CODEWITHSUNDEEP
pythontelethonquarthypercorn
DasElias
DasElias

Reputation: 569

Telethon event handler does not work with Hypercorn

I am trying to use Quart with Hypercorn and Telethon. I have a message listener, but since I integrated Quart and Telethon, the listener does not fire any more (please see the minimal reproducible example below). Has anybody an idea why this code does not work?

I used this code as template, but it is not exactly the same usecase, as there is no update listener.

When I start the code with python3 main.py everything works correctly, but when I start with python3 -m hypercorn main:api (Windows 10) the listener doesn't work.

import os
from dotenv import load_dotenv
from telethon import TelegramClient, events, sync
import hypercorn.asyncio
from quart import Quart, request, json


# Load environment variables
load_dotenv()

# Global variables
allMessages = []

# Enable connection

api_id = os.getenv("API_ID")
api_hash = os.getenv("API_HASH")
phone_number = os.getenv("PHONE_NUMBER")
channel_username=os.getenv("CHANNEL")
client = TelegramClient('abc', api_id, api_hash)
client.start(phone_number)

# Get chat entity
chat = client.get_entity(channel_username)

# Listen for new messages
@client.on(events.NewMessage(incoming=True, chats=chat))
async def handler(event):
  message = event.message
  allMessages.insert(0, message)
  print(message.stringify())



# Web Server
api = Quart(__name__)

@api.route('/messages/json', methods=['GET'])
def route_get_messages_json():
  return "test"
    

async def main():
  await hypercorn.asyncio.serve(api, hypercorn.Config())


if __name__ == '__main__':
  client.loop.run_until_complete(main())

Moreover, I have tried to replace the bottom few lines with the snipped from this question, but unfortunately, that didn't work either.

async def main():
  await serve(api, hypercorn.config.Config())


if __name__ == '__main__':
  loop = client.loop
  asyncio.set_event_loop(loop)
  client.loop.run_until_complete(main())

Upvotes: 1

Views: 513

Answers (1)

pgjones
pgjones

Reputation: 7039

Using python3 -m hypercorn will create a new event loop, which will stop the one setup and used by the Telethon client. Whereas your python3 main.py usage will run Hypercorn in the client event loop (client.loop.run_until_complete(main())). Using python3 main.py is therefore the best option for you.

Upvotes: 1

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