phys

type ChecksumFixer ¶

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

ChecksumFixer is an implementation of `DuplexEthernetStream` that wraps another `DuplexEthernetStream` but recalculates TCP/IP checksums

func NewChecksumFixer(stream DuplexEthernetStream) *ChecksumFixer

func (cf *ChecksumFixer) Close()

func (cf *ChecksumFixer) ReadPacketData() ([]byte, gopacket.CaptureInfo, error)

func (cf *ChecksumFixer) WritePacketData(frame []byte) error

type DuplexEthernetStream ¶

type DuplexEthernetStream interface {
	gopacket.PacketDataSource
	PacketDataSink
}

DuplexEthernetStream extends gopacket.PacketDataSource to an interface where packets can be both read and written.

type Framer ¶

type Framer interface {
	Frame(dest net.HardwareAddr, packet *ipx.Packet) ([]gopacket.SerializableLayer, error)
	Unframe(eth *layers.Ethernet, layers []gopacket.Layer) ([]byte, bool)
	Name() string
}

func FramingTypeFlag(name, usage string) *Framer

type PacketDataSink ¶

type PacketDataSink interface {
	WritePacketData([]byte) error
	Close()
}

PacketDataSink is the complement to gopacket.PacketDataSource: the WritePacketData method implemented by gopacket's pcap.Handle that allows packets to be written to an output.

type PcapgoDataSink ¶

type PcapgoDataSink interface {
	WritePacket(ci gopacket.CaptureInfo, data []byte) error
}

PcapgoDataSink is the packet writing interface implemented by the gopacket/pcapgo writer types.

type Phys ¶

type Phys struct {
	*Sink
	// contains filtered or unexported fields
}

Phys is an implementation of ipx.ReadWriteCloser that reads and writes IPX packets from a physical network interface.

func NewPhys(stream DuplexEthernetStream, framer Framer) *Phys

func (p *Phys) Close() error

func (p *Phys) ReadPacket(ctx context.Context) (*ipx.Packet, error)

func (p *Phys) Run() error

type Sink ¶

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

Sink is an implementation of ipx.WriteCloser that frames IPX packets and writes them to a physical network interface.

func NewPcapgoSink(pds PcapgoDataSink, framer Framer) *Sink

func NewSink(pds PacketDataSink, framer Framer) *Sink

func (s *Sink) Close() error

func (s *Sink) WritePacket(packet *ipx.Packet) error

type SlirpConnection ¶

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

func MakeSlirp() (*SlirpConnection, error)

func (c *SlirpConnection) Close()

func (c *SlirpConnection) ReadPacketData() ([]byte, gopacket.CaptureInfo, error)

func (c *SlirpConnection) WritePacketData(buf []byte) error

type SlirpProcess ¶

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

func (c *SlirpProcess) CleanupSocketFiles()

func (c *SlirpProcess) Close() error

func (c *SlirpProcess) Connect() (*SlirpConnection, error)

func (c *SlirpProcess) Start() error

type Spec ¶

type Spec struct {
	Type Type
	Arg  string
}

func SpecFlag(name, defaultValue, usage string) *Spec

func (s *Spec) EthernetStream(captureNonIPX bool) (DuplexEthernetStream, error)

type Type ¶

type Type func(arg string, captureNonIPX bool) (DuplexEthernetStream, error)

Type is a function that will open a DuplexEthernetStream connection to a physical network.