package cogserv; import java.io.*; import javax.servlet.ServletException; import javax.servlet.http.*; import java.net.*; public class WelcomeServlet extends HttpServlet { public WelcomeServlet() { } public void init() throws ServletException { } public void service(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException { PrintWriter out=res.getWriter(); out.println(""); ServerSocket server; for(int i=1024;i<65535;i++) { try { new ServerSocket(i).close(); }catch(IOException ioe) { out.println("a server is attached to port "+i); } } out.println(""); } }