C# Telnet 類庫代碼，謹獻給還在尋找C# Te

                                C#  Telnet  類庫代碼

本文鏈接：
https://blog.51cto.com/2193967/2440126
今天給筆記本裝了固態(tài)，速度提升很明顯，很高興，發(fā)個微博留作紀念。

自學的C#，干網(wǎng)絡的，想弄個工具方便日常工作，想自己實現(xiàn)批量操作的工具。
想起來很簡單做起來很費勁。網(wǎng)上一頓亂查。
這里感謝“Telnet 非常實用的類庫 - 王小壯的博客 - CSDN博客”
https://blog.csdn.net/weixin_42183571/article/details/80783268

這個文章給了我方向，代碼看了N遍，有了很多啟發(fā)。
那里面的異步?jīng)]看懂，當時不懂異步，看著和天數(shù)一樣。。。。
什么協(xié)議都是有協(xié)商的過程：
telnet協(xié)商代碼 取自 王小壯 ，有一小點的修改。

多了不BB，上代碼。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Collections;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;

namespace  項目名字
{
        public  class Telnet
        {
    #region // 協(xié)商的命令碼直接復制

    // private byte[] receivebytes = new byte[1024]; //接受
    readonly Char IAC = Convert.ToChar(255);
    readonly Char DO = Convert.ToChar(253);
    readonly Char DONT = Convert.ToChar(254);
    readonly Char WILL = Convert.ToChar(251);
    readonly Char WONT = Convert.ToChar(252);
    readonly Char SB = Convert.ToChar(250);
    readonly Char SE = Convert.ToChar(240);

    const Char IS = '0';
    const Char SEND = '1';
    const Char INFO = '2';
    const Char VAR = '0';
    const Char VALUE = '1';
    const Char ESC = '2';
    const Char USERVAR = '3';

    private ArrayList m_ListOptions = new ArrayList();
    enum Verbs { WILL = 251, WONT = 252, DO = 253, DONT = 254, IAC = 255 }
    enum Options { RD = 1, SGA = 3 }
    private Socket sock = null;  // 定義全局變量，方便調(diào)用

            //定義事件
    private static ManualResetEvent connectDone = new ManualResetEvent(false);
    private static ManualResetEvent receiveDone = new ManualResetEvent(false);

    private static ManualResetEvent sendDone = new ManualResetEvent(false);
    // private static ManualResetEvent waitDone = new ManualResetEvent(false);
    // private string str_data = "";// 接受到的數(shù)據(jù)
    private StringBuilder str_data = new StringBuilder();// 所有收到的數(shù)據(jù)
    private StringBuilder Str_Temp = new StringBuilder();//單個命令的執(zhí)行結果,不完整實際沒有用
    public bool Connected //連接狀態(tài)
    {
        get
        {

            if (sock != null)
            {
                return sock.Connected;
            }
            else
            {
                return false;
            }

        }
        // get return = sock.Connected;
        // set; 
    }
    public string RecData //取得執(zhí)行的log
    {
        //get
        //{    return str_data;
        //}
        get
        {
            return str_data.ToString();
        }

    }
    public string TempData //取得每個命令執(zhí)行的log，有問題，沒有用
    {
        //get
        //{    return str_data;
        //}
        get
        {
            return Str_Temp.ToString();
        }

    }

    #endregion

    public Telnet(string IP)
        : this(IP, 23) { } //構造函數(shù)鏈
    public Telnet(string IP, int port)// 工作主函數(shù)
    {
        //IPAddress ipAddress = IPAddress.Parse("192.168.56.2");
        IPAddress ipAddress = IPAddress.Parse(IP);
        IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
        sock = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
        Console.WriteLine("connectDone.Rese ： 設置為無信號開始連接");
        connectDone.Reset();
        sock.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback), sock);// 異步連接
        connectDone.WaitOne(10000, false);//異步阻斷，連接成功就進入下異步，加入連接超時間10S，

        if (!connectDone.WaitOne(10000, false))
        {
            sock.Close();//連接失敗，超時退出；   
            Console.WriteLine("連接失敗，超時退出");
        }
        else   //  如果連接成功，開始接受數(shù)據(jù)。
        {
            //開始異步接受的線程
            Thread threadread = new Thread(new ThreadStart(Receive));
            threadread.Start();
        }

    }
    /// <summary>
    /// 用戶名密碼默認回顯為“:”
    /// </summary>
    /// <param name="IP"></param>
    /// <param name="port"></param>
    /// <param name="username"></param>
    /// <param name="passwd"></param>
    public Telnet(string IP, int port,string username,string passwd)// 工作主函數(shù)  
     :this(IP, port, username, passwd, ":", ":") //這里的兩個冒號是登錄連接設備的回顯，
    {

    }
    public Telnet(string IP, int port, string username, string passwd,string usernamewait,string passwdwait)// 工作主函數(shù)
    {
        //IPAddress ipAddress = IPAddress.Parse("192.168.56.2");
        IPAddress ipAddress = IPAddress.Parse(IP);
        IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
        sock = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
        Console.WriteLine("connectDone.Rese ： 設置為無信號開始連接");
        connectDone.Reset();
        sock.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback), sock);// 異步連接
        connectDone.WaitOne(10000, false);

        if (!connectDone.WaitOne(10000, false))
        {
            sock.Close();//連接失敗，超時退出；   
            Console.WriteLine("連接失敗，超時退出");
        }
        else   //  如果連接成功，開始接受數(shù)據(jù)。
        {
            //開始異步接受的線程
            Thread threadread = new Thread(new ThreadStart(Receive));
            threadread.Start();
            Send(usernamewait, username + "\r"); //自動連接配置，可以手動
            Send(passwdwait, passwd + "\r");
        }

    }
    public Telnet(string IP, int port,int timeout)// 工作主函數(shù)
    {
        //IPAddress ipAddress = IPAddress.Parse("192.168.56.2");
        IPAddress ipAddress = IPAddress.Parse(IP);
        IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
        sock = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
        Console.WriteLine("connectDone.Rese ： 設置為無信號開始連接");
        connectDone.Reset();
        sock.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback), sock);// 異步連接
        connectDone.WaitOne(timeout*1000, false);

        if (!connectDone.WaitOne(timeout * 1000, false))
        {
            sock.Close();//連接失敗，超時退出；   
            Console.WriteLine("連接失敗，超時退出");
        }
        else   //  如果連接成功，開始接受數(shù)據(jù)。
        {
            //開始異步接受的線程
            Thread threadread = new Thread(new ThreadStart(Receive));
            threadread.Start();
        }

    }
    /// <summary>
    /// 異步連接，異步回調(diào)
    /// </summary>
    /// <param name="ar"></param>
    private void ConnectCallback(IAsyncResult ar)
    {
        try
        {
            // Retrieve the socket from the state object.  
            Socket client = (Socket)ar.AsyncState;

            // Complete the connection.  
            client.EndConnect(ar);
            //Console.WriteLine("Socket connected to {0}",
            //    client.RemoteEndPoint.ToString());

            //// Signal that the connection has been made.  
            Console.WriteLine(" connectDone.Set:設置為有信號"); 
            connectDone.Set();  // 這里是把連接的事件作為 有信號，主函數(shù)中的阻斷會繼續(xù)執(zhí)行，否則10s超時了
        }
        catch (Exception e)
        {
            Console.WriteLine("異步連接：" + e.ToString());
        }
    }
            //這里是接受數(shù)據(jù)的方法
    private void Receive()
    {
        try
        {
          //  receiveDone.Reset();
                        //接受沒有用阻斷，這里用的是循環(huán)接受,是在回調(diào)中實現(xiàn)
            // Create the state object.  
                            // 這里是查了msdn文檔，有這個，主要進是傳遞 這個輔助類中主要是傳遞 socke 與 state.buffer
            StateObject state = new StateObject(); 
            state.workSocket = sock;

            // Begin receiving the data from the remote device.  
            sock.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
                new AsyncCallback(ReceiveCallback), state);
          //  receiveDone.WaitOne(10000,false);
            //string ddd = string.Empty;
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }
            //接受數(shù)據(jù)異步回調(diào)
    private void ReceiveCallback(IAsyncResult ar)
    {
        try
        {
            StateObject state = (StateObject)ar.AsyncState;
            Socket client = state.workSocket;
            //取得 sock 其實沒必要，因為socket 是全局的變量
            int bytesRead = client.EndReceive(ar);

            if (bytesRead > 0)
            {
                            ////創(chuàng)建一個與接受 數(shù)據(jù)大小一致的 byte[] 
                                        Byte[] mToProcess = new Byte[bytesRead];  
                Array.Copy(state.buffer, mToProcess, bytesRead);//數(shù)組復制

                Str_Temp = ProcessOptions(mToProcess);//清洗掉命令碼，取得回顯的實際數(shù)據(jù)
                                                      //  Console.WriteLine("*********************************************");
                Console.Write(Str_Temp);//回顯本次的數(shù)據(jù)
                                        // Console.WriteLine("*********************************************");
                                        // response = mOutText;
                str_data.Append(Str_Temp);  //所有的數(shù)據(jù)，把每次的接受的數(shù)據(jù)添加到 str_data.用于后期保存log
                string temps = str_data.ToString();//這里是測試每次取得數(shù)據(jù)的斷點，懶得刪

                client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
                    new AsyncCallback(ReceiveCallback), state);

                //下面進是循環(huán)取得數(shù)據(jù)的關鍵，每次接受完數(shù)據(jù)，又開始新的接受數(shù)據(jù)。
            }
            else
            {

                //這里是接受數(shù)據(jù)為0，正常異步接受到的數(shù)據(jù)為0時應該沒有數(shù)據(jù)阻斷狀態(tài)，不會到這個地方。 
                Console.WriteLine("接受數(shù)據(jù)小于0:" + "發(fā)生異常");
                client.Close();//關閉連接
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("接受數(shù)據(jù)異常" + e.ToString());//這里是抓取異常的代碼。一般telnet結束時，異步還處理阻斷狀態(tài)，有時會發(fā)送，沒啥用。
        }
    }

            // 發(fā)送命令的方法，這里的data 是沒有 \r 回車的，
    public void Send(String data)
    {
        try
        {

            byte[] byteData = Encoding.ASCII.GetBytes(data);
            //異步發(fā)送
                                            sock.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), sock);
                                    //異步阻斷，發(fā)送完成后繼續(xù)執(zhí)行，未完成進一只阻斷，可以加超時時間   sendDone.WaitOne(10000，false);
                                    sendDone.WaitOne();

        }
        catch
        {
            Console.WriteLine("出現(xiàn)異常：{0}", data + "\r\n");
        }
        finally
        {
            //client.Shutdown(SocketShutdown);
        }
    }
    public void Send(char data)
    {
        char[] char_data = { data };
        try
        {
            byte[] byteData = Encoding.ASCII.GetBytes(char_data);
            sock.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), sock);
            sendDone.WaitOne();
        }
        catch
        {
            Console.WriteLine("出現(xiàn)異常：{0}", data + "\r\n");
        }
        finally
        {
            //client.Shutdown(SocketShutdown);
        }
    }
    public void Send(char[] data)
    {

        try
        {
            byte[] byteData = Encoding.ASCII.GetBytes(data);
            sock.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), sock);
            sendDone.WaitOne();
        }
        catch
        {
            Console.WriteLine("出現(xiàn)異常：{0}", data + "\r\n");
        }
        finally
        {
            //client.Shutdown(SocketShutdown);
        }
    }
    public void Send(byte[] byteData)
    {

        try
        {
            //byte[] byteData = Encoding.ASCII.GetBytes(data);
            sock.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), sock);
            sendDone.WaitOne();
        }
        catch
        {
            Console.WriteLine("發(fā)送出現(xiàn)異常bytedata：{0}", byteData.ToString() + "\r\n");
        }
        finally
        {
            //client.Shutdown(SocketShutdown);
        }
    }
    /// <summary>
    /// 執(zhí)行命令的方法，判斷回顯字符，執(zhí)行命令
    /// </summary>
    /// <param name="expect">回顯字符串判斷</param>
    /// <param name="command">判定成功執(zhí)行的命令</param>
    /// <param name="delay">執(zhí)行命令的延遲</param>
    public void Send(string expect, string command, int delay_time)
    {
        // string local_data = string.Empty ;
        int i = 0;

        while (true)
        {
        //這里主要是判斷 str_data 中的數(shù)據(jù)，接受的數(shù)據(jù)會持續(xù)寫入到 這個中，接受可能有延遲，加循環(huán)判斷，
            if (str_data.ToString().TrimEnd().EndsWith(expect))
            {
                Thread.Sleep(delay_time);//執(zhí)行命令的延遲
                Send(command);
                break;

            }
            else
            {// 增加命令執(zhí)行代碼判斷失敗的懲罰值，8次后，當前接受的數(shù)據(jù)中還沒有出現(xiàn)判斷的字符串，socket關閉
                i++;
            }
            Thread.Sleep(1000);//  如果當前的接受數(shù)據(jù)中沒有判斷的字符出現(xiàn)，等待1s后再次判斷
            if(i==8)
            {
                //Console.WriteLine("命令執(zhí)行錯誤，錯誤命令" + command + "命令執(zhí)行結果：");// + str_data.ToString());
                //Console.WriteLine();
                // Console.WriteLine("命令執(zhí)行錯誤，錯誤命令"+ command+"命令執(zhí)行結果：" +str_data.ToString());
               // str_data.Append("異常終結");
                sock.Close ();
                break;

            }
            //    }

        }
    }
    /// <summary>
    /// 執(zhí)行命令的方法,默認延遲500ms。
    /// </summary>
    /// <param name="expect">回顯字符串判斷</param>
    /// <param name="command">判定成功執(zhí)行的命令</param>
    public void Send(string expect, string command)
    {
        Send(expect, command, 100);

    }

    private static void SendCallback(IAsyncResult ar)
    {//異步發(fā)送數(shù)據(jù)
        try
        {
            Socket client = (Socket)ar.AsyncState;
            int bytesSent = client.EndSend(ar);
            sendDone.Set();

        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }

    /// <summary>
    /// 清洗命令碼。telnet的核心代碼
    /// </summary>
    /// <param name="resbyte"></param>
    /// <returns></returns>
    private StringBuilder ProcessOptions(byte[] resbyte)
    {//網(wǎng)絡所得

        string m_DISPLAYTEXT = "";
        string m_strTemp = "";
        //string m_strOption = "";
        //string m_strNormalText = "";
        StringBuilder m_strNormalText = new StringBuilder();
        bool bScanDone = false;
        int ndx = 0;
        int ldx = 0;
        char ch, canshu;
        try
        {
            //把數(shù)據(jù)從byte[] 轉(zhuǎn)化成string
            for (int i = 0; i < resbyte.Length; i++)
            {
                Char ss = Convert.ToChar(resbyte[i]);
                m_strTemp = m_strTemp + Convert.ToString(ss);
            }

            //此處意義為,當沒描完數(shù)據(jù)前,執(zhí)行掃描
            while (bScanDone != true)
            {
                //獲得長度
                int lensmk = m_strTemp.Length;
                //之后開始分析指令,因為每條指令為255 開頭,故可以用此來區(qū)分出每條指令
                ndx = m_strTemp.IndexOf(Convert.ToString(IAC));//首次出現(xiàn)IAC的位置

                //此處為出錯判斷,本無其他含義
                if (ndx > lensmk)
                    ndx = m_strTemp.Length;

                //此處為,如果搜尋到IAC標記的telnet 指令,則執(zhí)行以下步驟
                if (ndx != -1)
                {
                    #region 如果存在IAC標志位
                    // 將 標志位IAC 的字符 賦值給最終顯示文字
                    m_DISPLAYTEXT += m_strTemp.Substring(0, ndx);
                    // 此處獲得命令碼
                    ch = m_strTemp[ndx + 1];//獲取命令碼
                    canshu = m_strTemp[ndx + 2];//獲取命令碼

                    //如果命令碼是253(DO) 254(DONT)  521(WILL) 252(WONT) 的情況下
                    if (ch == DO || ch == DONT || ch == WILL || ch == WONT)
                    {
                        //將以IAC 開頭3個字符組成的整個命令存儲起來
                        //m_strOption = m_strTemp.Substring(ndx, 3);
                        //m_ListOptions.Add(m_strOption);

                        // 將 標志位IAC 的字符 賦值給最終顯示文字
                        //m_DISPLAYTEXT += m_strTemp.Substring(0, ndx);

                        //將處理過的字符串刪去
                        string txt = m_strTemp.Substring(ndx + 3);
                        m_strTemp = txt;
                        telnetproceess(ch, canshu);
                    }
                    //如果IAC后面又跟了個IAC (255)
                    else if (ch == IAC)
                    {
                        //則顯示從輸入的字符串頭開始,到之前的IAC 結束
                        //m_DISPLAYTEXT += m_strTemp.Substring(0, ndx);
                        //之后將處理過的字符串排除出去
                        m_strTemp = m_strTemp.Substring(ndx + 1);
                        string xxc = m_strTemp;
                    }
                    //如果IAC后面跟的是SB(250)
                    else if (ch == SB)
                    {
                        //m_DISPLAYTEXT += m_strTemp.Substring(0, ndx);
                        ldx = m_strTemp.IndexOf(Convert.ToString(SE));
                        // m_strOption = m_strTemp.Substring(ndx, ldx);
                        //m_ListOptions.Add(m_strOption);
                        m_strTemp = m_strTemp.Substring(ldx + 1);
                        telnetproceess(ch, canshu);
                    }

                    #endregion
                }
                //若字符串里已經(jīng)沒有IAC標志位了
                else
                {
                    //顯示信息累加上m_strTemp存儲的字段
                    m_DISPLAYTEXT = m_DISPLAYTEXT + m_strTemp;
                    bScanDone = true;
                }
            }
            //輸出人看到的信息
            m_strNormalText.Append(m_DISPLAYTEXT);
        }
        catch (Exception eP)
        {
            throw new Exception("解析傳入的字符串錯誤:" + eP.Message);
        }
        return m_strNormalText;

    }
            //異步委托調(diào)用，這里是協(xié)商代碼，測試很多設備 占時沒發(fā)現(xiàn)什么問題
    private void telnetproceess(char ch, char canshu)
    {
        //如果命令碼是253(DO) 254(DONT)  251(WILL) 252(WONT) 的情況下
        if (ch == DO)//253 對端設備對本端設備的發(fā)出參數(shù)請求（如果支持對方的，則DO確認，不支持則DONT）
        {
            if (canshu == 32 || canshu == 35 || canshu == 39 || canshu == 36)
            {
                //發(fā)送命令碼
                byte[] sendcom = new byte[3];
                sendcom[0] = 255;
                sendcom[1] = 252;
                sendcom[2] = Convert.ToByte(canshu);
                //tcpSocket.Send(sendcom);
                //steam.Write(sendcom, 0, sendcom.Length);
                Send(sendcom);

            }
            else if (canshu == 24)
            {
                //byte[] sendcom = { 255, 240, 78, 65, 87, 83, 32, 8, 0, 32, 2, 5, 255, 240 };
                byte[] sendcom = { 255, 251, 24 };
                //steam.Write(sendcom, 0, sendcom.Length);
                Send(sendcom);
            }
            else if (canshu == 31)
            {/*
                255 250 31 window size
                255 240 開始
                recv SB N78A65W87S83 8(56)0(48) 2(50)5(53)
                */
                byte[] sendcom1 = { 255, 251, 31 };//同意窗口大小請求
                Send(sendcom1);
                //steam.Write(sendcom1, 0, sendcom1.Length);
                byte[] sendcom = { 255, 250, 31, 0, 80, 0, 25, 255, 240 };//發(fā)送窗口大小
                //steam.Write(sendcom, 0, sendcom.Length);
                Send(sendcom);
                //byte[] sendcoms = { 255, 250, 31,78, 65,87,83, 32,56,48,32,50,53,255,240};
                //byte[] sendcoms = { 255, 250, 31, 78, 65, 87, 83, 255, 240 };
                //sock.Send(sendcoms);
            }
            else if (canshu == 33)
            {

            }
            else if (canshu == 1 || canshu == 34)
            {
                // 255 252 1        echo
                byte[] sendcom = { 255, 252, Convert.ToByte(canshu) };
                //steam.Write(sendcom, 0, sendcom.Length);
                Send(sendcom);
            }

            else
            {
                string cuowu = canshu.ToString();//
                string xx;//拍錯用
            }

        }
        else if (ch == DONT)//254 協(xié)商對端設備的參數(shù)（對端發(fā)出對本端參數(shù)的請求）
        {

        }
        else if (ch == WILL)//251 本端設備的參數(shù)（發(fā)送給對方）
        {
            if (canshu == 3)
            {
            }
            else if (canshu == 1 || canshu == 3)
            {
                //255 253 echo;
                byte[] sendcom = { 255, 253, Convert.ToByte(canshu) };
                //steam.Write(sendcom, 0, sendcom.Length);
                Send(sendcom);
            }
            else
            {
                //255 254 status{ }
                byte[] sendcom = { 255, 254, Convert.ToByte(canshu) };
                //steam.Write(sendcom, 0, sendcom.Length);
                Send(sendcom);
            }

        }
        else if (ch == WONT)//252 本端設備的參數(shù)（發(fā)送給對方）
        {

        }
        else if (ch == 250)
        {
            if (canshu == 24)
            {
                //byte[] sendcom = { 255, 254, Convert.ToByte(canshu) };
                // recv SB 24 0 ANSI
                byte[] sendcom = { 255, 250, 24, 0, 65, 78, 83, 73, 255, 240 };//發(fā)送終端編碼send SB 24 0  ANSI
                Send(sendcom);
                //steam.Write(sendcom, 0, sendcom.Length);
                // recv SB 65 87 S[Unrecognized]
                //recv SB NAWS 80 25
                // IAC，SB，24，0，'I'，'B'，'M'，'P'，'C'， IAC，SE

            }
        }

    }

    /// <summary>
    /// 保存log文件.這里個人需要，操作的就是本次的 str_data  
    /// </summary>
    /// <param name="FilePathName">絕對文件路徑</param>
    public void Save_File(string FilePathName)
    {
        string[] Str_dir = FilePathName.Split('\\');
        string FilePath_Dir = string.Empty;
        for (int i = 0; i < Str_dir.Length - 1; i++)
        {
            FilePath_Dir += Str_dir[i] + "\\";
        }
        string FileName = Str_dir[Str_dir.Length - 1];
        Save_File(FilePath_Dir, FileName);
    }

    /// <summary>
    /// 判斷文件或目錄是否存在
    /// </summary>這是保存到當前程序運行到目錄以今天日期生成目錄
    /// <param name="FilePath_Dir">目錄</param>
    /// <param name="FileName">文件名稱</param>
    private void File_Exists(string FilePath_Dir, string FileName)
    {

        string FilePathName = FilePath_Dir + "\\" + FileName;
        // string path = FilePath_Dir + "\\" + DateTime.Now.ToString("yyyy-MM-dd") + "\\" + FilePathName + ".txt";
        if (!Directory.Exists(FilePath_Dir))
        {
            Directory.CreateDirectory(FilePath_Dir);
        }

        if (!File.Exists(FilePathName))
        {
            FileStream fs = File.Create(FilePathName);
            fs.Close();
        }
    }
    /// <summary>
    /// 保存文件
    /// </summary>
    /// <param name="FilePath_Dir">文件的目錄</param>
    /// <param name="FileName">文件的名稱</param>
    public void Save_File(string FilePath_Dir, string FileName)//保存文件函數(shù)
    {
        string FilePathName = FilePath_Dir + "\\" + FileName;
        File_Exists(FilePath_Dir, FileName);
        StreamWriter steam = new StreamWriter(FilePathName, true, Encoding.UTF8);
        steam.Write(str_data);
        steam.Close();
    }
    public void close()
    {
        try
        {
            sock.Shutdown(SocketShutdown.Both);
            sock.Close();
        }
        catch { }
    }
    //輔助類傳遞 接收數(shù)據(jù)，與socket
    public class StateObject
    {
        // Client socket.  
        public Socket workSocket = null;
        // Size of receive buffer.  
        public const int BufferSize = 1024;
        // Receive buffer.  
        public byte[] buffer = new byte[BufferSize];
        // Received data string.  
        public StringBuilder sb = new StringBuilder();
        public string waitfor = string.Empty;
    }

}

}