c = CoAP(type='ACK', code='2.01 Created', token='ab', msg_id=0, options=[('Location-Path', 'storage'),(92, b'\xCA\xFE'), (92, b'\xBE\xAF\xBE\xAF\xBE\xAF\xBE\xAF\xBE\xAF\xBE\xAF\xBE\xAF\xBE\xAF\xBE\xAF\xBE\xAF')], paymark=b'\xff')
c = CoAP(type='ACK', code='2.01 Created', msg_id=0, options=[('Location-Path', 'storage')], paymark=b'\xff')