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Fix underflow when blocks are ahead of headers

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This commit is contained in:
Pablo Greco 2023-02-15 13:12:51 -03:00
parent 718ac5bd6b
commit e7fea1d50b
3 changed files with 4 additions and 4 deletions
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4
src/net_processing.cpp
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@ -2015,7 +2015,7 @@ void PeerManagerImpl::ProcessHeadersMessage(CNode& pfrom, const Peer& peer,
// the received headers. We can still get ahead by up to a single maximum-sized
// headers message here, but never further, so that's fine.
if (pindexBestHeader) {
uint64_t headers_ahead = pindexBestHeader->nHeight - m_chainman.ActiveHeight();
int64_t headers_ahead = pindexBestHeader->nHeight - m_chainman.ActiveHeight();
bool too_far_ahead = fTrimHeaders && (headers_ahead >= nHeaderDownloadBuffer);
if (too_far_ahead) {
LOCK(cs_main);
@ -4532,7 +4532,7 @@ bool PeerManagerImpl::SendMessages(CNode* pto)
if (pindexBestHeader == nullptr)
pindexBestHeader = m_chainman.ActiveChain().Tip();
bool fFetch = state.fPreferredDownload || (nPreferredDownload == 0 && !pto->fClient && !pto->IsAddrFetchConn()); // Download if this is a nice peer, or we have no nice peers and this one might do.
uint64_t headers_ahead = pindexBestHeader->nHeight - m_chainman.ActiveHeight();
int64_t headers_ahead = pindexBestHeader->nHeight - m_chainman.ActiveHeight();
// ELEMENTS: Only download if our headers aren't "too far ahead" of our blocks.
bool got_enough_headers = fTrimHeaders && (headers_ahead >= nHeaderDownloadBuffer);
if (!state.fSyncStarted && !pto->fClient && !fImporting && !fReindex && !got_enough_headers) {