Socket建立服务器程序

服务器端程序

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
using System.IO;
using System.Net.Sockets;
using System.Net;
namespace server
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                //第一步：打开监听端口
                IPAddress ip = IPAddress.Parse("127.0.0.1");
                TcpListener tcpListener = new TcpListener(ip, 8001);
                tcpListener.Start();
                Console.WriteLine("开启端口服务....");
                Console.WriteLine("本地节点：" + tcpListener.LocalEndpoint);
                Console.WriteLine("等待连接.....");
                bool loop=true;
                Socket s = null;
                //第二步：接受连接
                while (loop)
                {
                    s = tcpListener.AcceptSocket();
                    Console.WriteLine("连接来自：" + s.RemoteEndPoint);
 
                    //第三步：接收客户端信息
                    byte[] b = new byte[100];
                    int k = s.Receive(b);
                    Console.WriteLine("已接收");
                    for (int i = 0; i < k; i++)
                    {
                        Console.Write(Convert.ToChar(b[i]));
                    }
 
                    //第四步：回应客户端
                    ASCIIEncoding a = new ASCIIEncoding();
                    s.Send(a.GetBytes("The string was recieved by the server"));
 
                    //第五步：释放资源，断开连接
                    
                    
                    
                }
               s.Close();
               tcpListener.Stop();
               Console.ReadLine();
            }
            catch (Exception ee)
            {
                Console.WriteLine("Error:{0}", ee.Message);
                Console.ReadLine();
            }
        }
    }
}
客户端程序

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
using System.IO;
using System.Net;
using System.Net.Sockets;
 
namespace client
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                //第一步：新建客户端
                TcpClient client = new TcpClient();
                Console.WriteLine("连接...");
 
                //第二步：连接服务器
                client.Connect("127.0.0.1", 8001);
                Console.WriteLine("已连接!");
                
                Console.WriteLine("请输入要传送的字符串：");
                //第三步：获得客户端流
                string s = Console.ReadLine();
                Stream stream = client.GetStream();
                //第四步：发送信息
                ASCIIEncoding ascii = new ASCIIEncoding();
                byte[] ba = ascii.GetBytes(s);
                Console.WriteLine("传输中....");
                stream.Write(ba, 0, ba.Length);
                //第五步：接收服务器返回信息
                byte[] bb = new byte[100];
                string res = "";
                int k = stream.Read(bb, 0, 100);
 
                for (int i = 0; i < k; i++)
                {
                    res += Convert.ToChar(bb[i]);
 
                }
                Console.WriteLine(res);
                
                //第六步：关闭客户端连接
                client.Close();
                Console.ReadLine();
                
                
            }
            catch(Exception ee)
            {
                Console.WriteLine("Error:{0}", ee.Message);
            }
            
        }
        
    }
}
编译后先启动服务器程序，再启动客户端程序