Hacker News Reader

Comment by vlovich123 | Hacker News Reader

Each TCP packet does not require an ack, at least not as a "receive TCP packet send out ACK". They're returned collectively as a bitset for the last N packets instead based on your transmission window (which TCP stacks already tune based on your RTT). Can't see how you'd get rid of that if you're looking for reliable real-time transport medium.

Additionally you can layer in forward error-correction above TCP to reduce packet loss due to the physical medium.

View on HN

None of that really matters if Mars is on the other side of sun from Earth. You'd need relay satellites to direct the signal around the sun, and even at the speed of light that's going to take tens of minutes, one way.

As the parents suggest, even at Earth-Moon distances, we need to completely rethink things.

So who cares? Just adapt the TCP timeouts (resend timeouts) to 10 minutes.

We’ll end up with the same, TCP-based system, except it’s going to be somewhat different, as time scales are not invariant for us humans.

I just wanted to play counter strike with the mars people

You will have to attend community tournaments and compete locally for the chance to play against a Mars team over a high-bandwidth satellite array, possibly on a lunar base, possibly only during seasons of opposition between Earth and Mars.

Even then, you will be playing on a specially-modified version of the game that disables server-side anticheat systems, instead relying on human referees.

My guess is we'll just have local datacenters on mars for the big services (google, netflix, etc). And then more websites will use services like cloudflare so they can get their website cached on mars. AWS will eventually have a mars datacenter. No need for IPFS.

This papers over the whole "relying on large cloud providers" issues in the first place. A decentralized system will ensure that websites won't need to rely on large, centralized powers beyond core infrastructure providers (which we have to fight to ensure are neutral parties, ala Net Neutrality) to avoid concentration of power to a select few.

While I agree with your assessment, it reminds me of the "flying horse carriage" view of the future. Wouldn't be surprised, if multiplanetary hosting would change things more generally.

I'm not a networking expert, but imo i think that with extreme delays, you would not want a real-time transport medium at all. The higher-level protocols would be built on top of a non-real time substrate. You would want to have so much forward error-correction that you could remove ACK completely (perhaps a higher level protocol could still be used to request retransmission in the rare case of failure, e.g. one could request a web page be resent via HTTP, but the hypothetical TCP replacement under that would have no concept of ACK).

Reply on news.ycombinator.com