MQTT python

JessikaR

For the last two days, we had a connection problem from our python script to lynx.iotopen.se, this is the code for connection and have been working since the setup made in Juni. Is there any change made or what am I missing?

Initiate a Lynx Client

cli = Client("https://lynx.iotopen.se", api_key)

Initialize mqtt Client

mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
mqttc.tls_set()
mqttc.username_pw_set(username="token-is-used", password=api_key)
mqttc.connect("lynx.iotopen.se", 8883)

rejas

No there is no change in the backend that I'm aware of. Is it the http- or mqtt-client that fails, or both?

I'll do some tests myself as soon as I have time.

JessikaR

rejas
It's the mqtt-client, I get a timeout error on create a connection ('TimeoutError: timed out'). I have tried to update paho-mqtt package, but the same error.

rejas

I did a test here now with this code:

import paho.mqtt.client as mqtt

api_key='your key here'                                                                          

# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, reason_code, properties):
    print(f"Connected with result code {reason_code}")
    client.subscribe("6/obj/test")

def on_message(client, userdata, msg):
    print(msg.payload)

mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
mqttc.tls_set()
mqttc.username_pw_set(username="token-is-used", password=api_key)
mqttc.connect("lynx.iotopen.se", 8883)

mqttc.on_connect = on_connect
mqttc.on_message = on_message

mqttc.loop_forever()

You obviously have to change the key and the topic.

rejas

I run it with python3 test.py