CODEWITHSUNDEEP
asp.netbrowserweb-crawlerbots
Thomas
Thomas

Reputation: 34218

How to detect that web site visitor is not using any browser

last time i was in situation where i need to detect bot and i solved this way.

public class Utility
{
    public static bool IsCrawlByBot()
    {
        List<string> Crawlers = new List<string>()
        {
            "googlebot","bingbot","yandexbot","ahrefsbot","msnbot","linkedinbot","exabot","compspybot",
            "yesupbot","paperlibot","tweetmemebot","semrushbot","gigabot","voilabot","adsbot-google",
            "botlink","alkalinebot","araybot","undrip bot","borg-bot","boxseabot","yodaobot","admedia bot",
            "ezooms.bot","confuzzledbot","coolbot","internet cruiser robot","yolinkbot","diibot","musobot",
            "dragonbot","elfinbot","wikiobot","twitterbot","contextad bot","hambot","iajabot","news bot",
            "irobot","socialradarbot","ko_yappo_robot","skimbot","psbot","rixbot","seznambot","careerbot",
            "simbot","solbot","mail.ru_bot","spiderbot","blekkobot","bitlybot","techbot","void-bot",
            "vwbot_k","diffbot","friendfeedbot","archive.org_bot","woriobot","crystalsemanticsbot","wepbot",
            "spbot","tweetedtimes bot","mj12bot","who.is bot","psbot","robot","jbot","bbot","bot"
        };

        string ua = HttpContext.Current.Request.UserAgent.ToLower();
        bool iscrawler = Crawlers.Exists(x => ua.Contains(x));
        return iscrawler;
    }
}

protected void Application_BeginRequest(Object sender, EventArgs e)
{
    //if (!Request.Browser.Crawler)
    if (!Utility.IsCrawlByBot())
    {
        string strCountryCookie = BBAreman.CountryCookie.GetCookieValue();
        string strShippingCookie = BBAreman.CountryCookie.GetShippingCookieValue();
        if (Request.Url.ToString().IndexOf(".asmx") == -1)
        {
            if (strCountryCookie.Trim() == "" || strShippingCookie.Trim() == "")
            {
                if (Request.Url.GetLeftPart(UriPartial.Authority).ToString() + "/index.aspx?ShowCountry=true" != HttpContext.Current.Request.Url.ToString())
                {
                    Response.Redirect("~/index.aspx?ShowCountry=true");
                }
            }
        }
    }
}

now i am in situation where i need to know my web site is accessing by a application other than any browser. i could develop a routine which will return many browser name but the problem is i know only few browser majorly used from pc. how to get all popular or not popular browser user agent name may be used from pc, any device or mobile. if i get it then my job will be easier to log report only when my web site would be accessed by application other than browser.

Upvotes: 0

Views: 508

Answers (2)

ortroll
ortroll

Reputation: 21

First google link. But it requires java.

http://uadetector.sourceforge.net

Upvotes: 1

ortroll
ortroll

Reputation: 21

You could check if html/text is supported.

if(Request.Browser.PreferredRenderingMime == "text/html")
{
    Response.Write("This is an HTML device.");
}

http://msdn.microsoft.com/ru-ru/library/system.web.configuration.httpcapabilitiesbase.preferredrenderingmime%28v=vs.110%29.aspx

Upvotes: 1

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