diff options
Diffstat (limited to 'src/net.cpp')
| -rw-r--r-- | src/net.cpp | 204 |
1 files changed, 83 insertions, 121 deletions
diff --git a/src/net.cpp b/src/net.cpp index 18d25cbcd..15c4514f1 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -393,18 +393,15 @@ CNode* CConnman::ConnectNode(CAddress addrConnect, const char *pszDest, bool fCo NodeId id = GetNewNodeId(); uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize(); CNode* pnode = new CNode(id, nLocalServices, GetBestHeight(), hSocket, addrConnect, CalculateKeyedNetGroup(addrConnect), nonce, pszDest ? pszDest : "", false); - - GetNodeSignals().InitializeNode(pnode->GetId(), pnode); + pnode->nServicesExpected = ServiceFlags(addrConnect.nServices & nRelevantServices); + pnode->nTimeConnected = GetTime(); pnode->AddRef(); - + GetNodeSignals().InitializeNode(pnode, *this); { LOCK(cs_vNodes); vNodes.push_back(pnode); } - pnode->nServicesExpected = ServiceFlags(addrConnect.nServices & nRelevantServices); - pnode->nTimeConnected = GetTime(); - return pnode; } else if (!proxyConnectionFailed) { // If connecting to the node failed, and failure is not caused by a problem connecting to @@ -450,23 +447,6 @@ void CNode::CloseSocketDisconnect() vRecvMsg.clear(); } -void CNode::PushVersion() -{ - int64_t nTime = (fInbound ? GetAdjustedTime() : GetTime()); - CAddress addrYou = (addr.IsRoutable() && !IsProxy(addr) ? addr : CAddress(CService(), addr.nServices)); - CAddress addrMe = CAddress(CService(), nLocalServices); - if (fLogIPs) - LogPrint("net", "send version message: version %d, blocks=%d, us=%s, them=%s, peer=%d\n", PROTOCOL_VERSION, nMyStartingHeight, addrMe.ToString(), addrYou.ToString(), id); - else - LogPrint("net", "send version message: version %d, blocks=%d, us=%s, peer=%d\n", PROTOCOL_VERSION, nMyStartingHeight, addrMe.ToString(), id); - PushMessage(NetMsgType::VERSION, PROTOCOL_VERSION, (uint64_t)nLocalServices, nTime, addrYou, addrMe, - nLocalHostNonce, strSubVersion, nMyStartingHeight, ::fRelayTxes); -} - - - - - void CConnman::ClearBanned() { { @@ -762,12 +742,21 @@ int CNetMessage::readData(const char *pch, unsigned int nBytes) vRecv.resize(std::min(hdr.nMessageSize, nDataPos + nCopy + 256 * 1024)); } + hasher.Write((const unsigned char*)pch, nCopy); memcpy(&vRecv[nDataPos], pch, nCopy); nDataPos += nCopy; return nCopy; } +const uint256& CNetMessage::GetMessageHash() const +{ + assert(complete()); + if (data_hash.IsNull()) + hasher.Finalize(data_hash.begin()); + return data_hash; +} + @@ -829,7 +818,7 @@ struct NodeEvictionCandidate int64_t nMinPingUsecTime; int64_t nLastBlockTime; int64_t nLastTXTime; - bool fNetworkNode; + bool fRelevantServices; bool fRelayTxes; bool fBloomFilter; CAddress addr; @@ -854,7 +843,7 @@ static bool CompareNodeBlockTime(const NodeEvictionCandidate &a, const NodeEvict { // There is a fall-through here because it is common for a node to have many peers which have not yet relayed a block. if (a.nLastBlockTime != b.nLastBlockTime) return a.nLastBlockTime < b.nLastBlockTime; - if (a.fNetworkNode != b.fNetworkNode) return b.fNetworkNode; + if (a.fRelevantServices != b.fRelevantServices) return b.fRelevantServices; return a.nTimeConnected > b.nTimeConnected; } @@ -889,7 +878,8 @@ bool CConnman::AttemptToEvictConnection() if (node->fDisconnect) continue; NodeEvictionCandidate candidate = {node->id, node->nTimeConnected, node->nMinPingUsecTime, - node->nLastBlockTime, node->nLastTXTime, node->fNetworkNode, + node->nLastBlockTime, node->nLastTXTime, + (node->nServices & nRelevantServices) == nRelevantServices, node->fRelayTxes, node->pfilter != NULL, node->addr, node->nKeyedNetGroup}; vEvictionCandidates.push_back(candidate); } @@ -995,6 +985,12 @@ void CConnman::AcceptConnection(const ListenSocket& hListenSocket) { return; } + if (!fNetworkActive) { + LogPrintf("connection from %s dropped: not accepting new connections\n", addr.ToString()); + CloseSocket(hSocket); + return; + } + if (!IsSelectableSocket(hSocket)) { LogPrintf("connection from %s dropped: non-selectable socket\n", addr.ToString()); @@ -1032,9 +1028,9 @@ void CConnman::AcceptConnection(const ListenSocket& hListenSocket) { uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize(); CNode* pnode = new CNode(id, nLocalServices, GetBestHeight(), hSocket, addr, CalculateKeyedNetGroup(addr), nonce, "", true); - GetNodeSignals().InitializeNode(pnode->GetId(), pnode); pnode->AddRef(); pnode->fWhitelisted = whitelisted; + GetNodeSignals().InitializeNode(pnode, *this); LogPrint("net", "connection from %s accepted\n", addr.ToString()); @@ -1059,7 +1055,7 @@ void CConnman::ThreadSocketHandler() BOOST_FOREACH(CNode* pnode, vNodesCopy) { if (pnode->fDisconnect || - (pnode->GetRefCount() <= 0 && pnode->vRecvMsg.empty() && pnode->nSendSize == 0 && pnode->ssSend.empty())) + (pnode->GetRefCount() <= 0 && pnode->vRecvMsg.empty() && pnode->nSendSize == 0)) { // remove from vNodes vNodes.erase(remove(vNodes.begin(), vNodes.end(), pnode), vNodes.end()); @@ -1163,10 +1159,6 @@ void CConnman::ThreadSocketHandler() { TRY_LOCK(pnode->cs_vSend, lockSend); if (lockSend) { - if (pnode->nOptimisticBytesWritten) { - RecordBytesSent(pnode->nOptimisticBytesWritten); - pnode->nOptimisticBytesWritten = 0; - } if (!pnode->vSendMsg.empty()) { FD_SET(pnode->hSocket, &fdsetSend); continue; @@ -1798,6 +1790,9 @@ bool CConnman::OpenNetworkConnection(const CAddress& addrConnect, bool fCountFai // Initiate outbound network connection // boost::this_thread::interruption_point(); + if (!fNetworkActive) { + return false; + } if (!pszDest) { if (IsLocal(addrConnect) || FindNode((CNetAddr)addrConnect) || IsBanned(addrConnect) || @@ -2039,8 +2034,30 @@ void Discover(boost::thread_group& threadGroup) #endif } +void CConnman::SetNetworkActive(bool active) +{ + if (fDebug) { + LogPrint("net", "SetNetworkActive: %s\n", active); + } + + if (!active) { + fNetworkActive = false; + + LOCK(cs_vNodes); + // Close sockets to all nodes + BOOST_FOREACH(CNode* pnode, vNodes) { + pnode->CloseSocketDisconnect(); + } + } else { + fNetworkActive = true; + } + + uiInterface.NotifyNetworkActiveChanged(fNetworkActive); +} + CConnman::CConnman(uint64_t nSeed0In, uint64_t nSeed1In) : nSeed0(nSeed0In), nSeed1(nSeed1In) { + fNetworkActive = true; setBannedIsDirty = false; fAddressesInitialized = false; nLastNodeId = 0; @@ -2130,7 +2147,7 @@ bool CConnman::Start(boost::thread_group& threadGroup, CScheduler& scheduler, st uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize(); pnodeLocalHost = new CNode(id, nLocalServices, GetBestHeight(), INVALID_SOCKET, CAddress(CService(local, 0), nLocalServices), 0, nonce); - GetNodeSignals().InitializeNode(pnodeLocalHost->GetId(), pnodeLocalHost); + GetNodeSignals().InitializeNode(pnodeLocalHost, *this); } // @@ -2482,46 +2499,10 @@ int CConnman::GetBestHeight() const return nBestHeight.load(std::memory_order_acquire); } -void CNode::Fuzz(int nChance) -{ - if (!fSuccessfullyConnected) return; // Don't fuzz initial handshake - if (GetRand(nChance) != 0) return; // Fuzz 1 of every nChance messages - - switch (GetRand(3)) - { - case 0: - // xor a random byte with a random value: - if (!ssSend.empty()) { - CDataStream::size_type pos = GetRand(ssSend.size()); - ssSend[pos] ^= (unsigned char)(GetRand(256)); - } - break; - case 1: - // delete a random byte: - if (!ssSend.empty()) { - CDataStream::size_type pos = GetRand(ssSend.size()); - ssSend.erase(ssSend.begin()+pos); - } - break; - case 2: - // insert a random byte at a random position - { - CDataStream::size_type pos = GetRand(ssSend.size()); - char ch = (char)GetRand(256); - ssSend.insert(ssSend.begin()+pos, ch); - } - break; - } - // Chance of more than one change half the time: - // (more changes exponentially less likely): - Fuzz(2); -} - unsigned int CConnman::GetReceiveFloodSize() const { return nReceiveFloodSize; } unsigned int CConnman::GetSendBufferSize() const{ return nSendBufferMaxSize; } CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn, SOCKET hSocketIn, const CAddress& addrIn, uint64_t nKeyedNetGroupIn, uint64_t nLocalHostNonceIn, const std::string& addrNameIn, bool fInboundIn) : - ssSend(SER_NETWORK, INIT_PROTO_VERSION), addr(addrIn), fInbound(fInboundIn), id(idIn), @@ -2530,7 +2511,8 @@ CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn filterInventoryKnown(50000, 0.000001), nLocalHostNonce(nLocalHostNonceIn), nLocalServices(nLocalServicesIn), - nMyStartingHeight(nMyStartingHeightIn) + nMyStartingHeight(nMyStartingHeightIn), + nSendVersion(0) { nServices = NODE_NONE; nServicesExpected = NODE_NONE; @@ -2577,7 +2559,6 @@ CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn minFeeFilter = 0; lastSentFeeFilter = 0; nextSendTimeFeeFilter = 0; - nOptimisticBytesWritten = 0; BOOST_FOREACH(const std::string &msg, getAllNetMessageTypes()) mapRecvBytesPerMsgCmd[msg] = 0; @@ -2587,10 +2568,6 @@ CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn LogPrint("net", "Added connection to %s peer=%d\n", addrName, id); else LogPrint("net", "Added connection peer=%d\n", id); - - // Be shy and don't send version until we hear - if (hSocket != INVALID_SOCKET && !fInbound) - PushVersion(); } CNode::~CNode() @@ -2635,65 +2612,50 @@ void CNode::AskFor(const CInv& inv) mapAskFor.insert(std::make_pair(nRequestTime, inv)); } -void CNode::BeginMessage(const char* pszCommand) EXCLUSIVE_LOCK_FUNCTION(cs_vSend) +CDataStream CConnman::BeginMessage(CNode* pnode, int nVersion, int flags, const std::string& sCommand) { - ENTER_CRITICAL_SECTION(cs_vSend); - assert(ssSend.size() == 0); - ssSend << CMessageHeader(Params().MessageStart(), pszCommand, 0); - LogPrint("net", "sending: %s ", SanitizeString(pszCommand)); + return {SER_NETWORK, (nVersion ? nVersion : pnode->GetSendVersion()) | flags, CMessageHeader(Params().MessageStart(), sCommand.c_str(), 0) }; } -void CNode::AbortMessage() UNLOCK_FUNCTION(cs_vSend) +void CConnman::EndMessage(CDataStream& strm) { - ssSend.clear(); - - LEAVE_CRITICAL_SECTION(cs_vSend); + // Set the size + assert(strm.size () >= CMessageHeader::HEADER_SIZE); + unsigned int nSize = strm.size() - CMessageHeader::HEADER_SIZE; + WriteLE32((uint8_t*)&strm[CMessageHeader::MESSAGE_SIZE_OFFSET], nSize); + // Set the checksum + uint256 hash = Hash(strm.begin() + CMessageHeader::HEADER_SIZE, strm.end()); + memcpy((char*)&strm[CMessageHeader::CHECKSUM_OFFSET], hash.begin(), CMessageHeader::CHECKSUM_SIZE); - LogPrint("net", "(aborted)\n"); } -void CNode::EndMessage(const char* pszCommand) UNLOCK_FUNCTION(cs_vSend) +void CConnman::PushMessage(CNode* pnode, CDataStream& strm, const std::string& sCommand) { - // The -*messagestest options are intentionally not documented in the help message, - // since they are only used during development to debug the networking code and are - // not intended for end-users. - if (mapArgs.count("-dropmessagestest") && GetRand(GetArg("-dropmessagestest", 2)) == 0) - { - LogPrint("net", "dropmessages DROPPING SEND MESSAGE\n"); - AbortMessage(); - return; - } - if (mapArgs.count("-fuzzmessagestest")) - Fuzz(GetArg("-fuzzmessagestest", 10)); - - if (ssSend.size() == 0) - { - LEAVE_CRITICAL_SECTION(cs_vSend); + if(strm.empty()) return; - } - // Set the size - unsigned int nSize = ssSend.size() - CMessageHeader::HEADER_SIZE; - WriteLE32((uint8_t*)&ssSend[CMessageHeader::MESSAGE_SIZE_OFFSET], nSize); - - //log total amount of bytes per command - mapSendBytesPerMsgCmd[std::string(pszCommand)] += nSize + CMessageHeader::HEADER_SIZE; - - // Set the checksum - uint256 hash = Hash(ssSend.begin() + CMessageHeader::HEADER_SIZE, ssSend.end()); - assert(ssSend.size () >= CMessageHeader::CHECKSUM_OFFSET + CMessageHeader::CHECKSUM_SIZE); - memcpy((char*)&ssSend[CMessageHeader::CHECKSUM_OFFSET], hash.begin(), CMessageHeader::CHECKSUM_SIZE); - LogPrint("net", "(%d bytes) peer=%d\n", nSize, id); + unsigned int nSize = strm.size() - CMessageHeader::HEADER_SIZE; + LogPrint("net", "sending %s (%d bytes) peer=%d\n", SanitizeString(sCommand.c_str()), nSize, pnode->id); - std::deque<CSerializeData>::iterator it = vSendMsg.insert(vSendMsg.end(), CSerializeData()); - ssSend.GetAndClear(*it); - nSendSize += (*it).size(); + size_t nBytesSent = 0; + { + LOCK(pnode->cs_vSend); + if(pnode->hSocket == INVALID_SOCKET) { + return; + } + bool optimisticSend(pnode->vSendMsg.empty()); + pnode->vSendMsg.emplace_back(strm.begin(), strm.end()); - // If write queue empty, attempt "optimistic write" - if (it == vSendMsg.begin()) - nOptimisticBytesWritten += SocketSendData(this); + //log total amount of bytes per command + pnode->mapSendBytesPerMsgCmd[sCommand] += strm.size(); + pnode->nSendSize += strm.size(); - LEAVE_CRITICAL_SECTION(cs_vSend); + // If write queue empty, attempt "optimistic write" + if (optimisticSend == true) + nBytesSent = SocketSendData(pnode); + } + if (nBytesSent) + RecordBytesSent(nBytesSent); } bool CConnman::ForNode(NodeId id, std::function<bool(CNode* pnode)> func) |