Python MQTT publisher doesn't publish

Question

Trying to publish some data from a raspberry pi, but nothing gets through. However, publishing via MQTT.fx works fine. This is my python script:

import paho.mqtt.client as mqtt
import paho.mqtt.publish as publish

publish.single("example_topic", payload="example message", qos=0, retain=False,\
         hostname="example.com",port=8883, client_id="random_number", \
        keepalive=60, will=None,auth = {'username':"example_username",\
         'password':"example_password"}, tls=None, protocol=mqtt.MQTTv311, transport="tcp")

This might be important to know: In MQTT.fx I wasn't able to connect without navigating to "SSL/TLS", making a cross next to "Enable SSL/TLS" and then making a cross next to "CA signed server certificate".

Can someone tell me what I'm doing wrong? :)

Answer 1

You seem to be mixing different things up here. The publish.single doesn't need any of the mqtt.Client() stuff. It is designed to to EVERYTHING in a single function call.

publish.single() takes options for everything. The docs are here

import paho.mqtt.publish as publish

publish.single(topic, payload=None, qos=0, retain=False, hostname="localhost",
        port=1883, client_id="", keepalive=60, will=None, 
        auth={username:"user", password:"pass"}, tls=None,
        protocol=mqtt.MQTTv311, transport="tcp")