C#UDP实现停等协议

一个很垃圾的程序，不过对于一些刚入门的人来说的确是一个很好的参考

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.Sockets;
using System.Net;
using System.Threading;
namespace netHomework
{
    public partial class Form1 : Form
    {
        private UdpClient receive;
        private UdpClient udpClient;
        private int remotPort = 1000;
        private int localPort =1001;
        private Thread t;


        public Form1（）
        {
            InitializeComponent（）;
            receive = new UdpClient（localPort）;
            udpClient = new UdpClient（）;
        }

        private void sendButton_Click（object sender EventArgs e）
        {
            if （this.remotIPTextBox.Text.Equals（““））
            {
                MessageBox.Show（“应用了默认的127.0.0.1“）;
            }
            udpClient.Send（Encoding.Unicode.GetBytes（this.contendTextBox.Text） Encoding.Unicode.GetByteCount（this.contendTextBox.Text）this.remotIPTextBox.Textthis.remotPort）;
            this.sendButton.Enabled = false;

        }

        private void Form1_Load（object sender EventArgs e）
        {
            t = new Thread（new ThreadStart（receiveMethod））;
            t.Start（）;

        }
        public void receiveMethod（）
        {
            while （true）
            {
                IPEndPoint receivePoint = new IPEndPoint（IPAddress.Parse（“127.0.0.1“） 1）;
                byte[] contendByte = receive.Receive（ref receivePoint）;
                string contendLine = Encoding.Unicode.GetString（contendByte）;
                this.informationTextBox.Text = contendLine;
                if （contendLine.Equals（“ack“））
                {
                    this.sendButton.Enabled = true;
                }
                else if （contendLine.Equals（“nak“））
                {
                    MessageBox.Show（“对方要求重发！“）;
                    udpClient.Send（Encoding.Unicode.GetBytes（this.contendTextBox.Text） Encoding.Unicode.GetByteCount（this.contendTextBox.Text） this.remotIPTextBox.Text remotPort）;
                }
                else if （contendLine.Equals（“none“））
                {
                    MessageBox.Show（“丢包咯！“）;
                    this.sendButton.Enabled = true;
                }
                else if （contendLine.Equals（“outTime“））
                {
                    MessageBox.Show（“超时了不好意识！“）;
                    this.sendButton.Enabled = true;
                }
            }
        }
        private void resetButton_Click（object sender EventArgs e）
        {
            this.remotIPTextBox.Text = ““;
            this.contendTextBox.Text = ““;
        }

        private void contendTextBox_TextChanged（object sender EventArgs e）
        {

        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件      20480  2009-04-11 15:09  receive\receive\bin\Debug\receive.exe

     文件      32256  2009-04-11 15:09  receive\receive\bin\Debug\receive.pdb

     文件       5632  2005-12-08 14:51  receive\receive\bin\Debug\receive.vshost.exe

     文件       2403  2009-04-11 15:09  receive\receive\Form1.cs

     文件       5612  2009-04-11 15:09  receive\receive\Form1.Designer.cs

     文件       5814  2009-04-09 16:53  receive\receive\Form1.resx

     文件        842  2009-04-09 16:53  receive\receive\obj\Debug\receive.csproj.GenerateResource.Cache

     文件      20480  2009-04-11 15:09  receive\receive\obj\Debug\receive.exe

     文件        180  2009-04-09 16:53  receive\receive\obj\Debug\receive.Form1.resources

     文件      32256  2009-04-11 15:09  receive\receive\obj\Debug\receive.pdb

     文件        180  2009-04-09 16:12  receive\receive\obj\Debug\receive.Properties.Resources.resources

     文件        268  2009-04-09 17:46  receive\receive\obj\receive.csproj.FileList.txt

     文件        636  2009-04-11 15:13  receive\receive\obj\receive.csproj.FileListAbsolute.txt

     文件        466  2009-04-09 15:59  receive\receive\Program.cs

     文件       1228  2009-04-09 15:59  receive\receive\Properties\AssemblyInfo.cs

     文件       2868  2009-04-09 15:59  receive\receive\Properties\Resources.Designer.cs

     文件       5612  2009-04-09 15:59  receive\receive\Properties\Resources.resx

     文件       1090  2009-04-09 15:59  receive\receive\Properties\Settings.Designer.cs

     文件        249  2009-04-09 15:59  receive\receive\Properties\Settings.settings

     文件       3221  2009-04-09 17:02  receive\receive\receive.csproj

     文件        910  2009-04-09 15:59  receive\receive.sln

    ..A..H.     15872  2009-04-11 15:15  receive\receive.suo

     文件      20480  2009-04-11 15:14  netHomework\netHomework\bin\Debug\netHomework.exe

     文件      26112  2009-04-11 15:14  netHomework\netHomework\bin\Debug\netHomework.pdb

     文件       5632  2005-12-08 14:51  netHomework\netHomework\bin\Debug\netHomework.vshost.exe

     文件       2911  2009-04-11 15:14  netHomework\netHomework\Form1.cs

     文件       5340  2009-04-11 15:14  netHomework\netHomework\Form1.Designer.cs

     文件       5814  2009-04-09 16:39  netHomework\netHomework\Form1.resx

     文件       3229  2009-04-09 16:10  netHomework\netHomework\netHomework.csproj

     文件        842  2009-04-09 16:41  netHomework\netHomework\obj\Debug\netHomework.csproj.GenerateResource.Cache

............此处省略34个文件信息