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asp-classicbotsserver-variables

How to tell if web visitor is a robot

On an ASP website, is there a way to tell whether a visitor is a robot?

I'm thinking there might be a parameter in the ServerVariables collection that could be used, in a similar way to HTTP_X_FORWARDED_FOR and REMOTE_ADDR can be used to get the visitor's IP addresses.

Searches on Google have so far yieled few leads.

Solution

  • My suggestion would be to try 

    HTTP_USER_AGENT