C#winform UDP通信 发送和接收信息

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Net;using System.Net.Sockets;using System.Text;using System.Threading;using System.Threading.Tasks;using System.Windows.Forms;namespace UDP测试_客户端{    public partial class ClientForm2 : Form    {        public ClientForm2()        {            InitializeComponent();        }        static Socket client;        Thread t;        Thread t2;        string recv;        private void btnSend_Click(object sender, EventArgs e)        {            EndPoint point = new IPEndPoint(IPAddress.Parse("192.168.48.1"), 6001);            string msg = txtSend.Text;            client.SendTo(Encoding.UTF8.GetBytes(msg), point);        }        private void timer1_Tick(object sender, EventArgs e)        {            txtReciv.Text = recv ;        }        private void ClientForm2_Load(object sender, EventArgs e)        {            client = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);            client.Bind(new IPEndPoint(IPAddress.Parse(txtIP.Text), int.Parse(txtPort.Text)));            t = new Thread(sendMsg);            //t.Start();            t2 = new Thread(ReciveMsg);            t2.Start();            timer1.Start();        }        /// <summary>        /// 向特定ip的主机的端口发送数据报        /// </summary>        void sendMsg()        {            EndPoint point = new IPEndPoint(IPAddress.Parse("192.168.48.1"), 6001);            while (true)            {                string msg = txtSend.Text;                client.SendTo(Encoding.Default.GetBytes(msg), point);            }        }        /// <summary>        /// 接收发送给本机ip对应端口号的数据报        /// </summary>        void ReciveMsg()        {            while (true)            {                EndPoint point = new IPEndPoint(IPAddress.Any, 0);//用来保存发送方的ip和端口号                byte[] buffer = new byte[1024];                int length = client.ReceiveFrom(buffer, ref point);//接收数据报                recv += Encoding.UTF8.GetString(buffer, 0, length);                recv += "\r\n";                //txtReciv.Text += recv;            }        }        private void ClientForm2_FormClosing(object sender, FormClosingEventArgs e)        {            timer1.Stop();            t.Abort();            t2.Abort();        }    }}

         UDP通信不需要建立连接。