vnode

package
v2.6.1+incompatible Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Oct 29, 2019 License: GPL-3.0 Imports: 11 Imported by: 14

Documentation

Index

Examples

Constants

View Source 
const DefaultPort = 8483
View Source 
const IDBits = idBytes * 8
View Source 
const MaxHostLength = 1<<6 - 1
View Source 
const PortLength = 2

Variables

This section is empty.

Functions

func Distance 

func Distance(a, b NodeID) uint

Distance is bit-count minus the common bits, from left to right continuously, between a and b. eg: 

a: 0000 1111
b: 0100 0011
Distance(a, b) == 8 - 1 // true

Types

type EndPoint 

type EndPoint struct {
	Host []byte
	Port int
	Typ  HostType
}

EndPoint is the net address format `IP:Port` or `domain:Port`

func ParseEndPoint 

func ParseEndPoint(host string) (e EndPoint, err error)

ParseEndPoint parse a string to EndPoint host MUST format one of the following styles: 1. [IP]:port 2. [IP] 3. hostname:port 4. hostname 5. IPv4:port 6. IPv4

func (*EndPoint) Deserialize 

func (e *EndPoint) Deserialize(buf []byte) (err error)

Deserialize parse []byte to EndPoint, the memory EndPoint should be allocate before.

func (*EndPoint) Equal 

func (e *EndPoint) Equal(e2 *EndPoint) bool

func (EndPoint) Hostname 

func (e EndPoint) Hostname() string

Hostname return `domain` or `IPv4` or `[IPv6]`

func (EndPoint) Length 

func (e EndPoint) Length() (n int)

Length return the serialized []byte length

func (EndPoint) MarshalJSON 

func (e EndPoint) MarshalJSON() ([]byte, error)
Example 
var addr = "127.0.0.1:8080"
ep, err := ParseEndPoint(addr)
if err != nil {
	panic(err)
}

data, err := ep.MarshalJSON()
if err != nil {
	panic(err)
}

fmt.Printf("%s\n", data)

Output:

"127.0.0.1:8080"

func (EndPoint) MarshalText 

func (e EndPoint) MarshalText() (text []byte, err error)

func (EndPoint) Serialize 

func (e EndPoint) Serialize() (buf []byte, err error)

Serialize not use ProtoBuffers, because we should ensure the neighbors message is short than 1200 bytes but PB is variable-length-encode, the length of encoded []byte is unknown before encode.

EndPoint serialize structure. 

+----------+----------------------+-------------+
|   Meta   |         Host         |  Port(opt)  |
|  1 byte  |      0 ~ 63 bytes    |   2 bytes   |
+----------+----------------------+-------------+

Meta structure 

+---------------------+--------+--------+
|     Host Length     |  Host  |  Port  |
|       6 bits        |  1 bit |  1 bit |
+---------------------+--------+--------+
Host Length is the byte-count of Host
Host: 0 IP. 1 Domain
Port: 0 no IP, mean DefaultPort. 1 has 2 bytes Port

func (EndPoint) String 

func (e EndPoint) String() string

String return domain:port or IPv4:port or [IPv6]:port

func (*EndPoint) UnmarshalJSON 

func (e *EndPoint) UnmarshalJSON(data []byte) error

func (*EndPoint) UnmarshalText 

func (e *EndPoint) UnmarshalText(text []byte) (err error)

type HostType 

type HostType byte
const (
	HostIPv4   HostType = 1
	HostIPv6   HostType = 2
	HostIP     HostType = 3
	HostDomain HostType = 4
)

func (HostType) Is 

func (ht HostType) Is(ht2 HostType) bool
Example 
fmt.Println(HostIPv4.Is(HostIPv4))
fmt.Println(HostIPv6.Is(HostIPv6))
fmt.Println(HostIP.Is(HostIP))
fmt.Println(HostDomain.Is(HostDomain))
fmt.Println(HostIPv4.Is(HostIP))
fmt.Println(HostIPv6.Is(HostIP))
fmt.Println(HostIPv4.Is(HostIPv6))
fmt.Println(HostIPv6.Is(HostIPv4))
fmt.Println(HostIPv4.Is(HostDomain))
fmt.Println(HostIPv6.Is(HostDomain))
fmt.Println(HostDomain.Is(HostIP))
fmt.Println(HostIP.Is(HostDomain))

Output:

true
true
true
true
true
true
false
false
false
false
false
false

type Node 

type Node struct {
	ID       NodeID   `json:"id"` // ID is the unique node identity
	EndPoint EndPoint `json:"address"`
	Net      int      `json:"net"` // Net is the network this node belongs
	Ext      []byte   `json:"ext"` // Ext can be arbitrary data, will be sent to other nodes
}

Node mean a node in vite P2P network

func MockNode 

func MockNode(domain bool, ext bool) *Node

func ParseNode 

func ParseNode(u string) (n *Node, err error)

ParseNode parse a string to Node, return error if missing Hostname/IP.

func (Node) Address 

func (n Node) Address() string

Address is formatted `domain:Port` or `IP:Port`

func (*Node) Deserialize 

func (n *Node) Deserialize(data []byte) (err error)

Deserialize bytes to Node through protobuf, Node should be constructed before Deserialize. 

// for example
var n = new(Node)
err := n.Deserialize(someBuf)

func (*Node) Equal 

func (n *Node) Equal(n2 *Node) bool

func (*Node) Serialize 

func (n *Node) Serialize() ([]byte, error)

Serialize a Node to bytes through protobuf

func (Node) String 

func (n Node) String() (str string)

String marshal node to string, domain or IP is mandatory, other fields are optional. looks like: 

<hex_node_id>@domain:port/net
<hex_node_id>@IPv4:port/net
<hex_node_id>@[IPv6]:port/net

missing fields will parse to default value. 

NodeID default is Zero
port default is `DefaultPort`
net default is 0

the field `Ext` will not be included in the encoded string

type NodeID 

type NodeID [IDBits / 8]byte

NodeID use to mark node, and build a structural network 

var ZERO NodeID

ZERO is the zero-value of NodeID type

func Bytes2NodeID 

func Bytes2NodeID(buf []byte) (id NodeID, err error)

Bytes2NodeID turn a slice to NodeID

func Hex2NodeID 

func Hex2NodeID(str string) (id NodeID, err error)

Hex2NodeID parse a hex coded string to NodeID

func RandFromDistance 

func RandFromDistance(id NodeID, d uint) (rid NodeID)

RandFromDistance will generate a random NodeID which satisfy `Distance(id, rid) == d`

func RandomNodeID 

func RandomNodeID() (id NodeID)

RandomNodeID return a random NodeID, easy to test

func (NodeID) Brief 

func (id NodeID) Brief() string

Brief return the first 8 chars of id.String()

func (NodeID) Bytes 

func (id NodeID) Bytes() []byte

Bytes return bytes slice copy of the origin NodeID. So modify the result cannot effect the origin NodeID.

Example 
var id = RandomNodeID()
var id2 = id

copy(id.Bytes(), ZERO.Bytes())
fmt.Println(id == ZERO)
id.Bytes()[0] = 0
fmt.Println(id == id2)

Output:

false
true

func (NodeID) IsZero 

func (id NodeID) IsZero() bool

IsZero validate whether a NodeID is zero-value

func (NodeID) MarshalJSON 

func (id NodeID) MarshalJSON() ([]byte, error)
Example 
var hex = "864c763b198f7234e90e25c935c77f84866def8590afec4af1545ca2e45ca926"
id, err := Hex2NodeID(hex)
if err != nil {
	panic(err)
}

data, err := id.MarshalJSON()
if err != nil {
	panic(err)
}

fmt.Printf("%s\n", data)

Output:

"864c763b198f7234e90e25c935c77f84866def8590afec4af1545ca2e45ca926"

func (NodeID) MarshalText 

func (id NodeID) MarshalText() (text []byte, err error)

func (NodeID) String 

func (id NodeID) String() string

String return a hex coded string of NodeID

func (*NodeID) UnmarshalJSON 

func (id *NodeID) UnmarshalJSON(data []byte) error

func (*NodeID) UnmarshalText 

func (id *NodeID) UnmarshalText(text []byte) (err error)

type NodeMode 

type NodeMode byte

NodeMode mean the level of a node in the current hierarchy Core nodes works on the highest level, usually are producers Relay nodes usually are the standby producers, and partial full nodes (like static nodes) Regular nodes usually are the full nodes Edge nodes usually are the light nodes 

const (
	Edge NodeMode = 1 << iota
	Regular
	Relay
	Core
)

func (NodeMode) String 

func (n NodeMode) String() string

type PEndPoint 

type PEndPoint struct {
	Host                 []byte   `protobuf:"bytes,1,opt,name=host,proto3" json:"host,omitempty"`
	Port                 int32    `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
	HostType             int32    `protobuf:"varint,3,opt,name=hostType,proto3" json:"hostType,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

func (*PEndPoint) Descriptor 

func (*PEndPoint) Descriptor() ([]byte, []int)

func (*PEndPoint) GetHost 

func (m *PEndPoint) GetHost() []byte

func (*PEndPoint) GetHostType 

func (m *PEndPoint) GetHostType() int32

func (*PEndPoint) GetPort 

func (m *PEndPoint) GetPort() int32

func (*PEndPoint) ProtoMessage 

func (*PEndPoint) ProtoMessage()

func (*PEndPoint) Reset 

func (m *PEndPoint) Reset()

func (*PEndPoint) String 

func (m *PEndPoint) String() string

func (*PEndPoint) XXX_DiscardUnknown 

func (m *PEndPoint) XXX_DiscardUnknown()

func (*PEndPoint) XXX_Marshal 

func (m *PEndPoint) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*PEndPoint) XXX_Merge 

func (m *PEndPoint) XXX_Merge(src proto.Message)

func (*PEndPoint) XXX_Size 

func (m *PEndPoint) XXX_Size() int

func (*PEndPoint) XXX_Unmarshal 

func (m *PEndPoint) XXX_Unmarshal(b []byte) error

type PNode 

type PNode struct {
	Id                   []byte   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
	Hostname             []byte   `protobuf:"bytes,2,opt,name=hostname,proto3" json:"hostname,omitempty"`
	HostType             uint32   `protobuf:"varint,3,opt,name=hostType,proto3" json:"hostType,omitempty"`
	Port                 uint32   `protobuf:"varint,4,opt,name=port,proto3" json:"port,omitempty"`
	Net                  uint32   `protobuf:"varint,5,opt,name=net,proto3" json:"net,omitempty"`
	Ext                  []byte   `protobuf:"bytes,6,opt,name=ext,proto3" json:"ext,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

func (*PNode) Descriptor 

func (*PNode) Descriptor() ([]byte, []int)

func (*PNode) GetExt 

func (m *PNode) GetExt() []byte

func (*PNode) GetHostType 

func (m *PNode) GetHostType() uint32

func (*PNode) GetHostname 

func (m *PNode) GetHostname() []byte

func (*PNode) GetId 

func (m *PNode) GetId() []byte

func (*PNode) GetNet 

func (m *PNode) GetNet() uint32

func (*PNode) GetPort 

func (m *PNode) GetPort() uint32

func (*PNode) ProtoMessage 

func (*PNode) ProtoMessage()

func (*PNode) Reset 

func (m *PNode) Reset()

func (*PNode) String 

func (m *PNode) String() string

func (*PNode) XXX_DiscardUnknown 

func (m *PNode) XXX_DiscardUnknown()

func (*PNode) XXX_Marshal 

func (m *PNode) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*PNode) XXX_Merge 

func (m *PNode) XXX_Merge(src proto.Message)

func (*PNode) XXX_Size 

func (m *PNode) XXX_Size() int

func (*PNode) XXX_Unmarshal 

func (m *PNode) XXX_Unmarshal(b []byte) error

Source Files

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