Sfoglia il codice sorgente

DOS: Respect max per-peer blocks in flight limit

Don't allow immediate inv driven block downloads if
a peer already has MAX_BLOCKS_IN_TRANSIT_PER_PEER
active downloads.  Prevents bogus inv spam from
blowing up block transfer tracking data structures.
tags/v0.15.1
Adam Weiss 6 anni fa
parent
commit
c90770430d
1 ha cambiato i file con 3 aggiunte e 1 eliminazioni
  1. 3
    1
      src/main.cpp

+ 3
- 1
src/main.cpp Vedi File

@@ -3574,7 +3574,9 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
// doing this will result in the received block being rejected as an orphan in case it is
// not a direct successor.
pfrom->PushMessage("getheaders", chainActive.GetLocator(pindexBestHeader), inv.hash);
if (chainActive.Tip()->GetBlockTime() > GetAdjustedTime() - Params().TargetSpacing() * 20) {
CNodeState *nodestate = State(pfrom->GetId());
if (chainActive.Tip()->GetBlockTime() > GetAdjustedTime() - Params().TargetSpacing() * 20 &&
nodestate->nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
vToFetch.push_back(inv);
// Mark block as in flight already, even though the actual "getdata" message only goes out
// later (within the same cs_main lock, though).

Loading…
Annulla
Salva