base chat module

Chat/Chat.sln

@@ -0,0 +1,37 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32929.385
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Server", "Server\Server.csproj", "{44FE944D-8D60-4A9C-B739-32F53A033880}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Core", "Core\Core.csproj", "{0BF351F8-CA96-446D-83DE-00CAE7B4CC5D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestConsoleClient", "TestConsoleClient\TestConsoleClient.csproj", "{E8D23703-2D2E-43C2-9B77-16EA04CD7331}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{44FE944D-8D60-4A9C-B739-32F53A033880}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{44FE944D-8D60-4A9C-B739-32F53A033880}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{44FE944D-8D60-4A9C-B739-32F53A033880}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{44FE944D-8D60-4A9C-B739-32F53A033880}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0BF351F8-CA96-446D-83DE-00CAE7B4CC5D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0BF351F8-CA96-446D-83DE-00CAE7B4CC5D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0BF351F8-CA96-446D-83DE-00CAE7B4CC5D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0BF351F8-CA96-446D-83DE-00CAE7B4CC5D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E8D23703-2D2E-43C2-9B77-16EA04CD7331}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E8D23703-2D2E-43C2-9B77-16EA04CD7331}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E8D23703-2D2E-43C2-9B77-16EA04CD7331}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E8D23703-2D2E-43C2-9B77-16EA04CD7331}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {812F7F1E-3CAD-4992-A7E2-D53C6FB1D1AA}
+	EndGlobalSection
+EndGlobal

Chat/Chat/Chat.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Chat/Chat/Program.cs

@@ -0,0 +1,10 @@
+namespace Chat
+{
+	internal class Program
+	{
+		static void Main(string[] args)
+		{
+			Console.WriteLine("Hello, World!");
+		}
+	}
+}

Chat/Core/Core.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Chat/Core/PClient.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Core
+{
+	public class PClient
+	{
+		private Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+		private EndPoint endPoint;
+
+		public PClient(string ip, int port)
+		{
+			endPoint = new IPEndPoint(IPAddress.Parse(ip), port);
+		}
+
+		public async Task StartAsync()
+		{
+			await socket.ConnectAsync(endPoint);
+			while (true)
+			{
+				string str = Console.ReadLine() ?? string.Empty;
+				byte[] dataBuffer = Encoding.UTF8.GetBytes(str);
+				byte[] headerBuffer = BitConverter.GetBytes(IPAddress.HostToNetworkOrder((short)dataBuffer.Length));
+
+				await socket.SendAsync(headerBuffer, SocketFlags.None);
+				await socket.SendAsync(dataBuffer, SocketFlags.None);
+			}
+		}
+	}
+}

Chat/Core/PServer.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Core
+{
+	public class PServer
+	{
+		private Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+
+		public PServer(string ip, int port, int backlog)
+		{
+			IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse(ip), port);
+			serverSocket.Bind(endPoint);
+			serverSocket.Listen(backlog);
+		}
+
+		public async Task StartAsync()
+		{
+			while (true)
+			{
+				Socket clientSocket = await serverSocket.AcceptAsync();
+				Console.WriteLine($"[{DateTime.Now}] Accept client: {clientSocket.RemoteEndPoint}");
+				ThreadPool.QueueUserWorkItem(RunAsync, clientSocket);
+			}
+		}
+
+		private async void RunAsync(object? sender)
+		{
+			if (sender == null)
+				return;
+
+			Socket clientSocket = (Socket)sender;
+			byte[] headerBuffer = new byte[2];
+
+			while (true)
+			{
+				// header buffer
+				int n1 = await clientSocket.ReceiveAsync(headerBuffer, SocketFlags.None);
+				if (n1 < 1)
+				{
+					Console.WriteLine($"[{DateTime.Now}] Disconnect client: {clientSocket.RemoteEndPoint}");
+					clientSocket.Dispose();
+					return;
+				}
+				else if (n1 == 1)
+				{
+					await clientSocket.ReceiveAsync(new ArraySegment<byte>(headerBuffer, 1, 1), SocketFlags.None);
+				}
+
+				// data buffer
+				short dataSize = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(headerBuffer));
+				byte[] dataBuffer = new byte[dataSize];
+
+				int totalRecv = 0;
+				while (totalRecv < dataSize)
+				{
+					int n2 = await clientSocket.ReceiveAsync(new ArraySegment<byte>(dataBuffer, totalRecv, dataSize - totalRecv), SocketFlags.None);
+					totalRecv += n2;
+				}
+				Console.WriteLine($"[{DateTime.Now}] {clientSocket.RemoteEndPoint} client: {Encoding.UTF8.GetString(dataBuffer)}");
+			}
+		}
+	}
+}

Chat/Server/Program.cs

@@ -0,0 +1,12 @@
+using Core;
+
+namespace Server;
+
+internal class Program
+{
+	static async Task Main(string[] args)
+	{
+		PServer server = new PServer("127.0.0.1", 20000, 1000);
+		await server.StartAsync();
+	}
+}

Chat/Server/Server.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Core\Core.csproj" />
+  </ItemGroup>
+
+</Project>

Chat/TestConsoleClient/Program.cs

@@ -0,0 +1,13 @@
+using Core;
+
+namespace TestConsoleClient
+{
+	internal class Program
+	{
+		static async Task Main(string[] args)
+		{
+			PClient client = new PClient("127.0.0.1", 20000);
+			await client.StartAsync();
+		}
+	}
+}

Chat/TestConsoleClient/TestConsoleClient.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Core\Core.csproj" />
+  </ItemGroup>
+
+</Project>