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Date: Thu, 17 Apr 2014 13:07:48 -0400
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From: Gavin Andresen <gavinandresen@gmail.com>
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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Timed testing
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On Thu, Apr 17, 2014 at 12:09 PM, Jorge Tim=C3=B3n <jtimon@monetize.io> wro=
te:
> So it seems a new mode only makes sense if the -private mode makes
> sense, which in turn only makes sense to include in bitcoind if it's
> useful enough for the network attack simulations, which remains the
> open question.
>
Unless I misunderstood what your private mode does, you can get the same
effect with -regtest by just controlling nodes connectivity. For example:
Start 2 nodes, connected to each other. Mine a -regtest chain they both
agree on.
Restart them so they're not connected. Have one mine normally,
have the other mine... however you like to simulate some attack (deep
chain re-org, double-spend,
whatever).
To simulate launching the attack, connect them together again, let the two
chains compete and see
what happens.
--=20
--
Gavin Andresen
--20cf3011dd8597e92e04f7401245
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">On T=
hu, Apr 17, 2014 at 12:09 PM, Jorge Tim=C3=B3n <span dir=3D"ltr"><<a hre=
f=3D"mailto:jtimon@monetize.io" target=3D"_blank">jtimon@monetize.io</a>>=
;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div class=3D"HOEnZb"><div class=3D"h5"><spa=
n style=3D"color:rgb(34,34,34)">So it seems a new mode only makes sense if =
the -private mode makes</span><br>
</div></div>
sense, which in turn only makes sense to include in bitcoind if it's<br=
>
useful enough for the network attack simulations, which remains the<br>
open question.<br>
</blockquote></div><br>Unless I misunderstood what your private mode does, =
you can get the same</div><div class=3D"gmail_extra">effect with -regtest b=
y just controlling nodes connectivity. For example:</div><div class=3D"gmai=
l_extra">
<br></div><div class=3D"gmail_extra">Start 2 nodes, connected to each other=
. Mine a -regtest chain they both agree on.</div><div class=3D"gmail_extra"=
><br></div><div class=3D"gmail_extra">Restart them so they're not conne=
cted. =C2=A0Have one mine normally,</div>
<div class=3D"gmail_extra">have the other =C2=A0mine... however you like to=
simulate some attack (deep chain re-org, double-spend,</div><div class=3D"=
gmail_extra">whatever).</div><div class=3D"gmail_extra"><div><br></div><div=
>To simulate launching the attack, connect them together again, let the two=
chains compete and see</div>
<div>what happens.</div><div><br></div><div>--=C2=A0<br></div>--<br>Gavin A=
ndresen<br>
</div></div>
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