#include <net.h>
#include <banman.h>
#include <chainparams.h>
#include <clientversion.h>
#include <consensus/consensus.h>
#include <crypto/sha256.h>
#include <netbase.h>
#include <net_permissions.h>
#include <random.h>
#include <scheduler.h>
#include <ui_interface.h>
#include <util/strencodings.h>
#include <util/translation.h>
#include <fcntl.h>
#include <unordered_map>
#include <math.h>

Include dependency graph for net.cpp:

Classes
struct	NodeEvictionCandidate

class	CNetCleanup

Macros
#define	FEELER_SLEEP_WINDOW 1

#define	MSG_NOSIGNAL 0

#define	MSG_DONTWAIT 0

#define	X(name) stats.name = name

Enumerations
enum	BindFlags { BF_NONE = 0, BF_EXPLICIT = (1U << 0), BF_REPORT_ERROR = (1U << 1) }
	Used to pass flags to the Bind() function. More...

Functions
std::map< CNetAddr, LocalServiceInfo > mapLocalHost	GUARDED_BY (cs_mapLocalHost)

unsigned short	GetListenPort ()

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

static std::vector< CAddress >	convertSeed6 (const std::vector< SeedSpec6 > &vSeedsIn)
	Convert the pnSeed6 array into usable address objects. More...

CAddress	GetLocalAddress (const CNetAddr *paddrPeer, ServiceFlags nLocalServices)

static int	GetnScore (const CService &addr)

bool	IsPeerAddrLocalGood (CNode *pnode)

void	AdvertiseLocal (CNode *pnode)

bool	AddLocal (const CService &addr, int nScore)

bool	AddLocal (const CNetAddr &addr, int nScore)

void	RemoveLocal (const CService &addr)

void	SetReachable (enum Network net, bool reachable)
	Mark a network as reachable or unreachable (no automatic connects to it) More...

bool	IsReachable (enum Network net)

bool	IsReachable (const CNetAddr &addr)

bool	SeenLocal (const CService &addr)
	vote for a local address More...

bool	IsLocal (const CService &addr)
	check whether a given address is potentially local More...

static CAddress	GetBindAddress (SOCKET sock)
	Get the bind address for a socket as CAddress. More...

static bool	ReverseCompareNodeMinPingTime (const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)

static bool	ReverseCompareNodeTimeConnected (const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)

static bool	CompareNetGroupKeyed (const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)

static bool	CompareNodeBlockTime (const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)

static bool	CompareNodeTXTime (const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)

template<typename T , typename Comparator >
static void	EraseLastKElements (std::vector< T > &elements, Comparator comparator, size_t k)
	Sort an array by the specified comparator, then erase the last K elements. More...

void	StartMapPort ()

void	InterruptMapPort ()

void	StopMapPort ()

void	Discover ()

int64_t	PoissonNextSend (int64_t now, int average_interval_seconds)
	Return a timestamp in the future (in microseconds) for exponentially distributed events. More...

Variables
static constexpr int	DUMP_PEERS_INTERVAL = 15 * 60

static constexpr int	DNSSEEDS_TO_QUERY_AT_ONCE = 3
	Number of DNS seeds to query when the number of connections is low. More...

static const uint64_t	SELECT_TIMEOUT_MILLISECONDS = 50

const std::string	NET_MESSAGE_COMMAND_OTHER = "other"

static const uint64_t	RANDOMIZER_ID_NETGROUP = 0x6c0edd8036ef4036ULL

static const uint64_t	RANDOMIZER_ID_LOCALHOSTNONCE = 0xd93e69e2bbfa5735ULL

bool	fDiscover = true

bool	fListen = true

bool	g_relay_txes = !DEFAULT_BLOCKSONLY

RecursiveMutex	cs_mapLocalHost

std::string	strSubVersion
	Subversion as sent to the P2P network in `version` messages. More...

static CNetCleanup	instance_of_cnetcleanup

Macro Definition Documentation

◆ FEELER_SLEEP_WINDOW

#define FEELER_SLEEP_WINDOW 1

Definition at line 55 of file net.cpp.

◆ MSG_DONTWAIT

#define MSG_DONTWAIT 0

Definition at line 64 of file net.cpp.

◆ MSG_NOSIGNAL

#define MSG_NOSIGNAL 0

Definition at line 59 of file net.cpp.

◆ X

#define X ( name ) stats.name = name

Definition at line 500 of file net.cpp.

Enumeration Type Documentation

◆ BindFlags

enum BindFlags

Used to pass flags to the Bind() function.

Enumerator
BF_NONE
BF_EXPLICIT
BF_REPORT_ERROR

Definition at line 68 of file net.cpp.

Function Documentation

◆ AddLocal() [1/2]

bool AddLocal	(	const CService &	addr,
		int	nScore
	)

Definition at line 209 of file net.cpp.

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◆ AddLocal() [2/2]

bool AddLocal	(	const CNetAddr &	addr,
		int	nScore
	)

Definition at line 235 of file net.cpp.

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◆ AdvertiseLocal()

void AdvertiseLocal ( CNode * pnode )

Definition at line 182 of file net.cpp.

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◆ CompareNetGroupKeyed()

static bool CompareNetGroupKeyed	(	const NodeEvictionCandidate &	a,
		const NodeEvictionCandidate &	b
	)

static

Definition at line 798 of file net.cpp.

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◆ CompareNodeBlockTime()

static bool CompareNodeBlockTime	(	const NodeEvictionCandidate &	a,
		const NodeEvictionCandidate &	b
	)

static

Definition at line 802 of file net.cpp.

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◆ CompareNodeTXTime()

static bool CompareNodeTXTime	(	const NodeEvictionCandidate &	a,
		const NodeEvictionCandidate &	b
	)

static

Definition at line 810 of file net.cpp.

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◆ convertSeed6()

static std::vector<CAddress> convertSeed6 ( const std::vector< SeedSpec6 > & vSeedsIn )

static

Convert the pnSeed6 array into usable address objects.

Definition at line 130 of file net.cpp.

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◆ Discover()

void Discover ( )

Definition at line 2127 of file net.cpp.

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◆ EraseLastKElements()

template<typename T , typename Comparator >

static void EraseLastKElements	(	std::vector< T > &	elements,
		Comparator	comparator,
		size_t	k
	)

static

Sort an array by the specified comparator, then erase the last K elements.

Definition at line 822 of file net.cpp.

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◆ GetBindAddress()

static CAddress GetBindAddress ( SOCKET sock )

static

Get the bind address for a socket as CAddress.

Definition at line 341 of file net.cpp.

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◆ GetListenPort()

unsigned short GetListenPort ( )

Definition at line 99 of file net.cpp.

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◆ GetLocal()

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

Definition at line 105 of file net.cpp.

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◆ GetLocalAddress()

CAddress GetLocalAddress	(	const CNetAddr *	paddrPeer,
		ServiceFlags	nLocalServices
	)

Definition at line 154 of file net.cpp.

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◆ GetnScore()

static int GetnScore ( const CService & addr )

static

Definition at line 166 of file net.cpp.

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◆ GUARDED_BY()

std::map<CNetAddr, LocalServiceInfo> mapLocalHost GUARDED_BY ( cs_mapLocalHost )

◆ InterruptMapPort()

void InterruptMapPort ( )

Definition at line 1550 of file net.cpp.

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◆ IsLocal()

bool IsLocal ( const CService & addr )

check whether a given address is potentially local

Definition at line 280 of file net.cpp.

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◆ IsPeerAddrLocalGood()

bool IsPeerAddrLocalGood ( CNode * pnode )

Definition at line 174 of file net.cpp.

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◆ IsReachable() [1/2]

bool IsReachable ( enum Network net )

Returns: true if the network is reachable, false otherwise

Definition at line 255 of file net.cpp.

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◆ IsReachable() [2/2]

bool IsReachable ( const CNetAddr & addr )

Returns: true if the address is in a reachable network, false otherwise

Definition at line 261 of file net.cpp.

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◆ PoissonNextSend()

int64_t PoissonNextSend	(	int64_t	now,
		int	average_interval_seconds
	)

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

Definition at line 2781 of file net.cpp.

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◆ RemoveLocal()

void RemoveLocal ( const CService & addr )

Definition at line 240 of file net.cpp.

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◆ ReverseCompareNodeMinPingTime()

static bool ReverseCompareNodeMinPingTime	(	const NodeEvictionCandidate &	a,
		const NodeEvictionCandidate &	b
	)

static

Definition at line 788 of file net.cpp.

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◆ ReverseCompareNodeTimeConnected()

static bool ReverseCompareNodeTimeConnected	(	const NodeEvictionCandidate &	a,
		const NodeEvictionCandidate &	b
	)

static

Definition at line 793 of file net.cpp.

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◆ SeenLocal()

bool SeenLocal ( const CService & addr )

vote for a local address

Definition at line 267 of file net.cpp.

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◆ SetReachable()

void SetReachable	(	enum Network	net,
		bool	reachable
	)

Mark a network as reachable or unreachable (no automatic connects to it)

Note: Networks are reachable by default

Definition at line 247 of file net.cpp.

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◆ StartMapPort()

void StartMapPort ( )

Definition at line 1546 of file net.cpp.

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◆ StopMapPort()

void StopMapPort ( )

Definition at line 1554 of file net.cpp.

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Variable Documentation

◆ cs_mapLocalHost

RecursiveMutex cs_mapLocalHost

Definition at line 88 of file net.cpp.

◆ DNSSEEDS_TO_QUERY_AT_ONCE

constexpr int DNSSEEDS_TO_QUERY_AT_ONCE = 3

static

Number of DNS seeds to query when the number of connections is low.

Definition at line 52 of file net.cpp.

◆ DUMP_PEERS_INTERVAL

constexpr int DUMP_PEERS_INTERVAL = 15 * 60

static

Definition at line 49 of file net.cpp.

◆ fDiscover

bool fDiscover = true

Definition at line 85 of file net.cpp.

◆ fListen

bool fListen = true

Definition at line 86 of file net.cpp.

◆ g_relay_txes

bool g_relay_txes = !DEFAULT_BLOCKSONLY

Definition at line 87 of file net.cpp.

◆ instance_of_cnetcleanup

CNetCleanup instance_of_cnetcleanup

static

Definition at line 2351 of file net.cpp.

◆ NET_MESSAGE_COMMAND_OTHER

const std::string NET_MESSAGE_COMMAND_OTHER = "*other*"

Definition at line 78 of file net.cpp.

◆ RANDOMIZER_ID_LOCALHOSTNONCE

const uint64_t RANDOMIZER_ID_LOCALHOSTNONCE = 0xd93e69e2bbfa5735ULL

static

Definition at line 81 of file net.cpp.

◆ RANDOMIZER_ID_NETGROUP

const uint64_t RANDOMIZER_ID_NETGROUP = 0x6c0edd8036ef4036ULL

static

Definition at line 80 of file net.cpp.

◆ SELECT_TIMEOUT_MILLISECONDS

const uint64_t SELECT_TIMEOUT_MILLISECONDS = 50

static

Definition at line 76 of file net.cpp.

◆ strSubVersion

std::string strSubVersion

Subversion as sent to the P2P network in version messages.

Definition at line 91 of file net.cpp.

Classes

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ FEELER_SLEEP_WINDOW

◆ MSG_DONTWAIT

◆ MSG_NOSIGNAL

◆ X

Enumeration Type Documentation

◆ BindFlags

Function Documentation

◆ AddLocal() [1/2]

◆ AddLocal() [2/2]

◆ AdvertiseLocal()

◆ CompareNetGroupKeyed()

◆ CompareNodeBlockTime()

◆ CompareNodeTXTime()

◆ convertSeed6()

◆ Discover()

◆ EraseLastKElements()

◆ GetBindAddress()

◆ GetListenPort()

◆ GetLocal()

◆ GetLocalAddress()

◆ GetnScore()

◆ GUARDED_BY()

◆ InterruptMapPort()

◆ IsLocal()

◆ IsPeerAddrLocalGood()

◆ IsReachable() [1/2]

◆ IsReachable() [2/2]

◆ PoissonNextSend()

◆ RemoveLocal()

◆ ReverseCompareNodeMinPingTime()

◆ ReverseCompareNodeTimeConnected()

◆ SeenLocal()

◆ SetReachable()

◆ StartMapPort()

◆ StopMapPort()

Variable Documentation

◆ cs_mapLocalHost

◆ DNSSEEDS_TO_QUERY_AT_ONCE

◆ DUMP_PEERS_INTERVAL

◆ fDiscover

◆ fListen

◆ g_relay_txes

◆ instance_of_cnetcleanup

◆ NET_MESSAGE_COMMAND_OTHER

◆ RANDOMIZER_ID_LOCALHOSTNONCE

◆ RANDOMIZER_ID_NETGROUP

◆ SELECT_TIMEOUT_MILLISECONDS

◆ strSubVersion