[Mini-NDN] [EXT] ERROR: Failed to register prefix (authorization rejected)

[Junxiao Shi]

Hi Nazatul

This is caused by multiple producers trying to register prefixes
simultaneously.
Prefix registration uses signed Interests. If two signed Interests are
signed by the same key but processed out of order, the validator will
reject them. See
https://redmine.named-data.net/issues/2293

To solve this issue, give each producer a separate KeyChain by setting
distinct values in NDN_CLIENT_PIB and NDN_CLIENT_TPM environment variables,
so that they sign the signed Interests with distinct keys.
Ideally this logic should be provided by Mini-NDN scripts.

Yours, Junxiao

On Tue, Aug 18, 2020 at 23:05 Nazatul Haque Sultan via Mini-NDN <
mini-ndn at lists.cs.ucla.edu> wrote:

> *External Email*
> Dear All,
>
> I was trying to publish contents (videos) using
> "ndnputchunks. However, a few times I could see an "*authorization
> rejected*" error:
>
> ERROR: Failed to register prefix '/ndn/a-site/a/XYZ.mp4' (authorization
> rejected)
>
> I have attached a screenshot of it. Can someone please explain this to me?
> That will be very helpful.
>
> Thank you in advance.
>
> Best Regards,
> Nazatul
>
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