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Date: Tue, 20 May 2014 13:09:50 -0700
Message-ID: <CALKy-wp_d5Tzu2POai5gpe+EJUVGuOvN58aGu2WekBjkhNm8Gw@mail.gmail.com>
From: Andy Alness <andy@coinbase.com>
To: Jeff Garzik <jgarzik@bitpay.com>
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Cc: "bitcoin-development@lists.sourceforge.net"
	<bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Why are we bleeding nodes?
Precedence: list

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 <jgarzik@bitpay.com> 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 <andy@coinbase.com> 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 <will.yager@gmail.com> 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 <eugen@leitl.org>
>>>>
>>>> Could a blockchain fork due to network split happen?
>>>>
>>>
>>> -----------------------------------------------------------------------=
-------
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>>
>>
>>
>> --
>> 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
>> _______________________________________________
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>> Bitcoin-development@lists.sourceforge.net
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>
>
>
> --
> Jeff Garzik
> Bitcoin core developer and open source evangelist
> BitPay, Inc.      https://bitpay.com/


--=20
Andy Alness
Software Engineer
Coinbase
San Francisco, CA