实现大批量域名查询 及 whois查询

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections;
using System.IO;

public partial class _Default : System.Web.UI.Page 
{
    public string strServerCom = "whois.internic.com";
    public string strServerCN = "whois.cnnic.net.cn";
    public string strServerOth0 = "drop.cnnic.net.cn";
    //public string strServerOth = "whois.hichina.com";
    public string strServerOth = "whois.hichina.com";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            lblResult.Text = "";
        }
    }

    域名查询事件#region 域名查询事件
    protected void btnWhois_Click(object sender, EventArgs e)
    {
        string strServer = strServerOth;
        string strDomain = txtDomain.Text.ToString();
        //string strDomainType;
        string strResponse;

        lblResult.Text = "";

        try
        {
            string[] arrDomain = strDomain.Split('.');
            if (arrDomain.Length == 3)
            {
                //if (arrDomain[1].ToUpper() == "COM" && arrDomain[2] == "CN")
                //{
                //    strServer = strServerOth0;
                //}
                strServer = AutoChoiseWhois(arrDomain[2].ToUpper());
            }
            else
            {
                strServer = AutoChoiseWhois(arrDomain[1].ToUpper());
                //if (arrDomain[1].ToUpper() == "CN")
                //{

                //    strServer = strServerCN;
                //}
            }
        }
        catch
        {
            lblResult.Text = "抱歉，您所提交的域名查询参数不正确！";
            return;
        }


        bool blSuccess = ShowWhois(strDomain, strServer, out strResponse);
        
        if (blSuccess)
        {
            lblResult.Text = strResponse;
        }
        else
        {
            lblResult.Text = "查找失败.";
        }
    }
    #endregion

    新域名查询事件#region 新域名查询事件
    protected void btnIsExist_Click(object sender, EventArgs e)
    {
        string sFlag = "\r\n"; //计算要查询的个数用
        string strDomain = txtDomain.Text.Trim();
        string tmpDomain = null;
        string strServer = strServerOth;
        string strErrMsg = null;

        lblResult.Text = "";

        string[] arr1 = Regex.Split(strDomain, sFlag, RegexOptions.IgnoreCase | RegexOptions.Singleline);
        int nRet = arr1.Length;//得到域名查询个数

        try
        {
            for (int pi = 0; pi < nRet; pi++)
            {
                tmpDomain = arr1[pi].ToString();

                string[] arrDomain = tmpDomain.Split('.');//域名分割
                if (arrDomain.Length == 3)
                {
                    strServer = AutoChoiseWhois(arrDomain[2].ToUpper());
                    //if (arrDomain[1].ToUpper() == "COM" && arrDomain[2] == "CN")
                    //{
                    //    strServer = strServerOth0;
                    //}
                }
                else
                {
                    strServer = AutoChoiseWhois(arrDomain[1].ToUpper());
                    //if (arrDomain[1].ToUpper() == "CN")
                    //{

                    //    strServer = strServerCN;
                    //}
                }

                if (IsExits(tmpDomain, strServer, out strErrMsg) == false)
                    lblResult.Text += tmpDomain + "<font color=blue>[可以注册]</font> <br>";
                else
                    lblResult.Text += tmpDomain + "<font color=red>[已注册]</font> <br>";
                if (strErrMsg != null)
                    lblResult.Text = strErrMsg.ToString();
            }
        }
        catch
        {
            lblResult.Text = "抱歉，您所提交的域名查询参数不正确！";
        }


    }
    #endregion

    调用查询Whois函数#region 调用查询Whois函数
    /**//// <summary>
    /// 调用查询Whois函数
    /// </summary>
    /// <param name="strDomain">要查询的域名</param>
    /// <param name="strServer">对应域名服务品</param>
    /// <param name="strResponse">返回信息值</param>
    /// <returns></returns>
    private bool ShowWhois(string strDomain, string strServer, out string strResponse)
    {
        strResponse = "none";
        bool blSuccess = false;

        TcpClient tcpc = new TcpClient();
        try
        {
            tcpc.Connect(strServer, 43);
        }
        catch (SocketException ex)
        {
            strResponse = ex.Message;
            return false;
        }

        strDomain += "\r\n";
        Byte[] arrDomain = Encoding.UTF8.GetBytes(strDomain.ToCharArray());
        try
        {
            Stream s = tcpc.GetStream();
            s.Write(arrDomain, 0, strDomain.Length);

            StreamReader sr = new StreamReader(tcpc.GetStream(), Encoding.UTF8);
            StringBuilder strBuilder = new StringBuilder();
            string strLine = null;

            while (null != (strLine = sr.ReadLine()))
            {
                strBuilder.Append(strLine + "<br>");
            }
            tcpc.Close();

            blSuccess = true;
            string my = "Power By Bluesky：<a href=\"http://www.519sou.com\" title=\"我要就搜\">www.519sou.com</a><br>";
            my += "QQ:184817846 Email:ltwl@qq.com";
            //string my = null;
            strResponse = strBuilder.ToString() + my;
        }
        catch (Exception e)
        {
            strResponse = e.ToString();
        }

        return blSuccess;
    }
    #endregion

    调用查询注册与否函数#region 调用查询注册与否函数
    /**//// <summary>
    /// 调用查询注册与否函数
    /// </summary>
    /// <param name="strDomain">要查询的域名</param>
    /// <param name="strServer">对应域名服务器</param>
    /// <param name="strErrMsg">返回错误信息</param>
    /// <returns></returns>
    private bool IsExits(string strDomain, string strServer,out string strErrMsg)
    {
        strErrMsg = null;
        bool blSuccess = false;

        TcpClient tcpc = new TcpClient();
        try
        {
            tcpc.Connect(strServer, 43);
        }
        catch (SocketException ex)
        {
            strErrMsg = ex.Message;
            return false;
        }

        strDomain += "\r\n";
        Byte[] arrDomain = Encoding.UTF8.GetBytes(strDomain.ToCharArray());
        try
        {
            Stream s = tcpc.GetStream();
            s.Write(arrDomain, 0, strDomain.Length);

            StreamReader sr = new StreamReader(tcpc.GetStream(), Encoding.UTF8);
            StringBuilder strBuilder = new StringBuilder();
            string strLine = null;

            while (null != (strLine = sr.ReadLine()))
            {
                strBuilder.Append(strLine + "<br>");
            }
            tcpc.Close();
            
            blSuccess = S_Result(strBuilder.ToString(), strServer);
        }
        catch (Exception e)
        {
            strErrMsg = e.ToString();
        }

        return blSuccess;
    }
    #endregion

    分析返回结果#region 分析返回结果
    /**//****************************************************************
     * 
     * Powere By Bluesky On Date[2007-5-31]
     * 
     * *************************************************************/
    /**//// <summary>
    /// 分析返回结果
    /// </summary>
    /// <returns>不存在 True 存在 False</returns>
    private bool S_Result(string strResponse,string strServer)
    {
        string strReg = "no match";
        bool bFlag = false;
        if (strServer.ToLower() == "whois.dotmobiregistry.net")
        {
            if (strResponse.ToLower().Trim().StartsWith("not found") == false)
                bFlag = true;
        }
        else if (strServer.ToLower() == "whois.cnnic.net.cn")
        {
            if (strResponse.ToLower().Trim().StartsWith("no matching") == false)
                bFlag = true;
        }
        else
        {
            if (strResponse.ToLower().Trim().IndexOf(strReg) < 1)
                bFlag = true;
        }
        
        return bFlag;
    }
    #endregion

    自动选择WHOIS服务器#region 自动选择WHOIS服务器
    private string AutoChoiseWhois(string domainType)
    {
        string WhoisServer;
        switch (domainType.ToUpper())
        { 
            case "COM":
                WhoisServer = "whois.internic.com";
                break;
            case "NET":
                WhoisServer = "whois.internic.com";
                break;
            case "CN":
                WhoisServer = "whois.cnnic.net.cn";
                break;
            case "ORG":
                WhoisServer = "whois.internic.com";
                break;
            case "EDU":
                WhoisServer = "whois.verisign-grs.net";
                break;
            case "BIZ":
                WhoisServer = "whois.biz";
                break;
            case "NAME":
                WhoisServer = "whois.nic.name";
                break;
            case "GOV":
                WhoisServer = "whois.nic.gov";
                break;
            case "INFO":
                WhoisServer = "whois.afilias.info";
                break;
            case "MOBI":
                WhoisServer = "whois.dotmobiregistry.net";
                break;
            default:
                WhoisServer = "whois.hichina.com";
                break;
        }
        return WhoisServer;
    }
    #endregion
}

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