[Nfd-dev] NFD dropping packets

[Davide Pesavento]

Hi Peter,

I don't understand what you mean by "old code", what is old? Your app? The
library? NFD? All of them? What library is your app using?

Are you using any v0.3 packet format features in your app, such as Interest
Parameters? If so, or if for some other reason your library is encoding the
Interest in v0.3 format, then the decoder in NFD will not accept any TLV
elements that were removed in v0.3, such as Selectors (type=9), and will
drop the packet.

Davide

On Tue, Dec 4, 2018, 3:10 PM Gusev, Peter <peter at remap.ucla.edu> wrote:

> Hi devs,
>
>
> I recently noticed that I can’t fetch ndnrtc video stream with somewhat
> old (~2months) code. In the app I’m getting timeouts:
>
>         1543953646377   [WARN ][       remote-stream]-
> operator(): error fetching stream meta: Time out for interest
> /touchdesigner/ndnrtcOut/ndnrtc/%FD%03/video/s/_meta
>
> while in NFD log I observer these messages:
>
>         1543953961.057775 WARNING: [GenericLinkService]
> [id=287,local=unix:///private/var/run/nfd.sock,remote=fd://73] packet parse
> error (unrecognized element of critical type 9): DROP
>
> Face 287 is an application face:
>
>         faceid=287 remote=fd://73 local=unix:///private/var/run/nfd.sock
> congestion={base-marking-interval=100ms default-threshold=65536B}
> counters={in={0i 0d 0n 1120B} out={0i 0d 0n 0B}} flags={local on-demand
> point-to-point congestion-marking}
>
> I was wondering whether these DROP messages relate to my code or not. I
> still can fetch video with my latest code though.
>
> I’m using NFD 0.6.4 (macOS).
>
> Thanks,
>
> --
> Peter Gusev
>
> peter at remap.ucla.edu
> +1 213 5872748
>
> Research Scholar @ REMAP UCLA
> Video streaming/ICN networks/Creative Development
>
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