From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WmqMX-0002s3-1g for bitcoin-development@lists.sourceforge.net; Tue, 20 May 2014 20:10:13 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of coinbase.com designates 209.85.213.182 as permitted sender) client-ip=209.85.213.182; envelope-from=andy@coinbase.com; helo=mail-ig0-f182.google.com; Received: from mail-ig0-f182.google.com ([209.85.213.182]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WmqMH-00088i-03 for bitcoin-development@lists.sourceforge.net; Tue, 20 May 2014 20:10:13 +0000 Received: by mail-ig0-f182.google.com with SMTP id uy17so1234527igb.3 for ; Tue, 20 May 2014 13:09:50 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=Y/u/2y+cQZO5RiiSPVzqkfKEco4qwZcZAW7czwx6s1A=; b=VWD4s7NesyEd9hs0ZU+eDp6exdq7YmLikzElWfKu3yxsqoWhB8Fbfmz4zVM3me2kI/ 69Yzq++wyvVKXHa7wutSMuV0u9jnyg5mr3pEA/iM/58PLZdv5iBU845hAEeBJRIA5knu 4axVg3JB4LQN2czFBJ5jTlR21slkkPsIpCndMvAbn2Pln6PDGL3S0Ic38d44751kH5HR 1/foDkl5VtHgp+t87HMcv85sGmgWQzSlMHtCH42EN/ylIoVjHW/cwE6t0D8e2tlMhE3C +MClcxtyamcXqH7IdMUcGrayF7ebBmBw8yuXy9R7za65o/gxT5xP7Esxohd76USXsoM3 srKg== X-Gm-Message-State: ALoCoQmayq+9KRcUMZnMAyLt54T8YfZQ/GeXGafUFlQPlGWBmrHc1wLaRV/UMzxRunGpi3cIvelO MIME-Version: 1.0 X-Received: by 10.50.253.163 with SMTP id ab3mr8108974igd.35.1400616590691; Tue, 20 May 2014 13:09:50 -0700 (PDT) Received: by 10.42.39.3 with HTTP; Tue, 20 May 2014 13:09:50 -0700 (PDT) In-Reply-To: References: <20140520143710.GT26986@leitl.org> <4078A034-6626-495D-B42F-BDA94ACE1DA3@gmail.com> Date: Tue, 20 May 2014 13:09:50 -0700 Message-ID: From: Andy Alness To: Jeff Garzik Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -1.5 (-) 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 SPF_PASS SPF: sender matches SPF record 0.0 TIME_LIMIT_EXCEEDED Exceeded time limit / deadline X-Headers-End: 1WmqMH-00088i-03 Cc: "bitcoin-development@lists.sourceforge.net" Subject: Re: [Bitcoin-development] Why are we bleeding nodes? 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: Tue, 20 May 2014 20:10:13 -0000 Awesome! I'm assuming this is it: https://bitcointalk.org/index.php?topic=3D156769.0 It would be interesting (at least to me) to take this a step further and offer UDP as a full TCP replacement capable of STUN-assisted NAT traversal and possibly swarmed blockchain syncs. It would require open TCP nodes to facilitate "connection" establishment. It is obviously a non-trivial amount of work but would be an interesting experiment. Maybe BitTorrent's =C2=B5TP protocol could be leveraged. On Tue, May 20, 2014 at 12:17 PM, Jeff Garzik wrote: > Yes, i spec'd out the UDP traversal of the P2P protocol. It seems > reasonable especially for "inv" messages. > > On Tue, May 20, 2014 at 2:46 PM, Andy Alness wrote: >> Has there ever been serious discussion on extending the protocol to >> support UDP transport? That would allow for NAT traversal and for many >> more people to run effective nodes. I'm also curious if it could be >> made improve block propagation time. >> >> On Tue, May 20, 2014 at 7:52 AM, Gmail wrote: >>> Unlikely. I doubt any significant portion of miners in china will conti= nue to mine on a china-specific chain, since it will certainly be outmined = by non-Chinese miners, and will be orphaned eventually. >>> >>> More likely is that mining interests in china will make special arrange= ments to circumvent the GFwOC. >>> >>> Users who can't access the worldwide blockchain will notice horrendousl= y slow confirmation times and other side effects. >>> >>>> On May 20, 2014, at 10:37, Eugen Leitl >>>> >>>> Could a blockchain fork due to network split happen? >>>> >>> >>> -----------------------------------------------------------------------= ------- >>> "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 av= ailable >>> 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 >>> >> >> >> >> -- >> Andy Alness >> Software Engineer >> Coinbase >> San Francisco, CA >> >> ------------------------------------------------------------------------= ------ >> "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 ava= ilable >> 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 > > > > -- > Jeff Garzik > Bitcoin core developer and open source evangelist > BitPay, Inc. https://bitpay.com/ --=20 Andy Alness Software Engineer Coinbase San Francisco, CA