添加项目文件。

FunGameServer.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Folder Include="Models\Entity\" />
+    <Folder Include="Models\Config\" />
+  </ItemGroup>
+
+</Project>

FunGameServer.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32804.467
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FunGameServer", "FunGameServer.csproj", "{CFC4F490-967B-4F12-883E-86C2A6E61461}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CFC4F490-967B-4F12-883E-86C2A6E61461}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CFC4F490-967B-4F12-883E-86C2A6E61461}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CFC4F490-967B-4F12-883E-86C2A6E61461}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CFC4F490-967B-4F12-883E-86C2A6E61461}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B4235C3B-6B99-4B97-B7F1-B586B219B51E}
+	EndGlobalSection
+EndGlobal

Main.cs

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+using System.Net.Sockets;
+using System.Net;
+using System.Text;
+using System.Text.RegularExpressions;
+using System;
+using FunGameServer.Sockets;
+using System.Net.WebSockets;
+
+bool Running = true;
+Socket? ServerSocket = null;
+
+string host = "127.0.0.1";
+int port = 22222;
+
+try
+{
+    Task t = Task.Factory.StartNew(() =>
+    {
+        // 创建IP地址终结点对象
+        IPAddress ip = IPAddress.Parse(host);
+        IPEndPoint ipe = new IPEndPoint(ip, port);
+
+        // 创建TCP Socket对象并绑定终结点
+        ServerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+        ServerSocket.Bind(ipe);
+
+        // 开始监听连接
+        ServerSocket.Listen(0);
+        Console.WriteLine("服务器启动成功，正在监听 . . .");
+
+        while (Running)
+        {
+            Socket socket;
+            try
+            {
+                socket = ServerSocket.Accept();
+                IPEndPoint? clientIP = (IPEndPoint?)socket.RemoteEndPoint;
+                if (clientIP != null)
+                    Console.WriteLine("客户端" + clientIP.ToString() + "连接 . . .");
+                else
+                    Console.WriteLine("未知地点客户端连接 . . .");
+                Task.Factory.StartNew(() =>
+                {
+                    new ClientSocket(socket, Running).Start();
+                });
+                // 接收客户端消息
+                Receive(socket);
+                // 发送给客户端消息
+                Send(socket);
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine("ERROR: 客户端断开连接！\n" + e.StackTrace);
+            }
+        }
+        
+    });
+}
+catch (Exception e)
+{
+    Console.WriteLine(e.StackTrace);
+    if (ServerSocket != null)
+    {
+        ServerSocket.Close();
+        ServerSocket = null;
+    }
+}
+finally
+{
+    while (Running)
+    {
+        string? order = "";
+        order = Console.ReadLine();
+        if (order != null && !order.Equals(""))
+        {
+            switch (order)
+            {
+                case "quit":
+                    Running = false;
+                    break;
+            }
+        }
+    }
+}
+
+Console.WriteLine("服务器已关闭，按任意键退出程序。");
+Console.ReadKey();
+
+
+static void Receive(Socket socket)
+{
+    byte[] bytes = new byte[1024];
+    //从客户端接收消息
+    int len = socket.Receive(bytes, bytes.Length, 0);
+    //将消息转为字符串
+    string recvStr = Encoding.ASCII.GetString(bytes, 0, len);
+    Console.WriteLine("接收的客户端消息 ： {0}", recvStr);
+}
+
+void Send(Socket socket)
+{
+    string sendStr = ">> 服务器"  + host + ":" + port + "连接成功";
+    Console.WriteLine("发送给客户端消息 ： {0}", sendStr);
+    // 将字符串消息转为数组
+    byte[] bytes = Encoding.ASCII.GetBytes(sendStr);
+    //发送消息给客户端
+    socket.Send(bytes, bytes.Length, 0);
+}
+
+bool IsIP(string ip)
+{
+    //判断是否为IP
+    return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
+}
+
+bool IsEmail(string ip)
+{
+    //判断是否为Email
+    return Regex.IsMatch(ip, @"^(\w)+(\.\w)*@(\w)+((\.\w+)+)$");
+}

Sockets/ClientSocket.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FunGameServer.Sockets
+{
+    public class ClientSocket
+    {
+        public bool Running { get; set; } = false;
+        public Socket? Socket { get; set; } = null;
+
+        public ClientSocket(Socket socket, bool running)
+        {
+            Socket = socket;
+            Running = running;
+        }
+
+        public void Start()
+        {
+            Task StringStream = Task.Factory.StartNew(() =>
+            {
+                CreateStringStream();
+            });
+            Task IntStream = Task.Factory.StartNew(() =>
+            {
+                CreateStringStream();
+            });
+            Task DecimalStream = Task.Factory.StartNew(() =>
+            {
+                CreateDecimalStream();
+            });
+            Task ObjectStream = Task.Factory.StartNew(() =>
+            {
+                CreateObjectStream();
+            });
+        }
+
+        private void CreateStringStream()
+        {
+            Thread.Sleep(1000);
+            Console.WriteLine("Creating: StringStream...OK");
+            while (Running)
+            {
+
+            }
+        }
+
+        private void CreateIntStream()
+        {
+            Thread.Sleep(1000);
+            Console.WriteLine("Creating: IntStream...OK");
+            while (Running)
+            {
+
+            }
+        }
+        
+        private void CreateDecimalStream()
+        {
+            Thread.Sleep(1000);
+            Console.WriteLine("Creating: DecimalStream...OK");
+            while (Running)
+            {
+
+            }
+        }
+        
+        private void CreateObjectStream()
+        {
+            Thread.Sleep(1000);
+            Console.WriteLine("Creating: ObjectStream...OK");
+            while (Running)
+            {
+
+            }
+        }
+    }
+}