Using the test script below I get the INVALID response (as I would expect).

c:\inetpub\wwwroot\test>perl ipn_test.cgi
Content-Type: text/plain

REQUEST
POST https://ipnpb.sandbox.paypal.com/cgi-bin/webscr
Host: ipnpb.sandbox.paypal.com
User-Agent: libwww-perl/6.38
Content-Type: application/x-www-form-urlencoded

cmd=_notify-validate&

RESPONSE
SUCCESS : INVALID

#!/usr/bin/perl
# ipn_test.cgi
use strict;
use warnings;
use CGI;
use CGI::Carp 'fatalsToBrowser';
use LWP::UserAgent;

my $q = CGI->new();
my $query = 'cmd=_notify-validate;'.$q->query_string;
$query =~ s/;/&/g;

my $PP_server = 'ipnpb.sandbox.paypal.com'; # sandbox IP:173.0.82.66
my $url = 'https://'.$PP_server.'/cgi-bin/webscr';

my $ua = LWP::UserAgent->new(
  ssl_opts => { 
    keep_alive      => 1, 
    verify_hostname => 1,
    SSL_version     => 'SSLv23:!TLSv12', 
  }
);

my $req = HTTP::Request->new('POST',$url);
$req->content_type('application/x-www-form-urlencoded');
$req->header(Host => $PP_server);
$req->content($query);

my $msg;
my $res = $ua->request($req);
if ($res->is_success) {
  $msg = "SUCCESS : ".$res->decoded_content;
} else {
  $msg = "ERROR : ".$res->status_line;
}

print "Content-Type: text/plain\n\n";
printf "REQUEST\n%s\n",$req->as_string;
printf "RESPONSE\n%s\n",$msg;

[download]

If you want to run as a cgi you can use this html form to provide parameters

<html>
<head></head>
<body><h1>Paypal IPN Test</h1>
<form action="ipn_test.cgi" method="post">
item_name : <input type="text" name="item_name" value="f1"/><br/>
item_number : <input type="text" name="item_number" value="f2"/><br/>
payment_status : <input type="text" name="payment_status" value="f3"/>
+<br/>
mc_gross : <input type="text" name="mc_gross" value="f4"/><br/>
mc_currency : <input type="text" name="mc_currency" value="f5"/><br/>
txn_id : <input type="text" name="txn_id" value="f6"/><br/>
receiver_email : <input type="text" name="receiver_email" value="f7"/>
+<br/>
payer_email : <input type="text" name="payer_email" value="f8"/><br/>
<input type=submit value="submit form">
</form>
</body>
</html>

[download]
HTH
poj

In reply to Re^3: PayPal IPN Script End of script output before headers: by poj
in thread PayPal IPN Script End of script output before headers: by *alexandre*

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