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Describe Hardcoded Peers & BCCore Command-Line Fallbacks

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Suggested by @gmaxwell (thanks!)
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David A. Harding 2014-10-25 17:42:09 -04:00
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22
_includes/guide_p2p_network.md
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@ -89,9 +89,29 @@ its peer database, it spends up to 11 seconds attempting to connect to
at least one of them before falling back to seeds; if a connection is
made within that time, it does not query any seeds.
<!-- reference for Bitcoin Core behavior described below: search for
"FixedSeeds" in src/net.cpp; BitcoinJ has IPv4 seeds in its chainparams
and a function to use them, but I don't see that function being used in
any of the examples/wallet templates (but I'm not Java fluent, so
maybe PEBKAC). -@harding -->
Both Bitcoin Core and BitcoinJ also include a hardcoded list of IP
addresses and port numbers to several dozen nodes which were active
around the time that particular version of the software was first
released. Bitcoin Core will start attempting to connect to these nodes
if none of the DNS seed servers have responded to a query within 60
seconds, providing an automatic fallback option.
As a manual fallback option, Bitcoin Core also provides several
command-line connection options, including the ability to get a list of
peers from a specific node by IP address, or to make a persistent
connection to a specific node by IP address. See the `-help` text for
details. BitcoinJ can be programmed to do the same thing.
**Resources:** [Bitcoin Seeder][], the program run by several of the
seeds used by Bitcoin Core and BitcoinJ. The Bitcoin Core [DNS Seed
Policy][].
Policy][]. The hardcoded list of IP addresses used by Bitcoin Core and
BitcoinJ is generated using the [makeseeds script][].
{% endautocrossref %}

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_includes/references.md
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@ -310,6 +310,7 @@
[HTTP longpoll]: https://en.wikipedia.org/wiki/Push_technology#Long_polling
[irc channels]: https://en.bitcoin.it/wiki/IRC_channels
[libblkmaker]: https://gitorious.org/bitcoin/libblkmaker
[makeseeds script]: https://github.com/bitcoin/bitcoin/tree/master/contrib/seeds
[man-in-the-middle]: https://en.wikipedia.org/wiki/Man-in-the-middle_attack
[MIME]: https://en.wikipedia.org/wiki/Internet_media_type
[mozrootstore]: https://www.mozilla.org/en-US/about/governance/policies/security-group/certs/