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So there is a field in the content object that distinguishes if it is fresh or not? I thought there was only the FreshnessPeriod, which is a relative number from the time received and a remote node cannot determine if a content object was fresh or not when
it came out of the content store.
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<div>Example:</div>
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<div>A — B — C</div>
<div>D -/</div>
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<div>Node A sends a normal (staled allowed) interest to B, who forwards it to C. Just a bit later, node D issues a “MustBeFresh” interest for the same name. Node B sees that they are different requests, so forwards the second interest to C also. </div>
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<div>Node C replies to the first interest with a stale content object. How can node B know that the content object should only go to A and not to D?</div>
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<div>Marc</div>
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<div>On Oct 15, 2014, at 8:26 AM, Junxiao Shi <<a href="mailto:shijunxiao@email.arizona.edu">shijunxiao@email.arizona.edu</a>> wrote:</div>
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<div dir="ltr">Hi Marc
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<div>Producer-generated NACK is a type of Data. It has the FreshnessPeriod field which determines how long it could be used to satisfy an Interest with Selector MustBeFresh=yes.</div>
<div>ContentProvider should set FreshnessPeriod to the duration in which it believes that the Data won't be generated.</div>
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<div>Yours, Junxiao<br>
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<div class="gmail_quote">On Wed, Oct 15, 2014 at 8:24 AM, <span dir="ltr"><<a href="mailto:Marc.Mosko@parc.com" target="_blank">Marc.Mosko@parc.com</a>></span> wrote:<br>
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<div style="word-wrap:break-word">Shouldn’t the NAK have a limited lifetime?
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<div>If I ask for /news/version=100 an the provider only has version=98, it would NACK 100. But, the provider will eventually want to publish version 100.</div>
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<div>Marc</div>
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