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[Mldonkey-users] OT: P2P via SMTP and Open Relays
From: |
Christian Brandt |
Subject: |
[Mldonkey-users] OT: P2P via SMTP and Open Relays |
Date: |
Sat, 5 Apr 2003 07:26:33 +0200 |
Am Freitag 04 April 2003 19:54 schrieb Christian Brandt:
> A local group of users once used it in a slightly less aggressive
> environment, all participants had local Mailservers on their
> dial-up-lines and DynDNS. So we send Chunks of 32MB via our providers
> relay by CC: targeted to five recipients with adresses like
> address@hidden, address@hidden and so on and thus the
> transfer should also be efficient from a providers perspective.
I got request whats the clamour about. Well, basically SMTP contains
something comparable to multicast, which means you send it once through
your line to an SMTP-relay and that relay may resend it 10, 100 or 1000
times to different recipients. So e.g. your 128kBit/s uploadline is busy
for 15 hours sending a 700MB ISO to your relay, but then the relay resends
it using its full bandwidth of 100, 622 or 1000MBit/s to clients using a
downloadline of 768kBit, everyone of the eg 1000 receivers gets the full
buzz within two hours and so circumventing the small uploadlines usually
found at private homes.
Thats right, in ideal cases 1000 users get the complete download within
two hours without blocking the precious uploadline!
That was a simplification, but the rather complex total concept could be
contained in a nice programm hidding the complexity from the users. Also
this isn't really P2P but a rather complex Server-Client-System, but who
cares, its mostly about distributing incredible amounts of data in no time
and at no costs.
Btw even more Offtopic, on the mail-archives at nongnu.org all
email-addresses like leecher-at-example.dyndns.org and
bigdrive-at-vvv.dyn.cx got replaced by at-bogus.example.com addresses...
--
Christian Brandt
life is short and in most cases it ends with death
but my tombstone will carry the hiscore
Re: [Mldonkey-users] Re: Mldonkey-users Digest, Vol 5, Issue 4, Martin Kuhlmann, 2003/04/04