As for the LWP::UserAgent variant, I think POST requests aren't redirectable by default... see requests_redirectable. Not sure if it'll help, but it's at least worth a try.

In reply to Re: Problem with fetching contents of page after login form submission using POST: LWP::UserAgent and WWW::Mechanize by almut
in thread Problem with fetching contents of page after login form submission using POST: LWP::UserAgent and WWW::Mechanize by ajay.awachar

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