[Python] How to kick the old session from websocket

async def connect(self):

self.room_group_name = self.scope["url_route"]["kwargs"]["room_name"]
pool = redis.ConnectionPool(host='localhost', port=6379, db=0)
self.redis = redis.Redis(connection_pool=pool)

logger.info("channel_name:{} / group_name {}".format(self.channel_name,self.room_group_name))
await self.channel_layer.group_add(
self.room_group_name,
self.channel_name
)
await self.accept()

for key in self.redis.keys():
if self.redis.type(key).decode() == "zset":
print("key:",key)
print("len:",len(self.redis.zrange(key,0,-1)))

async def disconnect(self, close_code):
logger.info("somehow disconnect")
await self.channel_layer.group_discard(
self.room_group_name,
self.channel_name
)


I have this script for websockt connection.

then

I am directly checking the record in redis to get the current members of chatroom.

If a user log-out and call disconnect , session is disappeared.

However If a user didn't call the disconnect function, session will be stored in redis table forver.

How can I remove the old session or set the timeout??

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