Interactive MQTT packet manipulation shell based on IPython

You would love it if your are an expert of MQTT and Python

Installing

pip install imqtt

or installing from source code

python setup.py install

Working as a client

Enter IMQTT shell

$ imqtt

Build a TCP Client and connect to mqtt server

In [1]: c = TCPClient(host = '127.0.0.1', port = 1883)
('connected to', '127.0.0.1', 1883)

Send a MQTT Connect Packet

In [2]: p = ConnectPacket()

In [3]: c.Send(p)
Out[3]: <__main__.TCPClient instance at 0x215c518>

Recv the Connack Packet

In [4]: ack = c.Recv()

In [5]: ack
Out[5]: <ConnackPacket <FixedHeader ControlPacketType: 0x2, ControlPacketFlags: 0, RemainingLength: 2>, Flags: 0x1, ReturnCode: 0x0>

Publish a message

In [6]: pp = PublishPacket(Topic = '/imqtt/test', Payload = 'Hello world', QoS = 1, PacketID = 1)

In [7]: pp
Out[7]: <PublishPacket <FixedHeader ControlPacketType: 0x3, ControlPacketFlags: 0, RemainingLength: 0>, Dup: 0, QoS: 1, Retain: 0, PacketID: 1, Topic: /imqtt/test, Payload: Hello world>

In [8]: c.Send(pp).Recv()
Out[8]: <PubackPacket <FixedHeader ControlPacketType: 0x4, ControlPacketFlags: 0, RemainingLength: 2>, PacketID: 1>

Working in server mode (version 0.2.2)

Lisen and serve

Welcome to imqtt !
An iteractive MQTT packet manipulation shell based on IPython.
Github: https://github.com/shafreeck/imqtt

In [1]: s = TCPServer(host = '127.0.0.1', port = 1883)
listening on 127.0.0.1 1883

In [2]: s.Serve()

It will break and enter the interactive shell when received a packet

Packet received

This is an interactive environment, and being triggered when there was a packet received.
There are some varibles you can use:
 self: the tcp server object
 buf : current data received
 p   : the packet that unmarshaled from buf
Also, all python features are avaliable. Type 'exit()' or press 'Ctrl-D' to quit the shell.

Inspect the received packet and send ack back

In [1]: p
Out[1]: <ConnectPacket <FixedHeader ControlPacketType: 0x1, ControlPacketFlags: 0, RemainingLength: 17>,  Protocol: bytearray(b'MQTT'), Version: 4, <Flags UsernameFlag: 0, PasswordFlag: 0, WillRetain: 0, WillQoS: 0, WillFlag: 0, CleanSession: 1>, KeepAlive: 300, ClientID: bytearray(b'imqtt'), Username: , Password: >

In [2]: self.Send(ConnackPacket())
Out[2]: <imqtt.TCPServer at 0x10b890e10>

Exit the shell and continue to serve

In [3]: exit()
Continue to serve...