Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id BB2599FA for ; Thu, 12 Jan 2017 19:58:40 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from outmail149058.authsmtp.co.uk (outmail149058.authsmtp.co.uk [62.13.149.58]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 5BC261FF for ; Thu, 12 Jan 2017 19:58:39 +0000 (UTC) Received: from mail-c247.authsmtp.com (mail-c247.authsmtp.com [62.13.128.247]) by punt20.authsmtp.com (8.14.2/8.14.2/) with ESMTP id v0CJwYjB052939; Thu, 12 Jan 2017 19:58:34 GMT Received: from petertodd.org (ec2-52-5-185-120.compute-1.amazonaws.com [52.5.185.120]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id v0CJwWWa001356 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 12 Jan 2017 19:58:33 GMT Received: from [127.0.0.1] (localhost [127.0.0.1]) by petertodd.org (Postfix) with ESMTPSA id BB49140576; Thu, 12 Jan 2017 19:58:31 +0000 (UTC) Received: by localhost (Postfix, from userid 1000) id C0E3C2007B; Thu, 12 Jan 2017 14:58:30 -0500 (EST) Date: Thu, 12 Jan 2017 14:58:30 -0500 From: Peter Todd To: Greg Sanders , Bitcoin Protocol Discussion Message-ID: <20170112195830.GA5663@savin.petertodd.org> References: <2ac49fb0-ff79-5cb9-7b92-14ec791ecc45@dyne.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="mP3DRpeJDSE+ciuQ" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-Server-Quench: 7f6547c0-d901-11e6-bcdf-0015176ca198 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aQdMdwAUElQaAgsB AmEbWl1eVVV7WmA7 bghPaBtcak9QXgdq T0pMXVMcUgUbe1tm YU8eUhhxcgMIcH5z YghlCHZeWEMpdVsp S05VCGwHMGF9OjNL Bl1YdwJRcQRMLU5E Y1gxNiYHcQ5VPz4z GA41ejw8IwAXFD5c RBoEJk4TRkBDJDMk QxkJEDAiG1FNTTR7 ARErQl4B X-Authentic-SMTP: 61633532353630.1038:706 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 Subject: Re: [bitcoin-dev] Transaction Replacement by Fee X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jan 2017 19:58:40 -0000 --mP3DRpeJDSE+ciuQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jan 12, 2017 at 09:13:23AM -0500, Greg Sanders via bitcoin-dev wrot= e: > BIP125 is the standard way to signal: > https://github.com/bitcoin/bips/blob/master/bip-0125.mediawiki >=20 > Should explain everything you need. Additionally some miners mine full replace-by-fee, which has no limitations= on nSequence. My implementation (for v0.13.2) is here: https://github.com/petertodd/bitcoin/tree/replace-by-fee-v0.13.2 and is identical to Bitcoin Core modulo the nSequence stuff being removed, = and a special service bit added to allow full-rbf nodes to preferentially peer = with each other to make sure replacement transactions get propagated. In practice full-RBF works fairly well, so while it's even faster to use the nSequence signalling specified in BIP-125, doing so is not mandatory so lon= g as you can et your replacement transaction to a full-RBF node. --=20 https://petertodd.org 'peter'[:-1]@petertodd.org --mP3DRpeJDSE+ciuQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJYd9/iAAoJECSBQD2l8JH7Jz0IAIqBYzDcmIkHEVZ3McdK9veQ dboyaOiGL572WBDjaH5k+MdBZ3jlXYiGMDhyDTrL8aO4wd6ndzANkdp8iU5L1IUL rB4H9XKFAS/eixpTGJVJxBouEjM+T7swU2FEdJEoN1kBEekJco9bQgqqdYTjKUyN RKl6rQD3ZIxVYtkFpve+IF0/iWno4lOpRPuoO2eJN8FpxIrocEqE7ZtBG1V4stbT /OFgEp7bfDyPma24I7IWZq2Zrz0w1o8DkB6NX+lbG1LAa3sB63ceZC6ewZKqkXwu rhW5fbCaxAHNVAJrv2PUUrrDR3j3Itz+XGrXzke4888Je0suCedB/e9WnNgvcEY= =Zr5s -----END PGP SIGNATURE----- --mP3DRpeJDSE+ciuQ--