class MQTT::SN::Packet::Publish

def encode_body
  raise 'id must be an Integer' unless id.is_a?(Integer)
  [encode_flags, encode_topic_id, id, data].pack('Cnna*')
end

def parse_body(buffer)
  flags, topic_id, self.id, self.data = buffer.unpack('Cnna*')
  parse_flags(flags)
  parse_topic_id(topic_id)
end