nl_tokens: Start a CAS PGT callback server . PGT stands for proxy granting ticket .
pl_tokens: function PgtServer ( casURL , pgtURL , serverCertificate , serverKey , serverCA ) { var parsedURL = url . parse ( pgtURL ) ; var cas = new CAS ( { base_url : casURL , version : 2.0 , pgt_server : true , pgt_host : parsedURL . hostname , pgt_port : parsedURL . <mask> , ssl_key : serverKey , ssl_cert : serverCertificate , ssl_ca : serverCA || null } ) ; }