http://www.perlmonks.org?node_id=1212415


in reply to How to pass credentials through REST::Client

See https://metacpan.org/pod/LWP::UserAgent#get_basic_credentials, https://metacpan.org/pod/LWP::UserAgent#credentials 

$client->getUseragent()->credentials("www.example.com:80", "Some Realm
+", "foo", "secret");

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Also http://search.cpan.org/perldoc/REST::Client#pkcs12

In Section Seekers of Perl Wisdom