mpcap

package
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Published: Aug 12, 2025 License: MIT Imports: 4 Imported by: 0

README

Implementation of PCAP Capture File Format

See https://www.ietf.org/archive/id/draft-gharris-opsawg-pcap-01.html

Documentation

Overview

Package mpcap implements PCAP Capture File Format

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Writer

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

func NewWriter

func NewWriter(w io.Writer) *Writer

NewWriter creates a new PCAP Writer that writes to the given io.Writer.

func (*Writer) WriteHeader

func (pw *Writer) WriteHeader(snaplen int) error

WriteHeader writes a global header block to the pcap file.

The global header block contains metadata about the capture, such as the timestamp format and the maximum packet length.

See https://wiki.wireshark.org/Development/LibpcapFileFormat for more information about the pcap file format.

func (*Writer) WritePacket

func (pw *Writer) WritePacket(timestamp time.Time, data []byte) error

WritePacket writes a packet to the pcap file.

The packet is written as a packet header plus the packet data. The timestamp is written as the number of seconds since the epoch, and the packet data is written as a sequence of bytes of the length specified in the packet header.

See https://wiki.wireshark.org/Development/LibpcapFileFormat for more information about the pcap file format.

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