counter.rb

require 'sinatra'
# tiny counter bot

$count = 0

get '/' do
  $count+=1
  puts $count
  $count.to_s
end

humanwebserver.rb

require 'sinatra'
require 'timeout'
require 'readline'

$limit = ARGV.first.to_i || 2

get '/' do
  input
end

def input
  timeout($limit) do
    p [Time.now, Time.now + $limit]
    Readline.readline("> ", true)
  end
rescue Timeout::Error
  puts "timeout"
  ''
end