socket編程一

准備弄個.net的Socket系列，先弄個簡單的

客戶端代碼

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;
            //提供網際協議的ip地址
            IPAddress HostIP = IPAddress.Parse("127.0.0.1");
            //將網絡端點表示為ip地址和端口號
            IPEndPoint point;
            try
            {
                point = new IPEndPoint(HostIP, Int32.Parse("1571"));
                //AddressFamily指定Socket的尋址方式
                //指定Socket的協議類型ProtocolType.Tcp
                socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);      
                socket.Connect(point);
                //向服務器發送數據
                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);
            }
        }
    }
}

服務器端的代碼

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();
        }
        //聲明委托
        delegate void SetTextCallback(string text);
        private void SetText(string text)
        {
            textBox1.AppendText(text + "\r\n");
        }
        //提供網際協議(IP)地址IPAddress
        IPAddress HostIP = IPAddress.Parse("127.0.0.1");
        //將網絡端點表示為IP地址和端口號
        IPEndPoint point;
        //定義兩個套接字
        Socket socket;
        Socket acceptedSocket;
        //開啟接受套接字的服務
        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);
            }
        }
        //要專門用一個線程來accept 一個線程來receive數據
        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);
                //在擁有控件的基礎窗口句柄的線程上，用指定的參數列表執行指定的委托
                this.Invoke(new SetTextCallback(SetText), new object[] { strInfo });
            }
            else
            {
                this.textBox1.Text = "還沒有信息";
            }
        }
    }
}