update comm logic

SocketStudy/Client/Client.csproj

@@ -32,6 +32,26 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />

SocketStudy/ClientForm/ClientForm.csproj

@@ -32,6 +32,26 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />

SocketStudy/ClientForm/MainForm.Designer.cs

@@ -33,6 +33,7 @@ namespace ClientForm
 			this.stringButton = new System.Windows.Forms.Button();
 			this.objectButton = new System.Windows.Forms.Button();
 			this.imageButton = new System.Windows.Forms.Button();
+			this.fileButton = new System.Windows.Forms.Button();
 			this.SuspendLayout();
 			// 
 			// logConsole
@@ -77,11 +78,22 @@ namespace ClientForm
 			this.imageButton.UseVisualStyleBackColor = true;
 			this.imageButton.Click += new System.EventHandler(this.imageButton_Click);
 			// 
+			// fileButton
+			// 
+			this.fileButton.Location = new System.Drawing.Point(379, 39);
+			this.fileButton.Name = "fileButton";
+			this.fileButton.Size = new System.Drawing.Size(75, 23);
+			this.fileButton.TabIndex = 2;
+			this.fileButton.Text = "file";
+			this.fileButton.UseVisualStyleBackColor = true;
+			this.fileButton.Click += new System.EventHandler(this.fileButton_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.fileButton);
 			this.Controls.Add(this.imageButton);
 			this.Controls.Add(this.objectButton);
 			this.Controls.Add(this.stringButton);
@@ -100,6 +112,7 @@ namespace ClientForm
 		private System.Windows.Forms.Button stringButton;
 		private System.Windows.Forms.Button objectButton;
 		private System.Windows.Forms.Button imageButton;
+		private System.Windows.Forms.Button fileButton;
 	}
 }
 

SocketStudy/ClientForm/MainForm.cs

@@ -17,11 +17,13 @@ namespace ClientForm
 {
 	public partial class MainForm : Form
 	{
+		private readonly string SERVER_IP = "124.56.13.173";
+
 		private PClient heartBeatClient;
 		private PClient client;
 
 		private System.Timers.Timer heartBeatTimer;
-		private System.Timers.Timer testTimer;
+		private System.Timers.Timer GarbageTimer;
 
 		public MainForm()
 		{
@@ -34,21 +36,21 @@ namespace ClientForm
 			string clientId = PUtil.GetRandomString(5);
 			string heartBeatClientId = clientId + "_hb";
 
-			heartBeatClient = new PClient("127.0.0.1", 7778, heartBeatClientId);
+			heartBeatClient = new PClient(SERVER_IP, 37778, heartBeatClientId);
 			heartBeatClient.OnReceived += HeartBeatClient_OnReceived;
 
-			client = new PClient("127.0.0.1", 7777, clientId);
+			client = new PClient(SERVER_IP, 37777, clientId);
 			client.OnReceived += Client_OnReceived;
 
 			heartBeatTimer = new System.Timers.Timer();
-			heartBeatTimer.Interval = 5000;
+			heartBeatTimer.Interval = 1000 * 10;
 			heartBeatTimer.Elapsed += HeartBeatTimer_Elapsed;
 			heartBeatTimer.Start();
 
-			testTimer = new System.Timers.Timer();
+			GarbageTimer = new System.Timers.Timer();
-			testTimer.Interval = 500;
+			GarbageTimer.Interval = 1000 * 10;
-			testTimer.Elapsed += TestTimer_Elapsed;
+			GarbageTimer.Elapsed += GarbageTimer_Elapsed;
-			testTimer.Start();
+			GarbageTimer.Start();
 		}
 
 		private void WriteLog(string log)
@@ -79,7 +81,12 @@ namespace ClientForm
 
 			string msg = Encoding.UTF8.GetString(data, 0, data.Length);
 			if (msg != PServer.HB_CHECK)
+			{
 				WriteLog("WARNING!!! BAD HEARTBEAT!!!");
+				client.Reconnect();
+				heartBeatClient.Reconnect();
+			}
+				
 		}
 
 		private void Client_OnReceived(PClient sender, PDataType dataType, byte[] data)
@@ -87,9 +94,9 @@ namespace ClientForm
 			throw new NotImplementedException();
 		}
 
-		private void TestTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
+		private void GarbageTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
 		{
-			//button1_Click(sender, e);
+			GC.Collect();
 		}
 
 		private void stringButton_Click(object sender, EventArgs e)
@@ -107,7 +114,7 @@ namespace ClientForm
 			};
 
 			byte[] data = PSerializer.Serialize(person);
-			client.Send(PDataType.Person, data);
+			client.Send(PDataType.PersonObject, data);
 		}
 
 		private void imageButton_Click(object sender, EventArgs e)
@@ -118,8 +125,39 @@ namespace ClientForm
 				return;
 
 			Image img = Image.FromFile(dlg.FileName);
-			byte[] data = PUtil.ImageToByteArray(img);
+			byte[] data = PUtil.ImageToBytes(img);
-			client.Send(PDataType.Image, data);
+			client.Send(PDataType.ShowImage, data);
+
+			GC.Collect();
+		}
+
+		private void fileButton_Click(object sender, EventArgs e)
+		{
+			OpenFileDialog dlg = new OpenFileDialog();
+			dlg.Filter = "All File|*.*";
+			if (dlg.ShowDialog() == DialogResult.Cancel)
+				return;
+
+			string filePath = dlg.FileName;
+			string fileName = dlg.SafeFileName;
+
+			PFileData fileData = new PFileData()
+			{
+				FileName = fileName,
+				Data = PUtil.FileToBytes(filePath)
+			};
+
+			if (fileData.Data.Length >= 1000000000)
+			{
+				MessageBox.Show("1GB를 초과하는 데이터는 전송할 수 없습니다.");
+
+				GC.Collect();
+				return;
+			}
+
+
+			byte[] data = PSerializer.Serialize(fileData);
+			client.Send(PDataType.SaveFile, data);
 
 			GC.Collect();
 		}

SocketStudy/PComm/PClient.cs

@@ -1,7 +1,9 @@
-using System;
+using PUtility;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.IO.Compression;
 using System.Linq;
 using System.Net;
 using System.Net.Sockets;
@@ -36,7 +38,7 @@ namespace PComm
 			socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 			this.ID = id;
 			this.EndPoint = new IPEndPoint(IPAddress.Parse(ip), port);
-			socket.Connect(EndPoint);
+			socket.Connect(this.EndPoint);
 
 			// send ID
 			this.Send(PDataType.ClientID, Encoding.UTF8.GetBytes(this.ID));
@@ -54,23 +56,61 @@ namespace PComm
 			socket.BeginReceive(new byte[] { 0 }, 0, 0, 0, AcceptCallback, null);
 		}
 
+		public void Reconnect()
+		{
+			if (socket.Connected)
+				return;
+
+			socket.Connect(this.EndPoint);
+			
+			this.Send(PDataType.ClientID, Encoding.UTF8.GetBytes(this.ID));
+
+			socket.BeginReceive(new byte[] { 0 }, 0, 0, 0, AcceptCallback, null);
+		}
+
+		private int SendData(byte[] data)
+		{
+			byte[] toSendData;
+			// 데이터 크기 100B 이하 또는 50MB 이상 압축하지 않음 (CPU 부하시간 더 큼)
+			// 압축한 경우 1 전송, 아닌경우 0 전송
+			if (data.Length <= 100 || data.Length >= 50000000)
+			{
+				byte[] isCompressed = BitConverter.GetBytes(false);
+				socket.Send(isCompressed, SocketFlags.None);
+				toSendData = data;
+			}
+			else
+			{
+				byte[] isCompressed = BitConverter.GetBytes(true);
+				socket.Send(isCompressed, SocketFlags.None);
+				toSendData = PUtil.CompressBytes(data, CompressionLevel.Optimal);
+			}
+
+			byte[] length = BitConverter.GetBytes(toSendData.Length);
+			socket.Send(length, 0, 4, SocketFlags.None);
+
+			return socket.Send(toSendData, SocketFlags.None);
+		}
+
 		public int Send(string msg)
 		{
 			socket.Send(BitConverter.GetBytes((int)PDataType.SimpleString), 0, 4, 0);
 			byte[] data = Encoding.UTF8.GetBytes(msg);
-			byte[] length = BitConverter.GetBytes(data.Length);
+			//byte[] length = BitConverter.GetBytes(data.Length);
-			socket.Send(length, 0, 4, 0);
+			//socket.Send(length, 0, 4, 0);
 
-			return socket.Send(data, SocketFlags.None);
+			//return socket.Send(data, SocketFlags.None);
+			return SendData(data);
 		}
 
 		public int Send(PDataType dataType, byte[] data)
 		{
 			socket.Send(BitConverter.GetBytes((int)dataType), 0, 4, 0);
-			byte[] length = BitConverter.GetBytes(data.Length);
+			//byte[] length = BitConverter.GetBytes(data.Length);
-			socket.Send(length, 0, 4, 0);
+			//socket.Send(length, 0, 4, 0);
 
-			return socket.Send(data, SocketFlags.None);
+			//return socket.Send(data, SocketFlags.None);
+			return SendData(data);
 		}
 
 		private void AcceptCallback(IAsyncResult ar)
@@ -84,11 +124,17 @@ namespace PComm
 				socket.Receive(dataTypeBuff, dataTypeBuff.Length, SocketFlags.None);
 				PDataType dataType = (PDataType)BitConverter.ToInt32(dataTypeBuff, 0);
 
+				// check compressed
+				byte[] isCompressedBuff = new byte[1];
+				socket.Receive(isCompressedBuff, isCompressedBuff.Length, SocketFlags.None);
+				bool isCompressed = BitConverter.ToBoolean(isCompressedBuff, 0);
+
 				// 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())
 				{
 					while (dataSize > 0)
@@ -105,43 +151,50 @@ namespace PComm
 						dataSize -= receiveSize;
 					}
 
-					byte[] data = ms.ToArray();
+					byte[] receivedData = ms.ToArray();
+					byte[] data;
+					if (isCompressed)
+						data = PUtil.DecompressBytes(receivedData);
+					else
+						data = receivedData;
 
 					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)
 			{
-				this.Close();
+				Debug.WriteLine($"[ERROR] CleintAcceptCallback: {ex.Message}");
+				PFileManager.Instance.WriteLog($"[ERROR] CleintAcceptCallback: {ex.Message}");
+
+				if (CheckSocketConnection(socket))
+				{
+					socket.BeginReceive(new byte[] { 0 }, 0, 0, 0, AcceptCallback, null);
+				}
+				else
+				{
+					Debug.WriteLine($"[ERROR] Close socket {socket.RemoteEndPoint.ToString()}");
+					PFileManager.Instance.WriteLog($"[ERROR] Close socket {socket.RemoteEndPoint.ToString()}");
+
+					Close();
 
 					if (Disconnected != null)
 						Disconnected(this);
-
-				Debug.WriteLine($"[ERROR] CleintAcceptCallback: {ex.Message}");
 				}
 			}
+		}
+
+		private bool CheckSocketConnection(Socket socket)
+		{
+			bool availability = socket.Available == 0;
+			bool poll = socket.Poll(1000, SelectMode.SelectRead);
+			if (availability && poll)
+				return false;
+			else
+				return true;
+		}
 
 		public void Close()
 		{

SocketStudy/PComm/PComm.csproj

@@ -30,6 +30,24 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -49,5 +67,11 @@
     <Compile Include="PServer.cs" />
     <Compile Include="SocketAcceptedEventArgs.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\PUtil\PUtility.csproj">
+      <Project>{b6e7f933-eb73-4d83-94fa-fb17774f1d52}</Project>
+      <Name>PUtility</Name>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

SocketStudy/PComm/PDataType.cs

@@ -12,8 +12,10 @@ namespace PComm
 
 		SimpleString = 10,
 
-		Person = 100,
+		PersonObject = 100,
 
-		Image = 200,
+		ShowImage = 200,
+
+		SaveFile = 300,
 	}
 }

SocketStudy/PObject/PFileData.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PObject
+{
+	[Serializable]
+	public class PFileData
+	{
+		public string FileName { get; set;}
+
+		public byte[] Data { get; set; }
+	}
+}

SocketStudy/PObject/PObject.csproj

@@ -30,6 +30,24 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -42,6 +60,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Person.cs" />
+    <Compile Include="PFileData.cs" />
     <Compile Include="PSerializer.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>

SocketStudy/PUtil/PFileManager.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace PUtility
+{
+	public class PFileManager
+	{
+		public static PFileManager Instance { get; set; } = new PFileManager();
+
+		public string DirPath { get; set; } = Application.StartupPath + @"\Files";
+		public string LogDirPath { get; set; } = Application.StartupPath + @"\Logs";
+
+		private void CheckFolder(string dirPath)
+		{
+			DirectoryInfo directoryInfo = new DirectoryInfo(dirPath);
+			if (!directoryInfo.Exists)
+				directoryInfo.Create();
+		}
+
+		public void SaveFile(byte[] data, string fileName)
+		{
+			CheckFolder(this.DirPath);
+
+			if (string.IsNullOrEmpty(fileName))
+				fileName = Guid.NewGuid().ToString();
+
+			string fileSaveName = PUtil.CheckFileDuplication(this.DirPath, fileName);
+			string filePath = Path.Combine(this.DirPath, fileSaveName);
+			PUtil.BytesToFile(filePath, data);
+		}
+
+		public void WriteLog(string log)
+		{
+			CheckFolder(this.LogDirPath);
+
+			DateTime now = DateTime.Now;
+			string logPath = Path.Combine(this.LogDirPath, $"[{now.ToString("yyyyMMdd")}]log.txt");
+
+			File.AppendAllText(logPath, $"[{now.ToString("yyyyMMdd HH:mm:ss")}] {log + Environment.NewLine}");
+		}
+	}
+}

SocketStudy/PUtil/PUtil.cs

@@ -7,6 +7,8 @@ using System.Threading.Tasks;
 using System.Drawing;
 using System.Drawing.Imaging;
 using System.Windows.Forms;
+using System.IO.Compression;
+using System.Diagnostics;
 
 namespace PUtility
 {
@@ -35,22 +37,69 @@ namespace PUtility
             target.ScrollToCaret();
         }
 
-		public static byte[] ImageToByteArray(Image image)
+		public static byte[] CompressBytes(byte[] data, CompressionLevel level = CompressionLevel.Fastest)
 		{
+			byte[] compressedData;
+			using (MemoryStream ms = new MemoryStream())
+			{
+				using (GZipStream gs = new GZipStream(ms, level))
+				{
+					gs.Write(data, 0, data.Length);
+				}
+
+				compressedData = ms.ToArray();
+			}
+
+			Debug.WriteLine($"Compressed{data.Length} to {compressedData.Length} ({(float)compressedData.Length / (float)data.Length * 100f}%)");
+
+			return compressedData;
+		}
+
+		public static byte[] DecompressBytes(byte[] data)
+		{
+			byte[] decompressedData;
+			using (MemoryStream resultStream = new MemoryStream())
+			{
+				using (MemoryStream ms = new MemoryStream(data))
+				{
+					using (GZipStream gs = new GZipStream(ms, CompressionMode.Decompress))
+					{
+						gs.CopyTo(resultStream);
+						gs.Close();
+					}
+				}
+
+				decompressedData = resultStream.ToArray();
+			}
+
+			//Debug.WriteLine($"Decompressed{data.Length} to {decompressedData.Length} ({(float)decompressedData.Length / (float)data.Length * 100f}%)");
+
+			return decompressedData;
+			
+		}
+
+
+		public static byte[] ImageToBytes(Image image)
+		{
+			byte[] data;
 			using (MemoryStream ms = new MemoryStream())
 			{
 				image.Save(ms, image.RawFormat);
-				return ms.ToArray();
+				data = ms.ToArray();
 			}
+
+			return data;
 		}
 
-		public static Bitmap ByteToImage(byte[] imgByteArray)
+		public static Bitmap BytesToImage(byte[] imgByteArray)
 		{
+			Bitmap bitmap;
 			using (MemoryStream ms = new MemoryStream(imgByteArray))
 			{
-				Bitmap img = Image.FromStream(ms) as Bitmap;
+				bitmap = Image.FromStream(ms) as Bitmap;
-				return img;
 			}
+
+			return bitmap;
 		}
 
 		public static void SaveImage(string fileName, Image img, ImageFormat format)
@@ -60,5 +109,59 @@ namespace PUtility
 				saveImage.Save(fileName, format);
 			}
 		}
+
+		public static byte[] FileToBytes(string filePath)
+		{
+			return File.ReadAllBytes(filePath);
+
+			//byte[] data;
+			//using (FileStream fs = new FileStream(filePath, FileMode.Open))
+			//{
+			//	data = new byte[fs.Length];
+			//	fs.Read(data, 0, data.Length);
+			//}
+
+			//return data;
+		}
+
+		public static void BytesToFile(string filePath, byte[] data)
+		{
+			File.WriteAllBytes(filePath, data);
+
+			//using (FileStream fs = new FileStream(filePath, FileMode.Create))
+			//{
+			//	fs.Write(data, 0, data.Length);
+			//}
+		}
+
+		public static string CheckFileDuplication(string dirPath, string fileName)
+		{
+			if (string.IsNullOrEmpty(dirPath) || string.IsNullOrEmpty(fileName))
+				return null;
+
+			string resultFileName = fileName;
+			int dotIdx = fileName.LastIndexOf(".");
+			string name = fileName.Substring(0, dotIdx);
+			string ext = fileName.Substring(dotIdx);
+
+			bool fileExist = true;
+			int fileCount = 0;
+			string dirMapPath = "";
+			while (fileExist)
+			{
+				dirMapPath = dirPath;
+				string combinedPath = Path.Combine(dirMapPath, resultFileName);
+				if (!File.Exists(combinedPath))
+				{
+					fileExist = false;
+					break;
+				}
+
+				fileCount++;
+				resultFileName = $"{name}({fileCount}){ext}";
+			}
+
+			return resultFileName;
+		}
 	}
 }

SocketStudy/PUtil/PUtility.csproj

@@ -7,8 +7,8 @@
     <ProjectGuid>{B6E7F933-EB73-4D83-94FA-FB17774F1D52}</ProjectGuid>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
-    <RootNamespace>PUtil</RootNamespace>
+    <RootNamespace>PUtility</RootNamespace>
-    <AssemblyName>PUtil</AssemblyName>
+    <AssemblyName>PUtility</AssemblyName>
     <TargetFrameworkVersion>v4.8.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
@@ -30,6 +30,24 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -43,6 +61,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="PFileManager.cs" />
     <Compile Include="PUtil.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>

SocketStudy/Server/Server_Single.csproj

@@ -32,6 +32,26 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />

SocketStudy/ServerForm/DataManager.cs

@@ -32,23 +32,26 @@ namespace ServerForm
 					log = Encoding.UTF8.GetString(data, 0, data.Length);
 					logHandler(clientInfo.Client, log);
 					break;
-				case PDataType.Person:
+				case PDataType.PersonObject:
 					Person person = PSerializer.Deserialize<Person>(data);
 					log = $"Name: {person.Name}, Age: {person.Age}";
 					logHandler(clientInfo.Client, log);
 					break;
-				case PDataType.Image:
+				case PDataType.ShowImage:
-					Image image = PUtil.ByteToImage(data);
+					Image image = PUtil.BytesToImage(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);
+					break;
+				case PDataType.SaveFile:
+					PFileData fileData = PSerializer.Deserialize<PFileData>(data);
+					PFileManager.Instance.SaveFile(fileData.Data, fileData.FileName);
 
-					GC.Collect();
+					log = $"Receive {data.Length.ToString("#,###")}bytes file and save it";
+					logHandler(clientInfo.Client, log);
 					break;
 				default:
 					logHandler(clientInfo.Client, "ERROR!!! UNEXPECTED DATA TYPE!!!");

SocketStudy/ServerForm/ServerForm.csproj

@@ -32,6 +32,26 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />

SocketStudy/ServerForm/mainForm.cs

@@ -19,8 +19,8 @@ namespace ServerForm
 
 	public partial class MainForm : Form
 	{
-		private readonly int PORT = 7777;
+		private readonly int PORT = 37777;
-		private readonly int HB_PORT = 7778;
+		private readonly int HB_PORT = 37778;
 
 		private PServer mainServer;
 		private PServer heartBeatServer;
@@ -29,6 +29,7 @@ namespace ServerForm
 		private FormHandler formHandler;
 
 		private System.Timers.Timer clientCheckTimer;
+		private System.Timers.Timer GarbageTimer;
 
 		public MainForm()
 		{
@@ -38,6 +39,8 @@ namespace ServerForm
 
 		private void InitInstance()
 		{
+			string path = Application.StartupPath;
+
 			heartBeatServer = new PServer(HB_PORT);
 			mainServer = new PServer(PORT);
 
@@ -54,6 +57,11 @@ namespace ServerForm
 			clientCheckTimer.Interval = 1000;
 			clientCheckTimer.Elapsed += ClientCheckTimer_Elapsed;
 			clientCheckTimer.Start();
+
+			GarbageTimer = new System.Timers.Timer();
+			GarbageTimer.Interval = 1000 * 10;
+			GarbageTimer.Elapsed += GarbageTimer_Elapsed;
+			GarbageTimer.Start();
 		}
 
 		private void WriteLog(PClient client, string log)
@@ -129,5 +137,10 @@ namespace ServerForm
 
 			CheckClientInfo(clientInfoList);
 		}
+
+		private void GarbageTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
+		{
+			GC.Collect();
+		}
 	}
 }

SocketStudy/Server_Async/Server_Async.csproj

@@ -32,6 +32,26 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />

SocketStudy/Server_Listener/Server_Client_Listener.csproj

@@ -32,6 +32,26 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <LangVersion>7.3</LangVersion>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />

SocketStudy/SocketStudy.sln

@@ -24,45 +24,83 @@ EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
 		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
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+		{5263D61C-F3A5-4EDA-AC6D-5F721CDBD2AF}.Debug|x64.ActiveCfg = Debug|x64
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 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE