use Rack::Session::Cookie
run lambda { |env|
request = Rack::Request.new env
response = Rack::Response.new
params = request.params
session = env['rack.session']
response.body = case request.path_info
when '/'
"You said #{ params['say'] || 'nothing' }"
when '/print-method'
request.request_method.downcase
when '/print-session'
session['session_variable'] = params['session_variable'] if params['session_variable']
session['session_variable']
when '/redirect'
response.headers['Location'] = params['to']
response.status = 302 # manually set!
''
when '/relative'
response.headers['Location'] = '/i_am_relative'
response.status = 302 # manually set!
''
when '/some_text'
"hello there, how goes it?"
when '/some_html'
%q{
}
else
"DON'T KNOW HOWTO RESPOND TO PATH: #{ request.path_info }"
end.to_s
response.finish
}