Implementing Packet Framing

Surrounding packets with Int32 6655 to identify packet structure

Articulate-Network.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{36A8EC7B-B239-4744-892A-4FE633511E8D}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Articulate_Network</RootNamespace>
+    <AssemblyName>Articulate-Network</AssemblyName>
+    <TargetFrameworkVersion>v4.6</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Attributes\PacketIgnore.cs" />
+    <Compile Include="Client.cs" />
+    <Compile Include="Events\ClientConnectedEventArgs.cs" />
+    <Compile Include="Events\DataReceivedEventArgs.cs" />
+    <Compile Include="Interfaces\IManager.cs" />
+    <Compile Include="Interfaces\IPacket.cs" />
+    <Compile Include="Managers\PacketManager.cs" />
+    <Compile Include="Packets\Packet.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Server.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Enums\" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>

Articulate-Network.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31624.102
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Articulate-Network", "Articulate-Network.csproj", "{36A8EC7B-B239-4744-892A-4FE633511E8D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{36A8EC7B-B239-4744-892A-4FE633511E8D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{36A8EC7B-B239-4744-892A-4FE633511E8D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{36A8EC7B-B239-4744-892A-4FE633511E8D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{36A8EC7B-B239-4744-892A-4FE633511E8D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {81DCC61E-0253-4356-8FBF-8DF05F4B7FA1}
+	EndGlobalSection
+EndGlobal

Attributes/PacketIgnore.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network.Attributes
+{
+    public class PacketIgnore : Attribute
+    {
+
+    }
+}

Client.cs

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+using Articulate_Network.Interfaces;
+using Articulate_Network.Managers;
+using Articulate_Network.Packets;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network
+{
+    public class Client
+    {
+        List<IManager> managers = new List<IManager>();
+        int bufferSize = 16384;
+
+        TcpClient tcp;
+
+        public Client()
+        {
+            InitializeManagers();
+
+            tcp = new TcpClient()
+            {
+                SendBufferSize = bufferSize,
+                ReceiveBufferSize = bufferSize
+            };
+        }
+
+        public async Task<TcpClient> Connect(string ip, int port)
+        {
+            return await Task.Run(() =>
+                {
+                    try
+                    {
+                        tcp.Connect(ip, port);
+
+                        tcp.SendBufferSize = bufferSize;
+                        tcp.ReceiveBufferSize = bufferSize;
+
+                        _ = ReceiveData();
+
+                        return tcp;
+                    }
+                    catch (Exception e)
+                    {
+                        Console.WriteLine(e.Message);
+                        return tcp;
+                    }
+                }
+            );
+        }
+
+        public async Task<bool> SendPacket(Packet packet)
+        {
+            await Task.Run(() =>
+            {
+                byte[] buffer = Get<PacketManager>().SerializePacket(packet);
+
+                tcp.Client.Send(buffer, buffer.Length, SocketFlags.None);
+            });
+
+            return false;
+        }
+
+        public async Task<bool> ReceiveData()
+        {
+            await Task.Run(() =>
+            {
+                byte[] buffer = new byte[bufferSize];
+                int offset = 0;
+
+                while (true)
+                {
+                    int bytesToRead = tcp.Client.Receive(buffer, offset, buffer.Length - offset, SocketFlags.None);
+
+                    if (offset > 0)
+                        offset = 0;
+
+                    var ms = new MemoryStream(buffer);
+                    var br = new BinaryReader(ms);
+
+                    while (ms.Position < ms.Length)
+                    {
+                        if (ms.Position + 4 > ms.Length)
+                            break;
+
+                        int magic = br.ReadInt32();
+
+                        if (magic != 6655)
+                        {
+                            //Console.WriteLine("Not the start of a packet.");
+                            continue;
+                        }
+
+                        int length = (int)br.ReadInt64();
+
+                        if (ms.Position + length > ms.Length) // Received partial packet data, store partial data and continue
+                        {
+                            ms.Position -= 12;
+
+                            offset = (int)(ms.Length - ms.Position);
+
+                            //Console.WriteLine($"Partial data. Offset: {offset}");
+
+                            buffer = new byte[bufferSize];
+
+                            ms.Read(buffer, 0, offset);
+                            break;
+                        }
+
+                        ms.Position += length;
+
+                        int end = (int)br.ReadInt64();
+
+                        ms.Position -= 8;
+                        ms.Position -= length;
+
+                        if (length == end && length > 1) // Valid packet, trigger event
+                        {
+                            var p = Get<PacketManager>().DeserializePacket(ms);
+
+                            OnDataReceived(new Articulate_Network.Events.DataReceivedEventArgs()
+                            {
+                                Packet = p
+                            });
+                        }
+                        else
+                        {
+                            Console.WriteLine($"Not a valid packet. Length: {length} - End: {end} - Offset: {offset} - Position: {ms.Position}");
+                        }
+                    }
+                }
+            });
+
+            return false;
+        }
+
+        public void InitializeManagers()
+        {
+            var @interface = typeof(IManager);
+
+            foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
+            {
+                var managersFound = assembly.GetTypes().Where(t => @interface.IsAssignableFrom(t) && !t.IsAbstract);
+
+                foreach (var m in managersFound)
+                {
+                    var manager = (IManager)Activator.CreateInstance(m);
+
+                    manager.Initialize();
+
+                    managers.Add(manager);
+                }
+            }
+
+            Console.WriteLine($"Initialized {managers.Count} manager{(managers.Count > 1 ? "s" : "")}");
+        }
+
+        public T Get<T>()
+        {
+            return (T)managers.SingleOrDefault(t => typeof(T) == t.GetType());
+        }
+
+        protected virtual void OnDataReceived(Articulate_Network.Events.DataReceivedEventArgs e)
+        {
+            EventHandler<Articulate_Network.Events.DataReceivedEventArgs> handler = DataReceived;
+
+            if (handler != null)
+                handler(this, e);
+        }
+
+        public event EventHandler<Articulate_Network.Events.DataReceivedEventArgs> DataReceived;
+    }
+}

Events/ClientConnectedEventArgs.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network.Events
+{
+    public class ClientConnectedEventArgs : EventArgs
+    {
+        public TcpClient TcpClient { get; set; }
+    }
+}

Events/DataReceivedEventArgs.cs

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+using Articulate_Network.Packets;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network.Events
+{
+    public class DataReceivedEventArgs : EventArgs
+    {
+        public TcpClient Client { get; set; }
+        public Packet Packet { get; set; }
+    }
+}

Interfaces/IManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network.Interfaces
+{
+    public interface IManager
+    {
+        void Initialize();
+    }
+}

Interfaces/IPacket.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network.Interfaces
+{
+    public interface IPacket
+    {
+
+    }
+}

Managers/PacketManager.cs

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+using Articulate_Network.Attributes;
+using Articulate_Network.Interfaces;
+using Articulate_Network.Packets;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network.Managers
+{
+    public class PacketManager : IManager
+    {
+        Dictionary<Type, List<PropertyInfo>> packetInfo = new Dictionary<Type, List<PropertyInfo>>();
+        Dictionary<string, Packet> packetInstances = new Dictionary<string, Packet>();
+
+        public void Initialize()
+        {
+            var @interface = typeof(IPacket);
+
+            foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
+            {
+                var packetsFound = assembly.GetTypes().Where(t => @interface.IsAssignableFrom(t) && !t.IsAbstract);
+
+                foreach (var p in packetsFound)
+                {
+                    var packet = (Packet)Activator.CreateInstance(p);
+
+                    packetInstances.Add(p.Name, packet);
+                    LoadPacketInfo(packet);
+                }
+            }
+
+            Console.WriteLine($"Registered {packetInstances.Count} packet{(packetInstances.Count == 1 ? "" : "s")}");
+        }
+
+        public void LoadPacketInfo(IPacket packet)
+        {
+            packetInfo.Add(packet.GetType(), packet.GetType().GetProperties().Where(f => !Attribute.IsDefined(f, typeof(PacketIgnore))).OrderBy(f => f.Name).ToList());
+        }
+
+        public void Send(Packet packet)
+        {
+            Stopwatch watch = new Stopwatch();
+            watch.Start();
+
+            if (!packetInfo.ContainsKey(packet.GetType()))
+                LoadPacketInfo(packet);
+
+            watch.Stop();
+
+            Console.WriteLine($"Reflection time: {watch.ElapsedTicks / 10} microseconds");
+
+            //send packet
+
+            var serialized = SerializePacket(packet);
+
+            //var deserialized = DeserializePacket<T>(serialized);
+
+            //return (T)deserialized;
+        }
+        
+        public byte[] SerializePacket(Packet packet)
+        {
+            if (!packetInfo.ContainsKey(packet.GetType()))
+                LoadPacketInfo(packet);
+
+            Stopwatch watch = new Stopwatch();
+            watch.Start();
+            var fields = packetInfo[packet.GetType()];
+
+            MemoryStream buffer = new MemoryStream();
+            BinaryWriter binaryWriter = new BinaryWriter(buffer);
+
+            binaryWriter.Write(packet.GetType().Name);
+
+            foreach (var field in fields)
+            {
+                if (field.PropertyType == typeof(bool))
+                    binaryWriter.Write((bool)field.GetValue(packet));
+
+                if (field.PropertyType == typeof(int))
+                    binaryWriter.Write((int)field.GetValue(packet));
+
+                if (field.PropertyType == typeof(long))
+                    binaryWriter.Write((long)field.GetValue(packet));
+
+                if (field.PropertyType == typeof(string))
+                    binaryWriter.Write(((string)field.GetValue(packet)) ?? string.Empty);
+
+                if (field.PropertyType.IsEnum)
+                    binaryWriter.Write((int)field.GetValue(packet));
+
+                if (field.PropertyType == typeof(byte[]))
+                {
+                    byte[] buf = (byte[])field.GetValue(packet);
+                    binaryWriter.Write(buf.Length);
+                    binaryWriter.Write(buf);
+                }
+
+                //Console.WriteLine(field.Name);
+            }
+
+            byte[] packetData = buffer.ToArray();
+            long length = packetData.Length;
+
+            buffer.SetLength(0);
+
+            binaryWriter.Write(6655);
+            binaryWriter.Write(length);
+            binaryWriter.Write(packetData);
+            binaryWriter.Write(length);
+
+            //Console.WriteLine("Sent bytes: " + length);
+
+            watch.Stop();
+
+            //Console.WriteLine($"Serialize time: {watch.ElapsedTicks / 10} microseconds");
+            return buffer.ToArray();
+        }
+
+        public Packet DeserializePacket(MemoryStream stream)
+        {
+            Stopwatch watch = new Stopwatch();
+            watch.Start();
+            BinaryReader reader = new BinaryReader(stream);
+
+            string typeName = reader.ReadString();
+
+            //Console.WriteLine(typeName);
+
+            Packet packet = packetInstances[typeName];/*(IPacket)Activator.CreateInstance(typeof(T));*/
+
+            var fields = packetInfo[packet.GetType()];
+
+            //Console.WriteLine($"Stream length: {stream.Length}");
+            //Console.WriteLine($"Stream position: {stream.Position}");
+
+            foreach (var field in fields)
+            {
+                if (field.PropertyType == typeof(bool))
+                    field.SetValue(packet, reader.ReadBoolean());
+
+                if (field.PropertyType == typeof(int))
+                    field.SetValue(packet, reader.ReadInt32());
+
+                if (field.PropertyType == typeof(long))
+                    field.SetValue(packet, reader.ReadInt64());
+
+                if (field.PropertyType == typeof(string))
+                    field.SetValue(packet, reader.ReadString());
+
+                if (field.PropertyType.IsEnum)
+                    field.SetValue(packet, reader.ReadInt32());
+
+                if (field.PropertyType == typeof(byte[]))
+                {
+                    int length = reader.ReadInt32();
+                    field.SetValue(packet, reader.ReadBytes(length));
+                }
+            }
+
+            reader.ReadInt64();
+
+            watch.Stop();
+
+            //Console.WriteLine($"Deserialize time: {watch.ElapsedTicks / 10} microseconds");
+
+            return packet;
+        }
+
+        public Packet DeserializePacket(byte[] bytes)
+        {
+            return DeserializePacket(new MemoryStream(bytes));
+        }
+
+        public void HandlePacket(Packet packet)
+        {
+            Console.WriteLine(packet.GetType().Name);
+        }
+    }
+}

Packets/Packet.cs

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+using Articulate_Network.Interfaces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network.Packets
+{
+    public abstract class Packet : IPacket
+    {
+
+    }
+}

Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("Articulate-Network")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Queensland Government")]
+[assembly: AssemblyProduct("Articulate-Network")]
+[assembly: AssemblyCopyright("Copyright © Queensland Government 2021")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("36a8ec7b-b239-4744-892a-4fe633511e8d")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

Server.cs

@@ -0,0 +1,250 @@
+using Articulate_Network.Events;
+using Articulate_Network.Interfaces;
+using Articulate_Network.Managers;
+using Articulate_Network.Packets;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Articulate_Network
+{
+    public class Server
+    {
+        List<IManager> managers = new List<IManager>();
+        TcpClient[] clients = new TcpClient[300];
+
+        TcpListener tcpListener;
+
+        public Server()
+        {
+            InitializeManagers();
+        }
+
+        public async Task<bool> Start(string ip, int port)
+        {
+            tcpListener = new TcpListener(IPAddress.Parse(ip), port);
+
+            bool connected = await Task.Run(async () =>
+            {
+                try
+                {
+                    tcpListener.Start();
+
+                    _ = HandleConnections();
+
+                    return true;
+                }
+                catch (Exception e)
+                {
+                    Console.WriteLine(e.Message);
+                    return false;
+                }
+            }
+            );
+
+            return false;
+        }
+
+        public async Task HandleConnections()
+        {
+            while (true)
+            {
+                var client = await tcpListener.AcceptTcpClientAsync();
+
+                for (int i = 0; i < clients.Length; i++)
+                    if (clients[i] == null)
+                    {
+                        clients[i] = client;
+                        Console.WriteLine($"Client {i + 1} connected from {(client.Client.RemoteEndPoint as IPEndPoint).Address}.");
+                        break;
+                    }
+
+                _ = ReceiveData(client);
+
+                OnClientConnected(new ClientConnectedEventArgs() { TcpClient = client });
+            }
+        }
+
+        /*public async Task<bool> ReceiveData(TcpClient client)
+        {
+            await Task.Run(() =>
+            {
+                byte[] buffer = new byte[8192];
+                var ms = new MemoryStream(buffer);
+                var br = new BinaryReader(ms);
+
+                while (client.Connected)
+                {
+                    try
+                    {
+                        int bytesToRead = client.Client.Receive(buffer, buffer.Length, SocketFlags.None);
+
+                        ms.Position = 0;
+
+                        while (ms.Position < bytesToRead)
+                        {
+                            int length = (int)br.ReadInt64();
+
+                            OnDataReceived(new Articulate_Network.Events.DataReceivedEventArgs()
+                            {
+                                Packet = Get<PacketManager>().DeserializePacket(ms),
+                                Client = client
+                            });
+
+                            int end = (int)br.ReadInt64();
+                        }
+                    }
+                    catch (SocketException e)
+                    {
+
+                    }
+                }
+            });
+
+            return false;
+        }*/
+
+        public async Task<bool> ReceiveData(TcpClient client)
+        {
+            await Task.Run(() =>
+            {
+                byte[] buffer = new byte[16384];
+                int offset = 0;
+
+                while (client.Connected)
+                {
+                    try
+                    {
+                        int bytesToRead = client.Client.Receive(buffer, offset, buffer.Length - offset, SocketFlags.None);
+
+                        if (bytesToRead == 0)
+                        {
+                            Console.WriteLine("No data.");
+                            continue;
+                        }
+
+                        var ms = new MemoryStream(buffer);
+                        var br = new BinaryReader(ms);
+
+                        if (offset > 0)
+                            offset = 0;
+
+                        while (ms.Position < ms.Length)
+                        {
+                            br.ReadInt32();
+                            int length = (int)br.ReadInt64();
+                            if (length < 0)
+                                break;
+
+                            if (ms.Position + length > ms.Length)
+                            {
+                                ms.Position -= 8;
+
+                                buffer = new byte[16384];
+
+                                offset = (int)(ms.Length - ms.Position);
+
+                                ms.Read(buffer, 0, offset);
+
+                                break;
+                            }
+                            ms.Position += length;
+
+                            int end = (int)br.ReadInt64();
+
+                            ms.Position -= 8;
+
+                            if (length == end && length < 1)
+                                break;
+
+                            ms.Position -= length;
+
+                            var p = Get<PacketManager>().DeserializePacket(ms);
+
+                            OnDataReceived(new Articulate_Network.Events.DataReceivedEventArgs()
+                            {
+                                Packet = p,
+                                Client = client
+                            });
+
+                            br.ReadInt64();
+                        }
+                    }
+                    catch (SocketException e)
+                    {
+                        Console.WriteLine("Client disconnected.");
+                    }
+                }
+            });
+
+            return false;
+        }
+
+        public async Task<bool> SendPacket(TcpClient tcpClient, Packet packet)
+        {
+            await Task.Run(() =>
+            {
+                byte[] buffer = Get<PacketManager>().SerializePacket(packet);
+
+                int sentBytes = tcpClient.Client.Send(buffer, buffer.Length, SocketFlags.None);
+
+                if (sentBytes == 0)
+                    Console.WriteLine($"Sent: {sentBytes}");
+            });
+
+            return false;
+        }
+
+        public void InitializeManagers()
+        {
+            var @interface = typeof(IManager);
+
+            foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
+            {
+                var managersFound = assembly.GetTypes().Where(t => @interface.IsAssignableFrom(t) && !t.IsAbstract);
+
+                foreach (var m in managersFound)
+                {
+                    var manager = (IManager)Activator.CreateInstance(m);
+
+                    manager.Initialize();
+
+                    managers.Add(manager);
+                }
+            }
+
+            Console.WriteLine($"Initialized {managers.Count} manager{(managers.Count > 1 ? "s" : "")}");
+        }
+
+        public T Get<T>()
+        {
+            return (T)managers.SingleOrDefault(t => typeof(T) == t.GetType());
+        }
+
+        protected virtual void OnClientConnected(ClientConnectedEventArgs e)
+        {
+            EventHandler<ClientConnectedEventArgs> handler = ClientConnected;
+
+            if (handler != null)
+                handler(this, e);
+        }
+
+        public event EventHandler<ClientConnectedEventArgs> ClientConnected;
+
+        protected virtual void OnDataReceived(Articulate_Network.Events.DataReceivedEventArgs e)
+        {
+            EventHandler<Articulate_Network.Events.DataReceivedEventArgs> handler = DataReceived;
+
+            if (handler != null)
+                handler(this, e);
+        }
+
+        public event EventHandler<Articulate_Network.Events.DataReceivedEventArgs> DataReceived;
+    }
+}