Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WlIpL-0004go-3R for bitcoin-development@lists.sourceforge.net; Fri, 16 May 2014 14:09:35 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.219.41 as permitted sender) client-ip=209.85.219.41; envelope-from=mh.in.england@gmail.com; helo=mail-oa0-f41.google.com; Received: from mail-oa0-f41.google.com ([209.85.219.41]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WlIpJ-0003CW-S7 for bitcoin-development@lists.sourceforge.net; Fri, 16 May 2014 14:09:35 +0000 Received: by mail-oa0-f41.google.com with SMTP id m1so3052469oag.14 for ; Fri, 16 May 2014 07:09:28 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.60.176.9 with SMTP id ce9mr17123933oec.55.1400249368251; Fri, 16 May 2014 07:09:28 -0700 (PDT) Sender: mh.in.england@gmail.com Received: by 10.76.71.162 with HTTP; Fri, 16 May 2014 07:09:28 -0700 (PDT) Received: by 10.76.71.162 with HTTP; Fri, 16 May 2014 07:09:28 -0700 (PDT) In-Reply-To: References: Date: Fri, 16 May 2014 16:09:28 +0200 X-Google-Sender-Auth: MaLD3btUffQBgQD9XhLP7FMQrFk Message-ID: From: Mike Hearn To: Andreas Schildbach Content-Type: multipart/alternative; boundary=089e0118226c31166b04f984f6dc X-Spam-Score: -0.5 (/) 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 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (mh.in.england[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 1.0 HTML_MESSAGE BODY: HTML included in message 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: 1WlIpJ-0003CW-S7 Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] DNS seeds unstable 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, 16 May 2014 14:09:35 -0000 --089e0118226c31166b04f984f6dc Content-Type: text/plain; charset=UTF-8 My android wallet is working OK. Yes it isn't great when seeds have temporary availability problems but things are still working. There's a couple of pull reqs outstanding to include hard coded seed peers and getaddr sourced IPs. Once those are finished and merged in there'll be more backup paths. On 16 May 2014 11:16, "Andreas Schildbach" wrote: > On 05/15/2014 07:48 PM, Gregory Maxwell wrote: > > On Thu, May 15, 2014 at 4:50 AM, Andreas Schildbach > > wrote: > >> I'm bringing this issue up again. The current Bitcoin DNS seed > >> infrastructure is unstable. I assume this is because of we're using a > >> custom DNS implementation which is not 100% compatible. There have been > >> bugs in the past, like a case sensitive match for the domain name. > > > > If software is using the DNS seeds in a way where one or two being > > unavailable is problematic, then the software may be using them > > poorly. > > > > Generally DNS seeds should only be used as fast connectivity hints, > > primarily for initial connectivity. Relying on them exclusively > > increases isolation vulnerabilities (e.g. because the dns seed > > operators or any ISP or network attacker on the path between you and > > the seeds can replace the results with ones that isolate you on a > > bogus network). > > I just used "nslookup", after seeing the issues in bitcoinj. > > I agree that clients should be robust regarding DNS lookups (and > bitcoinj isn't), but still I think the first step needs to be > maintaining a quality infrastructure. > > > > > ------------------------------------------------------------------------------ > "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE > Instantly run your Selenium tests across 300+ browser/OS combos. > Get unparalleled scalability from the best Selenium testing platform > available > Simple to use. Nothing to install. Get started now for free." > http://p.sf.net/sfu/SauceLabs > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > --089e0118226c31166b04f984f6dc Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

My android wallet is working OK. Yes it isn't great when= seeds have temporary availability problems but things are still working. <= /p>

There's a couple of pull reqs outstanding to include har= d coded seed peers and getaddr sourced IPs. Once those are finished and mer= ged in there'll be more backup paths.

On 16 May 2014 11:16, "Andreas Schildbach&q= uot; <andreas@schildbach.de= > wrote:
On 05/15/2014 07:48 PM, Gregory Maxwell wrote:
> On Thu, May 15, 2014 at 4:50 AM, Andreas Schildbach
> <andreas@schildbach.de= > wrote:
>> I'm bringing this issue up again. The current Bitcoin DNS seed=
>> infrastructure is unstable. I assume this is because of we're = using a
>> custom DNS implementation which is not 100% compatible. There have= been
>> bugs in the past, like a case sensitive match for the domain name.=
>
> If software is using the DNS seeds in a way where one or two being
> unavailable is problematic, then the software may be using them
> poorly.
>
> Generally DNS seeds should only be used as fast connectivity hints, > primarily for initial connectivity. Relying on them exclusively
> increases isolation vulnerabilities (e.g. because the dns seed
> operators or any ISP or network attacker on the path between you and > the seeds can replace the results with ones that isolate you on a
> bogus network).

I just used "nslookup", after seeing the issues in bitcoinj.

I agree that clients should be robust regarding DNS lookups (and
bitcoinj isn't), but still I think the first step needs to be
maintaining a quality infrastructure.



---------------------------------------------------------------------------= ---
"Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE=
Instantly run your Selenium tests across 300+ browser/OS combos.
Get unparalleled scalability from the best Selenium testing platform availa= ble
Simple to use. Nothing to install. Get started now for free."
http://p.sf.net= /sfu/SauceLabs
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Bitcoin-development mailing list
Bitcoin-develo= pment@lists.sourceforge.net
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