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Merge pull request #617 from MarcoFalke/Mf1712-bip159rework

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bip159: Clarify that there is only one threshold
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Luke Dashjr 2017-12-19 19:10:37 +00:00 • committed by GitHub
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@ -31,10 +31,10 @@ This BIP proposes a new service bit
{|class="wikitable"
|-
| NODE_NETWORK_LIMITED || bit 10 (0x400) || If signaled, the peer <I>MUST</I> be capable of serving at least the last 288 blocks (~2 day / the current minimum limit for Bitcoin Core).
| NODE_NETWORK_LIMITED || bit 10 (0x400) || If signaled, the peer <I>MUST</I> be capable of serving at least the last 288 blocks (~2 days).
|}
A safety buffer of additional 144 blocks to handle chain reorganizations <I>SHOULD</I> be taken into account when connecting to a peer signaling the <code>NODE_NETWORK_LIMITED</code> service bit.
A safety buffer of 144 blocks to handle chain reorganizations <I>SHOULD</I> be taken into account when connecting to a peer signaling the <code>NODE_NETWORK_LIMITED</code> service bit.
=== Address relay ===
@ -42,7 +42,7 @@ Full nodes following this BIP <I>SHOULD</I> relay address/services (<code>addr</
=== Counter-measures for peer fingerprinting ===
Peers may have different prune depths (depending on the peers configuration, disk space, etc.) which can result in a fingerprinting weakness (finding the prune depth through getdata requests). NODE_NETWORK_LIMITED supporting peers <I>SHOULD</I> avoid leaking the prune depth and therefore not serve blocks deeper then the signaled <code>NODE_NETWORK_LIMITED</code> thresholds.
Peers may have different prune depths (depending on the peers configuration, disk space, etc.) which can result in a fingerprinting weakness (finding the prune depth through getdata requests). NODE_NETWORK_LIMITED supporting peers <I>SHOULD</I> avoid leaking the prune depth and therefore not serve blocks deeper than the signaled <code>NODE_NETWORK_LIMITED</code> threshold (244 blocks).
=== Risks ===
@ -56,10 +56,8 @@ This proposal is backward compatible.
== Reference implementation ==
* https://github.com/bitcoin/bitcoin/pull/10387
== References ==
* https://github.com/bitcoin/bitcoin/pull/11740 (signaling)
* https://github.com/bitcoin/bitcoin/pull/10387 (connection and relay)
== Copyright ==