C#下socket编程:udp协议测试

本文博客链接:http://blog.csdn.net/jdh99,作者:jdh,转载请注明.

软件平台:C# + WINCE6.0

硬件平台:tiny6410

界面设计:

设计思路:

1.点击发送键则发送文本

2.开辟一个线程接收网络数据

注意:

开辟的线程调用主线程的控件会导致不安全,所以用了托管的方式调用

源代码:

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Net;using System.Net.Sockets;using System.Threading;namespace test_udp{    public partial class Form1 : Form    {        UdpClient udpclient;        Byte[] sendBytes;        IPEndPoint temp;        public Form1()        {            InitializeComponent();        }        //发送按键        private void button1_Click(object sender, EventArgs e)        {            //定义一个字节数组,用来存放发送到远程主机的信息            sendBytes = Encoding.Default.GetBytes(textBox3.Text);            //调用send方法发送到远程主机            udpclient.Send(sendBytes, sendBytes.Length);        }        //确认配置        private void button2_Click(object sender, EventArgs e)        {            //实例化udpclient对象            udpclient = new UdpClient(Convert.ToInt32(textBox2.Text));            //调用connect建立默认远程主机            udpclient.Connect(textBox1.Text, Convert.ToInt32(textBox2.Text));            //实例化ipendpoint对象,用来显示响应主机的标识            temp = new IPEndPoint(IPAddress.Any,0);            //开启接收线程            Thread recv_udp = new Thread(new ThreadStart(recv_udp_func));            recv_udp.Start();        }        //接收线程        public void recv_udp_func()        {            while (true)            {                //接收数据包                Byte[] recv_bytes = udpclient.Receive(ref temp);                //将得到的数据包转换为字符串形式                string return_data = Encoding.Default.GetString(recv_bytes,0,recv_bytes.Length);                //显示                this.Invoke((EventHandler)delegate { this.textBox4.Text = return_data; });            }        }    }}