This code does not work! Please help! Is XMLRPC or SOAP4R better for the initial talking to MOBY.

require 'rubygems'
require 'soap/rpc/driver'
require 'xmlrpc/client'                      

class Foo
end

module Bio
  module Moby
    module Client
      class Central
        
        URI = 'http://biomoby.org/MOBY/Central'

        def initialize
          mobycentral,ontologyser = getDefaultCentral   
          p mobycentral
          p ontologyser
          @driver = SOAP::RPC::Driver.new(mobycentral,URI)
          @driver.wiredump_dev = STDOUT
          @driver2 = XMLRPC::Client.new2(URI) 

          begin
            p @driver2.call('retrieveServiceNames')
          rescue RuntimeError => e
            puts "error #{e.inspect}"
          end

          @driver.add_method_with_soapaction(
            "findService",
            "http://biomoby.org/MOBY/Central#findService",
            "args"
          )

        end

        def getDefaultCentral
           
          require 'httpclient'

          client = HTTPClient.new
          mobycentral = client.head('http://biomoby.org/mobycentral').header['location']
          ontologyser = client.head('http://biomoby.org/ontologyserver').header['location']
          return mobycentral,ontologyser
        end
        
        def findService(keyword)
           message = "<findservice>\n"
           message += "<authoritative></authoritative>"
           message += "<serviceName>#{keyword}</serviceName>"
           message += "<expandObjects>0</expandObjects>"
           message += "<expandServices>0</expandServices>"
           message += "</findservice>"
           #@driver.findService(message)
           p @driver2.call('findService',message)
        end

      end
    end
  end
end
                   
Bio::Moby::Client::Central.new.findService('getGoTerm')