How to catch traffic?

Question

linux

Hello. There is a need to control the traffic of downloading files by the user. For example, the user starts downloading a file from the site, and the software on vds counts the number of "meters" that the user with a certain ip downloaded. And all this needs to be integrated with php to get statistics. What software to use? Can eat examples of implementation? I apologize for the crappy presentation of ideas.

Answer 1

Look here about nginx - www.lexa.ru/nginx-ru/msg13743.html
You only need to replace virtual hosts with custom IPs.
And to parse the log is a matter of technology.

Answer 2

Thanks to all!

Answer 3

It's easier just using PHP to find out the weight of the file that the user downloads and add this data to the database.