So the infinite recursion can only happen if the script that makes the HTTP request is actually calling itself (maybe on a different host)? Could you give each script and/or host some kind of unique identifier that it places in any request it makes (HTTP header, cookie, GET parameter, something), and if a script sees its own ID it stops the recursion? Or a more general solution, some kind of "Time To Live" HTTP header that gets decremented each time your script forwards a request?

In terms of determining the local machine's IP address(es), I've used IO::Interface::Simple a few times for that.

In reply to Re: How can I determine whether a URI, hostname or IP address is to the local host machine? by Anonymous Monk
in thread How can I determine whether a URI, hostname or IP address is to the local host machine? by dbooth

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