[mosquitto-dev] python woes

[Carl Karsten <carl@xxxxxxxxxxxxxxxx>]

sudo apt install mosquitto

$ mosquitto -h
mosquitto version 1.5.7

shell 1:

mosquitto_sub -v -t \#

shell 2:

import paho.mqtt.client as mqtt

def show(client, userdata, message):
    print("show")

client = None

client = mqtt.Client("scoreboard")
client.connect("localhost")
client.subscribe("foo/#")
client.message_callback_add("foo/show", show)

client.loop_forever(retry_first_connection=True)

shell #3

mosquitto_pub -t foo/show -m 1

# messages show up in #1 and 2

shell 4:

import paho.mqtt.client as mqtt

client = None

client = mqtt.Client("scoreboard")
client.connect("localhost")
client.loop_start()

client.publish("foo/show","1")

Shows up in #1, and now #2 seems un responsive

--

Carl K