RTM client stops listening after a while #458
Description
Description
After a random amount of time, the RTM stops listening to slack events. I can see asyncio errors in the console, however no errors are actually thrown.
Fatal read error on socket transport
protocol: <asyncio.sslproto.SSLProtocol object at 0x1045e4278>
transport: <_SelectorSocketTransport fd=10 read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/selector_events.py", line 801, in _read_ready__data_received
data = self._sock.recv(self.max_size)
OSError: [Errno 65] No route to host
Not sure if this is a bug in asyncio, but anyway my RTM client stops listening to slack and becomes a zombie as no error is actually thrown. I also could not figure out how to read the log.
What type of issue is this? (place an x in one of the [ ])
- bug
- enhancement (feature request)
- question
- documentation related
- testing related
- discussion
Requirements (place an x in each of the [ ])
- I've read and understood the Contributing guidelines and have done my best effort to follow them.
- I've read and agree to the Code of Conduct.
- I've searched for any related issues and avoided creating a duplicate issue.
Reproducible in:
slackclient version: 2
python version: 3.7
OS version(s): Mac OS X Mojave
Steps to reproduce:
- Start an RTM client with
run_async=True - Wait a few minutes
- The client stops listening to slack
Expected result:
RTM events are triggered by slack messages
Actual result:
Nothing happens when a message is sent, errors are shown in the log
Attachments:
A sample code that runs a loop in parallel to an RTM client which reproduces the issue:
import slack
import time
import asyncio
import concurrent
from datetime import datetime
@slack.RTMClient.run_on(event='message')
async def say_hello(**payload):
data = payload['data']
print(data.get('text'))
def sync_loop():
while True:
print("Hi there: ", datetime.now())
time.sleep(5)
async def slack_main():
executor = concurrent.futures.ThreadPoolExecutor(max_workers=1)
loop = asyncio.get_event_loop()
rtm_client = None
try:
rtm_client = slack.RTMClient(token='token', run_async=True, loop=loop, timeout=300, auto_reconnect=True)
await asyncio.gather(
loop.run_in_executor(executor, sync_loop),
rtm_client.start()
)
except asyncio.TimeoutError:
rtm_client.stop()
except Exception as e:
pass
# Never gets here
if __name__ == "__main__":
asyncio.run(slack_main())