C# 网络编程之Tcp实现客户端和服务器聊天

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

//添加新的命名空间
using System.Net;
using System.Net.Sockets;     
using System.IO;              //流StreamReader

namespace TCPServer
{
    class Program
    {
        static void Main(string[] args)
        {
            //Parse将字符串转换为IP地址类型
            IPAddress myIP = IPAddress.Parse("127.0.0.1");
            //构造一个TcpListener(IP地址,端口)对象,TCP服务端
            TcpListener myServer = new TcpListener(myIP,6688);
           
            //开始监听
            myServer.Start();
            Console.WriteLine("等候一个连接...");

            //构造TCP客户端:接受连接请求
            TcpClient client = myServer.AcceptTcpClient();
            Console.WriteLine("客户端已经连接...");

            //构造NetworkStream类,该类用于获取和操作网络流
            NetworkStream stream = client.GetStream();
            //读数据流对象
            StreamReader sr = new StreamReader(stream);
            //写数据流对象
            StreamWriter sw = new StreamWriter(stream);

            while (true)
            {
                Console.WriteLine("客户端:" + sr.ReadLine());
                string msg = Console.ReadLine();
                sw.WriteLine(msg);
                sw.Flush();               //刷新流
            }
            client.Close();               //关闭客户端
        }
    }
}

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

//添加新的命名空间
using System.Net;
using System.Net.Sockets;
using System.IO;              //流StreamReader

namespace TCPClient
{
    class Program
    {
        static void Main(string[] args)
        {
            //Parse将字符串转换为IP地址类型
            IPAddress myIP = IPAddress.Parse("127.0.0.1");
            //构造一个TcpClient类对象,TCP客户端
            TcpClient client = new TcpClient();
            //与TCP服务器连接
            client.Connect(myIP, 6688);
            Console.WriteLine("服务器已经连接...请输入对话内容...");

            //创建网络流,获取数据流
            NetworkStream stream = client.GetStream();
            //读数据流对象
            StreamReader sr = new StreamReader(stream);
            //写数据流对象
            StreamWriter sw = new StreamWriter(stream);

            while (true)
            {
                string msg = Console.ReadLine();
                sw.WriteLine(msg);
                sw.Flush();             //刷新流
                Console.WriteLine("服务器:" + sr.ReadLine());
            }
            client.Close();
            Console.Read();
        }
    }
}