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require 'uri'
require 'net/http'
require 'rack'
require 'capybara/util/timeout'
module Capybara
class Server
class Identify
def initialize(app)
@app = app
end
def call(env)
if env["PATH_INFO"] == "/__identify__"
[200, {}, [@app.object_id.to_s]]
else
@app.call(env)
end
end
end
class << self
def ports
@ports ||= {}
end
end
attr_reader :app, :port
def initialize(app)
@app = app
end
def host
"127.0.0.1"
end
def url(path)
if path =~ /^http/
path
else
(Capybara.app_host || "http://#{host}:#{port}") + path.to_s
end
end
def responsive?
res = Net::HTTP.start(host, @port) { |http| http.get('/__identify__') }
if res.is_a?(Net::HTTPSuccess) or res.is_a?(Net::HTTPRedirection)
return res.body == @app.object_id.to_s
end
rescue Errno::ECONNREFUSED, Errno::EBADF
return false
end
def boot
if @app
@port = Capybara::Server.ports[@app.object_id]
if not @port or not responsive?
@port = Capybara.server_port || find_available_port
Capybara::Server.ports[@app.object_id] = @port
Thread.new do
Capybara.server.call(Identify.new(@app), @port)
end
Capybara.timeout(Capybara.server_boot_timeout) do
if responsive? then true else sleep(0.5) and false end
end
end
end
rescue TimeoutError
puts "Rack application timed out during boot"
exit
else
self
end
private
def find_available_port
server = TCPServer.new('127.0.0.1', 0)
server.addr[1]
ensure
server.close if server
end
end
end
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