OnRemoveClient

    /// <summary>
    /// 当服务器判定客户端为断线或连接异常时，移除客户端时调用
    /// </summary>
    /// <param name="client">要移除的客户端</param>
    protected virtual void OnRemoveClient(Player client) 
    { Debug.Log($"[{client.PlayerID}]断开连接...!"); }