Rescue Socket error

gistfile1.txt

[14] pry(main)> A.new 'irc.freenode.net', 6667
=> #<A:0x000000034889a8 @sock=#<TCPSocket:fd 8>>


[20] pry(main)> A.new 'localhost', 1233
Errno::ECONNREFUSED: Connection refused - connect(2) for "localhost" port 1233
from (pry):6:in `initialize'


[27] pry(main)> A.new 'localhostasdf', 1233
Invalid host or port!
=> #<A:0x00000003263c18>

socket.rb

class A
  attr_accessor :sock
  def initialize(host, port)
    @host = host
    @port = port
    begin
      @sock = TCPSocket.new host, port
    rescue SocketError  
      puts "Invalid host or port!"
    end
  end  
end