using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Diagnostics;
using System.Net;
namespace Demo_Net
{
  //本机为服务端
  //下午加一个判断网络是否连接；以及做出相应的判断；
  class Program
  {
    static Socket msock;
    static void Main(string[] args)
    {
     
        //先判断是否ping通：
        string ips = \"10.18.14.111\";
        string str = NetConnect(ips);
        Console.WriteLine(str);
        Console.ReadLine();
    }
    //通过ping的方法判断是否连接；
    private static string NetConnect(string ip)
    {
      Process p = new Process();
      p.StartInfo.FileName = \"cmd.exe\";
      p.StartInfo.UseShellExecute = false;
      p.StartInfo.RedirectStandardError = true;
      p.StartInfo.RedirectStandardInput = true;
      p.StartInfo.RedirectStandardOutput = true;
      p.StartInfo.CreateNoWindow = false;
      string pingstr;
      p.Start();
      p.StandardInput.WriteLine(\"ping -n 1 \" + ip);
      p.StandardInput.WriteLine(\"exit\");
      string strRst = p.StandardOutput.ReadToEnd();
      if (strRst.IndexOf(\"(0% 丢失)\") != -1)
      {
        pingstr = \"连接成功\";
 
        //定义socket连接 需要的本机ip以及相应的端口；
        msock = new Socket(AddressFamily.InterNetwork, SocketType.Stream,         ProtocolType.Tcp);
        var localIP = new IPEndPoint(IPAddress.Parse(\"10.18.14.23\"), 10001);
        msock.Bind(localIP);
        //自己定义最大网络连接数
        msock.Listen(10);
        //新建线程处理；
        Thread th = new Thread(delegate()
        {
          Rec();
        });
        th.IsBackground = true;
        th.Start();
      }
       else
      {
        pingstr = \"连接超时\";
      }
      p.Close();
      return pingstr;
    }
    //监听是否有链接，新开线程处理
    static void Rec()
    {
      do
      {
        Socket s = msock.Accept();
        Thread th = new Thread(delegate() {
          Parse(s);
        });
        th.IsBackground = true;
        th.Start();
        
      } while (true);
    }
 
    //有链接时处理获取的信息
    static void Parse(Socket s)
    {
      do
      {
        byte[] b = new byte[1000];
        int l = s.Receive(b);
        b = b.Take(l).ToArray();
        string rs = string.Empty;
        for (int i = 0; i < b.Length; i++)
        {
          rs = rs + b[i].ToString();
        }
        //解码
        Console.WriteLine(Encoding.ASCII.GetString(b, 0, l));
      } while (true);
      
    }
  }
 
}