Connect to socket.io xhr request with python

I'm trying to retrieve some data from here, namely games and odds. I know the data is in the response of this GET request as shown in the network tab below:

However we can see that there is some websocket protocol and I'm not sure how to handle this.

I should mention I'm new to python (usually coding in R) and websockets but I've managed to find the socketio path in the code elements so here is what I've tried :

import socketio

sio = socketio.Client(logger=True, engineio_logger=True)

@sio.event
def connect():
  print('connected!')  
  sio.emit('add user', 'Testing')
  
@sio.event
def print_message(sid):
    print("Socket ID: " , sid)

@sio.event
def disconnect():
  print('disconnected!')
  
sio.connect('https://sports-eu-west-3.winamax.fr',transports=['websocket'], socketio_path = '/uof-sports-server/socket.io')
  sio.wait()

I'm able to connect but I'm not sure where to go next and get the actual response from the GET request above.

Any hints appreciated

I believe you were quite close, just need to emit events that are also known by the other side. Most of the data exchange there goes through "m" events.

I didn't test with current socketio, but according to Version compatibility table we should use v4.x here. Target Socket.IO version is probably v2.5.0, guessed from the header of bundled uof-sports-server/socket.io/socket.io.js

# /// script
# requires-python = ">=3.10"
# dependencies = [
#     "python-socketio[client]<5.0",
# ]
# ///
import socketio
import pprint
import uuid

sio = socketio.Client(
    logger=True,
    # engineio_logger=True
)
requestId = str(uuid.uuid4())

# connect & emit "m" event
@sio.event
def connect():
    print("connected!")
    data = dict(route="tournament:4", requestId=requestId)
    print("sending", data)
    sio.emit("m", data)

# wait for "m" event with matching requestId
@sio.on("m")
def m_response(data):
    if data.get("requestId") == requestId:
        pprint.pp(data.keys())
        pprint.pp([match["title"] for match in data["matches"].values()])
    sio.disconnect()

@sio.event
def disconnect():
    print("disconnected!")

sio.connect(
    url="https://sports-eu-west-3.winamax.fr",
    transports=["websocket"],
    socketio_path="/uof-sports-server/socket.io/",
)
sio.wait()

( you can use uv to resolve dependencies from script's inline metadata )

$ uv run winamax_socketio.py
Engine.IO connection established
Namespace / is connected
connected!
sending {'route': 'tournament:4', 'requestId': '6e9ee3d4-0bcb-45f4-ab6c-652379f234cb'}
Emitting event "m" [/]
Received event "m" [/]
dict_keys(['tournaments', 'matches', 'bets', 'outcomes', 'odds', 'requestId'])
['Angers - Rennes',
 'Auxerre - Montpellier',
 'Le Havre - Nantes',
 'Strasbourg - Lyon',
 'Toulouse - Brest',
 'Saint-Étienne - Paris SG',
 'Reims - Marseille',
 'Lille - Lens',
 'Monaco - Nice',
 'Marseille - Toulouse',
 'Nice - Nantes',
 'Brest - Monaco',
 'Montpellier - Le Havre',
 'Lyon - Lille',
 'Lens - Saint-Étienne',
 'Paris SG - Angers',
 'Reims - Strasbourg',
 'Rennes - Auxerre',
 "Ligue 1 McDonald's® 2024/25"]
Engine.IO connection dropped

To help with such tasks and to check communication flows against know working examples you might want to look into debugging proxies (mitmproxy, Telerik Fiddler, HTTP Toolkit, ...).