Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from <gavinandresen@gmail.com>) id 1USp2A-0005H2-02 for bitcoin-development@lists.sourceforge.net; Thu, 18 Apr 2013 13:37:54 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of gmail.com designates 74.125.82.178 as permitted sender) client-ip=74.125.82.178; envelope-from=gavinandresen@gmail.com; helo=mail-we0-f178.google.com; Received: from mail-we0-f178.google.com ([74.125.82.178]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1USp29-0004Sp-7T for bitcoin-development@lists.sourceforge.net; Thu, 18 Apr 2013 13:37:53 +0000 Received: by mail-we0-f178.google.com with SMTP id z53so2263732wey.37 for <bitcoin-development@lists.sourceforge.net>; Thu, 18 Apr 2013 06:37:47 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.180.109.197 with SMTP id hu5mr18469132wib.22.1366292266882; Thu, 18 Apr 2013 06:37:46 -0700 (PDT) Received: by 10.194.143.36 with HTTP; Thu, 18 Apr 2013 06:37:46 -0700 (PDT) In-Reply-To: <CANEZrP0T7y8jqhMDUsf-HNw1sJnVuXngMa3x5+O5qgRE6eswew@mail.gmail.com> References: <CANEZrP1yKeQMayFHsEUWtA3=q+v5rPAutjzEFVVHopPGNZ4jGQ@mail.gmail.com> <453bfc69-b2ab-4992-9807-55270fbda0db@email.android.com> <CANEZrP0z6W0ZDsytQ7Rcqb5L6rswn1wv8cbR7c383Dmpzu+gyg@mail.gmail.com> <CAPaL=UVJd3mdd0bs6Oo9vFHnv_6RbFowjmp0tD-ZbOzZxJEJ3g@mail.gmail.com> <CANEZrP3ocAJNoQ3xJqRTL8Gz3_T8xsCPPAvSfEOYpPo76wgbig@mail.gmail.com> <20130418090444.GA30995@savin> <CANEZrP0AYaWnVhrAbMXP0BGhb=CZMg_-PYVzwKbcCoRKC9V2rw@mail.gmail.com> <20130418100806.GA13908@savin> <CANEZrP0T7y8jqhMDUsf-HNw1sJnVuXngMa3x5+O5qgRE6eswew@mail.gmail.com> Date: Thu, 18 Apr 2013 09:37:46 -0400 Message-ID: <CABsx9T18vvd1B4hSGU2eMnQTT9N-6Eoq29RAw_NiYdoNwe5uog@mail.gmail.com> From: Gavin Andresen <gavinandresen@gmail.com> To: Mike Hearn <mike@plan99.net> Content-Type: multipart/alternative; boundary=e89a8f2356f73a209b04daa2b568 X-Spam-Score: -0.6 (/) 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 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (gavinandresen[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 1.0 HTML_MESSAGE BODY: HTML included in message -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1USp29-0004Sp-7T Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net> Subject: Re: [Bitcoin-development] Anti DoS for tx replacement X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: <bitcoin-development.lists.sourceforge.net> List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, <mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe> List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development> List-Post: <mailto:bitcoin-development@lists.sourceforge.net> List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help> List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, <mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe> X-List-Received-Date: Thu, 18 Apr 2013 13:37:54 -0000 --e89a8f2356f73a209b04daa2b568 Content-Type: text/plain; charset=ISO-8859-1 > sure it's worth doing, at least immediately. Weakening the non-final == >> > non-standard test to give a window of, say, 3 blocks, would be fine I >> think. >> > > Sure. I think Gavin wants some kind of wider memory pool limiter policy > which would encompass such a thing already. > Yes. I don't want to spend any time thinking about memory pool transaction replacement until after we pay some technical debt: + Memory-limited memory pool, with relay policy matching block-creation policy + Child-pays-for-parent fees + Auto-computed fees, based on transactions moving from the memory pool into blocks -- -- Gavin Andresen --e89a8f2356f73a209b04daa2b568 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable =A0<br><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style= =3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir= =3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><div class= =3D"im"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex= ;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style= :solid;padding-left:1ex"> <div><span style=3D"color:rgb(34,34,34)">sure it's worth doing, at leas= t immediately. Weakening the non-final =3D=3D</span><br></div></blockquote>= <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-= left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p= adding-left:1ex"> non-standard test to give a window of, say, 3 blocks, would be fine I<br> think.<br></blockquote><div><br></div></div><div>Sure. I think Gavin wants = some kind of wider memory pool limiter policy which would encompass such a = thing already.</div></div></div></div></blockquote><div><br></div><div> Yes.</div><div><br></div><div>I don't want to spend any time thinking a= bout memory pool transaction replacement until after we pay some technical = debt:</div><div><br></div><div>+ Memory-limited memory pool, with relay pol= icy matching block-creation policy</div> <div>+ Child-pays-for-parent fees</div><div>+ Auto-computed fees, based on = transactions moving from the memory pool into blocks</div></div><br clear= =3D"all"><div><br></div>-- <br>--<br>Gavin Andresen<br> --e89a8f2356f73a209b04daa2b568--