Tcp和UDP的实现

 using System;
using System.Collections.Generic;
using System.Linq;
using  System.Net 

;
using  System.Net 

.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace _023_socket编程_UDP协议_服务器端
{
    class Program
    {
        private static Socket udpServer;
        static void Main(string[] args)
        {
            //1,创建socket
            udpServer = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            //2,绑定ip跟端口号
            udpServer.Bind(new IPEndPoint(IPAddress.Parse(" 192.168.23.1 

"), 8888));

            //3，接收数据
            new Thread(ReceiveMessage) { IsBackground = true }.Start();

            //udpServer.Close();
            Console.ReadKey();
        }

        static void ReceiveMessage()
        {
            while (true)
            {
                EndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
                byte[] data = new byte[1024];
                int length = udpServer.ReceiveFrom(data, ref remoteEndPoint);//这个方法会把数据的来源(ip:port)放到第二个参数上
                string message = Encoding.UTF8.GetString(data, 0, length);
                Console.WriteLine("从ip：" + (remoteEndPoint as IPEndPoint).Address.ToString() + "：" + (remoteEndPoint as IPEndPoint).Port + "收到了数据：" + message);
            }

        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using  System.Net 

;
using  System.Net 

.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace _025_udpclient
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建udpclient 绑定ip跟端口号
            Socket udpClient = new Socket(AddressFamily.InterNetwork,SocketType.Dgram,ProtocolType.Udp);


            while (true)
            {
                EndPoint serverPoint = new IPEndPoint(IPAddress.Parse(" 192.168.23.1 

"),8888);
                string message = Console.ReadLine();
                byte[] data = Encoding.UTF8.GetBytes(message);
                udpClient.SendTo(data,serverPoint);
            }


            udpClient.Close();
            Console.ReadKey();
        }
    }
}