这就是所谓的获得默认登录上下文。

This is what is referred to as getting a default login context.

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不提供用户ID和密码(默认的登录上下文)而建立连接。

Establish a connection without providing a user id and password (default login context).

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然后，将登录上下文发送到服务器以获取用户的组授权ID。

Then, the login context is sent to the server for obtaining group authorization IDs for the user.

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