Can't connect to websocket with 2 client

I am trying to build a websocket. In this websocket i have two operation. İf client send me "orderbook" input, i am returning data from redis - (channel-1). If client send me "ticker" input, i am returning data from redis - (channel-2).

I can use this websocket but it's not working when one operation is online. For example if i connected with "ticker" input it's ok. But after that i cant get any operations with my websocket. I want the use 2 operation in same time or same operation in same time. But it's only working with 1 operation.

This is my websocket script

import asyncio import json import websockets import redis import yaml

with open('config.yaml') as f:
    config = yaml.load(f, Loader=yaml.FullLoader)

r = redis.Redis(host=config["redis_host"], port=config["redis_port"], db=0, password=config["redis_password"])
rr = redis.Redis(host=config["redis_host"], port=config["redis_port"], db=0, password=config["redis_password"])

p = r.pubsub()
pp = rr.pubsub()

p.subscribe(config["redis_channel_name_orderbook"])
pp.subscribe(config["redis_channel_name_ticker"])


async def hello(websocket):
    data = await websocket.recv()

    if data == "orderbook":
        while True:
            message = p.get_message()

            if message:
                if type(message["data"]) == bytes:
                    message["data"] = bytes.decode(message["data"])

                message = json.dumps(message["data"])
                await websocket.send(message)

    elif data == "ticker":
        while True:
            message = pp.get_message()

            if message:
                if type(message["data"]) == bytes:
                    message["data"] = bytes.decode(message["data"])

                # message = json.dumps(message["data"])
                await websocket.send(message["data"])


async def main():
    async with websockets.serve(hello, config["redis_host"], config["websocket_port"]):
        await asyncio.Future()  # run forever


if __name__ == "__main__":
    asyncio.run(main())

What could be wrong with this script ?