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Junxiao,
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<div class="">I doubt very much that it was your app.</div>
<div class="">We were seeing almost every node on the testbed restarting repeatedly.</div>
<div class="">Once I killed all my AWS instances the problem went away. So, it seems</div>
<div class="">to have something to do with my instances, which I had running for a long time</div>
<div class="">waiting for our SIGCOMM demo time.</div>
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<div class="">John</div>
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<div class="">On Aug 21, 2017, at 4:35 PM, Junxiao Shi <<a href="mailto:shijunxiao@email.arizona.edu" class="">shijunxiao@email.arizona.edu</a>> wrote:</div>
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<div dir="auto" class="">Hi Davide</div>
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>> ><br class="">
>> > What does this message mean?<br class="">
>> ><br class="">
>> > 1503354619.041373 FATAL: [NFD] Non-recoverable error: request timed out<br class="">
>> > code: 10060<br class="">
><br class="">
> It seems there's uncaught exception somewhere.<br class="">
> This looks like coming from ndn::nfd::Controller, and 10060 means "timeout".<br class="">
> It's probably caused by either NFD or NLSR not responding to NFD-RIB's<br class="">
> command, as the only usage of ndn::nfd::Controller is in NFD-RIB.<br class="">
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I think the exception is thrown by FibUpdater::onUpdateError. NFD is<br class="">
repeatedly timing out on a FibAddNextHopCommand or<br class="">
FibRemoveNextHopCommand. After several failed retries, FibUpdater<br class="">
gives up and kills the whole daemon.<br class="">
<br class="">
Maybe there's a flood of requests and NFD can't keep up?</blockquote>
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<div dir="auto" class="">I might have to apologize for this one. I was working on a tunneling app and it currently would keep 60 outstanding Interests and aggressively retransmit. There's still a problem when the peer is offline, because NFD would immediately
Nack and the consumer would immediately send a new Interest. I forgot to turn off my other endpoint yesterday so it may have been blasting Interests. It's turned off now. I'll implement proper flow control procedure before reconnecting it.</div>
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<div dir="auto" class="">Yours, Junxiao</div>
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