pcap

package

v0.0.0-...-64f6de6 Latest Latest Go to latest Published: Sep 16, 2023 License: Apache-2.0 Imports: 7 Imported by: 0

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Repository

github.com/danderson/netboot

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Open Source Insights

Documentation ¶

Overview ¶

Package pcap implements reading and writing the "classic" libpcap format.

Index ¶

type LinkType
type Packet
type Reader
- func NewReader(r io.Reader) (*Reader, error)
type Writer
- func (w *Writer) Put(pkt *Packet) error

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type LinkType ¶

type LinkType uint32

LinkType describes the contents of each packet in a pcap.

const (
	LinkEthernet LinkType = 1
	LinkRaw      LinkType = 101
)

Some of the more commonly used LinkTypes.

type Packet ¶

type Packet struct {
	Timestamp time.Time
	Length    int
	Bytes     []byte
}

Packet is one raw packet and its metadata.

type Reader ¶

type Reader struct {
	LinkType LinkType
	// contains filtered or unexported fields
}

Reader extracts packets from a pcap file.

func NewReader ¶

func NewReader(r io.Reader) (*Reader, error)

NewReader returns a new Reader that decodes pcap data from r.

func (*Reader) Err ¶

func (r *Reader) Err() error

Err returns the first non-EOF error encountered by the Reader.

func (*Reader) Next ¶

func (r *Reader) Next() bool

Next advances the Reader to the next packet in the input, which will then be available through the Packet method. It returns false when the Reader stops, either by reaching the end of the input or an error. After Next returns false, the Err method will return any error that occured while reading, except that if it was io.EOF, Err will return nil.

func (*Reader) Packet ¶

func (r *Reader) Packet() *Packet

Packet returns the packet read by the last call to Next.

type Writer ¶

type Writer struct {
	Writer    io.Writer
	LinkType  LinkType
	SnapLen   uint32
	ByteOrder binary.ByteOrder // defaults to binary.LittleEndian
	// contains filtered or unexported fields
}

Writer serializes Packets to an io.Writer.

func (*Writer) Put ¶

func (w *Writer) Put(pkt *Packet) error

Put serializes pkt to w.Writer.

Source Files ¶

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