#include <addrdb.h>
#include <addrman.h>
#include <amount.h>
#include <bloom.h>
#include <compat.h>
#include <crypto/siphash.h>
#include <hash.h>
#include <limitedmap.h>
#include <netaddress.h>
#include <net_permissions.h>
#include <policy/feerate.h>
#include <protocol.h>
#include <random.h>
#include <streams.h>
#include <sync.h>
#include <threadinterrupt.h>
#include <uint256.h>
#include <atomic>
#include <cstdint>
#include <deque>
#include <map>
#include <thread>
#include <memory>
#include <condition_variable>
#include <arpa/inet.h>

Include dependency graph for net.h:

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Classes
struct	AddedNodeInfo

struct	CSerializedNetMsg

class	CConnman

struct	CConnman::Options

struct	CConnman::ListenSocket

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

struct	CombinerAll

class	NetEventsInterface
	Interface for message handling. More...

struct	LocalServiceInfo

class	CNodeStats

class	CNetMessage
	Transport protocol agnostic message container. More...

class	TransportDeserializer
	The TransportDeserializer takes care of holding and deserializing the network receive buffer. More...

class	V1TransportDeserializer

class	TransportSerializer
	The TransportSerializer prepares messages for the network transport. More...

class	V1TransportSerializer

class	CNode
	Information about a peer. More...

struct	CNode::TxRelay

Typedefs
typedef int64_t	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 ()

void	StartMapPort ()

void	InterruptMapPort ()

void	StopMapPort ()

uint16_t	GetListenPort ()

bool	IsPeerAddrLocalGood (CNode *pnode)

void	AdvertiseLocal (CNode *pnode)

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

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

void	RemoveLocal (const CService &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...

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

CAddress	GetLocalAddress (const CNetAddr *paddrPeer, ServiceFlags nLocalServices)

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

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

std::chrono::microseconds	PoissonNextSend (std::chrono::microseconds now, std::chrono::seconds average_interval)
	Wrapper to return mockable type. More...

Variables
static const bool	DEFAULT_WHITELISTRELAY = true
	Default for -whitelistrelay. More...

static const bool	DEFAULT_WHITELISTFORCERELAY = false
	Default for -whitelistforcerelay. More...

static const int	TIMEOUT_INTERVAL = 20 * 60
	Time after which to disconnect, after waiting for a ping response (or inactivity). More...

static const int	FEELER_INTERVAL = 120
	Run the feeler connection loop once every 2 minutes or 120 seconds. More...

static const unsigned int	MAX_ADDR_TO_SEND = 1000
	The maximum number of new addresses to accumulate before announcing. More...

static const unsigned int	MAX_PROTOCOL_MESSAGE_LENGTH = 4 * 1000 * 1000
	Maximum length of incoming protocol messages (no message over 4 MB is currently acceptable). More...

static const unsigned int	MAX_SUBVERSION_LENGTH = 256
	Maximum length of the user agent string in `version` message. More...

static const int	MAX_OUTBOUND_FULL_RELAY_CONNECTIONS = 8
	Maximum number of automatic outgoing nodes over which we'll relay everything (blocks, tx, addrs, etc) More...

static const int	MAX_ADDNODE_CONNECTIONS = 8
	Maximum number of addnode outgoing nodes. More...

static const int	MAX_BLOCK_RELAY_ONLY_CONNECTIONS = 2
	Maximum number of block-relay-only outgoing connections. More...

static const int	MAX_FEELER_CONNECTIONS = 1
	Maximum number of feeler connections. More...

static const bool	DEFAULT_LISTEN = true
	-listen default More...

static const bool	DEFAULT_UPNP = false
	-upnp default More...

static const unsigned int	DEFAULT_MAX_PEER_CONNECTIONS = 125
	The maximum number of peer connections to maintain. More...

static const uint64_t	DEFAULT_MAX_UPLOAD_TARGET = 0
	The default for -maxuploadtarget. More...

static const uint64_t	MAX_UPLOAD_TIMEFRAME = 60 * 60 * 24
	The default timeframe for -maxuploadtarget. More...

static const bool	DEFAULT_BLOCKSONLY = false
	Default for blocks only. More...

static const int64_t	DEFAULT_PEER_CONNECT_TIMEOUT = 60
	-peertimeout default More...

static const bool	DEFAULT_FORCEDNSSEED = false

static const size_t	DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

static const size_t	DEFAULT_MAXSENDBUFFER = 1 * 1000

bool	fDiscover

bool	fListen

bool	g_relay_txes

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

RecursiveMutex	cs_mapLocalHost

const std::string	NET_MESSAGE_COMMAND_OTHER

Typedef Documentation

◆ mapMsgCmdSize

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

Definition at line 604 of file net.h.

◆ NodeId

typedef int64_t 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 555 of file net.h.

Function Documentation

◆ AddLocal() [1/2]

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

Definition at line 224 of file net.cpp.

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◆ AddLocal() [2/2]

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

Definition at line 250 of file net.cpp.

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◆ AdvertiseLocal()

void AdvertiseLocal ( CNode * pnode )

Definition at line 197 of file net.cpp.

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◆ Discover()

void Discover ( )

Definition at line 2203 of file net.cpp.

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◆ GetListenPort()

uint16_t GetListenPort ( )

Definition at line 114 of file net.cpp.

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◆ GetLocal()

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

Definition at line 120 of file net.cpp.

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◆ GetLocalAddress()

CAddress GetLocalAddress	(	const CNetAddr *	paddrPeer,
		ServiceFlags	nLocalServices
	)

Definition at line 169 of file net.cpp.

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◆ GUARDED_BY()

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

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◆ InterruptMapPort()

void InterruptMapPort ( )

Definition at line 1583 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 295 of file net.cpp.

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◆ IsPeerAddrLocalGood()

bool IsPeerAddrLocalGood ( CNode * pnode )

Definition at line 189 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 270 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 276 of file net.cpp.

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◆ PoissonNextSend() [1/2]

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 2871 of file net.cpp.

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◆ PoissonNextSend() [2/2]

std::chrono::microseconds PoissonNextSend	(	std::chrono::microseconds	now,
		std::chrono::seconds	average_interval
	)

inline

Wrapper to return mockable type.

Definition at line 1037 of file net.h.

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◆ RemoveLocal()

void RemoveLocal ( const CService & addr )

Definition at line 255 of file net.cpp.

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◆ SeenLocal()

bool SeenLocal ( const CService & addr )

vote for a local address

Definition at line 282 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 262 of file net.cpp.

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◆ StartMapPort()

void StartMapPort ( )

Definition at line 1579 of file net.cpp.

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◆ StopMapPort()

void StopMapPort ( )

Definition at line 1587 of file net.cpp.

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Variable Documentation

◆ cs_mapLocalHost

RecursiveMutex cs_mapLocalHost

Definition at line 103 of file net.cpp.

◆ DEFAULT_BLOCKSONLY

const bool DEFAULT_BLOCKSONLY = false

static

Default for blocks only.

Definition at line 86 of file net.h.

◆ DEFAULT_FORCEDNSSEED

const bool DEFAULT_FORCEDNSSEED = false

static

Definition at line 90 of file net.h.

◆ DEFAULT_LISTEN

const bool DEFAULT_LISTEN = true

static

-listen default

Definition at line 72 of file net.h.

◆ DEFAULT_MAX_PEER_CONNECTIONS

const unsigned int DEFAULT_MAX_PEER_CONNECTIONS = 125

static

The maximum number of peer connections to maintain.

Definition at line 80 of file net.h.

◆ DEFAULT_MAX_UPLOAD_TARGET

const uint64_t DEFAULT_MAX_UPLOAD_TARGET = 0

static

The default for -maxuploadtarget.

0 = Unlimited

Definition at line 82 of file net.h.

◆ DEFAULT_MAXRECEIVEBUFFER

const size_t DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

static

Definition at line 91 of file net.h.

◆ DEFAULT_MAXSENDBUFFER

const size_t DEFAULT_MAXSENDBUFFER = 1 * 1000

static

Definition at line 92 of file net.h.

◆ DEFAULT_PEER_CONNECT_TIMEOUT

const int64_t DEFAULT_PEER_CONNECT_TIMEOUT = 60

static

-peertimeout default

Definition at line 88 of file net.h.

◆ DEFAULT_UPNP

const bool DEFAULT_UPNP = false

static

-upnp default

Definition at line 77 of file net.h.

◆ DEFAULT_WHITELISTFORCERELAY

const bool DEFAULT_WHITELISTFORCERELAY = false

static

Default for -whitelistforcerelay.

Definition at line 48 of file net.h.

◆ DEFAULT_WHITELISTRELAY

const bool DEFAULT_WHITELISTRELAY = true

static

Default for -whitelistrelay.

Definition at line 46 of file net.h.

◆ fDiscover

bool fDiscover

Definition at line 100 of file net.cpp.

◆ 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.

◆ fListen

bool fListen

Definition at line 101 of file net.cpp.

◆ g_relay_txes

bool g_relay_txes

Definition at line 102 of file net.cpp.

◆ MAX_ADDNODE_CONNECTIONS

const int MAX_ADDNODE_CONNECTIONS = 8

static

Maximum number of addnode outgoing nodes.

Definition at line 66 of file net.h.

◆ 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 55 of file net.h.

◆ MAX_BLOCK_RELAY_ONLY_CONNECTIONS

const int MAX_BLOCK_RELAY_ONLY_CONNECTIONS = 2

static

Maximum number of block-relay-only outgoing connections.

Definition at line 68 of file net.h.

◆ MAX_FEELER_CONNECTIONS

const int MAX_FEELER_CONNECTIONS = 1

static

Maximum number of feeler connections.

Definition at line 70 of file net.h.

◆ MAX_OUTBOUND_FULL_RELAY_CONNECTIONS

const int MAX_OUTBOUND_FULL_RELAY_CONNECTIONS = 8

static

Maximum number of automatic outgoing nodes over which we'll relay everything (blocks, tx, addrs, etc)

Definition at line 64 of file net.h.

◆ MAX_PROTOCOL_MESSAGE_LENGTH

const unsigned int MAX_PROTOCOL_MESSAGE_LENGTH = 4 * 1000 * 1000

static

Maximum length of incoming protocol messages (no message over 4 MB is currently acceptable).

Definition at line 60 of file net.h.

◆ MAX_SUBVERSION_LENGTH

const unsigned int MAX_SUBVERSION_LENGTH = 256

static

Maximum length of the user agent string in version message.

Definition at line 62 of file net.h.

◆ MAX_UPLOAD_TIMEFRAME

const uint64_t MAX_UPLOAD_TIMEFRAME = 60 * 60 * 24

static

The default timeframe for -maxuploadtarget.

1 day.

Definition at line 84 of file net.h.

◆ NET_MESSAGE_COMMAND_OTHER

const std::string NET_MESSAGE_COMMAND_OTHER

Definition at line 93 of file net.cpp.

◆ strSubVersion

std::string strSubVersion

Subversion as sent to the P2P network in version messages.

Definition at line 106 of file net.cpp.

◆ 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 51 of file net.h.

Classes

Typedefs

Enumerations

Functions

Variables

Typedef Documentation

◆ mapMsgCmdSize

◆ NodeId

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ AddLocal() [1/2]

◆ AddLocal() [2/2]

◆ AdvertiseLocal()

◆ Discover()

◆ GetListenPort()

◆ GetLocal()

◆ GetLocalAddress()

◆ GUARDED_BY()

◆ InterruptMapPort()

◆ IsLocal()

◆ IsPeerAddrLocalGood()

◆ IsReachable() [1/2]

◆ IsReachable() [2/2]

◆ PoissonNextSend() [1/2]

◆ PoissonNextSend() [2/2]

◆ RemoveLocal()

◆ SeenLocal()

◆ SetReachable()

◆ StartMapPort()

◆ StopMapPort()

Variable Documentation

◆ cs_mapLocalHost

◆ DEFAULT_BLOCKSONLY

◆ DEFAULT_FORCEDNSSEED

◆ DEFAULT_LISTEN

◆ DEFAULT_MAX_PEER_CONNECTIONS

◆ DEFAULT_MAX_UPLOAD_TARGET

◆ DEFAULT_MAXRECEIVEBUFFER

◆ DEFAULT_MAXSENDBUFFER

◆ DEFAULT_PEER_CONNECT_TIMEOUT

◆ DEFAULT_UPNP

◆ DEFAULT_WHITELISTFORCERELAY

◆ DEFAULT_WHITELISTRELAY

◆ fDiscover

◆ FEELER_INTERVAL

◆ fListen

◆ g_relay_txes

◆ MAX_ADDNODE_CONNECTIONS

◆ MAX_ADDR_TO_SEND

◆ MAX_BLOCK_RELAY_ONLY_CONNECTIONS

◆ MAX_FEELER_CONNECTIONS

◆ MAX_OUTBOUND_FULL_RELAY_CONNECTIONS

◆ MAX_PROTOCOL_MESSAGE_LENGTH

◆ MAX_SUBVERSION_LENGTH

◆ MAX_UPLOAD_TIMEFRAME

◆ NET_MESSAGE_COMMAND_OTHER

◆ strSubVersion

◆ TIMEOUT_INTERVAL