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Merge bitcoin/bitcoin#26382: [24.x] p2p: Handle IsContinuationOfLowWorkHeadersSync return value correctly when new headers sync is started

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e23def8fcc [net processing] Handle IsContinuationOfLowWorkHeadersSync return value correctly when new headers sync is started (dergoegge)

Pull request description:

  Backport of #26355.

ACKs for top commit:
  dergoegge:
    ACK e23def8fcc
  stickies-v:
    ACK e23def8fcc

Tree-SHA512: 051ecb08f1f96557b5b6d01cc9d29a5dfabbb48afffd52cba662251c23277938fcbb6f207fc7575774ef627a9484ceb056cc75476861b920723c35c2f5da36c8
This commit is contained in:
glozow 2022-10-27 13:38:01 +01:00
commit d22cc74837
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1 changed files with 12 additions and 4 deletions
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16
src/net_processing.cpp
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@ -2559,14 +2559,22 @@ bool PeerManagerImpl::TryLowWorkHeadersSync(Peer& peer, CNode& pfrom, const CBlo
// Now a HeadersSyncState object for tracking this synchronization is created,
// process the headers using it as normal.
return IsContinuationOfLowWorkHeadersSync(peer, pfrom, headers);
if (!IsContinuationOfLowWorkHeadersSync(peer, pfrom, headers)) {
// Something went wrong, reset the headers sync.
peer.m_headers_sync.reset(nullptr);
LOCK(m_headers_presync_mutex);
m_headers_presync_stats.erase(peer.m_id);
}
} else {
LogPrint(BCLog::NET, "Ignoring low-work chain (height=%u) from peer=%d\n", chain_start_header->nHeight + headers.size(), pfrom.GetId());
// Since this is a low-work headers chain, no further processing is required.
headers = {};
return true;
}
// The peer has not yet given us a chain that meets our work threshold,
// so we want to prevent further processing of the headers in any case.
headers = {};
return true;
}
return false;
}