MQTTClient subscriptions not working

[cmisztur]

Just curious what I'm doing wrong here. LoPY4 1.19.0.b4

I'm assuming this is the client code: https://github.com/pycom/pycom-micropython-sigfox/blob/master/esp32/frozen/Common/MQTTClient.py

I can publish but I cannot get a subscription working.
The most I see is 'Packet sent. (Length: 4)' when publishing a message through broker when LoPY4 is subscribed.

from MQTTClient import MQTTClient

l99_serial = "abc"
mqtt_client = MQTTClient(l99_serial, False, 4)
mqtt_client.setLastWill('L99/{}/io/state/offline'.format(l99_serial), QoS=1)
mqtt_client.configEndpoint('192.168.2.107', 1883)
mqtt_client.connect(180)

def mqtt_output_command_callback(ud,p=5):
    print('sub')
    print(ud)

#mqtt_client.subscribe('L99/{}/io/OUTPUT/+/+'.format(l99_serial), 1, mqtt_output_command_callback)
#mqtt_client.publish('L99/{}/io/state/online'.format(l99_serial), '', 1, False)

mqtt_client.subscribe('L99/#', 1, mqtt_output_command_callback)

[cmisztur]

Well, whatever umqtt.simple works fine.

import machine
from umqtt.simple import MQTTClient

def mqtt_output_command_callback(topic,message):
    print('sub')
    print(topic)

l99_serial = "abc"
mqtt_client = MQTTClient(l99_serial, '192.168.2.107', 1883)
mqtt_client.set_last_will('L99/{}/io/state/offline'.format(l99_serial), '', qos=1)
mqtt_client.connect()
mqtt_client.set_callback(mqtt_output_command_callback)
mqtt_client.subscribe('L99/{}/io/OUTPUT/+/+'.format(l99_serial), qos=1)
mqtt_client.publish('L99/{}/io/state/online'.format(l99_serial), '', qos=1)

while True:
    machine.idle()
    mqtt_client.check_msg()```