#include <bip324.h>
#include <chainparams.h>
#include <common/bloom.h>
#include <compat/compat.h>
#include <consensus/amount.h>
#include <crypto/siphash.h>
#include <hash.h>
#include <i2p.h>
#include <kernel/messagestartchars.h>
#include <net_permissions.h>
#include <netaddress.h>
#include <netbase.h>
#include <netgroup.h>
#include <node/connection_types.h>
#include <node/protocol_version.h>
#include <policy/feerate.h>
#include <protocol.h>
#include <random.h>
#include <semaphore_grant.h>
#include <span.h>
#include <streams.h>
#include <sync.h>
#include <uint256.h>
#include <util/check.h>
#include <util/sock.h>
#include <util/threadinterrupt.h>
#include <atomic>
#include <condition_variable>
#include <cstdint>
#include <deque>
#include <functional>
#include <list>
#include <map>
#include <memory>
#include <optional>
#include <queue>
#include <string_view>
#include <thread>
#include <unordered_set>
#include <vector>

Include dependency graph for net.h:

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Classes
struct	AddedNodeParams

struct	AddedNodeInfo

struct	CSerializedNetMsg

struct	LocalServiceInfo

class	CNodeStats

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

class	Transport
	The Transport converts one connection's sent messages to wire bytes, and received bytes back. More...

struct	Transport::Info

class	V1Transport

class	V2Transport

struct	CNodeOptions

class	CNode
	Information about a peer. More...

class	NetEventsInterface
	Interface for message handling. More...

class	CConnman

struct	CConnman::Options

class	CConnman::PrivateBroadcast
	Group of private broadcast related members. More...

struct	CConnman::ListenSocket

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

struct	CConnman::ReconnectionInfo
	Struct for entries in m_reconnections. More...

class	CConnman::NodesSnapshot
	RAII helper to atomically create a copy of `m_nodes` and add a reference to each of the nodes. More...

Typedefs
typedef int64_t	NodeId

using	mapMsgTypeSize = std::map< std::string, uint64_t >

Enumerations
enum	{ LOCAL_NONE , LOCAL_IF , LOCAL_BIND , LOCAL_MAPPED , LOCAL_MANUAL , LOCAL_MAX }

Functions
void	Discover ()
	Look up IP addresses from all interfaces on the machine and add them to the list of local addresses to self-advertise. More...

uint16_t	GetListenPort ()

std::optional< CService >	GetLocalAddrForPeer (CNode &node)
	Returns a local address that we should advertise to this peer. More...

void	ClearLocal ()

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

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

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...

CService	GetLocalAddress (const CNode &peer)

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

Variables
constexpr std::chrono::minutes	TIMEOUT_INTERVAL {20}
	Time after which to disconnect, after waiting for a ping response (or inactivity). More...

constexpr auto	FEELER_INTERVAL = 2min
	Run the feeler connection loop once every 2 minutes. More...

constexpr auto	EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL = 5min
	Run the extra block-relay-only connection loop once every 5 minutes. More...

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

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

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

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

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

constexpr int	MAX_FEELER_CONNECTIONS = 1
	Maximum number of feeler connections. More...

constexpr size_t	MAX_PRIVATE_BROADCAST_CONNECTIONS {64}
	Maximum number of private broadcast connections. More...

constexpr bool	DEFAULT_LISTEN = true
	-listen default More...

constexpr unsigned int	DEFAULT_MAX_PEER_CONNECTIONS {200}
	The maximum number of peer connections to maintain. More...

constexpr int	DEFAULT_FULL_RELAY_INBOUND_PCT {50}
	Default percentage of inbound connection slots that tx-relaying peers can use. More...

const std::string	DEFAULT_MAX_UPLOAD_TARGET {"0M"}
	The default for -maxuploadtarget. More...

constexpr bool	DEFAULT_BLOCKSONLY = false
	Default for blocks only. More...

constexpr int64_t	DEFAULT_PEER_CONNECT_TIMEOUT = 60
	-peertimeout default More...

constexpr bool	DEFAULT_PRIVATE_BROADCAST {false}
	Default for -privatebroadcast. More...

constexpr int	NUM_FDS_MESSAGE_CAPTURE = 1
	Number of file descriptors required for message capture. More...

constexpr std::chrono::hours	ASMAP_HEALTH_CHECK_INTERVAL {24}
	Interval for ASMap Health Check. More...

constexpr bool	DEFAULT_FORCEDNSSEED {false}

constexpr bool	DEFAULT_DNSSEED {true}

constexpr bool	DEFAULT_FIXEDSEEDS {true}

constexpr size_t	DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

constexpr size_t	DEFAULT_MAXSENDBUFFER = 1 * 1000

constexpr bool	DEFAULT_V2_TRANSPORT {true}

bool	fDiscover

bool	fListen

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

GlobalMutex	g_maplocalhost_mutex

const std::string	NET_MESSAGE_TYPE_OTHER

std::function< void(const CAddress &addr, const std::string &msg_type, std::span< const unsigned char > data, bool is_incoming)>	CaptureMessage
	Defaults to `CaptureMessageToFile()`, but can be overridden by unit tests. More...

Typedef Documentation

◆ mapMsgTypeSize

using mapMsgTypeSize = std::map< std::string, uint64_t>

Definition at line 191 of file net.h.

◆ NodeId

typedef int64_t NodeId

Definition at line 105 of file net.h.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
LOCAL_NONE
LOCAL_IF
LOCAL_BIND
LOCAL_MAPPED
LOCAL_MANUAL
LOCAL_MAX

Definition at line 154 of file net.h.

Function Documentation

◆ AddLocal() [1/2]

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

Definition at line 308 of file net.cpp.

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◆ AddLocal() [2/2]

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

Definition at line 278 of file net.cpp.

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◆ ClearLocal()

void ClearLocal ( )

Definition at line 271 of file net.cpp.

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◆ Discover()

void Discover ( )

Look up IP addresses from all interfaces on the machine and add them to the list of local addresses to self-advertise.

The loopback interface is skipped.

Definition at line 3440 of file net.cpp.

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◆ GetListenPort()

uint16_t GetListenPort ( )

Definition at line 139 of file net.cpp.

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◆ GetLocalAddress()

CService GetLocalAddress ( const CNode & peer )

Definition at line 221 of file net.cpp.

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◆ GetLocalAddrForPeer()

std::optional< CService > GetLocalAddrForPeer ( CNode & node )

Returns a local address that we should advertise to this peer.

Definition at line 241 of file net.cpp.

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◆ GUARDED_BY()

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

◆ IsLocal()

bool IsLocal ( const CService & addr )

check whether a given address is potentially local

Definition at line 335 of file net.cpp.

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◆ RemoveLocal()

void RemoveLocal ( const CService & addr )

Definition at line 313 of file net.cpp.

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◆ SeenLocal()

bool SeenLocal ( const CService & addr )

vote for a local address

Definition at line 324 of file net.cpp.

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Variable Documentation

◆ ASMAP_HEALTH_CHECK_INTERVAL

constexpr std::chrono::hours ASMAP_HEALTH_CHECK_INTERVAL {24}

inlineconstexpr

Interval for ASMap Health Check.

Definition at line 95 of file net.h.

◆ CaptureMessage

std::function<void(const CAddress& addr, const std::string& msg_type, std::span<const unsigned char> data, bool is_incoming)> CaptureMessage

extern

Defaults to CaptureMessageToFile(), but can be overridden by unit tests.

Definition at line 4333 of file net.cpp.

◆ DEFAULT_BLOCKSONLY

constexpr bool DEFAULT_BLOCKSONLY = false

inlineconstexpr

Default for blocks only.

Definition at line 87 of file net.h.

◆ DEFAULT_DNSSEED

constexpr bool DEFAULT_DNSSEED {true}

inlineconstexpr

Definition at line 98 of file net.h.

◆ DEFAULT_FIXEDSEEDS

constexpr bool DEFAULT_FIXEDSEEDS {true}

inlineconstexpr

Definition at line 99 of file net.h.

◆ DEFAULT_FORCEDNSSEED

constexpr bool DEFAULT_FORCEDNSSEED {false}

inlineconstexpr

Definition at line 97 of file net.h.

◆ DEFAULT_FULL_RELAY_INBOUND_PCT

constexpr int DEFAULT_FULL_RELAY_INBOUND_PCT {50}

inlineconstexpr

Default percentage of inbound connection slots that tx-relaying peers can use.

Definition at line 83 of file net.h.

◆ DEFAULT_LISTEN

constexpr bool DEFAULT_LISTEN = true

inlineconstexpr

-listen default

Definition at line 79 of file net.h.

◆ DEFAULT_MAX_PEER_CONNECTIONS

constexpr unsigned int DEFAULT_MAX_PEER_CONNECTIONS {200}

inlineconstexpr

The maximum number of peer connections to maintain.

Definition at line 81 of file net.h.

◆ DEFAULT_MAX_UPLOAD_TARGET

const std::string DEFAULT_MAX_UPLOAD_TARGET {"0M"}

inline

The default for -maxuploadtarget.

0 = Unlimited

Definition at line 85 of file net.h.

◆ DEFAULT_MAXRECEIVEBUFFER

constexpr size_t DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

inlineconstexpr

Definition at line 100 of file net.h.

◆ DEFAULT_MAXSENDBUFFER

constexpr size_t DEFAULT_MAXSENDBUFFER = 1 * 1000

inlineconstexpr

Definition at line 101 of file net.h.

◆ DEFAULT_PEER_CONNECT_TIMEOUT

constexpr int64_t DEFAULT_PEER_CONNECT_TIMEOUT = 60

inlineconstexpr

-peertimeout default

Definition at line 89 of file net.h.

◆ DEFAULT_PRIVATE_BROADCAST

constexpr bool DEFAULT_PRIVATE_BROADCAST {false}

inlineconstexpr

Default for -privatebroadcast.

Definition at line 91 of file net.h.

◆ DEFAULT_V2_TRANSPORT

constexpr bool DEFAULT_V2_TRANSPORT {true}

inlineconstexpr

Definition at line 103 of file net.h.

◆ EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL

constexpr auto EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL = 5min

inlineconstexpr

Run the extra block-relay-only connection loop once every 5 minutes.

Definition at line 63 of file net.h.

◆ fDiscover

bool fDiscover

extern

Definition at line 117 of file net.cpp.

◆ FEELER_INTERVAL

constexpr auto FEELER_INTERVAL = 2min

inlineconstexpr

Run the feeler connection loop once every 2 minutes.

Definition at line 61 of file net.h.

◆ fListen

bool fListen

extern

Definition at line 118 of file net.cpp.

◆ g_maplocalhost_mutex

GlobalMutex g_maplocalhost_mutex

extern

Definition at line 119 of file net.cpp.

◆ MAX_ADDNODE_CONNECTIONS

constexpr int MAX_ADDNODE_CONNECTIONS = 8

inlineconstexpr

Maximum number of addnode outgoing nodes.

Definition at line 71 of file net.h.

◆ MAX_BLOCK_RELAY_ONLY_CONNECTIONS

constexpr int MAX_BLOCK_RELAY_ONLY_CONNECTIONS = 2

inlineconstexpr

Maximum number of block-relay-only outgoing connections.

Definition at line 73 of file net.h.

◆ MAX_FEELER_CONNECTIONS

constexpr int MAX_FEELER_CONNECTIONS = 1

inlineconstexpr

Maximum number of feeler connections.

Definition at line 75 of file net.h.

◆ MAX_OUTBOUND_FULL_RELAY_CONNECTIONS

constexpr int MAX_OUTBOUND_FULL_RELAY_CONNECTIONS = 8

inlineconstexpr

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

Definition at line 69 of file net.h.

◆ MAX_PRIVATE_BROADCAST_CONNECTIONS

constexpr size_t MAX_PRIVATE_BROADCAST_CONNECTIONS {64}

inlineconstexpr

Maximum number of private broadcast connections.

Definition at line 77 of file net.h.

◆ MAX_PROTOCOL_MESSAGE_LENGTH

constexpr unsigned int MAX_PROTOCOL_MESSAGE_LENGTH = 4 * 1000 * 1000

inlineconstexpr

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

Definition at line 65 of file net.h.

◆ MAX_SUBVERSION_LENGTH

constexpr unsigned int MAX_SUBVERSION_LENGTH = 256

inlineconstexpr

Maximum length of the user agent string in version message.

Definition at line 67 of file net.h.

◆ NET_MESSAGE_TYPE_OTHER

const std::string NET_MESSAGE_TYPE_OTHER

extern

Definition at line 109 of file net.cpp.

◆ NUM_FDS_MESSAGE_CAPTURE

constexpr int NUM_FDS_MESSAGE_CAPTURE = 1

inlineconstexpr

Number of file descriptors required for message capture.

Definition at line 93 of file net.h.

◆ strSubVersion

std::string strSubVersion

extern

Subversion as sent to the P2P network in version messages.

Definition at line 121 of file net.cpp.

◆ TIMEOUT_INTERVAL

constexpr std::chrono::minutes TIMEOUT_INTERVAL {20}

inlineconstexpr

Time after which to disconnect, after waiting for a ping response (or inactivity).

Definition at line 59 of file net.h.

Classes

Typedefs

Enumerations

Functions

Variables

Typedef Documentation

◆ mapMsgTypeSize

◆ NodeId

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ AddLocal() [1/2]

◆ AddLocal() [2/2]

◆ ClearLocal()

◆ Discover()

◆ GetListenPort()

◆ GetLocalAddress()

◆ GetLocalAddrForPeer()

◆ GUARDED_BY()

◆ IsLocal()

◆ RemoveLocal()

◆ SeenLocal()

Variable Documentation

◆ ASMAP_HEALTH_CHECK_INTERVAL

◆ CaptureMessage

◆ DEFAULT_BLOCKSONLY

◆ DEFAULT_DNSSEED

◆ DEFAULT_FIXEDSEEDS

◆ DEFAULT_FORCEDNSSEED

◆ DEFAULT_FULL_RELAY_INBOUND_PCT

◆ DEFAULT_LISTEN

◆ DEFAULT_MAX_PEER_CONNECTIONS

◆ DEFAULT_MAX_UPLOAD_TARGET

◆ DEFAULT_MAXRECEIVEBUFFER

◆ DEFAULT_MAXSENDBUFFER

◆ DEFAULT_PEER_CONNECT_TIMEOUT

◆ DEFAULT_PRIVATE_BROADCAST

◆ DEFAULT_V2_TRANSPORT

◆ EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL

◆ fDiscover

◆ FEELER_INTERVAL

◆ fListen

◆ g_maplocalhost_mutex

◆ MAX_ADDNODE_CONNECTIONS

◆ MAX_BLOCK_RELAY_ONLY_CONNECTIONS

◆ MAX_FEELER_CONNECTIONS

◆ MAX_OUTBOUND_FULL_RELAY_CONNECTIONS

◆ MAX_PRIVATE_BROADCAST_CONNECTIONS

◆ MAX_PROTOCOL_MESSAGE_LENGTH

◆ MAX_SUBVERSION_LENGTH

◆ NET_MESSAGE_TYPE_OTHER

◆ NUM_FDS_MESSAGE_CAPTURE

◆ strSubVersion

◆ TIMEOUT_INTERVAL