Not reattempting to connect when the first attempt failed.

[Dwyte]

main.py

import socketio
import asyncio
import logging

logging.basicConfig(level=logging.INFO)

loop = asyncio.get_event_loop()
sio = socketio.AsyncClient(logger=True, ssl_verify=False)

@sio.event
def connect():
    print("Client Connected")

@sio.event
def connect_error():
    print("Connection Failed.")

@sio.event
def disconnect():
    print("Client Disconnected")

async def main():
    await sio.connect("https://localhost:8080")

if __name__ == "__main__":
    loop.create_task(main())
    loop.run_forever()
    pass

The Log on HTTP version:

INFO:engineio.client:Attempting polling connection to http://localhost:8080/socket.io/?transport=polling&EIO=3
INFO:engineio.client:Polling connection accepted with {'sid': '6e1ffa1049c84e3b9f2d56fb58ab692b', 'upgrades': ['websocket'], 'pingTimeout': 60000, 'pingInterval': 25000}
INFO:socketio.client:Engine.IO connection established
INFO:engineio.client:Received packet MESSAGE data 0
INFO:engineio.client:Attempting WebSocket upgrade to ws://localhost:8080/socket.io/?transport=websocket&EIO=3
INFO:socketio.client:Namespace / is connected
Client Connected
INFO:engineio.client:WebSocket upgrade was successful
INFO:engineio.client:Sending packet PING data None
INFO:engineio.client:Received packet NOOP data None
INFO:engineio.client:Received packet PONG data None
INFO:engineio.client:Unexpected error decoding packet: "'int' object has no attribute 'encode'", aborting
INFO:engineio.client:Waiting for write loop task to end
INFO:engineio.client:Exiting write loop task
INFO:engineio.client:Waiting for ping loop task to end
INFO:engineio.client:Sending packet PING data None
INFO:engineio.client:PONG response has not been received, aborting
INFO:engineio.client:Exiting ping task
INFO:socketio.client:Engine.IO connection dropped
Client Disconnected
INFO:engineio.client:Exiting read loop task
INFO:socketio.client:Connection failed, new attempt in 3.26 seconds
INFO:engineio.client:Attempting polling connection to http://localhost:8080/socket.io/?transport=polling&EIO=3
INFO:engineio.client:HTTP GET request to http://localhost:8080/socket.io/?transport=polling&EIO=3&t=1591616760.6109302 failed with error Cannot connect to host localhost:8080 ssl:False [Connect call failed ('127.0.0.1', 8080)].

The log came from an HTTP python boilerplate server that I tested as well, but the real server I have is HTTPS on nodejs. Both had a similar results and logs.

Versions:

python:
python-engineio (3.13.0)
python-socketio (4.6.0)

nodejs:
socket.io 2.3.0

How to duplicate:

1. Start Server
2. Start Client
3. Halt Server and Turn it back on.

I was mimicking if the server ever fails and comes back again would the client reconnects automatically.

Only attempts once even it should be inifinite reconnection_attempts=0. I tried putting diff number like 100, still only reattempted once.

EDIT: Added more info.

[miguelgrinberg]

I believe this has been fixed, it appears you are having the same issue reported in #417. Try upgrading your python-socketio and python-engineio packages to their latest releases.