I'm trying to write a program that verifies HTML links and then spiders through the site and checks the links on all the subsequent pages it turns up. I'm using HTML::LinkExtor and LWP::Simple to verify the links. My problem comes with implementing a spider that doesn't end up in an infinite loop. Any ideas for keeping track of visited pages and how to avoid returning to them?

In reply to Verifying Links in HTML by agent00013

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