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P2P: Do not request blocks from peers with fewer blocks than us

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If the remote node has a shorter chain, do not waste our
special getblocks request on them.
This commit is contained in:
Jeff Garzik 2012-09-24 13:26:09 -04:00 committed by Jeff Garzik
parent 6cbae37667
commit 93dd68e924
1 changed files with 1 additions and 0 deletions
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src/main.cpp
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@ -2513,6 +2513,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
// Ask the first connected node for block updates // Ask the first connected node for block updates
static int nAskedForBlocks = 0; static int nAskedForBlocks = 0;
if (!pfrom->fClient && !pfrom->fOneShot && if (!pfrom->fClient && !pfrom->fOneShot &&
(pfrom->nStartingHeight > (nBestHeight - 144)) &&
(pfrom->nVersion < NOBLKS_VERSION_START || (pfrom->nVersion < NOBLKS_VERSION_START ||
pfrom->nVersion >= NOBLKS_VERSION_END) && pfrom->nVersion >= NOBLKS_VERSION_END) &&
(nAskedForBlocks < 1 || vNodes.size() <= 1)) (nAskedForBlocks < 1 || vNodes.size() <= 1))