client.check_connection() cant work

[kindergartenlaoda]

I tried "client_reconnect",when I shutdown the server after opc connected, loop did not stop, there is no exception throw

try:
async with client:
_logger.warning("Connected")
subscription = await client.create_subscription(500, handler)
node = (client.get_node(ua.ObjectIds.Server_ServerStatus_CurrentTime),)
await subscription.subscribe_data_change(node)
while True:
await asyncio.sleep(1)
await client.check_connection() # Throws a exception if connection is lost
except (ConnectionError, ua.UaError):
_logger.warning("Reconnecting in 2 seconds")
await asyncio.sleep(2)