Weird net/ftp behavior

probe.rb

require 'net/ftp'

ftp_root = "tgftp.nws.noaa.gov"

# Im running conn_test with arbitrary values for n
def conn_test(root, n)
  (1..n).to_a.each do |i|
    ftp = Net::FTP.new root
    begin
      ftp.passive
      ftp.debug_mode
      ftp.login
    rescue
      puts "That was that"
      puts i
    end
  end
end