public inbox for bitcoindev@googlegroups.com
 help / color / mirror / Atom feed
From: "Russell O'Connor" <roconnor@blockstream.io>
To: Rusty Russell <rusty@rustcorp.com.au>,
	 Bitcoin Protocol Discussion
	<bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] [PROPOSAL] Emergency RBF (BIP 125)
Date: Mon, 3 Jun 2019 08:56:42 -0400	[thread overview]
Message-ID: <CAMZUoKmXTONMqJ=0Vv7+e=q0CBL5h6Tio-5ec0bmZ+U4psOmCg@mail.gmail.com> (raw)
In-Reply-To: <871s0c1tvg.fsf@rustcorp.com.au>

[-- Attachment #1: Type: text/plain, Size: 913 bytes --]

Hi Rusty,

On Sun, Jun 2, 2019 at 9:21 AM Rusty Russell via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:

> The new "emergency RBF" rule:
>
>  6. If the original transaction was not in the first 4,000,000 weight
>     units of the fee-ordered mempool and the replacement transaction is,
>     rules 3, 4 and 5 do not apply.
>
> This means:
>
> 3. This proposal does not open any significant new ability to RBF spam,
>    since it can (usually) only be used once.  IIUC bitcoind won't
>    accept more that 100 descendents of an unconfirmed tx anyway.
>

Is it not possible for Alice to grief Bob's node by alternating RBFing two
transactions, each one placing itself at the bottom of Bob's top 4,000,000
weight mempool which pushes the other one below the top 4,000,000 weight,
and then repeating with the other transaction?  It might be possible to
amend this proposal to partially mitigate this.

[-- Attachment #2: Type: text/html, Size: 1317 bytes --]

  parent reply	other threads:[~2019-06-03 12:56 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-02  4:41 [bitcoin-dev] [PROPOSAL] Emergency RBF (BIP 125) Rusty Russell
2019-06-03  1:49 ` rhavar
2019-06-03  9:48 ` Matt Corallo
2019-06-06  5:16   ` Rusty Russell
2019-06-09 14:07     ` David A. Harding
2019-06-10 16:34       ` rhavar
2019-06-14  5:50       ` Rusty Russell
2019-06-03 12:56 ` Russell O'Connor [this message]
2019-06-06  3:08   ` Rusty Russell
2019-06-09  4:21     ` Russell O'Connor

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAMZUoKmXTONMqJ=0Vv7+e=q0CBL5h6Tio-5ec0bmZ+U4psOmCg@mail.gmail.com' \
    --to=roconnor@blockstream.io \
    --cc=bitcoin-dev@lists.linuxfoundation.org \
    --cc=rusty@rustcorp.com.au \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox