857 lines
26 KiB
C++
857 lines
26 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2015 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_NET_H
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#define BITCOIN_NET_H
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#include "addrdb.h"
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#include "addrman.h"
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#include "amount.h"
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#include "bloom.h"
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#include "compat.h"
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#include "hash.h"
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#include "limitedmap.h"
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#include "netaddress.h"
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#include "protocol.h"
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#include "random.h"
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#include "streams.h"
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#include "sync.h"
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#include "uint256.h"
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#include <atomic>
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#include <deque>
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#include <stdint.h>
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#include <memory>
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#ifndef WIN32
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#include <arpa/inet.h>
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#endif
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#include <boost/filesystem/path.hpp>
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#include <boost/foreach.hpp>
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#include <boost/signals2/signal.hpp>
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class CAddrMan;
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class CScheduler;
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class CNode;
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namespace boost {
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class thread_group;
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} // namespace boost
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/** Time between pings automatically sent out for latency probing and keepalive (in seconds). */
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static const int PING_INTERVAL = 2 * 60;
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/** Time after which to disconnect, after waiting for a ping response (or inactivity). */
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static const int TIMEOUT_INTERVAL = 20 * 60;
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/** Run the feeler connection loop once every 2 minutes or 120 seconds. **/
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static const int FEELER_INTERVAL = 120;
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/** The maximum number of entries in an 'inv' protocol message */
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static const unsigned int MAX_INV_SZ = 50000;
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/** The maximum number of new addresses to accumulate before announcing. */
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static const unsigned int MAX_ADDR_TO_SEND = 1000;
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/** Maximum length of incoming protocol messages (no message over 4 MB is currently acceptable). */
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static const unsigned int MAX_PROTOCOL_MESSAGE_LENGTH = 4 * 1000 * 1000;
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/** Maximum length of strSubVer in `version` message */
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static const unsigned int MAX_SUBVERSION_LENGTH = 256;
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/** Maximum number of outgoing nodes */
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static const int MAX_OUTBOUND_CONNECTIONS = 8;
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/** -listen default */
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static const bool DEFAULT_LISTEN = true;
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/** -upnp default */
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#ifdef USE_UPNP
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static const bool DEFAULT_UPNP = USE_UPNP;
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#else
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static const bool DEFAULT_UPNP = false;
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#endif
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/** The maximum number of entries in mapAskFor */
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static const size_t MAPASKFOR_MAX_SZ = MAX_INV_SZ;
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/** The maximum number of entries in setAskFor (larger due to getdata latency)*/
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static const size_t SETASKFOR_MAX_SZ = 2 * MAX_INV_SZ;
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/** The maximum number of peer connections to maintain. */
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static const unsigned int DEFAULT_MAX_PEER_CONNECTIONS = 125;
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/** The default for -maxuploadtarget. 0 = Unlimited */
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static const uint64_t DEFAULT_MAX_UPLOAD_TARGET = 0;
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/** The default timeframe for -maxuploadtarget. 1 day. */
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static const uint64_t MAX_UPLOAD_TIMEFRAME = 60 * 60 * 24;
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/** Default for blocks only*/
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static const bool DEFAULT_BLOCKSONLY = false;
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static const bool DEFAULT_FORCEDNSSEED = false;
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static const size_t DEFAULT_MAXRECEIVEBUFFER = 5 * 1000;
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static const size_t DEFAULT_MAXSENDBUFFER = 1 * 1000;
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static const ServiceFlags REQUIRED_SERVICES = NODE_NETWORK;
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// NOTE: When adjusting this, update rpcnet:setban's help ("24h")
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static const unsigned int DEFAULT_MISBEHAVING_BANTIME = 60 * 60 * 24; // Default 24-hour ban
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typedef int NodeId;
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struct AddedNodeInfo
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{
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std::string strAddedNode;
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CService resolvedAddress;
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bool fConnected;
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bool fInbound;
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};
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class CTransaction;
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class CNodeStats;
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class CClientUIInterface;
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class CConnman
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{
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public:
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enum NumConnections {
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CONNECTIONS_NONE = 0,
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CONNECTIONS_IN = (1U << 0),
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CONNECTIONS_OUT = (1U << 1),
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CONNECTIONS_ALL = (CONNECTIONS_IN | CONNECTIONS_OUT),
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};
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struct Options
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{
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ServiceFlags nLocalServices = NODE_NONE;
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ServiceFlags nRelevantServices = NODE_NONE;
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int nMaxConnections = 0;
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int nMaxOutbound = 0;
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int nMaxFeeler = 0;
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int nBestHeight = 0;
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CClientUIInterface* uiInterface = nullptr;
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unsigned int nSendBufferMaxSize = 0;
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unsigned int nReceiveFloodSize = 0;
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uint64_t nMaxOutboundTimeframe = 0;
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uint64_t nMaxOutboundLimit = 0;
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};
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CConnman(uint64_t seed0, uint64_t seed1);
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~CConnman();
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bool Start(boost::thread_group& threadGroup, CScheduler& scheduler, std::string& strNodeError, Options options);
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void Stop();
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bool BindListenPort(const CService &bindAddr, std::string& strError, bool fWhitelisted = false);
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bool GetNetworkActive() const { return fNetworkActive; };
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void SetNetworkActive(bool active);
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bool OpenNetworkConnection(const CAddress& addrConnect, bool fCountFailure, CSemaphoreGrant *grantOutbound = NULL, const char *strDest = NULL, bool fOneShot = false, bool fFeeler = false);
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bool CheckIncomingNonce(uint64_t nonce);
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bool ForNode(NodeId id, std::function<bool(CNode* pnode)> func);
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template <typename... Args>
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void PushMessageWithVersionAndFlag(CNode* pnode, int nVersion, int flag, const std::string& sCommand, Args&&... args)
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{
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auto msg(BeginMessage(pnode, nVersion, flag, sCommand));
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::SerializeMany(msg, std::forward<Args>(args)...);
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EndMessage(msg);
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PushMessage(pnode, msg, sCommand);
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}
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template <typename... Args>
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void PushMessageWithFlag(CNode* pnode, int flag, const std::string& sCommand, Args&&... args)
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{
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PushMessageWithVersionAndFlag(pnode, 0, flag, sCommand, std::forward<Args>(args)...);
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}
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template <typename... Args>
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void PushMessageWithVersion(CNode* pnode, int nVersion, const std::string& sCommand, Args&&... args)
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{
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PushMessageWithVersionAndFlag(pnode, nVersion, 0, sCommand, std::forward<Args>(args)...);
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}
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template <typename... Args>
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void PushMessage(CNode* pnode, const std::string& sCommand, Args&&... args)
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{
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PushMessageWithVersionAndFlag(pnode, 0, 0, sCommand, std::forward<Args>(args)...);
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}
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template<typename Callable>
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bool ForEachNodeContinueIf(Callable&& func)
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{
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LOCK(cs_vNodes);
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for (auto&& node : vNodes)
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if(!func(node))
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return false;
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return true;
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};
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template<typename Callable>
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bool ForEachNodeContinueIf(Callable&& func) const
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{
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LOCK(cs_vNodes);
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for (const auto& node : vNodes)
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if(!func(node))
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return false;
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return true;
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};
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template<typename Callable, typename CallableAfter>
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bool ForEachNodeContinueIfThen(Callable&& pre, CallableAfter&& post)
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{
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bool ret = true;
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LOCK(cs_vNodes);
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for (auto&& node : vNodes)
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if(!pre(node)) {
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ret = false;
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break;
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}
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post();
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return ret;
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};
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template<typename Callable, typename CallableAfter>
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bool ForEachNodeContinueIfThen(Callable&& pre, CallableAfter&& post) const
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{
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bool ret = true;
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LOCK(cs_vNodes);
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for (const auto& node : vNodes)
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if(!pre(node)) {
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ret = false;
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break;
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}
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post();
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return ret;
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};
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template<typename Callable>
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void ForEachNode(Callable&& func)
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{
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LOCK(cs_vNodes);
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for (auto&& node : vNodes)
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func(node);
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};
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template<typename Callable>
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void ForEachNode(Callable&& func) const
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{
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LOCK(cs_vNodes);
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for (const auto& node : vNodes)
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func(node);
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};
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template<typename Callable, typename CallableAfter>
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void ForEachNodeThen(Callable&& pre, CallableAfter&& post)
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{
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LOCK(cs_vNodes);
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for (auto&& node : vNodes)
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pre(node);
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post();
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};
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template<typename Callable, typename CallableAfter>
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void ForEachNodeThen(Callable&& pre, CallableAfter&& post) const
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{
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LOCK(cs_vNodes);
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for (const auto& node : vNodes)
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pre(node);
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post();
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};
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void RelayTransaction(const CTransaction& tx);
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// Addrman functions
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size_t GetAddressCount() const;
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void SetServices(const CService &addr, ServiceFlags nServices);
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void MarkAddressGood(const CAddress& addr);
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void AddNewAddress(const CAddress& addr, const CAddress& addrFrom, int64_t nTimePenalty = 0);
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void AddNewAddresses(const std::vector<CAddress>& vAddr, const CAddress& addrFrom, int64_t nTimePenalty = 0);
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std::vector<CAddress> GetAddresses();
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void AddressCurrentlyConnected(const CService& addr);
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// Denial-of-service detection/prevention
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// The idea is to detect peers that are behaving
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// badly and disconnect/ban them, but do it in a
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// one-coding-mistake-won't-shatter-the-entire-network
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// way.
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// IMPORTANT: There should be nothing I can give a
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// node that it will forward on that will make that
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// node's peers drop it. If there is, an attacker
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// can isolate a node and/or try to split the network.
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// Dropping a node for sending stuff that is invalid
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// now but might be valid in a later version is also
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// dangerous, because it can cause a network split
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// between nodes running old code and nodes running
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// new code.
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void Ban(const CNetAddr& netAddr, const BanReason& reason, int64_t bantimeoffset = 0, bool sinceUnixEpoch = false);
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void Ban(const CSubNet& subNet, const BanReason& reason, int64_t bantimeoffset = 0, bool sinceUnixEpoch = false);
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void ClearBanned(); // needed for unit testing
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bool IsBanned(CNetAddr ip);
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bool IsBanned(CSubNet subnet);
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bool Unban(const CNetAddr &ip);
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bool Unban(const CSubNet &ip);
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void GetBanned(banmap_t &banmap);
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void SetBanned(const banmap_t &banmap);
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void AddOneShot(const std::string& strDest);
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bool AddNode(const std::string& node);
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bool RemoveAddedNode(const std::string& node);
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std::vector<AddedNodeInfo> GetAddedNodeInfo();
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size_t GetNodeCount(NumConnections num);
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void GetNodeStats(std::vector<CNodeStats>& vstats);
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bool DisconnectAddress(const CNetAddr& addr);
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bool DisconnectNode(const std::string& node);
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bool DisconnectNode(NodeId id);
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bool DisconnectSubnet(const CSubNet& subnet);
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unsigned int GetSendBufferSize() const;
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void AddWhitelistedRange(const CSubNet &subnet);
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ServiceFlags GetLocalServices() const;
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//!set the max outbound target in bytes
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void SetMaxOutboundTarget(uint64_t limit);
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uint64_t GetMaxOutboundTarget();
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//!set the timeframe for the max outbound target
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void SetMaxOutboundTimeframe(uint64_t timeframe);
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uint64_t GetMaxOutboundTimeframe();
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//!check if the outbound target is reached
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// if param historicalBlockServingLimit is set true, the function will
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// response true if the limit for serving historical blocks has been reached
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bool OutboundTargetReached(bool historicalBlockServingLimit);
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//!response the bytes left in the current max outbound cycle
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// in case of no limit, it will always response 0
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uint64_t GetOutboundTargetBytesLeft();
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//!response the time in second left in the current max outbound cycle
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// in case of no limit, it will always response 0
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uint64_t GetMaxOutboundTimeLeftInCycle();
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uint64_t GetTotalBytesRecv();
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uint64_t GetTotalBytesSent();
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void SetBestHeight(int height);
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int GetBestHeight() const;
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/** Get a unique deterministic randomizer. */
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CSipHasher GetDeterministicRandomizer(uint64_t id);
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private:
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struct ListenSocket {
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SOCKET socket;
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bool whitelisted;
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ListenSocket(SOCKET socket_, bool whitelisted_) : socket(socket_), whitelisted(whitelisted_) {}
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};
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void ThreadOpenAddedConnections();
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void ProcessOneShot();
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void ThreadOpenConnections();
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void ThreadMessageHandler();
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void AcceptConnection(const ListenSocket& hListenSocket);
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void ThreadSocketHandler();
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void ThreadDNSAddressSeed();
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uint64_t CalculateKeyedNetGroup(const CAddress& ad);
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CNode* FindNode(const CNetAddr& ip);
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CNode* FindNode(const CSubNet& subNet);
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CNode* FindNode(const std::string& addrName);
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CNode* FindNode(const CService& addr);
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bool AttemptToEvictConnection();
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CNode* ConnectNode(CAddress addrConnect, const char *pszDest, bool fCountFailure);
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bool IsWhitelistedRange(const CNetAddr &addr);
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void DeleteNode(CNode* pnode);
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NodeId GetNewNodeId();
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//!check is the banlist has unwritten changes
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bool BannedSetIsDirty();
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//!set the "dirty" flag for the banlist
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void SetBannedSetDirty(bool dirty=true);
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//!clean unused entries (if bantime has expired)
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void SweepBanned();
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void DumpAddresses();
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void DumpData();
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void DumpBanlist();
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unsigned int GetReceiveFloodSize() const;
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CDataStream BeginMessage(CNode* node, int nVersion, int flags, const std::string& sCommand);
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void PushMessage(CNode* pnode, CDataStream& strm, const std::string& sCommand);
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void EndMessage(CDataStream& strm);
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// Network stats
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void RecordBytesRecv(uint64_t bytes);
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void RecordBytesSent(uint64_t bytes);
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// Network usage totals
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CCriticalSection cs_totalBytesRecv;
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CCriticalSection cs_totalBytesSent;
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uint64_t nTotalBytesRecv;
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uint64_t nTotalBytesSent;
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// outbound limit & stats
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uint64_t nMaxOutboundTotalBytesSentInCycle;
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uint64_t nMaxOutboundCycleStartTime;
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uint64_t nMaxOutboundLimit;
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uint64_t nMaxOutboundTimeframe;
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// Whitelisted ranges. Any node connecting from these is automatically
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// whitelisted (as well as those connecting to whitelisted binds).
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std::vector<CSubNet> vWhitelistedRange;
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CCriticalSection cs_vWhitelistedRange;
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unsigned int nSendBufferMaxSize;
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unsigned int nReceiveFloodSize;
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std::vector<ListenSocket> vhListenSocket;
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std::atomic<bool> fNetworkActive;
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banmap_t setBanned;
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CCriticalSection cs_setBanned;
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bool setBannedIsDirty;
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bool fAddressesInitialized;
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CAddrMan addrman;
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std::deque<std::string> vOneShots;
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CCriticalSection cs_vOneShots;
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std::vector<std::string> vAddedNodes;
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CCriticalSection cs_vAddedNodes;
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std::vector<CNode*> vNodes;
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std::list<CNode*> vNodesDisconnected;
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mutable CCriticalSection cs_vNodes;
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std::atomic<NodeId> nLastNodeId;
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boost::condition_variable messageHandlerCondition;
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/** Services this instance offers */
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ServiceFlags nLocalServices;
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/** Services this instance cares about */
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ServiceFlags nRelevantServices;
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CSemaphore *semOutbound;
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int nMaxConnections;
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int nMaxOutbound;
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int nMaxFeeler;
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std::atomic<int> nBestHeight;
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CClientUIInterface* clientInterface;
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/** SipHasher seeds for deterministic randomness */
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const uint64_t nSeed0, nSeed1;
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};
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extern std::unique_ptr<CConnman> g_connman;
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void Discover(boost::thread_group& threadGroup);
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void MapPort(bool fUseUPnP);
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unsigned short GetListenPort();
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bool BindListenPort(const CService &bindAddr, std::string& strError, bool fWhitelisted = false);
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size_t SocketSendData(CNode *pnode);
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struct CombinerAll
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{
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typedef bool result_type;
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template<typename I>
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bool operator()(I first, I last) const
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{
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while (first != last) {
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if (!(*first)) return false;
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++first;
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}
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return true;
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}
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};
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// Signals for message handling
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struct CNodeSignals
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{
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boost::signals2::signal<bool (CNode*, CConnman&), CombinerAll> ProcessMessages;
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boost::signals2::signal<bool (CNode*, CConnman&), CombinerAll> SendMessages;
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boost::signals2::signal<void (CNode*, CConnman&)> InitializeNode;
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boost::signals2::signal<void (NodeId, bool&)> FinalizeNode;
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};
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CNodeSignals& GetNodeSignals();
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enum
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{
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LOCAL_NONE, // unknown
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LOCAL_IF, // address a local interface listens on
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LOCAL_BIND, // address explicit bound to
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LOCAL_UPNP, // address reported by UPnP
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LOCAL_MANUAL, // address explicitly specified (-externalip=)
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LOCAL_MAX
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};
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bool IsPeerAddrLocalGood(CNode *pnode);
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void AdvertiseLocal(CNode *pnode);
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void SetLimited(enum Network net, bool fLimited = true);
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bool IsLimited(enum Network net);
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bool IsLimited(const CNetAddr& addr);
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bool AddLocal(const CService& addr, int nScore = LOCAL_NONE);
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bool AddLocal(const CNetAddr& addr, int nScore = LOCAL_NONE);
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bool RemoveLocal(const CService& addr);
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bool SeenLocal(const CService& addr);
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bool IsLocal(const CService& addr);
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bool GetLocal(CService &addr, const CNetAddr *paddrPeer = NULL);
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bool IsReachable(enum Network net);
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bool IsReachable(const CNetAddr &addr);
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CAddress GetLocalAddress(const CNetAddr *paddrPeer, ServiceFlags nLocalServices);
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extern bool fDiscover;
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extern bool fListen;
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extern bool fRelayTxes;
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extern limitedmap<uint256, int64_t> mapAlreadyAskedFor;
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/** Subversion as sent to the P2P network in `version` messages */
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extern std::string strSubVersion;
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struct LocalServiceInfo {
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int nScore;
|
|
int nPort;
|
|
};
|
|
|
|
extern CCriticalSection cs_mapLocalHost;
|
|
extern std::map<CNetAddr, LocalServiceInfo> mapLocalHost;
|
|
typedef std::map<std::string, uint64_t> mapMsgCmdSize; //command, total bytes
|
|
|
|
class CNodeStats
|
|
{
|
|
public:
|
|
NodeId nodeid;
|
|
ServiceFlags nServices;
|
|
bool fRelayTxes;
|
|
int64_t nLastSend;
|
|
int64_t nLastRecv;
|
|
int64_t nTimeConnected;
|
|
int64_t nTimeOffset;
|
|
std::string addrName;
|
|
int nVersion;
|
|
std::string cleanSubVer;
|
|
bool fInbound;
|
|
int nStartingHeight;
|
|
uint64_t nSendBytes;
|
|
mapMsgCmdSize mapSendBytesPerMsgCmd;
|
|
uint64_t nRecvBytes;
|
|
mapMsgCmdSize mapRecvBytesPerMsgCmd;
|
|
bool fWhitelisted;
|
|
double dPingTime;
|
|
double dPingWait;
|
|
double dMinPing;
|
|
std::string addrLocal;
|
|
CAddress addr;
|
|
};
|
|
|
|
|
|
|
|
|
|
class CNetMessage {
|
|
private:
|
|
mutable CHash256 hasher;
|
|
mutable uint256 data_hash;
|
|
public:
|
|
bool in_data; // parsing header (false) or data (true)
|
|
|
|
CDataStream hdrbuf; // partially received header
|
|
CMessageHeader hdr; // complete header
|
|
unsigned int nHdrPos;
|
|
|
|
CDataStream vRecv; // received message data
|
|
unsigned int nDataPos;
|
|
|
|
int64_t nTime; // time (in microseconds) of message receipt.
|
|
|
|
CNetMessage(const CMessageHeader::MessageStartChars& pchMessageStartIn, int nTypeIn, int nVersionIn) : hdrbuf(nTypeIn, nVersionIn), hdr(pchMessageStartIn), vRecv(nTypeIn, nVersionIn) {
|
|
hdrbuf.resize(24);
|
|
in_data = false;
|
|
nHdrPos = 0;
|
|
nDataPos = 0;
|
|
nTime = 0;
|
|
}
|
|
|
|
bool complete() const
|
|
{
|
|
if (!in_data)
|
|
return false;
|
|
return (hdr.nMessageSize == nDataPos);
|
|
}
|
|
|
|
const uint256& GetMessageHash() const;
|
|
|
|
void SetVersion(int nVersionIn)
|
|
{
|
|
hdrbuf.SetVersion(nVersionIn);
|
|
vRecv.SetVersion(nVersionIn);
|
|
}
|
|
|
|
int readHeader(const char *pch, unsigned int nBytes);
|
|
int readData(const char *pch, unsigned int nBytes);
|
|
};
|
|
|
|
|
|
/** Information about a peer */
|
|
class CNode
|
|
{
|
|
friend class CConnman;
|
|
public:
|
|
// socket
|
|
ServiceFlags nServices;
|
|
ServiceFlags nServicesExpected;
|
|
SOCKET hSocket;
|
|
size_t nSendSize; // total size of all vSendMsg entries
|
|
size_t nSendOffset; // offset inside the first vSendMsg already sent
|
|
uint64_t nSendBytes;
|
|
std::deque<CSerializeData> vSendMsg;
|
|
CCriticalSection cs_vSend;
|
|
|
|
std::deque<CInv> vRecvGetData;
|
|
std::deque<CNetMessage> vRecvMsg;
|
|
CCriticalSection cs_vRecvMsg;
|
|
uint64_t nRecvBytes;
|
|
int nRecvVersion;
|
|
|
|
int64_t nLastSend;
|
|
int64_t nLastRecv;
|
|
int64_t nTimeConnected;
|
|
int64_t nTimeOffset;
|
|
const CAddress addr;
|
|
std::string addrName;
|
|
CService addrLocal;
|
|
int nVersion;
|
|
// strSubVer is whatever byte array we read from the wire. However, this field is intended
|
|
// to be printed out, displayed to humans in various forms and so on. So we sanitize it and
|
|
// store the sanitized version in cleanSubVer. The original should be used when dealing with
|
|
// the network or wire types and the cleaned string used when displayed or logged.
|
|
std::string strSubVer, cleanSubVer;
|
|
bool fWhitelisted; // This peer can bypass DoS banning.
|
|
bool fFeeler; // If true this node is being used as a short lived feeler.
|
|
bool fOneShot;
|
|
bool fClient;
|
|
const bool fInbound;
|
|
bool fNetworkNode;
|
|
bool fSuccessfullyConnected;
|
|
bool fDisconnect;
|
|
// We use fRelayTxes for two purposes -
|
|
// a) it allows us to not relay tx invs before receiving the peer's version message
|
|
// b) the peer may tell us in its version message that we should not relay tx invs
|
|
// unless it loads a bloom filter.
|
|
bool fRelayTxes; //protected by cs_filter
|
|
bool fSentAddr;
|
|
CSemaphoreGrant grantOutbound;
|
|
CCriticalSection cs_filter;
|
|
CBloomFilter* pfilter;
|
|
int nRefCount;
|
|
const NodeId id;
|
|
|
|
const uint64_t nKeyedNetGroup;
|
|
protected:
|
|
|
|
mapMsgCmdSize mapSendBytesPerMsgCmd;
|
|
mapMsgCmdSize mapRecvBytesPerMsgCmd;
|
|
|
|
public:
|
|
uint256 hashContinue;
|
|
int nStartingHeight;
|
|
|
|
// flood relay
|
|
std::vector<CAddress> vAddrToSend;
|
|
CRollingBloomFilter addrKnown;
|
|
bool fGetAddr;
|
|
std::set<uint256> setKnown;
|
|
int64_t nNextAddrSend;
|
|
int64_t nNextLocalAddrSend;
|
|
|
|
// inventory based relay
|
|
CRollingBloomFilter filterInventoryKnown;
|
|
// Set of transaction ids we still have to announce.
|
|
// They are sorted by the mempool before relay, so the order is not important.
|
|
std::set<uint256> setInventoryTxToSend;
|
|
// List of block ids we still have announce.
|
|
// There is no final sorting before sending, as they are always sent immediately
|
|
// and in the order requested.
|
|
std::vector<uint256> vInventoryBlockToSend;
|
|
CCriticalSection cs_inventory;
|
|
std::set<uint256> setAskFor;
|
|
std::multimap<int64_t, CInv> mapAskFor;
|
|
int64_t nNextInvSend;
|
|
// Used for headers announcements - unfiltered blocks to relay
|
|
// Also protected by cs_inventory
|
|
std::vector<uint256> vBlockHashesToAnnounce;
|
|
// Used for BIP35 mempool sending, also protected by cs_inventory
|
|
bool fSendMempool;
|
|
|
|
// Last time a "MEMPOOL" request was serviced.
|
|
std::atomic<int64_t> timeLastMempoolReq;
|
|
|
|
// Block and TXN accept times
|
|
std::atomic<int64_t> nLastBlockTime;
|
|
std::atomic<int64_t> nLastTXTime;
|
|
|
|
// Ping time measurement:
|
|
// The pong reply we're expecting, or 0 if no pong expected.
|
|
uint64_t nPingNonceSent;
|
|
// Time (in usec) the last ping was sent, or 0 if no ping was ever sent.
|
|
int64_t nPingUsecStart;
|
|
// Last measured round-trip time.
|
|
int64_t nPingUsecTime;
|
|
// Best measured round-trip time.
|
|
int64_t nMinPingUsecTime;
|
|
// Whether a ping is requested.
|
|
bool fPingQueued;
|
|
// Minimum fee rate with which to filter inv's to this node
|
|
CAmount minFeeFilter;
|
|
CCriticalSection cs_feeFilter;
|
|
CAmount lastSentFeeFilter;
|
|
int64_t nextSendTimeFeeFilter;
|
|
|
|
CNode(NodeId id, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn, SOCKET hSocketIn, const CAddress &addrIn, uint64_t nKeyedNetGroupIn, uint64_t nLocalHostNonceIn, const std::string &addrNameIn = "", bool fInboundIn = false);
|
|
~CNode();
|
|
|
|
private:
|
|
CNode(const CNode&);
|
|
void operator=(const CNode&);
|
|
|
|
|
|
const uint64_t nLocalHostNonce;
|
|
// Services offered to this peer
|
|
const ServiceFlags nLocalServices;
|
|
const int nMyStartingHeight;
|
|
int nSendVersion;
|
|
public:
|
|
|
|
NodeId GetId() const {
|
|
return id;
|
|
}
|
|
|
|
uint64_t GetLocalNonce() const {
|
|
return nLocalHostNonce;
|
|
}
|
|
|
|
int GetMyStartingHeight() const {
|
|
return nMyStartingHeight;
|
|
}
|
|
|
|
int GetRefCount()
|
|
{
|
|
assert(nRefCount >= 0);
|
|
return nRefCount;
|
|
}
|
|
|
|
// requires LOCK(cs_vRecvMsg)
|
|
unsigned int GetTotalRecvSize()
|
|
{
|
|
unsigned int total = 0;
|
|
BOOST_FOREACH(const CNetMessage &msg, vRecvMsg)
|
|
total += msg.vRecv.size() + 24;
|
|
return total;
|
|
}
|
|
|
|
// requires LOCK(cs_vRecvMsg)
|
|
bool ReceiveMsgBytes(const char *pch, unsigned int nBytes, bool& complete);
|
|
|
|
// requires LOCK(cs_vRecvMsg)
|
|
void SetRecvVersion(int nVersionIn)
|
|
{
|
|
nRecvVersion = nVersionIn;
|
|
BOOST_FOREACH(CNetMessage &msg, vRecvMsg)
|
|
msg.SetVersion(nVersionIn);
|
|
}
|
|
void SetSendVersion(int nVersionIn)
|
|
{
|
|
// Send version may only be changed in the version message, and
|
|
// only one version message is allowed per session. We can therefore
|
|
// treat this value as const and even atomic as long as it's only used
|
|
// once the handshake is complete. Any attempt to set this twice is an
|
|
// error.
|
|
assert(nSendVersion == 0);
|
|
nSendVersion = nVersionIn;
|
|
}
|
|
|
|
int GetSendVersion() const
|
|
{
|
|
// The send version should always be explicitly set to
|
|
// INIT_PROTO_VERSION rather than using this value until the handshake
|
|
// is complete. See PushMessageWithVersion().
|
|
assert(nSendVersion != 0);
|
|
return nSendVersion;
|
|
}
|
|
|
|
CNode* AddRef()
|
|
{
|
|
nRefCount++;
|
|
return this;
|
|
}
|
|
|
|
void Release()
|
|
{
|
|
nRefCount--;
|
|
}
|
|
|
|
|
|
|
|
void AddAddressKnown(const CAddress& _addr)
|
|
{
|
|
addrKnown.insert(_addr.GetKey());
|
|
}
|
|
|
|
void PushAddress(const CAddress& _addr, FastRandomContext &insecure_rand)
|
|
{
|
|
// Known checking here is only to save space from duplicates.
|
|
// SendMessages will filter it again for knowns that were added
|
|
// after addresses were pushed.
|
|
if (_addr.IsValid() && !addrKnown.contains(_addr.GetKey())) {
|
|
if (vAddrToSend.size() >= MAX_ADDR_TO_SEND) {
|
|
vAddrToSend[insecure_rand.rand32() % vAddrToSend.size()] = _addr;
|
|
} else {
|
|
vAddrToSend.push_back(_addr);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void AddInventoryKnown(const CInv& inv)
|
|
{
|
|
{
|
|
LOCK(cs_inventory);
|
|
filterInventoryKnown.insert(inv.hash);
|
|
}
|
|
}
|
|
|
|
void PushInventory(const CInv& inv)
|
|
{
|
|
LOCK(cs_inventory);
|
|
if (inv.type == MSG_TX) {
|
|
if (!filterInventoryKnown.contains(inv.hash)) {
|
|
setInventoryTxToSend.insert(inv.hash);
|
|
}
|
|
} else if (inv.type == MSG_BLOCK) {
|
|
vInventoryBlockToSend.push_back(inv.hash);
|
|
}
|
|
}
|
|
|
|
void PushBlockHash(const uint256 &hash)
|
|
{
|
|
LOCK(cs_inventory);
|
|
vBlockHashesToAnnounce.push_back(hash);
|
|
}
|
|
|
|
void AskFor(const CInv& inv);
|
|
|
|
void CloseSocketDisconnect();
|
|
|
|
void copyStats(CNodeStats &stats);
|
|
|
|
ServiceFlags GetLocalServices() const
|
|
{
|
|
return nLocalServices;
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/** Return a timestamp in the future (in microseconds) for exponentially distributed events. */
|
|
int64_t PoissonNextSend(int64_t nNow, int average_interval_seconds);
|
|
|
|
#endif // BITCOIN_NET_H
|