Example Sinatra rack-cas app

config.ru

# Run with command:
# CAS_SERVER="http://example.com/login" rackup

require 'sinatra/base'
require 'rack/cas'
require 'yaml'

class SinatraRackCASExample < Sinatra::Base
  before do
    unless session['cas'] && session['cas']['user']
      halt 401, 'Unauthorized'
    end
  end

  get '/' do
    "Hi #{session['cas']['user']}. You're logged in."
  end
end

use Rack::Session::Cookie, key: 'rack.session', path: '/', secret: 'ca1257a7e2ede894900c5a4fb4a9abb40bb4fcbfb08d31bd67522363fba1ff925b5c5101ca9fc69d45b381a3c15ac5e1a854e86de23c789e6b99765cdb3a2451'
use Rack::CAS, server_url: ENV['CAS_SERVER']
run SinatraRackCASExample

@jostockley Add require "rack-cas" before require "rack/cas" to fix.