wire

package
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 Go to latest Published: Mar 15, 2017 License: ISC Imports: 17 Imported by: 53

README

wire

Package wire handles encoding/decoding of messages from bytes.

Documentation

Index

Constants

View Source 
const (
	CmdVersion = "version"
	CmdVerAck  = "verack"
	CmdAddr    = "addr"
	CmdInv     = "inv"
	CmdGetData = "getdata"
	CmdObject  = "object"
	CmdPong    = "pong"
)

Commands used in bitmessage message headers which describe the type of message.

View Source 
const CommandSize = 12

CommandSize is the fixed size of all commands in the common bitmessage message header. Shorter commands must be zero padded.

View Source 
const DefaultUserAgent = "/wire:0.1.0/"

DefaultUserAgent for wire

View Source 
const MaxAddrPerMsg = 1000

MaxAddrPerMsg is the maximum number of addresses that can be in a single bitmessage addr message (MsgAddr).

View Source 
const (
	// MaxInvPerMsg is the maximum number of inventory vectors that can be in a
	// single bitmessage inv message.
	MaxInvPerMsg = 50000
)
View Source 
const MaxMessagePayload = 1600100

MaxMessagePayload is the maximum bytes a message can be regardless of other individual limits imposed by messages themselves. ~1.6 MB, which is which is the maximum possible size of an inv message.

View Source 
const (
	// MaxPayloadOfMsgObject is the the maximum payload of object message = 2^18 bytes.
	// (not to be confused with the object payload)
	MaxPayloadOfMsgObject = 262144
)
View Source 
const MaxPubKeyStringSize = PubKeySize * 2

MaxPubKeyStringSize is the maximum length of a PubKey string.

View Source 
const MaxStreams = 1

MaxStreams is the maximum number of allowed streams to request according to the bitmessage protocol. Keeping it at 1 for now.

View Source 
const MaxUserAgentLen = 5000

MaxUserAgentLen is the maximum allowed length for the user agent field in a version message (MsgVersion).

View Source 
const MessageHeaderSize = 24

MessageHeaderSize is the number of bytes in a bitmessage message header. Bitmessage network (magic) 4 bytes + command 12 bytes + payload length 4 bytes + checksum 4 bytes.

View Source 
const (
	// ProtocolVersion is the latest protocol version this package supports.
	ProtocolVersion uint32 = 3
)
View Source 
const PubKeySize = 64

PubKeySize is the size of array used to store uncompressed public keys. Note that the first byte (0x04) is excluded when storing them.

Variables

View Source 
var ErrInvalidNetAddr = errors.New("provided net.Addr is not a net.TCPAddr")

ErrInvalidNetAddr describes an error that indicates the caller didn't specify a TCP address as required.

View Source 
var ErrPubKeyStrSize = fmt.Errorf("string length must be %v chars", MaxPubKeyStringSize)

ErrPubKeyStrSize describes an error that indicates the caller specified a PubKey string that does not have the right number of characters.

Functions

func Encode 

func Encode(msg Encodable) []byte

Encode takes a message and returns a representation of it as a byte array as the message would appear in the database. This array is missing the the standard bitmessage header that goes along with every message sent over the p2p connection.

func RandomUint64 

func RandomUint64() (uint64, error)

RandomUint64 returns a cryptographically random uint64 value.

func ReadElement 

func ReadElement(r io.Reader, element interface{}) error

ReadElement reads the next sequence of bytes from r using big endian depending on the concrete type of element pointed to.

func ReadElements 

func ReadElements(r io.Reader, elements ...interface{}) error

ReadElements reads multiple items from r. It is equivalent to multiple calls to readElement.

func WriteElement 

func WriteElement(w io.Writer, element interface{}) error

WriteElement writes the big endian representation of element to w.

func WriteElements 

func WriteElements(w io.Writer, elements ...interface{}) error

WriteElements writes multiple items to w. It is equivalent to multiple calls to writeElement.

func WriteMessage 

func WriteMessage(w io.Writer, msg Message, bmnet BitmessageNet) error

WriteMessage writes a bitmessage Message to w including the necessary header information. This function is the same as WriteMessageN except it doesn't doesn't return the number of bytes written. This function is mainly provided for backwards compatibility with the original API, but it's also useful for callers that don't care about byte counts.

func WriteMessageN 

func WriteMessageN(w io.Writer, msg Message, bmnet BitmessageNet) (int, error)

WriteMessageN writes a bitmessage Message to w including the necessary header information and returns the number of bytes written. This function is the same as WriteMessage except it also returns the number of bytes written.

Types

type BitmessageNet 

type BitmessageNet uint32

BitmessageNet represents which bitmessage network a message belongs to. 

const (
	// MainNet represents the main bitmessage network.
	MainNet BitmessageNet = 0xe9beb4d9
)

Constants used to indicate the message bitmessage network. They can also be used to seek to the next message when a stream's state is unknown, but this package does not provide that functionality since it's generally a better idea to simply disconnect clients that are misbehaving over TCP.

func (BitmessageNet) String 

func (n BitmessageNet) String() string

String returns the BitmessageNet in human-readable form.

type Encodable 

type Encodable interface {
	Encode(io.Writer) error
	Decode(io.Reader) error
}

Encodable represents a type that can be written to or read from a stream.

type InvVect 

type InvVect hash.Sha // Hash of the data

InvVect defines a bitmessage inventory vector which is used to describe data, as specified by the Type field, that a peer wants, has, or does not have to another peer.

type Message 

type Message interface {
	Encodable
	Command() string
	MaxPayloadLength() int
}

Message is an interface that describes a bitmessage message. A type that implements Message has complete control over the representation of its data and may therefore contain additional or fewer fields than those which are used directly in the protocol encoded message.

func ReadMessage 

func ReadMessage(r io.Reader, bmnet BitmessageNet) (Message, []byte, error)

ReadMessage reads, validates, and parses the next bitmessage Message from r for bitmessage network. It returns the parsed Message and raw bytes which comprise the message. This function only differs from ReadMessageN in that it doesn't return the number of bytes read. This function is useful for callers that don't care about byte counts.

func ReadMessageN 

func ReadMessageN(r io.Reader, bmnet BitmessageNet) (int, Message, []byte, error)

ReadMessageN reads, validates, and parses the next bitmessage Message from r for the provided protocol version and bitmessage network. It returns the number of bytes read in addition to the parsed Message and raw bytes which comprise the message. This function is the same as ReadMessage except it also returns the number of bytes read.

type MessageError 

type MessageError struct {
	Func        string // Function name
	Description string // Human readable description of the issue
}

MessageError describes an issue with a message. An example of some potential issues are messages from the wrong bitmessage network, invalid commands, mismatched checksums, and exceeding max payloads.

This provides a mechanism for the caller to type assert the error to differentiate between general io errors such as io.EOF and issues that resulted from malformed messages.

func NewMessageError 

func NewMessageError(f string, desc string) *MessageError

NewMessageError creates an error for the given function and description.

func (*MessageError) Error 

func (e *MessageError) Error() string

Error satisfies the error interface and prints human-readable errors.

type MsgAddr 

type MsgAddr struct {
	AddrList []*NetAddress
}

MsgAddr implements the Message interface and represents a bitmessage addr message. It is used to provide a list of known active peers on the network. An active peer is considered one that has transmitted a message within the last 3 hours. Nodes which have not transmitted in that time frame should be forgotten. Each message is limited to a maximum number of addresses, which is currently 1000. As a result, multiple messages must be used to relay the full list.

Use the AddAddress function to build up the list of known addresses when sending an addr message to another peer.

func NewMsgAddr 

func NewMsgAddr() *MsgAddr

NewMsgAddr returns a new bitmessage addr message that conforms to the Message interface. See MsgAddr for details.

func (*MsgAddr) AddAddress 

func (msg *MsgAddr) AddAddress(na *NetAddress) error

AddAddress adds a known active peer to the message.

func (*MsgAddr) AddAddresses 

func (msg *MsgAddr) AddAddresses(netAddrs ...*NetAddress) error

AddAddresses adds multiple known active peers to the message.

func (*MsgAddr) ClearAddresses 

func (msg *MsgAddr) ClearAddresses()

ClearAddresses removes all addresses from the message.

func (*MsgAddr) Command 

func (msg *MsgAddr) Command() string

Command returns the protocol command string for the message. This is part of the Message interface implementation.

func (*MsgAddr) Decode 

func (msg *MsgAddr) Decode(r io.Reader) error

Decode decodes r using the bitmessage protocol encoding into the receiver. This is part of the Message interface implementation.

func (*MsgAddr) Encode 

func (msg *MsgAddr) Encode(w io.Writer) error

Encode encodes the receiver to w using the bitmessage protocol encoding. This is part of the Message interface implementation.

func (*MsgAddr) MaxPayloadLength 

func (msg *MsgAddr) MaxPayloadLength() int

MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message interface implementation.

type MsgGetData 

type MsgGetData struct {
	InvList []*InvVect
}

MsgGetData implements the Message interface and represents a bitmessage getdata message. It is used to request data such as messages and broadcasts from another peer. It should be used in response to the inv (MsgInv) message to request the actual data referenced by each inventory vector the receiving peer doesn't already have. Each message is limited to a maximum number of inventory vectors, which is currently 50,000. As a result, multiple messages must be used to request larger amounts of data.

Use the AddInvVect function to build up the list of inventory vectors when sending a getdata message to another peer.

func NewMsgGetData 

func NewMsgGetData() *MsgGetData

NewMsgGetData returns a new bitmessage getdata message that conforms to the Message interface. See MsgGetData for details.

func NewMsgGetDataSizeHint 

func NewMsgGetDataSizeHint(sizeHint uint) *MsgGetData

NewMsgGetDataSizeHint returns a new bitmessage getdata message that conforms to the Message interface. See MsgGetData for details. This function differs from NewMsgGetData in that it allows a default allocation size for the backing array which houses the inventory vector list. This allows callers who know in advance how large the inventory list will grow to avoid the overhead of growing the internal backing array several times when appending large amounts of inventory vectors with AddInvVect. Note that the specified hint is just that - a hint that is used for the default allocation size. Adding more (or less) inventory vectors will still work properly. The size hint is limited to MaxInvPerMsg.

func (*MsgGetData) AddInvVect 

func (msg *MsgGetData) AddInvVect(iv *InvVect) error

AddInvVect adds an inventory vector to the message.

func (*MsgGetData) Command 

func (msg *MsgGetData) Command() string

Command returns the protocol command string for the message. This is part of the Message interface implementation.

func (*MsgGetData) Decode 

func (msg *MsgGetData) Decode(r io.Reader) error

Decode decodes r using the bitmessage protocol encoding into the receiver. This is part of the Message interface implementation.

func (*MsgGetData) Encode 

func (msg *MsgGetData) Encode(w io.Writer) error

Encode encodes the receiver to w using the bitmessage protocol encoding. This is part of the Message interface implementation.

func (*MsgGetData) MaxPayloadLength 

func (msg *MsgGetData) MaxPayloadLength() int

MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message interface implementation.

type MsgInv 

type MsgInv struct {
	InvList []*InvVect
}

MsgInv implements the Message interface and represents a bitmessage inv message. It is used to advertise a peer's known data such as messages and broadcasts through inventory vectors. Each message is limited to a maximum number of inventory vectors, which is currently 50,000.

Use the AddInvVect function to build up the list of inventory vectors when sending an inv message to another peer.

func NewMsgInv 

func NewMsgInv() *MsgInv

NewMsgInv returns a new bitmessage inv message that conforms to the Message interface. See MsgInv for details.

func NewMsgInvSizeHint 

func NewMsgInvSizeHint(sizeHint uint) *MsgInv

NewMsgInvSizeHint returns a new bitmessage inv message that conforms to the Message interface. See MsgInv for details. This function differs from NewMsgInv in that it allows a default allocation size for the backing array which houses the inventory vector list. This allows callers who know in advance how large the inventory list will grow to avoid the overhead of growing the internal backing array several times when appending large amounts of inventory vectors with AddInvVect. Note that the specified hint is just that - a hint that is used for the default allocation size. Adding more (or less) inventory vectors will still work properly. The size hint is limited to MaxInvPerMsg.

func (*MsgInv) AddInvVect 

func (msg *MsgInv) AddInvVect(iv *InvVect) error

AddInvVect adds an inventory vector to the message.

func (*MsgInv) Command 

func (msg *MsgInv) Command() string

Command returns the protocol command string for the message. This is part of the Message interface implementation.

func (*MsgInv) Decode 

func (msg *MsgInv) Decode(r io.Reader) error

Decode decodes r using the bitmessage protocol encoding into the receiver. This is part of the Message interface implementation.

func (*MsgInv) Encode 

func (msg *MsgInv) Encode(w io.Writer) error

Encode encodes the receiver to w using the bitmessage protocol encoding. This is part of the Message interface implementation.

func (*MsgInv) MaxPayloadLength 

func (msg *MsgInv) MaxPayloadLength() int

MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message interface implementation.

type MsgObject 

type MsgObject struct {
	// contains filtered or unexported fields
}

MsgObject implements the Message interface and represents a generic object.

func DecodeMsgObject 

func DecodeMsgObject(obj []byte) (*MsgObject, error)

DecodeMsgObject takes a byte array and turns it into an object message.

func NewMsgObject 

func NewMsgObject(header *ObjectHeader, payload []byte) *MsgObject

NewMsgObject returns a new object message that conforms to the Message interface using the passed parameters and defaults for the remaining fields.

func (*MsgObject) CheckPow 

func (msg *MsgObject) CheckPow(data pow.Data, refTime time.Time) bool

CheckPow checks if the POW that was done for an object message is sufficient. obj is a byte slice containing the object message.

func (*MsgObject) Command 

func (msg *MsgObject) Command() string

Command returns the protocol command string for the message. This is part of the Message interface implementation.

func (*MsgObject) Copy 

func (msg *MsgObject) Copy() *MsgObject

Copy creates a new MsgObject identical to the original after a deep copy.

func (*MsgObject) Decode 

func (msg *MsgObject) Decode(r io.Reader) error

Decode decodes r using the bitmessage protocol encoding into the receiver. This is part of the Message interface implementation.

func (*MsgObject) Encode 

func (msg *MsgObject) Encode(w io.Writer) error

Encode encodes the receiver to w using the bitmessage protocol encoding. This is part of the Message interface implementation.

func (*MsgObject) Header 

func (msg *MsgObject) Header() *ObjectHeader

Header returns the object header.

func (*MsgObject) MaxPayloadLength 

func (msg *MsgObject) MaxPayloadLength() int

MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message interface implementation.

func (*MsgObject) Payload 

func (msg *MsgObject) Payload() []byte

Payload return the object payload of the message.

func (*MsgObject) String 

func (msg *MsgObject) String() string

type MsgPong 

type MsgPong struct{}

MsgPong defines a bitmessage pong message which is used by a peer to ensure that the connection between itself and another peer doesn't time out due to inactivity. It implements the Message interface.

This message has no payload.

func NewMsgPong 

func NewMsgPong() *MsgPong

NewMsgPong returns a new bitmessage verack message that conforms to the Message interface.

func (*MsgPong) Command 

func (msg *MsgPong) Command() string

Command returns the protocol command string for the message. This is part of the Message interface implementation.

func (*MsgPong) Decode 

func (msg *MsgPong) Decode(r io.Reader) error

Decode decodes r using the bitmessage protocol encoding into the receiver. This is part of the Message interface implementation.

func (*MsgPong) Encode 

func (msg *MsgPong) Encode(w io.Writer) error

Encode encodes the receiver to w using the bitmessage protocol encoding. This is part of the Message interface implementation.

func (*MsgPong) MaxPayloadLength 

func (msg *MsgPong) MaxPayloadLength() int

MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message interface implementation.

type MsgVerAck 

type MsgVerAck struct{}

MsgVerAck defines a bitmessage verack message which is used for a peer to acknowledge a version message (MsgVersion) after it has used the information to negotiate parameters. It implements the Message interface.

This message has no payload.

func NewMsgVerAck 

func NewMsgVerAck() *MsgVerAck

NewMsgVerAck returns a new bitmessage verack message that conforms to the Message interface.

func (*MsgVerAck) Command 

func (msg *MsgVerAck) Command() string

Command returns the protocol command string for the message. This is part of the Message interface implementation.

func (*MsgVerAck) Decode 

func (msg *MsgVerAck) Decode(r io.Reader) error

Decode decodes r using the bitmessage protocol encoding into the receiver. This is part of the Message interface implementation.

func (*MsgVerAck) Encode 

func (msg *MsgVerAck) Encode(w io.Writer) error

Encode encodes the receiver to w using the bitmessage protocol encoding. This is part of the Message interface implementation.

func (*MsgVerAck) MaxPayloadLength 

func (msg *MsgVerAck) MaxPayloadLength() int

MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message interface implementation.

type MsgVersion 

type MsgVersion struct {
	// Version of the protocol the node is using.
	ProtocolVersion int32

	// Bitfield which identifies the enabled services.
	Services ServiceFlag

	// Time the message was generated. This is encoded as an int64 on the wire.
	Timestamp time.Time

	// Address of the remote peer.
	AddrYou *NetAddress

	// Address of the local peer.
	AddrMe *NetAddress

	// Unique value associated with message that is used to detect self
	// connections.
	Nonce uint64

	// The user agent that generated messsage. This is a encoded as a varString
	// on the wire.  This has a max length of MaxUserAgentLen.
	UserAgent string

	// The stream numbers of interest.
	StreamNumbers []uint32
}

MsgVersion implements the Message interface and represents a bitmessage version message. It is used for a peer to advertise itself as soon as an outbound connection is made. The remote peer then uses this information along with its own to negotiate. The remote peer must then respond with a version message of its own containing the negotiated values followed by a verack message (MsgVerAck). This exchange must take place before any further communication is allowed to proceed.

func NewMsgVersion 

func NewMsgVersion(me *NetAddress, you *NetAddress, nonce uint64, streams []uint32) *MsgVersion

NewMsgVersion returns a new bitmessage version message that conforms to the Message interface using the passed parameters and defaults for the remaining fields.

func NewMsgVersionFromConn 

func NewMsgVersionFromConn(conn net.Conn, nonce uint64, currentStream uint32, allStreams []uint32) (*MsgVersion, error)

NewMsgVersionFromConn is a convenience function that extracts the remote and local address from conn and returns a new bitmessage version message that conforms to the Message interface. See NewMsgVersion.

func (*MsgVersion) AddService 

func (msg *MsgVersion) AddService(service ServiceFlag)

AddService adds service as a supported service by the peer generating the message.

func (*MsgVersion) AddUserAgent 

func (msg *MsgVersion) AddUserAgent(name string, version string,
	comments ...string) error

AddUserAgent adds a user agent to the user agent string for the version message. The version string is not defined to any strict format, although it is recommended to use the form "major.minor.revision" e.g. "2.6.41".

func (*MsgVersion) Command 

func (msg *MsgVersion) Command() string

Command returns the protocol command string for the message. This is part of the Message interface implementation.

func (*MsgVersion) Decode 

func (msg *MsgVersion) Decode(r io.Reader) error

Decode decodes r using the bitmessage protocol encoding into the receiver. This is part of the Message interface implementation.

func (*MsgVersion) Encode 

func (msg *MsgVersion) Encode(w io.Writer) error

Encode encodes the receiver to w using the bitmessage protocol encoding. This is part of the Message interface implementation.

func (*MsgVersion) HasService 

func (msg *MsgVersion) HasService(service ServiceFlag) bool

HasService returns whether the specified service is supported by the peer that generated the message.

func (*MsgVersion) MaxPayloadLength 

func (msg *MsgVersion) MaxPayloadLength() int

MaxPayloadLength returns the maximum length the payload can be for the receiver. This is part of the Message interface implementation.

type NetAddress 

type NetAddress struct {
	// Last time the address was seen.
	Timestamp time.Time

	// Stream that the address is a member of.
	Stream uint32

	// Bitfield which identifies the services supported by the address.
	Services ServiceFlag

	// IP address of the peer.
	IP net.IP

	// Port the peer is using.  This is encoded in big endian on the wire
	// which differs from most everything else.
	Port uint16
}

NetAddress defines information about a peer on the network including the time it was last seen, the services it supports, its IP address, and port.

func NewNetAddress 

func NewNetAddress(addr net.Addr, stream uint32, services ServiceFlag) (*NetAddress, error)

NewNetAddress returns a new NetAddress using the provided TCP address and supported services with defaults for the remaining fields.

Note that addr must be a net.TCPAddr. An ErrInvalidNetAddr is returned if it is not.

func NewNetAddressIPPort 

func NewNetAddressIPPort(ip net.IP, port uint16, stream uint32, services ServiceFlag) *NetAddress

NewNetAddressIPPort returns a new NetAddress using the provided IP, port, stream and supported services with Timestamp being time.Now().

func (*NetAddress) AddService 

func (na *NetAddress) AddService(service ServiceFlag)

AddService adds service as a supported service by the peer generating the message.

func (*NetAddress) HasService 

func (na *NetAddress) HasService(service ServiceFlag) bool

HasService returns whether the specified service is supported by the address.

func (*NetAddress) SetAddress 

func (na *NetAddress) SetAddress(ip net.IP, port uint16)

SetAddress is a convenience function to set the IP address and port in one call.

type ObjectHeader 

type ObjectHeader struct {
	Nonce pow.Nonce

	ObjectType   ObjectType
	Version      uint64
	StreamNumber uint64
	// contains filtered or unexported fields
}

ObjectHeader is a representation of the header of the object message as defined in the Bitmessage protocol.

func DecodeObjectHeader 

func DecodeObjectHeader(r io.Reader) (*ObjectHeader, error)

DecodeObjectHeader decodes the object header from given reader. Object header consists of Nonce, ExpiresTime, ObjectType, Version and Stream, in that order. Read Protocol Specifications for more information.

func NewObjectHeader 

func NewObjectHeader(
	Nonce pow.Nonce,
	Expiration time.Time,
	ObjectType ObjectType,
	Version uint64,
	StreamNumber uint64) *ObjectHeader

NewObjectHeader creates an ObjectHeader from the given parameters.

func (*ObjectHeader) Encode 

func (h *ObjectHeader) Encode(w io.Writer) error

Encode encodes the object header to the given writer. Object header consists of Nonce, ExpiresTime, ObjectType, Version and Stream, in that order. Read Protocol Specifications for more information.

func (*ObjectHeader) EncodeForSigning 

func (h *ObjectHeader) EncodeForSigning(w io.Writer) error

EncodeForSigning encodes the object header used for signing. It consists of everything in the normal object header except for nonce.

func (*ObjectHeader) Expiration 

func (h *ObjectHeader) Expiration() time.Time

Expiration provides the expration time.

func (*ObjectHeader) String 

func (h *ObjectHeader) String() string

String returns the header in a human-readible string form.

type ObjectType 

type ObjectType uint32

ObjectType represents the type of object than an object message contains. Objects in bitmessage are things on the network that get propagated. This can include requests/responses for pubkeys, messages and broadcasts. 

const (
	ObjectTypeGetPubKey    ObjectType = 0
	ObjectTypePubKey       ObjectType = 1
	ObjectTypeMsg          ObjectType = 2
	ObjectTypeBroadcast    ObjectType = 3
	HighestKnownObjectType ObjectType = ObjectTypeBroadcast
)

There are five types of objects in bitmessage.

  • GetPubKey: requests for public keys.
  • PubKey: public keys sent in response.
  • Msg: bitmessage messages.
  • Broadcast: broadcast messages.

An ObjectType can also take on other values representing unknown message types.

func (ObjectType) String 

func (t ObjectType) String() string

type PubKey 

type PubKey [PubKeySize]byte

PubKey is used in several of the bitmessage messages and common structures. The first 32 bytes contain the X value and the other 32 contain the Y value.

func NewPubKey 

func NewPubKey(newHash []byte) (*PubKey, error)

NewPubKey returns a new PubKey from a byte slice. An error is returned if the number of bytes passed in is not PubKeySize.

func NewPubKeyFromStr 

func NewPubKeyFromStr(pubkey string) (*PubKey, error)

NewPubKeyFromStr creates a PubKey from a hash string. The string should be the hexadecimal string of the PubKey.

func (*PubKey) Bytes 

func (pubkey *PubKey) Bytes() []byte

Bytes returns the bytes which represent the hash as a byte slice.

func (*PubKey) IsEqual 

func (pubkey *PubKey) IsEqual(target *PubKey) bool

IsEqual returns true if target is the same as the pubkey.

func (PubKey) String 

func (pubkey PubKey) String() string

String returns the PubKey as a hexadecimal string.

func (*PubKey) ToBtcec 

func (pubkey *PubKey) ToBtcec() (key *btcec.PublicKey, err error)

ToBtcec converts PubKey to btcec.PublicKey so that it can be used for cryptographic operations like encryption/signature verification.

type ServiceFlag 

type ServiceFlag uint64

ServiceFlag identifies services supported by a bitmessage peer. 

const (
	// SFNodeNetwork is a flag used to indicate a peer is a full node.
	SFNodeNetwork ServiceFlag = 1 << iota
)

func (ServiceFlag) String 

func (f ServiceFlag) String() string

String returns the ServiceFlag in human-readable form.

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