Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WmqYp-00080V-4v for bitcoin-development@lists.sourceforge.net; Tue, 20 May 2014 20:22:55 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of bitpay.com designates 209.85.212.181 as permitted sender) client-ip=209.85.212.181; envelope-from=jgarzik@bitpay.com; helo=mail-wi0-f181.google.com; Received: from mail-wi0-f181.google.com ([209.85.212.181]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WmqYo-000052-0d for bitcoin-development@lists.sourceforge.net; Tue, 20 May 2014 20:22:55 +0000 Received: by mail-wi0-f181.google.com with SMTP id n15so1642011wiw.2 for ; Tue, 20 May 2014 13:22:47 -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:from:date :message-id:subject:to:cc:content-type:content-transfer-encoding; bh=1PoI3nmxqoS7N3knDMIXEr80e8R1N5n3iTLeZGdYfQc=; b=StmyS5ECWAxxqbfQ/sCR8xkKNT9t/lzGRNLm/vzqgma/M8wUk2scqMBgZrPcNoI7Lt 26THnJLc0QoYZZKoTTy3HhAeL6vBQUyo61veHr7JKqsyaed+58AZePZqOPJ2hfEqEZ0D 6w208KFVhTP9t+ee8nJQnVFwfr4RYU7FrAUD2dXwxtodROTyF5P7GvLdL2+ukgjD3GV0 ZX2MhII9aMaz6Z1YBK66dHarLYLrovIz9yFLOFRYdjypBh8efgBW5hOy8mEjv8swpSpd 8HDoTUapCuykBl3AIhwvK1cBoMLnR7jEF+CEuJEpd95gRYars19XxHOAVwq8XtE7RVmT YiXQ== X-Gm-Message-State: ALoCoQkMrK/Z1ScDE99QJR8mRhCyykQLDoRL/BacAKGvKuUP/rEGjy8bJrFJlw7be2TxfzN2Jozx X-Received: by 10.194.8.229 with SMTP id u5mr12442230wja.65.1400617367742; Tue, 20 May 2014 13:22:47 -0700 (PDT) MIME-Version: 1.0 Received: by 10.194.240.166 with HTTP; Tue, 20 May 2014 13:22:27 -0700 (PDT) In-Reply-To: References: <20140520143710.GT26986@leitl.org> <4078A034-6626-495D-B42F-BDA94ACE1DA3@gmail.com> From: Jeff Garzik Date: Tue, 20 May 2014 16:22:27 -0400 Message-ID: To: Andy Alness Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -1.6 (-) 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 -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 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: 1WmqYo-000052-0d 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 20:22:55 -0000 Indeed -- you must reinvent TCP over UDP, ultimately, to handle blocks and large TXs. On Tue, May 20, 2014 at 4:09 PM, Andy Alness wrote: > 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 cont= inue 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 arrang= ements to circumvent the GFwOC. >>>> >>>> Users who can't access the worldwide blockchain will notice horrendous= ly 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 a= vailable >>>> 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 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 >> >> >> >> -- >> Jeff Garzik >> Bitcoin core developer and open source evangelist >> BitPay, Inc. https://bitpay.com/ > > > > -- > Andy Alness > Software Engineer > Coinbase > San Francisco, CA --=20 Jeff Garzik Bitcoin core developer and open source evangelist BitPay, Inc. https://bitpay.com/