1You don't have to know anything about objected-oriented Perl, LWP, or the 2HTTP module to be able to check your links. This module is designed for 3the casual user. It has one function, check_link, that returns the HTTP 4response code that it receives when it tries to fetch the web address 5passed to it. The undef value is returned for any non-HTTP failure and the 6$HTTP::SimpleLinkChecker::ERROR variable is set. 7 8The HEAD method is tried first, although if anything other than a good 9status code (those less than 400) is received, another request is made 10with the GET method. Note, however, that even with the best code, no 11module can control how servers decide to respond to a check, or control 12any of the myriad things that can go wrong with the network between you 13and the remote server. Some may filter requests based on origin IP 14address, user-agent type, or any other arbitrary factor. Some servers may 15not respond correctly at all. Furthermore, some servers might be 16temporarily down or overloaded. I recommend that you recheck "broken" 17links a couple times over a long period (like a day or two) before you 18decide they are really broken. 19