线程的应用udpClient通信_udp client的remoteep-优快云博客

本文介绍了一个使用C#实现的简单UDP客户端和服务端通信的例子。通过创建两个线程分别用于发送和接收数据，演示了如何在本地计算机上进行UDP数据包的收发。此例涉及线程启动、数据编码及端口监听等关键技术点。

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 UDP
{
    class Program
    {
        private static UdpClient udpSender;

        private static UdpClient udpRecver;

        static void Main(string[] args)
        {
            //BeginListen();
            IPEndPoint localIpEP = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 12345); //本机ip,发送的ip地址

            udpSender = new UdpClient(localIpEP);

            Thread thrSend = new Thread(SendMessage); 发送的线程

            thrSend.Start("hello,this is server");

            BeginListen();     开启接收线程

            Console.WriteLine("server started");

            Console.Read();
        }
        private static void BeginListen()
        {
            IPEndPoint localIpep = new IPEndPoint(

           IPAddress.Parse("127.0.0.1"), 8849); // 本机IP和监听端口号 ********************这个监听端口是必须的(个人的理解)

            udpRecver = new UdpClient(localIpep);

            Thread thrReceive = new Thread(ReceiveMessage);

            thrReceive.Start();

            Console.WriteLine("client started");
        }
        private static void ReceiveMessage()
        {
            // throw new NotImplementedException();

            IPEndPoint remoteIpEP = new IPEndPoint(IPAddress.Any, 0);
            while (true)
            {
                // 从远处接收到的数据
                byte[] bytReceive = udpRecver.Receive(ref remoteIpEP);

                string msg = Encoding.Unicode.GetString(bytReceive, 0, bytReceive.Length);

                Console.WriteLine("received from server");
                Console.WriteLine(msg);
            }

        }

        private static void SendMessage(object obj)
        {
            //throw new NotImplementedException();

            // string msg = (string)obj;
            string msg ="this is send data";

            byte[] sendbytes = Encoding.Unicode.GetBytes(msg);
            //发送到的ip地址
            IPEndPoint remoteIpEP = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8849); 发送到的ip地址

            udpSender.Send(sendbytes, sendbytes.Length, remoteIpEP);

            udpSender.Close();


        }
    }
}