用VS搭建一个聊天室源码

下面是使用 Visual Studio 和 C# 搭建一个简单聊天室的源码示例：

Server 端代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace Server
{
    class Program
    {
        static List<Socket> clients = new List<Socket>();
        static void Main(string[] args)
        {
            // 设置服务器 IP 地址和端口号
            string ip = "127.0.0.1";
            int port = 8000;

            // 创建服务器 socket 对象
            Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            // 绑定 IP 地址和端口号
            serverSocket.Bind(new IPEndPoint(IPAddress.Parse(ip), port));

            // 设置最大连接数
            serverSocket.Listen(10);

            Console.WriteLine("Server started, waiting for clients ...");

            while (true)
            {
                Socket clientSocket = serverSocket.Accept();

                Console.WriteLine("Client {0} connected", clientSocket.RemoteEndPoint.ToString());

                clients.Add(clientSocket);

                // 创建新线程处理客户端请求
                Task.Factory.StartNew(() =>
                {
                    byte[] buffer = new byte[1024];

                    while (true)
                    {
                        try
                        {
                            // 接收客户端消息
                            int receiveLength = clientSocket.Receive(buffer);
                            string message = Encoding.UTF8.GetString(buffer, 0, receiveLength);

                            Console.WriteLine("Client {0} sent message: {1}", clientSocket.RemoteEndPoint.ToString(), message);

                            // 广播消息给所有客户端
                            foreach (Socket client in clients)
                            {
                                if (client == clientSocket) continue;

                                client.Send(Encoding.UTF8.GetBytes(message));
                            }
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine("Client {0} disconnected: {1}", clientSocket.RemoteEndPoint.ToString(), ex.Message);
                            clients.Remove(clientSocket);
                            clientSocket.Close();
                            break;
                        }
                    }
                });
            }
        }
    }
}

Client 端代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace Client
{
    class Program
    {
        static void Main(string[] args)
        {
            // 设置服务器 IP 地址和端口号
            string ip = "127.0.0.1";
            int port = 8000;

            // 创建客户端 socket 对象
            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            // 连接服务器
            clientSocket.Connect(new IPEndPoint(IPAddress.Parse(ip), port));

            Console.WriteLine("Connected to server");

            // 创建新线程接收服务器消息
            Task.Factory.StartNew(() =>
            {
                byte[] buffer = new byte[1024];

                while (true)
                {
                    try
                    {
                        // 接收服务器消息
                        int receiveLength = clientSocket.Receive(buffer);
                        string message = Encoding.UTF8.GetString(buffer, 0, receiveLength);

                        Console.WriteLine("Received message from server: {0}", message);
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine("Server disconnected: {0}", ex.Message);
                        clientSocket.Close();
                        break;
                    }
                }
            });

            // 发送消息
            while (true)
            {
                string input = Console.ReadLine();
                clientSocket.Send(Encoding.UTF8.GetBytes(input));
            }
        }
    }
}

这个程序使用 C# 的 Socket 类创建了一个服务器和一个客户端，可以在本地运行。当客户端发送消息时，服务器会将该消息广播给所有连接到服务器的客户端。程序使用多线程处理客户端请求，可以同时处理多个客户端连接。