From: Pieter Wuille <pieter.wuille@gmail•com>
To: Mike Hearn <mike@plan99•net>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] Draft BIP for Bloom filtering
Date: Wed, 24 Oct 2012 18:22:56 +0200 [thread overview]
Message-ID: <20121024162255.GA30290@vps7135.xlshosting.net> (raw)
In-Reply-To: <CANEZrP0XALwBFJyZTzYd5xBp4MRrjv0s_y2tOXbO7UgjWF2HzA@mail.gmail.com>
On Wed, Oct 24, 2012 at 05:56:07PM +0200, Mike Hearn wrote:
> I've written a draft BIP describing the bloom filtering protocol
> extension developed by myself and Matt.
>
> https://en.bitcoin.it/wiki/BIP_0037
>
> Please read it and let me know if there are any missing details or
> things which sound wrong.
Some questions:
* why limit the number of matching transactions to 255?
* what does "each hash and key in the output script" mean exactly? what about the output script in its entirety?
* is sharing parts of the merkle branches not worth it?
> Design-wise, it occurred to me as I wrote the BIP that the method of
> delaying reception of invs is a bit ad-hoc. It may be better to have a
> bloom filter be sent in the version message itself. On the other hand,
> having a flag to delay invs means that the filter can be calculated in
> parallel to bringing up the network connections. Whilst actually
> making a Bloom filter is fast, with deterministic wallets you may need
> to do a lot of calculations to find the keys to scan for.
I'm not in favor of stuffing too much into the version message, it already seems overloaded.
A byte with some bit-flags is fine by me - higher bits can later be added for other boolean
flags.
--
Pieter
next prev parent reply other threads:[~2012-10-24 16:39 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-24 15:56 Mike Hearn
2012-10-24 16:22 ` Pieter Wuille [this message]
2012-10-24 16:35 ` Mike Hearn
2012-10-24 17:11 ` Pieter Wuille
2012-10-24 18:54 ` Gavin Andresen
2012-10-24 19:00 ` Matt Corallo
2012-10-24 19:10 ` Mike Hearn
2012-10-24 20:29 ` Gavin Andresen
2012-10-24 20:58 ` Mike Hearn
2012-10-24 21:55 ` Jeff Garzik
2012-10-25 16:56 ` Gregory Maxwell
2012-10-25 17:01 ` Gregory Maxwell
2012-10-26 14:01 ` Mike Hearn
2012-10-26 14:17 ` Gregory Maxwell
2012-10-26 14:21 ` Mike Hearn
2012-10-26 14:34 ` Gregory Maxwell
2012-11-06 19:14 ` Pieter Wuille
2012-11-21 15:15 ` Pieter Wuille
2012-11-21 18:38 ` Matt Corallo
2012-11-27 21:10 ` Pieter Wuille
2013-01-10 15:21 ` Mike Hearn
2013-01-11 3:59 ` Matt Corallo
2013-01-11 5:02 ` Jeff Garzik
2013-01-11 14:11 ` Mike Hearn
2013-01-11 14:13 ` Mike Hearn
2013-01-16 10:43 ` Mike Hearn
2013-01-16 15:00 ` Matt Corallo
2013-01-18 16:38 ` Mike Hearn
2013-01-19 9:51 ` Andreas Schildbach
2013-01-30 11:09 ` Mike Hearn
2013-01-30 11:13 ` Mike Hearn
2013-02-06 16:33 ` Mike Hearn
2013-02-06 16:45 ` Gregory Maxwell
2013-02-20 12:44 ` Mike Hearn
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