C# socket通讯示例

以下是一个简单的 C# socket 通讯示例，其中包括了客户端和服务端的代码：

服务端代码：

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Server
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建一个监听的 socket
            Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            // 绑定 IP 地址和端口号
            IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 12345);
            listener.Bind(localEndPoint);

            // 开始监听
            listener.Listen(10);

            Console.WriteLine("等待客户端连接...");

            while (true)
            {
                // 接受客户端连接
                Socket clientSocket = listener.Accept();

                Console.WriteLine("客户端已连接");

                // 接收客户端发送的数据
                byte[] buffer = new byte[1024];
                int count = clientSocket.Receive(buffer);
                string message = Encoding.UTF8.GetString(buffer, 0, count);

                Console.WriteLine("接收到客户端的消息：" + message);

                // 发送数据给客户端
                string responseMessage = "Hello, Client!";
                byte[] responseBuffer = Encoding.UTF8.GetBytes(responseMessage);
                clientSocket.Send(responseBuffer);

                // 关闭连接
                clientSocket.Shutdown(SocketShutdown.Both);
                clientSocket.Close();
            }
        }
    }
}

客户端代码：

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Client
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建一个 socket
            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            // 连接服务器
            IPEndPoint remoteEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 12345);
            clientSocket.Connect(remoteEndPoint);

            Console.WriteLine("已连接到服务器");

            // 发送数据给服务器
            string message = "Hello, Server!";
            byte[] buffer = Encoding.UTF8.GetBytes(message);
            clientSocket.Send(buffer);

            // 接收服务器发送的数据
            byte[] responseBuffer = new byte[1024];
            int count = clientSocket.Receive(responseBuffer);
            string responseMessage = Encoding.UTF8.GetString(responseBuffer, 0, count);

            Console.WriteLine("接收到服务器的消息：" + responseMessage);

            // 关闭连接
            clientSocket.Shutdown(SocketShutdown.Both);
            clientSocket.Close();
        }
    }
}