package

lib/src/Net/IIP/DistributedPropertyContext.dart

@@ -0,0 +1,18 @@
+import 'DistributedConnection.dart';
+class DistributedPropertyContext
+{
+    dynamic value;
+    DistributedConnection connection;
+    dynamic Function(DistributedConnection) method;
+
+
+    DistributedPropertyContext(this.method)
+    {
+
+    }
+
+    DistributedPropertyContext.setter(this.value, this.connection)
+    {
+
+    }
+}

lib/src/Net/IIP/DistributedResource.dart

@@ -0,0 +1,300 @@
+/*
+ 
+Copyright (c) 2019 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+import '../../Resource/IResource.dart';
+import '../../Core/AsyncReply.dart';
+import '../../Data/PropertyValue.dart';
+import '../../Data/Structure.dart';
+import '../../Data/Codec.dart';
+import './DistributedConnection.dart';
+import '../Packets/IIPPacketAction.dart';
+
+class DistributedResource extends IResource
+{
+
+    int _instanceId;
+    DistributedConnection _connection;
+
+
+    bool _isAttached = false;
+    bool _isReady = false;
+
+
+
+    String _link;
+    List _properties;
+
+
+    bool _destroyed = false;
+
+    /// <summary>
+    /// Connection responsible for the distributed resource.
+    /// </summary>
+    DistributedConnection get connection => _connection;
+
+    /// <summary>
+    /// Resource link
+    /// </summary>
+    String get link => _link;
+
+    /// <summary>
+    /// Instance Id given by the other end.
+    /// </summary>
+    int get id => _instanceId;
+
+    /// <summary>
+    /// IDestructible interface.
+    /// </summary>
+    void destroy()
+    {
+        _destroyed = true;
+        emitArgs("destroy", [this]);
+    }
+      
+    /// <summary>
+    /// Resource is ready when all its properties are attached.
+    /// </summary>
+    bool get isReady => _isReady;
+    
+    /// <summary>
+    /// Resource is attached when all its properties are received.
+    /// </summary>
+    bool get IsAttached => _isAttached;
+   
+
+    // public DistributedResourceStack Stack
+    //{
+    //     get { return stack; }
+    //}
+
+        /// <summary>
+        /// Create a new distributed resource.
+        /// </summary>
+        /// <param name="connection">Connection responsible for the distributed resource.</param>
+        /// <param name="template">Resource template.</param>
+        /// <param name="instanceId">Instance Id given by the other end.</param>
+        /// <param name="age">Resource age.</param>
+    DistributedResource(DistributedConnection connection, int instanceId, int age, String link)
+    {
+        this._link = link;
+        this._connection = connection;
+        this._instanceId = instanceId;
+    }
+
+    void _ready()
+    {
+        _isReady = true;
+    }
+
+    /// <summary>
+    /// Export all properties with ResourceProperty attributed as bytes array.
+    /// </summary>
+    /// <returns></returns>
+    List<PropertyValue> serialize()
+    {
+
+        var props = new List<PropertyValue>(_properties.length);
+
+
+        for (var i = 0; i < _properties.length; i++)
+            props[i] = new PropertyValue(_properties[i], instance.getAge(i), instance.getModificationDate(i));
+
+        return props;
+    }
+
+    bool attached(List<PropertyValue> properties)
+    {
+        if (_isAttached)
+            return false;
+        else
+        {
+            _properties = new List(properties.length);// object[properties.Length];
+
+            //_events = new DistributedResourceEvent[Instance.Template.Events.Length];
+
+            for (var i = 0; i < properties.length; i++)
+            {
+                instance.setAge(i, properties[i].age);
+                instance.setModificationDate(i, properties[i].date);
+                _properties[i] = properties[i].value;
+            }
+
+            // trigger holded events/property updates.
+            //foreach (var r in afterAttachmentTriggers)
+            //    r.Key.Trigger(r.Value);
+
+            //afterAttachmentTriggers.Clear();
+
+            _isAttached = true;
+
+        }
+        return true;
+    }
+
+    void emitEventByIndex(int index, List<dynamic> args)
+    {
+        var et = instance.template.getEventTemplateByIndex(index);
+        //events[index]?.Invoke(this, args);
+        emitArgs(et.name, args);
+
+        instance.emitResourceEvent(null, null, et.name, args);
+    }
+
+    AsyncReply<dynamic> invokeByNamedArguments(int index, Structure namedArgs)
+    {
+        if (_destroyed)
+            throw new Exception("Trying to access destroyed object");
+
+        if (index >= instance.template.functions.length)
+            throw new Exception("Function index is incorrect");
+
+
+        return connection.sendInvokeByNamedArguments(_instanceId, index, namedArgs);
+    }
+
+    AsyncReply<dynamic> invokeByArrayArguments(int index, List<dynamic> args)
+    {
+        if (_destroyed)
+            throw new Exception("Trying to access destroyed object");
+
+        if (index >= instance.template.functions.length)
+            throw new Exception("Function index is incorrect");
+
+
+        return connection.sendInvokeByArrayArguments(_instanceId, index, args);
+    }
+
+
+    String _getMemberName(Symbol symbol)
+    {
+      var memberName = symbol.toString();
+      if (memberName.endsWith("=\")"))
+        return memberName.substring(8, memberName.length - 3);
+      else
+        return memberName.substring(8, memberName.length - 2);
+    }
+
+    @override  //overring noSuchMethod
+    noSuchMethod(Invocation invocation)
+    {
+      var memberName = _getMemberName(invocation.memberName);
+      
+      if (invocation.isMethod)
+      {
+          var ft = instance.template.getFunctionTemplateByName(memberName);
+        
+          if (_isAttached && ft!=null)
+          {
+            if (invocation.namedArguments.length > 0)
+            {
+              var namedArgs = new Structure();
+              for(var p in invocation.namedArguments.keys)
+                namedArgs[_getMemberName(p)] = invocation.namedArguments[p];
+              
+              return invokeByNamedArguments(ft.index, namedArgs);
+            }
+            else
+            {
+              return invokeByArrayArguments(ft.index, invocation.positionalArguments);
+            }
+          }
+      }
+      else if (invocation.isSetter)
+      {
+          var pt = instance.template.getPropertyTemplateByName(memberName);
+
+          if (pt != null)
+          {
+              set(pt.index, invocation.positionalArguments[0]);
+              return true;
+          }
+      }
+      else if (invocation.isGetter)
+      {
+        
+          var pt = instance.template.getPropertyTemplateByName(memberName);
+
+          if (pt != null)
+          {
+              return get(pt.index);
+          }
+      }
+
+      return null;
+    }
+
+
+
+    /// <summary>
+    /// Get a property value.
+    /// </summary>
+    /// <param name="index">Zero-based property index.</param>
+    /// <returns>Value</returns>
+    get(int index)
+    {
+        if (index >= _properties.length)
+            return null;
+        return _properties[index];
+    }
+
+
+    void updatePropertyByIndex(int index, dynamic value)
+    {
+        var pt = instance.template.getPropertyTemplateByIndex(index);
+        _properties[index] = value;
+        instance.emitModification(pt, value);
+    }
+
+    /// <summary>
+    /// Set property value.
+    /// </summary>
+    /// <param name="index">Zero-based property index.</param>
+    /// <param name="value">Value</param>
+    /// <returns>Indicator when the property is set.</returns>
+    AsyncReply<dynamic> set(int index, dynamic value)
+    {
+        if (index >= _properties.length)
+            return null;
+
+        var reply = new AsyncReply<dynamic>();
+
+        var parameters = Codec.compose(value, connection);
+        connection.sendRequest(IIPPacketAction.SetProperty)
+                    .addUint32(_instanceId)
+                    .addUint8(index)
+                    .addDC(parameters)
+                    .done()
+                    .then((res) 
+                    {
+                        // not really needed, server will always send property modified, 
+                        // this only happens if the programmer forgot to emit in property setter
+                        _properties[index] = value;
+                        reply.trigger(null);
+                    });
+
+        return reply;
+    }
+
+  
+}

lib/src/Net/IIP/DistributedResourceQueueItem.dart

@@ -0,0 +1,39 @@
+/*
+ 
+Copyright (c) 2019 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+import 'DistributedResourceQueueItemType.dart';
+import 'DistributedResource.dart';
+
+class DistributedResourceQueueItem
+{
+    final DistributedResourceQueueItemType type;
+    final int index;
+    final dynamic value;
+    final DistributedResource resource;
+
+    DistributedResourceQueueItem(this.resource, this.type, this.value, this.index)
+    {
+
+    }
+}

lib/src/Net/IIP/DistributedResourceQueueItemType.dart

@@ -0,0 +1,5 @@
+    enum DistributedResourceQueueItemType
+    {
+        Propery,
+        Event
+    }

lib/src/Net/NetworkBuffer.dart

@@ -0,0 +1,134 @@
+/*
+ 
+Copyright (c) 2019 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+import '../Data/DC.dart';
+import 'dart:core';
+
+class NetworkBuffer
+{
+    DC _data;
+
+    int _neededDataLength = 0;
+    
+    NetworkBuffer()
+    {
+        _data = new DC(0);
+    }
+
+    bool get protected => _neededDataLength > _data.length;
+        
+    int get available => _data.length;
+    
+
+
+    void holdForNextWrite(DC src, int offset, int size)
+    {
+        holdFor(src, offset, size, size + 1);
+    }
+
+
+    void holdFor(DC src, int offset, int size, int needed)
+    {
+        //lock (syncLock)
+        //{
+            if (size >= needed)
+                throw new Exception("Size >= Needed !");
+
+            //trim = true;
+            _data = DC.combine(src, offset, size, _data, 0, _data.length);
+            _neededDataLength = needed;
+
+        //}
+    }
+
+    void holdForNeeded(DC src, int needed)
+    {
+        holdFor(src, 0, src.length, needed);
+    }
+
+    bool protect(DC data, int offset, int needed)
+    {
+        int dataLength = _data.length - offset;
+
+        // protection
+        if (dataLength < needed)
+        {
+            holdFor(data, offset, dataLength, needed);
+            return true;
+        }
+        else
+            return false;
+    }
+
+
+
+    void write(DC src, int offset, int length)
+    {
+        //lock(syncLock)
+        _data.append(src, offset, length);
+    }
+
+    bool get canRead
+    {
+        if (_data.length == 0)
+            return false;
+        if (_data.length < _neededDataLength)
+            return false;
+
+        return true;
+    }
+
+    DC read()
+    {
+        //lock (syncLock)
+        //{
+        if (_data.length == 0)
+            return null;
+
+        DC rt = null;
+
+        if (_neededDataLength == 0)
+        {
+            rt = _data;
+            _data = new DC(0);
+        }
+        else
+        {
+            if (_data.length >= _neededDataLength)
+            {
+                rt = _data;
+                _data = new DC(0);
+                _neededDataLength = 0;
+                return rt;
+            }
+            else
+            {
+                return null;
+            }
+        }
+        //}
+
+        return rt;
+      }
+}

lib/src/Net/NetworkConnection.dart

@@ -0,0 +1,198 @@
+/*
+
+Copyright (c) 2019 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+import '../Core/IDestructible.dart';
+import 'Sockets/ISocket.dart';
+import 'Sockets/SocketState.dart';
+import 'NetworkBuffer.dart';
+import '../Data/DC.dart';
+import 'Sockets/IPEndPoint.dart';
+
+class NetworkConnection extends IDestructible
+{
+    ISocket _sock;
+
+    DateTime _lastAction;
+
+    //public delegate void DataReceivedEvent(NetworkConnection sender, NetworkBuffer data);
+    //public delegate void ConnectionClosedEvent(NetworkConnection sender);
+    //public delegate void ConnectionEstablishedEvent(NetworkConnection sender);
+
+    //public event ConnectionEstablishedEvent OnConnect;
+    //public event DataReceivedEvent OnDataReceived;
+    //public event ConnectionClosedEvent OnClose;
+    //public event DestroyedEvent OnDestroy;
+    //object receivingLock = new object();
+
+    bool _processing = false;
+
+
+    void destroy()
+    {
+        // if (connected)
+        close();
+        emitArgs("close", [this]);
+        //OnDestroy?.Invoke(this);
+    }
+
+    NetworkConnection()
+    {
+
+    }
+
+
+
+    ISocket get socket => _sock;
+    
+    void assign(ISocket socket)
+    {
+        _lastAction =  DateTime.now();
+        _sock = socket;
+        
+        socket.on("receive", socket_OnReceive);
+        socket.on("close", socket_OnClose);
+        socket.on("connect", socket_OnConnect);
+        
+    }
+
+    
+    void socket_OnConnect()
+    {
+        emitArgs("connect", [this]);
+    }
+
+    void socket_OnClose()
+    {
+        emitArgs("close", [this]);
+    }
+
+    void socket_OnReceive(NetworkBuffer buffer)
+    {
+        try
+        {
+            // Unassigned ?
+            if (_sock == null)
+                return;
+
+            // Closed ?
+            if (_sock.state == SocketState.Closed || _sock.state == SocketState.Terminated) // || !connected)
+                return;
+
+            _lastAction = DateTime.now();
+
+            if (!_processing)
+            {
+                _processing = true;
+
+                try
+                {
+                    while (buffer.available > 0 && !buffer.protected)
+                        dataReceived(buffer);
+                }
+                catch(ex)
+                {
+
+                }
+
+                _processing = false;
+            }
+            
+        }
+        catch (ex)
+        {
+            //Global.Log("NetworkConnection", LogType.Warning, ex.ToString());
+        }
+    }
+
+    ISocket unassign()
+    {
+        if (_sock != null)
+        {
+            // connected = false;
+            _sock.off("close", socket_OnClose);
+            _sock.off("connect", socket_OnConnect);
+            _sock.off("receive", socket_OnReceive);
+
+            var rt = _sock;
+            _sock = null;
+
+            return rt;
+        }
+        else
+            return null;
+    }
+
+    void dataReceived(NetworkBuffer data)
+    {
+        emitArgs("dataReceived", [data]);
+    }
+    
+    void close()
+    {
+      
+        try
+        {
+            if (_sock != null)
+                _sock.close();
+        }
+        catch(ex)
+        {
+            //Global.Log("NetworkConenction:Close", LogType.Error, ex.ToString());
+
+        }
+    }
+
+    DateTime get lastAction => _lastAction;
+    
+
+    IPEndPoint get remoteEndPoint => _sock?.remoteEndPoint;
+    
+    IPEndPoint get localEndPoint => _sock?.localEndPoint;
+    
+    bool get connected => _sock.state == SocketState.Established;
+
+    
+    void send(DC msg)
+    {
+      
+        try
+        {
+      
+            if (_sock != null)
+            {
+                _lastAction = DateTime.now();
+                _sock.send(msg);
+            }
+        }
+        catch (ex)
+        {
+            //Console.WriteLine(ex.ToString());
+        }
+    }
+
+    void sendString(String data)
+    {
+        send(DC.stringToBytes(data));
+    }
+}

lib/src/Net/Packets/IIPAuthPacket.dart

@@ -0,0 +1,278 @@
+/*
+ 
+Copyright (c) 2019 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+import '../../Data/DC.dart';
+import 'IIPAuthPacketAction.dart';
+import 'IIPAuthPacketCommand.dart';
+import 'IIPAuthPacketMethod.dart';
+
+class IIPAuthPacket
+{
+
+    int command;
+    int action;
+
+    int errorCode;
+    String errorMessage;
+
+    int localMethod;
+
+    DC sourceInfo;
+
+    DC hash;
+
+    DC sessionId;
+
+    int remoteMethod;
+
+    String domain;
+
+    int certificateId;
+
+    String localUsername;
+
+    String remoteUsername;
+
+    DC localPassword;
+
+    DC remotePassword;
+
+    DC localToken;
+
+    DC remoteToken;
+
+    DC asymetricEncryptionKey;
+
+    DC localNonce;
+
+    DC remoteNonce;
+
+    int _dataLengthNeeded;
+
+    bool _notEnough(int offset, int ends, int needed)
+    {
+        if (offset + needed > ends)
+        {
+            _dataLengthNeeded = needed - (ends - offset);
+            return true;
+        }
+        else
+            return false;
+    }
+
+    toString()
+    {
+        return command.toString() + " " + action.toString(); 
+    }
+
+    int parse(DC data, int offset, int ends)
+    {
+        var oOffset = offset;
+
+        if (_notEnough(offset, ends, 1))
+            return -_dataLengthNeeded;
+
+        command = (data[offset] >> 6);
+
+        if (command == IIPAuthPacketCommand.Action)
+        {
+            action = (data[offset++] & 0x3f);
+
+            if (action == IIPAuthPacketAction.AuthenticateHash)
+            {
+                if (_notEnough(offset, ends, 32))
+                    return -_dataLengthNeeded;
+
+                hash = data.clip(offset, 32);
+
+                //var hash = new byte[32];
+                //Buffer.BlockCopy(data, (int)offset, hash, 0, 32);
+                //Hash = hash;
+
+                offset += 32;
+            }
+            else if (action == IIPAuthPacketAction.NewConnection)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                var length = data.getUint16(offset);
+
+                offset += 2;
+
+                if (_notEnough(offset, ends, length))
+                    return -_dataLengthNeeded;
+
+                sourceInfo = data.clip(offset, length);
+
+                //var sourceInfo = new byte[length];
+                //Buffer.BlockCopy(data, (int)offset, sourceInfo, 0, length);
+                //SourceInfo = sourceInfo;
+
+                offset += 32;
+            }
+            else if (action == IIPAuthPacketAction.ResumeConnection
+                  || action == IIPAuthPacketAction.ConnectionEstablished)
+            {
+                //var sessionId = new byte[32];
+
+                if (_notEnough(offset, ends, 32))
+                    return -_dataLengthNeeded;
+
+                sessionId = data.clip(offset, 32);
+
+                //Buffer.BlockCopy(data, (int)offset, sessionId, 0, 32);
+                //SessionId = sessionId;
+
+                offset += 32;
+            }
+        }
+        else if (command == IIPAuthPacketCommand.Declare)
+        {
+            remoteMethod = ((data[offset] >> 4) & 0x3);
+            localMethod = ((data[offset] >> 2) & 0x3);
+            var encrypt = ((data[offset++] & 0x2) == 0x2);
+
+
+            if (_notEnough(offset, ends, 1))
+                return -_dataLengthNeeded;
+
+            var domainLength = data[offset++];
+            if (_notEnough(offset, ends, domainLength))
+                return -_dataLengthNeeded;
+
+            var domain = data.getString(offset, domainLength);
+
+            this.domain = domain;
+
+            offset += domainLength;
+        
+
+            if (remoteMethod == IIPAuthPacketMethod.Credentials)
+            {
+                if (localMethod == IIPAuthPacketMethod.None)
+                {
+                    if (_notEnough(offset, ends, 33))
+                        return -_dataLengthNeeded;
+
+
+                    remoteNonce = data.clip(offset, 32);
+
+                    offset += 32;
+                    
+                    var length = data[offset++];
+
+                    if (_notEnough(offset, ends, length))
+                        return -_dataLengthNeeded;
+
+                      remoteUsername = data.getString(offset, length);
+
+                      
+                    offset += length;
+                }
+            }
+
+            if (encrypt)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                var keyLength = data.getUint16(offset);
+
+                offset += 2;
+
+                if (_notEnough(offset, ends, keyLength))
+                    return -_dataLengthNeeded;
+
+    
+                asymetricEncryptionKey = data.clip(offset, keyLength);
+
+                offset += keyLength;
+            }
+        }
+        else if (command == IIPAuthPacketCommand.Acknowledge)
+        {
+            remoteMethod  = ((data[offset] >> 4) & 0x3);
+            localMethod = ((data[offset] >> 2) & 0x3);
+            var encrypt = ((data[offset++] & 0x2) == 0x2);
+
+            if (_notEnough(offset, ends, 1))
+                return -_dataLengthNeeded;
+
+
+            if (remoteMethod == IIPAuthPacketMethod.Credentials)
+            {
+                if (localMethod == IIPAuthPacketMethod.None)
+                {
+                    if (_notEnough(offset, ends, 32))
+                        return -_dataLengthNeeded;
+
+                    remoteNonce = data.clip(offset, 32);
+                    offset += 32;
+
+                  }
+            }
+
+            if (encrypt)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                var keyLength = data.getUint16(offset);
+
+                offset += 2;
+
+                if (_notEnough(offset, ends, keyLength))
+                    return -_dataLengthNeeded;
+
+                asymetricEncryptionKey = data.clip(offset, keyLength);
+
+                offset += keyLength;
+            }
+        }
+        else if (command == IIPAuthPacketCommand.Error)
+        {
+            if (_notEnough(offset, ends, 4))
+                return -_dataLengthNeeded;
+
+            offset++;
+            errorCode = data[offset++];
+
+
+            var cl = data.getUint16(offset);
+            offset += 2;
+
+            if (_notEnough(offset, ends, cl))
+                return -_dataLengthNeeded;
+
+            errorMessage = data.getString(offset, cl);
+            offset += cl;
+
+        }
+
+
+        return offset - oOffset;
+
+    }
+
+}

lib/src/Net/Packets/IIPAuthPacketAction.dart

@@ -0,0 +1,16 @@
+class IIPAuthPacketAction
+{
+    // Authenticate
+    static const int AuthenticateHash = 0;
+
+
+    //Challenge,
+    //CertificateRequest,
+    //CertificateReply,
+    //EstablishRequest,
+    //EstablishReply
+
+    static const int NewConnection = 0x20;
+    static const int ResumeConnection = 0x21;
+    static const int ConnectionEstablished = 0x28;
+}

lib/src/Net/Packets/IIPAuthPacketCommand.dart

@@ -0,0 +1,7 @@
+class IIPAuthPacketCommand
+{
+    static const int Action = 0;
+    static const int Declare = 1;
+    static const int Acknowledge = 2;
+    static const int Error = 3;
+}

lib/src/Net/Packets/IIPAuthPacketMethod.dart

@@ -0,0 +1,8 @@
+
+    class IIPAuthPacketMethod
+    {
+        static const int None = 0;
+        static const int Certificate = 1;
+        static const int Credentials = 2;
+        static const int Token = 3;
+    }

lib/src/Net/Packets/IIPPacket.dart

@@ -0,0 +1,727 @@
+/*
+
+Copyright (c) 2019 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+import '../../Data/DC.dart';
+import '../../Data/Guid.dart';
+
+import 'IIPPacketAction.dart';
+import 'IIPPacketCommand.dart';
+import 'IIPPacketEvent.dart';
+import 'IIPPacketReport.dart';
+import '../../Data/Codec.dart';
+import '../../Data/DataType.dart';
+
+class IIPPacket
+{
+
+
+  
+
+
+
+    int report;
+
+    int command;
+
+    int action;
+
+    int event;
+
+    int previousCommand;
+
+
+    int previousAction;
+
+    int previousEvent;
+
+
+    int resourceId;
+    int newResourceId;
+
+    int childId;
+    int storeId;
+
+    int resourceAge;
+    DC content;
+    int errorCode;
+    String errorMessage;
+    String className ;
+    String resourceLink ;
+    Guid classId ;
+    int methodIndex ;
+    String methodName;
+    int callbackId ;
+    int progressValue;
+    int progressMax ;
+    DateTime fromDate ;
+    DateTime toDate;
+    int fromAge;
+    int toAge;
+
+    int _dataLengthNeeded;
+    int _originalOffset;
+
+
+    bool _notEnough(int offset, int ends, int needed)
+    {
+        if (offset + needed > ends)
+        {
+            //dataLengthNeeded = needed - (ends - offset);
+            _dataLengthNeeded = needed - (ends - _originalOffset);
+
+            return true;
+        }
+        else
+            return false;
+    }
+
+    int parse(DC data, int offset, int ends)
+    {
+        _originalOffset = offset;
+
+        if (_notEnough(offset, ends, 1))
+            return -_dataLengthNeeded;
+
+        previousCommand = command;
+
+        command = (data[offset] >> 6);
+        
+        if (command == IIPPacketCommand.Event)
+        {
+            event = (data[offset++] & 0x3f);
+
+            if (_notEnough(offset, ends, 4))
+                return -_dataLengthNeeded;
+
+            resourceId = data.getUint32(offset);
+            offset += 4;
+        }
+        else if (command == IIPPacketCommand.Report)
+        {
+            report = (data[offset++] & 0x3f);
+
+            if (_notEnough(offset, ends, 4))
+                return -_dataLengthNeeded;
+
+            callbackId = data.getUint32(offset);
+            offset += 4;
+        }
+        else
+        {
+            previousAction = action;
+            action = (data[offset++] & 0x3f);
+
+            if (_notEnough(offset, ends, 4))
+                return -_dataLengthNeeded;
+
+            callbackId = data.getUint32(offset);
+            offset += 4;
+        }
+
+        if (command == IIPPacketCommand.Event)
+        {
+            if (event == IIPPacketEvent.ResourceReassigned)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                newResourceId = data.getUint32( offset);
+                offset += 4;
+
+            }
+            else if (event == IIPPacketEvent.ResourceDestroyed)
+            {
+                // nothing to parse
+            }
+            else if (event == IIPPacketEvent.ChildAdded
+                    || event == IIPPacketEvent.ChildRemoved)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                childId = data.getUint32(offset);
+                offset += 4;
+            }
+            else if(event == IIPPacketEvent.Renamed)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                var cl = data.getUint16(offset);
+                offset += 2;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+
+                offset += cl;
+            }
+            else if (event == IIPPacketEvent.PropertyUpdated)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                methodIndex = data[offset++];
+
+                var dt = data[offset++];
+                var size = DataType.size(dt);
+
+                if (size < 0)
+                {
+                    if (_notEnough(offset, ends, 4))
+                        return -_dataLengthNeeded;
+
+                    var cl = data.getUint32( offset);
+                    offset += 4;
+
+                    if (_notEnough(offset, ends, cl))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip( offset - 5, cl + 5);
+                    offset += cl;
+                }
+                else
+                {
+                    if (_notEnough(offset, ends, size))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip(offset - 1, size + 1);
+                    offset += size;
+                }
+            }
+            else if (event == IIPPacketEvent.EventOccurred)
+            {
+                if (_notEnough(offset, ends, 5)) 
+                    return -_dataLengthNeeded;
+
+                methodIndex = data[offset++];
+
+                var cl = data.getUint32( offset);
+                offset += 4;
+
+                content = data.clip(offset, cl);
+                offset += cl;
+
+            }
+            // Attribute
+            else if (event == IIPPacketEvent.AttributesUpdated)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                var cl = data.getUint32(offset);
+                offset += 4;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+
+                offset += cl;
+            }
+        }
+        else if (command == IIPPacketCommand.Request)
+        {
+            if (action == IIPPacketAction.AttachResource)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+            }
+            else if (action == IIPPacketAction.ReattachResource)
+            {
+                if (_notEnough(offset, ends, 12))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+                resourceAge = data.getUint64(offset);
+                offset += 8;
+
+            }
+            else if (action == IIPPacketAction.DetachResource)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+            }
+            else if (action == IIPPacketAction.CreateResource)
+            {
+                if (_notEnough(offset, ends, 12))
+                    return -_dataLengthNeeded;
+
+                storeId = data.getUint32(offset);
+                offset += 4;
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+                var cl = data.getUint32(offset);
+                offset += 4;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+            }
+            else if (action == IIPPacketAction.DeleteResource)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+            }
+            else if (action == IIPPacketAction.AddChild
+                    || action == IIPPacketAction.RemoveChild)
+            {
+                if (_notEnough(offset, ends, 8))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+                childId = data.getUint32(offset);
+                offset += 4;
+            }
+            else if (action == IIPPacketAction.RenameResource)
+            {
+                if (_notEnough(offset, ends, 6))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+                var cl = data.getUint16(offset);
+                offset += 2;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+                offset += cl;
+            }
+            else if (action == IIPPacketAction.TemplateFromClassName)
+            {
+                if (_notEnough(offset, ends, 1))
+                    return -_dataLengthNeeded;
+
+                var cl = data[offset++];
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                className = data.getString(offset, cl);
+                offset += cl;
+
+            }
+            else if (action == IIPPacketAction.TemplateFromClassId)
+            {
+                if (_notEnough(offset, ends, 16))
+                    return -_dataLengthNeeded;
+
+                classId = data.getGuid(offset);
+                offset += 16;
+
+            }
+            else if (action == IIPPacketAction.TemplateFromResourceId)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+            }
+            else if (action == IIPPacketAction.QueryLink)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                var cl = data.getUint16(offset);
+                offset += 2;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                resourceLink = data.getString(offset, cl);
+                offset += cl;
+            }
+            else if (action == IIPPacketAction.ResourceChildren
+                    || action == IIPPacketAction.ResourceParents)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+            }
+            else if (action == IIPPacketAction.ResourceHistory)
+            {
+                if (_notEnough(offset, ends, 20))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+                fromDate = data.getDateTime(offset);
+                offset += 8;
+
+                toDate = data.getDateTime(offset);
+                offset += 8;
+
+            }
+            else if (action == IIPPacketAction.InvokeFunctionArrayArguments
+                    || action == IIPPacketAction.InvokeFunctionNamedArguments)
+            {
+                if (_notEnough(offset, ends, 9))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+                methodIndex = data[offset++];
+
+                var cl = data.getUint32(offset);
+                offset += 4;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+                offset += cl;
+
+            }
+            else if (action == IIPPacketAction.GetProperty)
+            {
+                if (_notEnough(offset, ends, 5))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+                methodIndex = data[offset++];
+
+            }
+            else if (action == IIPPacketAction.GetPropertyIfModified)
+            {
+                if (_notEnough(offset, ends, 9))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+                methodIndex = data[offset++];
+
+                resourceAge = data.getUint64(offset);
+                offset += 8;
+
+            }
+            else if (action == IIPPacketAction.SetProperty)
+            {
+                if (_notEnough(offset, ends, 6))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+                methodIndex = data[offset++];
+
+
+                var dt = data[offset++];
+                var size = DataType.size(dt);
+
+                if (size < 0)
+                {
+                    if (_notEnough(offset, ends, 4))
+                        return -_dataLengthNeeded;
+
+                    var cl = data.getUint32(offset);
+                    offset += 4;
+
+                    if (_notEnough(offset, ends, cl))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip(offset-5, cl + 5);
+                    offset += cl;
+                }
+                else
+                {
+                    if (_notEnough(offset, ends, size))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip(offset-1, size + 1);
+                    offset += size;
+                }
+            }
+            // Attributes
+            else if (action == IIPPacketAction.UpdateAllAttributes
+                    || action == IIPPacketAction.GetAttributes
+                    || action == IIPPacketAction.UpdateAttributes
+                    || action == IIPPacketAction.ClearAttributes)
+            {
+                if (_notEnough(offset, ends, 8))
+                    return -_dataLengthNeeded;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+                var cl = data.getUint32(offset);
+                offset += 4;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+                offset += cl;
+            }
+        }
+        else if (command == IIPPacketCommand.Reply)
+        {
+            if (action == IIPPacketAction.AttachResource
+                || action == IIPPacketAction.ReattachResource)
+            {
+
+                if (_notEnough(offset, ends, 26))
+                    return -_dataLengthNeeded;
+
+                classId = data.getGuid(offset);
+                offset += 16;
+
+                resourceAge = data.getUint64(offset);
+                offset += 8;
+
+                var cl = data.getUint16(offset);
+                offset += 2;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                resourceLink = data.getString(offset, cl);
+                offset += cl;
+
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                cl = data.getUint32(offset);
+                offset += 4;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+                offset += cl;
+            }
+            else if (action == IIPPacketAction.DetachResource)
+            {
+                // nothing to do
+            }
+            else if (action == IIPPacketAction.CreateResource)
+            {
+                if (_notEnough(offset, ends, 20))
+                    return -_dataLengthNeeded;
+
+                //ClassId = data.GetGuid(offset);
+                //offset += 16;
+
+                resourceId = data.getUint32(offset);
+                offset += 4;
+
+            }
+            else if (action == IIPPacketAction.DetachResource)
+            {
+                // nothing to do
+            }
+                    // Inquire
+            else if (action == IIPPacketAction.TemplateFromClassName
+                    || action == IIPPacketAction.TemplateFromClassId
+                    || action == IIPPacketAction.TemplateFromResourceId
+                    || action == IIPPacketAction.QueryLink
+                    || action == IIPPacketAction.ResourceChildren
+                    || action == IIPPacketAction.ResourceParents
+                    || action == IIPPacketAction.ResourceHistory
+                    // Attribute
+                    || action == IIPPacketAction.GetAllAttributes
+                    || action == IIPPacketAction.GetAttributes)
+            {
+                if (_notEnough(offset, ends, 4))
+                    return -_dataLengthNeeded;
+
+                var cl = data.getUint32(offset);
+                offset += 4;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                content = data.clip(offset, cl);
+                offset += cl;
+            }
+            else if (action == IIPPacketAction.InvokeFunctionArrayArguments
+                || action == IIPPacketAction.InvokeFunctionNamedArguments
+                || action == IIPPacketAction.GetProperty
+                || action == IIPPacketAction.GetPropertyIfModified)
+            {
+                if (_notEnough(offset, ends, 1))
+                    return -_dataLengthNeeded;
+
+                var dt = data[offset++];
+                var size = DataType.size(dt);
+
+                if (size < 0)
+                {
+                    if (_notEnough(offset, ends, 4))
+                        return -_dataLengthNeeded;
+
+                    var cl = data.getUint32(offset);
+                    offset += 4;
+
+                    if (_notEnough(offset, ends, cl))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip(offset - 5, cl + 5);
+                    offset += cl;
+                }
+                else
+                {
+                    if (_notEnough(offset, ends, size))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip(offset - 1, size + 1);
+                    offset += size;
+                }
+            }
+            else if (action == IIPPacketAction.SetProperty)
+            {
+                // nothing to do
+            }
+        }
+        else if (command == IIPPacketCommand.Report)
+        {
+            if (report == IIPPacketReport.ManagementError)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                errorCode = data.getUint16(offset);
+                offset += 2;
+            }
+            else if (report == IIPPacketReport.ExecutionError)
+            {
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                errorCode = data.getUint16(offset);
+                offset += 2;
+
+                if (_notEnough(offset, ends, 2))
+                    return -_dataLengthNeeded;
+
+                var cl = data.getUint16(offset);
+                offset += 2;
+
+                if (_notEnough(offset, ends, cl))
+                    return -_dataLengthNeeded;
+
+                errorMessage = data.getString(offset, cl);
+                offset += cl;
+            }
+            else if (report == IIPPacketReport.ProgressReport)
+            {
+                if (_notEnough(offset, ends, 8))
+                    return -_dataLengthNeeded;
+
+                progressValue = data.getInt32(offset);
+                offset += 4;
+                progressMax = data.getInt32(offset);
+                offset += 4;
+            }
+            else if (report == IIPPacketReport.ChunkStream)
+            {
+                if (_notEnough(offset, ends, 1))
+                    return -_dataLengthNeeded;
+
+                var dt = data[offset++];
+                var size = DataType.size(dt);
+
+                if (size < 0)
+                {
+                    if (_notEnough(offset, ends, 4))
+                        return -_dataLengthNeeded;
+
+                    var cl = data.getUint32(offset);
+                    offset += 4;
+
+                    if (_notEnough(offset, ends, cl))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip(offset - 5, cl + 5);
+                    offset += cl;
+                }
+                else
+                {
+                    if (_notEnough(offset, ends, size))
+                        return -_dataLengthNeeded;
+
+                    content = data.clip(offset - 1, size + 1);
+                    offset += size;
+                }
+            }
+        } 
+
+        return offset - _originalOffset;
+    }
+
+
+
+
+
+
+
+        toString()
+    {
+        var rt = command.toString();
+
+        if (command == IIPPacketCommand.Event)
+        {
+            rt += " " + event.toString();
+        }
+        else if (command == IIPPacketCommand.Request)
+        {
+            rt += " " + action.toString();
+            if (action == IIPPacketAction.AttachResource)
+            {
+                rt += " CID: " + callbackId.toString() + " RID: " + resourceId.toString(); 
+            }
+        }
+        else if (command == IIPPacketCommand.Reply)
+            rt += " " + action.toString();
+        else if (command == IIPPacketCommand.Report)
+            rt += " " + report.toString();
+
+        return rt;
+    }
+
+}

lib/src/Net/Packets/IIPPacketAction.dart

@@ -0,0 +1,36 @@
+class IIPPacketAction
+{
+    // Request Manage
+    static const int AttachResource = 0x0;
+    static const int ReattachResource = 0x1;
+    static const int DetachResource = 0x2;
+    static const int CreateResource = 0x3;
+    static const int DeleteResource = 0x4;
+    static const int AddChild = 0x5;
+    static const int RemoveChild = 0x6;
+    static const int RenameResource = 0x7;
+
+    // Request Inquire
+    static const int TemplateFromClassName = 0x8;
+    static const int TemplateFromClassId = 0x9;
+    static const int TemplateFromResourceId = 0xA;
+    static const int QueryLink = 0xB;
+    static const int ResourceHistory = 0xC;
+    static const int ResourceChildren = 0xD;
+    static const int ResourceParents = 0xE;
+
+    // Request Invoke
+    static const int InvokeFunctionArrayArguments = 0x10;
+    static const int GetProperty = 0x11;
+    static const int GetPropertyIfModified = 0x12;
+    static const int SetProperty = 0x13;
+    static const int InvokeFunctionNamedArguments = 0x14;
+
+    // Request Attribute
+    static const int GetAllAttributes = 0x18;
+    static const int UpdateAllAttributes = 0x19;
+    static const int ClearAllAttributes = 0x1A;
+    static const int GetAttributes = 0x1B;
+    static const int UpdateAttributes = 0x1C;
+    static const int ClearAttributes = 0x1D;
+}

lib/src/Net/Packets/IIPPacketCommand.dart

@@ -0,0 +1,7 @@
+class IIPPacketCommand
+{
+    static const int Event = 0;
+    static const int Request = 1;
+    static const int Reply = 2;
+    static const int Report = 3;
+}

lib/src/Net/Packets/IIPPacketEvent.dart

@@ -0,0 +1,15 @@
+class IIPPacketEvent
+{
+    // Event Manage
+    static const int ResourceReassigned = 0;
+    static const int ResourceDestroyed = 1;
+    static const int ChildAdded = 2;
+    static const int ChildRemoved = 3;
+    static const int Renamed = 4;
+    // Event Invoke
+    static const int PropertyUpdated = 0x10;
+    static const int EventOccurred = 0x11;
+
+    // Attribute
+    static const int AttributesUpdated = 0x18;
+}

lib/src/Net/Packets/IIPPacketReport.dart

@@ -0,0 +1,7 @@
+class IIPPacketReport
+{
+    static const int ManagementError = 0;
+    static const int ExecutionError = 1;
+    static const int ProgressReport = 0x8;
+    static const int ChunkStream = 0x9;
+}

lib/src/Net/SendList.dart

@@ -0,0 +1,22 @@
+import '../Data/BinaryList.dart';
+import '../Core/AsyncReply.dart';
+import 'NetworkConnection.dart';
+
+class SendList extends BinaryList
+{
+    NetworkConnection connection;
+    AsyncReply<List<dynamic>> reply;
+
+    SendList(NetworkConnection connection, AsyncReply<List<dynamic>> reply)
+    {
+        this.reply = reply;
+        this.connection = connection;
+    }
+
+    @override 
+    AsyncReply<List<dynamic>> done()
+    {
+        connection.send(super.toDC());
+        return reply;
+    }
+}

lib/src/Net/Sockets/IPEndPoint.dart

@@ -0,0 +1,25 @@
+class IPEndPoint
+{
+    List<int> ip;
+    int port;
+
+
+  String getIP()
+  {
+    return ip.join(".");
+    //return "${(ip >> 24) & 0xFF}.${(ip >> 16) & 0xFF}.${(ip >> 8) & 0xFF}.${ip & 0xFF}";
+  }
+
+  String get address => getIP();
+
+    @override
+  String toString() {
+    return "${getIP()}:${port}";
+  }
+
+
+  IPEndPoint(this.ip, this.port)
+  {
+    
+  }
+}

lib/src/Net/Sockets/ISocket.dart

@@ -0,0 +1,47 @@
+/*
+ 
+Copyright (c) 2017 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+import '../../Core/IDestructible.dart';
+import '../../Data/DC.dart';
+import 'IPEndPoint.dart';
+import '../../Core/AsyncReply.dart';
+import 'SocketState.dart';
+
+abstract class ISocket extends IDestructible
+{
+    SocketState get state ; //{ get; }
+
+    //event ISocketReceiveEvent OnReceive;
+    //event ISocketConnectEvent OnConnect;
+    //event ISocketCloseEvent OnClose;
+
+    //void send(DC message);
+    void send(DC message, [int offset, int size]);
+    void close();
+    AsyncReply<bool> connect(String hostname, int port);
+    bool begin();
+
+    AsyncReply<ISocket> accept();
+    IPEndPoint remoteEndPoint;
+    IPEndPoint localEndPoint;
+}

lib/src/Net/Sockets/SocketState.dart

@@ -0,0 +1,9 @@
+    enum SocketState
+    {
+        Initial,
+        Listening,
+        Connecting,
+        Established,
+        Closed,
+        Terminated
+    }

lib/src/Net/Sockets/TCPSocket.dart

@@ -0,0 +1,212 @@
+/*
+ 
+Copyright (c) 2019 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+import 'dart:io';
+import 'ISocket.dart';
+import '../../Data/DC.dart';
+import '../NetworkBuffer.dart';
+import 'SocketState.dart';
+import 'IPEndPoint.dart';
+import '../../Core/AsyncReply.dart';
+
+class TCPSocket extends ISocket
+{
+    Socket sock;
+    NetworkBuffer receiveNetworkBuffer = new NetworkBuffer();
+
+    //bool asyncSending;
+    bool began = false;
+
+    SocketState _state = SocketState.Initial;
+
+    //public event ISocketReceiveEvent OnReceive;
+    //public event ISocketConnectEvent OnConnect;
+    //public event ISocketCloseEvent OnClose;
+    //public event DestroyedEvent OnDestroy;
+
+    //SocketAsyncEventArgs socketArgs = new SocketAsyncEventArgs();
+
+    /*
+    void connected(Task t)
+    {
+        state = SocketState.Established;
+        OnConnect?.Invoke();
+        Begin();
+    }
+    */
+
+    IPEndPoint _localEP, _remoteEP;
+
+    bool begin()
+    {
+        if (began)
+            return false;
+
+        began = true;
+
+        _localEP = IPEndPoint(sock.address.rawAddress, sock.port);
+        _remoteEP = IPEndPoint(sock.remoteAddress.rawAddress, sock.remotePort);
+        return true;
+    }
+
+    void dataHandler(List<int> data){
+      //print(new String.fromCharCodes(data).trim());
+
+
+        try
+        {
+            if (_state == SocketState.Closed || _state == SocketState.Terminated)
+                return;
+
+            var dc = new DC.fromList(data);
+            receiveNetworkBuffer.write(dc, 0, dc.length);
+            emitArgs("receive", [receiveNetworkBuffer]);
+
+        }
+        catch (ex)
+        {
+            if (_state != SocketState.Closed)// && !sock.connected)
+            {
+                _state = SocketState.Terminated;
+                close();
+            }
+
+        }
+
+    }
+
+    void errorHandler(error, StackTrace trace){
+      print(error);
+    }
+
+    void doneHandler(){
+      sock.destroy();
+    }
+
+    AsyncReply<bool> connect(String hostname, int port)
+    {
+      var rt = new AsyncReply<bool>();
+
+        try
+        {
+            _state = SocketState.Connecting;
+
+            Socket.connect(hostname, port).then((s){
+                sock = s;
+                s.listen(dataHandler, 
+                    onError: errorHandler, 
+                    onDone: doneHandler, 
+                    cancelOnError: false);
+                _state = SocketState.Established;
+                emitArgs("connect", []);
+                begin();
+                rt.trigger(true);
+
+            }).catchError((ex){
+              close();
+              rt.triggerError(ex);
+            });
+
+            
+        }
+        catch(ex)
+        {
+            rt.triggerError(ex);
+        }
+
+        return rt;
+    }
+
+
+
+
+    IPEndPoint get localEndPoint => _localEP;
+    IPEndPoint get remoteEndPoint => _remoteEP;
+
+   
+    SocketState get state => _state;
+    
+
+    TCPSocket.fromSocket(Socket socket)
+    {
+        sock = socket;
+        //if (socket.)
+          //  _state = SocketState.Established;
+    }
+
+    TCPSocket()
+    {
+      // default constructor
+    }
+
+    void close()
+    {
+        if (state != SocketState.Closed && state != SocketState.Terminated)
+            _state = SocketState.Closed;
+
+        sock?.close();
+
+        emitArgs("close", []);
+    }
+
+    
+    void send(DC message, [int offset, int size])
+    {
+        if (state == SocketState.Established)
+          sock.add(message.toList());
+    }
+
+
+
+    void destroy()
+    {
+        close();
+        emitArgs("destroy", [this]);
+    }
+
+    AsyncReply<ISocket> accept()
+    {
+
+
+        var reply = new AsyncReply<ISocket>();
+        return reply;
+
+/*
+  ServerSocket.bind(InternetAddress.ANY_IP_V4, 4567).then(
+    (ServerSocket server) {
+      server.listen(handleClient);
+    }
+  );
+
+  void handleClient(Socket client){
+  print('Connection from '
+    '${client.remoteAddress.address}:${client.remotePort}');
+
+  client.write("Hello from simple server!\n");
+  client.close();
+}
+
+*/
+    }
+}