gophertun

type Codec interface {
	Decode(buf []byte) error
	Encode() ([]byte, error)
	NextLayer() Codec
}

type CodecARP struct {
	HardwareType       uint16
	ProtocolType       EtherType
	HardwareSize       uint8
	ProtocolSize       uint8
	Opcode             uint16
	SenderHardwareAddr net.HardwareAddr
	SenderProtocolAddr net.IP
	TargetHardwareAddr net.HardwareAddr
	TargetProtocolAddr net.IP
	Extra              []byte
}

type CodecEthernet struct {
	Destination net.HardwareAddr
	Source      net.HardwareAddr
	Type        EtherType
	Payload     Codec
}

type CodecICMP struct {
	Type     uint8
	Code     uint8
	Checksum uint16
	Omni     uint32
	Payload  Codec
}

type CodecICMPv6 struct {
	Type     uint8
	Code     uint8
	Checksum uint16
	Omni     uint32
	Payload  Codec
	// contains filtered or unexported fields
}

type CodecIPv4 struct {
	Version        uint8
	HeaderLength   uint8 // raw * 4
	DSCP           uint8
	ECN            uint8
	TotalLength    uint16
	Identification uint16
	Flags          uint8
	FragmentOffset uint16 // raw * 8
	TTL            uint8
	Protocol       uint8
	HeaderChecksum uint16
	Source         net.IP
	Destination    net.IP
	Extra1         []byte
	Payload        Codec
	Extra2         []byte
}

type CodecIPv6 struct {
	Version       uint8
	DSCP          uint8
	ECN           uint8
	Flowlabel     uint32
	PayloadLength uint16
	NextHeader    uint8
	HopLimit      uint8
	Source        net.IP
	Destination   net.IP
	Payload       Codec
	Extra         []byte
}

type CodecIPv6Fragment struct {
	NextHeader     uint8
	Reserved1      uint8
	FragmentOffset uint16 // raw * 8
	Reserved2      uint8
	MoreFragment   bool
	Identification uint32
	Payload        Codec
	// contains filtered or unexported fields
}

type CodecIPv6HopByHop struct {
	NextHeader   uint8
	HeaderLength uint16 // raw * 8 + 8
	FirstOption  *CodecIPv6HopByHopOption
	Payload      Codec
	// contains filtered or unexported fields
}

type CodecIPv6HopByHopOption struct {
	Type       uint8
	DataLength uint8
	Data       Codec
	NextOption *CodecIPv6HopByHopOption
}

type CodecRaw struct {
	Payload []byte
	Err     error
}

type EtherType uint16

type IPAddress struct {
	Net  *net.IPNet
	Peer *net.IPNet
}

type Packet struct {
	Format    PayloadFormat
	EtherType EtherType
	Payload   []byte
	Extra     []byte
}

type PayloadFormat int

type TunTapConfig struct {
	NameHint              string
	AllowNameSuffix       bool
	PreferredNativeFormat PayloadFormat
	ExtraFlags            uint32
}

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

type Tunnel interface {
	AddIPAddresses(addresses []*IPAddress) (int, error)
	Close() error
	MTU() (int, error)
	Name() (string, error)
	NativeFormat() PayloadFormat
	Open(outputFormat PayloadFormat) error
	OutputFormat() PayloadFormat
	RawFile() (*os.File, error)
	Read() (*Packet, error)
	SetMTU(mtu int) error
	Write(packet *Packet, pmtud bool) error
}

type TunnelConfig interface {
	Create() (Tunnel, error)
}

type VxlanConfig struct {
	VxlanConn           net.PacketConn
	VxlanNetworkID      uint32
	VxlanTunnelEndpoint net.Addr
}

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