How to tell WWW::Mechanize to work with HTTPS proxy? I have this code:

use WWW::Mechanize;

print "WWW::Mechanize: ", $WWW::Mechanize::VERSION, "\n";
print "LWP : ", $LWP::UserAgent::VERSION, "\n";

my $mech = WWW::Mechanize->new();

$mech->proxy( [ 'http', 'https' ], "https://204.228.129.46:8080/" );

$mech->add_handler("request_send",  sub { shift->dump; return });
$mech->add_handler("response_done", sub { shift->dump; return });

$mech->get("http://people.iu.edu/");
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and below is result I have:

WWW::Mechanize: 1.73
LWP : 6.06
GET http://people.iu.edu/
Accept-Encoding: gzip
User-Agent: WWW-Mechanize/1.73

(no content)
500 Can't connect to 204.228.129.46:8080
Content-Type: text/plain
Client-Date: Sat, 31 May 2014 02:26:15 GMT
Client-Warning: Internal response

Can't connect to 204.228.129.46:8080\n
LWP::Protocol::https::Socket: SSL connect attempt failed with unknown 
+error SSL wants a read first at c:/Perl/site/lib/LWP/Protocol/http.pm
+ line 41.\n
Error GETing http://people.iu.edu/: Can't connect to 204.228.129.46:80
+80
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If the proxy is HTTP based I have no errors...t connect to 204.228.129.46:8080 Content-Type: text/plain Client-Date: Sat, 31 May 2014 02:26:15 GMT Client-Warning: Internal response Can