program.cs

里面包括很多网络的模拟 有一个网页下载工具 基于控制台

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Threading; 


namespace AsynGetHostByName
{
    class Program
    {    

        static void Main(string[] args)
        {
            AsyncCallback OnResolved;        
            object state = new Object();

            OnResolved = new AsyncCallback(Resolved);
            Dns.BeginGetHostByName(args[0], OnResolved, state);
            Console.ReadKey();
        }

        private static void Resolved(IAsyncResult ar)
        {
            IPHostEntry iphe = Dns.EndGetHostByName(ar);

            IPAddress[] address = iphe.AddressList;
            // Get the alias names of the addresses in the IP address list.
            String[] alias = iphe.Aliases;
            Console.WriteLine("Canonical host name : " + iphe.HostName);
            Console.WriteLine("\nAliases : ");
            for (int index = 0; index < alias.Length; index++)
            {
                Console.WriteLine(alias[index]);
            }
            Console.WriteLine("\nIP address list : ");
            for (int index = 0; index < address.Length; index++)
            {
                Console.WriteLine(address[index]);
            }         

        }
    }
}