Failing greeter

fail_greeter.rb

this_dir = File.expand_path(File.dirname(__FILE__))
lib_dir = File.join(this_dir, 'lib')
$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)

require 'grpc'
require 'helloworld_services_pb'

def main
  user = ARGV.size > 0 ?  ARGV[0] : 'world'
  sup = Time.now.to_f
  stub = Helloworld::Greeter::Stub.new('www.example.com:2000', :this_channel_is_insecure)
  100.times do |i|
    start = Time.now.to_f
    begin
      message = stub.say_hello(Helloworld::HelloRequest.new(name: user), deadline: start+0.2).message
    rescue => e
    ensure
      puts "Excessive Running time iteration #{i}!: #{Time.now.to_f - start}, total: #{sup-Time.now.to_f}" if (Time.now.to_f - start) > 1
    end
  end
end

main