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require 'uri'
require 'net/http'
require 'rack'
module Capybara
class Server
class Middleware
attr_accessor :error
def initialize(app)
@app = app
end
def call(env)
if env["PATH_INFO"] == "/__identify__"
[200, {}, [@app.object_id.to_s]]
else
begin
@app.call(env)
rescue StandardError => e
@error = e unless @error
raise e
end
end
end
end
class << self
def ports
@ports ||= {}
end
end
attr_reader :app, :port
def initialize(app, port=Capybara.server_port)
@app = app
@middleware = Middleware.new(@app)
@server_thread = nil # supress warnings
@port = port
@port ||= Capybara::Server.ports[@app.object_id]
@port ||= find_available_port
end
def reset_error!
@middleware.error = nil
end
def error
@middleware.error
end
def host
Capybara.server_host || "127.0.0.1"
end
def responsive?
return false if @server_thread && @server_thread.join(0)
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
unless responsive?
Capybara::Server.ports[@app.object_id] = @port
@server_thread = Thread.new do
Capybara.server.call(@middleware, @port)
end
Timeout.timeout(60) { @server_thread.join(0.1) until responsive? }
end
rescue TimeoutError
raise "Rack application timed out during boot"
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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