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Improve NODE_NETWORK_LIMITED documentation per BIP159

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This commit is contained in:
Jon Atack 2025-02-04 16:43:37 -06:00
parent a43f08c4ae
commit cce0c5b416
3 changed files with 6 additions and 7 deletions
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2
src/bitcoin-cli.cpp
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@ -704,7 +704,7 @@ public:
" \"b\" - BLOOM: peer can handle bloom-filtered connections (see BIP 111)\n"
" \"w\" - WITNESS: peer can be asked for blocks and transactions with witness data (SegWit)\n"
" \"c\" - COMPACT_FILTERS: peer can handle basic block filter requests (see BIPs 157 and 158)\n"
" \"l\" - NETWORK_LIMITED: peer limited to serving only the last 288 blocks (~2 days)\n"
" \"l\" - NETWORK_LIMITED: peer can serve at least the last 288 blocks (~2 days); see BIP 159\n"
" \"2\" - P2P_V2: peer supports version 2 P2P transport protocol, as defined in BIP 324\n"
" \"u\" - UNKNOWN: unrecognized bit flag\n"
" v Version of transport protocol used for the connection\n"

6
src/net_processing.cpp
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@ -1102,8 +1102,8 @@ static bool CanServeBlocks(const Peer& peer)
return peer.m_their_services & (NODE_NETWORK|NODE_NETWORK_LIMITED);
}
/** Whether this peer can only serve limited recent blocks (e.g. because
* it prunes old blocks) */
/** Whether this is a BIP159 peer that can only serve limited recent blocks
* (e.g. because it prunes old blocks) */
static bool IsLimitedPeer(const Peer& peer)
{
return (!(peer.m_their_services & NODE_NETWORK) &&
@ -1476,7 +1476,7 @@ void PeerManagerImpl::FindNextBlocks(std::vector<const CBlockIndex*>& vBlocks, c
return;
}
// Don't request blocks that go further than what limited peers can provide
// Don't request blocks beyond the minimum number that BIP159 limited peers must be able to provide.
if (is_limited_peer && (state->pindexBestKnownBlock->nHeight - pindex->nHeight >= static_cast<int>(NODE_NETWORK_LIMITED_MIN_BLOCKS) - 2 /* two blocks buffer for possible races */)) {
continue;
}

5
src/protocol.h
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@ -321,9 +321,8 @@ enum ServiceFlags : uint64_t {
// NODE_COMPACT_FILTERS means the node will service basic block filter requests.
// See BIP157 and BIP158 for details on how this is implemented.
NODE_COMPACT_FILTERS = (1 << 6),
// NODE_NETWORK_LIMITED means the same as NODE_NETWORK with the limitation of only
// serving the last 288 (2 day) blocks
// See BIP159 for details on how this is implemented.
// NODE_NETWORK_LIMITED indicates that the node can serve at least the last
// 288 blocks (~2 days). See BIP159 for details on how this is implemented.
NODE_NETWORK_LIMITED = (1 << 10),
// NODE_P2P_V2 means the node supports BIP324 transport