Struct ClientSession 

pub(super) struct ClientSession {
    pub _user_name: String,
    pub _user_role: UserRole,
    pub active_connection: Option<(Sender<TcpServerMessage>, u64)>,
    pub subscriptions: Vec<(SubscribeTopic, UpdateMode)>,
}

Represents an authenticated user session within the server.

A session persists even if the physical connection drops, allowing clients to seamlessly reconnect and resume their subscriptions and privileges without logging in again.

Fields

_user_name: String

The display name of the authenticated user.

_user_role: UserRole

The permission level and operational scope assigned to this user.

active_connection: Option<(Sender<TcpServerMessage>, u64)>

The active communication channel to the client, if currently connected. Stores the mpsc::Sender for dispatching network messages and the physical ConnectionID.

subscriptions: Vec<(SubscribeTopic, UpdateMode)>

A list of engine state topics this session is currently subscribed to.