packet

package
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 Go to latest Published: Nov 8, 2021 License: MIT Imports: 6 Imported by: 0

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Index

Constants

View Source 
const (
	MTU            = 1420
	MaxContentSize = 1500
)
View Source 
const (
	TCPHeaderLength = 2

	PacketTypeLength                  = 1
	PacketIPv4Length                  = 4
	PacketIdLength                    = 16
	PacketPongAesDataLength           = 32
	PacketPongAesHmacLength           = 64
	PacketRelayControlPingTokenLength = 32

	PingPacketLength           = PacketTypeLength + PacketIPv4Length + PacketIdLength
	PongPacketLength           = PacketTypeLength + PacketIdLength
	PongAesPacketLength        = PacketTypeLength + PacketIdLength + PacketPongAesDataLength + PacketPongAesHmacLength
	ExchangePacketHeaderLength = PacketTypeLength + PacketIPv4Length
	DataPacketHeaderLength     = PacketTypeLength + PacketIPv4Length
	RelayPacketHeaderLength    = PacketTypeLength + PacketIPv4Length

	RelayPingPacketLength           = RelayPacketHeaderLength + PingPacketLength
	RelayPongPacketLength           = RelayPacketHeaderLength + PongPacketLength
	RelayPongAesPacketLength        = RelayPacketHeaderLength + PongAesPacketLength
	RelayExchangePacketHeaderLength = RelayPacketHeaderLength + ExchangePacketHeaderLength
	RelayDataPacketHeaderLength     = RelayPacketHeaderLength + DataPacketHeaderLength

	RelayControlPingPacketLength = PacketTypeLength + PacketIdLength + PacketRelayControlPingTokenLength
	RelayControlPongPacketLength = PacketTypeLength + PacketIdLength
)

Variables

This section is empty.

Functions

This section is empty.

Types

type DataPacket 

type DataPacket Packet

func (DataPacket) Data 

func (p DataPacket) Data() []byte

func (DataPacket) IP 

func (p DataPacket) IP() net.IP

func (DataPacket) SetData 

func (p DataPacket) SetData(data []byte)

func (DataPacket) SetIP 

func (p DataPacket) SetIP(ip net.IP)

func (DataPacket) Valid 

func (p DataPacket) Valid() bool

type ExchangePacket 

type ExchangePacket Packet

func (ExchangePacket) Data 

func (p ExchangePacket) Data() []byte

func (ExchangePacket) IP 

func (p ExchangePacket) IP() net.IP

func (ExchangePacket) SetData 

func (p ExchangePacket) SetData(data []byte)

func (ExchangePacket) SetIP 

func (p ExchangePacket) SetIP(ip net.IP)

func (ExchangePacket) Valid 

func (p ExchangePacket) Valid() bool

type Packet 

type Packet []byte

func (Packet) Copy 

func (p Packet) Copy() Packet

func (Packet) CopyTo 

func (p Packet) CopyTo(n []byte) Packet

func (Packet) SetType 

func (p Packet) SetType(t PacketType)

func (Packet) Type 

func (p Packet) Type() PacketType

func (Packet) Valid 

func (p Packet) Valid() bool

type PacketConstructor 

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

func NewConstructor 

func NewConstructor() *PacketConstructor

func NewConstructorWithBuffer 

func NewConstructorWithBuffer(buf []byte) *PacketConstructor

func (*PacketConstructor) Buffer 

func (p *PacketConstructor) Buffer() []byte

func (*PacketConstructor) MakeDataPacket 

func (c *PacketConstructor) MakeDataPacket(data []byte, ip net.IP) DataPacket

func (*PacketConstructor) MakeDataPacketSize 

func (c *PacketConstructor) MakeDataPacketSize(size int) DataPacket

func (*PacketConstructor) MakeExchangePacket 

func (c *PacketConstructor) MakeExchangePacket(data []byte, ip net.IP) ExchangePacket

func (*PacketConstructor) MakePingPacket 

func (c *PacketConstructor) MakePingPacket(id uuid.UUID, ip net.IP) PingPacket

func (*PacketConstructor) MakePongAesPacket 

func (c *PacketConstructor) MakePongAesPacket(id uuid.UUID, data []byte, hmac []byte) PongAesPacket

func (*PacketConstructor) MakePongPacket 

func (c *PacketConstructor) MakePongPacket(id uuid.UUID) PongPacket

func (*PacketConstructor) MakeRelayControlPingPacket 

func (c *PacketConstructor) MakeRelayControlPingPacket(id uuid.UUID, token []byte) RelayControlPingPacket

func (*PacketConstructor) MakeRelayControlPongPacket 

func (c *PacketConstructor) MakeRelayControlPongPacket(id uuid.UUID) RelayControlPongPacket

func (*PacketConstructor) MakeRelayDataPacket 

func (c *PacketConstructor) MakeRelayDataPacket(data []byte, ip net.IP, destIP net.IP) RelayPacket

func (*PacketConstructor) MakeRelayDataPacketSize 

func (c *PacketConstructor) MakeRelayDataPacketSize(size int, destIP net.IP) RelayPacket

func (*PacketConstructor) MakeRelayExchangePacket 

func (c *PacketConstructor) MakeRelayExchangePacket(data []byte, ip net.IP, destIP net.IP) RelayPacket

func (*PacketConstructor) MakeRelayPingPacket 

func (c *PacketConstructor) MakeRelayPingPacket(id uuid.UUID, ip net.IP, destIP net.IP) RelayPacket

func (*PacketConstructor) MakeRelayPongAesPacket 

func (c *PacketConstructor) MakeRelayPongAesPacket(id uuid.UUID, data []byte, hmac []byte, destIP net.IP) RelayPacket

func (*PacketConstructor) MakeRelayPongPacket 

func (c *PacketConstructor) MakeRelayPongPacket(id uuid.UUID, destIP net.IP) RelayPacket

func (*PacketConstructor) ReadTCP 

func (p *PacketConstructor) ReadTCP(read io.Reader) error

func (*PacketConstructor) ReadUDP 

func (p *PacketConstructor) ReadUDP(read netconn.UDPConn) (*net.UDPAddr, error)

func (*PacketConstructor) SetSize 

func (p *PacketConstructor) SetSize(size uint16)

func (*PacketConstructor) Size 

func (t *PacketConstructor) Size() uint16

func (*PacketConstructor) ToPacket 

func (p *PacketConstructor) ToPacket() Packet

func (*PacketConstructor) ToTCP 

func (p *PacketConstructor) ToTCP() TcpPacket

func (*PacketConstructor) ToUDP 

func (p *PacketConstructor) ToUDP() UdpPacket

type PacketType 

type PacketType byte
const (
	PacketTypeInvalid PacketType = iota
	PacketTypeData
	PacketTypePing
	PacketTypePong
	PacketTypePongAes
	PacketTypeExchange
	PacketTypeRelay

	// used to register nodes on relay servers
	PacketTypeRelayControlPing
	PacketTypeRelayControlPong
)

type PingPacket 

type PingPacket Packet

func (PingPacket) ID 

func (p PingPacket) ID() uuid.UUID

func (PingPacket) IP 

func (p PingPacket) IP() net.IP

func (PingPacket) SetID 

func (p PingPacket) SetID(id uuid.UUID)

func (PingPacket) SetIP 

func (p PingPacket) SetIP(ip net.IP)

func (PingPacket) Valid 

func (p PingPacket) Valid() bool

type PongAesPacket 

type PongAesPacket Packet

func (PongAesPacket) Data 

func (p PongAesPacket) Data() []byte

func (PongAesPacket) Hmac 

func (p PongAesPacket) Hmac() []byte

func (PongAesPacket) ID 

func (p PongAesPacket) ID() uuid.UUID

func (PongAesPacket) SetData 

func (p PongAesPacket) SetData(data []byte)

func (PongAesPacket) SetHmac 

func (p PongAesPacket) SetHmac(hmac []byte)

func (PongAesPacket) SetID 

func (p PongAesPacket) SetID(id uuid.UUID)

func (PongAesPacket) Valid 

func (p PongAesPacket) Valid() bool

type PongPacket 

type PongPacket Packet

func (PongPacket) ID 

func (p PongPacket) ID() uuid.UUID

func (PongPacket) SetID 

func (p PongPacket) SetID(id uuid.UUID)

func (PongPacket) Valid 

func (p PongPacket) Valid() bool

type RelayControlPingPacket 

type RelayControlPingPacket Packet

func (RelayControlPingPacket) ID 

func (p RelayControlPingPacket) ID() uuid.UUID

func (RelayControlPingPacket) SetID 

func (p RelayControlPingPacket) SetID(id uuid.UUID)

func (RelayControlPingPacket) SetToken 

func (p RelayControlPingPacket) SetToken(token []byte)

func (RelayControlPingPacket) Token 

func (p RelayControlPingPacket) Token() []byte

func (RelayControlPingPacket) Valid 

func (p RelayControlPingPacket) Valid() bool

type RelayControlPongPacket 

type RelayControlPongPacket Packet

func (RelayControlPongPacket) ID 

func (p RelayControlPongPacket) ID() uuid.UUID

func (RelayControlPongPacket) SetID 

func (p RelayControlPongPacket) SetID(id uuid.UUID)

func (RelayControlPongPacket) Valid 

func (p RelayControlPongPacket) Valid() bool

type RelayPacket 

type RelayPacket Packet

func (RelayPacket) DestIP 

func (p RelayPacket) DestIP() net.IP

func (RelayPacket) SetDestIP 

func (p RelayPacket) SetDestIP(ip net.IP)

func (RelayPacket) SetType 

func (p RelayPacket) SetType(t PacketType)

func (RelayPacket) ToPacket 

func (p RelayPacket) ToPacket() Packet

func (RelayPacket) Type 

func (p RelayPacket) Type() PacketType

func (RelayPacket) Valid 

func (p RelayPacket) Valid() bool

type RelayPacketConstructor 

type RelayPacketConstructor struct {
	Relay    *PacketConstructor
	Standard *PacketConstructor
}

func NewRelayConstructor 

func NewRelayConstructor() *RelayPacketConstructor

type TcpPacket 

type TcpPacket []byte

func (TcpPacket) Size 

func (t TcpPacket) Size() uint16

func (TcpPacket) ToPacket 

func (t TcpPacket) ToPacket() Packet

type UdpPacket 

type UdpPacket []byte

func (UdpPacket) ToPacket 

func (t UdpPacket) ToPacket() Packet

Source Files

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