#include "addrdb.h"
#include "addrman.h"
#include "bloom.h"
#include "compat.h"
#include "limitedmap.h"
#include "netaddress.h"
#include "protocol.h"
#include "random.h"
#include "streams.h"
#include "sync.h"
#include "uint256.h"
#include "util.h"
#include "threadinterrupt.h"
#include <atomic>
#include <deque>
#include <stdint.h>
#include <thread>
#include <memory>
#include <condition_variable>
#include <arpa/inet.h>
#include <boost/filesystem/path.hpp>
#include <boost/foreach.hpp>
#include <boost/signals2/signal.hpp>

Classes
struct	AddedNodeInfo

class	CConnman

struct	CConnman::Options

struct	CConnman::CFullyConnectedOnly

struct	CConnman::CAllNodes

struct	CConnman::ListenSocket

struct	CombinerAll

struct	CNodeSignals

struct	LocalServiceInfo

class	CNodeStats

class	CNetMessage

class	CNode

class	CExplicitNetCleanup

Typedefs
typedef int	NodeId

typedef std::map< std::string, uint64_t >	mapMsgCmdSize

Enumerations
enum	{ LOCAL_NONE, LOCAL_IF, LOCAL_BIND, LOCAL_UPNP, LOCAL_MANUAL, LOCAL_MAX }

Functions
void	Discover (boost::thread_group &threadGroup)

void	MapPort (bool fUseUPnP)

unsigned short	GetListenPort ()

bool	BindListenPort (const CService &bindAddr, std::string &strError, bool fWhitelisted=false)

CNodeSignals &	GetNodeSignals ()

bool	IsPeerAddrLocalGood (CNode *pnode)

void	AdvertiseLocal (CNode *pnode)

void	SetLimited (enum Network net, bool fLimited=true)

bool	IsLimited (enum Network net)

bool	IsLimited (const CNetAddr &addr)

bool	AddLocal (const CService &addr, int nScore=LOCAL_NONE)

bool	AddLocal (const CNetAddr &addr, int nScore=LOCAL_NONE)

bool	RemoveLocal (const CService &addr)

bool	SeenLocal (const CService &addr)

bool	IsLocal (const CService &addr)

bool	GetLocal (CService &addr, const CNetAddr *paddrPeer=NULL)

bool	IsReachable (enum Network net)

bool	IsReachable (const CNetAddr &addr)

CAddress	GetLocalAddress (const CNetAddr *paddrPeer, ServiceFlags nLocalServices)

int64_t	PoissonNextSend (int64_t nNow, int average_interval_seconds)

Variables
static const int	PING_INTERVAL = 2 * 60

static const int	TIMEOUT_INTERVAL = 20 * 60

static const int	WARNING_INTERVAL = 10 * 60

static const int	FEELER_INTERVAL = 120

static const unsigned int	MAX_INV_SZ = 50000

static const unsigned int	MAX_ADDR_TO_SEND = 1000

static const unsigned int	MAX_PROTOCOL_MESSAGE_LENGTH = 3 * 1024 * 1024

static const unsigned int	MAX_SUBVERSION_LENGTH = 256

static const int	MAX_OUTBOUND_CONNECTIONS = 8

static const int	MAX_OUTBOUND_MASTERNODE_CONNECTIONS = 20

static const bool	DEFAULT_LISTEN = true

static const bool	DEFAULT_UPNP = false

static const size_t	MAPASKFOR_MAX_SZ = MAX_INV_SZ

static const size_t	SETASKFOR_MAX_SZ = 2 * MAX_INV_SZ

static const unsigned int	DEFAULT_MAX_PEER_CONNECTIONS = 125

static const uint64_t	DEFAULT_MAX_UPLOAD_TARGET = 0

static const bool	DEFAULT_BLOCKSONLY = false

static const bool	DEFAULT_FORCEDNSSEED = false

static const size_t	DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

static const size_t	DEFAULT_MAXSENDBUFFER = 1 * 1000

static const ServiceFlags	REQUIRED_SERVICES = NODE_NETWORK

static const unsigned int	DEFAULT_MISBEHAVING_BANTIME = 60 * 60 * 24

std::unique_ptr< CConnman >	g_connman

bool	fDiscover

bool	fListen

bool	fRelayTxes

std::map< CInv, CDataStream >	mapRelay

std::deque< std::pair< int64_t, CInv > >	vRelayExpiration

CCriticalSection	cs_mapRelay

limitedmap< uint256, int64_t >	mapAlreadyAskedFor

std::string	strSubVersion

CCriticalSection	cs_mapLocalHost

std::map< CNetAddr, LocalServiceInfo >	mapLocalHost

Typedef Documentation

◆ mapMsgCmdSize

typedef std::map<std::string, uint64_t> mapMsgCmdSize

Definition at line 589 of file net.h.

◆ NodeId

typedef int NodeId

Definition at line 94 of file net.h.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
LOCAL_NONE
LOCAL_IF
LOCAL_BIND
LOCAL_UPNP
LOCAL_MANUAL
LOCAL_MAX

Definition at line 543 of file net.h.

Function Documentation

◆ AddLocal() [1/2]

bool AddLocal	(	const CService &	addr,
		int	nScore = `LOCAL_NONE`
	)

Definition at line 205 of file net.cpp.

Referenced by TorController::add_onion_cb(), AddLocal(), AppInit2(), CConnman::BindListenPort(), and Discover().

◆ AddLocal() [2/2]

bool AddLocal	(	const CNetAddr &	addr,
		int	nScore = `LOCAL_NONE`
	)

Definition at line 231 of file net.cpp.

◆ AdvertiseLocal()

void AdvertiseLocal ( CNode * pnode )

Definition at line 183 of file net.cpp.

Referenced by SendMessages().

◆ BindListenPort()

bool BindListenPort	(	const CService &	bindAddr,
		std::string &	strError,
		bool	fWhitelisted = `false`
	)

◆ Discover()

void Discover ( boost::thread_group & threadGroup )

Definition at line 2062 of file net.cpp.

Referenced by AppInit2().

◆ GetListenPort()

unsigned short GetListenPort ( )

Definition at line 100 of file net.cpp.

Referenced by TorController::add_onion_cb(), AddLocal(), AppInit2(), TorController::auth_cb(), and GetLocalAddress().

◆ GetLocal()

bool GetLocal	(	CService &	addr,
		const CNetAddr *	paddrPeer = `NULL`
	)

Definition at line 106 of file net.cpp.

Referenced by GetLocalAddress(), and CActiveMasternode::ManageStateInitial().

◆ GetLocalAddress()

CAddress GetLocalAddress	(	const CNetAddr *	paddrPeer,
		ServiceFlags	nLocalServices
	)

Definition at line 155 of file net.cpp.

Referenced by AdvertiseLocal(), and ProcessMessage().

◆ GetNodeSignals()

CNodeSignals& GetNodeSignals ( )

Definition at line 92 of file net.cpp.

Referenced by CConnman::AcceptConnection(), AppInit2(), CConnman::ConnectNode(), CConnman::DeleteNode(), PrepareShutdown(), CConnman::Start(), and CConnman::ThreadMessageHandler().

◆ IsLimited() [1/2]

bool IsLimited ( enum Network net )

Definition at line 253 of file net.cpp.

Referenced by AddLocal(), Bind(), GetNetworksInfo(), IsLimited(), IsPeerAddrLocalGood(), and CConnman::ThreadOpenConnections().

◆ IsLimited() [2/2]

bool IsLimited ( const CNetAddr & addr )

Definition at line 259 of file net.cpp.

◆ IsLocal()

bool IsLocal ( const CService & addr )

check whether a given address is potentially local

Definition at line 278 of file net.cpp.

Referenced by CConnman::ConnectNode(), CConnman::OpenNetworkConnection(), and CConnman::ThreadOpenConnections().

◆ IsPeerAddrLocalGood()

bool IsPeerAddrLocalGood ( CNode * pnode )

Definition at line 176 of file net.cpp.

Referenced by AdvertiseLocal(), and ProcessMessage().

◆ IsReachable() [1/2]

bool IsReachable ( enum Network net )

check whether a given network is one we can probably connect to

Definition at line 285 of file net.cpp.

Referenced by GetNetworksInfo(), IsReachable(), CMasternode::IsValidNetAddr(), and ProcessMessage().

◆ IsReachable() [2/2]

bool IsReachable ( const CNetAddr & addr )

check whether a given address is in a network we can probably connect to

Definition at line 292 of file net.cpp.

◆ MapPort()

void MapPort ( bool fUseUPnP )

Definition at line 1511 of file net.cpp.

Referenced by AppInit2(), PrepareShutdown(), and OptionsModel::setData().

◆ PoissonNextSend()

int64_t PoissonNextSend	(	int64_t	nNow,
		int	average_interval_seconds
	)

Return a timestamp in the future (in microseconds) for exponentially distributed events.

Definition at line 2892 of file net.cpp.

Referenced by SendMessages(), and CConnman::ThreadOpenConnections().

◆ RemoveLocal()

bool RemoveLocal ( const CService & addr )

Definition at line 236 of file net.cpp.

Referenced by TorController::disconnected_cb(), and TorController::~TorController().

◆ SeenLocal()

bool SeenLocal ( const CService & addr )

vote for a local address

Definition at line 265 of file net.cpp.

Referenced by ProcessMessage().

◆ SetLimited()

void SetLimited	(	enum Network	net,
		bool	fLimited
	)

Make a particular network entirely off-limits (no automatic connects to it)

Definition at line 245 of file net.cpp.

Referenced by AppInit2(), and TorController::auth_cb().

Variable Documentation

◆ cs_mapLocalHost

CCriticalSection cs_mapLocalHost

Definition at line 79 of file net.cpp.

Referenced by AddLocal(), GetLocal(), getnetworkinfo(), GetnScore(), IsLimited(), IsLocal(), IsReachable(), RemoveLocal(), SeenLocal(), and SetLimited().

◆ cs_mapRelay

CCriticalSection cs_mapRelay

Definition at line 87 of file net.cpp.

Referenced by ProcessGetData(), and CConnman::RelayTransaction().

◆ DEFAULT_BLOCKSONLY

const bool DEFAULT_BLOCKSONLY = false

static

Default for blocks only

Definition at line 83 of file net.h.

Referenced by AppInit2(), HelpMessage(), and InitParameterInteraction().

◆ DEFAULT_FORCEDNSSEED

const bool DEFAULT_FORCEDNSSEED = false

static

Definition at line 85 of file net.h.

Referenced by HelpMessage(), and CConnman::ThreadDNSAddressSeed().

◆ DEFAULT_LISTEN

const bool DEFAULT_LISTEN = true

static

-listen default

Definition at line 67 of file net.h.

Referenced by AppInit2(), OptionsModel::Init(), and InitParameterInteraction().

◆ DEFAULT_MAX_PEER_CONNECTIONS

const unsigned int DEFAULT_MAX_PEER_CONNECTIONS = 125

static

The maximum number of peer connections to maintain.

Definition at line 79 of file net.h.

Referenced by AppInit2(), and HelpMessage().

◆ DEFAULT_MAX_UPLOAD_TARGET

const uint64_t DEFAULT_MAX_UPLOAD_TARGET = 0

static

The default for -maxuploadtarget. 0 = Unlimited

Definition at line 81 of file net.h.

Referenced by AppInit2(), and HelpMessage().

◆ DEFAULT_MAXRECEIVEBUFFER

const size_t DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

static

Definition at line 86 of file net.h.

Referenced by AppInit2(), and HelpMessage().

◆ DEFAULT_MAXSENDBUFFER

const size_t DEFAULT_MAXSENDBUFFER = 1 * 1000

static

Definition at line 87 of file net.h.

Referenced by AppInit2(), and HelpMessage().

◆ DEFAULT_MISBEHAVING_BANTIME

const unsigned int DEFAULT_MISBEHAVING_BANTIME = 60 * 60 * 24

static

Definition at line 92 of file net.h.

Referenced by CConnman::Ban(), and HelpMessage().

◆ DEFAULT_UPNP

const bool DEFAULT_UPNP = false

static

-upnp default

Definition at line 72 of file net.h.

Referenced by AppInit2(), and OptionsModel::Init().

◆ fDiscover

bool fDiscover

Definition at line 76 of file net.cpp.

Referenced by AddLocal(), AppInit2(), CConnman::BindListenPort(), Discover(), and IsPeerAddrLocalGood().

◆ FEELER_INTERVAL

const int FEELER_INTERVAL = 120

static

Run the feeler connection loop once every 2 minutes or 120 seconds.

Definition at line 53 of file net.h.

Referenced by CConnman::ThreadOpenConnections().

◆ fListen

bool fListen

Definition at line 77 of file net.cpp.

Referenced by AdvertiseLocal(), AppInit2(), GetLocal(), CActiveMasternode::ManageStateInitial(), and ProcessMessage().

◆ fRelayTxes

bool fRelayTxes

Definition at line 78 of file net.cpp.

Referenced by AppInit2(), getnetworkinfo(), and ProcessMessage().

◆ g_connman

std::unique_ptr<CConnman> g_connman

Definition at line 103 of file init.cpp.

Referenced by addnode(), AppInit2(), RPCConsole::banSelectedNode(), clearbanned(), disconnectnode(), RPCConsole::disconnectSelectedNode(), getaddednodeinfo(), getblocktemplate(), getconnectioncount(), getinfo(), getnettotals(), ClientModel::getNetworkActive(), getnetworkinfo(), ClientModel::getNumConnections(), getpeerinfo(), ClientModel::getTotalBytesRecv(), ClientModel::getTotalBytesSent(), gobject(), Interrupt(), listbanned(), masternode(), masternodebroadcast(), mnsync(), ping(), PrepareShutdown(), privatesend(), OverviewPage::privateSendAuto(), BanTablePriv::refreshBanlist(), PeerTablePriv::refreshPeers(), CMasternodeVerification::Relay(), CDarkSendRelay::RelayThroughNode(), resendwallettransactions(), WalletModel::sendCoins(), sendmany(), SendMoney(), sendrawtransaction(), setban(), setgenerate(), ClientModel::setNetworkActive(), setnetworkactive(), spork(), MasternodeList::StartAlias(), MasternodeList::StartAll(), RPCConsole::unbanSelectedNode(), and voteraw().

◆ mapAlreadyAskedFor

limitedmap<uint256, int64_t> mapAlreadyAskedFor

Referenced by CNode::AskFor(), and ProcessMessage().

◆ MAPASKFOR_MAX_SZ

const size_t MAPASKFOR_MAX_SZ = MAX_INV_SZ

static

The maximum number of entries in mapAskFor

Definition at line 75 of file net.h.

Referenced by CNode::AskFor().

◆ mapLocalHost

std::map<CNetAddr, LocalServiceInfo> mapLocalHost

Definition at line 80 of file net.cpp.

Referenced by AddLocal(), GetLocal(), getnetworkinfo(), GetnScore(), IsLocal(), RemoveLocal(), and SeenLocal().

◆ mapRelay

std::map<CInv, CDataStream> mapRelay

Definition at line 85 of file net.cpp.

Referenced by ProcessGetData(), and CConnman::RelayTransaction().

◆ MAX_ADDR_TO_SEND

const unsigned int MAX_ADDR_TO_SEND = 1000

static

The maximum number of new addresses to accumulate before announcing.

Definition at line 57 of file net.h.

Referenced by CNode::PushAddress().

◆ MAX_INV_SZ

const unsigned int MAX_INV_SZ = 50000

static

The maximum number of entries in an 'inv' protocol message

Definition at line 55 of file net.h.

Referenced by ProcessMessage(), and CMasternodePayments::RequestLowDataPaymentBlocks().

◆ MAX_OUTBOUND_CONNECTIONS

const int MAX_OUTBOUND_CONNECTIONS = 8

static

Maximum number of outgoing nodes

Definition at line 63 of file net.h.

Referenced by AppInit2().

◆ MAX_OUTBOUND_MASTERNODE_CONNECTIONS

const int MAX_OUTBOUND_MASTERNODE_CONNECTIONS = 20

static

Maximum number if outgoing masternodes

Definition at line 65 of file net.h.

Referenced by CConnman::Start(), and CConnman::Stop().

◆ MAX_PROTOCOL_MESSAGE_LENGTH

const unsigned int MAX_PROTOCOL_MESSAGE_LENGTH = 3 * 1024 * 1024

static

Maximum length of incoming protocol messages (no message over 3 MiB is currently acceptable).

Definition at line 59 of file net.h.

Referenced by CNode::ReceiveMsgBytes().

◆ MAX_SUBVERSION_LENGTH

const unsigned int MAX_SUBVERSION_LENGTH = 256

static

Maximum length of strSubVer in version message

Definition at line 61 of file net.h.

Referenced by AppInit2(), and ProcessMessage().

◆ PING_INTERVAL

const int PING_INTERVAL = 2 * 60

static

Time between pings automatically sent out for latency probing and keepalive (in seconds).

Definition at line 47 of file net.h.

Referenced by SendMessages().

◆ REQUIRED_SERVICES

const ServiceFlags REQUIRED_SERVICES = NODE_NETWORK

static

Definition at line 89 of file net.h.

Referenced by ProcessMessage(), and CConnman::ThreadOpenConnections().

◆ SETASKFOR_MAX_SZ

const size_t SETASKFOR_MAX_SZ = 2 * MAX_INV_SZ

static

The maximum number of entries in setAskFor (larger due to getdata latency)

Definition at line 77 of file net.h.

Referenced by CNode::AskFor(), and CGovernanceManager::RequestGovernanceObjectVotes().

◆ strSubVersion

std::string strSubVersion

Subversion as sent to the P2P network in version messages

Definition at line 83 of file net.cpp.

Referenced by AppInit2(), ClientModel::formatSubVersion(), and getnetworkinfo().

◆ TIMEOUT_INTERVAL

const int TIMEOUT_INTERVAL = 20 * 60

static

Time after which to disconnect, after waiting for a ping response (or inactivity).

Definition at line 49 of file net.h.

Referenced by CConnman::ThreadSocketHandler().

◆ vRelayExpiration

std::deque<std::pair<int64_t, CInv> > vRelayExpiration

Definition at line 86 of file net.cpp.

Referenced by CConnman::RelayTransaction().

◆ WARNING_INTERVAL

const int WARNING_INTERVAL = 10 * 60

static

Minimum time between warnings printed to log.

Definition at line 51 of file net.h.

Referenced by CNode::AskFor().

Classes

Typedefs

Enumerations

Functions

Variables

Typedef Documentation

◆ mapMsgCmdSize

◆ NodeId

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ AddLocal() [1/2]

◆ AddLocal() [2/2]

◆ AdvertiseLocal()

◆ BindListenPort()

◆ Discover()

◆ GetListenPort()

◆ GetLocal()

◆ GetLocalAddress()

◆ GetNodeSignals()

◆ IsLimited() [1/2]

◆ IsLimited() [2/2]

◆ IsLocal()

◆ IsPeerAddrLocalGood()

◆ IsReachable() [1/2]

◆ IsReachable() [2/2]

◆ MapPort()

◆ PoissonNextSend()

◆ RemoveLocal()

◆ SeenLocal()

◆ SetLimited()

Variable Documentation

◆ cs_mapLocalHost

◆ cs_mapRelay

◆ DEFAULT_BLOCKSONLY

◆ DEFAULT_FORCEDNSSEED

◆ DEFAULT_LISTEN

◆ DEFAULT_MAX_PEER_CONNECTIONS

◆ DEFAULT_MAX_UPLOAD_TARGET

◆ DEFAULT_MAXRECEIVEBUFFER

◆ DEFAULT_MAXSENDBUFFER

◆ DEFAULT_MISBEHAVING_BANTIME

◆ DEFAULT_UPNP

◆ fDiscover

◆ FEELER_INTERVAL

◆ fListen

◆ fRelayTxes

◆ g_connman

◆ mapAlreadyAskedFor

◆ MAPASKFOR_MAX_SZ

◆ mapLocalHost

◆ mapRelay

◆ MAX_ADDR_TO_SEND

◆ MAX_INV_SZ

◆ MAX_OUTBOUND_CONNECTIONS

◆ MAX_OUTBOUND_MASTERNODE_CONNECTIONS

◆ MAX_PROTOCOL_MESSAGE_LENGTH

◆ MAX_SUBVERSION_LENGTH

◆ PING_INTERVAL

◆ REQUIRED_SERVICES

◆ SETASKFOR_MAX_SZ

◆ strSubVersion

◆ TIMEOUT_INTERVAL

◆ vRelayExpiration

◆ WARNING_INTERVAL