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当我运行调用 UserPrincipal.GetGroups 的简单控制台应用程序时，它会毫无问题地枚举用户组。但是，当我在同一服务器上但从托管 WCF 的 Windows 服务运行与同一用户相同的代码时，我得到以下错误链：

Message : The socket transfer timed out after 00:00:10. You have exceeded the timeout set on your binding. The time allotted to this operation may have been a portion of a longer timeout.

    Inner Exception
    ---------------
    Message : The read operation failed, see inner exception.

                                Inner Exception
                                ---------------
                                Message : The socket transfer timed out after 00:00:10. You have exceeded the timeout set on your binding. The time allotted to this operation may have been a portion of a longer timeout.

                                   Inner Exception
                                   ---------------
                                   Message : A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

这可能与 WCF 线程模拟有关吗？ WindowsIdentity.GetCurrent().Name返回相同的用户，但Thread.CurrentPrincipal.Identity.Name不同 - 在控制台应用程序的情况下为空字符串，但在 Windoes 服务的情况下是模拟的 WCF 用户。

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