redis adapter

see from socket.io-redis-adapter

1.communication method

1.1 Communication between nodes use the redis subscription model
1.2 And Multi-node layout uses nginx.see https://socket.io/zh-CN/docs/v4/reverse-proxy/#nginx or see nginx_config_test file;
This is just a simple example. For specific situations, you need to add logic to your project yourself.

error

_onpacket function no ack function reback in cluder node in the cluster