#include <avalanche/proofid.h>
#include <avalanche/proofradixtreeadapter.h>
#include <chainparams.h>
#include <common/bloom.h>
#include <compat.h>
#include <consensus/amount.h>
#include <crypto/siphash.h>
#include <hash.h>
#include <i2p.h>
#include <kernel/cs_main.h>
#include <logging.h>
#include <net_permissions.h>
#include <netaddress.h>
#include <netbase.h>
#include <node/connection_types.h>
#include <node/eviction.h>
#include <nodeid.h>
#include <protocol.h>
#include <pubkey.h>
#include <radix.h>
#include <random.h>
#include <span.h>
#include <streams.h>
#include <sync.h>
#include <threadinterrupt.h>
#include <uint256.h>
#include <util/check.h>
#include <util/sock.h>
#include <util/time.h>
#include <atomic>
#include <condition_variable>
#include <cstdint>
#include <deque>
#include <functional>
#include <list>
#include <map>
#include <memory>
#include <thread>
#include <vector>

Include dependency graph for net.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	AddedNodeInfo

struct	CSerializedNetMsg

struct	LocalServiceInfo

struct	CNodeStats
	POD that contains various stats about a node. More...

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

struct	CNodeOptions

class	CNode
	Information about a peer. More...

class	NetEventsInterface
	Interface for message handling. More...

class	CConnman

struct	CConnman::Options

struct	CConnman::ListenSocket

struct	CConnman::CachedAddrResponse
	Cache responses to addr requests to minimize privacy leak. 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 std::map< std::string, uint64_t >	mapMsgTypeSize

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 ()

bool	IsPeerAddrLocalGood (CNode *pnode)

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

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)

CService	GetLocalAddress (const CNetAddr &addrPeer)

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

std::string	getSubVersionEB (uint64_t MaxBlockSize)
	This function convert MaxBlockSize from byte to MB with a decimal precision one digit rounded down E.g. More...

std::string	userAgent (const Config &config)

void	CaptureMessageToFile (const CAddress &addr, const std::string &msg_type, Span< const uint8_t > data, bool is_incoming)
	Dump binary message to file, with timestamp. More...

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

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

static constexpr auto	EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL = 5min
	Run the extra block-relay-only connection loop once every 5 minutes. 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 = 16
	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	DEFAULT_MAX_AVALANCHE_OUTBOUND_CONNECTIONS = 300
	Maximum number of avalanche enabled outgoing connections by default. 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 unsigned int	DEFAULT_MAX_PEER_CONNECTIONS = 4096
	The maximum number of peer connections to maintain. More...

static constexpr uint64_t	DEFAULT_MAX_UPLOAD_TARGET = 0
	The default 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 int	NUM_FDS_MESSAGE_CAPTURE = 1
	Number of file descriptors required for message capture. More...

static const bool	DEFAULT_FORCEDNSSEED = false

static const bool	DEFAULT_DNSSEED = true

static const bool	DEFAULT_FIXEDSEEDS = true

static const size_t	DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

static const size_t	DEFAULT_MAXSENDBUFFER = 1 * 1000

const std::vector< std::string >	CONNECTION_TYPE_DOC

bool	fDiscover

bool	fListen

GlobalMutex	g_maplocalhost_mutex

const std::string	NET_MESSAGE_TYPE_OTHER

std::function< void(const CAddress &addr, const std::string &msg_type, Span< const uint8_t > data, bool is_incoming)>	CaptureMessage
	Defaults to `CaptureMessageToFile()`, but can be overridden by unit tests. More...

Typedef Documentation

◆ mapMsgTypeSize

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

Definition at line 206 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 155 of file net.h.

Function Documentation

◆ AddLocal() [1/2]

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

Definition at line 308 of file net.cpp.

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◆ AddLocal() [2/2]

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

Definition at line 279 of file net.cpp.

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◆ CaptureMessageToFile()

void CaptureMessageToFile	(	const CAddress &	addr,
		const std::string &	msg_type,
		Span< const uint8_t >	data,
		bool	is_incoming
	)

Dump binary message to file, with timestamp.

Definition at line 3156 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 and only the first address from each interface is used.

Definition at line 2297 of file net.cpp.

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◆ GetListenPort()

uint16_t GetListenPort ( )

Definition at line 138 of file net.cpp.

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◆ GetLocal()

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

Definition at line 174 of file net.cpp.

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◆ GetLocalAddress()

CService GetLocalAddress ( const CNetAddr & addrPeer )

Definition at line 222 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 244 of file net.cpp.

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◆ getSubVersionEB()

std::string getSubVersionEB ( uint64_t MaxBlockSize )

This function convert MaxBlockSize from byte to MB with a decimal precision one digit rounded down E.g.

1660000 -> 1.6 2010000 -> 2.0 1000000 -> 1.0 230000 -> 0.2 50000 -> 0.0

NB behavior for EB<1MB not standardized yet still the function applies the same algo used for EB greater or equal to 1MB

Definition at line 3122 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 347 of file net.cpp.

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◆ IsPeerAddrLocalGood()

bool IsPeerAddrLocalGood ( CNode * pnode )

Definition at line 238 of file net.cpp.

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◆ IsReachable() [1/2]

bool IsReachable ( const CNetAddr & addr )

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

Definition at line 331 of file net.cpp.

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◆ IsReachable() [2/2]

bool IsReachable ( enum Network net )

Returns: true if the network is reachable, false otherwise

Definition at line 326 of file net.cpp.

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◆ RemoveLocal()

void RemoveLocal ( const CService & addr )

Definition at line 312 of file net.cpp.

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◆ SeenLocal()

bool SeenLocal ( const CService & addr )

vote for a local address

Definition at line 336 of file net.cpp.

◆ 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 318 of file net.cpp.

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◆ userAgent()

std::string userAgent ( const Config & config )

Definition at line 3136 of file net.cpp.

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Variable Documentation

◆ CaptureMessage

std::function<void(const CAddress &addr, const std::string &msg_type, Span<const uint8_t> data, bool is_incoming)> CaptureMessage

extern

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

Definition at line 3188 of file net.cpp.

◆ CONNECTION_TYPE_DOC

const std::vector<std::string> CONNECTION_TYPE_DOC

Initial value:

{
    "outbound-full-relay (default automatic connections)",
    "block-relay-only (does not relay transactions or addresses)",
    "inbound (initiated by the peer)",
    "manual (added via addnode RPC or -addnode/-connect configuration options)",
    "addr-fetch (short-lived automatic connection for soliciting addresses)",
    "feeler (short-lived automatic connection for testing addresses)"}

Definition at line 137 of file net.h.

◆ DEFAULT_BLOCKSONLY

const bool DEFAULT_BLOCKSONLY = false

static

Default for blocks only.

Definition at line 96 of file net.h.

◆ DEFAULT_DNSSEED

const bool DEFAULT_DNSSEED = true

static

Definition at line 103 of file net.h.

◆ DEFAULT_FIXEDSEEDS

const bool DEFAULT_FIXEDSEEDS = true

static

Definition at line 104 of file net.h.

◆ DEFAULT_FORCEDNSSEED

const bool DEFAULT_FORCEDNSSEED = false

static

Definition at line 102 of file net.h.

◆ DEFAULT_LISTEN

const bool DEFAULT_LISTEN = true

static

-listen default

Definition at line 86 of file net.h.

◆ DEFAULT_MAX_AVALANCHE_OUTBOUND_CONNECTIONS

const int DEFAULT_MAX_AVALANCHE_OUTBOUND_CONNECTIONS = 300

static

Maximum number of avalanche enabled outgoing connections by default.

Can be overridden with the -maxavalancheoutbound option.

Definition at line 82 of file net.h.

◆ DEFAULT_MAX_PEER_CONNECTIONS

const unsigned int DEFAULT_MAX_PEER_CONNECTIONS = 4096

static

The maximum number of peer connections to maintain.

This quantity might not be reachable on some systems, especially on platforms that do not provide a working poll() interface.

Definition at line 92 of file net.h.

◆ DEFAULT_MAX_UPLOAD_TARGET

constexpr uint64_t DEFAULT_MAX_UPLOAD_TARGET = 0

staticconstexpr

The default for -maxuploadtarget.

0 = Unlimited

Definition at line 94 of file net.h.

◆ DEFAULT_MAXRECEIVEBUFFER

const size_t DEFAULT_MAXRECEIVEBUFFER = 5 * 1000

static

Definition at line 105 of file net.h.

◆ DEFAULT_MAXSENDBUFFER

const size_t DEFAULT_MAXSENDBUFFER = 1 * 1000

static

Definition at line 106 of file net.h.

◆ DEFAULT_PEER_CONNECT_TIMEOUT

const int64_t DEFAULT_PEER_CONNECT_TIMEOUT = 60

static

-peertimeout default

Definition at line 98 of file net.h.

◆ EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL

constexpr auto EXTRA_BLOCK_RELAY_ONLY_PEER_INTERVAL = 5min

staticconstexpr

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

Definition at line 66 of file net.h.

◆ fDiscover

bool fDiscover

extern

Definition at line 126 of file net.cpp.

◆ FEELER_INTERVAL

constexpr auto FEELER_INTERVAL = 2min

staticconstexpr

Run the feeler connection loop once every 2 minutes.

Definition at line 64 of file net.h.

◆ fListen

bool fListen

extern

Definition at line 127 of file net.cpp.

◆ g_maplocalhost_mutex

GlobalMutex g_maplocalhost_mutex

extern

Definition at line 128 of file net.cpp.

◆ MAX_ADDNODE_CONNECTIONS

const int MAX_ADDNODE_CONNECTIONS = 8

static

Maximum number of addnode outgoing nodes.

Definition at line 75 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 77 of file net.h.

◆ MAX_FEELER_CONNECTIONS

const int MAX_FEELER_CONNECTIONS = 1

static

Maximum number of feeler connections.

Definition at line 84 of file net.h.

◆ MAX_OUTBOUND_FULL_RELAY_CONNECTIONS

const int MAX_OUTBOUND_FULL_RELAY_CONNECTIONS = 16

static

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

Definition at line 73 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 68 of file net.h.

◆ NET_MESSAGE_TYPE_OTHER

const std::string NET_MESSAGE_TYPE_OTHER

extern

Definition at line 113 of file net.cpp.

◆ NUM_FDS_MESSAGE_CAPTURE

const int NUM_FDS_MESSAGE_CAPTURE = 1

static

Number of file descriptors required for message capture.

Definition at line 100 of file net.h.

◆ TIMEOUT_INTERVAL

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

staticconstexpr

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

Definition at line 62 of file net.h.

Classes

Typedefs

Enumerations

Functions

Variables

Typedef Documentation

◆ mapMsgTypeSize

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ AddLocal() [1/2]

◆ AddLocal() [2/2]

◆ CaptureMessageToFile()

◆ Discover()

◆ GetListenPort()

◆ GetLocal()

◆ GetLocalAddress()

◆ GetLocalAddrForPeer()

◆ getSubVersionEB()

◆ GUARDED_BY()

◆ IsLocal()

◆ IsPeerAddrLocalGood()

◆ IsReachable() [1/2]

◆ IsReachable() [2/2]

◆ RemoveLocal()

◆ SeenLocal()

◆ SetReachable()

◆ userAgent()

Variable Documentation

◆ CaptureMessage

◆ CONNECTION_TYPE_DOC

◆ DEFAULT_BLOCKSONLY

◆ DEFAULT_DNSSEED

◆ DEFAULT_FIXEDSEEDS

◆ DEFAULT_FORCEDNSSEED

◆ DEFAULT_LISTEN

◆ DEFAULT_MAX_AVALANCHE_OUTBOUND_CONNECTIONS

◆ DEFAULT_MAX_PEER_CONNECTIONS

◆ DEFAULT_MAX_UPLOAD_TARGET

◆ DEFAULT_MAXRECEIVEBUFFER

◆ DEFAULT_MAXSENDBUFFER

◆ DEFAULT_PEER_CONNECT_TIMEOUT

◆ 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_SUBVERSION_LENGTH

◆ NET_MESSAGE_TYPE_OTHER

◆ NUM_FDS_MESSAGE_CAPTURE

◆ TIMEOUT_INTERVAL