException e) {
-            return error();
-        }
-
-        logger.fine(String.format("decoded %s as %s", str, p));
-        return p;
-    }
-
     private static Packet error() {
         return new Packet(ERROR, new JsonPrimitive("parser error"));
     }
+
+
+    public static class Encoder {
+
+        public Encoder() {}
+
+        public void encode(Packet obj, Callback callback) {
+            logger.fine(String.format("encoding packet %s", obj));
+
+            if (BINARY_EVENT == obj.type || ACK == obj.type) {
+                encodeAsBinary(obj, callback);
+            } else {
+                String encoding = encodeAsString(obj);
+                callback.call(new String[] {encoding});
+            }
+        }
+
+        private String encodeAsString(Packet obj) {
+            StringBuilder str = new StringBuilder();
+            boolean nsp = false;
+
+            str.append(obj.type);
+
+            if (BINARY_EVENT == obj.type || ACK == obj.type) {
+                str.append(obj.attachments);
+                str.append("-");
+            }
+
+            if (obj.nsp != null && !obj.nsp.isEmpty() && !"/".equals(obj.nsp)) {
+                nsp = true;
+                str.append(obj.nsp);
+            }
+
+            if (obj.id >= 0) {
+                if (nsp) {
+                    str.append(",");
+                    nsp = false;
+                }
+                str.append(obj.id);
+            }
+
+            if (obj.data != null) {
+                if (nsp) str.append(",");
+                str.append(gson.toJson(obj.data));
+            }
+
+            logger.fine(String.format("encoded %s as %s", obj, str));
+            return str.toString();
+        }
+
+        private void encodeAsBinary(Packet obj, Callback callback) {
+            // TODO
+        }
+
+        public interface Callback {
+
+            public void call(String[] data);
+        }
+    }
+
+    public static class Decoder extends Emitter {
+
+        public static String EVENT_DECODED = "decoded";
+
+        private BinaryReconstructor reconstructor;
+
+        public Decoder() {
+            this.reconstructor = null;
+        }
+
+        public void add(String obj) {
+            Packet packet = decodeString(obj);
+            if (BINARY_EVENT == packet.type || ACK == packet.type) {
+                this.reconstructor = new BinaryReconstructor(packet);
+
+                if (this.reconstructor.reconPack.attachments == 0) {
+                    this.emit(EVENT_DECODED, packet);
+                }
+            } else {
+                this.emit(EVENT_DECODED, packet);
+            }
+        }
+
+        public void add(byte[] obj) {
+            if (this.reconstructor == null) {
+                throw new RuntimeException("got binary data when not reconstructing a packet");
+            } else {
+                Packet packet = this.reconstructor.takeBinaryData(obj);
+                if (packet != null) {
+                    this.reconstructor = null;
+                    this.emit(EVENT_DECODED, packet);
+                }
+            }
+        }
+
+        public static Packet decodeString(String str) {
+            Packet p = new Packet();
+            int i = 0;
+
+            p.type = Character.getNumericValue(str.charAt(0));
+            if (p.type < 0 || p.type > types.length - 1) return error();
+
+            if (BINARY_EVENT == p.type || ACK == p.type) {
+                StringBuilder attachments = new StringBuilder();
+                while (str.charAt(++i) != '-') {
+                    attachments.append(str.charAt(i));
+                }
+                p.attachments = Integer.parseInt(attachments.toString());
+            }
+
+            if (str.length() > i + 1 && '/' == str.charAt(i + 1)) {
+                StringBuilder nsp = new StringBuilder();
+                while (true) {
+                    ++i;
+                    char c = str.charAt(i);
+                    if (',' == c) break;
+                    nsp.append(c);
+                    if (i + 1 == str.length()) break;
+                }
+                p.nsp = nsp.toString();
+            } else {
+                p.nsp = "/";
+            }
+
+            Character next;
+            try {
+                next = str.charAt(i + 1);
+            } catch (IndexOutOfBoundsException e) {
+                next = Character.UNASSIGNED;
+            }
+            if (Character.UNASSIGNED != next && Character.getNumericValue(next) > -1) {
+                StringBuilder id = new StringBuilder();
+                while (true) {
+                    ++i;
+                    char c = str.charAt(i);
+                    if (Character.getNumericValue(c) < 0) {
+                        --i;
+                        break;
+                    }
+                    id.append(c);
+                    if (i + 1 == str.length()) break;
+                }
+                p.id = Integer.parseInt(id.toString());
+            }
+
+            try {
+                str.charAt(++i);
+                p.data = json.parse(str.substring(i));
+            } catch (IndexOutOfBoundsException e) {
+                // do nothing
+            } catch (JsonParseException e) {
+                return error();
+            }
+
+            logger.fine(String.format("decoded %s as %s", str, p));
+            return p;
+        }
+
+        public void destroy() {
+            if (this.reconstructor != null) {
+                this.reconstructor.finishReconstruction();
+            }
+        }
+    }
+
+
+    private static class BinaryReconstructor {
+
+        public Packet reconPack;
+
+        private List<byte[]> buffers;
+
+        BinaryReconstructor(Packet packet) {
+            this.reconPack = packet;
+            this.buffers = new ArrayList<byte[]>();
+        }
+
+        public Packet takeBinaryData(byte[] binData) {
+            this.buffers.add(binData);
+            if (this.buffers.size() == this.reconPack.attachments) {
+                // TODO:
+            }
+            return null;
+        }
+
+        public void finishReconstruction () {
+            this.reconPack = null;
+            this.buffers = new ArrayList<byte[]>();
+        }
+    }
 }
+
+
diff --git a/src/test/java/com/github/nkzawa/socketio/client/UrlTest.java b/src/test/java/com/github/nkzawa/socketio/client/UrlTest.java
index f2501c2..32465bd 100644
--- a/src/test/java/com/github/nkzawa/socketio/client/UrlTest.java
+++ b/src/test/java/com/github/nkzawa/socketio/client/UrlTest.java
@@ -18,28 +18,33 @@ public class UrlTest {
 
     @Test
     public void parse() throws MalformedURLException, URISyntaxException {
-        URL url = Url.parse(new URI("http://woot.com/test"));
-        assertThat(url.getProtocol(), is("http"));
+        URL url = Url.parse(new URI("https://woot.com/test"));
+        assertThat(url.getProtocol(), is("https"));
         assertThat(url.getHost(), is("woot.com"));
         assertThat(url.getPath(), is("/test"));
     }
 
     @Test
-    public void parse_NoProtocol() throws MalformedURLException, URISyntaxException {
+    public void parseNoProtocol() throws MalformedURLException, URISyntaxException {
         URL url = Url.parse(new URI("//localhost:3000"));
         assertThat(url.getProtocol(), is("https"));
         assertThat(url.getHost(), is("localhost"));
-        assertThat(url.getAuthority(), is("localhost:3000"));
         assertThat(url.getPort(), is(3000));
     }
 
     @Test
-    public void parse_Namaspace() throws MalformedURLException, URISyntaxException {
+    public void parseNamespace() throws MalformedURLException, URISyntaxException {
         assertThat(Url.parse(new URI("http://woot.com/woot")).getPath(), is("/woot"));
         assertThat(Url.parse(new URI("http://google.com")).getPath(), is("/"));
         assertThat(Url.parse(new URI("http://google.com/")).getPath(), is("/"));
     }
 
+    @Test
+    public void parseDefaultPort() throws MalformedURLException, URISyntaxException {
+        assertThat(Url.parse(new URI("http://google.com:80/")).toString(), is("http://google.com/"));
+        assertThat(Url.parse(new URI("https://google.com:443/")).toString(), is("https://google.com/"));
+    }
+
     @Test
     public void extractId() throws MalformedURLException, URISyntaxException {
         String id1 = Url.extractId(new URL("http://google.com:80/"));
diff --git a/src/test/java/com/github/nkzawa/socketio/parser/ParserTest.java b/src/test/java/com/github/nkzawa/socketio/parser/ParserTest.java
index 94b13a9..2cb0288 100644
--- a/src/test/java/com/github/nkzawa/socketio/parser/ParserTest.java
+++ b/src/test/java/com/github/nkzawa/socketio/parser/ParserTest.java
@@ -1,18 +1,20 @@
 package com.github.nkzawa.socketio.parser;
 
+import com.github.nkzawa.emitter.Emitter;
 import com.google.gson.JsonParser;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
-import static com.github.nkzawa.socketio.parser.Parser.decode;
-import static com.github.nkzawa.socketio.parser.Parser.encode;
 import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertThat;
 
 @RunWith(JUnit4.class)
 public class ParserTest {
 
+    private static Parser.Encoder encoder = new Parser.Encoder();
+
+
     @Test
     public void connect() {
         Packet packet = new Packet(Parser.CONNECT);
@@ -49,10 +51,24 @@ public class ParserTest {
         test(packet);
     }
 
-    private void test(Packet packet) {
-        Packet _packet = decode(encode(packet));
-        assertThat(_packet.type, is(packet.type));
-        assertThat(_packet.data, is(packet.data));
-        assertThat(_packet.nsp, is(packet.nsp));
+    private void test(final Packet obj) {
+        encoder.encode(obj, new Parser.Encoder.Callback() {
+            @Override
+            public void call(String[] encodedPackets) {
+                Parser.Decoder decoder = new Parser.Decoder();
+                decoder.on(Parser.Decoder.EVENT_DECODED, new Emitter.Listener() {
+                    @Override
+                    public void call(Object... args) {
+                        Packet packet = (Packet)args[0];
+                        assertThat(packet.type, is(obj.type));
+                        assertThat(packet.id, is(obj.id));
+                        assertThat(packet.data, is(obj.data));
+                        assertThat(packet.nsp, is(obj.nsp));
+                        assertThat(packet.attachments, is(obj.attachments));
+                    }
+                });
+                decoder.add(encodedPackets[0]);
+            }
+        });
     }
 }
diff --git a/src/test/resources/package.json b/src/test/resources/package.json
index c1626ff..9c02960 100644
--- a/src/test/resources/package.json
+++ b/src/test/resources/package.json
@@ -3,6 +3,6 @@
   "version": "0.0.0",
   "private": true,
   "dependencies": {
-    "socket.io": "nkzawa/socket.io"
+    "socket.io": "LearnBoost/socket.io"
   }
 }