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
{
  //本機為服務(wù)端
  //下午加一個判斷網(wǎng)絡(luò)是否連接；以及做出相應(yīng)的判斷；
  class Program
  {
    static Socket msock;
    static void Main(string[] args)
    {
     
        //先判斷是否ping通：
        string ips = "10.18.14.111";
        string str = NetConnect(ips);
        Console.WriteLine(str);
        Console.ReadLine();
    }
    //通過ping的方法判斷是否連接；
    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% 丟失)") != -1)
      {
        pingstr = "連接成功";
 
        //定義socket連接 需要的本機ip以及相應(yīng)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);
        //自己定義最大網(wǎng)絡(luò)連接數(shù)
        msock.Listen(10);
        //新建線程處理；
        Thread th = new Thread(delegate()
        {
          Rec();
        });
        th.IsBackground = true;
        th.Start();
      }
       else
      {
        pingstr = "連接超時";
      }
      p.Close();
      return pingstr;
    }
    //監(jiān)聽是否有鏈接，新開線程處理
    static void Rec()
    {
      do
      {
        Socket s = msock.Accept();
        Thread th = new Thread(delegate() {
          Parse(s);
        });
        th.IsBackground = true;
        th.Start();
        
      } while (true);
    }
 
    //有鏈接時處理獲取的信息
    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();
        }
        //解碼
        Console.WriteLine(Encoding.ASCII.GetString(b, 0, l));
      } while (true);
      
    }
  }
 
}