net.cpp File Reference

#include <net.h>
#include <banman.h>
#include <chainparams.h>
#include <clientversion.h>
#include <consensus/consensus.h>
#include <crypto/common.h>
#include <crypto/sha256.h>
#include <primitives/transaction.h>
#include <netbase.h>
#include <scheduler.h>
#include <ui_interface.h>
#include <util/strencodings.h>
#include <fcntl.h>
#include <unordered_map>
#include <math.h>

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), BF_WHITELIST = (1U << 2) }

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)
bool	IsReachable (enum Network net)
bool	IsReachable (const CNetAddr &addr)
bool	SeenLocal (const CService &addr)
bool	IsLocal (const CService &addr)
static CAddress	GetBindAddress (SOCKET sock)
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)

Variables
static constexpr int	DUMP_PEERS_INTERVAL = 15 * 60
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
CCriticalSection	cs_mapLocalHost
std::string	strSubVersion
static CNetCleanup	instance_of_cnetcleanup

Macro Definition Documentation

FEELER_SLEEP_WINDOW

#define FEELER_SLEEP_WINDOW   1

MSG_DONTWAIT

#define MSG_DONTWAIT   0

MSG_NOSIGNAL

#define MSG_NOSIGNAL   0

X

#define X

(

name

)

stats.name = name

Enumeration Type Documentation

BindFlags

enum BindFlags

Used to pass flags to the Bind() function

Enumerator
BF_NONE
BF_EXPLICIT
BF_REPORT_ERROR
BF_WHITELIST

Function Documentation

AddLocal() [1/2]

bool AddLocal	(	const CService &	addr,
		int	nScore
	)

AddLocal() [2/2]

bool AddLocal	(	const CNetAddr &	addr,
		int	nScore
	)

AdvertiseLocal()

void AdvertiseLocal

(

CNode *

pnode

)

CompareNetGroupKeyed()

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

static

CompareNodeBlockTime()

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

static

CompareNodeTXTime()

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

static

convertSeed6()

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

static

Convert the pnSeed6 array into usable address objects.

Discover()

void Discover

(

)

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.

GetBindAddress()

static CAddress GetBindAddress ( SOCKET  sock )

static

Get the bind address for a socket as CAddress

GetListenPort()

unsigned short GetListenPort

(

)

GetLocal()

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

GetLocalAddress()

CAddress GetLocalAddress	(	const CNetAddr *	paddrPeer,
		ServiceFlags	nLocalServices
	)

GetnScore()

static int GetnScore ( const CService &  addr )

static

GUARDED_BY()

std::map<CNetAddr, LocalServiceInfo> mapLocalHost GUARDED_BY

(

cs_mapLocalHost

)

InterruptMapPort()

void InterruptMapPort

(

)

IsLocal()

bool IsLocal

(

const CService &

addr

)

check whether a given address is potentially local

IsPeerAddrLocalGood()

bool IsPeerAddrLocalGood

(

CNode *

pnode

)

IsReachable() [1/2]

bool IsReachable

(

enum Network

net

)

Returns

true if the network is reachable, false otherwise

IsReachable() [2/2]

bool IsReachable

(

const CNetAddr &

addr

)

Returns

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

PoissonNextSend()

int64_t PoissonNextSend	(	int64_t	now,
		int	average_interval_seconds
	)

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

RemoveLocal()

void RemoveLocal

(

const CService &

addr

)

ReverseCompareNodeMinPingTime()

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

static

ReverseCompareNodeTimeConnected()

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

static

SeenLocal()

bool SeenLocal

(

const CService &

addr

)

vote for a local address

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

StartMapPort()

void StartMapPort

(

)

StopMapPort()

void StopMapPort

(

)

Variable Documentation

cs_mapLocalHost

CCriticalSection cs_mapLocalHost

DUMP_PEERS_INTERVAL

constexpr int DUMP_PEERS_INTERVAL = 15 * 60

static

fDiscover

bool fDiscover = true

fListen

bool fListen = true

g_relay_txes

bool g_relay_txes = !DEFAULT_BLOCKSONLY

instance_of_cnetcleanup

CNetCleanup instance_of_cnetcleanup

static

NET_MESSAGE_COMMAND_OTHER

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

RANDOMIZER_ID_LOCALHOSTNONCE

const uint64_t RANDOMIZER_ID_LOCALHOSTNONCE = 0xd93e69e2bbfa5735ULL

static

RANDOMIZER_ID_NETGROUP

const uint64_t RANDOMIZER_ID_NETGROUP = 0x6c0edd8036ef4036ULL

static

SELECT_TIMEOUT_MILLISECONDS

const uint64_t SELECT_TIMEOUT_MILLISECONDS = 50

static

strSubVersion

std::string strSubVersion

Subversion as sent to the P2P network in version messages