Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1UYGoS-00070g-Fx for bitcoin-development@lists.sourceforge.net; Fri, 03 May 2013 14:18:16 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.148.154 as permitted sender) client-ip=62.13.148.154; envelope-from=pete@petertodd.org; helo=outmail148154.authsmtp.co.uk; Received: from outmail148154.authsmtp.co.uk ([62.13.148.154]) by sog-mx-3.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1UYGoQ-0002II-Ka for bitcoin-development@lists.sourceforge.net; Fri, 03 May 2013 14:18:16 +0000 Received: from mail-c226.authsmtp.com (mail-c226.authsmtp.com [62.13.128.226]) by punt6.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id r43EI7ta046889; Fri, 3 May 2013 15:18:07 +0100 (BST) Received: from petertodd.org (petertodd.org [174.129.28.249]) (authenticated bits=128) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id r43EI1KA012375 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Fri, 3 May 2013 15:18:03 +0100 (BST) Date: Fri, 3 May 2013 10:18:01 -0400 From: Peter Todd To: Mike Hearn Message-ID: <20130503141801.GA1301@petertodd.org> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="wac7ysb48OaltWcw" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Server-Quench: 44eaf88e-b3fc-11e2-98a9-0025907ec6c5 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aQdMdgEUFVQNAgsB AmUbWlFeUVV7WWc7 ag1VcwRfa1RMVxto VEFWR1pVCwQmQxgC c2cfKWhydgdFf3s+ ZEZiXnQVWEAvJBB1 ShtJR25QNnphaTUd TUlQJgpJcANIexZF bQUsUiAILwdSbGoL NQ4vNDcwO3BTJTpY RgYVKF8UXXNDJTMm WREJEH0lHFEeDys0 NVQ+MEMaEUpZNEI+ PEBJ X-Authentic-SMTP: 61633532353630.1020:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 174.129.28.249/587 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: 1UYGoQ-0002II-Ka Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Service bits for pruned nodes 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: Fri, 03 May 2013 14:18:16 -0000 --wac7ysb48OaltWcw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, May 03, 2013 at 04:06:29PM +0200, Mike Hearn wrote: > That's true, but we can extend the DNS seeding protocol a little bit - you > could query .dnsseed.whatever.com and the DNS server > then only returns nodes it knows matches your requirement. If you're going to take a step like that, the should be rounded off, perhaps to some number of bits, or you'll allow DNS caching to be defeated. Make clients check for the largest "rounded off" value first, and then drill down if required. Some complexity involved... > This might complicate existing seeds a bit, and it's a bit of a hack, but > protocol-wise it's still possible. Of course if you want to add more > dimensions it gets uglier fast. Maybe I should make my blockheaders-over-dns thing production worthy first so we can see how many ISP's come at us with pitchforks? :P --=20 'peter'[:-1]@petertodd.org 00000000000000142de0244ee8fac516e7c0a29da1eafc0d43f2da8b6388b387 --wac7ysb48OaltWcw Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAlGDxxkACgkQpEFN739thowjtgCeKQcvIPQX5bVZyVGDY8JYTVFZ qOQAnA1V4/sAfwxZ8ESZRjcHwFeHT5un =Yirf -----END PGP SIGNATURE----- --wac7ysb48OaltWcw--