您的会话并不会保持活跃状态，等待您以后回来；当到云实例的连接终止时，会话就结束了。

Your session does not magically remain active for you to return later; when your connection to the cloud instance ends, your session ends.

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XMPP网关允许终止一个给定的客户端到服务器的会话，并且向目标端点协议发起一个新的会话(同时进行必要的协议转换)。

The XMPP gateway permits the termination of a given client-to-server session and the initiation of a new session to the target endpoint protocol (along with the necessary protocol translation).

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清理可能包括终止会话、取消计时器、取消回调处理程序或清理可能需要的任何数据结构。

This can include invalidating sessions, canceling timers, canceling callback handlers or cleaning up any data structures that may need it.

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