Srikanth Jeeva's technical Blog

require 'base64' puts Base64.decode64("aG1hYw==").chomp => hmac puts Base64.encode64("hmac").chomp => aG1hYw==

require 'rubygems' require 'active_merchant' # Use the TrustCommerce test servers ActiveMerchant::Billing::Base.mode = :test # ActiveMerchant accepts all amounts as Integer values in cents # $10.00 amount = 1000 # The card verification value is also known as CVV2, CVC2, or CID credit_card = ActiveMerchant::Billing::CreditCard.new( :first_name => 'Bob', :last_name => 'Bobsen', :number => '349298720353895', :month => '8', :year => '2012', :verification_value => '1234' ) puts credit_card.valid?

require 'socket' def local_ip orig, Socket.do_not_reverse_lookup = Socket.do_not_reverse_lookup, true # turn off reverse DNS resolution temporarily UDPSocket.open do |s| s.connect '64.233.187.99', 1 s.addr.last end ensure Socket.do_not_reverse_lookup = orig end p= local_ip puts p