Go Sniffer

This code aims to sniff the network (or a PCAP file) and generates stats in some CSV files. The idea is to use a Go routine for each parser and then get a very simple code.

Install

export GOPATH=$PWD
export GOMAXPROCS=8
go build -o sniffer main.go

Sniff the network:

sudo sniffer -i eth0

Or read a pcap file:

sniffer -r file.pcap

Profiling

• install graphviz

• run the sniffer with the -profile option

  ./sniffer -r file.pcap -profile

• a file profiling.pprof was build

• generate a pdf with:

  go tool pprof --pdf sniffer profiling.pprof > profile.pdf