diff options
Diffstat (limited to 'src/net_processing.cpp')
| -rw-r--r-- | src/net_processing.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp index 442cd00c9b..85e6d9c73d 100644 --- a/src/net_processing.cpp +++ b/src/net_processing.cpp @@ -1091,6 +1091,16 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam pfrom->fDisconnect = true; send = false; } + // Avoid leaking prune-height by never sending blocks below the NODE_NETWORK_LIMITED threshold + if (send && !pfrom->fWhitelisted && ( + (((pfrom->GetLocalServices() & NODE_NETWORK_LIMITED) == NODE_NETWORK_LIMITED) && ((pfrom->GetLocalServices() & NODE_NETWORK) != NODE_NETWORK) && (chainActive.Tip()->nHeight - mi->second->nHeight > (int)NODE_NETWORK_LIMITED_MIN_BLOCKS + 2 /* add two blocks buffer extension for possible races */) ) + )) { + LogPrint(BCLog::NET, "Ignore block request below NODE_NETWORK_LIMITED threshold from peer=%d\n", pfrom->GetId()); + + //disconnect node and prevent it from stalling (would otherwise wait for the missing block) + pfrom->fDisconnect = true; + send = false; + } // Pruned nodes may have deleted the block, so check whether // it's available before trying to send. if (send && (mi->second->nStatus & BLOCK_HAVE_DATA)) |