问如何从SignalR引用/返回值？

EN

from signalr_aio import Connection

if __name__ == "__main__":
    # Create connection
    # Users can optionally pass a session object to the client, e.g a cfscrape session to bypass cloudflare.

    connection = Connection('https://beta.bittrex.com/signalr', session=None)
    hub = connection.register_hub('c2')

    hub.server.invoke('GetAuthContext', API_KEY)               #Invoke 0 Creates the challenge that needs to be signed by the create_signature coroutine
    signature = await create_signature(API_SECRET, challenge)  #Creates the signature that needs to authenticated in the Authenticate query
    hub.server.invoke('Authenticate', API_KEY, signature)      #Invoke 1 authenticates user to account level information

    connection.start()

async def on_debug(**msg):
    # In case of `queryExchangeState` or `GetAuthContext`
    if 'R' in msg and type(msg['R']) is not bool:
         # For the simplicity of the example I(1) corresponds to `Authenticate` and I(0) to `GetAuthContext`
         # Check the main body for more info.
         if msg['I'] == str(2):
            decoded_msg = await process_message(msg['R'])
            print(decoded_msg)
        elif msg['I'] == str(3):
            signature = await create_signature(API_SECRET, msg['R'])
            hub.server.invoke('Authenticate', API_KEY, signature)