From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yh0-x22e.google.com (mail-yh0-x22e.google.com [IPv6:2607:f8b0:4002:c01::22e]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 4464721F349 for ; Sun, 21 Jun 2015 09:24:30 -0700 (PDT) Received: by yhpn97 with SMTP id n97so95038357yhp.0 for ; Sun, 21 Jun 2015 09:24:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=aU1mwxeMbXiYmEzOmSeXC9MhehSeYW2whScADKliNko=; b=IP0B9lbU1YBzekUqmFrdAeG2885WnvopnMsyBtfOzzhHESc/v9wIwQWk5Eyn1YJow0 6985F4Nz8jo24D+aju7nEUhoSvK3MnbLTkg9FEbvjrOyuAuqI+FLTcKNUxL5p366LcmR z95wbip283rj5jc5ZWs5Qhhopf94lZnfZImaLTxidR7yJDbPRleWsXYiNNPXpU0wd1qp 5l4VtazWu4HAwAlSLGRekOjZ6rlVLw3YsznEHH4D1RKm3cX2+BGxK8uezsqDPzMwnhDF DWteam3IYPRMd1VcGspnZgHPE9cymMRfikvKxkUMU/aLEgf4VNV75zAIXcMSa35fv7X5 gHcQ== MIME-Version: 1.0 X-Received: by 10.170.79.5 with SMTP id v5mr6231287ykv.15.1434903870016; Sun, 21 Jun 2015 09:24:30 -0700 (PDT) Received: by 10.129.148.194 with HTTP; Sun, 21 Jun 2015 09:24:29 -0700 (PDT) In-Reply-To: <87vbeh3wa9.wl-jch@pps.univ-paris-diderot.fr> References: <87vbeh3wa9.wl-jch@pps.univ-paris-diderot.fr> Date: Sun, 21 Jun 2015 11:24:29 -0500 Message-ID: From: Benjamin Cronce To: Juliusz Chroboczek Content-Type: multipart/alternative; boundary=001a113a08a2759433051909972e Cc: bloat Subject: Re: [Bloat] tackling torrent on a 10mbit uplink (100mbit down) X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Jun 2015 16:24:59 -0000 --001a113a08a2759433051909972e Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable They say "connection" but really mean a "state". Handshake completed or not, a state must be created. Most torrent clients also self limit the number of "half opened" connections, as not to kill your $200 firewall with a flood of new states. I've seen a default of between 10 and 50. On Sun, Jun 21, 2015 at 10:39 AM, Juliusz Chroboczek < jch@pps.univ-paris-diderot.fr> wrote: > >> https://torrentfreak.com/popular-torrents-being-sabotaged-by-ipv6-peer-f= lood-150619/ >> > > That's really strange =E2=80=94 it looks like =C2=B5Torrent is using up a= connection > slot even before the peer has performed the =C2=B5TP three-way handshake. > > -- Juliusz > > --001a113a08a2759433051909972e Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
They say "connection" but really mean a "st= ate". Handshake completed or not, a state must be created. Most torren= t clients also self limit the number of "half opened" connections= , as not to kill your $200 firewall with a flood of new states. I've se= en a default of between 10 and 50.

On Sun, Jun 21, 2015 at 10:39 AM, Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr> wrote:
https://torrentf= reak.com/popular-torrents-being-sabotaged-by-ipv6-peer-flood-150619/

That's really strange =E2=80=94 it looks like =C2=B5Torrent is using up= a connection slot even before the peer has performed the =C2=B5TP three-wa= y handshake.

-- Juliusz

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