From: Mike Hearn <mike@plan99•net>
To: Pieter Wuille <pieter.wuille@gmail•com>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] Service bits for pruned nodes
Date: Sun, 28 Apr 2013 18:57:53 +0200 [thread overview]
Message-ID: <CANEZrP2X9A0kBvN8=+G+dn_uqbSYfNhw7dm4od_yfJqDUoxHWg@mail.gmail.com> (raw)
In-Reply-To: <CAPg+sBjz8SbqU=2YXrXzwzmvz+NUbokD6KbPwZ5QAXSqCdi++g@mail.gmail.com>
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That's true. It can be perhaps be represented as "I keep the last N blocks"
and then most likely for any given node the policy doesn't change all that
fast, so if you know the best chain height you can calculate which nodes
have what.
> Disconnecting in case something is requested that isn't served seems like
> an acceptable behaviour, yes. A specific message indicating data is pruned
> may be more flexible, but more complex to handle too.
>
Well, old nodes would ignore it and new nodes wouldn't need it?
> The reason for splitting them is that I think over time these may be
> handled by different implementations. You could have stupid
> storage/bandwidth nodes that just keep the blockchain around, and others
> that validate it. Even if that doesn't happen implementation-wise, I think
> these are sufficiently independent functions to start thinking about them
> as such.
>
Maybe so, with a "last N blocks" in addr messages though such nodes could
just set their advertised history to zero and not have to deal with serving
blocks to nodes.
If you have a node that serves the chain but doesn't validate it, how does
it know what the best chain is? Just whatever the hardest is?
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next prev parent reply other threads:[~2013-04-28 16:57 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-28 15:51 Pieter Wuille
2013-04-28 16:29 ` Mike Hearn
2013-04-28 16:44 ` Pieter Wuille
2013-04-28 16:57 ` Mike Hearn [this message]
2013-05-03 12:30 ` Pieter Wuille
2013-05-03 14:06 ` Mike Hearn
2013-05-03 14:18 ` Peter Todd
2013-05-03 15:02 ` Mike Hearn
2013-05-03 15:11 ` Peter Todd
2013-05-04 18:07 ` John Dillon
2013-05-04 18:55 ` Jeff Garzik
2013-05-05 13:12 ` John Dillon
2013-05-06 8:19 ` Mike Hearn
2013-05-06 13:13 ` Pieter Wuille
2013-04-28 19:50 ` Gregory Maxwell
2013-04-29 2:57 ` John Dillon
2013-04-29 3:36 ` Gregory Maxwell
2013-04-29 3:42 ` Robert Backhaus
2013-04-29 3:48 ` John Dillon
2013-04-29 3:55 ` Peter Todd
2013-04-29 6:10 ` Jay F
[not found] ` <CAFBxzACw=G7UgG853zQrM-Z1-B4VqSQR5YUJQ5n1=wnv7EyWsw@mail.gmail.com>
2013-04-30 16:14 ` [Bitcoin-development] Fwd: " Rebroad (sourceforge)
2013-04-30 18:04 ` Jeff Garzik
2013-04-30 19:27 ` Andy Parkins
2013-04-30 19:31 ` Simon Barber
2013-04-30 20:11 ` Jeff Garzik
2013-05-01 14:05 ` Andy Parkins
2013-05-01 14:26 ` Jeff Garzik
2013-05-01 14:34 ` Andy Parkins
2013-04-30 20:06 ` [Bitcoin-development] " Brenton Camac
2013-05-01 13:46 ` Jeff Garzik
2013-05-16 11:26 Ricardo Filipe
2013-05-16 15:47 ` Jeff Garzik
2013-05-16 16:23 ` Ricardo Filipe
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