Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1VBC84-0002Ui-ID for bitcoin-development@lists.sourceforge.net; Sun, 18 Aug 2013 23:11:24 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.148.93 as permitted sender) client-ip=62.13.148.93; envelope-from=pete@petertodd.org; helo=outmail148093.authsmtp.net; Received: from outmail148093.authsmtp.net ([62.13.148.93]) by sog-mx-4.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1VBC82-00059A-Gy for bitcoin-development@lists.sourceforge.net; Sun, 18 Aug 2013 23:11:24 +0000 Received: from mail-c226.authsmtp.com (mail-c226.authsmtp.com [62.13.128.226]) by punt14.authsmtp.com (8.14.2/8.14.2/) with ESMTP id r7INBFGi008971; Sun, 18 Aug 2013 23:11:15 GMT Received: from savin (76-10-178-109.dsl.teksavvy.com [76.10.178.109]) (authenticated bits=128) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id r7INBAY9014308 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Mon, 19 Aug 2013 00:11:12 +0100 (BST) Date: Sun, 18 Aug 2013 19:11:09 -0400 From: Peter Todd To: Gavin Andresen Message-ID: <20130818231109.GB23974@savin> References: <20130818025932.GA372@savin> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="K8nIJk4ghYZn606h" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Server-Quench: 7a0afeb6-085b-11e3-98a9-0025907ec6c5 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aQdMdwsUGUATAgsB AmUbW1ReUVx7WGA7 bAxPbAVDY01GQQRq WVdMSlVNFUsqBmV/ dG93WxlzcwZGcDBx ZUZmVj5cDUQrIxMv RFNUHWhUeGZhPWMC WUgJfh5UcAFPdx9C PwN5B3ZDAzANdhES HhM4ODE3eDlSNilR RRkIIFQOdA4tORIR cDomOhIKVWckf00A X-Authentic-SMTP: 61633532353630.1020:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 76.10.178.109/587 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Spam-Score: -1.5 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain -0.0 SPF_PASS SPF: sender matches SPF record X-Headers-End: 1VBC82-00059A-Gy Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] NODE_BLOOM BIP X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Aug 2013 23:11:24 -0000 --K8nIJk4ghYZn606h Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Aug 19, 2013 at 08:22:10AM +1000, Gavin Andresen wrote: > Mike pointed out exactly the reason I oppose a NODE_BLOOM service bit: I > also think it is a bad idea to start making various bits and pieces of the > protocol optional. > It is bad for privacy (easier to fingerprint nodes) and bad for > decentralization (fewer nodes support your required feature set). And eve= ry > bit you add can give you an exponential number of combinations your QA te= am > should test. Mike's and others have been talking about persistent node-specific identifiers, and after all at this level there are IP addresses; fingerprinting nodes is trivial. > I'd say the same thing about NODE_TRANSACTION ("I don't know about blocks, > have and NODE_BLOCK bits. We need options so peopl can contribute to relaying and the health of the network - these edge cases are going to be tested anyway by people like me deciding to disable bloom filtering. --=20 'peter'[:-1]@petertodd.org --K8nIJk4ghYZn606h Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBCAAGBQJSEVSNAAoJECSBQD2l8JH7X2oH/1CQwYkR7NsArhHVGcuTKiKv 1Jb9XEH8PplqzSdAaLCunHNQxTiMrn+Zw/WrVS7ZatlfAohId+T6NPshlw5hTEPh yh7jGVQq9PR3S9yh8/bDm3YBJjRuCSslj6LlbWfJA2PdMpHjclSWKIB7ucx5AciE 02Ax2HwFsiAHQbtBwhiv4BGJGFvXapb/jMpkjzA3rfGg4xyxWxCMaqKl8H/H4WQg v/kY0aC5QtVC+UoIOwMwJZYSRjcNa8iiXHVlq5bDbJ4u446LkS6ff1vkHrXM1SPF C7OUD4koaj2aRvnrPdQHHoOB32pLCjwba8q8tmlZVyIKQC10WhN0uL5K+p3qhVs= =P6cF -----END PGP SIGNATURE----- --K8nIJk4ghYZn606h--