pcap-file-ra

This crate provides random access to packets in a pcap file. You can get() n'th packet of pcap in a constant time.

The crate is consider to be a companion crate of the pcap-file.

Usage

Add to Cargo.toml:

[dependency]
pcap-file = "0.10.0"
pcap-file-ra = "0.1.1" 

Tested with pcap-file 0.10.0 on windows 64-bit platform.

Features

• PcapReader wrapper that extracts offsets from pcap file
• Save offset file to speed-up future access.

Features not planned

• implement Index trait for PcapReader
  • Index trait can't be implemented because it assumes the returned value is already on some memory location.

Comparison matrix of existing crates

We depend on pcap-file. The crate was chosen based on the following criteria.

• pcap 0.7.0 - wrapper of pcap/WinPcap

  • support other than little endian: yes
  • support nanosecond pcap: unknown

• pcap-file 0.7.0 - manually written pcap parser

  • support other than little endian: yes
  • support nanosecond pcap: yes
  • support write: yes
  • can access to underlying reader: yes

• pcap-rs 1.0.1 - nom-based pcap parser

  • support other than little endian: yes
  • support nanosecond pcap: yes
  • support write: no

• rpcap 0.3.0 - bytepack-based pcap parser

  • support other than little endian: yes
  • support nanosecond pcap: yes
  • support write: yes
  • can access to underlying reader: no

• pcapng 1.0.0 - nom-based pcapng-only parser

  • support other than little endian: no
    • https://github.com/richo/pcapng-rs/issues/1
  • support nanosecond pcap: no
  • support pcap file: no