#include <net.h>

Collaboration diagram for CConnman:

Classes
struct	CachedAddrResponse
	Cache responses to addr requests to minimize privacy leak. More...

struct	ListenSocket

struct	Options

Public Types
enum	NumConnections { CONNECTIONS_NONE = 0, CONNECTIONS_IN = (1U << 0), CONNECTIONS_OUT = (1U << 1), CONNECTIONS_ALL = (CONNECTIONS_IN \| CONNECTIONS_OUT) }

using	NodeFn = std::function< void(CNode *)>

Public Member Functions
void	Init (const Options &connOptions)

	CConnman (uint64_t seed0, uint64_t seed1, bool network_active=true)

	~CConnman ()

bool	Start (CScheduler &scheduler, const Options &options)

void	StopThreads ()

void	StopNodes ()

void	Stop ()

void	Interrupt ()

bool	GetNetworkActive () const

bool	GetUseAddrmanOutgoing () const

void	SetNetworkActive (bool active)

void	OpenNetworkConnection (const CAddress &addrConnect, bool fCountFailure, CSemaphoreGrant grantOutbound, const char strDest, ConnectionType conn_type)

bool	CheckIncomingNonce (uint64_t nonce)

bool	ForNode (NodeId id, std::function< bool(CNode *pnode)> func)

void	PushMessage (CNode *pnode, CSerializedNetMsg &&msg)

void	ForEachNode (const NodeFn &func)

void	ForEachNode (const NodeFn &func) const

template<typename Callable , typename CallableAfter >
void	ForEachNodeThen (Callable &&pre, CallableAfter &&post)

template<typename Callable , typename CallableAfter >
void	ForEachNodeThen (Callable &&pre, CallableAfter &&post) const

void	SetServices (const CService &addr, ServiceFlags nServices)

void	MarkAddressGood (const CAddress &addr)

bool	AddNewAddresses (const std::vector< CAddress > &vAddr, const CAddress &addrFrom, int64_t nTimePenalty=0)

std::vector< CAddress >	GetAddresses (size_t max_addresses, size_t max_pct)

std::vector< CAddress >	GetAddresses (CNode &requestor, size_t max_addresses, size_t max_pct)
	Cache is used to minimize topology leaks, so it should be used for all non-trusted calls, for example, p2p. More...

void	SetTryNewOutboundPeer (bool flag)

bool	GetTryNewOutboundPeer ()

int	GetExtraOutboundCount ()

bool	AddNode (const std::string &node)

bool	RemoveAddedNode (const std::string &node)

std::vector< AddedNodeInfo >	GetAddedNodeInfo ()

size_t	GetNodeCount (NumConnections num)

void	GetNodeStats (std::vector< CNodeStats > &vstats)

bool	DisconnectNode (const std::string &node)

bool	DisconnectNode (const CSubNet &subnet)

bool	DisconnectNode (const CNetAddr &addr)

bool	DisconnectNode (NodeId id)

ServiceFlags	GetLocalServices () const
	Used to convey which local services we are offering peers during node connection. More...

void	SetMaxOutboundTarget (uint64_t limit)
	set the max outbound target in bytes More...

uint64_t	GetMaxOutboundTarget ()

void	SetMaxOutboundTimeframe (uint64_t timeframe)
	set the timeframe for the max outbound target More...

uint64_t	GetMaxOutboundTimeframe ()

bool	OutboundTargetReached (bool historicalBlockServingLimit)
	check if the outbound target is reached if param historicalBlockServingLimit is set true, the function will response true if the limit for serving historical blocks has been reached More...

uint64_t	GetOutboundTargetBytesLeft ()
	response the bytes left in the current max outbound cycle in case of no limit, it will always response 0 More...

uint64_t	GetMaxOutboundTimeLeftInCycle ()
	response the time in second left in the current max outbound cycle in case of no limit, it will always response 0 More...

uint64_t	GetTotalBytesRecv ()

uint64_t	GetTotalBytesSent ()

void	SetBestHeight (int height)

int	GetBestHeight () const

CSipHasher	GetDeterministicRandomizer (uint64_t id) const
	Get a unique deterministic randomizer. More...

unsigned int	GetReceiveFloodSize () const

void	WakeMessageHandler ()

int64_t	PoissonNextSendInbound (int64_t now, int average_interval_seconds)
	Attempts to obfuscate tx time through exponentially distributed emitting. More...

void	SetAsmap (std::vector< bool > asmap)

Private Member Functions
bool	BindListenPort (const CService &bindAddr, bilingual_str &strError, NetPermissionFlags permissions)

bool	Bind (const CService &addr, unsigned int flags, NetPermissionFlags permissions)

bool	InitBinds (const std::vector< CService > &binds, const std::vector< NetWhitebindPermissions > &whiteBinds, const std::vector< CService > &onion_binds)

void	ThreadOpenAddedConnections ()

void	AddAddrFetch (const std::string &strDest)

void	ProcessAddrFetch ()

void	ThreadOpenConnections (std::vector< std::string > connect)

void	ThreadMessageHandler ()

void	AcceptConnection (const ListenSocket &hListenSocket)

void	DisconnectNodes ()

void	NotifyNumConnectionsChanged ()

void	InactivityCheck (CNode *pnode)

bool	GenerateSelectSet (std::set< SOCKET > &recv_set, std::set< SOCKET > &send_set, std::set< SOCKET > &error_set)

void	SocketEvents (std::set< SOCKET > &recv_set, std::set< SOCKET > &send_set, std::set< SOCKET > &error_set)

void	SocketHandler ()

void	ThreadSocketHandler ()

void	ThreadDNSAddressSeed ()

uint64_t	CalculateKeyedNetGroup (const CAddress &ad) const

CNode *	FindNode (const CNetAddr &ip)

CNode *	FindNode (const CSubNet &subNet)

CNode *	FindNode (const std::string &addrName)

CNode *	FindNode (const CService &addr)

bool	AlreadyConnectedToAddress (const CAddress &addr)
	Determine whether we're already connected to a given address, in order to avoid initiating duplicate connections. More...

bool	AttemptToEvictConnection ()
	Try to find a connection to evict when the node is full. More...

CNode *	ConnectNode (CAddress addrConnect, const char *pszDest, bool fCountFailure, ConnectionType conn_type)

void	AddWhitelistPermissionFlags (NetPermissionFlags &flags, const CNetAddr &addr) const

void	DeleteNode (CNode *pnode)

NodeId	GetNewNodeId ()

size_t	SocketSendData (CNode *pnode) const

void	DumpAddresses ()

void	RecordBytesRecv (uint64_t bytes)

void	RecordBytesSent (uint64_t bytes)

std::vector< CAddress >	GetCurrentBlockRelayOnlyConns () const
	Return vector of current BLOCK_RELAY peers. More...

uint64_t nTotalBytesRecv	GUARDED_BY (cs_totalBytesRecv)

uint64_t nTotalBytesSent	GUARDED_BY (cs_totalBytesSent)

uint64_t nMaxOutboundTotalBytesSentInCycle	GUARDED_BY (cs_totalBytesSent)

uint64_t nMaxOutboundCycleStartTime	GUARDED_BY (cs_totalBytesSent)

uint64_t nMaxOutboundLimit	GUARDED_BY (cs_totalBytesSent)

uint64_t nMaxOutboundTimeframe	GUARDED_BY (cs_totalBytesSent)

std::deque< std::string > m_addr_fetches	GUARDED_BY (m_addr_fetches_mutex)

std::vector< std::string > vAddedNodes	GUARDED_BY (cs_vAddedNodes)

std::vector< CNode * > vNodes	GUARDED_BY (cs_vNodes)

bool fMsgProcWake	GUARDED_BY (mutexMsgProc)
	flag for waking the message processor. More...

Static Private Member Functions
static bool	NodeFullyConnected (const CNode *pnode)

Private Attributes
RecursiveMutex	cs_totalBytesRecv

RecursiveMutex	cs_totalBytesSent

int64_t	m_peer_connect_timeout

std::vector < NetWhitelistPermissions >	vWhitelistedRange

unsigned int	nSendBufferMaxSize {0}

unsigned int	nReceiveFloodSize {0}

std::vector< ListenSocket >	vhListenSocket

std::atomic< bool >	fNetworkActive {true}

bool	fAddressesInitialized {false}

CAddrMan	addrman

RecursiveMutex	m_addr_fetches_mutex

RecursiveMutex	cs_vAddedNodes

std::list< CNode * >	vNodesDisconnected

RecursiveMutex	cs_vNodes

std::atomic< NodeId >	nLastNodeId {0}

unsigned int	nPrevNodeCount {0}

std::map< uint64_t, CachedAddrResponse >	m_addr_response_caches
	Addr responses stored in different caches per (network, local socket) prevent cross-network node identification. More...

ServiceFlags	nLocalServices
	Services this instance offers. More...

std::unique_ptr< CSemaphore >	semOutbound

std::unique_ptr< CSemaphore >	semAddnode

int	nMaxConnections

int	m_max_outbound_full_relay

int	m_max_outbound_block_relay

int	nMaxAddnode

int	nMaxFeeler

int	m_max_outbound

bool	m_use_addrman_outgoing

std::atomic< int >	nBestHeight

CClientUIInterface *	clientInterface

NetEventsInterface *	m_msgproc

BanMan *	m_banman
	Pointer to this node's banman. More...

std::vector< CAddress >	m_anchors
	Addresses that were saved during the previous clean shutdown. More...

const uint64_t	nSeed0
	SipHasher seeds for deterministic randomness. More...

const uint64_t	nSeed1

std::condition_variable	condMsgProc

Mutex	mutexMsgProc

std::atomic< bool >	flagInterruptMsgProc {false}

CThreadInterrupt	interruptNet

std::thread	threadDNSAddressSeed

std::thread	threadSocketHandler

std::thread	threadOpenAddedConnections

std::thread	threadOpenConnections

std::thread	threadMessageHandler

std::atomic_bool	m_try_another_outbound_peer
	flag for deciding to connect to an extra outbound peer, in excess of m_max_outbound_full_relay This takes the place of a feeler connection More...

std::atomic< int64_t >	m_next_send_inv_to_incoming {0}

std::vector< CService >	m_onion_binds
	A vector of -bind=<address>:<port>=onion arguments each of which is an address and port that are designated for incoming Tor connections. More...

Friends
struct	CConnmanTest

struct	ConnmanTestMsg

Detailed Description

Definition at line 187 of file net.h.

Member Typedef Documentation

using CConnman::NodeFn = std::function<void(CNode*)>

Definition at line 278 of file net.h.

Member Enumeration Documentation

enum CConnman::NumConnections

Enumerator
CONNECTIONS_NONE
CONNECTIONS_IN
CONNECTIONS_OUT
CONNECTIONS_ALL

Definition at line 191 of file net.h.

Constructor & Destructor Documentation

CConnman::CConnman	(	uint64_t	seed0,
		uint64_t	seed1,
		bool	network_active = `true`
	)

Definition at line 2391 of file net.cpp.

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CConnman::~CConnman ( )

Definition at line 2665 of file net.cpp.

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Member Function Documentation

void CConnman::AcceptConnection ( const ListenSocket & hListenSocket )

private

Definition at line 1047 of file net.cpp.

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void CConnman::AddAddrFetch ( const std::string & strDest )

private

Definition at line 124 of file net.cpp.

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bool CConnman::AddNewAddresses	(	const std::vector< CAddress > &	vAddr,
		const CAddress &	addrFrom,
		int64_t	nTimePenalty = `0`
	)

Definition at line 2681 of file net.cpp.

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bool CConnman::AddNode ( const std::string & node )

Definition at line 2740 of file net.cpp.

void CConnman::AddWhitelistPermissionFlags	(	NetPermissionFlags &	flags,
		const CNetAddr &	addr
	)		const

private

Definition at line 505 of file net.cpp.

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bool CConnman::AlreadyConnectedToAddress ( const CAddress & addr )

private

Determine whether we're already connected to a given address, in order to avoid initiating duplicate connections.

Definition at line 361 of file net.cpp.

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bool CConnman::AttemptToEvictConnection ( )

private

Try to find a connection to evict when the node is full.

Extreme care must be taken to avoid opening the node to attacker triggered network partitioning. The strategy used here is to protect a small number of peers for each of several distinct characteristics which are difficult to forge. In order to partition a node the attacker must be simultaneously better at all of them than honest peers.

Definition at line 938 of file net.cpp.

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bool CConnman::Bind	(	const CService &	addr,
		unsigned int	flags,
		NetPermissionFlags	permissions
	)

private

Definition at line 2407 of file net.cpp.

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bool CConnman::BindListenPort	(	const CService &	bindAddr,
		bilingual_str &	strError,
		NetPermissionFlags	permissions
	)

private

Definition at line 2263 of file net.cpp.

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uint64_t CConnman::CalculateKeyedNetGroup ( const CAddress & ad ) const

private

Definition at line 3072 of file net.cpp.

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bool CConnman::CheckIncomingNonce ( uint64_t nonce )

Definition at line 366 of file net.cpp.

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CNode * CConnman::ConnectNode	(	CAddress	addrConnect,
		const char *	pszDest,
		bool	fCountFailure,
		ConnectionType	conn_type
	)

private

debug print

Definition at line 392 of file net.cpp.

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void CConnman::DeleteNode ( CNode * pnode )

private

Definition at line 2654 of file net.cpp.

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bool CConnman::DisconnectNode ( const std::string & node )

Definition at line 2790 of file net.cpp.

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bool CConnman::DisconnectNode ( const CSubNet & subnet )

Definition at line 2800 of file net.cpp.

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bool CConnman::DisconnectNode ( const CNetAddr & addr )

Definition at line 2813 of file net.cpp.

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bool CConnman::DisconnectNode ( NodeId id )

Definition at line 2818 of file net.cpp.

void CConnman::DisconnectNodes ( )

private

Definition at line 1163 of file net.cpp.

void CConnman::DumpAddresses ( )

private

Definition at line 1801 of file net.cpp.

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CNode * CConnman::FindNode ( const CNetAddr & ip )

private

Definition at line 317 of file net.cpp.

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CNode * CConnman::FindNode ( const CSubNet & subNet )

private

Definition at line 328 of file net.cpp.

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CNode * CConnman::FindNode ( const std::string & addrName )

private

Definition at line 339 of file net.cpp.

CNode * CConnman::FindNode ( const CService & addr )

private

Definition at line 350 of file net.cpp.

void CConnman::ForEachNode ( const NodeFn & func )

inline

Definition at line 279 of file net.h.

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void CConnman::ForEachNode ( const NodeFn & func ) const

inline

Definition at line 288 of file net.h.

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template<typename Callable , typename CallableAfter >

void CConnman::ForEachNodeThen	(	Callable &&	pre,
		CallableAfter &&	post
	)

inline

Definition at line 298 of file net.h.

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template<typename Callable , typename CallableAfter >

void CConnman::ForEachNodeThen	(	Callable &&	pre,
		CallableAfter &&	post
	)		const

inline

Definition at line 309 of file net.h.

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bool CConnman::ForNode	(	NodeId	id,
		std::function< bool(CNode *pnode)>	func
	)

Definition at line 3038 of file net.cpp.

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bool CConnman::GenerateSelectSet	(	std::set< SOCKET > &	recv_set,
		std::set< SOCKET > &	send_set,
		std::set< SOCKET > &	error_set
	)

private

Definition at line 1269 of file net.cpp.

std::vector< AddedNodeInfo > CConnman::GetAddedNodeInfo ( )

Definition at line 2097 of file net.cpp.

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std::vector< CAddress > CConnman::GetAddresses	(	size_t	max_addresses,
		size_t	max_pct
	)

Definition at line 2686 of file net.cpp.

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std::vector< CAddress > CConnman::GetAddresses	(	CNode &	requestor,
		size_t	max_addresses,
		size_t	max_pct
	)

Cache is used to minimize topology leaks, so it should be used for all non-trusted calls, for example, p2p.

A non-malicious call (from RPC or a peer with addr permission) should call the function without a parameter to avoid using the cache.

Definition at line 2697 of file net.cpp.

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int CConnman::GetBestHeight ( ) const

Definition at line 2948 of file net.cpp.

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std::vector< CAddress > CConnman::GetCurrentBlockRelayOnlyConns ( ) const

private

Return vector of current BLOCK_RELAY peers.

Definition at line 2084 of file net.cpp.

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CSipHasher CConnman::GetDeterministicRandomizer ( uint64_t id ) const

Get a unique deterministic randomizer.

Definition at line 3067 of file net.cpp.

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int CConnman::GetExtraOutboundCount ( )

Definition at line 1846 of file net.cpp.

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ServiceFlags CConnman::GetLocalServices ( ) const

Used to convey which local services we are offering peers during node connection.

The data returned by this is used in CNode construction, which is used to advertise which services we are offering that peer during net_processing.cpp:PushNodeVersion().

Definition at line 2938 of file net.cpp.

uint64_t CConnman::GetMaxOutboundTarget ( )

Definition at line 2859 of file net.cpp.

uint64_t CConnman::GetMaxOutboundTimeframe ( )

Definition at line 2865 of file net.cpp.

uint64_t CConnman::GetMaxOutboundTimeLeftInCycle ( )

response the time in second left in the current max outbound cycle in case of no limit, it will always response 0

Definition at line 2871 of file net.cpp.

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bool CConnman::GetNetworkActive ( ) const

inline

Definition at line 268 of file net.h.

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NodeId CConnman::GetNewNodeId ( )

private

Definition at line 2401 of file net.cpp.

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size_t CConnman::GetNodeCount ( NumConnections num )

Definition at line 2763 of file net.cpp.

void CConnman::GetNodeStats ( std::vector< CNodeStats > & vstats )

Definition at line 2779 of file net.cpp.

uint64_t CConnman::GetOutboundTargetBytesLeft ( )

response the bytes left in the current max outbound cycle in case of no limit, it will always response 0

Definition at line 2917 of file net.cpp.

unsigned int CConnman::GetReceiveFloodSize ( ) const

Definition at line 2953 of file net.cpp.

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uint64_t CConnman::GetTotalBytesRecv ( )

Definition at line 2926 of file net.cpp.

uint64_t CConnman::GetTotalBytesSent ( )

Definition at line 2932 of file net.cpp.

bool CConnman::GetTryNewOutboundPeer ( )

Definition at line 1829 of file net.cpp.

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bool CConnman::GetUseAddrmanOutgoing ( ) const

inline

Definition at line 269 of file net.h.

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uint64_t nTotalBytesRecv CConnman::GUARDED_BY ( cs_totalBytesRecv )

inlineprivate

Definition at line 477 of file net.h.

uint64_t nTotalBytesSent CConnman::GUARDED_BY ( cs_totalBytesSent )

inlineprivate

Definition at line 478 of file net.h.

uint64_t nMaxOutboundTotalBytesSentInCycle CConnman::GUARDED_BY ( cs_totalBytesSent )

private

uint64_t nMaxOutboundCycleStartTime CConnman::GUARDED_BY ( cs_totalBytesSent )

private

uint64_t nMaxOutboundLimit CConnman::GUARDED_BY ( cs_totalBytesSent )

private

uint64_t nMaxOutboundTimeframe CConnman::GUARDED_BY ( cs_totalBytesSent )

private

std::deque<std::string> m_addr_fetches CConnman::GUARDED_BY ( m_addr_fetches_mutex )

private

std::vector<std::string> vAddedNodes CConnman::GUARDED_BY ( cs_vAddedNodes )

private

std::vector<CNode*> vNodes CConnman::GUARDED_BY ( cs_vNodes )

private

bool fMsgProcWake CConnman::GUARDED_BY ( mutexMsgProc )

private

flag for waking the message processor.

void CConnman::InactivityCheck ( CNode * pnode )

private

Definition at line 1236 of file net.cpp.

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void CConnman::Init ( const Options & connOptions )

inline

Definition at line 226 of file net.h.

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bool CConnman::InitBinds	(	const std::vector< CService > &	binds,
		const std::vector< NetWhitebindPermissions > &	whiteBinds,
		const std::vector< CService > &	onion_binds
	)

private

Definition at line 2425 of file net.cpp.

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void CConnman::Interrupt ( )

Definition at line 2577 of file net.cpp.

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void CConnman::MarkAddressGood ( const CAddress & addr )

Definition at line 2676 of file net.cpp.

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bool CConnman::NodeFullyConnected ( const CNode * pnode )

staticprivate

Definition at line 3000 of file net.cpp.

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void CConnman::NotifyNumConnectionsChanged ( )

private

Definition at line 1222 of file net.cpp.

void CConnman::OpenNetworkConnection	(	const CAddress &	addrConnect,
		bool	fCountFailure,
		CSemaphoreGrant *	grantOutbound,
		const char *	strDest,
		ConnectionType	conn_type
	)

Definition at line 2179 of file net.cpp.

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bool CConnman::OutboundTargetReached ( bool historicalBlockServingLimit )

check if the outbound target is reached if param historicalBlockServingLimit is set true, the function will response true if the limit for serving historical blocks has been reached

Definition at line 2897 of file net.cpp.

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int64_t CConnman::PoissonNextSendInbound	(	int64_t	now,
		int	average_interval_seconds
	)

Attempts to obfuscate tx time through exponentially distributed emitting.

Works assuming that a single interval is used. Variable intervals will result in privacy decrease.

Definition at line 3051 of file net.cpp.

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void CConnman::ProcessAddrFetch ( )

private

Definition at line 1812 of file net.cpp.

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void CConnman::PushMessage	(	CNode *	pnode,
		CSerializedNetMsg &&	msg
	)

Definition at line 3005 of file net.cpp.

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void CConnman::RecordBytesRecv ( uint64_t bytes )

private

Definition at line 2830 of file net.cpp.

void CConnman::RecordBytesSent ( uint64_t bytes )

private

Definition at line 2836 of file net.cpp.

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bool CConnman::RemoveAddedNode ( const std::string & node )

Definition at line 2751 of file net.cpp.

void CConnman::SetAsmap ( std::vector< bool > asmap )

inline

Definition at line 404 of file net.h.

void CConnman::SetBestHeight ( int height )

Definition at line 2943 of file net.cpp.

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void CConnman::SetMaxOutboundTarget ( uint64_t limit )

set the max outbound target in bytes

Definition at line 2853 of file net.cpp.

void CConnman::SetMaxOutboundTimeframe ( uint64_t timeframe )

set the timeframe for the max outbound target

Definition at line 2885 of file net.cpp.

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void CConnman::SetNetworkActive ( bool active )

Definition at line 2378 of file net.cpp.

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void CConnman::SetServices	(	const CService &	addr,
		ServiceFlags	nServices
	)

Definition at line 2671 of file net.cpp.

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void CConnman::SetTryNewOutboundPeer ( bool flag )

Definition at line 1834 of file net.cpp.

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void CConnman::SocketEvents	(	std::set< SOCKET > &	recv_set,
		std::set< SOCKET > &	send_set,
		std::set< SOCKET > &	error_set
	)

private

Definition at line 1358 of file net.cpp.

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void CConnman::SocketHandler ( )

private

Definition at line 1433 of file net.cpp.

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size_t CConnman::SocketSendData ( CNode * pnode ) const

private

Definition at line 808 of file net.cpp.

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bool CConnman::Start	(	CScheduler &	scheduler,
		const Options &	options
	)

Definition at line 2452 of file net.cpp.

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void CConnman::Stop ( )

inline

Definition at line 261 of file net.h.

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void CConnman::StopNodes ( )

Definition at line 2615 of file net.cpp.

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void CConnman::StopThreads ( )

Definition at line 2601 of file net.cpp.

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void CConnman::ThreadDNSAddressSeed ( )

private

Definition at line 1691 of file net.cpp.

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void CConnman::ThreadMessageHandler ( )

private

Definition at line 2214 of file net.cpp.

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void CConnman::ThreadOpenAddedConnections ( )

private

Definition at line 2151 of file net.cpp.

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void CConnman::ThreadOpenConnections ( std::vector< std::string > connect )

private

Definition at line 1860 of file net.cpp.

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void CConnman::ThreadSocketHandler ( )

private

Definition at line 1557 of file net.cpp.

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void CConnman::WakeMessageHandler ( )

Definition at line 1567 of file net.cpp.

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Friends And Related Function Documentation

friend struct CConnmanTest

friend

Definition at line 609 of file net.h.

friend struct ConnmanTestMsg

friend

Definition at line 610 of file net.h.

Member Data Documentation

CAddrMan CConnman::addrman

private

Definition at line 499 of file net.h.

CClientUIInterface* CConnman::clientInterface

private

Definition at line 567 of file net.h.

std::condition_variable CConnman::condMsgProc

private

Definition at line 584 of file net.h.

RecursiveMutex CConnman::cs_totalBytesRecv

private

Definition at line 475 of file net.h.

RecursiveMutex CConnman::cs_totalBytesSent

private

Definition at line 476 of file net.h.

RecursiveMutex CConnman::cs_vAddedNodes

private

Definition at line 503 of file net.h.

RecursiveMutex CConnman::cs_vNodes

mutableprivate

Definition at line 506 of file net.h.

bool CConnman::fAddressesInitialized {false}

private

Definition at line 498 of file net.h.

std::atomic<bool> CConnman::flagInterruptMsgProc {false}

private

Definition at line 586 of file net.h.

std::atomic<bool> CConnman::fNetworkActive {true}

private

Definition at line 497 of file net.h.

CThreadInterrupt CConnman::interruptNet

private

Definition at line 588 of file net.h.

RecursiveMutex CConnman::m_addr_fetches_mutex

private

Definition at line 501 of file net.h.

std::map<uint64_t, CachedAddrResponse> CConnman::m_addr_response_caches

private

Addr responses stored in different caches per (network, local socket) prevent cross-network node identification.

If a node for example is multi-homed under Tor and IPv6, a single cache (or no cache at all) would let an attacker to easily detect that it is the same node by comparing responses. Indexing by local socket prevents leakage when a node has multiple listening addresses on the same network.

The used memory equals to 1000 CAddress records (or around 40 bytes) per distinct Network (up to 5) we have/had an inbound peer from, resulting in at most ~196 KB. Every separate local socket may add up to ~196 KB extra.

Definition at line 535 of file net.h.

std::vector<CAddress> CConnman::m_anchors

private

Addresses that were saved during the previous clean shutdown.

We'll attempt to make block-relay-only connections to them.

Definition at line 576 of file net.h.

BanMan* CConnman::m_banman

private

Pointer to this node's banman.

May be nullptr - check existence before dereferencing.

Definition at line 570 of file net.h.

int CConnman::m_max_outbound

private

Definition at line 564 of file net.h.

int CConnman::m_max_outbound_block_relay

private

Definition at line 560 of file net.h.

int CConnman::m_max_outbound_full_relay

private

Definition at line 556 of file net.h.

NetEventsInterface* CConnman::m_msgproc

private

Definition at line 568 of file net.h.

std::atomic<int64_t> CConnman::m_next_send_inv_to_incoming {0}

private

Definition at line 601 of file net.h.

std::vector<CService> CConnman::m_onion_binds

private

A vector of -bind=<address>:<port>=onion arguments each of which is an address and port that are designated for incoming Tor connections.

Definition at line 607 of file net.h.

int64_t CConnman::m_peer_connect_timeout

private

Definition at line 487 of file net.h.

std::atomic_bool CConnman::m_try_another_outbound_peer

private

flag for deciding to connect to an extra outbound peer, in excess of m_max_outbound_full_relay This takes the place of a feeler connection

Definition at line 599 of file net.h.

bool CConnman::m_use_addrman_outgoing

private

Definition at line 565 of file net.h.

Mutex CConnman::mutexMsgProc

private

Definition at line 585 of file net.h.

std::atomic<int> CConnman::nBestHeight

private

Definition at line 566 of file net.h.

std::atomic<NodeId> CConnman::nLastNodeId {0}

private

Definition at line 507 of file net.h.

ServiceFlags CConnman::nLocalServices

private

Services this instance offers.

This data is replicated in each CNode instance we create during peer connection (in ConnectNode()) under a member also called nLocalServices.

This data is not marked const, but after being set it should not change. See the note in CNode::nLocalServices documentation.

See Also: CNode::nLocalServices

Definition at line 549 of file net.h.

int CConnman::nMaxAddnode

private

Definition at line 562 of file net.h.

int CConnman::nMaxConnections

private

Definition at line 553 of file net.h.

int CConnman::nMaxFeeler

private

Definition at line 563 of file net.h.

unsigned int CConnman::nPrevNodeCount {0}

private

Definition at line 508 of file net.h.

unsigned int CConnman::nReceiveFloodSize {0}

private

Definition at line 494 of file net.h.

const uint64_t CConnman::nSeed0

private

SipHasher seeds for deterministic randomness.

Definition at line 579 of file net.h.

const uint64_t CConnman::nSeed1

private

Definition at line 579 of file net.h.

unsigned int CConnman::nSendBufferMaxSize {0}

private

Definition at line 493 of file net.h.

std::unique_ptr<CSemaphore> CConnman::semAddnode

private

Definition at line 552 of file net.h.

std::unique_ptr<CSemaphore> CConnman::semOutbound

private

Definition at line 551 of file net.h.

std::thread CConnman::threadDNSAddressSeed

private

Definition at line 590 of file net.h.

std::thread CConnman::threadMessageHandler

private

Definition at line 594 of file net.h.

std::thread CConnman::threadOpenAddedConnections

private

Definition at line 592 of file net.h.

std::thread CConnman::threadOpenConnections

private

Definition at line 593 of file net.h.

std::thread CConnman::threadSocketHandler

private

Definition at line 591 of file net.h.

std::vector<ListenSocket> CConnman::vhListenSocket

private

Definition at line 496 of file net.h.

std::list<CNode*> CConnman::vNodesDisconnected

private

Definition at line 505 of file net.h.

std::vector<NetWhitelistPermissions> CConnman::vWhitelistedRange

private

Definition at line 491 of file net.h.

The documentation for this class was generated from the following files:

src/net.h
src/net.cpp

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