update basic form

SocketStudy/ClientForm/MainForm.Designer.cs

@@ -30,7 +30,9 @@ namespace ClientForm
 		private void InitializeComponent()
 		{
 			this.logConsole = new System.Windows.Forms.TextBox();
-			this.button1 = new System.Windows.Forms.Button();
+			this.stringButton = new System.Windows.Forms.Button();
+			this.objectButton = new System.Windows.Forms.Button();
+			this.imageButton = new System.Windows.Forms.Button();
 			this.SuspendLayout();
 			// 
 			// logConsole
@@ -41,25 +43,48 @@ namespace ClientForm
 			this.logConsole.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.logConsole.Multiline = true;
 			this.logConsole.Name = "logConsole";
+			this.logConsole.ScrollBars = System.Windows.Forms.ScrollBars.Both;
 			this.logConsole.Size = new System.Drawing.Size(470, 344);
 			this.logConsole.TabIndex = 1;
 			// 
-			// button1
+			// stringButton
 			// 
-			this.button1.Location = new System.Drawing.Point(177, 35);
-			this.button1.Name = "button1";
-			this.button1.Size = new System.Drawing.Size(75, 23);
-			this.button1.TabIndex = 2;
-			this.button1.Text = "button1";
-			this.button1.UseVisualStyleBackColor = true;
-			this.button1.Click += new System.EventHandler(this.button1_Click);
+			this.stringButton.Location = new System.Drawing.Point(34, 39);
+			this.stringButton.Name = "stringButton";
+			this.stringButton.Size = new System.Drawing.Size(75, 23);
+			this.stringButton.TabIndex = 2;
+			this.stringButton.Text = "string";
+			this.stringButton.UseVisualStyleBackColor = true;
+			this.stringButton.Click += new System.EventHandler(this.stringButton_Click);
+			// 
+			// objectButton
+			// 
+			this.objectButton.Location = new System.Drawing.Point(146, 39);
+			this.objectButton.Name = "objectButton";
+			this.objectButton.Size = new System.Drawing.Size(75, 23);
+			this.objectButton.TabIndex = 2;
+			this.objectButton.Text = "object";
+			this.objectButton.UseVisualStyleBackColor = true;
+			this.objectButton.Click += new System.EventHandler(this.objectButton_Click);
+			// 
+			// imageButton
+			// 
+			this.imageButton.Location = new System.Drawing.Point(268, 39);
+			this.imageButton.Name = "imageButton";
+			this.imageButton.Size = new System.Drawing.Size(75, 23);
+			this.imageButton.TabIndex = 2;
+			this.imageButton.Text = "image";
+			this.imageButton.UseVisualStyleBackColor = true;
+			this.imageButton.Click += new System.EventHandler(this.imageButton_Click);
 			// 
 			// MainForm
 			// 
 			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 12F);
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
 			this.ClientSize = new System.Drawing.Size(498, 450);
-			this.Controls.Add(this.button1);
+			this.Controls.Add(this.imageButton);
+			this.Controls.Add(this.objectButton);
+			this.Controls.Add(this.stringButton);
 			this.Controls.Add(this.logConsole);
 			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
 			this.Name = "MainForm";
@@ -72,7 +97,9 @@ namespace ClientForm
 		#endregion
 
 		private System.Windows.Forms.TextBox logConsole;
-		private System.Windows.Forms.Button button1;
+		private System.Windows.Forms.Button stringButton;
+		private System.Windows.Forms.Button objectButton;
+		private System.Windows.Forms.Button imageButton;
 	}
 }
 

SocketStudy/ClientForm/MainForm.cs

@@ -9,6 +9,7 @@ using System.Diagnostics;
 using System.Drawing;
 using System.Linq;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 
@@ -20,6 +21,7 @@ namespace ClientForm
 		private PClient client;
 
 		private System.Timers.Timer heartBeatTimer;
+		private System.Timers.Timer testTimer;
 
 		public MainForm()
 		{
@@ -29,18 +31,25 @@ namespace ClientForm
 
 		private void InitInstance()
 		{
-			heartBeatClient = new PClient("127.0.0.1", 7778);
+			string clientId = PUtil.GetRandomString(5);
+			string heartBeatClientId = clientId + "_hb";
+
+			heartBeatClient = new PClient("127.0.0.1", 7778, heartBeatClientId);
 			heartBeatClient.OnReceived += HeartBeatClient_OnReceived;
 
-			client = new PClient("127.0.0.1", 7777);
+			client = new PClient("127.0.0.1", 7777, clientId);
 			client.OnReceived += Client_OnReceived;
 
 			heartBeatTimer = new System.Timers.Timer();
 			heartBeatTimer.Interval = 5000;
 			heartBeatTimer.Elapsed += HeartBeatTimer_Elapsed;
 			heartBeatTimer.Start();
-		}
 
+			testTimer = new System.Timers.Timer();
+			testTimer.Interval = 500;
+			testTimer.Elapsed += TestTimer_Elapsed;
+			testTimer.Start();
+		}
 
 		private void WriteLog(string log)
 		{
@@ -51,42 +60,68 @@ namespace ClientForm
 			else
 			{
 				logConsole.AppendText($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}] {log}" + Environment.NewLine);
-				PUtil.ScrollToEnd(logConsole);
+				//PUtil.ScrollToEnd(logConsole);
 			}
 		}
 
 		private void HeartBeatTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
 		{
-			heartBeatClient.Send("heartbeat");
+			heartBeatClient.Send(PServer.HB_CHECK);
 		}
 
-		private void HeartBeatClient_OnReceived(PClient sender, byte[] data)
+		private void HeartBeatClient_OnReceived(PClient sender, PDataType dataType, byte[] data)
 		{
-			string msg = Encoding.UTF8.GetString(data, 0, data.Length);
-			if (msg != "good")
+			if (dataType != PDataType.SimpleString)
 			{
-				msg = "WARNING!!! BAD HEARTBEAT!!!";
+				WriteLog("ERROR!!! WRONG DATA TYPE FOR HEART BEAT!!!");
+				return;
 			}
 
-			WriteLog(msg);
+			string msg = Encoding.UTF8.GetString(data, 0, data.Length);
+			if (msg != PServer.HB_CHECK)
+				WriteLog("WARNING!!! BAD HEARTBEAT!!!");
 		}
 
-		private void Client_OnReceived(PClient sender, byte[] data)
+		private void Client_OnReceived(PClient sender, PDataType dataType, byte[] data)
 		{
 			throw new NotImplementedException();
 		}
 
-		private void button1_Click(object sender, EventArgs e)
+		private void TestTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
+		{
+			//button1_Click(sender, e);
+		}
+
+		private void stringButton_Click(object sender, EventArgs e)
 		{
+			client.Send("String send test!");
+		}
+
+		private void objectButton_Click(object sender, EventArgs e)
+		{
+			Random rand = new Random();
 			Person person = new Person()
 			{
-				Name = "Kim",
-				Age = 35
+				Name = PUtil.GetRandomString(5),
+				Age = rand.Next(20, 100)
 			};
 
 			byte[] data = PSerializer.Serialize(person);
-			client.Send(data);
-			
+			client.Send(PDataType.Person, data);
+		}
+
+		private void imageButton_Click(object sender, EventArgs e)
+		{
+			OpenFileDialog dlg = new OpenFileDialog();
+			dlg.Filter = "JPG File|*.jpg|PNG File|*.png|All File|*.*";
+			if (dlg.ShowDialog() == DialogResult.Cancel)
+				return;
+
+			Image img = Image.FromFile(dlg.FileName);
+			byte[] data = PUtil.ImageToByteArray(img);
+			client.Send(PDataType.Image, data);
+
+			GC.Collect();
 		}
 	}
 }

SocketStudy/PComm/PClient.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Net;
 using System.Net.Sockets;
@@ -13,13 +14,13 @@ namespace PComm
 	{
 		private readonly int BUFF_SIZE = 8192;
 
-		public delegate void ClientReceivedHandler(PClient sender, byte[] data);
+		public delegate void ClientReceivedHandler(PClient sender, PDataType dataType, byte[] data);
 		public event ClientReceivedHandler OnReceived;
 
 		public delegate void ClientDisconnectedHandler(PClient sender);
 		public event ClientDisconnectedHandler Disconnected;
 
-		public string ID { get; private set; }
+		public string ID { get; set; }
 
 		public IPEndPoint EndPoint { get; private set; }
 
@@ -27,33 +28,49 @@ namespace PComm
 
 		private Socket socket;
 
-		public PClient(string ip, int port)
+		public PClient(string ip, int port, string id = null)
 		{
+			if (string.IsNullOrEmpty(id))
+				id = Guid.NewGuid().ToString();
+
 			socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
-			this.ID = Guid.NewGuid().ToString();
+			this.ID = id;
 			this.EndPoint = new IPEndPoint(IPAddress.Parse(ip), port);
 			socket.Connect(EndPoint);
 
+			// send ID
+			this.Send(PDataType.ClientID, Encoding.UTF8.GetBytes(this.ID));
+
 			socket.BeginReceive(new byte[] { 0 }, 0, 0, 0, AcceptCallback, null);
 		}
 
 		public PClient(Socket accepted)
 		{
+			if (string.IsNullOrEmpty(this.ID))
+				this.ID = Guid.NewGuid().ToString();
+
 			socket = accepted;
-			this.ID = Guid.NewGuid().ToString();
 			this.EndPoint = (IPEndPoint)socket.RemoteEndPoint;
 			socket.BeginReceive(new byte[] { 0 }, 0, 0, 0, AcceptCallback, null);
 		}
 
 		public int Send(string msg)
 		{
-			byte[] buff = Encoding.UTF8.GetBytes(msg);
-			return socket.Send(buff, SocketFlags.None);
+			socket.Send(BitConverter.GetBytes((int)PDataType.SimpleString), 0, 4, 0);
+			byte[] data = Encoding.UTF8.GetBytes(msg);
+			byte[] length = BitConverter.GetBytes(data.Length);
+			socket.Send(length, 0, 4, 0);
+
+			return socket.Send(data, SocketFlags.None);
 		}
 
-		public int Send(byte[] msg)
+		public int Send(PDataType dataType, byte[] data)
 		{
-			return socket.Send(msg, SocketFlags.None);
+			socket.Send(BitConverter.GetBytes((int)dataType), 0, 4, 0);
+			byte[] length = BitConverter.GetBytes(data.Length);
+			socket.Send(length, 0, 4, 0);
+
+			return socket.Send(data, SocketFlags.None);
 		}
 
 		private void AcceptCallback(IAsyncResult ar)
@@ -62,25 +79,58 @@ namespace PComm
 			{
 				socket.EndReceive(ar);
 
-				byte[] buff = new byte[BUFF_SIZE];
-				
-				int receiveSize = socket.Receive(buff, buff.Length, SocketFlags.None);
-				if (receiveSize <= 0)
-				{
-					Close();
+				// get data type
+				byte[] dataTypeBuff = new byte[4];
+				socket.Receive(dataTypeBuff, dataTypeBuff.Length, SocketFlags.None);
+				PDataType dataType = (PDataType)BitConverter.ToInt32(dataTypeBuff, 0);
 
-					if (Disconnected != null)
-						Disconnected(this);
-				}
-				else if (receiveSize < buff.Length)
+				// get data size
+				byte[] sizeBuff = new byte[4];
+				socket.Receive(sizeBuff, sizeBuff.Length, SocketFlags.None);
+				int dataSize = BitConverter.ToInt32(sizeBuff, 0);
+
+				using (MemoryStream ms = new MemoryStream())
 				{
-					Array.Resize<byte>(ref buff, receiveSize);
-				}
+					while (dataSize > 0)
+					{
+						byte[] buff;
+						if (dataSize < BUFF_SIZE)
+							buff = new byte[dataSize];
+						else
+							buff = new byte[BUFF_SIZE];
 
-				if (OnReceived != null)
-					OnReceived(this, buff);
+						int receiveSize = socket.Receive(buff, buff.Length, SocketFlags.None);
+
+						ms.Write(buff, 0, buff.Length);
+						dataSize -= receiveSize;
+					}
+
+					byte[] data = ms.ToArray();
+
+					if (OnReceived != null)
+						OnReceived(this, dataType, data);
+				}
 
 				socket.BeginReceive(new byte[] { 0 }, 0, 0, 0, AcceptCallback, null);
+
+				//byte[] buff = new byte[BUFF_SIZE];
+				//int receiveSize = socket.Receive(buff, buff.Length, SocketFlags.None);
+				//if (receiveSize <= 0)
+				//{
+				//	Close();
+
+				//	if (Disconnected != null)
+				//		Disconnected(this);
+				//}
+				//else if (receiveSize < buff.Length)
+				//{
+				//	Array.Resize<byte>(ref buff, receiveSize);
+				//}
+
+				//if (OnReceived != null)
+				//	OnReceived(this, buff);
+
+				//socket.BeginReceive(new byte[] { 0 }, 0, 0, 0, AcceptCallback, null);
 			}
 			catch (Exception ex)
 			{

SocketStudy/PComm/PClientInfo.cs

@@ -9,7 +9,8 @@ namespace PComm
 	public class PClientInfo
 	{
 		public PClient Client { get; set; }
-		public string LastMessage { get; set; }
+		public PDataType LastDataType { get; set; }
+		public byte[] LastData { get; set; }
 		public DateTime CreatedAt { get; set; }
 		public DateTime LastReceivedAt { get; set; }
 	}

SocketStudy/PComm/PComm.csproj

@@ -43,6 +43,7 @@
   <ItemGroup>
     <Compile Include="PClient.cs" />
     <Compile Include="PClientInfo.cs" />
+    <Compile Include="PDataType.cs" />
     <Compile Include="PListener.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="PServer.cs" />

SocketStudy/PComm/PDataType.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PComm
+{
+	public enum PDataType
+	{
+		ClientID = 0,
+
+		SimpleString = 10,
+
+		Person = 100,
+
+		Image = 200,
+	}
+}

SocketStudy/PComm/PServer.cs

@@ -10,7 +10,9 @@ namespace PComm
 {
 	public class PServer
 	{
-		public delegate void ClientDataReceivedHandler(PClientInfo sender, byte[] data);
+		public static readonly string HB_CHECK = "OK";
+
+		public delegate void ClientDataReceivedHandler(PClientInfo sender, PDataType dataType, byte[] data);
 		public event ClientDataReceivedHandler OnDataReceived;
 
 		private PListener listener;
@@ -41,44 +43,62 @@ namespace PComm
 		private void Listener_SocketAccepted(object sender, SocketAcceptedEventArgs e)
 		{
 			PClient client = new PClient(e.Accepted);
-			client.OnReceived += Client_Received;
+			client.OnReceived += Client_OnReceived;
 			client.Disconnected += Client_Disconnected;
 
-			Debug.WriteLine($"Client accepted: {client.ID} @ { DateTime.Now}");
+			Debug.WriteLine($"[{ DateTime.Now}] Temp client accepted: {client.ID}");
 		}
 
-		private void Client_Disconnected(PClient sender)
-		{
-			if (clientInfoDict.ContainsKey(sender.ID))
-			{
-				lock (garbageLock)
-				{
-					clientInfoDict.Remove(sender.ID);
-				}
-			}
-		}
-
-		private void Client_Received(PClient sender, byte[] data)
+		private void Client_OnReceived(PClient sender, PDataType dataType, byte[] data)
 		{
 			lock (garbageLock)
 			{
 				if (!clientInfoDict.ContainsKey(sender.ID))
 					clientInfoDict.Add(sender.ID, new PClientInfo());
+			}
 
-				DateTime now = DateTime.Now;
+			DateTime now = DateTime.Now;
 
-				clientInfoDict[sender.ID].Client = sender;
-				clientInfoDict[sender.ID].CreatedAt = now;
-				clientInfoDict[sender.ID].LastReceivedAt = now;
-			}
+			clientInfoDict[sender.ID].Client = sender;
+			clientInfoDict[sender.ID].CreatedAt = now;
+			clientInfoDict[sender.ID].LastReceivedAt = now;
 
-			string msg = Encoding.UTF8.GetString(data);
-			clientInfoDict[sender.ID].LastMessage = msg;
+			clientInfoDict[sender.ID].LastDataType = dataType;
+			clientInfoDict[sender.ID].LastData = data;
+
+			// check client id
+			if (dataType == PDataType.ClientID)
+			{
+				string clientId = Encoding.UTF8.GetString(data, 0, data.Length);
+				clientInfoDict.Add(clientId, clientInfoDict[sender.ID]);
+
+				lock (garbageLock)
+				{
+					if (clientInfoDict.ContainsKey(sender.ID))
+						clientInfoDict.Remove(sender.ID);
+				}
+
+				sender.ID = clientId;
+				Debug.WriteLine($"[{ DateTime.Now}] client accepted: {sender.ID}");
+
+				return;
+			}
 
 			if (OnDataReceived != null && clientInfoDict.ContainsKey(sender.ID))
-				OnDataReceived(clientInfoDict[sender.ID], data);
+				OnDataReceived(clientInfoDict[sender.ID], dataType, data);
 
-			Debug.WriteLine(($"Client message({sender.ID}): {msg} @ { DateTime.Now}"));
+			Debug.WriteLine(($"[{ DateTime.Now}] Client message({sender.ID}): {dataType.ToString()}({data.Length})"));
+		}
+
+		private void Client_Disconnected(PClient sender)
+		{
+			if (clientInfoDict.ContainsKey(sender.ID))
+			{
+				lock (garbageLock)
+				{
+					clientInfoDict.Remove(sender.ID);
+				}
+			}
 		}
 
 		private void GarbageTimer_Elapsed(object sender, ElapsedEventArgs e)
@@ -95,5 +115,10 @@ namespace PComm
 				clientInfoDict.Remove(key);
 			}
 		}
+
+		public List<PClientInfo> ClientInfoList
+		{
+			get { return clientInfoDict.Values.ToList(); }
+		}
 	}
 }

SocketStudy/PObject/PObject.csproj

@@ -45,5 +45,11 @@
     <Compile Include="PSerializer.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\PComm\PComm.csproj">
+      <Project>{A88648B7-3EAE-4BFF-B5EF-2FED447C7B9C}</Project>
+      <Name>PComm</Name>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

SocketStudy/PUtil/PUtil.cs

@@ -1,14 +1,31 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Drawing;
+using System.Drawing.Imaging;
 using System.Windows.Forms;
 
 namespace PUtility
 {
     public class PUtil
     {
+		private static readonly string characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+		public static string GetRandomString(int length = 5)
+		{
+			char[] randCharArr = new char[length];
+			Random rand = new Random();
+			for (int i = 0; i < length; i++)
+			{
+				randCharArr[i] = characters[rand.Next(characters.Length)];
+			}
+
+			return new string(randCharArr);
+		}
+
         public static void ScrollToEnd(TextBox target)
 		{
             if (target == null)
@@ -17,5 +34,31 @@ namespace PUtility
             target.SelectionStart = target.Text.Length;
             target.ScrollToCaret();
         }
-    }
+
+		public static byte[] ImageToByteArray(Image image)
+		{
+			using (MemoryStream ms = new MemoryStream())
+			{
+				image.Save(ms, image.RawFormat);
+				return ms.ToArray();
+			}
+		}
+
+		public static Bitmap ByteToImage(byte[] imgByteArray)
+		{
+			using (MemoryStream ms = new MemoryStream(imgByteArray))
+			{
+				Bitmap img = Image.FromStream(ms) as Bitmap;
+				return img;
+			}
+		}
+
+		public static void SaveImage(string fileName, Image img, ImageFormat format)
+		{
+			using (Image saveImage = new Bitmap(img))
+			{
+				saveImage.Save(fileName, format);
+			}
+		}
+	}
 }

SocketStudy/PUtil/PUtility.csproj

@@ -33,6 +33,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.Windows.Forms" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />

SocketStudy/ServerForm/ChildForm/ImageForm.Designer.cs

@@ -0,0 +1,65 @@
+
+namespace ServerForm.ChildForm
+{
+	partial class ImageForm
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			this.pictureBox = new System.Windows.Forms.PictureBox();
+			((System.ComponentModel.ISupportInitialize)(this.pictureBox)).BeginInit();
+			this.SuspendLayout();
+			// 
+			// pictureBox
+			// 
+			this.pictureBox.Dock = System.Windows.Forms.DockStyle.Fill;
+			this.pictureBox.Location = new System.Drawing.Point(0, 0);
+			this.pictureBox.Name = "pictureBox";
+			this.pictureBox.Size = new System.Drawing.Size(545, 505);
+			this.pictureBox.TabIndex = 0;
+			this.pictureBox.TabStop = false;
+			// 
+			// ImageForm
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 12F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.BackColor = System.Drawing.Color.White;
+			this.ClientSize = new System.Drawing.Size(545, 505);
+			this.Controls.Add(this.pictureBox);
+			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.SizableToolWindow;
+			this.Name = "ImageForm";
+			this.Text = "Image";
+			this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.ImageForm_FormClosed);
+			((System.ComponentModel.ISupportInitialize)(this.pictureBox)).EndInit();
+			this.ResumeLayout(false);
+
+		}
+
+		#endregion
+
+		private System.Windows.Forms.PictureBox pictureBox;
+	}
+}

SocketStudy/ServerForm/ChildForm/ImageForm.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ServerForm.ChildForm
+{
+	public partial class ImageForm : Form
+	{
+		private string filePath;
+
+		public ImageForm(Image image)
+		{
+			InitializeComponent();
+			InitInstance(image);
+		}
+
+		private void InitInstance(Image image)
+		{
+			pictureBox.SizeMode = PictureBoxSizeMode.Zoom;
+			pictureBox.Image = image;
+		}
+
+		private void ImageForm_FormClosed(object sender, FormClosedEventArgs e)
+		{
+			GC.Collect();
+		}
+	}
+}

SocketStudy/ServerForm/ChildForm/ImageForm.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

SocketStudy/ServerForm/DataManager.cs

@@ -0,0 +1,59 @@
+using PComm;
+using PObject;
+using PUtility;
+using ServerForm.ChildForm;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ServerForm
+{
+	class DataManager
+	{
+		public static DataManager Instance { get; private set; } = new DataManager();
+
+		public void Process(PClientInfo clientInfo, PDataType dataType, byte[] data, LogHandler logHandler, FormHandler formHandler)
+		{
+			string log = "";
+			switch (dataType)
+			{
+				case PDataType.ClientID:
+					log = Encoding.UTF8.GetString(data, 0, data.Length);
+					logHandler(clientInfo.Client, log);
+					break;
+				case PDataType.SimpleString:
+					log = Encoding.UTF8.GetString(data, 0, data.Length);
+					logHandler(clientInfo.Client, log);
+					break;
+				case PDataType.Person:
+					Person person = PSerializer.Deserialize<Person>(data);
+					log = $"Name: {person.Name}, Age: {person.Age}";
+					logHandler(clientInfo.Client, log);
+					break;
+				case PDataType.Image:
+					Image image = PUtil.ByteToImage(data);
+					//string fileName = $@"{System.IO.Path.GetTempPath()}{Guid.NewGuid()}.bmp";
+					//PUtil.SaveImage(fileName, image, image.RawFormat);
+
+					log = $"Receive {data.Length.ToString("#,###")}bytes image";
+					logHandler(clientInfo.Client, log);
+
+					ImageForm imgForm = new ImageForm(image);
+					formHandler(imgForm);
+
+					GC.Collect();
+					break;
+				default:
+					logHandler(clientInfo.Client, "ERROR!!! UNEXPECTED DATA TYPE!!!");
+					break;
+			}
+		}
+	}
+}

SocketStudy/ServerForm/ServerForm.csproj

@@ -46,16 +46,26 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="mainForm.cs">
+    <Compile Include="DataManager.cs" />
+    <Compile Include="ChildForm\ImageForm.cs">
       <SubType>Form</SubType>
     </Compile>
-    <Compile Include="mainForm.Designer.cs">
-      <DependentUpon>mainForm.cs</DependentUpon>
+    <Compile Include="ChildForm\ImageForm.Designer.cs">
+      <DependentUpon>ImageForm.cs</DependentUpon>
+    </Compile>
+    <Compile Include="MainForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="MainForm.Designer.cs">
+      <DependentUpon>MainForm.cs</DependentUpon>
     </Compile>
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
-    <EmbeddedResource Include="mainForm.resx">
-      <DependentUpon>mainForm.cs</DependentUpon>
+    <EmbeddedResource Include="ChildForm\ImageForm.resx">
+      <DependentUpon>ImageForm.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="MainForm.resx">
+      <DependentUpon>MainForm.cs</DependentUpon>
     </EmbeddedResource>
     <EmbeddedResource Include="Properties\Resources.resx">
       <Generator>ResXFileCodeGenerator</Generator>
@@ -93,5 +103,6 @@
       <Name>PUtility</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

SocketStudy/ServerForm/mainForm.Designer.cs

@@ -30,24 +30,36 @@ namespace ServerForm
 		private void InitializeComponent()
 		{
 			this.logConsole = new System.Windows.Forms.TextBox();
+			this.clientListBox = new System.Windows.Forms.ListBox();
 			this.SuspendLayout();
 			// 
 			// logConsole
 			// 
 			this.logConsole.BackColor = System.Drawing.Color.Black;
 			this.logConsole.ForeColor = System.Drawing.Color.SpringGreen;
-			this.logConsole.Location = new System.Drawing.Point(12, 13);
+			this.logConsole.Location = new System.Drawing.Point(251, 13);
 			this.logConsole.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.logConsole.Multiline = true;
 			this.logConsole.Name = "logConsole";
-			this.logConsole.Size = new System.Drawing.Size(470, 344);
+			this.logConsole.ScrollBars = System.Windows.Forms.ScrollBars.Both;
+			this.logConsole.Size = new System.Drawing.Size(470, 364);
 			this.logConsole.TabIndex = 0;
 			// 
+			// clientListBox
+			// 
+			this.clientListBox.FormattingEnabled = true;
+			this.clientListBox.ItemHeight = 15;
+			this.clientListBox.Location = new System.Drawing.Point(12, 13);
+			this.clientListBox.Name = "clientListBox";
+			this.clientListBox.Size = new System.Drawing.Size(233, 364);
+			this.clientListBox.TabIndex = 2;
+			// 
 			// MainForm
 			// 
 			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-			this.ClientSize = new System.Drawing.Size(493, 368);
+			this.ClientSize = new System.Drawing.Size(733, 390);
+			this.Controls.Add(this.clientListBox);
 			this.Controls.Add(this.logConsole);
 			this.Font = new System.Drawing.Font("맑은 고딕", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(129)));
 			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
@@ -62,6 +74,7 @@ namespace ServerForm
 		#endregion
 
 		private System.Windows.Forms.TextBox logConsole;
+		private System.Windows.Forms.ListBox clientListBox;
 	}
 }
 

SocketStudy/ServerForm/mainForm.cs

@@ -1,6 +1,7 @@
 using PComm;
 using PObject;
 using PUtility;
+using ServerForm.ChildForm;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
@@ -13,16 +14,22 @@ using System.Windows.Forms;
 
 namespace ServerForm
 {
+	delegate void LogHandler(PClient client, string log);
+	delegate void FormHandler(Form form);
+
 	public partial class MainForm : Form
 	{
 		private readonly int PORT = 7777;
 		private readonly int HB_PORT = 7778;
 
-		private readonly string HB_MSG = "good";
-
 		private PServer mainServer;
 		private PServer heartBeatServer;
 
+		private LogHandler logHandler;
+		private FormHandler formHandler;
+
+		private System.Timers.Timer clientCheckTimer;
+
 		public MainForm()
 		{
 			InitializeComponent();
@@ -37,37 +44,90 @@ namespace ServerForm
 			heartBeatServer.OnDataReceived += HeartBeatServer_OnDataReceived;
 			mainServer.OnDataReceived += MainServer_OnDataReceived;
 
+			logHandler = new LogHandler(WriteLog);
+			formHandler = new FormHandler(ShowForm);
+
 			heartBeatServer.Start();
 			mainServer.Start();
+
+			clientCheckTimer = new System.Timers.Timer();
+			clientCheckTimer.Interval = 1000;
+			clientCheckTimer.Elapsed += ClientCheckTimer_Elapsed;
+			clientCheckTimer.Start();
+		}
+
+		private void WriteLog(PClient client, string log)
+		{
+			if (this.InvokeRequired)
+			{
+				this.Invoke((MethodInvoker)delegate () { WriteLog(client, log); });
+			}
+			else
+			{
+				logConsole.AppendText($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}] {client.ID}: {log}" + Environment.NewLine);
+				//PUtil.ScrollToEnd(logConsole);
+			}
 		}
 
-		private void WriteLog(string log)
+		private void ShowForm(Form form)
 		{
 			if (this.InvokeRequired)
 			{
-				Invoke((MethodInvoker)delegate () { WriteLog(log); });
+				this.Invoke((MethodInvoker)delegate () { ShowForm(form); });
 			}
 			else
 			{
-				logConsole.AppendText($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}] {log}" + Environment.NewLine);
-				PUtil.ScrollToEnd(logConsole);
+				form.Show();
 			}
 		}
 
-		private void MainServer_OnDataReceived(PClientInfo sender, byte[] data)
+		private void CheckClientInfo(List<PClientInfo> clinetInfoList)
 		{
-			Person person = PSerializer.Deserialize<Person>(data);
+			if (this.InvokeRequired)
+			{
+				this.Invoke((MethodInvoker)delegate () { CheckClientInfo(clinetInfoList); });
+			}
+			else
+			{
+				if (clientListBox.Items != null && clientListBox.Items.Count > 1)
+					clientListBox.Items.Clear();
 
-			WriteLog($"Name: {person.Name}, Age: {person.Age}");
+				foreach (PClientInfo clientInfo in clinetInfoList)
+				{
+					PClient client = clientInfo.Client;
+					string clientView = $"{client.ID}({client.EndPoint.Address}:{client.EndPoint.Port})";
+					clientListBox.Items.Add(clientView);
+				}
+			}
 		}
 
-		private void HeartBeatServer_OnDataReceived(PClientInfo sender, byte[] data)
+		private void MainServer_OnDataReceived(PClientInfo sender, PDataType dataType, byte[] data)
 		{
+			DataManager.Instance.Process(sender, dataType, data, logHandler, formHandler);
+		}
+
+		private void HeartBeatServer_OnDataReceived(PClientInfo sender, PDataType dataType, byte[] data)
+		{
+			if (dataType != PDataType.SimpleString)
+			{
+				logHandler(sender.Client, "ERROR!!! WRONG DATA TYPE FOR HEART BEAT!!!");
+				return;
+			}
+
 			string msg = Encoding.UTF8.GetString(data, 0, data.Length);
+			if (msg != PServer.HB_CHECK)
+				logHandler(sender.Client, "WARNING!!! BAD HEARTBEAT!!!");
 
-			WriteLog(msg);
+			sender.Client.Send(PServer.HB_CHECK);
+		}
+
+		private void ClientCheckTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
+		{
+			List<PClientInfo> clientInfoList = new List<PClientInfo>(mainServer.ClientInfoList.Count + heartBeatServer.ClientInfoList.Count);
+			clientInfoList.AddRange(mainServer.ClientInfoList);
+			clientInfoList.AddRange(heartBeatServer.ClientInfoList);
 
-			sender.Client.Send(HB_MSG);
+			CheckClientInfo(clientInfoList);
 		}
 	}
 }