I tend not to use HTTP::Request directly unless I have to. I use LWP::UserAgent's post method thusly (untested): 
my $ua = LWP::UserAgent->new(keep_alive => 1, requests_redirectable =>
+ [qw/GET POST HEAD/]);

my %args = (
    foo => "bar",
);

my $response = $ua->post($form_url, \%args);

[download]
You might also find that the POST request gets redirected, in which case the requests_redirectable should help.
If this doesn't fix it, we're going to need more information..

davis
It wasn't easy to juggle a pregnant wife and a troubled child, but somehow I managed to fit in eight hours of TV a day.

In reply to Re: webpage login by davis
in thread webpage login by Vanquish

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