From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1UYHef-0007Pk-Bc for bitcoin-development@lists.sourceforge.net; Fri, 03 May 2013 15:12:13 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.149.95 as permitted sender) client-ip=62.13.149.95; envelope-from=pete@petertodd.org; helo=outmail149095.authsmtp.com; Received: from outmail149095.authsmtp.com ([62.13.149.95]) by sog-mx-3.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1UYHec-00075L-Py for bitcoin-development@lists.sourceforge.net; Fri, 03 May 2013 15:12:13 +0000 Received: from mail-c226.authsmtp.com (mail-c226.authsmtp.com [62.13.128.226]) by punt7.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id r43FC3E1086997; Fri, 3 May 2013 16:12:03 +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 r43FBvOR048679 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Fri, 3 May 2013 16:11:59 +0100 (BST) Date: Fri, 3 May 2013 11:11:57 -0400 From: Peter Todd To: Mike Hearn Message-ID: <20130503151157.GA3902@petertodd.org> References: <20130503141801.GA1301@petertodd.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="y0ulUmNC+osPPQO6" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Server-Quench: cda1a7f5-b403-11e2-98a9-0025907ec6c5 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aQdMdgEUFVQNAgsB AmUbWlJeUV97WWM7 ag1VcwRfa1RMVxto VEFWR1pVCwQmQxgC cGxYLXtycw1Af3c+ ZEZlW3IVDxArdBd6 FEtJR2kGZnphaTUd 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: 1UYHec-00075L-Py 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 15:12:13 -0000 --y0ulUmNC+osPPQO6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, May 03, 2013 at 05:02:26PM +0200, Mike Hearn wrote: > > 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. > > >=20 > Don't the seeds already set small times? I'm not sure we want these > responses to be cacheable, otherwise there's a risk of a wall of traffic > suddenly showing up at one set of nodes if a large ISP caches a response. > (yes yes, I know, SPV node should be remembering addr broadcasts and such= ). Hmm, on second thought you're probably right for the standard case where it's really P2P. On the other hand it kinda limits us in the future if seeds have high-bandwidth nodes they can just point clients too, but maybe just assuming the DNS seed might need high bandwidth as well is acceptable. I dunno, given how badly behaved a lot of ISP dns servers are re: caching, maybe we're better off keeping it simple. --=20 'peter'[:-1]@petertodd.org 000000000000013bfdf35da40a40c35ccd75e09652ae541d94d26130a695f757 --y0ulUmNC+osPPQO6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAlGD070ACgkQpEFN739thoyfNwCeLlZLf+qJbEGnDygaYmWFolee DV0An10UZO+1KmxQR1rAVNzcl2ZvZsVw =k+6h -----END PGP SIGNATURE----- --y0ulUmNC+osPPQO6--