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From: Matt Whitlock <bip@mattwhitlock.name>
To: Jim Phillips <jim@ergophobia.org>
Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] Zero-Conf for Full Node Discovery
Date: Tue, 26 May 2015 00:37:18 -0400	[thread overview]
Message-ID: <2916218.tfdjj1Sv9m@crushinator> (raw)
In-Reply-To: <CANe1mWwi+fxFU43_2mq-yd_qRsmCwMu_c5wWOpvFS4Un_FoT+Q@mail.gmail.com>

This is very simple to do. Just ping the "all nodes" address (ff02::1) and try connecting to TCP port 8333 of each node that responds. Shouldn't take but more than a few milliseconds on any but the most densely populated LANs.


On Monday, 25 May 2015, at 11:06 pm, Jim Phillips wrote:
> Is there any work being done on using some kind of zero-conf service
> discovery protocol so that lightweight clients can find a full node on the
> same LAN to peer with rather than having to tie up WAN bandwidth?
> 
> I envision a future where lightweight devices within a home use SPV over
> WiFi to connect with a home server which in turn relays the transactions
> they create out to the larger and faster relays on the Internet.
> 
> In a situation where there are hundreds or thousands of small SPV devices
> in a single home (if 21, Inc. is successful) monitoring the blockchain,
> this could result in lower traffic across the slow WAN connection.  And
> yes, I realize it could potentially take a LOT of these devices before the
> total bandwidth is greater than downloading a full copy of the blockchain,
> but there's other reasons to host your own full node -- trust being one.
> 
> --
> *James G. Phillips IV*
> <https://plus.google.com/u/0/113107039501292625391/posts>
> <http://www.linkedin.com/in/ergophobe>
> 
> *"Don't bunt. Aim out of the ball park. Aim for the company of immortals."
> -- David Ogilvy*
> 
>  *This message was created with 100% recycled electrons. Please think twice
> before printing.*



  reply	other threads:[~2015-05-26  4:37 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-26  4:06 [Bitcoin-development] Zero-Conf for Full Node Discovery Jim Phillips
2015-05-26  4:37 ` Matt Whitlock [this message]
2015-05-26  4:46   ` Kevin Greene
2015-05-26  4:56     ` Matt Whitlock
2015-05-26  5:12       ` Kevin Greene
2015-05-26  5:23     ` Luke Dashjr
2015-05-26  4:48   ` Jim Phillips
2015-05-26  4:52     ` Matt Whitlock
2015-05-26  5:15       ` Peter Todd
2015-05-26  5:47         ` Matt Whitlock
2015-05-26 10:48           ` Mike Hearn
2015-05-27 10:16             ` Louis Rossouw

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