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Add MQTT connection error handling

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Mike Wilkinson 2019-05-14 08:34:14 -04:00 committed by GitHub
parent e791d6646b
commit 874e9085a7
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1 changed files with 12 additions and 1 deletions
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11
detect_objects.py
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@ -25,6 +25,17 @@ def main():
# connect to mqtt and setup last will
def on_connect(client, userdata, flags, rc):
print("On connect called")
if rc != 0:
if rc == 3:
print ("MQTT Server unavailable")
elif rc == 4:
print ("MQTT Bad username or password")
elif rc == 5:
print ("MQTT Not authorized")
else:
print ("Unable to connect to MQTT: Connection refused. Error code: " + str(rc))
elif rc == 0:
print ("Connection to MQTT established.")
# publish a message to signal that the service is running
client.publish(MQTT_TOPIC_PREFIX+'/available', 'online', retain=True)
client = mqtt.Client()