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ISS Launches First Permanent Node of "Interplanetary Internet"

schliz writes "Researchers developing the 'Interplanetary Internet' have launched its first permanent node in space via a payload aboard the International Space Station. The network is based on a new communications protocol called Delay/Disruption Tolerant Networking (DTN). It will be tested heavily this month, and could give astronauts direct Internet access within a year. The Interplanetary Internet is the brainchild of Vint Cerf ('father of the Internet'), among others. Last year, NASA tested the technology on the Deep Impact spacecraft." Update: 07/13 20:01 GMT by KD : If by "permanent" we mean seven years.

87 of 121 comments (clear)

  1. It will be tested heavily this month... by ei4anb · · Score: 4, Funny

    "It will be tested heavily this month" , so, they are going to post the URL on slashdot ?

    1. Re:It will be tested heavily this month... by GaryOlson · · Score: 4, Interesting

      Seed a torrent of the latest Harry Potter movie....that should demonstrate the magic of DTN.

      --
      Every mans' island needs an ocean; choose your ocean carefully.
    2. Re:It will be tested heavily this month... by CarpetShark · · Score: 2, Informative

      "It will be tested heavily this month" , so, they are going to post the URL on slashdot ?

      No, they're going to let slashdotters whine about it, and see if it cracks.

    3. Re:It will be tested heavily this month... by yabos · · Score: 1

      The astronauts will be downloading lots of pr0n.

    4. Re:It will be tested heavily this month... by boaworm · · Score: 2, Funny

      Well at least the DMCA should not apply in Space, should it?

      --
      Probable impossibilities are to be preferred to improbable possibilities.
      Aristotele
    5. Re:It will be tested heavily this month... by ivucica · · Score: 1

      The Berne convention might :)

    6. Re:It will be tested heavily this month... by rossy · · Score: 1

      One of the astronauts on Endeavor has a hotmovies.com account.

      --
      Ross Youngblood
  2. lol by Anonymous Coward · · Score: 5, Funny

    It...could give astronauts direct Internet access within a year

    i am in ur space station, trollin' ur boards!

    1. Re:lol by Anonymous Coward · · Score: 1, Funny

      True, but there's a certain je ne sais quoi to being able to simply drop a piece of space junk on that asshole who just ruined your thread.

  3. "Permanent"??? by Jane+Q.+Public · · Score: 3, Insightful

    Uh... sorry. But NASA's plans for the ISS, or anything like it at this time, are hardly "permanent".

    If you want them to be, get off your butts and tell that to the Whitehouse and your Congresscritters. Because they obviously don't know.

    1. Re:"Permanent"??? by Razalhague · · Score: 1

      STOP WASTING OUR MONEY

      I think that's the whole point of bringing it down.

    2. Re:"Permanent"??? by owlstead · · Score: 2, Insightful

      Permanent is relative. It may be permanent compared to the time ISS will stay in space from the moment they install the node. In the end, of course, nothing is completely permanent compared to the time left to the universe - unless it disappears suddenly.

    3. Re:"Permanent"??? by jo42 · · Score: 1

      I read somewhere NASA plans to de-orbit the ISS in 2016 due to budgetary concerns...

    4. Re:"Permanent"??? by jc42 · · Score: 1

      I read somewhere NASA plans to de-orbit the ISS in 2016 due to budgetary concerns...
      You probably read it here on slashdot. In my FF tab showing the /. main page, it's three stories higher on the screen. TFA for that one references a couple of news publications' stories on the topic.

      (Yeah, I read that one earlier than this one, too. They both appeared on my screen at the same time. I guess I was busy and didn't refresh /. for over two hours. ;-)

      --
      Those who do study history are doomed to stand helplessly by while everyone else repeats it.
    5. Re:"Permanent"??? by caluml · · Score: 1

      I read somewhere NASA plans to de-orbit the ISS in 2016 due to budgetary concerns...
      You probably read it here on slashdot. In my FF tab showing the /. main page, it's three stories higher on the screen.

      Er, whoosh? Also - jo42, jc42 - is this some new meme?

    6. Re:"Permanent"??? by Gilmoure · · Score: 1

      It makes me think of Gremlins, in suits.

      --
      I drank what? -- Socrates
    7. Re:"Permanent"??? by SnarfQuest · · Score: 1

      If you missed the other article, this "permanent' node will be de-orbited in 2016.

      --
      Who would win this election: Andrew Weiner vs Andrew Weiner's weiner.
    8. Re:"Permanent"??? by mikiN · · Score: 2, Funny

      nope, I think they should post it on eBay. They can even offer (ballistic) shipping worldwide. Winner of the bid assumes full liability for any damages during and after re-entry and should make arrangements for insurance or alternative shipping method if desired.

      --
      The Hacker's Guide To The Kernel: Don't panic()!
    9. Re:"Permanent"??? by mikiN · · Score: 1

      In Soviet Russia, Kremlins Zap YOU!

      --
      The Hacker's Guide To The Kernel: Don't panic()!
  4. It is only a matter of time... by lxs · · Score: 2, Funny

    Before we'll have our first bittorrent tracker on mars.

    1. Re:It is only a matter of time... by Anonymous Coward · · Score: 1, Funny

      Be fun for the RIAA to try and seize that one.

  5. Delay/Disruption Tolerant Networking? by BenEnglishAtHome · · Score: 2, Interesting

    Hmmmmm. Will we get an earthly version of DTN that ensures I can successfully download large files over TOR? Now, *that* would be useful.

    1. Re:Delay/Disruption Tolerant Networking? by CarpetShark · · Score: 1

      He's not talking about P2P over Tor, he's talking about large files. Since the web is designed to handle links without caring about their size, Tor's solution is flawed if it can't handle them. When's the last time you saw a link with a size attribute, or a "too big for anonymous networks" flag along with the href?

    2. Re:Delay/Disruption Tolerant Networking? by ImYourVirus · · Score: 1

      I wouldn't say tor is for watching youtube videos either or whatever you mean by 'large files' one can really only assume p2p. Besides not even counting p2p, tor is still not meant for large files of any kind, and it is the reason the network does suck.

      --
      Why is common sense called that if it's not common?
    3. Re:Delay/Disruption Tolerant Networking? by Khyber · · Score: 1

      No, TOR sucks because of moron ISPs capping upload bandwidth. Were that fixed TOR would run very reliably.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    4. Re:Delay/Disruption Tolerant Networking? by CarpetShark · · Score: 1

      There are plenty of large files on the net that have NOTHING to do with P2P, and look entirely like any other file or link until you click on them (and conceptually ARE entirely like any other link, regardless of the larger size). PDFs, for instance, can be any size, and even the same content in PDFs can vary hugely in filesize just depending on which PDF generator is used. High-res astronomy photos that enthusiasts might need or care to share with friends, etc. Tor could legitimately be used for downloading medical case histories of some embarrassing medical condition that only affects 43 people around the world, and isn't popular enough to be on P2P, for instance.

      The web has large files. Tor is built on the assumption that people are entitled to access the web anonymously. Therefore, Tor must be able to access large files. Simple really.

    5. Re:Delay/Disruption Tolerant Networking? by jd · · Score: 1

      Until Linux and the *BSDs have DTN as standard, you're not likely to see anything serious using it. DTN could be seriously useful in a lot of circumstances, but look at the hassle getting multicasting or IPv6 - and these are protocols that have long been supported both in ISPs routers and the OS' in people's homes.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    6. Re:Delay/Disruption Tolerant Networking? by BenEnglishAtHome · · Score: 1

      You shouldn't assume I mean p2p because I don't. There are plenty of file servers out there set up to be accessible via Tor. Some have mp3s, some have movies. Some have plans for overthrowing the government or blowing up the world. I've never used p2p over Tor. I have, however, tried to download files ranging from a meg to a gig in size with varying degrees of success. I've never, despite trying at all hours of the day and on all days of the week, been able to complete the download of a 1-gig file over Tor. The process usually breaks somewhere under 100 megs. I've found my attempts to download much smaller files to be less than confidence-inspiring, with anything over 5 megs as likely as not to fail.

      I guess I should start investigating software that manages and resumes downloads more intelligently than what's built into my current tools - which is simply Ubuntu, Firefox, and the DownThemAll add-on.

      But, seriously, I know that Tor wasn't built around the idea of moving large files. My original post was half-meant as a joke. I'm surprised to see all this discussion over a throwaway comment.

    7. Re:Delay/Disruption Tolerant Networking? by CarpetShark · · Score: 1

      What about downloading hi-res astronomy photos requires anonymity?

      That's not for you to decide. What about posting information requires anonymity? To you, maybe nothing. To someone in an oppressive environment, maybe everything. Maybe some kid's parent thinks astronomy and astrology are the same thing, for instance.

      More importantly, there is a well-known security principle that if only the sensitive information is encrypted, it's pretty much painting a target on your back. Imagine if all your letters were on postcards, except for the ones you didn't want anyone to see, and the sensitive ones are put in sealed envelopes. Now the postman, police, national security agencies, etc. know exactly which mails to look at, and can be pretty much guaranteed to read your sealed mails.

    8. Re:Delay/Disruption Tolerant Networking? by ImYourVirus · · Score: 1

      Lol downloading movies and mp3s in any format is p2p and yes I know what tor offers on the tor only side of it, you have to remember though to that it's not just transferring files through the network that can be slow, but also the persons upload is a factor as well, if it's shit or a lot of people are using it, it's going to be slow just like anything. I have seen very fast transfers across the network just depends on a few factors. And yes something with resuming capabilities is a must for trying to get something huge through the network.

      If you truly want to see where the problem lies you can always setup your own routes across the network and see where the problem lies.

      Good hunting.

      --
      Why is common sense called that if it's not common?
    9. Re:Delay/Disruption Tolerant Networking? by BenEnglishAtHome · · Score: 1

      Lol downloading movies and mp3s in any format is p2p...

      Interesting definition of p2p you've got there.

      ...something with resuming capabilities is a must...

      I'll be playing with wget and gwget tonite.

    10. Re:Delay/Disruption Tolerant Networking? by ImYourVirus · · Score: 1

      Well when one talks about movies/music/whatever and downloading usually one is talking about p2p, if you mean something other than warez, please enlighten me.

      --
      Why is common sense called that if it's not common?
    11. Re:Delay/Disruption Tolerant Networking? by BenEnglishAtHome · · Score: 1

      I'm talking about simple file servers. There are file depositories out there (FTP servers and others) that serve out gigs of data in response to requests a few kilobytes in size. I'm not doing p2p in the sense that no data on my machine is accessed by anyone else. I'm not running any software that employs bit torrent or any other file sharing protocol. People do, after all, often maintain servers that hand out movies, music, and other files simply out of the goodness of their hearts, without requiring anything in return. Sometimes they're called ftp servers. Sometimes they're called "web sites."

    12. Re:Delay/Disruption Tolerant Networking? by ImYourVirus · · Score: 1

      Or just simply called file sharing, protocol doesn't matter, ftp, http, etc and yes it may not be p2p in the strictest of senses but it still can be generally categorized in that way, even if that's not the 'definition' of it.

      --
      Why is common sense called that if it's not common?
  6. Define "permanent" by qengho · · Score: 5, Informative

    It'll be permanent until the ISS is de-orbited in 2016, eh?

  7. Don't slashdot that server.... by drachenfyre · · Score: 2, Funny

    The consequences might be a little rough.

  8. Traffic capacity? by Anonymous Coward · · Score: 1, Interesting

    I would be interested in reading some specifications about what traffic capacity this node has.

  9. Hey, astronauts gets lonely, too! by adosch · · Score: 1

    pr0n from space! The *new* frontier!

  10. Can't wait... by Trashman · · Score: 1, Redundant

    ... to FTP to Mars.

    --
    Do not read this .sig
  11. As Jerry Seinfeld would say by $RANDOMLUSER · · Score: 2, Funny

    They named the spacecraft "Deep Impact" ...Who's the rocket scientist who came up with that one?

    --
    No folly is more costly than the folly of intolerant idealism. - Winston Churchill
  12. Do we really need the Internet on the ISS? by defireman · · Score: 2, Insightful

    If experience on Slashdot has taught me anything, having the Internet on ISS is a bad idea. The astronauts will spend half the time surfing the Internet instead of running 'scientific experiments'.

    .. or downloading the latest Michael Jackson DVDs for a hands on tutorial of the 'Moonwalk'.

    1. Re:Do we really need the Internet on the ISS? by bertoelcon · · Score: 1

      Moonwalk would require gravity, so we need to go back to the moon or modify it too a "marswalk"

      --
      Anything can be found funny, from a certain point of view.
  13. First impressions. by bigbluemachine · · Score: 1

    Has anyone taken into account the sheer volume of pron that takes up the vast majority of the internet and what kind of impression that will leave on impressionable alien children as they zoom by our wee rock? Not to mention all of the middle aged aliens seeing our internet and thinking that if were they to land that it would be one giant non stop orgy filled with only the prettiest people,mountains of blow,and lots and lots of latex.

    1. Re:First impressions. by MadnessASAP · · Score: 1

      Have you seen Ron Jeremy? Pretty aint exactly a word I've heard used to describe him.

      --
      I may agree with what you say, but I will defend to the death your right to face the consequences of saying it.
  14. Serious Lag times by EdgeyEdgey · · Score: 1

    Not to be used for Counterstrike.

    --
    [Intentionally left blank]
  15. Last Post by PotatoFiend · · Score: 4, Funny

    Sorry, posting this from ISS.

    --
    "Liberty may be endangered by the abuses of liberty as well as the abuses of power." -- James Madison
  16. What protocols is it using? by scubamage · · Score: 3, Interesting

    Ok, dorky question, but what protocols is it using? I mean, how does it make up for the sometimes massive EMD that will be in the way occasionally? A thunderstorm? TCP doesn't seem like it would be enough to handle the interference. Is it a microwave transmission? Are they using blinky lights? Are they using ethernet or some WAN technology? Do they use IPv6?

    1. Re:What protocols is it using? by Anonymous Coward · · Score: 5, Informative

      it uses, of course, DTN, as the protocol. DTN sits in between IP and the other layers (UDP,TCP).. Think of it is as intelligent "store and forward" routing for long latency or sporadic links. It has a lot of flavors, but ultimately, you transfer a bundle of data to another node (perhaps on a predetermined schedule), when the other node agrees it's got it, "custody" of the bundle transfers.

      The physical layer is standard microwave for space (S and K band for station, X band and Ka band for deep space links of the future). It can also be carried over wired media (or heck, avian carriers as well)

    2. Re:What protocols is it using? by scubamage · · Score: 1

      You rock anon :) Thanks! I found the other article had some info but it didn't seem to explain much (kept swapping around terms so I didn't know how correct it was, or if it was all still theoretical at time of publishing) and it didn't really indicate that DTN works in between layers 3 and 4. Sounds like it'll be some cool technology.

    3. Re:What protocols is it using? by scubamage · · Score: 3, Informative

      Also, despite the bad form of replying to myself, I found the RFC's specifying the protocols here: RFC 4838 (DTN) and RFC 5050.

    4. Re:What protocols is it using? by DragonWriter · · Score: 1

      The physical layer is standard microwave for space (S and K band for station, X band and Ka band for deep space links of the future). It can also be carried over wired media (or heck, avian carriers as well)

      Though using wired (or RFC 1149- or 2549-style) connections into space is not advised.

  17. What? by ledow · · Score: 1, Insightful

    Sorry, I don't see how this technology and "using the Internet" are at all related.

    It's a store-and-forward technology designed to allow interruptions of seconds, days, weeks, months, etc. in communication. How does that relate to the modern Internet or being able to "post on Twitter"? What you're saying is that I can request a webpage and (via suitable protocol-translation at some gateway presumably back on Earth) eventually my request will be sent - TCP handshaking is out of the window, timeouts will defeat login attempts, etc. What this actually *might* be is a very, very delay-tolerant email setup... we have one of those... it's called "retry and exponential backoff". This assumes *so* much it's unbelievable and basically tries to plant real-time TCP web traffic in the same category as "send this message to Earth, I don't care when it arrives".

    Are the public seriously that stupid that even this mildly technical article has to be related to Twitter in order for people to understand it (erroneously)?

    1. Re:What? by CrashandDie · · Score: 1

      Asynchronous requests aren't that difficult to implement. Most XML-based request-response languages (SOAP, SPML, SAML) have at least a notion of asynch transmission.

      Worried about privacy? Just PKI encrypt + sign the whole request so you know where it came from, and who it is destined to, and you don't need the age old "sessions" anymore. Sessions only make sense in a system that relies on synchronous communications.

      Now of course, we can't ensure delivery, but then again, I don't see how that would be part of the requirements when you've got aliens eating your crew, and computers refusing to open the latch.

    2. Re:What? by John+Hasler · · Score: 1

      > What this actually *might* be is a very, very delay-tolerant email setup... we have one
      > of those... it's called "retry and exponential backoff".

      It's called UUCP.

      --
      Warning: this article may contain humor, sarcasm, parody, and perhaps even irony. Read at your own risk.
    3. Re:What? by ae1294 · · Score: 1

      Sounds like FIDO.NET for outer space.

  18. This... by Braintrust · · Score: 1

    ... will allow Goatse to spread even further...

    --
    Years later, a doctor will tell me that I have an I.Q. of 48, and am what some people call "mentally retarded".
  19. DTN is ok, I've been testing it for a year now... by BlueScreenOfTOM · · Score: 1

    I'm pretty sure that MDU Communications has volunteered our condo building to test DTN for the last year or so. I guess they figure since they have an exclusive contract with our building and we don't have any other choice of ISP (besides dial-up and capped 3G cellular), we'd be perfect. I can report that Slashdot is working this morning, although Google is not. Maybe once the system is deployed to ISS, they'll stop injecting delays and disruptions!

  20. ping times by hotmultimedia · · Score: 1

    i wonder how long it takes to get a ping reply from outer space.

  21. Boon to astronauts by owlstead · · Score: 1

    Astronauts finally don't have to use that shaky GPRS on their iPhones. I've heard the reception is really bad over there.

  22. Cool protocol.. but sounds a bit familiar... by luckytroll · · Score: 1

    I liked the idea, and went on to read more about the protocol.
    I can definitely see some uses for this on earth.

    One example would be on cruising sailboats that only have occasional access to inexpensive wifi hotspots, and the rest of the time have to use slow SSB links. Another
    example might be for use in automotive networking, where a car sometimes has access to a real network, sometimes a cellular, and sometimes just some low-fi sattelite.

    But really, this all sounds eerily familiar. Could if be FidoNet and UUCP in space?

    I still want to see it implemented in the next Linux kernel though.

    1. Re:Cool protocol.. but sounds a bit familiar... by John+Hasler · · Score: 1

      > I still want to see it implemented in the next Linux kernel though.

      This does not belong in the kernel.

      --
      Warning: this article may contain humor, sarcasm, parody, and perhaps even irony. Read at your own risk.
    2. Re:Cool protocol.. but sounds a bit familiar... by ae1294 · · Score: 2, Insightful

      This does not belong in the kernel.

      Have you looked at the .config file lately? THERE is A LOT that shouldn't be in the kernel..

    3. Re:Cool protocol.. but sounds a bit familiar... by jd · · Score: 2, Interesting

      Given that DTN sits between two layers already in the kernel, it'd be stupid to have DTN in userspace. (Stupid and potentially dangerous, as you then have a userspace app injecting data into a fairly low level part of the kernel in a way that would have to bypass a lot of safeguards.)

      As for stuff that's in the kernel that shouldn't be - want to give some examples? I can think of a few things that are probably not great, but I can't think of anything that absolutely shouldn't be there.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    4. Re:Cool protocol.. but sounds a bit familiar... by ae1294 · · Score: 1

      I donno, MFM hard drive support? It probably doesn't even work anymore...

  23. DVDs by alain_delon · · Score: 1

    Perhaps with this, the astronauts will finally be able to download some codecs so they can watch DVDs on the space station. http://science.slashdot.org/article.pl?sid=09/05/27/1656214

  24. I thought... by Relic+of+the+Future · · Score: 1

    I thought the "big deal" with NASA's new protocol was that it could handle the overly-long round trip times (stupid speed of light and vast interplanetary distances!) that would make TCP unusable. I suppose that's what the store-and-forward process is suppose to get around (among other things), but the article doesn't make that particularly clear.

    --
    Those who fail to understand communication protocols, are doomed to repeat them over port 80.
    1. Re:I thought... by jandrese · · Score: 2, Informative

      A single DTN node is not terribly useful, where you see advantages is when you have multiple lossy or intermittent links along the path. In this case, TCP will perform very poorly as it can only even try to push data on the cases where all of the links are up and will suffer a lot from TCP's slow start.

      Think of it like a game of Frogger: TCP only knows how to play by waiting until all of the cars and logs are line up just right so it can jump all of the way across at once. DTN plays like a human player, one step at a time while it's safe and then waiting for it to become safe for the next step.

      One of the interesting aspects of DTN is that it is transport layer agnostic. This means the very same bundle can be sent over TCP, then SCPS, then USB key or whatever and the applications never have to deal with it. The applications only have to speak DTN. There are local Daemons in the network that choose the most optimal transport protocol for whatever the next hop is, and then send the bundle over that.

      --

      I read the internet for the articles.
    2. Re:I thought... by jd · · Score: 1

      This makes it great for wireless networks in which routes are highly variable or not otherwise knowable in advance. Routing protocols already exist for such indeterminate networks, but if the protocol you're transmitting has too short a timeout, it's useless. You'd lose far too many packets and never get any work done.

      So, for such networks, you'd need DTN. DTN would also be useful when using Mobile IP, where the two networks you're crossing between have a gap between them, so there isn't 100% coverage. Then, your connection can survive the transition, even though you don't have actual connectivity for all of that time.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
  25. In Space.... by Stenchwarrior · · Score: 1

    ...no one can hear you get fragged.

    (To you /.er's that love to correct people: I know there will be latency issues....shut up.)

    --
    Loading...
  26. iGalactic Internet by FreakyGreenLeaky · · Score: 1

    Thank God they didn't pull a Branson on themselves and call it "InterGalactic Internet" or some such nonsense.

  27. Not That Permanent by TiberSeptm · · Score: 1

    Obviously this isn't THAT permanent since it's being de-orbited in 2016.

  28. In space... by Hanners1979 · · Score: 1

    In space, no-one can hear you get Rickrolled...

  29. How is this "Interplanetary"? by jbarr · · Score: 1

    Interplanetary is defined as, "existing or occurring between planets" or "being or occurring between the planets or between a planet and the sun."

    How is is a setup between a space station and a planet interplanetary?

    --
    My mom always said, "Jim, you're 1 in a million." Given the current population, there are 7000 of me. God help us all!
  30. Most important question: by uvsc_wolverine · · Score: 1

    Will colonists on Jupiter's moons (except for Europa of course) be able to play WoW? That 17 minute latency would be a real game killer.

    --
    This space for rent...
  31. Vint by jc42 · · Score: 1

    If Vint Cerf is the 'father of the Internet', I wonder who the mother is ...

    --
    Those who do study history are doomed to stand helplessly by while everyone else repeats it.
  32. interesting browsing experience by keeboo · · Score: 1

    $ wget http://blah.com.mars/
    Error: Connection timed out.

    20 minutes later...
    TCP packet from blah.com.mars just arrived.

  33. WoW by SEWilco · · Score: 1

    Worlds of Warcraft.

  34. RIAA in SPAAAACE by CompMD · · Score: 1

    1) Give astronaut CD of latest pop music craze.
    2) Have astronaut rip CD to MP3.
    3) Create and host torrent of album from ISS.
    4) Make RIAA go to orbit to subpoena astronaut.
    5) ???
    6) Profit!

    This might actually help us get a real commercial space program going.

  35. Ob. comment by zorro-z · · Score: 1

    All your space stations are belong to us.

    -Z

    --
    -Z
  36. Email Account by imscarr · · Score: 1

    Can I get an email account on their server? Maybe imscarr@iss.et ?

    --
    Like the beaver, it's just Dam one thing after another
  37. Sounds a lot like... by Foozy · · Score: 1

    UUCP - the store and forward network of the 20th century. Will be interesting to see if they come up with alternative naming, and whether Harri's Lament still holds- "All the good ones are taken!"

  38. Think of it... by jd · · Score: 1

    ...like FTP-by-email, but for any Internet protocol, not just FTP.

    --
    It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
  39. Say what?! by jd · · Score: 1

    It sits between the Ethernet and TCP/UDP layers. Where the hell do you think it's going to sit? On top of the monitor? The only way you could add DTN except in the kernel is via netfilter (which would make this not only Linux-specific but also firewall technology specific, as netfilter is being replaced).

    Adding DTN in userspace via netfilter would (a) add some very stupid and unnecessary context switches, and (b) totally subvert the purpose for which netfilter is designed, not for technical reasons but political ones.

    But there's nowhere else you can put it, if you want to run DTN in userspace. Which means you either have a totally stupid, farcical solution OR a kernel implementation.

    Take your pick.

    --
    It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
  40. Old is new again by Impy+the+Impiuos+Imp · · Score: 1

    I'm so old I remember being taught algorithms for ancient reel-to-reel computers (think background of stuff in the '60s TV show Lost in Space) for merging, sorting, and so on, giant databases based when having access to 1, 2, or 3 reels and a severely limited amount of RAM. Efficient in that context can be way different from the modern World of Plenty programming.

    Six hundred years ago, I once made a joke somewhere about how bad the lag would be playing a game of Quake intercontinentally using courierred tape reels.

    --
    (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
  41. Re:pornz... in... space... by mikiN · · Score: 1

    pings in space.

    With truly astronomical round-trip times.

    --
    The Hacker's Guide To The Kernel: Don't panic()!
  42. Makes interplanetary missions more interesting by Grocks · · Score: 1

    This gives the astronauts some more intellectual material to spend their time on in the otherwise potentially-boring interplanetary missions. Of course, the term 'intellectual' may be a stretch. Could also be a reason to spruce up a locally-stored-thread-type service, to give the astronauts something that they could read without a 16-minute wait. Their replies would still have a long wait, but who cares, it's not like they are clicking on a hyperlink.

  43. Re:pornz... in... space... by Lazerus+King · · Score: 1

    Anyone else get a muppet show flashback?? Piiiiings in Spaaaaaaace!