It depends on how you use Perl to do your HTTP requests.
Given you would like to use LWP, you find an example in it's manual when you go looking for "POST".
...actually, you still have to do a little guessing and tinkering, but it will give you the idea.

If you want to use CGI.pm, you could use the post method in the form. However, you need the user to click the submit button then, you cannot do it by HTTP redirect which only works as a GET.

Cheers, Sören

Return a form to browser that the user can submit to BofA (as mentioned in another reply). You can't use LWP - the browser will need to initiate the session so that the user can process through the checkout.

If you want to validate input before forwarding user to BofA:

• perform validation
• present confirmation page listing information entered and two buttons "proceed" and "edit"

Each button is a submit for a seperate form. The "proceed" button is for a form containing all data as hidden fields and method POST for BofA. The "Edit" button is basically a back button (or whatever you choose). That's the easiest way to process this without interupting the user's flow too much.

A final note on integrity - I have no idea how BofA talks back to you about the transaction's success etc but, however it's done, double check the data they processed against that which you sent - otherwise it's trivial for someone to amend the data in the hidden fields to change the nature of the transaction.

You're basically stuck with that unless they provide an API for you to talk to them direct to process the CC - but I'm assuming you can't based on the data you presented here.

.02

cLive ;-)

As others have mentioned, you can use LWP to post data. I thought it might be useful to give you an example of some code I've used in the past (please keep in mind I am far from an expert in this area, so I'm sure others could provide better (or at least alternative) examples):

my $ua = LWP::UserAgent->new;
$ua->timeout( 600 );

my $reqobj = $ua->post( 'http://somewebsite/page.cgi',
                        {
                            Var1   => $value1,
                            Var2   => $value2,
                            Submit => 'Process query',
                        }
                      );

if( ${$reqobj}{_msg} ne 'OK' )
{
    print "\nerror posting data: ${$reqobj}{_msg}\n";
    return 1;
}

my $results = ${ $reqobj }{_content};
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The values submitted in the post method are placed in the hash that follows the URL. The website that I was using required a Submit field with the value of Process query (generated when the user hit the 'Submit' button) in order for the CGI script to process the data and return the results, so you might want to keep that in mind as your site might require something similar. Note you can test _msg for success/failure, and _content contains the results. Finally, you probably do not need to change the default setting for the timeout value of the request, but in the example above I set the timeout value to 600 seconds (10 min) (the site I was using typically takes 5-8 min to process a request).

You need to output an HTML form like this:

print <<HTML;
<form action="https://cart.bamart.com/payment.mart" method="post">
<input type="hidden"  name="ioc_merchant_id" value="$ioc_merchant_id">
<input type="hidden"  name="ioc_order_total_amount" value="30">
.....
<input type="submit" value="Process request">
</form>
HTML
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