...telephone.com SIP/2.0 Require: 100rel UAS->UAC: SIP/2.0 420 Bad Extension Unsupported: 100rel 这个特性(Unsupported)是为了保证客户-服务端都能够无阻碍的交互,除非是options对方不支持(就像上边的例子说明的一样)。
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但是一定要小心对待这个特性。
清单2显示了实现这个特性的代码。
但是,要当心不要滥用这个特性。
The word "property" is really important to connect the concept of property with something fundamental in the make-up, in the constitution.
特性这个词真的很重要,将特性的概念和,组成和构造里主要的部分联系起来。
It's like a fourth asset but we're using a special feature of this asset: that it has no risk.
如同第四种资产,我们将利用这个资产的特性:,即无风险特性。
But there's actually hidden in there an important element, and that is, when I create an instance, I have to be able to get access to the things that characterize that instance.
也就是,当我创建了一个实例,我应该能够获得那些特性化,这个实例的东西,我的意思不是说它们是想法,或者情绪之类的。
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