How to bind user data from http and soketio protocols?

Question

Python

Hello. There is a web server aiohttp. It has a handler function that authenticates the client (I think it doesn't matter how) and renders the page. The js file of this page starts the websocket. I want to associate the client name from the handler with its sid, but I don't understand how to do it. The python-socketio docs says:

The connect event is the ideal place to perform user authentication, and any necessary mapping between the user objects in the application and the sid that has been assigned to the client. The environ argument is a dictionary in standard WSGI format containing request information, including HTTP headers.

But this does not bring me closer to the solution, because the handler and connect work completely independently of each other ... tell me which way to dig?)

Answer 1

Cookies.

Answer 2

So far, I have not figured out how to get the session object in the connect function and whether I need it at all. For now, I'll probably get by with getting the name from the encrypted aiohttp session:

@sio.event
async def connect(sid, environ):
    obj = ast.literal_eval(authenticate_user(environ))
    username = obj['session']['username']
    await sio.save_session(sid, {'username': username})
    print("connect ", sid, username)


def authenticate_user(environ):
    cookies = environ['HTTP_COOKIE'].split(';')
    regexp = ' \s*AIOHTTP_SESSION='
    for i in cookies:
        if re.match(regexp, i):
            AIOHTTP_SESSION =re.split(regexp, i)[-1]
    f = fernet.Fernet(fernet_key)
    return f.decrypt(bytes(AIOHTTP_SESSION, 'utf-8')).decode('utf-8')