jruby-1.7.19 :001 > require "socket"
=> true
jruby-1.7.19 :002 > Socket::Option.bool(:INET, :SOCKET, :KEEPALIVE,true)
ArgumentError: wrong number of arguments calling bool (4 for 1)
from (irb):2:in evaluate' from org/jruby/RubyKernel.java:1107:ineval'
from org/jruby/RubyKernel.java:1507:in loop' from org/jruby/RubyKernel.java:1270:incatch'
from org/jruby/RubyKernel.java:1270:in catch' from /usr/local/rvm/rubies/jruby-1.7.19/bin/irb:13:in(root)'