diff options
author | John Newbery <john@johnnewbery.com> | 2020-07-20 13:06:03 -0400 |
---|---|---|
committer | dergoegge <n.goeggi@gmail.com> | 2022-07-14 14:49:31 +0200 |
commit | 7d1c0369340cb752f0d78e24f4251595534bf5e9 (patch) | |
tree | 1ec1494020636628b39e3712dd6abcb8254cf8c5 /src | |
parent | f65e83d51bfb6a34f1d5efccfb3d8786a51a4534 (diff) | |
download | bitcoin-7d1c0369340cb752f0d78e24f4251595534bf5e9.tar.xz |
[net processing] Replace fHaveWitness with CanServeWitnesses()
Diffstat (limited to 'src')
-rw-r--r-- | src/net_processing.cpp | 69 |
1 files changed, 35 insertions, 34 deletions
diff --git a/src/net_processing.cpp b/src/net_processing.cpp index 293ed36fb7..8889266a02 100644 --- a/src/net_processing.cpp +++ b/src/net_processing.cpp @@ -432,8 +432,6 @@ struct CNodeState { bool m_requested_hb_cmpctblocks{false}; /** Whether this peer will send us cmpctblocks if we request them. */ bool m_provides_cmpctblocks{false}; - //! Whether this peer can give us witnesses - bool fHaveWitness{false}; /** State used to enforce CHAIN_SYNC_TIMEOUT and EXTRA_PEER_CHECK_INTERVAL logic. * @@ -514,7 +512,8 @@ public: /** Implement PeerManager */ void StartScheduledTasks(CScheduler& scheduler) override; void CheckForStaleTipAndEvictPeers() override; - std::optional<std::string> FetchBlock(NodeId peer_id, const CBlockIndex& block_index) override; + std::optional<std::string> FetchBlock(NodeId peer_id, const CBlockIndex& block_index) override + EXCLUSIVE_LOCKS_REQUIRED(!m_peer_mutex); bool GetNodeStateStats(NodeId nodeid, CNodeStateStats& stats) const override EXCLUSIVE_LOCKS_REQUIRED(!m_peer_mutex); bool IgnoresIncomingTxs() override { return m_ignore_incoming_txs; } void SendPings() override EXCLUSIVE_LOCKS_REQUIRED(!m_peer_mutex); @@ -600,7 +599,7 @@ private: */ bool MaybeSendGetHeaders(CNode& pfrom, const CBlockLocator& locator, Peer& peer); /** Potentially fetch blocks from this peer upon receipt of a new headers tip */ - void HeadersDirectFetchBlocks(CNode& pfrom, const CBlockIndex* pindexLast); + void HeadersDirectFetchBlocks(CNode& pfrom, const Peer& peer, const CBlockIndex* pindexLast); /** Update peer state based on received headers message */ void UpdatePeerStateForReceivedHeaders(CNode& pfrom, const CBlockIndex *pindexLast, bool received_new_header, bool may_have_more_headers); @@ -679,7 +678,7 @@ private: /** Get a pointer to a mutable CNodeState. */ CNodeState* State(NodeId pnode) EXCLUSIVE_LOCKS_REQUIRED(cs_main); - uint32_t GetFetchFlags(const CNode& pfrom) const EXCLUSIVE_LOCKS_REQUIRED(cs_main); + uint32_t GetFetchFlags(const Peer& peer) const; std::atomic<std::chrono::microseconds> m_next_inv_to_inbounds{0us}; @@ -800,7 +799,7 @@ private: /** Update pindexLastCommonBlock and add not-in-flight missing successors to vBlocks, until it has * at most count entries. */ - void FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<const CBlockIndex*>& vBlocks, NodeId& nodeStaller) EXCLUSIVE_LOCKS_REQUIRED(cs_main); + void FindNextBlocksToDownload(const Peer& peer, unsigned int count, std::vector<const CBlockIndex*>& vBlocks, NodeId& nodeStaller) EXCLUSIVE_LOCKS_REQUIRED(cs_main); std::map<uint256, std::pair<NodeId, std::list<QueuedBlock>::iterator> > mapBlocksInFlight GUARDED_BY(cs_main); @@ -991,6 +990,12 @@ static bool IsLimitedPeer(const Peer& peer) (peer.m_their_services & NODE_NETWORK_LIMITED)); } +/** Whether this peer can serve us witness data */ +static bool CanServeWitnesses(const Peer& peer) +{ + return peer.m_their_services & NODE_WITNESS; +} + std::chrono::microseconds PeerManagerImpl::NextInvToInbounds(std::chrono::microseconds now, std::chrono::seconds average_interval) { @@ -1184,17 +1189,17 @@ void PeerManagerImpl::UpdateBlockAvailability(NodeId nodeid, const uint256 &hash } } -void PeerManagerImpl::FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<const CBlockIndex*>& vBlocks, NodeId& nodeStaller) +void PeerManagerImpl::FindNextBlocksToDownload(const Peer& peer, unsigned int count, std::vector<const CBlockIndex*>& vBlocks, NodeId& nodeStaller) { if (count == 0) return; vBlocks.reserve(vBlocks.size() + count); - CNodeState *state = State(nodeid); + CNodeState *state = State(peer.m_id); assert(state != nullptr); // Make sure pindexBestKnownBlock is up to date, we'll need it. - ProcessBlockAvailability(nodeid); + ProcessBlockAvailability(peer.m_id); if (state->pindexBestKnownBlock == nullptr || state->pindexBestKnownBlock->nChainWork < m_chainman.ActiveChain().Tip()->nChainWork || state->pindexBestKnownBlock->nChainWork < nMinimumChainWork) { // This peer has nothing interesting. @@ -1242,7 +1247,7 @@ void PeerManagerImpl::FindNextBlocksToDownload(NodeId nodeid, unsigned int count // We consider the chain that this peer is on invalid. return; } - if (!State(nodeid)->fHaveWitness && DeploymentActiveAt(*pindex, m_chainman, Consensus::DEPLOYMENT_SEGWIT)) { + if (!CanServeWitnesses(peer) && DeploymentActiveAt(*pindex, m_chainman, Consensus::DEPLOYMENT_SEGWIT)) { // We wouldn't download this block or its descendants from this peer. return; } @@ -1253,7 +1258,7 @@ void PeerManagerImpl::FindNextBlocksToDownload(NodeId nodeid, unsigned int count // The block is not already downloaded, and not yet in flight. if (pindex->nHeight > nWindowEnd) { // We reached the end of the window. - if (vBlocks.size() == 0 && waitingfor != nodeid) { + if (vBlocks.size() == 0 && waitingfor != peer.m_id) { // We aren't able to fetch anything, but we would be if the download window was one larger. nodeStaller = waitingfor; } @@ -1621,12 +1626,14 @@ std::optional<std::string> PeerManagerImpl::FetchBlock(NodeId peer_id, const CBl if (fImporting) return "Importing..."; if (fReindex) return "Reindexing..."; - LOCK(cs_main); // Ensure this peer exists and hasn't been disconnected - CNodeState* state = State(peer_id); - if (state == nullptr) return "Peer does not exist"; + PeerRef peer = GetPeerRef(peer_id); + if (peer == nullptr) return "Peer does not exist"; + // Ignore pre-segwit peers - if (!state->fHaveWitness) return "Pre-SegWit peer"; + if (!CanServeWitnesses(*peer)) return "Pre-SegWit peer"; + + LOCK(cs_main); // Mark block as in-flight unless it already is (for this peer). // If a block was already in-flight for a different peer, its BLOCKTXN @@ -2227,10 +2234,10 @@ void PeerManagerImpl::ProcessGetData(CNode& pfrom, Peer& peer, const std::atomic } } -uint32_t PeerManagerImpl::GetFetchFlags(const CNode& pfrom) const EXCLUSIVE_LOCKS_REQUIRED(cs_main) +uint32_t PeerManagerImpl::GetFetchFlags(const Peer& peer) const { uint32_t nFetchFlags = 0; - if (State(pfrom.GetId())->fHaveWitness) { + if (CanServeWitnesses(peer)) { nFetchFlags |= MSG_WITNESS_FLAG; } return nFetchFlags; @@ -2325,7 +2332,7 @@ bool PeerManagerImpl::MaybeSendGetHeaders(CNode& pfrom, const CBlockLocator& loc * We require that the given tip have at least as much work as our tip, and for * our current tip to be "close to synced" (see CanDirectFetch()). */ -void PeerManagerImpl::HeadersDirectFetchBlocks(CNode& pfrom, const CBlockIndex* pindexLast) +void PeerManagerImpl::HeadersDirectFetchBlocks(CNode& pfrom, const Peer& peer, const CBlockIndex* pindexLast) { const CNetMsgMaker msgMaker(pfrom.GetCommonVersion()); @@ -2340,7 +2347,7 @@ void PeerManagerImpl::HeadersDirectFetchBlocks(CNode& pfrom, const CBlockIndex* while (pindexWalk && !m_chainman.ActiveChain().Contains(pindexWalk) && vToFetch.size() <= MAX_BLOCKS_IN_TRANSIT_PER_PEER) { if (!(pindexWalk->nStatus & BLOCK_HAVE_DATA) && !IsBlockRequested(pindexWalk->GetBlockHash()) && - (!DeploymentActiveAt(*pindexWalk, m_chainman, Consensus::DEPLOYMENT_SEGWIT) || State(pfrom.GetId())->fHaveWitness)) { + (!DeploymentActiveAt(*pindexWalk, m_chainman, Consensus::DEPLOYMENT_SEGWIT) || CanServeWitnesses(peer))) { // We don't have this block, and it's not yet in flight. vToFetch.push_back(pindexWalk); } @@ -2362,7 +2369,7 @@ void PeerManagerImpl::HeadersDirectFetchBlocks(CNode& pfrom, const CBlockIndex* // Can't download any more from this peer break; } - uint32_t nFetchFlags = GetFetchFlags(pfrom); + uint32_t nFetchFlags = GetFetchFlags(peer); vGetData.push_back(CInv(MSG_BLOCK | nFetchFlags, pindex->GetBlockHash())); BlockRequested(pfrom.GetId(), *pindex); LogPrint(BCLog::NET, "Requesting block %s from peer=%d\n", @@ -2507,7 +2514,7 @@ void PeerManagerImpl::ProcessHeadersMessage(CNode& pfrom, Peer& peer, UpdatePeerStateForReceivedHeaders(pfrom, pindexLast, received_new_header, nCount == MAX_HEADERS_RESULTS); // Consider immediately downloading blocks. - HeadersDirectFetchBlocks(pfrom, pindexLast); + HeadersDirectFetchBlocks(pfrom, peer, pindexLast); return; } @@ -2901,12 +2908,6 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type, if (fRelay) pfrom.m_relays_txs = true; } - if((nServices & NODE_WITNESS)) - { - LOCK(cs_main); - State(pfrom.GetId())->fHaveWitness = true; - } - // Potentially mark this peer as a preferred download peer. { LOCK(cs_main); @@ -3789,7 +3790,7 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type, // We requested this block for some reason, but our mempool will probably be useless // so we just grab the block via normal getdata std::vector<CInv> vInv(1); - vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(pfrom), cmpctblock.header.GetHash()); + vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(*peer), cmpctblock.header.GetHash()); m_connman.PushMessage(&pfrom, msgMaker.Make(NetMsgType::GETDATA, vInv)); } return; @@ -3825,7 +3826,7 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type, } else if (status == READ_STATUS_FAILED) { // Duplicate txindexes, the block is now in-flight, so just request it std::vector<CInv> vInv(1); - vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(pfrom), cmpctblock.header.GetHash()); + vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(*peer), cmpctblock.header.GetHash()); m_connman.PushMessage(&pfrom, msgMaker.Make(NetMsgType::GETDATA, vInv)); return; } @@ -3868,7 +3869,7 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type, // We requested this block, but its far into the future, so our // mempool will probably be useless - request the block normally std::vector<CInv> vInv(1); - vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(pfrom), cmpctblock.header.GetHash()); + vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(*peer), cmpctblock.header.GetHash()); m_connman.PushMessage(&pfrom, msgMaker.Make(NetMsgType::GETDATA, vInv)); return; } else { @@ -3952,7 +3953,7 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type, } else if (status == READ_STATUS_FAILED) { // Might have collided, fall back to getdata now :( std::vector<CInv> invs; - invs.push_back(CInv(MSG_BLOCK | GetFetchFlags(pfrom), resp.blockhash)); + invs.push_back(CInv(MSG_BLOCK | GetFetchFlags(*peer), resp.blockhash)); m_connman.PushMessage(&pfrom, msgMaker.Make(NetMsgType::GETDATA, invs)); } else { // Block is either okay, or possibly we received @@ -5266,9 +5267,9 @@ bool PeerManagerImpl::SendMessages(CNode* pto) if (CanServeBlocks(*peer) && ((sync_blocks_and_headers_from_peer && !IsLimitedPeer(*peer)) || !m_chainman.ActiveChainstate().IsInitialBlockDownload()) && state.nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) { std::vector<const CBlockIndex*> vToDownload; NodeId staller = -1; - FindNextBlocksToDownload(pto->GetId(), MAX_BLOCKS_IN_TRANSIT_PER_PEER - state.nBlocksInFlight, vToDownload, staller); + FindNextBlocksToDownload(*peer, MAX_BLOCKS_IN_TRANSIT_PER_PEER - state.nBlocksInFlight, vToDownload, staller); for (const CBlockIndex *pindex : vToDownload) { - uint32_t nFetchFlags = GetFetchFlags(*pto); + uint32_t nFetchFlags = GetFetchFlags(*peer); vGetData.push_back(CInv(MSG_BLOCK | nFetchFlags, pindex->GetBlockHash())); BlockRequested(pto->GetId(), *pindex); LogPrint(BCLog::NET, "Requesting block %s (%d) peer=%d\n", pindex->GetBlockHash().ToString(), @@ -5295,7 +5296,7 @@ bool PeerManagerImpl::SendMessages(CNode* pto) if (!AlreadyHaveTx(gtxid)) { LogPrint(BCLog::NET, "Requesting %s %s peer=%d\n", gtxid.IsWtxid() ? "wtx" : "tx", gtxid.GetHash().ToString(), pto->GetId()); - vGetData.emplace_back(gtxid.IsWtxid() ? MSG_WTX : (MSG_TX | GetFetchFlags(*pto)), gtxid.GetHash()); + vGetData.emplace_back(gtxid.IsWtxid() ? MSG_WTX : (MSG_TX | GetFetchFlags(*peer)), gtxid.GetHash()); if (vGetData.size() >= MAX_GETDATA_SZ) { m_connman.PushMessage(pto, msgMaker.Make(NetMsgType::GETDATA, vGetData)); vGetData.clear(); |