diff --git a/src/common/haxe/ru/m/connect/PacketUtil.hx b/src/common/haxe/ru/m/connect/PacketUtil.hx
new file mode 100644
index 0000000..be47c1c
--- /dev/null
+++ b/src/common/haxe/ru/m/connect/PacketUtil.hx
@@ -0,0 +1,20 @@
+package ru.m.connect;
+
+import haxe.io.Bytes;
+import haxe.io.BytesOutput;
+import protohx.Message;
+
+class PacketUtil {
+
+    public static function fromBytes<P:Message>(bytes:Bytes, factory:Class<P>):P {
+        var packet:P = Type.createInstance(factory, []);
+        packet.mergeFrom(bytes);
+        return packet;
+    }
+
+    public static function toBytes<P:Message>(packet:P):Bytes {
+        var out = new BytesOutput();
+        packet.writeTo(out);
+        return out.getBytes();
+    }
+}
diff --git a/src/common/haxe/ru/m/connect/desktop/DesktopConnection.hx b/src/common/haxe/ru/m/connect/desktop/DesktopConnection.hx
index 08862bd..2048080 100644
--- a/src/common/haxe/ru/m/connect/desktop/DesktopConnection.hx
+++ b/src/common/haxe/ru/m/connect/desktop/DesktopConnection.hx
@@ -1,7 +1,6 @@
 package ru.m.connect.desktop;
 
 import cpp.vm.Thread;
-import haxe.io.BytesOutput;
 import haxe.Timer;
 import promhx.Deferred;
 import promhx.Promise;
@@ -58,8 +57,7 @@ class DesktopConnection<O:Message, I:Message> extends BaseConnection<O, I> {
                 socket.waitForRead();
                 var size = socket.input.readUInt16();
                 var data = socket.input.read(size);
-                var packet:I = Type.createInstance(queue.packetClass, []);
-                packet.mergeFrom(data);
+                var packet:I = PacketUtil.fromBytes(data, queue.packetClass);
                 receiveHandler.emit(packet);
             }
         } catch (error:Dynamic) {
@@ -68,9 +66,7 @@ class DesktopConnection<O:Message, I:Message> extends BaseConnection<O, I> {
     }
 
     private function _send(packet:O):Void {
-        var out = new BytesOutput();
-        packet.writeTo(out);
-        var bytes = out.getBytes();
+        var bytes = PacketUtil.toBytes(packet);
         socket.output.writeUInt16(bytes.length);
         socket.output.write(bytes);
         socket.output.flush();
diff --git a/src/common/haxe/ru/m/connect/fake/FakeConnection.hx b/src/common/haxe/ru/m/connect/fake/FakeConnection.hx
index 9d6b657..bd44fd4 100644
--- a/src/common/haxe/ru/m/connect/fake/FakeConnection.hx
+++ b/src/common/haxe/ru/m/connect/fake/FakeConnection.hx
@@ -4,7 +4,6 @@ import ru.m.connect.IConnection.ConnectionEvent;
 import promhx.Promise;
 import protohx.Message;
 
-
 class FakeConnection<O:Message, I:Message> extends BaseConnection<O, I> {
 
     override public function connect():Promise<IConnection<O, I>> {
diff --git a/src/common/haxe/ru/m/connect/flash/FlashConnection.hx b/src/common/haxe/ru/m/connect/flash/FlashConnection.hx
index 0269d90..7d33d33 100755
--- a/src/common/haxe/ru/m/connect/flash/FlashConnection.hx
+++ b/src/common/haxe/ru/m/connect/flash/FlashConnection.hx
@@ -8,7 +8,6 @@ import flash.events.SecurityErrorEvent;
 import flash.net.Socket;
 import flash.utils.Endian;
 import haxe.io.Bytes;
-import haxe.io.BytesOutput;
 import promhx.Deferred;
 import promhx.Promise;
 import protohx.Message;
@@ -76,21 +75,19 @@ class FlashConnection<O:Message, I:Message> extends BaseConnection<O, I> {
 
     private function onSocketData(_):Void {
         try {
-            var b = new flash.utils.ByteArray();
-            socket.readBytes(b);
-            var bs = Bytes.ofData(cast b);
-            pushData(bs);
+            var data = new flash.utils.ByteArray();
+            socket.readBytes(data);
+            var bytes = Bytes.ofData(data);
+            pushData(bytes);
         } catch (error:Dynamic) {
             handler.emit(ConnectionEvent.ERROR(error));
         }
     }
 
     private function _send(packet:O):Void {
-        var out = new BytesOutput();
-        packet.writeTo(out);
-        var bytes = out.getBytes();
+        var bytes = PacketUtil.toBytes(packet);
         socket.writeShort(bytes.length);
-        socket.writeBytes(cast bytes.getData());
+        socket.writeBytes(bytes.getData());
         socket.flush();
     }
 }
diff --git a/src/common/haxe/ru/m/connect/js/JsConnection.hx b/src/common/haxe/ru/m/connect/js/JsConnection.hx
index 9d5b763..3c4da44 100644
--- a/src/common/haxe/ru/m/connect/js/JsConnection.hx
+++ b/src/common/haxe/ru/m/connect/js/JsConnection.hx
@@ -1,11 +1,12 @@
 package ru.m.connect.js;
 
+import haxe.io.Bytes;
 import js.Browser;
+import js.html.BinaryType;
 import js.html.WebSocket;
 import promhx.Deferred;
 import promhx.Promise;
 import protohx.Message;
-import ru.m.Base64;
 import ru.m.connect.IConnection;
 
 class JsConnection<O:Message, I:Message> extends BaseConnection<O, I> {
@@ -32,8 +33,8 @@ class JsConnection<O:Message, I:Message> extends BaseConnection<O, I> {
 
     override public function connect():Promise<IConnection<O, I>>  {
         var self = this;
-        var decodeBytes = Base64.decodeBase64;
         socket = buildSocket(host, port);
+        socket.binaryType = BinaryType.ARRAYBUFFER;
         socket.onopen = this.onConnect;
         socket.onclose = this.onClose;
         socket.onerror = this.onError;
@@ -67,8 +68,8 @@ class JsConnection<O:Message, I:Message> extends BaseConnection<O, I> {
 
     private function onSocketData(event:Dynamic):Void {
         try {
-            var data:String = event.data;
-            var packet:I = WebSocketTools.string2packet(data, queue.packetClass);
+            var bytes = Bytes.ofData(event.data);
+            var packet:I = PacketUtil.fromBytes(bytes, queue.packetClass);
             receive(packet);
         } catch (error:Dynamic) {
             handler.emit(ConnectionEvent.ERROR(event));
@@ -77,6 +78,7 @@ class JsConnection<O:Message, I:Message> extends BaseConnection<O, I> {
 
     override public function send(packet:O):Void {
         super.send(packet);
-        socket.send(WebSocketTools.packet2string(packet));
+        var bytes = PacketUtil.toBytes(packet);
+        socket.send(bytes.getData());
     }
 }
diff --git a/src/common/haxe/ru/m/connect/neko/NekoConnection.hx b/src/common/haxe/ru/m/connect/neko/NekoConnection.hx
index f6709bd..53626a3 100755
--- a/src/common/haxe/ru/m/connect/neko/NekoConnection.hx
+++ b/src/common/haxe/ru/m/connect/neko/NekoConnection.hx
@@ -1,6 +1,5 @@
 package ru.m.connect.neko;
 
-import haxe.io.BytesOutput;
 import protohx.Message;
 import sys.net.Socket;
 
@@ -19,9 +18,7 @@ class NekoConnection<O:Message, I:Message> extends BaseConnection<O, I> {
 
     private function _send(packet:O):Void {
         try {
-            var b = new BytesOutput();
-            packet.writeTo(b);
-            var bytes = b.getBytes();
+            var bytes = PacketUtil.toBytes(packet);
             socket.output.writeUInt16(bytes.length);
             socket.output.write(bytes);
             socket.output.flush();
diff --git a/src/common/haxe/ru/m/connect/neko/NekoWebConnection.hx b/src/common/haxe/ru/m/connect/neko/NekoWSConnection.hx
similarity index 82%
rename from src/common/haxe/ru/m/connect/neko/NekoWebConnection.hx
rename to src/common/haxe/ru/m/connect/neko/NekoWSConnection.hx
index ea797f8..84c4aa3 100644
--- a/src/common/haxe/ru/m/connect/neko/NekoWebConnection.hx
+++ b/src/common/haxe/ru/m/connect/neko/NekoWSConnection.hx
@@ -3,10 +3,11 @@ package ru.m.connect.neko;
 import haxe.crypto.BaseCode;
 import haxe.crypto.Sha1;
 import haxe.io.Bytes;
+import haxe.io.BytesBuffer;
 import protohx.Message;
 import sys.net.Socket;
 
-class NekoWebConnection<O:Message, I:Message> extends NekoConnection<O, I> {
+class NekoWSConnection<O:Message, I:Message> extends NekoConnection<O, I> {
 
     private var opened:Bool;
 
@@ -16,12 +17,8 @@ class NekoWebConnection<O:Message, I:Message> extends NekoConnection<O, I> {
     }
 
     override private function _send(packet:O):Void {
-        try {
-            var data = WebSocketTools.packet2string(packet);
-            writeData(data, socket);
-        } catch (error:Dynamic) {
-            L.e('Proto', 'Error send packet: ${packet}', error);
-        }
+        var data = PacketUtil.toBytes(packet);
+        writeData(data, socket);
     }
 
     override public function pushData(bytes:Bytes):Void {
@@ -36,13 +33,12 @@ class NekoWebConnection<O:Message, I:Message> extends NekoConnection<O, I> {
         } else {
             var data = parseData(bytes);
             if (data != null) {
-                var packet:I = WebSocketTools.string2packet(data, queue.packetClass);
+                var packet:I = PacketUtil.fromBytes(data, queue.packetClass);
                 receive(packet);
             }
         }
     }
 
-
     private function encodeBase64(content:String):String {
         var suffix = switch (content.length % 3)
         {
@@ -73,8 +69,8 @@ class NekoWebConnection<O:Message, I:Message> extends NekoConnection<O, I> {
         socket.output.writeString(s);
     }
 
-    private function writeData(data:String, socket:sys.net.Socket, isServer = true):Void {
-        socket.output.writeByte(0x81);
+    private function writeData(data:Bytes, socket:sys.net.Socket, isServer = true):Void {
+        socket.output.writeByte(130);
 
         var len = 0;
         if (data.length < 126) len = data.length;
@@ -97,7 +93,7 @@ class NekoWebConnection<O:Message, I:Message> extends NekoConnection<O, I> {
         }
 
         if (isServer) {
-            socket.output.writeString(data);
+            socket.output.writeBytes(data, 0, data.length);
         }
         else {
             var mask = [ Std.random(256), Std.random(256), Std.random(256), Std.random(256) ];
@@ -105,29 +101,29 @@ class NekoWebConnection<O:Message, I:Message> extends NekoConnection<O, I> {
             socket.output.writeByte(mask[1]);
             socket.output.writeByte(mask[2]);
             socket.output.writeByte(mask[3]);
-            var maskedData = new StringBuf();
+            var maskedData = new BytesBuffer();
             for (i in 0...data.length) {
-                maskedData.addChar(data.charCodeAt(i) ^ mask[i % 4]);
+                maskedData.addByte(data.get(i) ^ mask[i % 4]);
             }
-            socket.output.writeString(maskedData.toString());
+            socket.output.writeBytes(maskedData.getBytes(), 0, maskedData.length);
         }
     }
 
-    private function parseData(bytes:Bytes):String {
+    private function parseData(bytes:Bytes):Bytes {
         var p = 0;
         var opcode = bytes.get(p++);
 
         if (opcode == 0x00) {
-            var s = "";
+            var data = new BytesBuffer();
             var b:Int;
             while ((b = bytes.get(p++)) != 0xFF) {
-                s += String.fromCharCode(b);
+                data.addByte(b);
             }
-            return s;
+            return data.getBytes();
         }
 
-        // 0x81 = fin & text
-        if (opcode == 0x81) {
+        // 130 = binary data
+        if (opcode == 130) {
             var len = bytes.get(p++);
 
             // mask
@@ -158,13 +154,13 @@ class NekoWebConnection<O:Message, I:Message> extends NekoConnection<O, I> {
 
                 //Lib.println("mask = " + mask);
 
-                var data = new StringBuf();
+                var data = new BytesBuffer();
                 for (i in 0...len) {
-                    data.addChar(bytes.get(p++) ^ mask[i % 4]);
+                    data.addByte(bytes.get(p++) ^ mask[i % 4]);
                 }
 
                 //Lib.println("readed = " + data.toString());
-                return data.toString();
+                return data.getBytes();
             } else {
                 throw "Expected masked data.";
             }
diff --git a/src/server/haxe/ru/m/tankz/server/session/ProtoSession.hx b/src/server/haxe/ru/m/tankz/server/session/ProtoSession.hx
index b3c4189..4bd78e7 100644
--- a/src/server/haxe/ru/m/tankz/server/session/ProtoSession.hx
+++ b/src/server/haxe/ru/m/tankz/server/session/ProtoSession.hx
@@ -1,10 +1,10 @@
 package ru.m.tankz.server.session;
 
-import ru.m.connect.neko.NekoWebConnection;
 import haxe.io.Bytes;
 import protohx.Message;
 import ru.m.connect.IConnection;
 import ru.m.connect.neko.NekoConnection;
+import ru.m.connect.neko.NekoWSConnection;
 import sys.net.Socket;
 
 class ProtoSession<O:Message, I:Message> implements ISession {
@@ -37,7 +37,7 @@ class ProtoSession<O:Message, I:Message> implements ISession {
             return null;
         }
         if (StringTools.startsWith(str, "GET")) {
-            connection = new NekoWebConnection<O, I>(socket, request);
+            connection = new NekoWSConnection<O, I>(socket, request);
         } else {
             connection = new NekoConnection<O, I>(socket, request);
         }
diff --git a/src/server/haxe/ru/m/tankz/server/session/_Session.hx b/src/server/haxe/ru/m/tankz/server/session/_Session.hx
index d6d6c74..9727a66 100755
--- a/src/server/haxe/ru/m/tankz/server/session/_Session.hx
+++ b/src/server/haxe/ru/m/tankz/server/session/_Session.hx
@@ -7,7 +7,7 @@ import com.hurlant.crypto.prng.Random;
 import haxe.io.Bytes;
 import ru.m.connect.IConnection;
 import ru.m.connect.neko.NekoConnection;
-import ru.m.connect.neko.NekoWebConnection;
+import ru.m.connect.neko.NekoWSConnection;
 import ru.m.tankz.proto.core.UserProto;
 import ru.m.tankz.proto.pack.CreateGameRequest;
 import ru.m.tankz.proto.pack.CreateGameResponse;
@@ -72,7 +72,7 @@ class _Session {
                 return;
             }
             if (StringTools.startsWith(str, "GET")) {
-                connection = new NekoWebConnection<Response, Request>(socket, Request);
+                connection = new NekoWSConnection<Response, Request>(socket, Request);
             } else {
                 connection = new NekoConnection<Response, Request>(socket, Request);
             }