Method subscribe

packages/server/src/ws/connection.ts:637–641

(sid: string)

  }

  private subscribe(sid: string): void {
    if (this.subscriptions.has(sid)) return;
    this.subscriptions.add(sid);
    this.sessionClients.subscribe(this, sid);
  }

  private unsubscribe(sid: string): void {
    if (!this.subscriptions.has(sid)) return;