Socket编程

最近突然感觉Socket编程很重要，所以自己写了一个简单的小程序
using System;
using System.Collections.Generic;
using System.Text;

using System.Net;
using System.Net.Sockets;

namespace Client
{
    class CClient
    {
        public string ReturnStr = "";

        public void BeginSend()
        {

            //string ip = "192.168.110.1";

            string port = "8080";
            //获取服务器的ip
            IPAddress serverIp = GetServerIP();
            //取出端口
            int serverPort = Convert.ToInt32(port);
            //连接指定ip和端口号得机子
            IPEndPoint iep = new IPEndPoint(serverIp, serverPort);
            //定义一个自己的信息
            byte[] byteMessage;
            //其中AddressFamily.InterNetwork参数指定 Socket 使用的寻址方案，
            //SocketType.Stream参数指定 Socket 的类型，
            //ProtocolType.Tcp 参数指定 Socket 使用的协议。
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            //连接服务器
            socket.Connect(iep);
            //定义一个信息流
            byteMessage = Encoding.Default.GetBytes("你好吗？我是您的朋友");
            //发送信息
            socket.Send(byteMessage);
            //接收数据
            int rec = socket.Receive(byteMessage);
            if (rec >0)
            {
                //获取现在的时间
                string sTime = DateTime.Now.ToShortTimeString();

                string msg = sTime + ":" + "Message from:";
                //获取信息
                msg += socket.RemoteEndPoint.ToString() + Encoding.Default.GetString(byteMessage);
                ReturnStr = msg;
            }
            //关闭网络连接
            socket.Shutdown(SocketShutdown.Both);
            socket.Close();

        }
        /// <summary>
        /// 获取IP
        /// </summary>
        /// <returns></returns>
        public static IPAddress GetServerIP()
        {
            IPHostEntry ieh = Dns.GetHostByName(Dns.GetHostName());
            return ieh.AddressList[0];
        }



    }
}