Asynchronous MQTT client for 3.1.1 protocol version.
Project description
About
Asynchronous MQTT client for 3.1.1 protocol version.
Installation
Recommended way (via pip):
$ pip install aio-mqtt
Example
Simple echo client:
import asyncio as aio
from aio_mqtt import (
QOSLevel,
PublishableMessage,
MQTTClient,
MQTTClientError,
MQTTClientChannelClosedError
)
async def handle_disconnects(client: MQTTClient) -> None:
while True:
try:
await client.wait_disconnecting()
except MQTTClientError:
# Handle unusual disconnects here
return
else:
# Gracefully disconnected
break
async def main(client: MQTTClient) -> None:
try:
await client.connect('localhost')
except MQTTClientError:
# Handle connection errors here
return
try:
await client.subscribe(('in', QOSLevel.QOS_1))
except MQTTClientError:
# Handle subscription errors here
return
while True:
try:
message = await client.receive_message()
except MQTTClientChannelClosedError:
return
try:
await client.publish(PublishableMessage(topic_name='out', payload=message.payload, qos=QOSLevel.QOS_1))
except MQTTClientError:
return
if __name__ == '__main__':
loop = aio.new_event_loop()
client = MQTTClient()
try:
loop.run_until_complete(aio.gather(handle_disconnects(client), main(client)))
except KeyboardInterrupt:
pass
finally:
loop.run_until_complete(client.disconnect())
loop.close()
License
Copyright 2019 Not Just A Toy Corp.
Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.