I saw that looking through the libwww-perl mailing list archives, here's what they look like: 
$ua->credentials(<
  'servername:portnumber',
  'realm-name',
  'username' => 'password'
);

[download]
NOTE: You have to specify the port number above!

In reply to Re: Re: Re: http POST + authentication by Grateful_Dude
in thread http POST + authentication by Grateful_Dude

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