Achieve unique session based on Client id

[StanLi-ops]

Hello, I hope to achieve the following scenarios:
Client A uses Client_id:'A' to connect to the broker. Client B uses the same Client_id:'A' to connect, and the broker will disconnect the session with Client A and establish a new session with Client B.

I think it should be handled in the function handshake(). But I don't know how to close the original session in the function handshake().

[fafhrd91]

you need registry of available sessions. then you just take session for client and disconnect it