class Rack::Auth::Digest::Request

def correct_uri?
  request.fullpath == uri
end

def digest?
  "digest" == scheme
end

def method
  @env[RACK_METHODOVERRIDE_ORIGINAL_METHOD] || @env[REQUEST_METHOD]
end

def method_missing(sym, *args)
  return super unless params.has_key?(key = sym.to_s)
  return params[key] if args.size == 0
  raise ArgumentError, "wrong number of arguments (#{args.size} for 0)"
end

def nonce
  @nonce ||= Nonce.parse(params['nonce'])
end

def params
  @params ||= Params.parse(parts.last)
end

def respond_to?(sym, *)
  super or params.has_key? sym.to_s
end