class Sinatra::Base

def run!(options={})
  set(options)
  handler = Rack::Handler.get(server)
  handler_name = handler.name.gsub(/.*::/, '')
  puts "== Sinatra/#{Sinatra::VERSION} has taken the stage " +
    "on #{port} for #{environment} with backup from #{handler_name}"
  handler.run self, :Host => host, :Port => port do |server|
    trap(:INT) do
      ## Use thins' hard #stop! if available, otherwise just #stop
      server.respond_to?(:stop!) ? server.stop! : server.stop
      puts "\n== Sinatra has ended his set (crowd applauds)"
    end
  end
rescue Errno::EADDRINUSE => e
  puts "== Someone is already performing on port #{port}!"
end