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;
namespace?Demo_Net
{
????//本機為服務端
????//下午加一個判斷網絡是否連接；以及做出相應的判斷；
????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）;
????????????????//自己定義最大網絡連接數
????????????????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?????????????????{
????????????????????rs?=?rs?+?b[i].ToString（）;
????????????????}
????????????????//解碼
????????????????Console.WriteLine（Encoding.ASCII.GetString（b?0?l））;
????????????}?while?（true）;

????????}
????}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

????..A..H.?????32256??2021-01-26?10:02??SocketAndScaner\.vs\SocketAndScaner\v15\.suo

?????文件????????189??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\App.config

?????文件???????7168??2021-01-26?10:02??SocketAndScaner\SocketAndScaner\bin\Debug\SocketAndScaner.exe

?????文件????????189??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\bin\Debug\SocketAndScaner.exe.config

?????文件??????19968??2021-01-26?10:02??SocketAndScaner\SocketAndScaner\bin\Debug\SocketAndScaner.pdb

?????文件???????6752??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件?????????42??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj\Debug\SocketAndScaner.csproj.CoreCompileInputs.cache

?????文件????????571??2021-01-26?09:52??SocketAndScaner\SocketAndScaner\obj\Debug\SocketAndScaner.csproj.FileListAbsolute.txt

?????文件???????8077??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj\Debug\SocketAndScaner.csprojAssemblyReference.cache

?????文件???????7168??2021-01-26?10:02??SocketAndScaner\SocketAndScaner\obj\Debug\SocketAndScaner.exe

?????文件??????19968??2021-01-26?10:02??SocketAndScaner\SocketAndScaner\obj\Debug\SocketAndScaner.pdb

?????文件??????????0??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs

?????文件??????????0??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs

?????文件??????????0??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs

?????文件???????3201??2021-01-26?10:34??SocketAndScaner\SocketAndScaner\Program.cs

?????文件???????1346??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\Properties\AssemblyInfo.cs

?????文件???????2380??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\SocketAndScaner.csproj

?????文件???????1144??2021-01-26?09:52??SocketAndScaner\SocketAndScaner.sln

?????目錄??????????0??2021-01-26?09:52??SocketAndScaner\.vs\SocketAndScaner\v15\Server\sqlite3

?????目錄??????????0??2021-01-26?09:52??SocketAndScaner\.vs\SocketAndScaner\v15\Server

?????目錄??????????0??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj\Debug\TempPE

?????目錄??????????0??2021-01-26?09:52??SocketAndScaner\.vs\SocketAndScaner\v15

?????目錄??????????0??2021-01-26?09:52??SocketAndScaner\SocketAndScaner\bin\Debug

?????目錄??????????0??2021-01-26?09:52??SocketAndScaner\SocketAndScaner\obj\Debug

?????目錄??????????0??2021-01-26?09:51??SocketAndScaner\.vs\SocketAndScaner

?????目錄??????????0??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\bin

?????目錄??????????0??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\obj

?????目錄??????????0??2021-01-26?09:51??SocketAndScaner\SocketAndScaner\Properties

????...D.H.?????????0??2021-01-26?09:51??SocketAndScaner\.vs

?????目錄??????????0??2021-01-26?10:34??SocketAndScaner\SocketAndScaner

............此處省略4個文件信息