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Merge 5f65afff9c into merged_master (Bitcoin PR bitcoin/bitcoin#24178)

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James Dorfman 2024-09-06 18:21:45 +00:00
commit 1aff5fa9e9
2 changed files with 37 additions and 2 deletions
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18
src/net_processing.cpp
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@ -3351,9 +3351,23 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
return;
}
if (fImporting || fReindex) {
LogPrint(BCLog::NET, "Ignoring getheaders from peer=%d while importing/reindexing\n", pfrom.GetId());
return;
}
LOCK(cs_main);
if (m_chainman.ActiveChainstate().IsInitialBlockDownload() && !pfrom.HasPermission(NetPermissionFlags::Download)) {
LogPrint(BCLog::NET, "Ignoring getheaders from peer=%d because node is in initial block download\n", pfrom.GetId());
// Note that if we were to be on a chain that forks from the checkpointed
// chain, then serving those headers to a peer that has seen the
// checkpointed chain would cause that peer to disconnect us. Requiring
// that our chainwork exceed nMinimumChainWork is a protection against
// being fed a bogus chain when we started up for the first time and
// getting partitioned off the honest network for serving that chain to
// others.
if (m_chainman.ActiveTip() == nullptr ||
(m_chainman.ActiveTip()->nChainWork < nMinimumChainWork && !pfrom.HasPermission(NetPermissionFlags::Download))) {
LogPrint(BCLog::NET, "Ignoring getheaders from peer=%d because active chain has too little work\n", pfrom.GetId());
return;
}