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-rw-r--r--src/net_processing.cpp80
1 files changed, 57 insertions, 23 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 3102c2ef9a..b9357440e9 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -30,8 +30,6 @@
#include "utilstrencodings.h"
#include "validationinterface.h"
-#include <boost/thread.hpp>
-
#if defined(NDEBUG)
# error "Bitcoin cannot be compiled without assertions."
#endif
@@ -168,6 +166,8 @@ struct CNodeState {
int nUnconnectingHeaders;
//! Whether we've started headers synchronization with this peer.
bool fSyncStarted;
+ //! When to potentially disconnect peer for stalling headers download
+ int64_t nHeadersSyncTimeout;
//! Since when we're stalling block download progress (in microseconds), or 0.
int64_t nStallingSince;
std::list<QueuedBlock> vBlocksInFlight;
@@ -207,6 +207,7 @@ struct CNodeState {
pindexBestHeaderSent = NULL;
nUnconnectingHeaders = 0;
fSyncStarted = false;
+ nHeadersSyncTimeout = 0;
nStallingSince = 0;
nDownloadingSince = 0;
nBlocksInFlight = 0;
@@ -287,7 +288,7 @@ void FinalizeNode(NodeId nodeid, bool& fUpdateConnectionTime) {
fUpdateConnectionTime = true;
}
- BOOST_FOREACH(const QueuedBlock& entry, state->vBlocksInFlight) {
+ for (const QueuedBlock& entry : state->vBlocksInFlight) {
mapBlocksInFlight.erase(entry.hash);
}
EraseOrphansFor(nodeid);
@@ -481,7 +482,7 @@ void FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<con
// Make sure pindexBestKnownBlock is up to date, we'll need it.
ProcessBlockAvailability(nodeid);
- if (state->pindexBestKnownBlock == NULL || state->pindexBestKnownBlock->nChainWork < chainActive.Tip()->nChainWork) {
+ if (state->pindexBestKnownBlock == NULL || state->pindexBestKnownBlock->nChainWork < chainActive.Tip()->nChainWork || state->pindexBestKnownBlock->nChainWork < UintToArith256(consensusParams.nMinimumChainWork)) {
// This peer has nothing interesting.
return;
}
@@ -522,7 +523,7 @@ void FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<con
// are not yet downloaded and not in flight to vBlocks. In the mean time, update
// pindexLastCommonBlock as long as all ancestors are already downloaded, or if it's
// already part of our chain (and therefore don't need it even if pruned).
- BOOST_FOREACH(const CBlockIndex* pindex, vToFetch) {
+ for (const CBlockIndex* pindex : vToFetch) {
if (!pindex->IsValid(BLOCK_VALID_TREE)) {
// We consider the chain that this peer is on invalid.
return;
@@ -566,7 +567,7 @@ bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats) {
stats.nMisbehavior = state->nMisbehavior;
stats.nSyncHeight = state->pindexBestKnownBlock ? state->pindexBestKnownBlock->nHeight : -1;
stats.nCommonHeight = state->pindexLastCommonBlock ? state->pindexLastCommonBlock->nHeight : -1;
- BOOST_FOREACH(const QueuedBlock& queue, state->vBlocksInFlight) {
+ for (const QueuedBlock& queue : state->vBlocksInFlight) {
if (queue.pindex)
stats.vHeightInFlight.push_back(queue.pindex->nHeight);
}
@@ -627,7 +628,7 @@ bool AddOrphanTx(const CTransactionRef& tx, NodeId peer) EXCLUSIVE_LOCKS_REQUIRE
auto ret = mapOrphanTransactions.emplace(hash, COrphanTx{tx, peer, GetTime() + ORPHAN_TX_EXPIRE_TIME});
assert(ret.second);
- BOOST_FOREACH(const CTxIn& txin, tx->vin) {
+ for (const CTxIn& txin : tx->vin) {
mapOrphanTransactionsByPrev[txin.prevout].insert(ret.first);
}
@@ -643,7 +644,7 @@ int static EraseOrphanTx(uint256 hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
std::map<uint256, COrphanTx>::iterator it = mapOrphanTransactions.find(hash);
if (it == mapOrphanTransactions.end())
return 0;
- BOOST_FOREACH(const CTxIn& txin, it->second.tx->vin)
+ for (const CTxIn& txin : it->second.tx->vin)
{
auto itPrev = mapOrphanTransactionsByPrev.find(txin.prevout);
if (itPrev == mapOrphanTransactionsByPrev.end())
@@ -768,7 +769,7 @@ void PeerLogicValidation::BlockConnected(const std::shared_ptr<const CBlock>& pb
// Erase orphan transactions include or precluded by this block
if (vOrphanErase.size()) {
int nErased = 0;
- BOOST_FOREACH(uint256 &orphanHash, vOrphanErase) {
+ for (uint256 &orphanHash : vOrphanErase) {
nErased += EraseOrphanTx(orphanHash);
}
LogPrint(BCLog::MEMPOOL, "Erased %d orphan tx included or conflicted by block\n", nErased);
@@ -911,12 +912,11 @@ bool static AlreadyHave(const CInv& inv) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
recentRejects->reset();
}
- // Use pcoinsTip->HaveCoinsInCache as a quick approximation to exclude
- // requesting or processing some txs which have already been included in a block
return recentRejects->contains(inv.hash) ||
mempool.exists(inv.hash) ||
mapOrphanTransactions.count(inv.hash) ||
- pcoinsTip->HaveCoinsInCache(inv.hash);
+ pcoinsTip->HaveCoinInCache(COutPoint(inv.hash, 0)) || // Best effort: only try output 0 and 1
+ pcoinsTip->HaveCoinInCache(COutPoint(inv.hash, 1));
}
case MSG_BLOCK:
case MSG_WITNESS_BLOCK:
@@ -1079,7 +1079,7 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam
// Thus, the protocol spec specified allows for us to provide duplicate txn here,
// however we MUST always provide at least what the remote peer needs
typedef std::pair<unsigned int, uint256> PairType;
- BOOST_FOREACH(PairType& pair, merkleBlock.vMatchedTxn)
+ for (PairType& pair : merkleBlock.vMatchedTxn)
connman.PushMessage(pfrom, msgMaker.Make(SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::TX, *pblock->vtx[pair.first]));
}
// else
@@ -1474,7 +1474,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
std::vector<CAddress> vAddrOk;
int64_t nNow = GetAdjustedTime();
int64_t nSince = nNow - 10 * 60;
- BOOST_FOREACH(CAddress& addr, vAddr)
+ for (CAddress& addr : vAddr)
{
if (interruptMsgProc)
return true;
@@ -1884,13 +1884,13 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
}
}
- BOOST_FOREACH(uint256 hash, vEraseQueue)
+ for (uint256 hash : vEraseQueue)
EraseOrphanTx(hash);
}
else if (fMissingInputs)
{
bool fRejectedParents = false; // It may be the case that the orphans parents have all been rejected
- BOOST_FOREACH(const CTxIn& txin, tx.vin) {
+ for (const CTxIn& txin : tx.vin) {
if (recentRejects->contains(txin.prevout.hash)) {
fRejectedParents = true;
break;
@@ -1898,7 +1898,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
}
if (!fRejectedParents) {
uint32_t nFetchFlags = GetFetchFlags(pfrom);
- BOOST_FOREACH(const CTxIn& txin, tx.vin) {
+ for (const CTxIn& txin : tx.vin) {
CInv _inv(MSG_TX | nFetchFlags, txin.prevout.hash);
pfrom->AddInventoryKnown(_inv);
if (!AlreadyHave(_inv)) pfrom->AskFor(_inv);
@@ -2434,7 +2434,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
pfrom->vAddrToSend.clear();
std::vector<CAddress> vAddr = connman.GetAddresses();
FastRandomContext insecure_rand;
- BOOST_FOREACH(const CAddress &addr, vAddr)
+ for (const CAddress &addr : vAddr)
pfrom->PushAddress(addr, insecure_rand);
}
@@ -2628,7 +2628,7 @@ static bool SendRejectsAndCheckIfBanned(CNode* pnode, CConnman& connman)
AssertLockHeld(cs_main);
CNodeState &state = *State(pnode->GetId());
- BOOST_FOREACH(const CBlockReject& reject, state.rejects) {
+ for (const CBlockReject& reject : state.rejects) {
connman.PushMessage(pnode, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, (std::string)NetMsgType::BLOCK, reject.chRejectCode, reject.strRejectReason, reject.hashBlock));
}
state.rejects.clear();
@@ -2852,7 +2852,7 @@ bool SendMessages(CNode* pto, CConnman& connman, const std::atomic<bool>& interr
pto->nNextAddrSend = PoissonNextSend(nNow, AVG_ADDRESS_BROADCAST_INTERVAL);
std::vector<CAddress> vAddr;
vAddr.reserve(pto->vAddrToSend.size());
- BOOST_FOREACH(const CAddress& addr, pto->vAddrToSend)
+ for (const CAddress& addr : pto->vAddrToSend)
{
if (!pto->addrKnown.contains(addr.GetKey()))
{
@@ -2882,6 +2882,7 @@ bool SendMessages(CNode* pto, CConnman& connman, const std::atomic<bool>& interr
// Only actively request headers from a single peer, unless we're close to today.
if ((nSyncStarted == 0 && fFetch) || pindexBestHeader->GetBlockTime() > GetAdjustedTime() - 24 * 60 * 60) {
state.fSyncStarted = true;
+ state.nHeadersSyncTimeout = GetTimeMicros() + HEADERS_DOWNLOAD_TIMEOUT_BASE + HEADERS_DOWNLOAD_TIMEOUT_PER_HEADER * (GetAdjustedTime() - pindexBestHeader->GetBlockTime())/(consensusParams.nPowTargetSpacing);
nSyncStarted++;
const CBlockIndex *pindexStart = pindexBestHeader;
/* If possible, start at the block preceding the currently
@@ -2930,7 +2931,7 @@ bool SendMessages(CNode* pto, CConnman& connman, const std::atomic<bool>& interr
// Try to find first header that our peer doesn't have, and
// then send all headers past that one. If we come across any
// headers that aren't on chainActive, give up.
- BOOST_FOREACH(const uint256 &hash, pto->vBlockHashesToAnnounce) {
+ for (const uint256 &hash : pto->vBlockHashesToAnnounce) {
BlockMap::iterator mi = mapBlockIndex.find(hash);
assert(mi != mapBlockIndex.end());
const CBlockIndex *pindex = mi->second;
@@ -3056,7 +3057,7 @@ bool SendMessages(CNode* pto, CConnman& connman, const std::atomic<bool>& interr
vInv.reserve(std::max<size_t>(pto->vInventoryBlockToSend.size(), INVENTORY_BROADCAST_MAX));
// Add blocks
- BOOST_FOREACH(const uint256& hash, pto->vInventoryBlockToSend) {
+ for (const uint256& hash : pto->vInventoryBlockToSend) {
vInv.push_back(CInv(MSG_BLOCK, hash));
if (vInv.size() == MAX_INV_SZ) {
connman.PushMessage(pto, msgMaker.Make(NetMsgType::INV, vInv));
@@ -3205,6 +3206,39 @@ bool SendMessages(CNode* pto, CConnman& connman, const std::atomic<bool>& interr
return true;
}
}
+ // Check for headers sync timeouts
+ if (state.fSyncStarted && state.nHeadersSyncTimeout < std::numeric_limits<int64_t>::max()) {
+ // Detect whether this is a stalling initial-headers-sync peer
+ if (pindexBestHeader->GetBlockTime() <= GetAdjustedTime() - 24*60*60) {
+ if (nNow > state.nHeadersSyncTimeout && nSyncStarted == 1 && (nPreferredDownload - state.fPreferredDownload >= 1)) {
+ // Disconnect a (non-whitelisted) peer if it is our only sync peer,
+ // and we have others we could be using instead.
+ // Note: If all our peers are inbound, then we won't
+ // disconnect our sync peer for stalling; we have bigger
+ // problems if we can't get any outbound peers.
+ if (!pto->fWhitelisted) {
+ LogPrintf("Timeout downloading headers from peer=%d, disconnecting\n", pto->GetId());
+ pto->fDisconnect = true;
+ return true;
+ } else {
+ LogPrintf("Timeout downloading headers from whitelisted peer=%d, not disconnecting\n", pto->GetId());
+ // Reset the headers sync state so that we have a
+ // chance to try downloading from a different peer.
+ // Note: this will also result in at least one more
+ // getheaders message to be sent to
+ // this peer (eventually).
+ state.fSyncStarted = false;
+ nSyncStarted--;
+ state.nHeadersSyncTimeout = 0;
+ }
+ }
+ } else {
+ // After we've caught up once, reset the timeout so we can't trigger
+ // disconnect later.
+ state.nHeadersSyncTimeout = std::numeric_limits<int64_t>::max();
+ }
+ }
+
//
// Message: getdata (blocks)
@@ -3214,7 +3248,7 @@ bool SendMessages(CNode* pto, CConnman& connman, const std::atomic<bool>& interr
std::vector<const CBlockIndex*> vToDownload;
NodeId staller = -1;
FindNextBlocksToDownload(pto->GetId(), MAX_BLOCKS_IN_TRANSIT_PER_PEER - state.nBlocksInFlight, vToDownload, staller, consensusParams);
- BOOST_FOREACH(const CBlockIndex *pindex, vToDownload) {
+ for (const CBlockIndex *pindex : vToDownload) {
uint32_t nFetchFlags = GetFetchFlags(pto);
vGetData.push_back(CInv(MSG_BLOCK | nFetchFlags, pindex->GetBlockHash()));
MarkBlockAsInFlight(pto->GetId(), pindex->GetBlockHash(), pindex);
generated by cgit v1.2.3 (git 2.26.2) at 2024-08-24 07:46:16 +0000