kopia lustrzana https://github.com/Yakifo/amqtt
78 wiersze
1.9 KiB
Python
78 wiersze
1.9 KiB
Python
# Copyright (c) 2015 Nicolas JOUANIN
|
|
#
|
|
# See the file license.txt for copying permission.
|
|
from enum import Enum
|
|
|
|
class MessageType(Enum):
|
|
RESERVED_0 = 0
|
|
CONNECT = 1
|
|
CONNACK = 2
|
|
PUBLISH = 3
|
|
PUBACK = 4
|
|
PUBREC = 5
|
|
PUBREL = 6
|
|
PUBCOMP = 7
|
|
SUBSCRIBE = 8
|
|
SUBACK = 9
|
|
UNSUBSCRIBE = 10
|
|
UNSUBACK = 11
|
|
PINGREQ = 12
|
|
PINGRESP = 13
|
|
DISCONNECT = 14
|
|
RESERVED_15 = 15
|
|
|
|
|
|
def get_message_type(byte):
|
|
return MessageType(byte)
|
|
|
|
class MQTTHeader:
|
|
def __init__(self, msg_type, flags, length):
|
|
if isinstance(msg_type, int):
|
|
enum_type = msg_type
|
|
else:
|
|
enum_type = get_message_type(msg_type)
|
|
self.message_type = enum_type
|
|
self.remaining_length = length
|
|
self.flags = flags
|
|
|
|
class MQTTMessage:
|
|
def __init__(self, header: MQTTHeader):
|
|
# MQTT header
|
|
self.mqtt_header = header
|
|
|
|
class ConnectMessage(MQTTMessage):
|
|
def __init__(self, header: MQTTHeader, proto_name, proto_level, flags, keep_alive):
|
|
super().__init__(header)
|
|
|
|
# Connect header
|
|
self.proto_name = proto_name
|
|
self.proto_level = proto_level
|
|
self.flags = flags
|
|
self.keep_alive = keep_alive
|
|
self.client_id = None
|
|
self.will_topic = None
|
|
self.will_message = None
|
|
self.user_name = None
|
|
self.password = None
|
|
|
|
def is_user_name_flag(self):
|
|
return True if (self.flags & 0x80) else False
|
|
|
|
def is_password_flag(self):
|
|
return True if (self.flags & 0x40) else False
|
|
|
|
def is_will_retain(self):
|
|
return True if (self.flags & 0x20) else False
|
|
|
|
def is_will_flag(self):
|
|
return True if (self.flags & 0x04) else False
|
|
|
|
def is_clean_session(self):
|
|
return True if (self.flags & 0x02) else False
|
|
|
|
def is_reserved_flag(self):
|
|
return True if (self.flags & 0x01) else False
|
|
|
|
def will_qos(self):
|
|
return (self.flags & 0x18) >> 3
|