sinatra_test.rb

#! /usr/bin/env ruby
# coding: utf-8

require 'webrick'
require 'Win32API'
require 'rubygems'
require 'rack'
require 'sinatra'

set :run, false

get '/' do
  'Hello, Sinatra [<a href="/server/quit">quit</a>]'
end

Rack::Handler::WEBrick.run Sinatra::Application, :Port=>0 do |server|
  trap :INT do
    server.shutdown
  end

  get '/server/quit' do
    server.stop
    'sinatra_test is going to be shutdown...'
  end

  shell_execute = Win32API.new('shell32.dll', 'ShellExecuteA', %w(p p p p p i), 'i')
  shell_execute.call(0, 'open', "http://localhost:#{server[:Port]}", 0, 0, 1)
end