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Writing an XML-RPC Client (written by John-Mason Shackelford)
CodeExpectedActual
require 'xmlrpc/client'
server = XMLRPC::Client.new2('http://betty.userland.com/RPC2')
server.call('examples.getStateName', 5)
 "California" "California" 
begin
  server.call('noSuchMethod')
rescue XMLRPC::FaultException => e
  puts "Error: fault code #{e.faultCode}"
  puts e.faultString
end
 
Error: fault code 7
Can't evaluate the expression because the name "noSuchMethod" hasn't been defined.
 
Error: fault code 7
Can't evaluate the expression because the name "noSuchMethod" hasn't been defined.
 
def lookup_upc(upc)
  server = XMLRPC::Client.new2('http://www.upcdatabase.com/rpc')
  begin
    response = server.call('lookupUPC', upc)   
    return response['found'] ? response : nil
  rescue XMLRPC::FaultException => e
    puts "Error: "
    puts e.faultCode
    puts e.faultString
  end
end
product = lookup_upc('018787765654')
product['description']
 "Dr Bronner's Peppermint Oil Soap" "Dr Bronner's Peppermint Oil Soap" 
product['size']
 "128 fl oz" "128 fl oz" 
lookup_upc('no such UPC')
 nil nil