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Sync mempool from other nodes on start (#3251)

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* Sync mempool from other nodes on start

* Add `-syncmempool` cmd-line option to be able to disable mempool sync if needed

* Only sync mempool with outbound peers

Co-authored-by: Alexander Block <ablock84@gmail.com>
This commit is contained in:
UdjinM6 2020-01-01 17:13:04 +03:00
parent 474f25b8dc
commit 8e054f3742
3 changed files with 9 additions and 0 deletions
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1
src/init.cpp
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@ -465,6 +465,7 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageOpt("-minimumchainwork=<hex>", strprintf("Minimum work assumed to exist on a valid chain in hex (default: %s, testnet: %s)", defaultChainParams->GetConsensus().nMinimumChainWork.GetHex(), testnetChainParams->GetConsensus().nMinimumChainWork.GetHex()));
}
strUsage += HelpMessageOpt("-persistmempool", strprintf(_("Whether to save the mempool on shutdown and load on restart (default: %u)"), DEFAULT_PERSIST_MEMPOOL));
strUsage += HelpMessageOpt("-syncmempool", strprintf(_("Sync mempool from other nodes on start (default: %u)"), DEFAULT_SYNC_MEMPOOL));
strUsage += HelpMessageOpt("-blockreconstructionextratxn=<n>", strprintf(_("Extra transactions to keep in memory for compact block reconstructions (default: %u)"), DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN));
strUsage += HelpMessageOpt("-par=<n>", strprintf(_("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)"),
-GetNumCores(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS));

6
src/masternode/masternode-sync.cpp
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@ -208,6 +208,12 @@ void CMasternodeSync::ProcessTick(CConnman& connman)
// INITIAL TIMEOUT
if(nCurrentAsset == MASTERNODE_SYNC_WAITING) {
if(!pnode->fInbound && gArgs.GetBoolArg("-syncmempool", DEFAULT_SYNC_MEMPOOL) && !netfulfilledman.HasFulfilledRequest(pnode->addr, "mempool-sync")) {
netfulfilledman.AddFulfilledRequest(pnode->addr, "mempool-sync");
connman.PushMessage(pnode, msgMaker.Make(NetMsgType::MEMPOOL));
LogPrintf("CMasternodeSync::ProcessTick -- nTick %d nCurrentAsset %d -- syncing mempool from peer=%d\n", nTick, nCurrentAsset, pnode->GetId());
}
if(GetTime() - nTimeLastBumped > MASTERNODE_SYNC_TIMEOUT_SECONDS) {
// At this point we know that:
// a) there are peers (because we are looping on at least one of them);

2
src/validation.h
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@ -137,6 +137,8 @@ static const bool DEFAULT_SPENTINDEX = false;
static const unsigned int DEFAULT_BANSCORE_THRESHOLD = 100;
/** Default for -persistmempool */
static const bool DEFAULT_PERSIST_MEMPOOL = true;
/** Default for -syncmempool */
static const bool DEFAULT_SYNC_MEMPOOL = true;
/** Maximum number of headers to announce when relaying blocks with headers message.*/
static const unsigned int MAX_BLOCKS_TO_ANNOUNCE = 8;