socket编程一

准备弄个.net的Socket系列，先弄个简单的

客户端代码

 

using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class net_client : Form
    {
        public net_client()
        {
            InitializeComponent();
        }
        private void btn_send_Click(object sender, EventArgs e)
        {
            Socket socket;
            //提供网际协议的ip地址
            IPAddress HostIP = IPAddress.Parse("127.0.0.1");
            //将网络端点表示为ip地址和端口号
            IPEndPoint point;
            try
            {
                point = new IPEndPoint(HostIP, Int32.Parse("1571"));
                //AddressFamily指定Socket的寻址方式
                //指定Socket的协议类型ProtocolType.Tcp
                socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);      
                socket.Connect(point);
                //向服务器发送数据
                byte[] sendByte = new byte[64];
                string sendStr = this.textBox1.Text + "\r\n";
                sendByte = Encoding.BigEndianUnicode.GetBytes(sendStr.ToCharArray());
                socket.Send(sendByte, sendByte.Length, 0);
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }
}

 

服务器端的代码

 

using System;
using System.Text;
using System.Net;
using System.Threading;
using System.Diagnostics;
using System.Net.Sockets;

namespace WindowsApplication1
{
    public partial class net_server : Form
    {
        public net_server()
        {
            InitializeComponent();
        }
        //声明委托
        delegate void SetTextCallback(string text);
        private void SetText(string text)
        {
            textBox1.AppendText(text + "\r\n");
        }
        //提供网际协议(IP)地址IPAddress
        IPAddress HostIP = IPAddress.Parse("127.0.0.1");
        //将网络端点表示为IP地址和端口号
        IPEndPoint point;
        //定义两个套接字
        Socket socket;
        Socket acceptedSocket;
        //开启接受套接字的服务
        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                point = new IPEndPoint(HostIP, Int32.Parse("1571"));
                socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                socket.Bind(point);
                socket.Listen(50);
                //acceptedSocket = socket.Accept();
                Thread thread = new Thread(new ThreadStart(Process));
                thread.Start();
            }
            catch (Exception ey)
            {
                MessageBox.Show(ey.Message);
            }
        }
        //要专门用一个线程来accept 一个线程来receive数据
        private void Process()
        {
            acceptedSocket = socket.Accept();
            if (acceptedSocket.Connected)
            {
                byte[] receiveByte = new byte[64];
                acceptedSocket.Receive(receiveByte, receiveByte.Length, 0);
                string strInfo = Encoding.BigEndianUnicode.GetString(receiveByte);
                //在拥有控件的基础窗口句柄的线程上，用指定的参数列表执行指定的委托
                this.Invoke(new SetTextCallback(SetText), new object[] { strInfo });
            }
            else
            {
                this.textBox1.Text = "还没有信息";
            }
        }
      
    }
}