<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Naw, it’s all unicast with plenty of redundant traffic moving along long routes. <br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Feb 25, 2019, at 5:49 PM, Miles Fidelman <<a href="mailto:mfidelman@meetinghouse.net" class="">mfidelman@meetinghouse.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
  
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  <div text="#000000" bgcolor="#FFFFFF" class=""><p class="">That's not what anybody said.  It's EFFECTIVELY multicast -
      avoiding redundant traffic when more than one destination is
      downloading the same file, at the same time.  That's its whole
      point.  (Or as someone else put it, it's a caching mechanism.)<br class="">
    </p><p class="">Miles<br class="">
    </p>
    <div class="moz-cite-prefix">On 2/25/19 4:24 PM, Richard Bennett
      wrote:<br class="">
    </div>
    <blockquote type="cite" cite="mid:05BFAD28-1DCF-49D5-8B09-EF32ADB33FF1@bennett.com" class="">
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      Bittorrent doesn’t use multicast.<br class="">
      <div class=""><br class="">
        <blockquote type="cite" class="">
          <div class="">On Feb 25, 2019, at 1:42 PM, Miles Fidelman <<a href="mailto:mfidelman@meetinghouse.net" class="" moz-do-not-send="true">mfidelman@meetinghouse.net</a>>
            wrote:</div>
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            <div text="#000000" bgcolor="#FFFFFF" class=""><p class="">Well yes, but torrent is a distribution
                mechanism - it's not an infrastructure for maintaining
                or mirroring files.  It's essentially another, sometimes
                more efficient, option for click-to-download (e.g., ftp,
                http, bittorrent).  And it's only more efficient if
                multiple people are downloading at the same time.</p><p class="">Miles<br class="">
              </p>
              <div class="moz-cite-prefix">On 2/25/19 12:28 PM, Richard
                Bennett wrote:<br class="">
              </div>
              <blockquote type="cite" cite="mid:D7B46270-AD5E-4BD4-9ACD-41760F700AFE@bennett.com" class="">
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                No, Bittorrent uses DHTs and accesses as many copies of
                a given file as users choose to share. It has to be
                running to serve files, however.
                <div class=""><br class="">
                </div>
                <div class="">RB<br class="">
                  <div class=""><br class="">
                    <blockquote type="cite" class="">
                      <div class="">On Feb 25, 2019, at 9:59 AM, Miles
                        Fidelman <<a href="mailto:mfidelman@meetinghouse.net" class="" moz-do-not-send="true">mfidelman@meetinghouse.net</a>>
                        wrote:</div>
                      <br class="Apple-interchange-newline">
                      <div class="">
                        <div class="">On 2/24/19 9:53 PM, John Levine
                          wrote:<br class="">
                          <br class="">
                          <blockquote type="cite" class="">
                            <blockquote type="cite" class="">That's what
                              I find intriguing about my Benevolent
                              BotNet notion.  Rather<br class="">
                              than depending on finding an institution
                              interested in, competent at,<br class="">
                              and willing to save history, and hoping
                              that it has longevity, you rely<br class="">
                              on a network of volunteers to provide that
                              survivable infrastructure by<br class="">
                              volunteering their excess computing
                              resources.<br class="">
                            </blockquote>
                            Hi again.  Please look at Bittorrent and
                            tell us how it is different<br class="">
                            from what you're proposing.<br class="">
                            <br class="">
                            Bittorrent has the advantage of already
                            existing and being deployed<br class="">
                            all over the world.  It's notorious for
                            pirated music but it's also<br class="">
                            widely used for sharing linux distributions
                            and the like.<br class="">
                            <br class="">
                          </blockquote>
                          Bit torrent is transient.  It's more like an
                          ad-hoc multi-cast <br class="">
                          streaming.  When nobody is downloading, there
                          may be only one copy of <br class="">
                          the file.<br class="">
                          <br class="">
                          Now gnutella, and some of the other P2P file
                          sharing systems - that <br class="">
                          replicate copies, or distribute files across a
                          distributed hash table - <br class="">
                          that's another story entirely.<br class="">
                          <br class="">
                          -- <br class="">
                          In theory, there is no difference between
                          theory and practice.<br class="">
                          In practice, there is.  .... Yogi Berra<br class="">
                          <br class="">
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                    </blockquote>
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                          <a href="http://hightechforum.org/" class="" moz-do-not-send="true">High Tech Forum</a> Founder</div>
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              <pre class="moz-signature" cols="72">-- 
In theory, there is no difference between theory and practice.
In practice, there is.  .... Yogi Berra</pre>
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    <pre class="moz-signature" cols="72">-- 
In theory, there is no difference between theory and practice.
In practice, there is.  .... Yogi Berra</pre>
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