Network traffic monitor with pcapy in python

Question

I have written simple network traffic monitor to get transfer rate in B/s and/or total data transfer (in B). However when I test it by transferring a file with ftp (using To

Answer 1

Use a filter to capture only the useful tcp streams, ftp-data :

port ftp-data

I suggest also to capture in promiscous mode, only the packet headers ( you don't need the full data to know the length ):

open_live( device, 4096, True, 100 )

In your handler, it is correct to use header.getlen().