import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class ExtractRemoteAddr extends HttpServlet 
{
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException 
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        // Write other information if necessary
        out.println(request.getRemoteAddr());        // sets the information in the response flow
    }
}