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| author | Peter Todd <pete@petertodd.org> | 2018-05-20 23:56:58 -0400 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2018-05-21 03:57:09 +0000 |
| commit | de0955ceb53761d03a18486498ce43a9d4e36ea1 (patch) | |
| tree | 359e9c59ad1e00574c9ea390a3a1be9985bf698d | |
| parent | 7e5222fc2baee782210620996857168d2b4d399d (diff) | |
| download | pi-bitcoindev-de0955ceb53761d03a18486498ce43a9d4e36ea1.tar.gz pi-bitcoindev-de0955ceb53761d03a18486498ce43a9d4e36ea1.zip | |
Re: [bitcoin-dev] Making OP_TRUE standard?
| -rw-r--r-- | 90/46811b78367d2d5dc230bfed9c65e34c5e22ea | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/90/46811b78367d2d5dc230bfed9c65e34c5e22ea b/90/46811b78367d2d5dc230bfed9c65e34c5e22ea new file mode 100644 index 000000000..52de35a9a --- /dev/null +++ b/90/46811b78367d2d5dc230bfed9c65e34c5e22ea @@ -0,0 +1,133 @@ +Return-Path: <user@petertodd.org> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id DF78CBD4 + for <bitcoin-dev@lists.linuxfoundation.org>; + Mon, 21 May 2018 03:57:09 +0000 (UTC) +X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 +Received: from outmail149082.authsmtp.co.uk (outmail149082.authsmtp.co.uk + [62.13.149.82]) + by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 07E8A284 + for <bitcoin-dev@lists.linuxfoundation.org>; + Mon, 21 May 2018 03:57:06 +0000 (UTC) +Received: from mail-c245.authsmtp.com (mail-c245.authsmtp.com [62.13.128.245]) + by punt22.authsmtp.com. (8.15.2/8.15.2) with ESMTP id w4L3v3Mj095756; + Mon, 21 May 2018 04:57:03 +0100 (BST) + (envelope-from user@petertodd.org) +Received: from petertodd.org (ec2-52-5-185-120.compute-1.amazonaws.com + [52.5.185.120]) (authenticated bits=0) + by mail.authsmtp.com (8.15.2/8.15.2) with ESMTPSA id w4L3v1VA071025 + (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); + Mon, 21 May 2018 04:57:02 +0100 (BST) + (envelope-from user@petertodd.org) +Received: from [127.0.0.1] (localhost [127.0.0.1]) + by petertodd.org (Postfix) with ESMTPSA id 4921840103; + Mon, 21 May 2018 03:57:01 +0000 (UTC) +Received: by localhost (Postfix, from userid 1000) + id CBDB020322; Sun, 20 May 2018 23:56:58 -0400 (EDT) +Date: Sun, 20 May 2018 23:56:58 -0400 +From: Peter Todd <pete@petertodd.org> +To: Rusty Russell <rusty@rustcorp.com.au>, + Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org> +Message-ID: <20180521035658.vfo4wx6ifum2s2o5@petertodd.org> +References: <87po25lmzs.fsf@rustcorp.com.au> + <201805100227.42217.luke@dashjr.org> + <87vabnq9ui.fsf@rustcorp.com.au> + <CADZtCShwOV+GuJ5__GMi9hd2_X=BztASPBihDXakU3Mjb39wcQ@mail.gmail.com> + <87zi0tisft.fsf@rustcorp.com.au> +MIME-Version: 1.0 +Content-Type: multipart/signed; micalg=pgp-sha256; + protocol="application/pgp-signature"; boundary="cl5oyjjna7yuxyre" +Content-Disposition: inline +In-Reply-To: <87zi0tisft.fsf@rustcorp.com.au> +User-Agent: NeoMutt/20170113 (1.7.2) +X-Server-Quench: 0544c01e-5cab-11e8-a283-9cb654bb2504 +X-AuthReport-Spam: If SPAM / abuse - report it at: + http://www.authsmtp.com/abuse +X-AuthRoute: OCd2Yg0TA1ZIVwkA IjsJECJaVQIpKltL GxAVKBZePFsRUQkR + bgdMdAMUFVQNAgsB Am4bW1BeVVp7WWA7 bghPaBtcak9QXgdq + T0pMXVMcUwEUAloA YG8eVRhydQAIeXxy ZkAsXnVfWBd6dBNg + Rx0FR3AHZDJodTEd WENFflAGdgZOLE1H b1B7GhFYa3VsNCMk + FAgyOXU9MCtqYAFc QQALIho1eXE3JAMR DwseFDMjFFcJEE3Y +X-Authentic-SMTP: 61633532353630.1039:706 +X-AuthFastPath: 0 (Was 255) +X-AuthSMTP-Origin: 52.5.185.120/25 +X-AuthVirus-Status: No virus detected - but ensure you scan with your own + anti-virus system. +X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW + autolearn=ham version=3.3.1 +X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on + smtp1.linux-foundation.org +Cc: Matt Corallo <matt@chaincode.com> +Subject: Re: [bitcoin-dev] Making OP_TRUE standard? +X-BeenThere: bitcoin-dev@lists.linuxfoundation.org +X-Mailman-Version: 2.1.12 +Precedence: list +List-Id: Bitcoin Protocol Discussion <bitcoin-dev.lists.linuxfoundation.org> +List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe> +List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/> +List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org> +List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help> +List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe> +X-List-Received-Date: Mon, 21 May 2018 03:57:10 -0000 + + +--cl5oyjjna7yuxyre +Content-Type: text/plain; charset=us-ascii +Content-Disposition: inline +Content-Transfer-Encoding: quoted-printable + +On Mon, May 21, 2018 at 01:14:06PM +0930, Rusty Russell via bitcoin-dev wro= +te: +> Jim Posen <jim.posen@gmail.com> writes: +> > I believe OP_CSV with a relative locktime of 0 could be used to enforce= + RBF +> > on the spending tx? +>=20 +> Marco points out that if the parent is RBF, this child inherits it, so +> we're actually good here. +>=20 +> However, Matt Corallo points out that you can block RBF will a +> large-but-lowball tx, as BIP 125 points out: +>=20 +> will be replaced by a new transaction...: +>=20 +> 3. The replacement transaction pays an absolute fee of at least the sum +> paid by the original transactions. +>=20 +> I understand implementing a single mempool requires these kind of +> up-front decisions on which tx is "better", but I wonder about the +> consequences of dropping this heuristic? Peter? + +We've discussed this before: that rule prevents bandwidth usage DoS attacks= + on +the mempool; it's not a "heuristic". If you drop it, an attacker can repeat= +edly +broadcast and replace a series of transactions to use up tx relay bandwidth= + for +significantly lower cost than otherwise. + +Though these days with relatively high minimum fees that may not matter. + +--=20 +https://petertodd.org 'peter'[:-1]@petertodd.org + +--cl5oyjjna7yuxyre +Content-Type: application/pgp-signature; name="signature.asc" + +-----BEGIN PGP SIGNATURE----- + +iQEzBAEBCAAdFiEEFcyURjhyM68BBPYTJIFAPaXwkfsFAlsCQ4cACgkQJIFAPaXw +kfug+wf/bw2RLQBetGf1URpG7WaljSMYwtJYS4uAMbFi7M1xcFm0BURMhhT+13Kp +v4bUkHMNYVF7p8Ut0w6pVzkmNedOQ9rYPqJORIbys8K4BUGFAoOA6oiDgz6EDdt0 +nMGduFII04xxICGHK83h0/57f/5s/UESkVhPMO4+y+55m37FcJ6pcWXWzsCbbatj +PX8sRc8vCnkjjkF5mK7ypl2vnaBdSpfEBWv2unkjLrcKo68Evrkn1pjdNwJuF+9h +lqQEdal5NWv2zprIOwQ1SUihMu8HT25+6mHKopZBbII1rOwDeGAetdthPMmFtZ1R +bcTbigCtA/zA9KcmdmQ4Unsl5zP4SA== +=R5me +-----END PGP SIGNATURE----- + +--cl5oyjjna7yuxyre-- + |