alt Hacker NewsMost likely case is that the tv is computing hash locally and sending the hash. Judging by my dnstap logs, roku TV maintains a steady ~0.1/second heartbeat to `scribe.logs.roku.com` with occasional pings to `captive.roku.com`. The rest are stragglers that are blocked by `*.roku.com` DNS blackhole. Another thing is `api.rokutime.com`, but as of writing it's a CNAME to one of `roku.com` subdomains.
The block rates seem to correlate with watch time increasing to ~1/second, so it's definitely trying to phone home with something. Too bad it can't since all its traffic going outside LAN is dropped with prejudice.
If your network allows to see stuff like that, look into what PS5 is trying to do.
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Hashing might not work since the stream itself would be a variable bitrate, meaning the individual pixels would differ and therefore the computed file hash
What system do you use to get that level of visibility?
I do suspect you're right since they would want to reduce bandwidth, especially since residential upload speeds are slow but this is pretty close to verifiable, right?
Also just curious, what happens if you block those requests? I can say Samsung TVs really don't like it... but they will be fine if you take them fully offline.