CConnman Class Reference

#include <net.h>

Collaboration diagram for CConnman:

Classes
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) }

Public Member Functions
void	Init (const Options &connOptions)
	CConnman (uint64_t seed0, uint64_t seed1)
	~CConnman ()
bool	Start (CScheduler &scheduler, const Options &options)
void	Stop ()
void	Interrupt ()
bool	GetNetworkActive () const
void	SetNetworkActive (bool active)
bool	OpenNetworkConnection (const CAddress &addrConnect, bool fCountFailure, CSemaphoreGrant *grantOutbound=nullptr, const char *strDest=nullptr, bool fOneShot=false, bool fFeeler=false, bool manual_connection=false)
bool	CheckIncomingNonce (uint64_t nonce)
bool	ForNode (NodeId id, std::function< bool(CNode *pnode)> func)
void	PushMessage (CNode *pnode, CSerializedNetMsg &&msg)
template<typename Callable >
void	ForEachNode (Callable &&func)
template<typename Callable >
void	ForEachNode (Callable &&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
size_t	GetAddressCount () const
void	SetServices (const CService &addr, ServiceFlags nServices)
void	MarkAddressGood (const CAddress &addr)
void	AddNewAddresses (const std::vector< CAddress > &vAddr, const CAddress &addrFrom, int64_t nTimePenalty=0)
std::vector< CAddress >	GetAddresses ()
void	Ban (const CNetAddr &netAddr, const BanReason &reason, int64_t bantimeoffset=0, bool sinceUnixEpoch=false)
void	Ban (const CSubNet &subNet, const BanReason &reason, int64_t bantimeoffset=0, bool sinceUnixEpoch=false)
void	ClearBanned ()
bool	IsBanned (CNetAddr ip)
bool	IsBanned (CSubNet subnet)
bool	Unban (const CNetAddr &ip)
bool	Unban (const CSubNet &ip)
void	GetBanned (banmap_t &banmap)
void	SetBanned (const banmap_t &banmap)
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 (NodeId id)
ServiceFlags	GetLocalServices () const
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 More...
uint64_t	GetOutboundTargetBytesLeft ()
	response the bytes left in the current max outbound cycle More...
uint64_t	GetMaxOutboundTimeLeftInCycle ()
	response the time in second left in the current max outbound cycle 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 ()

Private Member Functions
bool	BindListenPort (const CService &bindAddr, std::string &strError, bool fWhitelisted=false)
bool	Bind (const CService &addr, unsigned int flags)
bool	InitBinds (const std::vector< CService > &binds, const std::vector< CService > &whiteBinds)
void	ThreadOpenAddedConnections ()
void	AddOneShot (const std::string &strDest)
void	ProcessOneShot ()
void	ThreadOpenConnections ()
void	ThreadMessageHandler ()
void	AcceptConnection (const ListenSocket &hListenSocket)
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	AttemptToEvictConnection ()
	Try to find a connection to evict when the node is full. More...
CNode *	ConnectNode (CAddress addrConnect, const char *pszDest, bool fCountFailure)
bool	IsWhitelistedRange (const CNetAddr &addr)
void	DeleteNode (CNode *pnode)
NodeId	GetNewNodeId ()
size_t	SocketSendData (CNode *pnode) const
bool	BannedSetIsDirty ()
	check is the banlist has unwritten changes More...
void	SetBannedSetDirty (bool dirty=true)
	set the "dirty" flag for the banlist More...
void	SweepBanned ()
	clean unused entries (if bantime has expired) More...
void	DumpAddresses ()
void	DumpData ()
void	DumpBanlist ()
void	RecordBytesRecv (uint64_t bytes)
void	RecordBytesSent (uint64_t bytes)

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

Private Attributes
CCriticalSection	cs_totalBytesRecv
CCriticalSection	cs_totalBytesSent
uint64_t	nTotalBytesRecv
uint64_t	nTotalBytesSent
uint64_t	nMaxOutboundTotalBytesSentInCycle
uint64_t	nMaxOutboundCycleStartTime
uint64_t	nMaxOutboundLimit
uint64_t	nMaxOutboundTimeframe
std::vector< CSubNet >	vWhitelistedRange
unsigned int	nSendBufferMaxSize
unsigned int	nReceiveFloodSize
std::vector< ListenSocket >	vhListenSocket
std::atomic< bool >	fNetworkActive
banmap_t	setBanned
CCriticalSection	cs_setBanned
bool	setBannedIsDirty
bool	fAddressesInitialized
CAddrMan	addrman
std::deque< std::string >	vOneShots
CCriticalSection	cs_vOneShots
std::vector< std::string >	vAddedNodes
CCriticalSection	cs_vAddedNodes
std::vector< CNode * >	vNodes
std::list< CNode * >	vNodesDisconnected
CCriticalSection	cs_vNodes
std::atomic< NodeId >	nLastNodeId
ServiceFlags	nLocalServices
	Services this instance offers. More...
ServiceFlags	nRelevantServices
	Services this instance cares about. More...
CSemaphore *	semOutbound
CSemaphore *	semAddnode
int	nMaxConnections
int	nMaxOutbound
int	nMaxAddnode
int	nMaxFeeler
std::atomic< int >	nBestHeight
CClientUIInterface *	clientInterface
NetEventsInterface *	m_msgproc
const uint64_t	nSeed0
	SipHasher seeds for deterministic randomness. More...
const uint64_t	nSeed1
bool	fMsgProcWake
	flag for waking the message processor. More...
std::condition_variable	condMsgProc
std::mutex	mutexMsgProc
std::atomic< bool >	flagInterruptMsgProc
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 nMaxOutbound This takes the place of a feeler connection More...

Friends
struct	CConnmanTest

Detailed Description

Definition at line 120 of file net.h.

Member Enumeration Documentation

enum CConnman::NumConnections

Enumerator
CONNECTIONS_NONE
CONNECTIONS_IN
CONNECTIONS_OUT
CONNECTIONS_ALL

Definition at line 124 of file net.h.

Constructor & Destructor Documentation

CConnman::CConnman	(	uint64_t	seed0,
		uint64_t	seed1
	)

Definition at line 2232 of file net.cpp.

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CConnman::~CConnman

(

)

Definition at line 2484 of file net.cpp.

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Member Function Documentation

void CConnman::AcceptConnection ( const ListenSocket &  hListenSocket )

private

Definition at line 1043 of file net.cpp.

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

Definition at line 2505 of file net.cpp.

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bool CConnman::AddNode

(

const std::string &

node

)

Definition at line 2515 of file net.cpp.

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

private

Definition at line 92 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 950 of file net.cpp.

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void CConnman::Ban	(	const CNetAddr &	netAddr,
		const BanReason &	reason,
		int64_t	bantimeoffset = 0,
		bool	sinceUnixEpoch = false
	)

Definition at line 503 of file net.cpp.

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void CConnman::Ban	(	const CSubNet &	subNet,
		const BanReason &	reason,
		int64_t	bantimeoffset = 0,
		bool	sinceUnixEpoch = false
	)

Definition at line 508 of file net.cpp.

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bool CConnman::BannedSetIsDirty ( )

private

check is the banlist has unwritten changes

Definition at line 594 of file net.cpp.

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

private

Definition at line 2255 of file net.cpp.

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

private

Definition at line 2061 of file net.cpp.

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

private

Definition at line 2892 of file net.cpp.

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bool CConnman::CheckIncomingNonce

(

uint64_t

nonce

)

Definition at line 337 of file net.cpp.

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void CConnman::ClearBanned

(

)

Definition at line 462 of file net.cpp.

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

private

debug print

Definition at line 363 of file net.cpp.

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void CConnman::DeleteNode ( CNode *  pnode )

private

Definition at line 2473 of file net.cpp.

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bool CConnman::DisconnectNode

(

const std::string &

node

)

Definition at line 2565 of file net.cpp.

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bool CConnman::DisconnectNode

(

NodeId

id

)

Definition at line 2574 of file net.cpp.

void CConnman::DumpAddresses ( )

private

Definition at line 1639 of file net.cpp.

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void CConnman::DumpBanlist ( )

private

Definition at line 431 of file net.cpp.

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void CConnman::DumpData ( )

private

Definition at line 1650 of file net.cpp.

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

private

Definition at line 299 of file net.cpp.

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

private

Definition at line 308 of file net.cpp.

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

private

Definition at line 317 of file net.cpp.

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

private

Definition at line 328 of file net.cpp.

template<typename Callable >

void CConnman::ForEachNode ( Callable &&  func )

inline

Definition at line 183 of file net.h.

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template<typename Callable >

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

inline

Definition at line 193 of file net.h.

template<typename Callable , typename CallableAfter >

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

inline

Definition at line 203 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 214 of file net.h.

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

Definition at line 2870 of file net.cpp.

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std::vector< AddedNodeInfo > CConnman::GetAddedNodeInfo

(

)

Definition at line 1878 of file net.cpp.

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size_t CConnman::GetAddressCount

(

)

const

Definition at line 2490 of file net.cpp.

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std::vector< CAddress > CConnman::GetAddresses

(

)

Definition at line 2510 of file net.cpp.

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void CConnman::GetBanned

(

banmap_t &

banmap

)

Definition at line 558 of file net.cpp.

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int CConnman::GetBestHeight

(

)

const

Definition at line 2706 of file net.cpp.

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CSipHasher CConnman::GetDeterministicRandomizer

(

uint64_t

id

)

const

Get a unique deterministic randomizer.

Definition at line 2887 of file net.cpp.

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int CConnman::GetExtraOutboundCount

(

)

Definition at line 1691 of file net.cpp.

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ServiceFlags CConnman::GetLocalServices

(

)

const

Definition at line 2696 of file net.cpp.

uint64_t CConnman::GetMaxOutboundTarget

(

)

Definition at line 2615 of file net.cpp.

uint64_t CConnman::GetMaxOutboundTimeframe

(

)

Definition at line 2621 of file net.cpp.

uint64_t CConnman::GetMaxOutboundTimeLeftInCycle

(

)

response the time in second left in the current max outbound cycle

Definition at line 2627 of file net.cpp.

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bool CConnman::GetNetworkActive ( ) const

inline

Definition at line 173 of file net.h.

NodeId CConnman::GetNewNodeId ( )

private

Definition at line 2249 of file net.cpp.

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size_t CConnman::GetNodeCount

(

NumConnections

num

)

Definition at line 2539 of file net.cpp.

void CConnman::GetNodeStats

(

std::vector< CNodeStats > &

vstats

)

Definition at line 2553 of file net.cpp.

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uint64_t CConnman::GetOutboundTargetBytesLeft

(

)

response the bytes left in the current max outbound cycle

Definition at line 2675 of file net.cpp.

unsigned int CConnman::GetReceiveFloodSize

(

)

const

Definition at line 2711 of file net.cpp.

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uint64_t CConnman::GetTotalBytesRecv

(

)

Definition at line 2684 of file net.cpp.

uint64_t CConnman::GetTotalBytesSent

(

)

Definition at line 2690 of file net.cpp.

bool CConnman::GetTryNewOutboundPeer

(

)

Definition at line 1674 of file net.cpp.

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void CConnman::Init ( const Options &  connOptions )

inline

Definition at line 151 of file net.h.

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

private

Definition at line 2268 of file net.cpp.

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void CConnman::Interrupt

(

)

Definition at line 2406 of file net.cpp.

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bool CConnman::IsBanned

(

CNetAddr

ip

)

Definition at line 474 of file net.cpp.

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bool CConnman::IsBanned

(

CSubNet

subnet

)

Definition at line 489 of file net.cpp.

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bool CConnman::IsWhitelistedRange ( const CNetAddr &  addr )

private

Definition at line 607 of file net.cpp.

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void CConnman::MarkAddressGood

(

const CAddress &

addr

)

Definition at line 2500 of file net.cpp.

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bool CConnman::NodeFullyConnected ( const CNode *  pnode )

staticprivate

Definition at line 2828 of file net.cpp.

bool CConnman::OpenNetworkConnection	(	const CAddress &	addrConnect,
		bool	fCountFailure,
		CSemaphoreGrant *	grantOutbound = nullptr,
		const char *	strDest = nullptr,
		bool	fOneShot = false,
		bool	fFeeler = false,
		bool	manual_connection = false
	)

Definition at line 1966 of file net.cpp.

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bool CConnman::OutboundTargetReached

(

bool

historicalBlockServingLimit

)

check if the outbound target is reached

Definition at line 2653 of file net.cpp.

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void CConnman::ProcessOneShot ( )

private

Definition at line 1656 of file net.cpp.

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

Definition at line 2833 of file net.cpp.

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void CConnman::RecordBytesRecv ( uint64_t  bytes )

private

Definition at line 2586 of file net.cpp.

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void CConnman::RecordBytesSent ( uint64_t  bytes )

private

Definition at line 2592 of file net.cpp.

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bool CConnman::RemoveAddedNode

(

const std::string &

node

)

Definition at line 2527 of file net.cpp.

void CConnman::SetBanned

(

const banmap_t &

banmap

)

Definition at line 566 of file net.cpp.

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void CConnman::SetBannedSetDirty ( bool  dirty = true )

private

set the "dirty" flag for the banlist

Definition at line 600 of file net.cpp.

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void CConnman::SetBestHeight

(

int

height

)

Definition at line 2701 of file net.cpp.

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void CConnman::SetMaxOutboundTarget

(

uint64_t

limit

)

set the max outbound target in bytes

Definition at line 2609 of file net.cpp.

void CConnman::SetMaxOutboundTimeframe

(

uint64_t

timeframe

)

set the timeframe for the max outbound target

Definition at line 2641 of file net.cpp.

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void CConnman::SetNetworkActive

(

bool

active

)

Definition at line 2211 of file net.cpp.

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

Definition at line 2495 of file net.cpp.

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void CConnman::SetTryNewOutboundPeer

(

bool

flag

)

Definition at line 1679 of file net.cpp.

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size_t CConnman::SocketSendData ( CNode *  pnode ) const

private

Definition at line 845 of file net.cpp.

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

Definition at line 2285 of file net.cpp.

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void CConnman::Stop

(

)

Definition at line 2430 of file net.cpp.

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void CConnman::SweepBanned ( )

private

clean unused entries (if bantime has expired)

Definition at line 573 of file net.cpp.

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void CConnman::ThreadDNSAddressSeed ( )

private

Definition at line 1568 of file net.cpp.

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void CConnman::ThreadMessageHandler ( )

private

Definition at line 2007 of file net.cpp.

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void CConnman::ThreadOpenAddedConnections ( )

private

Definition at line 1931 of file net.cpp.

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void CConnman::ThreadOpenConnections ( )

private

Definition at line 1705 of file net.cpp.

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void CConnman::ThreadSocketHandler ( )

private

Definition at line 1124 of file net.cpp.

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bool CConnman::Unban

(

const CNetAddr &

ip

)

Definition at line 540 of file net.cpp.

bool CConnman::Unban

(

const CSubNet &

ip

)

Definition at line 545 of file net.cpp.

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void CConnman::WakeMessageHandler

(

)

Definition at line 1420 of file net.cpp.

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Friends And Related Function Documentation

friend struct CConnmanTest

friend

Definition at line 439 of file net.h.

Member Data Documentation

CAddrMan CConnman::addrman

private

Definition at line 390 of file net.h.

CClientUIInterface* CConnman::clientInterface

private

Definition at line 413 of file net.h.

std::condition_variable CConnman::condMsgProc

private

Definition at line 422 of file net.h.

CCriticalSection CConnman::cs_setBanned

private

Definition at line 387 of file net.h.

CCriticalSection CConnman::cs_totalBytesRecv

private

Definition at line 366 of file net.h.

CCriticalSection CConnman::cs_totalBytesSent

private

Definition at line 367 of file net.h.

CCriticalSection CConnman::cs_vAddedNodes

private

Definition at line 394 of file net.h.

CCriticalSection CConnman::cs_vNodes

mutableprivate

Definition at line 397 of file net.h.

CCriticalSection CConnman::cs_vOneShots

private

Definition at line 392 of file net.h.

bool CConnman::fAddressesInitialized

private

Definition at line 389 of file net.h.

std::atomic<bool> CConnman::flagInterruptMsgProc

private

Definition at line 424 of file net.h.

bool CConnman::fMsgProcWake

private

flag for waking the message processor.

Definition at line 420 of file net.h.

std::atomic<bool> CConnman::fNetworkActive

private

Definition at line 385 of file net.h.

CThreadInterrupt CConnman::interruptNet

private

Definition at line 426 of file net.h.

NetEventsInterface* CConnman::m_msgproc

private

Definition at line 414 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 nMaxOutbound This takes the place of a feeler connection

Definition at line 437 of file net.h.

std::mutex CConnman::mutexMsgProc

private

Definition at line 423 of file net.h.

std::atomic<int> CConnman::nBestHeight

private

Definition at line 412 of file net.h.

std::atomic<NodeId> CConnman::nLastNodeId

private

Definition at line 398 of file net.h.

ServiceFlags CConnman::nLocalServices

private

Services this instance offers.

Definition at line 401 of file net.h.

int CConnman::nMaxAddnode

private

Definition at line 410 of file net.h.

int CConnman::nMaxConnections

private

Definition at line 408 of file net.h.

int CConnman::nMaxFeeler

private

Definition at line 411 of file net.h.

int CConnman::nMaxOutbound

private

Definition at line 409 of file net.h.

uint64_t CConnman::nMaxOutboundCycleStartTime

private

Definition at line 373 of file net.h.

uint64_t CConnman::nMaxOutboundLimit

private

Definition at line 374 of file net.h.

uint64_t CConnman::nMaxOutboundTimeframe

private

Definition at line 375 of file net.h.

uint64_t CConnman::nMaxOutboundTotalBytesSentInCycle

private

Definition at line 372 of file net.h.

unsigned int CConnman::nReceiveFloodSize

private

Definition at line 382 of file net.h.

ServiceFlags CConnman::nRelevantServices

private

Services this instance cares about.

Definition at line 404 of file net.h.

const uint64_t CConnman::nSeed0

private

SipHasher seeds for deterministic randomness.

Definition at line 417 of file net.h.

const uint64_t CConnman::nSeed1

private

Definition at line 417 of file net.h.

unsigned int CConnman::nSendBufferMaxSize

private

Definition at line 381 of file net.h.

uint64_t CConnman::nTotalBytesRecv

private

Definition at line 368 of file net.h.

uint64_t CConnman::nTotalBytesSent

private

Definition at line 369 of file net.h.

CSemaphore* CConnman::semAddnode

private

Definition at line 407 of file net.h.

CSemaphore* CConnman::semOutbound

private

Definition at line 406 of file net.h.

banmap_t CConnman::setBanned

private

Definition at line 386 of file net.h.

bool CConnman::setBannedIsDirty

private

Definition at line 388 of file net.h.

std::thread CConnman::threadDNSAddressSeed

private

Definition at line 428 of file net.h.

std::thread CConnman::threadMessageHandler

private

Definition at line 432 of file net.h.

std::thread CConnman::threadOpenAddedConnections

private

Definition at line 430 of file net.h.

std::thread CConnman::threadOpenConnections

private

Definition at line 431 of file net.h.

std::thread CConnman::threadSocketHandler

private

Definition at line 429 of file net.h.

std::vector<std::string> CConnman::vAddedNodes

private

Definition at line 393 of file net.h.

std::vector<ListenSocket> CConnman::vhListenSocket

private

Definition at line 384 of file net.h.

std::vector<CNode*> CConnman::vNodes

private

Definition at line 395 of file net.h.

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

private

Definition at line 396 of file net.h.

std::deque<std::string> CConnman::vOneShots

private

Definition at line 391 of file net.h.

std::vector<CSubNet> CConnman::vWhitelistedRange

private

Definition at line 379 of file net.h.

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

• src/net.h
• src/net.cpp