def _encode_data(self):
buffer = bytearray()
# variable header
buffer.extend(MQTTUtils.encode_string(self.protocol_name))
buffer.append(MQTTUtils.encode_byte(self.protocol_version))
connect_flags = 0x00
connect_flags |= 0x80 if self.has_username else 0x00
connect_flags |= 0x40 if self.has_passwd else 0x00
connect_flags |= 0x20 if self.will_retain else 0x00
connect_flags |= ((self.will_qos or 0x00) << 3) & 0x18
connect_flags |= 0x04 if self.will_flag else 0x00
connect_flags |= 0x02 if self.clean_session else 0x00
buffer.append(connect_flags)
buffer.extend(MQTTUtils.encode_value(self.keep_alive))
# payload
buffer.extend(MQTTUtils.encode_string(self.client_uid))
if self.will_flag:
buffer.extend(MQTTUtils.encode_string(self.will_topic))
buffer.extend(MQTTUtils.encode_string(self.will_message))
if self.has_username:
buffer.extend(MQTTUtils.encode_string(self.username))
if self.has_passwd:
buffer.extend(MQTTUtils.encode_string(self.passwd))
return bytes(buffer)
def _encode_data(self):
buffer = bytearray()
buffer.extend(MQTTUtils.encode_value(self.id))
for intent in self.subscription_intents:
topic, qos = intent
buffer.extend(MQTTUtils.encode_string(topic))
buffer.append(MQTTUtils.encode_byte(qos) & self.QOS_PART_MASK)
return bytes(buffer)
def _encode_data(self):
buffer = bytearray()
sp = self.SESSION_PRESENT if self.session_present else 0x00
buffer.append(MQTTUtils.encode_byte(sp))
buffer.append(MQTTUtils.encode_byte(self.return_code))
return bytes(buffer)